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Review

Ethnomedicinal Value of Antidiabetic Plants in Bangladesh: A Comprehensive Review

by
Md. Masudur Rahman
1,*,
Md. Josim Uddin
1,2,
A. S. M. Ali Reza
1,
Abu Montakim Tareq
1,
Talha Bin Emran
3,* and
Jesus Simal-Gandara
4,*
1
Department of Pharmacy, International Islamic University Chittagong, Chittagong 4318, Bangladesh
2
Pharmazeutisches Institut, Abteilung Pharmazeutische Biologie, Christian-Albrechts-Universität zu Kiel, Gutenbergstraße 76, 24118 Kiel, Germany
3
Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
4
Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Food Science and Technology, University of Vigo—Ourense Campus, E32004 Ourense, Spain
*
Authors to whom correspondence should be addressed.
Plants 2021, 10(4), 729; https://doi.org/10.3390/plants10040729
Submission received: 15 February 2021 / Revised: 20 March 2021 / Accepted: 5 April 2021 / Published: 8 April 2021
(This article belongs to the Collection Medicinal Plants: New Advances in Phytochemicals and Their Health Benefits)
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Abstract

:
The use of conventional drugs to treat metabolic disorders and the pathological consequences of diabetes further increases the complications because of the side effects, and is sometimes burdensome due to relatively higher costs and occasionally painful route of administration of these drugs. Therefore, shifting to herbal medicine may be more effective, economical, have fewer side effects and might have minimal toxicity. The present review amasses a list of ethnomedicinal plants of 143 species belonging to 61 families, from distinctive domestic survey literature, reported to have been used to treat diabetes by the ethnic and local people of Bangladesh. Leaves of the medicinal plants were found leading in terms of their use, followed by fruits, whole plants, roots, seeds, bark, stems, flowers, and rhizomes. This review provides starting information leading to the search for and use of indigenous botanical resources to discover bioactive compounds for novel hypoglycemic drug development.

1. Introduction

Diabetes mellitus (DM) is the most prevalent, and overwhelming chronic non-communicable disease. It is a major worldwide health problem, particularly in third-world countries. Nowadays, it is considered a worldwide epidemic. DM may cause several complications, including chronic damage, dysfunction and organ failure (kidneys, heart, and blood vessels) [1]. Long-term complications of DM are cardiovascular disease [2], microangiopathy, retinopathy, nephropathy [3], and cognitive deficit [4]. According to the International Diabetes Federation (IDF) report, there are about 425 million people with diabetes in 2017, which will rise to an estimated 629 million in 2045 worldwide [5]. The estimated prevalence of DM in Bangladesh is about 11.1 million in 2000 [6]. In DM, the biguanides, sulfonylureas, alpha-glucosidase inhibitors (acarbose, miglitol, voglibose), thiazolidinediones and, meglitinides are used to lower blood glucose level as insulin and hypoglycemic agents. However, the use of antidiabetic agents is limited because of their unfavorable impacts including hypoglycemic coma and liver and kidney complications [7,8]. Hence, it is practical in the current situation to search for new and stronger phytotherapy substances with efficacy. Recently, herbal medicines have become a topic of interest, and many herbal medicines have been recommended for the treatment of diabetes. Additionally, several compounds isolated from different plant species with their mechanistic studies. The trigonelline is a major hypoglycemic alkaloid isolated from Trigonella foenum-graecum L., whereas steroid charantin from Momordica charantia L., galegine from Galega officinalis L., castanospermine from Castanospermum australe A. Cunn. and C. Fraser, panaxans A-E from Panax ginseng C. A. Mey., and reserpine from Rauvolfia serpentina (L.) Benth. ex Kurz have been isolated [9]. Hypoglycemic activity has been reported by catharanthine (alkaloid), leurosine (alkaloid), lochnerine (alkaloid), tetrahydroalstonine (yohimban alkaloid), vindoline (alkaloid ester) and vindolinine (indole alkaloid), which was isolated from Catharanthus roseus [10]. According to a few studies, several medicinal plants are useful in diabetes in distinct Bangladeshi local areas, divisions, and district [11,12,13,14]. Here, this review compiled a list of antidiabetic medicinal plants from the survey reports of the whole country.

2. Methods

We reviewed scientific articles published in journals by electronic databases (Google Scholar, PubMed, Medline, Web of Science, DOAJ, and Scopus) using specific keywords such as “medicinal plants”, “traditional plants”, “antidiabetic plants”, “antihyperglycemic plants”, “survey of antidiabetic plants”, “survey of medicinal plants”, “ethnobotanical survey”, “ethnomedicinal survey”, plus “Bangladesh”. We reviewed 96 survey articles that gave data about the utilization of therapeutic plant species that are used to treat diabetes by local communities. We utilized distributions introducing direct ethnobotanical data to prepare a list of medicinal plants to treat diabetes in Bangladesh.

3. Dependency in Medicinal Plants

Bangladesh is considered an excellent source for medicinal plants due to its favorable farming condition and seasonal variety. Also, Bangladesh comprises tropical forest and boggy jungle areas with bio-diverse flora. About 75% of the country’s population lives in rural territories, and almost 80% is reliant on medicinal plants for their primary healthcare whereas herbal medication is a well-known and acknowledged form of treatment [15,16]. Moreover, Bangladesh has various indigenous communities or clans, such as Chakma, Marma, Garo, Santal, Manipuri, Tripura, who still depend on their traditional or tribal medical practitioner for treatment of assorted illnesses, including, diarrhoea, infection, diabetes, cold, cough, fever, malaria, etc. These tribal practitioners have been using medicinal plants for centuries to cure completely or at least to relieve major symptoms of diseases [17].

4. Ethnomedicinal Use of Plants in Diabetes

Treatment of hyperglycemic according to the traditional system of medicine is often easier, cheaper and cost effective due to indigenous availability of certain herbs with hypoglycemic effects [18]. A handful of ethnomedicinal surveys on medicinal plants have been accomplished from different divisions, districts, villages, and even hill tract and tribe areas of the country. A limited number of plant species have been reported to be antidiabetic. For each species, botanical name(s), family, local name(s), part(s) used, and reference(s) are presented in Table 1. Few herbal agents that possess antidiabetic properties have been cited notably in the survey, including Azadirachta indica A. Juss., Centella asiatica L. Urb., Ficus racemose L., Ficus hispida L.f., Mangifera indica L., Momordica charantia L., Syzygium cumini L. Skeels, Terminalia chebula Retz., Coccinia grandis L. Voigt., Coccinia cordifolia L. Cogn., Aegle marmelos L. Corrêa, Tinospora cordifolia Hook. F. and Thoms., Trigonella foenum-graecum L., Tamarindus indica L., Moringa oleifera Lam., Kalanchoe pinnata (Lamk.) Pers., Bombax ceiba L., Cajanus cajan L. Millsp., Psidium guajava L., Clerodendrum viscosum Vent., and Scoparia dulcis L. Different parts of the plants are used for antidiabetic potential such as the leaf, fruit, flower, root, bark, rhizome, bulb, latex, seed, and whole plant. Here, the leaf is the most commonly used plant part (32%) abided by the fruit (14%), whole plant (12%), root (11%), seed (11%), bark (9%), stem (6%), flower (3%), rhizome (1%), and others (bulb, gum and latex, 1%), as shown in Figure 1.

5. Modes of Preparation

The major modes of preparations are powder (Syzygium cumini L., Azadirachta indica A., Momordica charantia L., Mikania scandens L., Sida cordifolia L., Asparagus racemosus L., Ficus racemosa L.) [16,42,43,50,56,67], juice (Cycas pectinata B., Cajanus cajan L., Ocimum tenuiflorum L., Moringa oleifera Lam., Solanum torvum Swartz, Coccinia grandis L., Stevia rebaudiana Bertoni, Kalanchoe pinnata Pers., Momordica charantia L., Syzygium cumini L. [16,17,42,43,50,56,67,77], and paste (Tinospora cordifolia H., Psidium guajava L., Nymphaea nouchali B.) [42]. Some parts or whole plants are cooked as vegetables and eaten with meals (Ficus hispida L., Momordica charantia L., Coccinia cordifolia L.) [16,31,50,56,67,73] and others are also taken raw directly (Corchorus aestuans L., Tamarindus indica L., Hibiscus schizopetalus M.) [56,67,78,79]. Generally, whole plant or plant parts are used in the extraction of juice by soaking, crushing or boiling in water and, after that, oral administration of the juice directly or either with meals. Occasionally, plant juice or plant parts are mixed with a small amount of sugar, salt or honey before oral administration, typically to make the juice more edible and pleasant [20,120]. In a combinational medicinal plants therapy used by traditional healers (Kavirajes) for the treatment of diabetes, for example, Azadirachta indica A. leaves are added to the leaves of Lawsonia inermis L., Costus speciosus SM. (crêpe ginger) leaves are masticated with leaves of Piper betle L., and Asteracantha longifolia L. seeds are used in combination with Andrographis paniculata W. leaves, Curculigo orchioides G. leaves, Ipomoea mauritiana Jacq. leaves and fruits of Ficus hispida L. [49].

6. Antidiabetic Plant Species

The current review comprised a total of 143 plant species belong to 61 families traditionally used for the treatment of diabetes. The therapeutic plant species in the families show in Table 2. Asteraceae, and Fabaceae are characterized by nine species of each followed by Cucurbitaceae seven species; Acanthaceae and Apocynaceae six species, respectively; Lamiaceae, Poaceae and Rutaceae five species, respectively; and Combretaceae, Malvaceae and Solanaceae are represented by 4 species respectively. Triple species are found in 10 families of each and also double species are recorded in another 10 families of each. A single species in each is noted by 30 families. The review demonstrated that the common families of medicinal plant used for the treatment of diabetes in Bangladesh are Asteraceae, Fabaceae, Cucurbitaceae, Acanthaceae, Apocynaceae, Lamiaceae, Poaceae and Rutaceae. The most commonly used traditional remedies for DM are Momordica charantia L. (Cucurbitaceae), Ficus racemosa L. (Moraceae), Syzygium cumini L. (Myrtaceae), Azadirachta indica A. Juss. (Meliaceae), Cajanus cajan L. (Fabaceae), and Coccinia grandis L. J. Voigt (Cucurbitaceae).

7. Phytochemical and Experimental Studies of Antidiabetic Plants in Bangladesh

A common way to deal with species determination for phytochemical and pharmacological analysis is by reviewing the ethnobotanical literature [221]. Several phytochemical and in vivo studies have been executed in Bangladesh on the antidiabetic properties of traditional practitioners’ medicinal plants, divulging antidiabetic plants’ active principles. Examples of such studies are: Akter, Mahabub-Uz-Zaman, and Rahman, 2013; Al-Amin, Uddin, Rizwan, and Islam, 2013; Ali et al., 1993; Amran, Sultan, Rahman, and Rashid, 2013; Bhuyan, Rokeya, Masum, Hossain, and Mahmud, 2010; Borhanuddin, Shamsuzzoha, and Hussain, 1994b; A. Chowdhury and Biswas, 2012; A. R. Das, Mostofa, Hoque, Das, and Sarkar, 2010; Habib and Gafur, 2003; J. M. A. Hannan et al., 2003; E. Haque, Saha, Islam, and Islam, 2012; M. A. Hossain et al., 2012; Md Alamgir Hossain, Roy, Ahmed, Chowdhury, and Rashid, 2007b; M. Z. Hossain, Shibib, and Rahman, 1992; Islam et al., 2009; M. A. Islam et al., 2011; I. A. Jahan et al., 2009; Mostofa et al., 2007b; Mowl, Alauddin, Rahman, and Ahmed, 2009; Rafiq, Sherajee, Nishiyama, Sufiun, and Mostofa, 2009; Md Masudur Rahman, Hossain, Siddique, Biplab, and Uddin, 2012b; Md Mahfuzur Rahman, Sayeed, Haque, Hassan, and Islam, 2012; M. W. Rahman et al., 2005; Rokeya, Bhowmik, Khan, and Khter, 2009; M. G. Roy et al., 2010; Shahreen et al., 2012; Shibib, Khan, and Rahman, 1993; Sikder, Kaisar, Rahman, Hussain, and Rashid, 2011; Talukder, Khan, Uddin, Jahan, and Alam, 2012; Urmi et al., 2012; Zulfiker et al., 2011 [222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252]. These scientific studies emphasized the correlation among traditional use and the pharmacological properties of antidiabetic plants.
Various parts of the A. augusta plant are used in the treatment of diabetes, such as roots and leaves and bark. The methanol leaves extract of 300 mg/kg dose in alloxan-induced rat showed antidiabetic effects. In contrast, the 200 mg/kg in combination (1:1) with water extract (root and leaves) of A. augusta and Azadirachta indica, respectively, after 8 weeks exhibited significant lowering of blood sugar. In a human study, a significant blood sugar-lowering effect was observed with an alcoholic extract [253]. A significant change in body weight and decrease in blood glucose was reported by Mostofa et al., 2007 for Catharanth roseus leaves (1 g/kg), Azadirachta indica leaves (500 mg/kg), and Allium sativum seed (1 g/kg) aqueous extracts (14 days of treatment) [254].
According to Venkataiah et al. 2013, ethanolic roots extract of A. ilicifolius reported that the 200 and 400 mg/kg significantly reduced blood glucose levels in diabetic albino Wistar rat models [255], while 50, 100, 200, and 400 mg/kg doses of methanol leaves extract reported significant and dose-dependent reduction in blood glucose level of Swiss albino mice [256]. A similar result was observed by an in vitro DNSA method for aqueous, ethanol and methanol extract, whereas methanol leaves extract demonstrated highest concentration-dependent manner inhibition of α-amylase and α-glucosidase [257].
Akhtar et al., 1991 studied the aqueous and methanol extracts of the Achyranthes aspera whole plant demonstrated hypoglycemic activity at 2, 3, and 4 g/kg dose for alloxan-induced diabetic rabbits [258], while the ethanol leaves extract in Streptozotocin-induced rats showed a significant reduction in blood glucose level [259]. A similar result was observed in ethanol seed extract at 300 and 600 mg/kg [260].
In maceration with 80% ethanol, however, the Adiantum capillus-veneris extract did not demonstrate hypoglycemic activity at a dose of 25 mg/kg for mice, while the whole plant extract prepared by boiling the dried material in water was given orally to mice in same dose, glucose-induced hyperglycemia was reduced [261,262]. The alcoholic and aqueous extract exhibited a significant reduction in blood glucose level in rabbits and a DNS assay, respectively [263,264].
A. marmelos fruit water extract was tested in streptozotocin-induced Wistar rats at a dosage of 125 and 250 mg/kg, whereas 250 mg/kg is more efficient in lowering blood glucose [265]. Kesari et al., 2006 reported a similar result for water seed extract, whereas 100, 250 and 500 mg/kg was administered to diabetic rats [266]. An in vitro hypoglycemic activity was examined using a leaves extract of ethanol and petroleum ether in alpha-amylase inhibitory and glucose assay in yeast cells. The ethanol extract exhibited 60.2% inhibition in alpha-amylase (250 μg/mL), which was higher than petroleum ether extract [267].
A. macrorhizome rhizome methanol extract was used in alloxan-induced hyperglycemic mice at a single dose (250 and 500 mg/kg), whereas a substantial decrease (p < 0.05) in the glucose level was observed at 500 mg/kg [268].
Acetone extracts from A. campanulatus have been found to be possible antidiabetic agents for streptozotocin-induced Wister male diabetic rats at a dosage of 0.1% to 0.25% [269]. The corm methanol extract decreases glucose level in blood at 37.4%, with albino mice weighing 400 mg/kg, while 50, 100, and 200 mg/kg dosage also used [269,270].
Several studies reported antidiabetic effects of A. paniculata [271,272,273,274,275]. As of the second hour of observation, Akhtar et al. recorded 50, and 100 mg/kg water extract from A. paniculata leaves exhibited significantly lower glucose levels [276]. Alternatively, hot water (0.8 g/kg) and ethanol (2 g/kg) extract administration of A. paniculata lowered blood sugar levels in alloxan-induced diabetes rats by 46.21% and 45.13%, respectively [277].
The ethanol extract of A. sativum displayed antidiabetic effects on streptozotocin and alloxan-induced diabetic mice and rabbits by inducing insulin secretion from pancreatic parietal cells [278]. Several other studies of A. sativum in streptozotocin and alloxan-induced diabetes recorded which was beneficial in decreasing of the blood glucose of rats and mice [279,280]. Clinical research reported the antidiabetic effect of administering A. sativum pills at 900 mg/day in type-II diabetes patients [281].
In 2020, Muñiz-Ramirez et al., reported the methanol leaves extract of A. vera (5 mg/mL) showed 87% inhibitory activity in α-amylase enzyme, while 66% was observed in α-glucosidase enzyme [282]. A. vera gel (200 and 300 mg/kg) alcoholic extracts on streptozotocin-induced diabetic rats have demonstrated that they can reduce blood glucose levels without harming the subject [283]. In contrast, the administration of leaf pulp (500 mg/kg) and gel (10 mL/kg) extracts by oral administration has not been successful in another rat trial [284].
An ethanolic extract of the leaves of A. scholaris administration of 100, 200 and 400 mg/kg dosage by oral administration has effectively reduced blood glucose level in streptozotocin-induced diabetic rats [285]. The isolated compound from dichloromethane leaves extract, namely cycloeucalenol (a), cycloartanol (b) and lupeol (c); exposed a hypoglycemic activity at a dose of 25 mg/kg (combination of a–c) in mice [286]. In a patient based study, the leaves extract at a dose of 1, 2 and 3 g lowered the blood glucose level in a consistent manner [287].
The Amaranthus spinosus stems 250 and 500 mg/kg dosage [288] and leaves 200, 250, 400 and 500 mg/kg dosage [289,290] exposed antidiabetic effects in streptozotocin (STZ)-induced diabetic rats trial.
Aqueous extract and hydro-alcoholic extract from A. mexicana aerial parts (200 and 400 mg/kg) were reported to have hypoglycemic efficacy in alloxan and Streptozotocin-induced diabetic rats [291,292].
In 2011, Vadivelan et al. observed the blood glucose levels and fluid intake of diabetic-induced rats have substantially decreased during the oral administration of the ethanol extract of A. racemosus, 200 and 400 mg/kg for 21 days [293]. A. racemosus root was subject to α-amylase and α- glucosidase inhibitory activity in n-hexane, chloroform, ethyl acetate, and methanol, whereas less inhibitory activity of ethyl acetate and aqueous extracts was noticeable [294].
A significant reduction in plasma glucose, glycosylated hemoglobin, alanine transaminase, aspartate transaminase and total cholesterol was seen for the dose of 100, 200, and 400 mg/kg of aqueous extract of Asteracantha longifolia to alloxan-treated rats [295].
Shravan et al. (2011) evaluated the hypoglycemic effect of Azadirachta indica, whereas diabetic rat after 250 mg/kg (single and multiple dose study) treatment for 24 h and 15 days reduced creatinine, urea, lipids, triglycerides and glucose [296]. The root bark and leaves’ extracts was also effective in treating diabetes [297].
The leaf and flower portion of B. ceiba was extracted using various solvents, including water, 50% ethanol, and 95% ethanol, which was subjected to α-glucosidase and α-amylase inhibitory assays for antidiabetic efficacy, while the maximum effect was observed for ethanol flower extract [298]. B. ceiba leaf hydroalcoholic extract (200 and 400 mg/kg) showed substantial reductions in glucose levels [299].
In four separate doses of B. pinnatum (200, 400, 800 mg/kg and 800 mg/kg + glibenclamide 2 mg/kg), the presence of antidiabetic activity in diabetic-induced rats was shown in Aransiola et al., 2014. Their blood sugar was lower in 200 mg/kg than the other dose of aqueous extract. An 800 mg/kg aqueous extract mixture with glibenclamide (2 mg/kg), however, showed a higher efficiency than 200 mg/kg and others [300]. An anti-hyperglycemic effect on 200 and 400 mg/kg of alloxan-induced Wistar albino rats was identified [301].
B. persicum seed ethanol and aqueous extract decreased significantly in glucose and insulin levels at varying concentrations in diabetic rats. B. persicum water extract has shown protective effects on renal damage caused by diabetes in rats [302,303].
An additional study found in alloxan-induced diabetic mice that the methanol extract of C. cajan and Tamarindus indica root decreases significantly in blood glycolysis level (p < 0.001) in a five-day observation [192]. The antidiabetic activity of methanol extract of C. cajan leaves exposed a significant and dose-dependent (400 and 600 mg/kg) decrease in blood sugar of alloxan-induced diabetic rats, with the maximum effect at 4–6 h [304]. The three-dose extract of C. indica (100, 200, and 400 mg/kg) exhibited a significant decrease in blood glucose level [305].
C. carandas exhibited significant antidiabetic effects in aqueous extract (300 mg/kg), methanol fruit extract (400 mg/kg), and methanol leaves extract (50, 100 and 200 mg/kg) [306,307,308].
C. crista ethanol/aqueous seed extracts were subjected for antidiabetic effect in streptozotocin-induced pup models, while both ethanolic and aqueous seed extracts showed antidiabetic activity; however, aqueous C. crista extract had a more significant effect compared to ethanolic extract [309].
In 2008, Veeramani et al., reported antihyperglycemic effects in streptozotocin (STZ) diabetic rats by ethanolic extract of C. halicacabum at 50, 100, and 200 mg/kg dosage [310]. In addition, the alcoholic extract at 15, 30, and 60 mg/kg dosage significantly decrease blood glucose level in mice model [311].
A 24-week observation study on aqueous extract of C. papaya leaves in streptozotocin-induced diabetic rats reported reduction in fasting blood sugar, and lipid profile [312], while ethanol leaves’ extract also reported reduction in blood glucose level without any alteration of body weight [313]. In another report on ethanol leaves’ extract at a dose of 200, 400, and 600 mg/kg showed significant reduction in blood glucose level in alloxan-induced diabetic rats [314].
The Clitoria ternatea extract and its different fractions at 100 and 200 mg/kg dosage exposed antidiabetic effect in STZ-induced diabetic rats, while 200 mg/kg dose of ethanol and butanol exhibited significant antidiabetic and antihyperlipidemic activity [66].
Cassia fistula stem’s ethanolic extract significantly (p < 0.05) decreased blood sugar levels in alloxan-induced diabetic and glucose-induced hyperglycemic rats at 250 and 500 mg/kg, respectively. Results of glucose tolerance showed substantial improvement respectively in the dose of 250 and 500 mg/kg body weight of ethanolic extract [315].
The methanol leaves extract of Clerodendrum viscosum reported significant blood glucose reduction (1st to 3rd h observation) at 250 and 500 mg/kg dose in a mice model [316]. In another similar study at different doses (200 and 400 mg/kg), the extract demonstrated 25.2% and 33.3% blood glucose level reduction, respectively [317].
The ethanol Coccinia grandis leaves reported a non-significant hypoglycemic effect comparable to the standard drug metformin at 750 mg/kg dose [318]. Another report by Islam et al. 2014 exhibited a substantial reduction in fasting blood glucose levels from C. grandis and Centella asiatica at a dose of 3 mL/kg in both normal and therapeutic models of alloxan-induced diabetic rats [319]. In 2012, Rhaman et al., reported that the ethanolic leaves of Centella asiatica extract (250, 500, and 1000 mg/kg) demonstrated 32.6%, 38.8%, and 29.9% blood glucose reduction at the 3rd hourly observation, respectively, whereas no toxicity sign was observed even at 3000 mg/kg dose [226].
Cocos nucifera mesocarp showed (50, 100, and 200 mg/kg) significant blood glucose lowering effect with increased creatinine and glucose tolerance level for streptozotocin-induced rat [320].
The methanol and chloroform extracts of Cuscuta reflexa whole plants reported a significant hypoglycemic effect at the dose of 50, 100, and 200 mg/kg in glucose-induced Long-Evan rats [105]. Another report by Rath et al. 2016 exhibited that the C. reflexa aerial parts in methanol and aqueous extracts at the dose of 200 and 400 mg/kg showed antidiabetic effects, while the 400 mg/kg significantly reduced the blood glucose level after 3rd hour observations [106].
The chloroform extract derived from Eclipta alba demonstrated substantial antidiabetic efficacy in 100 type-II diabetic patients. Oral administration of E. alba leaf suspension (2 and 4 g/kg body weight) for 60 days leads to a significant decrease in blood glucose levels [113].
The aqueous extract derived from the seeds of Emblica officinalis was studied due to its antidiabetic effect in animal models. Streptozotocin-induced type-II diabetes models were considered in this regard. The results of the study reported that the doses ranging from 100–400 mg/kg body weight of this extract significantly reduced the level of blood glucose in normal rats where the reduction level was at its peak at 300 mg/kg [114].
E. fluctuans with partial antidyslipidemic properties in euglycemic rats and diabetic ones, appear to have a strong antihyperglycemic impact in diabetes and Cd toxicity. Twenty-one days of E. fluctuans extract therapy at a dosage of 200 mg/kg greatly decreased blood glucose levels in normal rats treated with both plant extract and CdCl2 (N-PCd) and diabetic treated with both plant extract and CdCl2 (DM-PCd) (p < 0.05) community [116].
The assessment of antidiabetic activity of Eupatorium odoratum leaves was conducted on male mice using alloxan with blood glucose levels >200 mg/dL. A research study has shown that the extract with dose concentrations ranging from 5–20% will reduce the blood glucose level of mice with hyperglycemia 20% more effectively [117].
Ficus bengalensis Linn, generally referred to as the banyan tree, is a member of the Moraceae family. Its bark is used for diabetes therapy. In this analysis, ethanol extracts from the different aerial sections of Ficus bengalensis Linn have been tested comparatively for their reduced blood-glucose activity. Histopathology in treatment classes for the beta-totropic function of different sections of Ficus bengalensis has been conducted. The ethanolic extracts of the fruit were shown to have a stronger antidiabetic influence at a dose of 120 mg/kg than the ethanol extract of the bark or root [119].
Ficus hispida bark ethanol extract (1.25 g/kg) shows a substantial reduction in blood glucose levels in both mild (p < 0.01) and diabetic (p < 0.001) rats. However, the blood glucose level drop was smaller than that of glibenclamide, the standard treatment [121].
The antidiabetic action of aqueous (AE) and ethanol (EE) extracts of Ficus racemosa was evaluated in a diabetes model induced by Streptozotocin via investigating the level of blood glucose. Treatment with AE (500 mg/kg) and EE (400 mg/kg) of Ficus racemosa revealed a substantial decrease (p < 0.05) in blood glucose levels relative to diabetic control rats [124].
Glycosmis pentaphylla (Retz.) Correa, a medicinal plant is widely used in Bangladesh as a herbal remedy. A study was developed for the assessment of the antihyperglycemic properties of ethanol extract of Glycosmis pentaphylla (GP). About 60 Swiss Albino male mice were used for this purpose (weight 20–25 g). The findings show that GP extract has a short and a week-long antihyperglycemic impact comparable to metformin HCl, a recognized and commonly used antihyperglycemic agent [125].
The effectiveness of extract from Gymnema sylvestre leaves was investigated in 22 type-II diabetic patients on conventional oral anti-hyperglycemic agents. GS4 (400 mg/day) was administered for 18–20 months as a supplement to conventional oral drugs. The supplementation of extract at a dose of 400 mg/day demonstrated a substantial reduction in blood glucose level, glycosylated plasma proteins, and glycosylated hemoglobin. These data propose that the beta cells can be repaired in type-II diabetic patients on Gymnema sylvestre extract supplementation [126].
A study was conducted in Streptozotocin-mediated diabetic rats to screen phytochemical constituents as well as the antihyperglycemic function of Heliotropium indicum (HI). Diabetic rats were treated with various solvent extracts of HI at a dosage of 500 mg/kg, produced substantial (p < 0.0001) antidiabetic activity with methanol and aqueous extracts [127].
Gayathri M. et al. 2008 evaluated the antidiabetic activity of Hemidesmus indicus on diabetic rats caused by streptozotocin. The results of the study concluded that aqueous extracts from the root of H. indicus induced significant antidiabetic activity at a dose of 500 mg/kg/day. It improves the amounts of electrolytes, hepatic microsomal protein, glucose metabolizing enzymes, and P-450 mono-oxygenase-dependent hepatic cytochrome systems at almost regular levels as well as the corresponding metabolic changes in testable induced diabetic rats [128].
Venkatesh, S. et al. conducted an experiment to find out the antidiabetic activity of Hibiscus rosa-sinensis flowers. Hibiscus rosa-sinensis ethanolic extracts at doses of 250 mg/kg and 500 mg/kg greatly decreased blood glucose levels caused by alloxan. Only a dosage of 500 mg/kg demonstrated substantial blood sugar reductions after 1 h, while the extract showed a significant drop (Pb0.05) in the level of blood glucose levels after 3 h at a dose of 250 mg/kg. A substantial decrease in blood glucose, compared to the blood glucose group treated with glibenclamide (10 mg/kg), was seen in the subacute study at a dosage of 500 mg/kg by the end of the investigation [129].
In a study, the leaves and flower extracts of Hibiscus schizopetalus were investigated for antihyperglycemic behaviors in alloxan-mediated diabetic rats. The hypoglycemic activity was assessed in fasting normal rats and glucose-loaded rats (100 mg/kg body weight). Body weight observations were also reported. The extracts revealed a substantial (p < 0.001) decrease in typical fasting rats’ blood glucose levels [130].
A study was undertaken to consider the antidiabetic efficacy of stem of Hiptage benghalensis where it has been shown that the extract exhibited substantial glucose absorption inhibition at a dosage of 500 mg/kg and had hypoglycemic results in Long-Evans rats of 80–200 gm [131].
The consequences of the roots and leaves of J. adhatoda have been studied in animals with diabetes induced by alloxan. This experiment assessed the effects of plant leaves and root extracts on blood glucose level as well as other diabetes parameters. Oral dosing of 50 and 100 mg/kg of ethanol extracts of Justicia leaves to standard and experimental diabetic rats resulted in a substantial (p < 0.05) decrease in blood glucose from 2 to 6 days of therapy relative to J. adhatoda (100 mg/kg) and glibenclamide (5 mg/kg) root extracts [132].
The antidiabetic effect in glucose-induced mice for methanol bark extract of Lannea coromandelica at a dose of 100, 200, and 400 mg/kg exhibited dose-dependent and significant reduction of serum-glucose levels [139].
The Murraya koenigii aqueous extract (200, 300, and 400 mg/kg) showed the lowering of blood glucose levels in normal as well as in diabetic rabbits after single oral administration [154]. The ethanol extract of Mucuna pruriens seed demonstrated a significant and dose-dependent (5, 10, 20, 30, 40, 50, and 100 mg/kg) reduction of plasma glucose level in alloxan-induced diabetic rats [155]. The stem extract of Musa sapientum with different doses (25, 50, and 100 mg/kg) reduced blood-glucose level in streptozotocin-induced rats, while 50 mg/kg dose was most effective [156,157]. The hot water and cold ethanol extracts of Piper betle leaves showed significant and dose-dependent efficacy in reducing the blood glucose level in normoglycaemic and strepozotocin-induced diabetic rats, while none of the extracts shows any toxicity sign [165].
V. anthelmintica exhibited significant antidiabetic effects in aqueous seeds extract (100, 200, and 500 mg/kg), and ethanol seeds extract (250, 500, and 750 mg/kg), whereas the higher showed maximum reduction in blood glucose level [203,204].
V. rosea exhibited significant antidiabetic effects in methanol whole plant extract at doses of 300 and 500 mg/kg in diabetic rats [321], while the alcoholic extract of leaves also reported reduction of blood glucose level [206].
The isolation of iridoid glucoside from V. negundo leaves were subjected for antidiabetic effect at a dose of 50 mg/kg, whereas it shows significant effectiveness in glycoprotein metabolism [208]. Idopyranose from methanol leaves’ extract at a dose of 50 mg/kg protects the pancreatic β-cells [209], while ethanolic extract (60%) was found to be a strong antidiabetic agent [210].
The methanol extract of W. chinensis leaf (100 and 200 mg/kg) in alloxan-induced Swiss albino diabetic mice reported antidiabetic effect, while the α-amylase inhibition assay and α-glucosidase activity exposed 48.39% and 39.37% inhibition at 500 μg/L and 10 μg/mL, respectively [211]. A significant in vitro α-amylase inhibition assay and α-glucosidase activity was observed for the isolated compound from the methanol leaves extract [212].
Ethanol W. somnifera roots and leaves extract at 100 and 200 mg/kg dose increase the blood glucose level while a decrease in total protein, glycogen and tissues protein [213]. Leaves and root extract showed antidiabetic activity, while the isolated compounds Withaferin A (10 μM) showed an increase glucose uptake (54%) [214].
Dosage-dependent and statistically significant antihyperglycemic activity has been shown in the Xanthium indicum methanol extracts in doses of 50, 100, 200, and 400 mg/kg. The higher dose (400 mg) was observed for the reduction in blood glucose level (31.2%) [217].
For antidiabetic and hypolipidemic potentials in alloxan-induced rats, Zea mays husk extract, and fractions (187–748 mg/kg) were used, whereas dichloromethane fraction observed the highest activity [218].
Antihyperglycemic and hypoglycemic behaviors were demonstrated at 200 and 400 mg/kg for aqueous extract, petroleum ether extract and the non-polysaccharide fraction of the aqueous extract of Z. mauritiana fruits [219]. Another study of aqueous leaves extract reported decreased hyperglycemic effects at 300 mg/kg dose [322]. The aqueous ethanol seed extract at different doses of 100, 400, and 800 mg/kg reported hypoglycemic effects [220].

8. Future Prospects for Antidiabetic Plant Research

According to the ethnobotanical study, almost 800 plants were reported to have antidiabetic effects [323]. Traditional plant medicines are used all over the world for diabetic presentations which may offer a natural key to uncover a critical anticipated medication for the future. For example, several plant-derived pharmaceuticals and phytotherapies presently are used by the native people of all over the world. Galega officinalis L. has been used since the earlier period in Europe aimed at treating symptoms associated with type-II diabetes mellitus (T2DM) [324]. It is currently accepted that its hypoglycemic and insulin-sensitizing potential is related with its guanide compound (galegine). A related compound, the biguanide metformin molecule, was later evolved and is still broadly utilized in antidiabetic treatment [325]. In addition, to treat diabetic hyperglycemia in either long or short duration, a number of natural compounds have been identified with their different mechanisms. S-methyl cysteine sulfoxide (Allium cepa L.) [326], lophenol (Aloe vera L.) [327], and gymnemic acids (Gymnema sylvestre R.) [328,329] contribute significant effect on insulin secreting beta cells. While S-allyl cysteine (Allium sativum L.) [330], insulin like protein or so called plant insulin (Momordica charantia L.) act as alternatives to insulin, tetrahydrocurcumin (Curcuma longa L.) displays its activity by modifying glucose utilization [331], and 4-hydroxyisoleucine, a novel amino acid potentiator of insulin secretion derived from Trigonella foenum-graecum L. [332]. Several commercially available natural products are claimed to have antidiabetic effects. It has previously been shown that Salvia officinalis with tea exhibited metformin-like effects [333]. Agaricus bisporus L. (eatable mushroom) is considered a useful nutritive aide for diabetes and showed an appreciable hypoglycemic outcome [334]. Moreover, amongst the spices, Trigonella foenum-graecum L. (fenugreek seeds), Cuminum cyminum L. (cumin seeds), Zingiber officinale Roscoe (ginger), Brassica nigra L. K. Koch (mustard), Murraya koenigii L. (curry leaves) and Coriandrum sativum L. (coriander) are reported to have hypoglycemic effects [335].

9. Conclusions

Bangladesh is abundant in medicinal plants that have been proved in their ethnomedicinal uses by local and ethnic people. Therefore, there is increasing evidence that old molecules are finding new therapeutic effects through better observation of traditional knowledge and clinical interpretation. Evidence-based and safe use of economical plant-derived drugs against the prevalence of diabetes may offer an enormous public health interest, particularly for developing countries like Bangladesh. Hence, we suggest an emphasis on advanced research to conduct excellent clinical studies focusing on those plants that have revealed potential antidiabetic effects.

Author Contributions

Conceptualization, Investigation, Writing—original draft, Project administration, M.M.R.; Formal analysis, Writing—original draft, Visualization, M.J.U.; Methodology, Resources, Supervision, A.S.M.A.R.; Methodology, Supervision, Writing—original draft, A.M.T.; Methodology, Investigation, Writing—original draft, Supervision, Visualization; T.B.E. Writing—original draft, Formal analysis, Supervision, Visualization, Funding acquisition, J.S.-G. All authors have read and agreed to the published version of the manuscript.

Funding

This research received no external funding.

Data Availability Statement

All data generated or analyzed are contained within the present article.

Conflicts of Interest

The authors declare no conflict of interest.

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Plants 10 00729 g001 550
Figure 1. Percentage of parts of antidiabetic plants used for the treatment of diabetes in Bangladesh. Percentages were calculated as the ratio between the number of plant parts used belonging to a certain family and the total number of plants.
Figure 1. Percentage of parts of antidiabetic plants used for the treatment of diabetes in Bangladesh. Percentages were calculated as the ratio between the number of plant parts used belonging to a certain family and the total number of plants.
Plants 10 00729 g001
Table
Table 1. List of ethnomedicinal plants used for the treatment of diabetes in Bangladesh.
Table 1. List of ethnomedicinal plants used for the treatment of diabetes in Bangladesh.
Botanical NameFamilyLocal Name(s) aPart(s) UtilizedIn Vivo/In Vitro Study bReference(s)
Abroma augusta L.f.SterculiaceaeUlotkombolLeaf, bark, rootYes[19,20,21,22,23,24]
Abutilon indium Sweet var.MalvaceaePalu-lobboiLeafNo[25]
Acanthus ilicifolius L.AcanthaceaeHargozaRootYes[26]
Achyranthes aspera L.AmaranthaceaeApang, UpatlengraRoot, seed, whole plantYes[11,19]
Adiantum capillus-veneris L.AdiantaceaeBidhayapata, GobalelotaSeed, whole plantYes[11,27]
Aegle marmelos L. Corrêa.RutaceaeBelFruit, leafYes[13,28,29]
Allium sativum L.AmaryllidaceaeRosunRoot, whole plant, bulbYes[11,14,29,30]
Alocasia macrorrhizos L. G. DonAraceaeMankachuRhizome, whole plantYes[31]
Aloe vera L. Burm. f.AloaceaeGhritokumariLeafYes[32,33]
Alstonia scholaris L. R. Br.ApocynaceaeChaitanLeafYes[34,35]
Amaranthus spinosus L.AmaranthaceaeKatadengaLeaf, rootYes[29,36,37]
Amomum aromaticum Roxb.ZingiberaceaeElachFruitNo[13]
Amorphophallus campanulatus Blume ex DecneAraceaeOlTuberYes[13]
Andrographis paniculata Wall. ex NeesAcanthaceaeKalomeghLeaf, whole plantYes[11,14,38,39,40]
Anthocephalus chinensis (Lam.) A. Rich. exRubiaceaeKadamStem, barkNo[17,41]
Argemone Mexicana L.PapaveraceaeShialkantaStemYes[42,43,44,45,46]
Asparagus racemosus L.AsparagaceaeSotomuliRoot, whole plantYes[11,14,42,43,44,45,46,47,48]
Asteracantha longifolia L. NeesAcanthaceaeTalmakhnaSeedYes[49]
Azadirachta indica A. Juss.MeliaceaeNeemBark, leaf, seedYes[11,13,14,16,20,29,30,49,50,51,52,53,54]
Bambusa tulda Roxb.PoaceaeJowa bans, MitengaLeafNo[55]
Bombax ceiba L.BombacaceaeShimulBark, rootYes[42,44,45,47,56]
Bryophyllum pinnatum (Lam.) OkenCrassulaceaeJeusWhole plantYes[57]
Bunium persicum Bois.ApiaceaeKalo jeeraSeed, whole plantYes[11,14]
Caesalpinia crista L.FabaceaeNataLeafYes[58]
Cajanus cajan L. Millsp.FabaceaeMehndherLeaf, root, seedYes[19,29,41,42,44,45,47,55,56,58]
Canna indica L.CannaceaeSarbajaya, KalabotiLeaf, flowerNo[59]
Cardiospermum helicacabum L.SapindaceaePhutka, LataphutikiLeaf, fruitYes[58]
Carica papaya L.CaricaceaePepe, PapayaFruit, seedYes[28,60,61,62]
Carissa carandas L.ApocynaceaeKoromchaFruitYes[63]
Cassia fistula Linn.FabaceaeSonalu, bandor lathiLeaf, stem barkYes[64]
Cassia occidentalis L.LeguminosaeSonaliLeaf, root, fruitNo[21,28,60]
Cassia sophera L.LeguminosaeKasundaBark, leaf, seedNo[25]
Catharanthus roseus L. G. DonApocynaceaeNoyontaraLeafYes[2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,38,40,63,65]
Centella asiatica L. Urb.ApiaceaeThankuniLeaf, whole plantYes[11,13,14,29,30,65]
Clitoria ternatea L.FabaceaeAparajitaLeafYes[58,66]
Cinnamomum tamala T. Nees and EbermLauraceaeTejpataLeafYes[67,68,69,70]
Cinnamomum verum J. Presl.LauraceaeDaruchiniLeaf, barkYes[29,71]
Citrus aurantium L.RutaceaeJambura, BatabilebuFruitYes[29,72]
Citrus aurantifolia Christm. SwingleRutaceaeLebu, Kaghzilebu, PatilebuFruitYes[29]
Clerodendrum viscosum Vent.VerbenaceaeVant, Ghetu, Baik pataLeafYes[21,34,52,55,57]
Coccinia cordifolia L. Cogn.CucurbitaceaeTelakuchaLeaf, fruitYes[15,42,44,53,55,73,74,75,76]
Coccinia grandis L. J. VoigtCucurbitaceaeTelakuchaLeaf, stem, rootYes[13,20,22,29,32,33,34,37,38,43,45,46,50,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92]
Coccinia indica W. and A.CucurbitaceaeTelachukaFruit, leaf, root, wholeYes[11,14,93,94,95]
Cocos nucifera L.ArecaceaeNarikel, DabKernel of seed, fruit juiceYes[29,54]
Colocasia esculenta L.AraceaeKochu shakLeafYes[31,96]
Corchorus aestuans L.TiliaceaeTitabhaetYoung leafNo[67]
Costus speciosus Sm.CostaceaeKushthaRhizomeYes[43,45,46,49,97,98]
Cuminum cyminum L.ApiaceaeJeeraSeedYes[13,99]
Curculigo orchioides Gaertn.AmaryllidaceaeTalmuliRootYes[63,92,100,101,102]
Curcuma longa L.ZingiberaceaeHaludRhizomeYes[20,85,103,104]
Curcuma aromatica Salisb.ZingiberaceaeBan HaludStemNo[52]
Cuscuta reflexa Roxb.CuscutaceaeShornolata, TarulataStem, whole plantYes[30,52,64,105,106]
Cycas pectinata Buch.-HamCycadaceaeMonirajFruit, fruit stalkNo[17]
Cynodon dactylon L. Pers.PoaceaeDurba, DublaLeaf, whole plantYes[11,14,59,73,107]
Datura stramonium L.SolanaceaeDhoturaSeedYes[11,14,108,109]
Diospyros peregrine (Gaertn.) Gürke.EbenaceaeBilati gabFruitYes[32,110]
Diospyros discolor Wild.EbenaceaeBilati gabFruitNo[48]
Diplazium esculentum (Retz.) Sw.DryopteridaceaeDhekishakRootYes[37,111]
Drynaria quercifolia (L.) J. SmithPolypodiaceaePankhirajStemYes[21,34,112]
Eclipta alba L.AsteraceaeBringoraj, KalokeshiLeafYes[11,14,29,59,88,113]
Emblica officinalis Gaertn.EuphorbiaceaeAmlokiFruit, fruit pulpYes[13,20,25,114]
Enhydra fluctuans Lour.AsteraceaeHelenchaLeaf, stemYes[34,91,115,116]
Eupatorium odoratum L.CompositeaAssamlataLeaf, flowerYes[51,117]
Flacourtia indica (Burm. f.) Merr.FlacourtiaceaeBouchi, BoichiLeaf, fruitNo[13]
Ficus benghalensis L.MoraceaeBot, Kathali Pata BotLeafYes[11,14,50,118,119]
Ficus hispida L.f.MoraceaeDumur, KakdumurFruit, barkYes[13,22,26,28,40,49,57,60,86,94,120,121]
Ficus racemosa L.MoraceaeJagadumurBark, fruitYes[11,14,20,21,22,29,40,42,44,45,47,50,56,82,100,122,123,124]
Geodorum densiflorum (Lam.) Schltr.OrchidaceaeShonkhomuniWhole plantNo[22]
Glycosmis pentaphylla (Retz.) Corr.RutaceaeAshshaora, KawatutiLeafYes[36,90,125]
Gymnema sylvestre R. Br.AsclepiadaceaeMedhasingi, GorsharWhole plantYes[11,126]
Heliotropium indicum L.BoraginaceaeHatisurLeafYes[11,127]
Hemidesmus indicus L. R. Br.ApocynaceaeAnantomulRootYes[11,128]
Hibiscus rosa-sinensis L.MalvaceaeJaba, RaktajabaFlower, leafYes[25,129]
Hibiscus schizopetalus (Mast.) Hook. f.MalvaceaeShish jobaFruitYes[78,130]
Hiptage benghalensis (L.) Kurz.MalphigiaceaeMadhabilataFlower, rootYes[63,131]
Hoya parasitica Wall.AsclepiadaceaeChera pataLeafNo[25]
Hygrophila auriculata (Schumach.) HeineAcanthaceaeKulekhara, TalmakhnaSeedNo[86]
Justicia adhatoda L.AcanthaceaeBashokLeafYes[20,132]
Kalanchoe pinnata (Lamk.) Pers.CrassulaceaePatharkuchiLeafYes[42,43,44,45,46,47,56,58,73,133,134,135]
Lagerstroemia speciosa (L.) Pers.LythraceaeJarulLeaf, bark, seedYes[11,14,21,24,136,137,138]
Lannea coromandelica (Houtt.) Merr.AnacardiaceaeJiga, JikaBark, rootYes[22,34,40,139]
Lawsonia inermis L.LythraceaeMehedi, MendiLeafYes[49,51,73,120,140]
Leonurus sibiricus L.LamiaceaeRaktodrone, GumaLeafNo[29]
Mangifera indica L.AnacardiaceaeAamSeed, gum, leaf, barkYes[11,13,30,48,50,54,55,73,84,141,142]
Mikania cordata (Burm.f.) B. L. RobinsonAsteraceaeJarmanylataTop of young stem, leaf, flowerYes[13,61,92,143,144]
Mikania scandens (L.) Willd.AsteraceaeMayalotaLeafYes[16,145]
Mimosa pudica L.FabaceaeLojjaboti, Sada LojjabotiWhole plantYes[11,14,146,147]
Moghania macrophylla (Willd.) KuntzeLeguminosaeBlumai-kongdaRootNo[148]
Momordica charantia L.CucurbitaceaeKorola, UstaFruit, leaf, whole plantYes[11,13,14,15,22,29,32,34,36,40,43,44,45,47,56,57,80,83,84,85,87,133,149,150]
Momordica cochinchinensis (Lour.) Spreng.CucurbitaceaeKakrolFruitYes[29,151]
Moringa oleifera Lam.MoringaceaeSajna, Sajina, KhonjhonLeaf, fruit, rootYes[19,22,29,38,40,45,47,79,152,153]
Murraya koenigii (L.) SprengRutaceaeGandhal, GirinimLeafYes[29,61,154]
Mucuna pruriens (L.) DC.FabaceaeAlkushiLeaf, seedYes[136,155]
Musa ornate L.MusaceaeRamkolaSpadixNo[65]
Musa sapientum L.MusaceaeKola, Aita kolaFruit, cluster of flowers, inner trunk, young leafYes[11,13,38,40,45,156,157]
Nymphaea nouchali Burm.f.NymphaeaceaeShapla, Sada ShaplaLeaf, whole plant, stemYes[19,79,158]
Ocimum basilicum L.LamiaceaeBabui TulshiLeafYes[57,159,160]
Ocimum sanctum L.LamiaceaeKrisno Tulshi, Kalo TulshiWhole plant, Leaf, barkYes[11,14,57,85,159,161]
Ocimum tenuiflorum L.LamiaceaeTulshiLeaf, seedYes[19,162]
Pavetta indica L.RubiaceaeKukurchuraLeaf, rootNo[58]
Phragmites australis (Cav.) Trin. ex Steud.PoaceaeNol-khagraWhole plantNo[60]
Phyllanthus emblica L.PhyllanthaceaeAmlokiFruit, leaf, seed, whole plantYes[11,14,30,34,79,149,163,164]
Piper betle L.PiperaceaePaanLeafYes[49,165]
Piper cubeba L.F.PiperaceaeKabab chiniFruitYes[13,166]
Piper longum L.PiperaceaePipul, PiplaFruitYes[13,91,167]
Polyalthia longifolia (Sonn.) Thwaites (PL)AnnonaceaeDebdaruBarkYes[57,85,168]
Psidium guajava L.MyrtaceaePeyaraLeaf, bark, fruit, seedYes[13,19,52,60,169,170]
Punica granatum L.LythraceaeDalimFruit, seedYes[54,171]
Saccharum spontaneum L.PoaceaeKash, KhagraLeafNo[93]
Senna occidentalis (L.) Link.FabaceaeJunjuneaLeafYes[53,172]
Scoparia dulcis L.ScrophulariaceaeBandhoney, ChiniguraLeaf, whole plantYes[29,36,58,59,73,92,115,136,173]
Sida cordifolia L.MalvaceaeBerelaBark of rootYes[17,20,174]
Smilax zeylanica L.SmilacaceaeKumarilataStemYes[136,175,176]
Solanum nigrum L.SolanaceaeKakmachi, Phuti begunLeafYes[17,177,178]
Solanum melongena L.SolanaceaeBegunFruitYes[179]
Solanum torvum SwartzSolanaceaeTit baegun, Gotha begunLeaf, root, fruitYes[12,13,21,76,99,180]
Stephania japonica (Thunb.) MiersMenispermaceaeHar joraLeaf, whole plantYes[100,181]
Stevia rebaudiana BertoniAsteraceaeMistipataLeafYes[67,182,183]
Swietenia macrophylla King.MeliaceaeMahoganyLeaf, barkYes[84,91,184,185]
Swietenia mahagoni L. Jacq.MeliaceaeMahoganySeedYes[11,14,186,187,188]
Swertia chirata (Roxb. ex Fleming) H. KarstGentianaceaeChirotaRoot, Whole plantNo[11,13,14,15]
Syzygium aqueum (Burm.f.) AlstonMyrtaceaeJamrulFruitYes[34,189]
Syzygium cumini L. SkeelsMyrtaceaeJamLeaf, bark, seedYes[11,13,15,22,26,29,31,32,35,42,44,45,47,56,59,63,77,84,86,90,123,133,149,190,191]
Tabernaemontana coronaria Willd.ApocynaceaeTagar, DudhphulLeaf, stem bark, latexNo[58]
Tamarindus indica L.FabaceaeTetulSeed, fruitYes[13,17,21,24,28,41,54,80,192]
Tagetes patula L.AsteraceaeGendaLeafNo[75]
Terminalia arjuna W.and A.CombretaceaeArjunSeed, barkYes[11,14,20,115,120,193]
Terminalia bellerica (Gaertn.) Roxb.CombretaceaeBoheraFruitNo[13,17,194]
Terminalia bellirica L.CombretaceaeBohera, Jonglee boheraSeedYes[11,195]
Terminalia chebula Retz.CombretaceaeHoritukiSeed, fruit, leafYes[11,13,14,34,57,196]
Tinospora cordifolia Hook. F. and Thoms.MenispermaceaeGulanchalota, GulanchaBark, leaf, root, whole plant, stemYes[11,13,19,20,32,197]
Tinospora crispa (L.) Hook. F. and Thoms.MenispermaceaGorinchaLeafYes[22,198,199]
Tragia involucrata L.EuphorbiaceaeBichchutiLeaf, rootYes[22,200]
Trichosanthes kirilowii Maxim.CucurbitaceaeLota-mohakaalWhole plantYes[24,201]
Trigonella foenum-graecum L.FabaceaeMethiSeed, whole plantYes[11,14,202]
Vernonia anthelmintica Willd.AsteraceaeSomrajWhole plantYes[11,14,203,204]
Vinca rosea L.ApocynaceaeGolapi NoyontaraLeaf, stemYes[11,14,205,206]
Vitex negundo L.LamiaceaeNishinda, SamaluLeafYes[11,14,207,208,209,210]
Wedelia chinensis (Osbeck) Merr.AsteraceaeBhimrajWhole plantYes[29,61,211,212]
Withania somnifera (L.) DunalSolanaceaeAswagandhaLeaf, root, whole plantYes[11,14,213,214]
Xanthium indicum Linn.AsteraceaeBanokra, GhagraLeaf, root, stem, whole plantYes[42,43,46,215,216,217]
Zea mays L.PoaceaeBotthaFruit, rootYes[54,218]
Zizyphus mauritiana Lam.RhamnaceaeKul, BoroiSeedYes[28,219,220]
a All local name(s) are in the Bengali language. Local name(s) are adapted from survey literatures, Ethnobotanical Database of Bangladesh, and Medicinal Plants Database of Bangladesh. b The presence of antidiabetic effect (in vivo and in vitro study) was analyzed in global perspective.
Table
Table 2. Presentation of the antidiabetic plant species of Bangladesh in 61 families.
Table 2. Presentation of the antidiabetic plant species of Bangladesh in 61 families.
FamiliesNo. of Species% of Species aFamiliesNo. of Species% of Species a
Asteraceae96.29Adiantaceae10.70
Fabaceae96.29Aloaceae10.70
Cucurbitaceae74.89Annonaceae10.70
Acanthaceae64.19Arecaceae10.07
Apocynaceae64.19Asparagaceae10.70
Lamiaceae53.49Bombacaceae10.70
Poaceae53.49Boraginaceae10.70
Rutaceae53.49Cannaceae10.70
Combretaceae42.79Caricaceae10.70
Malvaceae42.79Compositea10.70
Solanaceae42.79Costaceae10.70
Apiaceae32.09Cuscutaceae10.70
Araceae32.09Cycadaceae10.70
Leguminosae32.09Dryopteridaceae10.70
Lythraceae32.09Flacourtiaceae10.70
Meliaceae32.09Gentianaceae10.70
Menispermaceae32.09Malphigiaceae10.70
Moraceae32.09Moringaceae10.70
Myrtaceae32.09Nymphaeaceae10.70
Piperaceae32.09Orchidaceae10.70
Zingiberaceae32.09Papaveraceae10.70
Amaranthaceae21.40Phyllanthaceae10.70
Amaryllidaceae21.40Polypodiaceae10.70
Anacardiaceae21.40Rhamnaceae10.70
Asclepiadaceae21.40Sapindaceae10.70
Crassulaceae21.40Scrophulariaceae10.70
Ebenaceae21.40Smilacaceae10.70
Euphorbiaceae21.40Sterculiaceae10.70
Lauraceae21.40Tiliaceae10.70
Musaceae21.40Verbenaceae10.70
Rubiaceae21.40
a Percentages were calculated as the ratio between the number of plants belonging in a certain family and the total number of plants.
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Rahman, M.M.; Uddin, M.J.; Reza, A.S.M.A.; Tareq, A.M.; Emran, T.B.; Simal-Gandara, J. Ethnomedicinal Value of Antidiabetic Plants in Bangladesh: A Comprehensive Review. Plants 2021, 10, 729. https://doi.org/10.3390/plants10040729

AMA Style

Rahman MM, Uddin MJ, Reza ASMA, Tareq AM, Emran TB, Simal-Gandara J. Ethnomedicinal Value of Antidiabetic Plants in Bangladesh: A Comprehensive Review. Plants. 2021; 10(4):729. https://doi.org/10.3390/plants10040729

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Rahman, Md. Masudur, Md. Josim Uddin, A. S. M. Ali Reza, Abu Montakim Tareq, Talha Bin Emran, and Jesus Simal-Gandara. 2021. "Ethnomedicinal Value of Antidiabetic Plants in Bangladesh: A Comprehensive Review" Plants 10, no. 4: 729. https://doi.org/10.3390/plants10040729

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