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Medicinal Chemistry of Natural Products in Metabolic, Inflammatory and Oxidative...
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Medicinal Chemistry of Natural Products in Metabolic, Inflammatory and Oxidative Diseases

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Phytochemistry".

Deadline for manuscript submissions: closed (31 May 2024) | Viewed by 11479

Special Issue Editors

Dr. Ochuko Lucky L. Erukainure

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Guest Editor
Department of Biochemistry School of Life Sciences University of KwaZulu-Natal Durban 4000, South Africa
Interests: functional food; toxicology; metabolic diseases; natural products
Special Issues, Collections and Topics in MDPI journals
Dr. Chika Ifeanyi Chukwuma

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Guest Editor
Center for Quality of Health and Living, Faculty of Health Sciences, Central University of Technology, Bloemfontein 9301, South Africa
Interests: functional food; diabetes; oxidative stress; medicinal plant

Special Issue Information

Dear Colleagues,

Many impairments that compromise the health and quality of life of the adult population are linked to oxidative stress and metabolic disorders, which predisposes them to metabolic diseases, including diabetes, obesity and cardiovascular diseases. Natural products, such as phytochemicals, plant-based functional foods and nutraceuticals with antioxidative and anti-inflammatory qualities, have been frequently used as supplemental treatments for these diseases because of their perceived holistic function properties and minimal toxicity issues. Thus, natural products could be seen as potential effective therapeutic agents for multifactorial disorders such as metabolic disorders and oxidative complications.

The aim of the Special Issue is to compile original high-quality research publications of that present experimental and clinical data on the potential therapeutic value of natural products, including phytochemicals and plant-based functional foods, in the treatment of oxidative and metabolic diseases. The research topic collection will also accommodate well-written review articles that provide novel interpretations of existing and current scientific knowledge within the scope of the Special Issue, providing novel therapeutic insights to bridge current gaps. The thematic areas will include the therapeutic relevance of natural products in the following oxidative and/or metabolic disorders:

  • Diabetes and obesity;
  • Cardiovascular diseases;
  • Oxidative stress and inflammation.

Dr. Ochuko Lucky Erukainure
Dr. Chika Ifeanyi Chukwuma
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • phytochemicals
  • functional foods
  • oxidative stress
  • diabetes
  • obesity
  • cardiovascular diseases

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Published Papers (4 papers)

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Research

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17 pages, 5449 KiB  
Article
Croton gratissimus Burch Herbal Tea Exhibits Anti-Hyperglycemic and Anti-Lipidemic Properties via Inhibition of Glycation and Digestive Enzyme Activities
by Veronica F. Salau, Kolawole A. Olofinsan, Abhay P. Mishra, Olufemi A. Odewole, Corinne R. Ngnameko and Motlalepula G. Matsabisa
Plants 2024, 13(14), 1952; https://doi.org/10.3390/plants13141952 - 17 Jul 2024
Viewed by 929
Abstract
Over the years, the world has continued to be plagued by type 2 diabetes (T2D). As a lifestyle disease, obese individuals are at higher risk of developing the disease. Medicinal plants have increasingly been utilized as remedial agents for managing metabolic syndrome. The [...] Read more.
Over the years, the world has continued to be plagued by type 2 diabetes (T2D). As a lifestyle disease, obese individuals are at higher risk of developing the disease. Medicinal plants have increasingly been utilized as remedial agents for managing metabolic syndrome. The aim of the present study was to investigate the in vitro anti-hyperglycemic and anti-lipidemic potential of Croton gratissimus herbal tea infusion. The inhibitory activities of C. gratissimus on carbohydrate (α-glucosidase and α-amylase) and lipid (pancreatic lipase) hydrolyzing enzymes were determined, and the mode of inhibition of the carbohydrate digestive enzymes was analyzed and calculated via Lineweaver–Burk plots and Michaelis Menten’s equation. Its effect on Advanced Glycation End Product (AGE) formation, glucose adsorption, and yeast glucose utilization were also determined. High-performance liquid chromatography (HPLC) was used to quantify the possible phenolic compounds present in the herbal tea infusion, and the compounds were docked with the digestive enzymes. C. gratissimus significantly (p < 0.05) inhibited α-glucosidase (IC50 = 60.56 ± 2.78 μg/mL), α-amylase (IC50 = 35.67 ± 0.07 μg/mL), as well as pancreatic lipase (IC50 = 50.27 ± 1.51 μg/mL) in a dose-dependent (15–240 µg/mL) trend. The infusion also inhibited the non-enzymatic glycation process, adsorbed glucose effectively, and enhanced glucose uptake in yeast cell solutions at increasing concentrations. Molecular docking analysis showed strong binding affinity between HPLC-quantified compounds (quercetin, caffeic acid, gallic acid, and catechin) of C. gratissimus herbal tea and the studied digestive enzymes. Moreover, the herbal tea product did not present cytotoxicity on 3T3-L1 cell lines. Results from this study suggest that C. gratissimus herbal tea could improve glucose homeostasis and support its local usage as a potential anti-hyperglycemic and anti-obesogenic agent. Further in vivo and molecular studies are required to bolster the results from this study. Full article
(This article belongs to the Special Issue Medicinal Chemistry of Natural Products in Metabolic, Inflammatory and Oxidative Diseases)
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18 pages, 3559 KiB  
Article
Phytochemical Properties of Croton gratissimus Burch (Lavender Croton) Herbal Tea and Its Protective Effect against Iron-Induced Oxidative Hepatic Injury
by Paul V. Ncume, Veronica F. Salau, Sibahle Mtshali, Kolawole A. Olofinsan, Ochuko L. Erukainure and Motlalepula G. Matsabisa
Plants 2023, 12(16), 2915; https://doi.org/10.3390/plants12162915 - 10 Aug 2023
Cited by 3 | Viewed by 1812
Abstract
Oxidative stress plays a vital role in the pathogenesis and progression of various liver diseases. Traditional medicinal herbs have been used worldwide for the treatment of chronic liver diseases due to their high phytochemical constituents. The present study investigated the phytochemical properties of [...] Read more.
Oxidative stress plays a vital role in the pathogenesis and progression of various liver diseases. Traditional medicinal herbs have been used worldwide for the treatment of chronic liver diseases due to their high phytochemical constituents. The present study investigated the phytochemical properties of Croton gratissimus (lavender croton) leaf herbal tea and its hepatoprotective effect on oxidative injury in Chang liver cells, using an in vitro and in silico approach. C. gratissimus herbal infusion was screened for total phenolic and total flavonoid contents as well as in vitro antioxidant capacity using ferric reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picryl-hydrazyl (DPPH) methods. Oxidative hepatic injury was induced by incubating 0.007 M FeSO4 with Chang liver cells which has been initially incubated with or without different concentrations (15–240 μg/mL) of C. gratissimus infusion or the standard antioxidants (Gallic acid and ascorbic acid). C. gratissimus displayed significantly high scavenging activity and ferric reducing capacity following DPPH and FRAP assays, respectively. It had no cytotoxic effect on Chang liver cells. C. gratissimus also significantly elevated the level of hepatic reduced glutathione (GSH), superoxide dismutase (SOD), and catalase activities as well as suppressed the malondialdehyde (MDA) level in oxidative hepatic injury. Liquid Chromatography–Mass Spectrometry (LC-MS) analysis of the herbal tea revealed the presence of 8-prenylnaringenin, flavonol 3-O-D-galactoside, caffeine, spirasine I, hypericin, pheophorbide-a, and 4-methylumbelliferone glucuronide. In silico oral toxicity prediction of the identified phytochemicals revealed no potential hepatotoxicity. Molecular docking revealed potent molecular interactions of the phytochemicals with SOD and catalase. The results suggest the hepatoprotective and antioxidative potentials of C. gratissimus herbal tea against oxidative hepatic injury. Full article
(This article belongs to the Special Issue Medicinal Chemistry of Natural Products in Metabolic, Inflammatory and Oxidative Diseases)
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Review

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19 pages, 710 KiB  
Review
A Review of the Role of an Anthocyanin, Cyanidin-3-O-β-glucoside in Obesity-Related Complications
by Ponnuvel Deepa, Minji Hong, Kandhasamy Sowndhararajan and Songmun Kim
Plants 2023, 12(22), 3889; https://doi.org/10.3390/plants12223889 - 17 Nov 2023
Cited by 5 | Viewed by 2899
Abstract
Obesity has become a major health issue worldwide and obese individuals possess higher levels of adipose tissue when compared with healthy individuals. Obesity is highly associated with the development of different chronic diseases, such as diabetes, cardiovascular diseases, hypertension, cancers, etc. Previous studies [...] Read more.
Obesity has become a major health issue worldwide and obese individuals possess higher levels of adipose tissue when compared with healthy individuals. Obesity is highly associated with the development of different chronic diseases, such as diabetes, cardiovascular diseases, hypertension, cancers, etc. Previous studies established that anthocyanin compounds play an important role in attenuating obesity-related consequences. Among various anthocyanin compounds, cyanidin-3-O-β-glucoside (C3G) is the most important component and is widely distributed in various colored edible plant materials, especially berries, cherries, black rice, purple corn, etc. In recent decades, several studies have reported the therapeutical properties of C3G. C3G has various biological properties and health benefits, such as antioxidant, antimicrobial, anti-inflammatory, antidiabetic, anti-obesity, neuroprotective, anticancer, etc. In this review, we summarized the in vitro and in vivo studies in relation to the role of C3G in obesity-related complications. Several mechanistic studies demonstrated that C3G maintains the metabolism of glucose, fatty acids, and lipids by regulating different genes and signaling pathways. It could be concluded that the consumption of C3G protects healthy individuals from obesity-related issues by maintaining body weight and regulating their metabolism and energy balance. This review provides some important signaling pathways/targets of C3G to facilitate the prevention and treatment of obesity, leading to the development of important food supplements. Full article
(This article belongs to the Special Issue Medicinal Chemistry of Natural Products in Metabolic, Inflammatory and Oxidative Diseases)
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14 pages, 1080 KiB  
Review
A Review of the Potential Health Benefits of Nigella sativa on Obesity and Its Associated Complications
by Siti Hajar Adam, Izuddin Fahmy Abu, Datu Agasi Mohd Kamal, Ami Febriza, Mohd Izhar Ariff Mohd Kashim and Mohd Helmy Mokhtar
Plants 2023, 12(18), 3210; https://doi.org/10.3390/plants12183210 - 8 Sep 2023
Cited by 3 | Viewed by 4591
Abstract
Obesity has become a worldwide epidemic and its prevalence continues to increase at an alarming rate. It is considered a major risk factor for the development of several comorbidities, including type 2 diabetes, stroke, other cardiovascular diseases and even cancer. Conventional treatments for [...] Read more.
Obesity has become a worldwide epidemic and its prevalence continues to increase at an alarming rate. It is considered a major risk factor for the development of several comorbidities, including type 2 diabetes, stroke, other cardiovascular diseases and even cancer. Conventional treatments for obesity, such as dietary interventions, exercise and pharmacotherapy, have proven to have limited effectiveness and are often associated with undesirable side effects. Therefore, there is a growing interest in exploring alternative therapeutic approaches. Nigella sativa (NS), a medicinal plant with multiple pharmacological properties, has gained attention due to its potential role in the treatment of obesity and its associated complications. The aim of this review is therefore to assess the effects of NS on obesity and its complications and to provide insights into the underlying mechanisms. From this review, NS appears to play a complementary or supportive role in the treatment of obesity and its complications. However, future studies are needed to verify the efficacy of NS in the treatment of obesity and its complications and to prove its safety so that it can be introduced in patients with obesity. Full article
(This article belongs to the Special Issue Medicinal Chemistry of Natural Products in Metabolic, Inflammatory and Oxidative Diseases)
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