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Food Bioactive Components, Nutrition and Immune Modulation

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Bioactives and Nutraceuticals".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 9949

Special Issue Editor


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Guest Editor
School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan
Interests: immunonutrition; clinical nutrition; functional food; inflammatory diseases

Special Issue Information

Dear Colleagues, 

Food technologies utilize many traditional techniques, such as fermentation, extraction, encapsulation, enzyme digestion, etc., to produce new food ingredients, reduce or eliminate allergens, and add specific nutrient or functional ingredients that may modify food compositions. Nowadays, the innovation practices of product development in the food industry provide various functions and mechanisms of specific food components in health promotion and/or disease prevention. Especially during the COVID-19 pandemic, immune boosting has become a trending topic. Understanding the mechanisms of nutrients or bioactive components in immune responses to vaccination, lowered inflammatory and allergic reactions, and improved diversity immune markers in various disease states (including cancer, cardiovascular disease, diabetes, cognitive impairment, and obesity) is important to gain a good scientific basis to substantiate the approval of health claim. In this Special Issue, health claims in relation to specific food or food constituents and the immune function or immune system, which contribute to body defenses against external agent and stimulation of immunological responses, are mostly welcome.

Importantly, the exact active ingredient of natural origin extract must be reported in the submitted research manuscript, since papers describing the effects of mixed extraction from natural origin are not in the scope of the journal.

Prof. Dr. Chiu Li Yeh
Guest Editor

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Keywords

  • functional food
  • bioactive compounds
  • immunonutrition
  • inflammatory mechanism modulating
  • allergy

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Published Papers (3 papers)

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Research

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17 pages, 3118 KiB  
Article
Tryptamine, a Microbial Metabolite in Fermented Rice Bran Suppressed Lipopolysaccharide-Induced Inflammation in a Murine Macrophage Model
by Afifah Zahra Agista, Sharon Angela Tanuseputero, Takuya Koseki, Ardiansyah, Slamet Budijanto, Halima Sultana, Yusuke Ohsaki, Chiu-Li Yeh, Suh-Ching Yang, Michio Komai and Hitoshi Shirakawa
Int. J. Mol. Sci. 2022, 23(19), 11209; https://doi.org/10.3390/ijms231911209 - 23 Sep 2022
Cited by 5 | Viewed by 2304
Abstract
Fermentation is thought to alter the composition and bioavailability of bioactive compounds in rice bran. However, how this process affects the anti-inflammatory effects of rice bran and the bioactive compounds that might participate in this function is yet to be elucidated. This study [...] Read more.
Fermentation is thought to alter the composition and bioavailability of bioactive compounds in rice bran. However, how this process affects the anti-inflammatory effects of rice bran and the bioactive compounds that might participate in this function is yet to be elucidated. This study aimed to isolate bioactive compounds in fermented rice bran that play a key role in its anti-inflammatory function. The fermented rice bran was fractionated using a succession of solvent and solid-phase extractions. The fermented rice bran fractions were then applied to lipopolysaccharide (LPS)-activated murine macrophages to evaluate their anti-inflammatory activity. The hot water fractions (FRBA), 50% ethanol fractions (FRBB), and n-hexane fractions (FRBC) were all shown to be able to suppress the pro-inflammatory cytokine expression from LPS-stimulated RAW 264.7 cells. Subsequent fractions from the hot water fraction (FRBF and FRBE) were also able to reduce the inflammatory response of these cells to LPS. Further investigation revealed that tryptamine, a bacterial metabolite of tryptophan, was abundantly present in these extracts. These results indicate that tryptamine may play an important role in the anti-inflammatory effects of fermented rice bran. Furthermore, the anti-inflammatory effects of FRBE and tryptamine may depend on the activity of the aryl hydrocarbon receptor. Full article
(This article belongs to the Special Issue Food Bioactive Components, Nutrition and Immune Modulation)
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17 pages, 3125 KiB  
Article
Curcumin Remedies Testicular Function and Spermatogenesis in Male Mice with Low-Carbohydrate-Diet-Induced Metabolic Dysfunction
by Chih-Wei Tsao, Pei-Shan Ke, Hsin-Yi Yang, Ting-Chia Chang and Chin-Yu Liu
Int. J. Mol. Sci. 2022, 23(17), 10009; https://doi.org/10.3390/ijms231710009 - 2 Sep 2022
Cited by 6 | Viewed by 3192
Abstract
Increasing reports on the significance of dietary patterns in reproduction have arisen from both animal and human studies, suggesting an interactive association between nutrition and male fertility. The aim of this study was to investigate the effects of curcumin supplementation on low-carbohydrate-diet-induced metabolic [...] Read more.
Increasing reports on the significance of dietary patterns in reproduction have arisen from both animal and human studies, suggesting an interactive association between nutrition and male fertility. The aim of this study was to investigate the effects of curcumin supplementation on low-carbohydrate-diet-induced metabolic dysfunction, testicular antioxidant capacity, apoptosis, inflammation and spermatogenesis in male mice. Male C57BL/6 mice were fed a normal diet (AIN-93M group, n = 12) and a low-carbohydrate diet for 12 weeks (LC group, fed with low-carbohydrate diet, n = 48), and mice randomly chosen from the LC group were later fed their original diet (LC group, n = 12). This diet was changed to AIN-93M feed (LC/AIN-93M group, n = 12), a ketogenic diet (LC/KD group, n = 12), or a ketogenic diet treated with curcumin supplementation for the final 6 weeks (LC/KDCu group, n = 12). A poor sperm morphology and mean testicular biopsy score (MTBS) were observed in the LC and LC/KD groups, but they were eliminated by the normal diet or ketogenic diet with curcumin. The LC group exhibited a lower testicular testosterone level and a lower 17β-HSD activity and protein expression. This also enhanced apoptosis protein expressions in testis tissue, including Bax/BCl2, cleaved caspase 3, PARP and NF-κB. Meanwhile, we found a statistically significant increase in lipid peroxidation and decreased superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase levels in the LC group. Our study indicated that a replacement of a normal diet or ketogenic diet supplemented with curcumin attenuated poor semen quality and reduced testosterone levels by the LC diet by reducing oxidative stress. Full article
(This article belongs to the Special Issue Food Bioactive Components, Nutrition and Immune Modulation)
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Review

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25 pages, 2441 KiB  
Review
The Impacts of Cholesterol, Oxysterols, and Cholesterol Lowering Dietary Compounds on the Immune System
by Rintaro Yanagisawa, Chaoqi He, Akira Asai, Michael Hellwig, Thomas Henle and Masako Toda
Int. J. Mol. Sci. 2022, 23(20), 12236; https://doi.org/10.3390/ijms232012236 - 13 Oct 2022
Cited by 9 | Viewed by 3851
Abstract
Cholesterol and its oxidized forms, oxysterols, are ingested from foods and are synthesized de novo. Cholesterol and oxysterols influence molecular and cellular events and subsequent biological responses of immune cells. The amount of dietary cholesterol influence on the levels of LDL cholesterol and [...] Read more.
Cholesterol and its oxidized forms, oxysterols, are ingested from foods and are synthesized de novo. Cholesterol and oxysterols influence molecular and cellular events and subsequent biological responses of immune cells. The amount of dietary cholesterol influence on the levels of LDL cholesterol and blood oxysterols plays a significant role in the induction of pro-inflammatory state in immune cells, leading to inflammatory disorders, including cardiovascular disease. Cholesterol and oxysterols synthesized de novo in immune cells and stroma cells are involved in immune homeostasis, which may also be influenced by an excess intake of dietary cholesterol. Dietary compounds such as β-glucan, plant sterols/stanols, omega-3 lipids, polyphenols, and soy proteins, could lower blood cholesterol levels by interfering with cholesterol absorption and metabolism. Such dietary compounds also have potential to exert immune modulation through diverse mechanisms. This review addresses current knowledge about the impact of dietary-derived and de novo synthesized cholesterol and oxysterols on the immune system. Possible immunomodulatory mechanisms elicited by cholesterol-lowering dietary compounds are also discussed. Full article
(This article belongs to the Special Issue Food Bioactive Components, Nutrition and Immune Modulation)
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