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Dietary Fiber and Chronic Inflammation—Mechanisms, Biomarkers and Therapeutic Potential

A special issue of Nutrients (ISSN 2072-6643). This special issue belongs to the section "Nutritional Immunology".

Deadline for manuscript submissions: 15 February 2026 | Viewed by 910

Special Issue Editor


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Guest Editor
School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: dietary nutrition and chronic disease prevention; cereal nutrition and health; new food processing technology and functional food development
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Special Issue Information

Dear Colleagues,

Chronic inflammation is a fundamental driver of numerous non-communicable diseases (NCDs), including cardiovascular disease, type 2 diabetes, certain cancers, and neurodegenerative disorders. Dietary fiber, long recognized for its role in digestive health, is now emerging as a critical modulator of systemic inflammation through complex interactions with the gut microbiota and host immunity. This Special Issue invites original research, reviews, and perspectives exploring the multifaceted relationship between dietary fiber intake and chronic inflammation. We seek contributions that elucidate the following:

  1. Mechanistic Insights: How do specific fibers (e.g., beta-glucans, resistant starch, inulin, pectins) influence gut microbial composition and function (e.g., SCFA production), gut barrier integrity, and downstream immune signaling pathways?
  2. Biomarkers and Modulation: What are the sensitive and specific biomarkers (e.g., inflammatory cytokines, acute-phase proteins, microbial metabolites) reflecting the anti-inflammatory effects of fiber? How do the dose, type, and source of fiber impact these biomarkers in different populations?
  3. Clinical Translation: What is the evidence from human intervention trials (RCTs, mechanistic studies) supporting the efficacy of dietary fiber in preventing or ameliorating inflammation-driven chronic diseases? How do factors like baseline microbiota, genetics, and diet interact?
  4. Personalized Nutrition: Can we define fiber requirements or specific fiber recommendations tailored to individual gut microbiota profiles or inflammatory status for optimal prevention/therapy?
  5. Public Health and Food Innovation: What are the implications for dietary guidelines and the development of novel fiber-enriched functional foods or supplements targeting inflammation?

We encourage submissions utilizing diverse methodologies, from in vitro and animal models to advanced human studies (omics, metabolomics, immune profiling), epidemiological investigations, and interventional trials.

Prof. Dr. Lihua Song
Guest Editor

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Keywords

  • dietary fiber
  • chronic inflammation
  • gut microbiome / gut microbiota
  • metabolites
  • inflammatory biomarkers
  • prebiotics
  • inflammatory diseases
  • anti-inflammation signaling pathway

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Published Papers (1 paper)

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Research

20 pages, 5043 KB  
Article
Co-Fermented Black Barley and Quinoa Alleviate Hepatic Inflammation via Regulating Metabolic Disorders and Gut Microbiota in Mice Fed with High-Fat Diet
by Fenfen Wei, Huibin Jiang, Chuang Zhu, Lingyue Zhong, Zihan Lin, Yan Wu and Lihua Song
Nutrients 2025, 17(20), 3228; https://doi.org/10.3390/nu17203228 - 15 Oct 2025
Viewed by 718
Abstract
Background: High-fat diet (HFD)-induced hepatic inflammation impairs liver function, promotes fibrosis, and may progress to hepatocellular carcinoma, thereby posing a significant threat to human health. Meanwhile, fermented whole grains have attracted growing attention owing to their diverse beneficial biological properties. Methods: [...] Read more.
Background: High-fat diet (HFD)-induced hepatic inflammation impairs liver function, promotes fibrosis, and may progress to hepatocellular carcinoma, thereby posing a significant threat to human health. Meanwhile, fermented whole grains have attracted growing attention owing to their diverse beneficial biological properties. Methods: In this study, we investigated the effects of co-fermented quinoa and black barley (FG) on HFD-induced chronic hepatic inflammation using male C57BL/6J mice. Results: FG intervention significantly attenuated excessive body weight gain and reduced hepatic adipose accumulation in HFD-fed mice. Furthermore, FG alleviated hepatic inflammation by downregulating the transcriptional and protein levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6), as well as the transcriptional levels of toll-like receptor 4 (Tlr4), cluster of differentiation 14 (CD14), and myeloid differentiation primary response gene 88 (Myd88). Metabolomic analysis identified several hepatic and fecal metabolites, such as vitamin A and L-tryptophan, that were upregulated by FG treatment. The strong negative correlation of these metabolites with hepatic inflammatory markers suggests their role as putative mediators of FG’s anti-inflammatory action. Additionally, FG enhanced the relative abundances of probiotic taxa, including g_Lawsonibacter, g_Acetatifactor, and s_Bifidobacterium cricetid, and upregulated the microbial bile acid (BA) biosynthesis pathway. Notably, these enriched probiotics exhibited a positive correlation with the aforementioned fecal metabolites. Conclusions: Our findings suggest that FG has the potential to alleviate HFD-induced hepatic inflammation by restoring gut microbiota imbalance and reversing metabolic disorders. Full article
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