scholarly journals A Comprehensive Analysis of the Colonic Flora Diversity, Short Chain Fatty Acid Metabolism, Transcripts, and Biochemical Indexes in Heat-Stressed Pigs

2021 ◽  
Vol 12 ◽  
Author(s):  
Canying Hu ◽  
Xueting Niu ◽  
Shengwei Chen ◽  
Jiaying Wen ◽  
Minglong Bao ◽  
...  
Keyword(s):  
Immune Response ◽  
Intestinal Microbiota ◽  
Lactobacillus Reuteri ◽  
Immunoglobulin A ◽  
Short Chain Fatty Acids ◽  
Mucosal Damage ◽  
Sensu Stricto ◽  
Short Chain ◽  
Signal Pathways ◽  
Blood Biochemical

Heat stressed pigs show typical characteristics of inflammatory bowel disease (IBD). However, little is known about the pathogenesis of heat stress (HS)-induced IBD in pigs. In this study, we determined the effects of HS on colon morphology, intestinal microbiota diversity, transcriptome genes (transcripts), and short chain fatty acids (SCFAs) metabolism in pigs. In addition, the correlation among these parameters was analyzed by weighted gene co-expression network analysis. Results showed that the liver and kidney functions related to blood biochemical indexes were partially changed in pigs under HS. Furthermore, the levels of diamine oxidase and D-lactic acid were significantly increased, whereas the levels of secretory immunoglobulin A were decreased. The integrity of colonic tissue was damaged under HS, as bleeding, lymphatic infiltration, and villi injury were observed. The concentrations of SCFAs in the colon, such as acetic acid and butyric acid, were decreased significantly. In addition, the composition of colon microbiota, such as decrease in Lactobacillus johnsonii, Lactobacillus reuteri and increase in Clostridium sensu stricto 1 of day 7 and 14 while under HS. These changes were associated with changes in the concentration of SCFAs and biochemical indexes above mentioned. Differentially expressed genes were enriched in the nucleotide-binding oligomerization domain-like receptor signaling pathway, Th17 cell differentiation, and IBD pathway, which were also associated with the changes in SCFAs. Thus, the structure, diversity of intestinal microorganisms, and changes in the levels of SCFAs in colon of heat stressed pigs changed significantly, contributing to the activation of immune response and inflammatory signal pathways and causing abnormal physiological and biochemical indexes and intestinal mucosal damage. These results highlight the interconnections between intestinal microbiota, SCFAs, and immune response and their role in the pathogenesis of stress induced IBD therapy.

scholarly journals Evaluation of intestinal microbiota, short-chain fatty acids, and immunoglobulin a in diversion colitis

2021 ◽  
Vol 25 ◽  
pp. 100892
Author(s):  
Kentaro Tominaga ◽  
Atsunori Tsuchiya ◽  
Takeshi Mizusawa ◽  
Asami Matsumoto ◽  
Ayaka Minemura ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Intestinal Microbiota ◽  
Immunoglobulin A ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Diversion Colitis ◽  
Chain Fatty Acids

Depletion of gut secretory immunoglobulin A coated Lactobacillus reuteri is associated with gestational diabetes mellitus-related intestinal mucosal barrier damage

2021 ◽  
Author(s):  
Haowen Zhang ◽  
Ce Qi ◽  
Yuning Zhao ◽  
Mengyao Lu ◽  
Xinyue Li ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Gestational Diabetes ◽  
Gestational Diabetes Mellitus ◽  
Lactobacillus Reuteri ◽  
Immunoglobulin A ◽  
Mucosal Damage ◽  
Secretory Iga ◽  
Mucosal Barrier ◽  
Secretory Immunoglobulin

Gestational diabetes mellitus (GDM) may be related to intestinal mucosal damage and inflammation-induced dysbiosis of secretory IgA (SIgA) coated microbiota. SIgA coated L. reuteri can reduce the level of inflammation of GDM in vitro.

scholarly journals Faster Short-Chain Fatty Acid Absorption from the Cecum Following Polydextrose Ingestion Increases the Salivary Immunoglobulin A Flow Rate in Rats

Nutrients ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1745 ◽  
Author(s):  
Yuko Yamamoto ◽  
Toshiya Morozumi ◽  
Toru Takahashi ◽  
Juri Saruta ◽  
Masahiro To ◽  
...  
Keyword(s):  
Portal Vein ◽  
Flow Rate ◽  
Immunoglobulin A ◽  
Short Chain Fatty Acids ◽  
Vital Role ◽  
Short Chain ◽  
Upper Respiratory Tract ◽  
Salivary Iga ◽  
Tract Infections ◽  
Salivary Immunoglobulin A

Salivary immunoglobulin A (IgA) plays a vital role in preventing upper respiratory tract infections (URTI). In our previous study, we showed that the intake of carbohydrates increases the intestinal levels of short-chain fatty acids (SCFAs), which in turn increase salivary IgA levels. However, the mechanism underlying this phenomenon has not been fully elucidated. In this study, we investigated in rats the effect of polydextrose (PDX) ingestion on salivary IgA level and SCFA concentration in cecal digesta and the portal vein. Five-week-old rats were fed with a fiber-free diet (control) or with 40 g/kg of PDX for 28 days. Compared to the control, ingestion of PDX led to a higher salivary IgA flow rate (p = 0.0013) and a higher concentration of SCFAs in the portal vein (p = 0.004). These two data were positively correlated (rs = 0.88, p = 0.0002, n = 12). In contrast, the concentration of SCFAs in cecal digesta and cecal digesta viscosity were significantly lower following PDX ingestion, compared to the control (p = 0.008 and 0.05, respectively). These findings suggest that the ingestion of PDX increases the absorption rate of SCFAs in the intestine through PDX-induced fermentation, which is accompanied by an increase in SCFA levels in the blood, and ultimately leads to increased salivary IgA levels.

scholarly journals Short-chain fatty acids: nutritional strategies to modulate intestinal microbiota

2021 ◽  
Vol 11 (5) ◽  
pp. 141-144
Author(s):  
Marcos Porto Arrais de Souza ◽  
Morgana Andrade Freitas ◽  
Carla Braga Campelo de Oliveira ◽  
Lorena Almeida Brito ◽  
Julio Cesar Chaves Nunes Filho ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Gastrointestinal Tract ◽  
Intestinal Microbiota ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Soluble Fiber ◽  
Fatty Acid Production ◽  
Pubmed Database ◽  
Nutritional Strategies ◽  
Chain Fatty Acids

Introduction: The intestinal microbiota has been the subject of research due to its association in physiological and pathological conditions. The production of short chain fatty acids obtained by fermentation of the intestinal microbiota has shown important effects on the gastrointestinal tract, adipose tissue, immune system and nervous system. Objective: This literature review aims to present different nutritional strategies with the potential to modulate the intestinal microbiota by increasing the production of short chain fatty acids. Methods: The research was considered a review work, through a bibliographic survey carried out from the collection of articles in English, published in the PubMed database, in the period from 2013 to 2020. The articles were selected from the descriptors: gut microbiota, soluble fiber, resistent starch, pectin, dietary fiber, short chain fatty acids (SCFA) with the combinations of the Boolean operators “and” and “or”. Studies considered as gray literature were excluded, as well as studies in which the titles were not related to the theme of the proposed research. Results: There are many benefits to consuming foods that may favor the increase of short chain fatty acids. This increase in the gastrointestinal tract is of fundamental importance for the maintenance of intestinal microbiota and prevention of diseases. Some nutritional strategies can be used in clinical therapy, such as increased consumption of fruits, vegetables and whole grains that are plant foods and important sources of fiber. The type of food must be observed, since each one can contain fibers of diverse types. Soluble fiber is the basis for the metabolization of short chain fatty acids and is found in various foods that can be inserted into the food plan, such as: bananas, apples, oats, barley, cooked and cooled potatoes, partially ground seeds, corn, morning cereal, agave, artichoke, asparagus, chicory root, garlic, onion, leeks and wheat. Conclusion: Scientific evidence of the relationship between nutrition, intestinal microbiota and short-chain fatty acid production demonstrates the importance of implementing simple nutritional strategies by health professionals, which can contribute to the modulation of the intestinal microbiota and the development of new perspectives in the development of therapies for prevention and treatment of diseases.

Sign in / Sign up

Export Citation Format

Share Document