Determination and Comparison of Short-Chain Fatty Acids in Serum and Colon Content Samples: Alzheimer's Disease Rat as a Case Study

• Published in: Molecules (Basel, Switzerland) Vol. 25; no. 23; p. 5739
• Main Authors: Guo, Lin-Xiu, Tong, Yue, Wang, Jue, Yin, Guo, Huang, Hou-Shuang, Zeng, Long, Wang, Ping, Li, Jun-Peng, Bi, Kai-Shun, Wang, Tie-Jie
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 04.12.2020; MDPI
• Subjects: Acetic acid; Acetonitrile; Alzheimer Disease - blood; Alzheimer Disease - drug therapy; Alzheimer Disease - metabolism; Alzheimer's disease; Animals; Biological properties; Biological samples; Brain; Butyrates - metabolism; Cognitive ability; Colon; Colon - drug effects; Colon - metabolism; colon content; determination; Disease; Drug dosages; Epithelium; Experiments; Fatty acids; Fatty Acids, Volatile - blood; Fatty Acids, Volatile - metabolism; Feces; Fermentation; Humans; Inflammation; Intestinal Mucosa - drug effects; Intestinal Mucosa - metabolism; LC-MS/MS; Male; Memory; Microbiota; Microorganisms; Pathogenesis; Peptides; Plant Extracts - pharmacology; Proteins; Rats; Rats, Wistar; Rodents; Schisandra - chemistry; serum; Serum - metabolism; short-chain fatty acids; Space exploration; LC-MS/MS; colon content; determination; Alzheimer’s disease; serum; short-chain fatty acids
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules25235739

Short-chain fatty acids (SCFAs) are the main microbial fermentation products from dietary fibers in the colon, and it has been speculated that they play a key role in keeping healthy in the whole-body. However, differences in SCFAs concentration in the serum and colon samples had attracted little attention. In this study, we have optimized the extract and analysis methods for the determination of ten SCFAs in both serum and colon content samples. Methanol and acetonitrile were chosen for extraction of SCFAs from serum and colon content samples, respectively. Biological samples were collected from Alzheimer's disease rats treated by extract of (Turcz.) Baill (SC-extract) were taken as research objects. The results showed that, the relative peak intensities of SCFAs in the colon content from all groups were quite similar, and the trend was identical in the serum samples. Compared with the values in humans, the ratio of ten SCFAs in rat's colon was similar, while the percent of acetate in rat's serum was significantly higher. For therapy of Alzheimer's disease (AD), SC-extract decreased the concentration of butyrate, 3-Methyvalerate, and caproate in the serum samples towards the trend of normal rats. This study may help our understanding of how SCFAs are transported across colonic epithelium in healthy and diseased organisms.