Changes in one-carbon metabolism after duodenal-jejunal bypass surgery

American Journal of Physiology. Endocrinology and Metabolism
Jeeyoun JungGeum-Sook Hwang

Abstract

Bariatric surgery alleviates obesity and ameliorates glucose tolerance. Using metabolomic and proteomic profiles, we evaluated metabolic changes in serum and liver tissue after duodenal-jejunal bypass (DJB) surgery in rats fed a normal chow diet. We found that the levels of vitamin B12 in the sera of DJB rates were decreased. In the liver of DJB rats, betaine-homocysteine S-methyltransferase levels were decreased, whereas serine, cystathionine, cysteine, glutathione, cystathionine β-synthase, glutathione S-transferase, and aldehyde dehydrogenase levels were increased. These results suggested that DJB surgery enhanced trans-sulfuration and its consecutive reactions such as detoxification and the scavenging activities of reactive oxygen species. In addition, DJB rats showed higher levels of purine metabolites such as ATP, ADP, AMP, and inosine monophosphate. Decreased guanine deaminase, as well as lower levels of hypoxanthine, indicated that DJB surgery limited the purine degradation process. In particular, the AMP/ATP ratio and phosphorylation of AMP-activated protein kinase increased after DJB surgery, which led to enhanced energy production and increased catabolic pathway activity, such as fatty acid oxidation and glucose tran...Continue Reading

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Citations

May 2, 2018·Journal of Diabetes Research·Paulina SamczukAdam Kretowski
Mar 24, 2021·Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery·Mikyung KimEunyoung Ha

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