식이제한이 마우스 신장의 글루타치온 대사과정에 미치는 영향

• 영문명: Effect of Diet Restriction on Renal Glutathione Metabolism in Mice
• 발행기관: 대한약학회
• 저자명: 이소민 배지은 권도영 정영석
• 간행물 정보: 『약학회지』제66권 제6호(2022년), 331~335쪽, 전체 5쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2022.12.30

영문 초록

Various benefits for the maintenance of metabolic homeostasis can be obtained through dietary restriction. Short-term fasting of mice may induce systemic metabolic remodeling, which may have a significant effect on the level of endogenous metabolites. This study was conducted to examine metabolic changes of sulfur-containing substances in the kidneys of fasted mice over 48 h. No change in the concentration of renal methionine was observed over 48 h; however, significant decreases in the concentrations of S-adenosylmethionine and S-adenosylhomocysteine were observed at both 24 and 48 h after fasting. A significant decrease in the concentration of renal cysteine was observed from 24 h, and this was maintained at 48 h. A significant decrease in the concentration of glutathione (GSH) was observed in the kidney at 48 h, whereas increased concentrations of taurine were observed 48 h after fasting. Although significantly increased expression levels of BHMT were observed, markedly decreased expression levels of CβS were observed at 48 h after fasting, indicating activated generation of methionine, but downregulation of cysteine synthesis. The expression level of γ-GCL was not altered by fasting for 48 h; however, a significant increase of cysteine sulfinate decarboxylase mediating the taurine synthesis was observed. Significantly decreased protein expression levels of solute carrier family 7 member 11, which imports extracellular cystine, were observed at 48 h. These results suggest that the renal methionine concentration was maintained during short-term fasting through an increase in the re-methylation of homocysteine. Moreover, a reduction in the concentration of cysteine was the result of an increase in the synthesis of taurine and a decrease in the uptake of extracellular cystine, which may result in a decreased concentration of renal GSH.

목차

서론(Introduction)

방법(Methods)

결과(Results)

고찰(Discussion)

결론(Conclusion)

감사의 말씀(Acknowledgment)

Conflict of Interest

References

키워드

Diet restriction Kidney Methionine Glutathione