Abstract
The in vivo effects of N-acetyl cysteine (NAC), S-allyl cysteine, S-ethy cysteine (SEC), S-methyl cysteine (SMC), and S-propyl cysteine (SPC) against hyperlipidemia development and oxidation stress in Balb/cA mice consuming a high saturated fat diet were examined. The influence of these agents on plasma levels of glucose, insulin, uric acid, TG, cholesterol, and the activity of three lipogenic enzymes—glucose-6-phosphate dehydrogenase, malic enzyme, and FA synthase—was determined. All mice consumed the coconut oil-basd, high saturated fat diet, water, and cysteine or one of the five cysteine-containing compounds for 4 wk. The diet with 18% saturated fat significantly elevated the activity of three lipogenic enzymes and significantly increased TG and cholesterol biosynthesis in plasma and liver (P<0.05). When compared with the water and cysteine groups, the treatments from five cysteine-containing agents significantly reduced high saturated fat diet-increased malic enzyme and FA synthase activities, and significantly lowered TG levels in plasma and liver (P<0.05); however, only NAC, SAC, and SMC treatments significantly reduced cholesterol levels in plasma and liver (P<0.05). The five cysteine-containing agents significantly restored high saturated fat diet-decreased glutathione peroxidase (GPX) activity in liver (P<0.05); however, only SMC and SPC significantly restored GPX activity in heart and kidney (P<0.05). These agents also significantly improved high saturated fat diet-related hyperglycemia, hyperuricemia, and oxidation stress (P<0.05). These data support the hypothesis that these compounds are potential multiply-protective agents for hyperlipidemia prevention or therapy.
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Abbreviations
- ALT:
-
alanine aminotransferase
- AST:
-
aspartate aminotransferase
- FAS:
-
fatty acid synthase
- G6PDH:
-
glucose-6-phosphate dehydrogenase
- GPX:
-
glutathione peroxidase
- MDA:
-
malondialdehyde
- NAC:
-
N-acetyl cysteine
- RIA:
-
radioimmunoassay
- SAC:
-
S-allyl cysteine
- SEC:
-
S-ethyl cysteine
- SMC:
-
S-methyl cysteine
- SPC:
-
S-propyl cysteine
- TBA:
-
thiobarbituric acid
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Lin, Cc., Yin, Mc., Hsu, Cc. et al. Effect of five cysteine-containing compounds on three lipogenic enzymes in Balb/cA mice consuming a high saturated fat diet. Lipids 39, 843–848 (2004). https://doi.org/10.1007/s11745-004-1305-4
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DOI: https://doi.org/10.1007/s11745-004-1305-4