Abstract：
:The present study was aimed to investigate the metabolomics of sulfur amino acids in Zucker diabetic fatty (ZDF) rats, an obese type 2 diabetic animal model. Plasma levels of total cysteine, homocysteine and methionine, but not glutathione (GSH) were markedly decreased in ZDF rats. Hepatic methionine, homocysteine, cysteine, betaine, taurine, spermidine and spermine were also decreased. There are no significant difference in hepatic S-adenosylmethionine, S-adenosylhomocysteine, GSH, GSH disulfide, hypotaurine and putrescine between control and ZDF rats. Hepatic SAH hydrolase, betaine-homocysteine methyltransferase and methylene tetrahydrofolate reductase were up-regulated while activities of gamma-glutamylcysteine ligase and methionine synthase were decreased. The area under the curve (AUC) of methionine and methionine-d4 was not significantly different in control and ZDF rats treated with a mixture of methionine (60mg/kg) and methionine-d4 (20mg/kg). Moreover, the AUC of the increase in plasma total homocysteine was comparable between two groups, although the homocysteine concentration curve was shifted leftward in ZDF rats, suggesting that the plasma total homocysteine after the methionine loading was rapidly increased and normalized in ZDF rats. These results show that the AUC of plasma homocysteine is not responsive to the up-regulation of hepatic BHMT in ZDF rats. The present study suggests that the decrease in hepatic methionine may be responsible for the decreases in its metabolites, such as homocysteine, cysteine, and taurine in liver and consequently decreased plasma homocysteine levels.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Kwak HC,Kim YM,Oh SJ,Kim SKdoi
10.1016/j.bcp.2015.05.014subject
Has Abstractpub_date
2015-08-01 00:00:00pages
256-66issue
3eissn
0006-2952issn
1873-2968pii
S0006-2952(15)00297-Xjournal_volume
96pub_type
杂志文章abstract：:The discovery and development of medications to treat addiction and notably, cocaine addiction, have been frustrated by both the complexity of the disorder and the lack of target validation in human subjects. The dopamine transporter has historically been a primary target for cocaine abuse medication development, but ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.bcp.2007.08.007
更新日期：2008-01-01 00:00:00
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journal_title：Biochemical pharmacology
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doi：10.1016/0006-2952(84)90417-9
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doi：10.1016/j.bcp.2008.08.026
更新日期：2008-12-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(90)90322-c
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(91)90124-n
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(90)90645-2
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2008.03.006
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(96)00109-8
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pub_type： 杂志文章
doi：10.1016/s0006-2952(02)01065-1
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1016/0006-2952(93)90148-p
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(85)90786-5
更新日期：1985-07-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(87)90364-9
更新日期：1987-02-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2010.04.038
更新日期：2010-08-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2011.03.007
更新日期：2011-06-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
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更新日期：2005-06-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1016/j.bcp.2013.06.030
更新日期：2013-09-15 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：1994-09-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
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更新日期：2020-04-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
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更新日期：1984-02-01 00:00:00
