[Effects of bushen tongmai recipe on insulin signaling in insulin resistant rats].
Zhongguo Zhong Xi Yi Jie He Za Zhi
; 23(9): 684-7, 2003 Sep.
Article
en Zh
| MEDLINE
| ID: mdl-14571618
ABSTRACT
OBJECTIVE:
To investigate the effect of Bushen Tongmai recipe (BSTMR) on the tyrosine phosphorylation of insulin receptor (InsR) and insulin receptor substrate-1 (IRS-1) after insulin stimulation in muscle and fat tissues of insulin resistant (IR) rats induced by high-fat forage.METHODS:
Male Wistar rats were randomly divided into normal group (normal forage), model group (high fat forage, in which 61% calories were supplied by fat) and treated group (same forage as model group and treated with BSTMR). All animals were fed for 8 weeks, fasting blood glucose (FBG), blood glucose (BG) levels 1- and 2-hrs after glucose loading were determined routinely, serum fasting insulin (Ins) was determined with radioimmunoassay (RIA) and tyrosine phosphorylation level of InsR and IRS-1 in fatty and muscular tissues was measured by immunoprecipitation and Western blot.RESULTS:
Compared with the model group, FBG in the treated group changed insignificantly, but level of Fins decreased markedly (P < 0.01), so the insulin sensitivity index was significantly elevated in the treated group (P < 0.01), levels of BG 1- and 2-hrs after glucose loading in the treated group were greatly improved in comparison with those in the model group (P < 0.05 and P < 0.01 respectively). Meanwhile, the density of electrophoresis bands of tyrosine phosphorylated InsR and IRS-1 proteins in muscular and fatty tissues in the treated group increased obviously.CONCLUSION:
BSTMR could attenuate the insulin resistance in rats, its pharmaceutical mechanisms might be closely related with the elevation of the tyrosine phosphorylation levels of InsR and IRS-1 in muscular and fatty tissues after insulin stimulation, and improvement of insulin signal transduction in target tissues.
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Bases de datos:
MEDLINE
Asunto principal:
Resistencia a la Insulina
/
Medicamentos Herbarios Chinos
/
Transducción de Señal
/
Insulina
Límite:
Animals
Idioma:
Zh
Revista:
Zhongguo Zhong Xi Yi Jie He Za Zhi
Asunto de la revista:
TERAPIAS COMPLEMENTARES
Año:
2003
Tipo del documento:
Article