XU Jing,LIU Xi-ming,ZHU Xiao-yun,et al.Effect of Daizongfang on Insulin Resistance of 3T3-L1 Adipocytes Induced by Different Methods[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(17):1-8.
XU Jing,LIU Xi-ming,ZHU Xiao-yun,et al.Effect of Daizongfang on Insulin Resistance of 3T3-L1 Adipocytes Induced by Different Methods[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(17):1-8. DOI: 10.13422/j.cnki.syfjx.20211602.
Effect of Daizongfang on Insulin Resistance of 3T3-L1 Adipocytes Induced by Different Methods
To investigate the effects of Daizongfang (DZF) on insulin resistance (IR) of adipocytes induced by different methods.
Method
2
The cocktail induction method was adopted to induce the differentiation and maturity of 3T3-L1 preadipocytes. An IR model in mature adipocytes was established by the induction of palmitic acid (PA), high-concentration glucose (HG), and dexamethasone (DEX). DZF extracts at different concentrations (2.0, 0.5, 0.1 g·L
-1
) intervened for 24 hours. A model group, a rosiglitazone (RSG) group, and a blank control group were set up at the same time. The glucose concentration in the culture supernatant was measured by the glucose oxidase-peroxidase (GOD-POD) method. Glucose consumptions under basic conditions (G
Basic
) and insulin stimulation (G
Ins
) were calculated to evaluate the insulin sensitivity index (ISI). The mRNA expression of glucose transporter 4 (GLUT4) was detected by the real-time polymerase chain reaction (PCR).
Result
2
Compared with the model group, the DZF (2.0 g·L
-1
) showed increased G
Basic
, G
Ins
, and ISI in three IR models (
P
<
0.05,
P
<
0.01). In addition, for the PA-induced IR model, G
Basic
and G
Ins
in the DZF (0.5 g·L
-1
) group were elevated (
P
<
0.01), and G
Basic
, G
Ins
, and ISI in the RSG group increased (
P
<
0.05,
P
<
0.01). For the HG-induced IR model, G
Ins
and ISI increased in the DZF (0.5 g·L
-1
) group (
P
<
0.05), and G
Basic
, G
Ins
, and ISI were elevated in the RSG group (
P
<
0.01). For the DEX-induced IR model, G
Ins
and ISI increased in the RSG group (
P
<
0.01). In the three models, there were differences among groups with different doses. G
Basic
, G
Ins
, and ISI in the high-dose DZF group increased in varying degrees compared with those in the medium- and low-dose DZF groups (
P
<
0.05). In the three models, the DZF (2.0 g·L
-1
) group and the RSG group both increased GLUT4 mRNA expression (
P
<
0.05).
Conclusion
2
DZF can reduce IR of adipocytes induced by HG, DEX, or PA in a dose-dependent manner and increase glucose uptake in an insulin-independent manner, which may be related to the increase in GLUT4 expression.
关键词
Keywords
references
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