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Journal of Chinese Integrative Medicine ›› 2006, Vol. 4 ›› Issue (6): 593-595.doi: 10.3736/jcim20060610

• Original Experimental Research • Previous Articles     Next Articles

Effects of Pollen Typhae total flavone on glucose and lipid metabolism in 3T3-L1 adipocytes

Yan-ming He,Wen-jian Wang,Wei-hua Chen,Jian Ying,Chun-yan He,Yu-yin Ma,Yi Liu,You-shen Li   

  1. Institute of Chinese Integrative Medicine, Fudan University, Shanghai 200040, China
  • Online:2006-11-30 Published:2006-11-15

Objective

To observe the effects of Pollen Typhae total flavone (PTF) on glucose and lipid metabolism in 3T3-L1 adipocytes.

Methods

The content of glucose which disappeared from the culture medium after incubation with drugs for 24 hours was determined as glucose consumption of the cells. The activity of cells was detected by XTT method. The transport of glucose was observed by 3H-glucose uptake method. The efflux of free fatty acid (FFA) from adipocytes was observed by the concentration of FFA in the culture medium.

Results

The glucose concentration in culture medium was significantly decreased with a concentration-dependent effect, when PTF concentrations were from 0.025 g/L to 0.4 g/L. The toxic effect on cells appeared while PTF concentration was 0.4 g/L, and the MTT value decreased. PTF also significantly increased glucose transportation in the 3T3-L1 adipocytes as rosiglitazone (ROS) did. At the same time, FFA concentration in culture medium was significantly decreased as compared to the normal control group, while ROS-treated group did not show any difference.

Conclusion

PTF can increase insulin sensitivity by increasing glucose transportation and consumption in the 3T3-L1 adipocytes as well as decreasing the FFA efflux from the cells.

Key words: Pollen Typhae, Flavone, Glucose, Free fatty acid

CLC Number: 

  • R285

Table 1

Dose-effect of PTF on glucose consumption in 3T3-L1 adipocytes (ヌ±S, mmol/L)"

Group n Glucose consumption
Normal control 8 3.06±0.11
Ros-treated (5 μmol/L) 8 9.60±0.42**
PTF-treated
0.025 g/L 8 3.12±0.26
0.05 g/L 8 3.54±0.40**
0.1 g/L 8 4.58±0.42**
0.2 g/L 8 5.08±0.26**
0.4 g/L 8 5.54±0.83**

Table 2

Effect of PTF on activity of 3T3-L1 adipocytes"

Group n XTT OD value
(x±s)
XTT rate
Normal control 8 2.60±0.14 1.00
Ros-treated (5 μmol/L) 8 2.68±0.09 1.03
PTF-treated
0.025 g/L 8 2.66±0.08 1.02
0.05 g/L 8 2.63±0.07 1.01
0.1 g/L 8 2.79±0.06 1.07
0.2 g/L 8 2.73±0.04 1.05
0.4 g/L 8 1.77±0.23** 0.68

Figure 1

Effect of PTF on glucose uptake in 3T3-L1 adipocytes"

Figure 2

Effect of PTF on FFA efflux in 3T3-L1 adipocytes *P<0.05, vs normal control group (n=6)"

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