This study was aimed to compare the efficacy of gastric banding (GB), Roux en-Y gastric bypass (RYGBP) and biliopancreatic diversion (BPD) in the treatment of rats with type 2 diabetes mellitus (T2DM). Ani-mal models of T2DM were induced by streptozotocin (STZ) injection and high-sugar-fat diets. A total of 70 T2DM rats were randomly allocated into the GB group (G group, n = 20), RYGBP group (R group, n = 20), BPD group ( B group , n = 20 ) , and the sham operation group ( S group , n = 10 ) . The fasting blood glucose ( BG ) , triglyceride ( TG ) , total cholesterol ( TC ) and insulin ( INS ) content were determined before and 1 , 2 , 3 , 4 , 8 , 16 weeks after operation. The insulin sensitivity index (ISI) was calculated. The mortality and complications were ob-served in each group. The results showed that the fasting weight of the GB group, RYGBP group and BPD group were (324.4 ± 22.5) g, (338.9 ± 17.5) g, (333.3 ± 28.4) g, respectively. The BG content was (12.44 ± 1.29) mmol/L, (9.70 ± 0.81) mmol/L, (11.93 ± 2.39) mmol/L, respectively. The TC content was (2.32 ± 0.45) mmol/L, (2.22 ± 0.79) mmol/L, (2.13 ± 0.31) mmol/L, respectively. The TG content was (1.38 ± 0.32) mmol/L, (1.16± 0.41) mmol/L, (1.23 ± 0.35) mmol/L, respectively. The ISI were (-6.38 ± 0.29), (-6.67 ± 0.24), (-6.65 ±0.23), respectively. And the INS content of the RYGBP group were (69.43 ± 18.73) mU/L. There were signifi-cant differences between before and after operation on the 16th week ( P < 0 . 05 , P < 0 . 01 ) . The mortality rate was 5% in the GB group, 20% in the RYGBP group, and 35% in the BPD group. It was concluded that the GB, RYGBP and BPD are effective in reducing blood glucose and blood lipids in the treatment of rat with T2DM. The treatment effect is obvious in the improvement of insulin resistance ( IR ) .

OBJECTIVE:To investigate improvement effect of external administration of water extract from Eriocarpous Glochidion on chronic dermatitis-eczema model mice, and to provide reference for developing new dermatological drug. METHODS:A total of 60 mice were randomly divided into blank group (distilled water), model group (distilled water), compound triamcinolone acetonide acetate group (positive control group, original liquid) , high-concentration, medium-concentration and low-concentration groups of water extract from Eriocarpous Glochidion(2.0,1.0,0.5 g/mL,calculated by crude drug),10 mice in each group. Except for blank group,other groups were given 2,4-dinitrochlorobenzene to induce chronic dermatitis-eczema model. Since the third day of the experiment,two sides of right ears of the mice were given relevant medicine twice at 7:00 and 15:00,15 μL each time,for consecutive 12 d. In the tenth,thirteenth,sixteenth day of the experiment,the difference of thickness of right ears of the mice was calculated(the difference value before experiment),the times of scratching in ear of mice were recorded within 30 min. In sixteenth day of the experiment,ear swelling degree of mice was determined,and thymus index and spleen index in mice were calculated. Optical microscope was used to observe the pathological changes of ear tissues of mice. RESULTS:Compared with blank group,the difference of thickness of right ears,ear swelling degree,spleen index and scratching times were increased significantly in model group(P<0.05 or P<0.01). The epidermis of the ear tissue was thickened,the cell proliferation was obvious,and cavernous edema was found in the epidermis. Compared with model group,other indexes in were decreased significantly,except that the difference value of thickness of right ears in sixteenth day of the experiment,scratching times in ninth and fifteenth day of the experiment were decreased slightly in low-concentration group of water extract from Eriocarpous Glochidion and the thymus index and spleen index in medium-concentration, low-concentration groups of water extract from Eriocarpous Glochidion (P<0.05 or P<0.01). The pathological changes of ear tissue were improved in administration groups to certain extent. CONCLUSIONS:External administration of water extract of Eriocarpous Glochidion has good improvement effect against chronic dermatitis-eczema in mice, which is worthy of further development and investigation.