ABSTRACT
Objective To observe the effects of short-term withdrawal of thyroxine on lipid level and the protective effect of atorvastatin.Methods The study included 60 rabbits which were randomly divided into treatment experiment group 1 (near-total thyroidectomy + 131 I ablative therapy),treatment experiment group 2 (near-total thyroidectomy + 131I ablative therapy + Atorvastatin intervention) and control group(sham thyroidectomy).Compared the thyroid functions and lipid levels among different groups at the points of before surgery.three weeks after surgery and five weeks after surgery.Results (1) Compared to before surgery,the thyroid function at the points of three weeks and five weeks after surgery were obvious reduced both in treatment group.(2) The leves of TG,TC,LDL-C in EG1 were increased gradually with the extension of time after surgery.Compared with the point of before surgery,the level of HDL-C at the point of five weeks after surgery was significantly declined in EG1.Compared with the point of before surgery,the level of TG at the ponts of three weeks and five weeks after surgery was significantly declined in EG2.Compared with the point of before surgery,the level of LDL-C at the point of three weeks after surgery was significantly declined in EG2.Conclusions (1) Short-term hypothyroidism can increase the levels of TG,TC,LDL-C in plasma.(2) Atorvastatin can maintain the stability of blood lipids during Short-term hypothyroidism.
ABSTRACT
Objective To discuss the effect of abnormal biliary dynamics on the formation of cholelithiasis.Methods A total of 35 cases of gallstone(Gallstone Group),25 cases of gallbladder polypoid lesions(Polypus Group),and 30 normal cases(Control Group) were included in this study.The fasting gallbladder volume was measured with B-ultrasonography,the serum concentration of vasoactive intestinal poly-peptide(VIP) was determined with radioimmunoassay,and the expression of cholecystokinin-A(CCK-A) receptor in the gallbladder mucous membrane was detected with reverse transcriptase polymerase chain reactions(rt-PCR). Results ①The fasting gallbladder volume was significantly greater in the Gallstone Group than in the other two groups(F=3.45,P=0.039).②The gallbladder contraction rate was significantly lower in the Gallstone Group than in the other two groups(F=5.747,P=0.005).③The postprandial increases of VIP of the three groups were not of statistical significance(F=0.768,P=0.47).④Compared with the Polypus Group,the expression of CCK-A receptor in the Gallstone Group was significantly decreased(t?=4.390,P=0.022).Conclusions ① The increase of the fasting gallbladder volume in the Gallstone Group is associated with the formation of gallstones.②In the Gallstone Group,depressed gallbladder contraction results in the formation of gallstones.③The decreased expression of CCK-A receptor leads to depressed gallbladder contraction,which facilitates the formation of gallstones.④Serum VIP is not related to the formation of gallstones.