The influence of sodium selenite on the replication of Coxsackie B5 virus in monkey kidney cells was studied. When the host cells were cultured in a medium containing 0.05 or 0.5 ug/ml sodium selenite and reproduced continually to 3-10 generations, the titer of Coxsackie B5 virus in cell suspensions was markedly reduced and accompanied with the obvious increase of the surviving rate of the host cells (p

The effect of selenium on the synthesis of nucleic acids in human am-nion cells and monkey kidey cells was studied by the techniques of cell culture and radioisotope assay. The cells were cultured in a medium containing varied dosages of sodium selenite for 24 hours at 37℃ in a CO2 incubator (5% CO2), then 3H-labeled precursors of DNA and RNA were added. The synthetic activity of DNA and RNA was determined by assaying the incorporation amount of radioisotope. The result suggested that selenium can promote intracellular DNA and RNA synthesis and may be essential to cell growth.

Objective To investigate the expression and clinical significance of the estrogen receptor beta isoforms and survivin in thyroid tumors. Methods The pathological data of 125 patients with thyroid tumors were, collected from june 2003 to june 2007 in our institution, including thyroid carcinoma (86 cases), thyroid follicular adenoma (39 cases) and normal thyroid tissue (10cases). SP immunohistochemistry was used to measure the expressions of ERβ and survivin in the thyroid tumors. Results ERβ not only was detected in the thyroid epithelial cell plasma and nuclear, but also in the stroma. The positive rate of ERβ in cases with thyroid carcinoma, adenoma and normal thyroid tissue were 83.72 %, 51.28 % and 20.00 % respectively. There was significant difference between carcinoma and the adenoma or normal thyroid tissue (P<0.05). The positive rate of survivin in cases with carcinoma, adenoma and normal thyroid tissue were 59.30 %, 17.95 % and 0 respectively. There was significant difference between carcinoma and the adenoma or normal thyroid tissue (P<0.05). The expressions of ERβ and survivin correlated with TNM staging and lymph node metastasis of thyroid carcinoma (P<0.05). Conclusion ERβ may play a role in accelerating proliferation in the occurrence of the thyroid carcinoma. The expressions of ERβ and survivin are related to invasion and metastasis of thyroid carcinoma.

OBJECTIVE:To investigate the characteristics and regularity of moxifloxacin-induced adverse drug reaction(ADR) and provide reference for the rational clinical use of drugs. METHODS:Retrieved from CNKI (2005-2014) about the moxifloxa-cin-induced ADR,3 445 cases and the related ADR information were statistically analyzed. RESULTS:Moxifloxacin-induced ADR had a certain relationship with gender,and the male had a high incidence,especially the elderly patients. ADR could appear within 10 min;the clinic features were allergic reaction,the nervous system and digestive system at most. CONCLUSIONS:Great impor-tance should be attached to ADR monitoring and rational use of drug to reduce or avoid the occurrences of moxifloxacin-induced ADR.

Objective To investigate the clinical characteristics of the results of coronary artery CT angiography and coronary artery angiography in 36 patients with probable positive results of treadmill exercise test(TET).Methods Thirty-six patients due to chest pain received 1ET and coronary artery CT angiography and coronary artery angiography in 2 weeks after admission.The coronary plaques were categorized as noncalcified and calcified plaque on CTA images.Results In 36 patients with probable positive results of TET.23 patients were confirmed as coronary artery disease by coronary artery angiography,and the other 13patients had normal coronary artery.Of 23 coronary artery disease patients,9 patients were presented as onevessel disease,5 patients were presented as two-vessel disease,and 9 patients were presented as three-vessel disease,29 non-calcified plaques and 23 calcified plaques were demeted On CTA.Conclusion TET was useful in confirming the diagnosis of coronary artery disease.The characteristics of the coronary artery plaque is correlated with probable positive results of TET.

OBJECTIVE: To compare the hepatotoxicity which induced by rifamycin sodium and isoniazid by alone or combination in mice. METHODS: Forty mice were divided randomly into 4 groups: the sodium chloride group, the rifamycin sodium group, the isoniazid group and the drug - combination group. The drugs were administered to mice by i. p. or i. g. once daily for 8 days. Each mouse was killed by ophthalmectomy. The blood was collected and the liver was excised immediately. The activity of serum ALT and AST was measured and the liver index in mice was calculated. Light microscope was used to observe the histopathological changes of the hepatic cells. RESULTS: The liver index and the activity of serum ALT and AST increased in all groups expect the sodium chloride group( P

AIM: To explore the expressive role of lipoprotein-associated phospholipase A_2, high sensitive C-reactive protein and matrix metalloproteinase-9 in vulnerable atherosclerotic plaques in a rabbit model. METHODS: Forty eight New Zealand white male rabbits were randomly divided into 4 groups (12 rabbits each): control group, stable plaque group, p53 group, and p53+drug group. Rabbits in control group were fed with a regular diet and underwent sham operation. Rabbits in stable plaque group, p53 group and p53+drug group underwent balloon induced arterial wall injury and then were fed on a diet with 1% cholesterol. The animals were all fed for 3 months, then the rabbits in p53 group and p53+drug group underwent Ad5-CMV p53 transfection at 10th week. Before killed, the animals in p53+drug group underwent pharmacological triggering with Russell's viper venom (RVV) and histamine to induce the rupture of the atherosclerotic plaques. At the 1st day and before sacrifice, the serum was collected for measuring Lp-PLA_2, hs-CRP, MMP-9, HDL, LDL and VLDL. The expressions of Lp-PLA_2, hs-CRP and MMP-9 in tissues were determined by the methods of hybridization and immunohistochemistry. RESULTS: At the end of 12th week, the serum and tissue levels of Lp-PLA_2 and MMP-9 in stable plaque group, p53 group and p53+drug group were significant different from those in control group and in each group at the first day (P<0.05). The serum levels of Lp-PLA_2 and hs-CRP in p53 group and p53+drug group were significantly higher than those in control group and stable group (P<0.05). The serum levels of Lp-PLA_2, hs-CRP and MMP-9 were all significantly different between p53 group and p53+drug group (P<0.05). At the end of 12th week, pathological results showed that 4 groups were normal artery, stable plaque, vulnerable plaque and rupture plaque, respectively. The fabric cap was thicker in plaque groups than that in normal group (P<0.05). The rupture and formation of thrombus were more significant in p53+drug group than those in p53 group. The serum level of Lp-PLA_2 had negative interrelated relationship with fabric cap in plaque groups (r=-0.710, P<0.01), and hs-CRP, MMP-9 had no interrelated relationships with fabric cap in plaque groups. CONCLUSION: Base on the successful establishment of the atherosclerotic plaque animal model, serum Lp-PLA_2 shows better interrelated relationships to plaques stability. Combination with hs-CRP and MMP-9, we can exactly evaluate the nature of plaques.

OBJECTIVETo explore the effects of angiotensin-(1-7) on the learning and memory abilities and the expressions of glial fibrillary acidic protein (GFAP) and glial cell line-derived neurotrophic factor (GDNF) in the hippocampus of diabetic rats.

METHODSForty male SD rats were randomly assigned into 4 groups, namely the control group, diabetic group, Ang(1-7)-treated diabetic group (DM1 group), and Ang-(1-7)- and Mas receptor antagonist A779-treated diabetic group (DM2 group). Diabetic rat models were established by a single intraperitoneal injection of streptozotocin (60 mg/kg). The cognitive function of the rats was assessed with Morris water maze (MWM) test. The expressions of GDNF in the hippocampus were examined by RT-PCR and Western blot. Nissl staining was performed to evaluate the morphological changes in rat hippocampus. The expressions of glial fibrillary acidic protein (GFAP, a key indicator of astrocytic reactivity) and caspase-3 were measured by immunohistochemistry.

RESULTSCompared with the control group, the diabetic rats exhibited significantly impaired learning and memory abilities (P<0.05) with lowered expression of GDNF and increased caspase-3 expression in the hippocampus (P<0.05) and significant hippocampal neuronal and astrocyte injuries (P<0.05). Treatment with Ang(1-7) obviously improved the learning and memory abilities of the diabetic rats (P<0.05), increased GDNF and GFAP expressions (P<0.05), lowered caspase-3 expression (P<0.05), and increased the number of surviving neurons in the hippocampus (P<0.05). Such effects of Ang(1-7) effect was blocked by treatment with A779 of the diabetic rats.

CONCLUSIONAng(1-7) can alleviate cognitive dysfunction in diabetic rats possibly by up-regulating the expressions of GFAP and GDNF and promoting neuron survival in the hippocampus.

Angiotensin I ; pharmacology ; Animals ; Astrocytes ; Caspase 3 ; metabolism ; Cognition ; Cognition Disorders ; Diabetes Mellitus, Experimental ; physiopathology ; Glial Cell Line-Derived Neurotrophic Factor ; metabolism ; Glial Fibrillary Acidic Protein ; metabolism ; Hippocampus ; cytology ; metabolism ; Male ; Memory ; Neurons ; Peptide Fragments ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Streptozocin

Objective To explore the effects of angiotensin-(1-7) on the learning and memory abilities and the expressions of glial fibrillary acidic protein (GFAP) and glial cell line-derived neurotrophic factor (GDNF) in the hippocampus of diabetic rats. Methods Forty male SD rats were randomly assigned into 4 groups, namely the control group, diabetic group, Ang(1-7)-treated diabetic group (DM1 group), and Ang-(1-7)-and Mas receptor antagonist A779-treated diabetic group (DM2 group). Diabetic rat models were established by a single intraperitoneal injection of streptozotocin (60 mg/kg). The cognitive function of the rats was assessed with Morris water maze (MWM) test. The expressions of GDNF in the hippocampus were examined by RT-PCR and Western blot. Nissl staining was performed to evaluate the morphological changes in rat hippocampus. The expressions of glial fibrillary acidic protein (GFAP, a key indicator of astrocytic reactivity) and caspase-3 were measured by immunohistochemistry. Results Compared with the control group, the diabetic rats exhibited significantly impaired learning and memory abilities (P<0.05) with lowered expression of GDNF and increased caspase-3 expression in the hippocampus (P<0.05) and significant hippocampal neuronal and astrocyte injuries (P<0.05). Treatment with Ang(1-7) obviously improved the learning and memory abilities of the diabetic rats (P<0.05), increased GDNF and GFAP expressions (P<0.05), lowered caspase-3 expression (P<0.05), and increased the number of surviving neurons in the hippocampus (P<0.05). Such effects of Ang(1-7) effect was blocked by treatment with A779 of the diabetic rats. Conclusion Ang(1-7) can alleviate cognitive dysfunction in diabetic rats possibly by up- regulating the expressions of GFAP and GDNF and promoting neuron survival in the hippocampus.

Objective To explore the effects of angiotensin-(1-7) on the learning and memory abilities and the expressions of glial fibrillary acidic protein (GFAP) and glial cell line-derived neurotrophic factor (GDNF) in the hippocampus of diabetic rats. Methods Forty male SD rats were randomly assigned into 4 groups, namely the control group, diabetic group, Ang(1-7)-treated diabetic group (DM1 group), and Ang-(1-7)-and Mas receptor antagonist A779-treated diabetic group (DM2 group). Diabetic rat models were established by a single intraperitoneal injection of streptozotocin (60 mg/kg). The cognitive function of the rats was assessed with Morris water maze (MWM) test. The expressions of GDNF in the hippocampus were examined by RT-PCR and Western blot. Nissl staining was performed to evaluate the morphological changes in rat hippocampus. The expressions of glial fibrillary acidic protein (GFAP, a key indicator of astrocytic reactivity) and caspase-3 were measured by immunohistochemistry. Results Compared with the control group, the diabetic rats exhibited significantly impaired learning and memory abilities (P<0.05) with lowered expression of GDNF and increased caspase-3 expression in the hippocampus (P<0.05) and significant hippocampal neuronal and astrocyte injuries (P<0.05). Treatment with Ang(1-7) obviously improved the learning and memory abilities of the diabetic rats (P<0.05), increased GDNF and GFAP expressions (P<0.05), lowered caspase-3 expression (P<0.05), and increased the number of surviving neurons in the hippocampus (P<0.05). Such effects of Ang(1-7) effect was blocked by treatment with A779 of the diabetic rats. Conclusion Ang(1-7) can alleviate cognitive dysfunction in diabetic rats possibly by up- regulating the expressions of GFAP and GDNF and promoting neuron survival in the hippocampus.