AIM: To investigate the effect of cold exposure on the thermoregulatory function in hypothyroid rats. METHODS: Hypothyroid model was established by administration of antithyroid drug propylthiouracil(PTU) in rats. Colonic temperature was measured using digital thermometer. Plasma T_3 and T_4 concentrations were determined by radioimmunoassay. The effect of cold exposure on body temperature was observed after 2 weeks of PTU treatment. RESULTS: Plasma T_3 and T_4 concentrations were reduced markedly 2 weeks after PTU treatment, and colonic temperature was also decreased markedly; Hyperthermic response was not different between PTU group and control group during cold exposure. CONCLUSION: This study suggests that PTU-induced hypothyroid rat possesses a robust thermogenic response to short bouts of cold exposure.

0.05). Compared with the altitude of 1 507 m group, the activity of SOD and GSH-Px significantly decreased in the altitude of 3 850 m and 2 500 m groups, it was contrary in the content of MDA (P

Objective To observe the effect of different concentrations of parathyroid hormone 1-34 on the adipogenic potential of rat bone marrow mesenchymal stem cells (BMSCs).Methods ① Rat bone marrow mesenchymal cells were separated and expanded by adherent culture.The morphology of cells was observed and cell surface markers were examined by flow cytometry.② The multi-lineage differentiation capability of cells was examined by culturing cells under conditions favorable for adipogenic and osteogenic differentiation.③ Taken P3 of BMSCs for test,different concentrations of PTH1-34 (0,10-10,10-9,10-8 mol/L) were used to stimulate BMSCs respectively,14 days later,lipoprotein lipase (LPL) activity were measured by enzyme linked immuno-sorbent assay (ELISA),mRNA expression of alkaline phosphatase (ALP) and PPARγ-2 were measured by realiime polymerase chain reaction (PCR).④ Statistical analysis:data were presented as x±s.All statistical analysis was performed with windows Statistical Praduct and Serice Solutions (SPSS) 13.0.One-way analysis of variance (ANOVA) was applied to determine the difference between groups.Least signisicant difference (LSD) was used to determine the difference between the two randomized groups.Differences were considered significant at a value of P＜0.05.Results The cells expressed CD44,CD29 but without expression of CD45.By culturing in adipogenic medium for 3 weeks and in osteogenic medium for 4 weeks respectively,and then identified by oil red O and Alizarin red,the cells were successfully induced to adipocytes and osteogenesis.Expressions of LPL were 11.20±0.16,7.62±0.48,5.84±0.57,5.32±0.52,mRNA expressions of PPARγ-2 were 2.80±0.05,1.36±0.23,0.94-±0.11,0.78±0.04,ALP activity were 0.191 ±0.016,0.333±0.024,0.549±0.025,0.684±0.021 respectively.Compared with the control group,different concentrations of PTH1-34 groups could decrease mRNA expression of LPL and PPARγ-2.ALP activity were increased(P＜0.05).Conclusion PTH1-34 inhibits BMSCs of adipogenic differentiation and promotes osteogenic differentiation in a dose-dependent manner.

OBJECTIVE: To develop a method of HPLC/MS/MS to determine phenacetin and paracetamol in rat liver microsomal incubation system. METHODS: Samples were separated on XTerra MS C18 column, different ratios of methanol- 0.1% formic acid were used as the gradient eluent, and the flow rate was 0.2mL?min-1. The electrospray ion-quadrupole mass spectrometry and multiple reaction monitor were adopted to detect the concentration of phenacetin and paracetamol. RESULTS: The calibration curves were linear in the ranges of 45～9 000ng?mL-1(r=0.999 8)and 15.2～1 520ng?mL-1(r=0.999 6) for phenacetin and paracetamol respectively; The lowest limits of assay were 9ng?mL-1 and 10ng?mL-1.The average recoveries at three concentrations of phenacetin were (96.2?2.3)%～(98.3?2.4)% and those of paracetamol were (99.6?2.1)%～(100.2?2.6)%; RSD of the intra-day and inter-day were less than 5%. CONCLUSION: The method is rapid, sensitive and suitable for determination of phenacetin and paracetamol in rat liver microsomal incubation system.

1%. During the latent TB screening, agreement between tests was low (Kappa=0.07, P<0.01), but T-SPOT. TB is not affected by BCG vaccination, indicated its better specificity for screening latent TB than that of TST.

Depending on the meaning and function of the liver in traditional Chinese medicine and modern medicine,this paper explores the important role of liver in the pathogenesis of DM (Diabetes Mellitus,DM).Combined with treatment based on syndrome differentiation and specific case report study,this paper has stressed the importance of treating DM from liver and so to set a sound basis for the systemic treatment based on syndrome differentiation from internal organs for DM.

Objective To analyse the DNA heterogeneity of 20 clinical isolates of Acinetobacteria using infrequet-restriction-site PCR (IRS-PCR ).Methods Strain-specific electrophoretic patterns from PCR products by amplifying DNA sequences flanking infrequent restriction of 20 strains of Acinetobacter were compared with the results of genotype with RAPD as well as the results of biotyping.Results Among the 20 bacteria, ten can be recognized as Acinetobacter haemolytius with biotyping, seven as Acinetobacter lwoffi, while the other 3 bacteria can not be recognized. Acinetobacter haemolytius isolates were divided into 5 gene types with IRS-PCR, isolates of Acinetobacter lwoffi were divided into 4 gene types, meanwhile, the last three bactria were divided into 2 gene types. With RAPD technique, Acinetobacter haemolytius, Acinetobacter lwoffi and the other 3 bacteria were divided into 6 gene types, 4 types, and 2 types by prime 1, respectively, the amplifying results of primer 2 divided Acinetobacter haemolytius into 9 gene types, the Acinetobacter lwoffi ,5 types and the other 3 bacteria,2 types. Conclusion IRS-PCR can be used for typing Acinetobacter and is more aceurate than biotyping. It has the same recogniton abili ty as RAPD while is of better stability and repeatability, so this method is capable of clinical application.

AIM To observe the effect of sodium orthovanadate on glucose and maltose absorption and to reveal its mechanism. METHODS ① Normal Wistar rats were divided into 6 groups at random, 0 9% NaCl group, acarbose group(30 mg?kg -1 ) and sodium orthovanadate high dose(16 mg?kg -1 ), middle dose (4 mg?kg -1 ) and low dose (1 mg?kg -1 )groups. The values of blood glucose of all the groups were measured with oxidation enzyme method after administration of glucose and maltose. ② The ? glucosidase was abstracted from the upper small intestine and the inhibitory effect of sodium orthovanadate on ? glucosidase was examined. RESULTS ① Sodium orthovanadate could delay the peak values of plasma glucose induced by glucose, with AUC in these groups lower than that in controls, that is (8 42?0 63) mmol?h -1 ?L -1 ( P

Objective:To investigate the value of serum progranulin (PGRN)in the clinical diagnosis of adult sepsis patients.Methods:One hundred and eighty-seveninfection patients admitted to the intensive care unit(ICU) of Affiliated Dongfeng Hospital, Hubei University of Medicinewere divided into non-sepsis group(94 patients) and sepsis group (93 patients)according to the third international consensus definitions for sepsis and septic shock. Patients in the sepsis group were divided into two subgroups according to the degrees of infection: septic shock group (46 patients) and non-septic shock group (47 patients). The levels of serum PGRN, procalcitonin (PCT), C-reactive protein (CRP), interleukin-6 (IL-6), tumor necrosis factor-α(TNF-α) and lactic acid (Lac) were compared between the two groups and subgroups within 1 h into the ICU, as well as the acute physiology and chronic health evaluation Ⅱ(APACHE Ⅱ) and sequential organ failure assessment (SOFA) scores within 24 h into the ICU. Logistic regression model was used to analyze the relationship between PGRN and sepsis. The receiver operating characteristic (ROC) curve of the subject was drawn. The diagnostic value of PGRN in sepsis was evaluated and compared with PCT, CRP, IL-6, TNF-α and Lac.Results:The levels of PGRN, PCT, CRP, IL-6, TNF-α, Lac and APACHEⅡ, SOFA scores in the sepsis group were higher than those in the non-sepsis group: (129.25 ± 17.81) μg/L vs. (43.17 ± 7.68) μg/L, (5.92 ± 0.82) μg/L vs. (1.34 ± 0.17) μg/L, (64.07 ± 10.51) mg/L vs. (37.18 ± 5.44) mg/L, (111.68 ± 13.17) ng/L vs. (32.41 ± 5.61) ng/L, (86.06 ± 12.19) ng/L vs. (46.44 ± 7.63) ng/L, (2.96 ± 0.45) mmol/L vs. (1.47 ± 0.22) mmol/L, (23.62 ± 4.24) scores vs. (11.74 ± 2.07) scores, (14.84 ± 2.42) scores vs. (1.36 ± 0.23) scores, and the differences were statistically significant ( P<0.05). The levels of PGRN, PCT, CRP, IL-6, TNF-α, Lac in the septic shock group were higher than those in non-septic shock group:(143.29 ± 13.54) μg/L vs. (116.59 ± 10.73) μg/L, (7.64 ± 1.17) μg/L vs. (4.24 ± 0.59) μg/L, (74.49 ± 10.46) mg/L vs. (53.89 ± 8.41) mg/L, (124.48 ± 14.37) ng/L vs.(99.16 ± 13.61) ng/L, (95.91 ± 14.75) ng/L vs. (76.42 ± 11.24) ng/L, (3.52 ± 0.46) mmol/L vs. (2.45 ± 0.39) mmol/L, and the differences were statistically significant ( P<0.05). Logistic regression analysis showed that SODA scores and serum PGRN, PCT, CRP, IL-6, Lac levels were independent risk factors for sepsis ( P<0.05). The ROC curve analysis showed that the area under the curve (AUC) of PGRN was higher than that of CRP, IL-6, TNF-α and Lac for predicting the occurrence of sepsis in infection patients ( P<0.05). The AUC of PGRN was higher than that of CRP, IL-6, TNF-α and Lac for predicting the occurrence of septic shock in infection patients ( P<0.05). Conclusions:The levels of serum PGRN is a good biomarker for the diagnosis of sepsis and could reflect the severity. It has certain clinical value.

Objective To investigate the expression of microRNA 27a (miR-27a) and relationship with drug resistance in human ovarian cancer A2780/Taxol cells.Methods A stem-loop-mediated real-time PCR was used to detect miR-27a expression in A2780 and A2780/Taxol cells.The cells were transfected with the mimics or inhibitors of miR-27a or negative control RNA ( NC) by lipofectamine 2000.The expressions of MDR1 gene,P-glycoprotein (P-gp) and homeodomain-interacting protein kinase 2 (HIPK2) protein levels were measured by real-time PCR and western blot respectively.Methyl thiazolyl tetrazolium (MTT) assay was used to analyze drug sensitivity.Apoptosis analysis was measured by fluorescence activated cell sorter ( FACS).Results (1) miR-27a was an average of 2.2-fold higher expression level in A2780/Taxol cells than that in A2780 cells,with a significant difference between the two groups (P <0.05).(2) A2780/Taxol cells transfection with inhibitors of miR-27a showed that the levels of MDR1 mRNA was decreased by 39%,P-gp protein level[(26 ±5)%]decreased than that in the NC group[(43 ±7)%],HIPK2 protein level[(30 ±6)%]increased than that in the NC group[(19 ±4)%],the 50% inhibitionconcentration (0.5 (μmol/L) was less than that in the NC group (6.8 μmol/L),apoptosis rate[(32.5 ± 3.6) %]was higher than that in the NC group[(5.6 ±2.1) %],and there were significant differences between two groups (all P < 0.05 ).( 3 ) Transfection of A2780 cells with mimics of miR-27a led to increase MDR1 mRNA expression by 121% as compared with one transfection with NC (P<0.05).Conclusion The expression of miR-27a is upregulated in A2780/Taxol cells,which may regulate MDR1 and P-gp expression by targeting HIPK2.