Objective To investigate the role of nerve growth factor (NGF) in the pathogenesis of diabetic neuropathy (DNP) and the correlation of NGF level with,sensory nerve conduction velocity (SNCV) and duration of DNP.MethodsThe 41 patients with DNP,35 diabetics without DNP and 33 healthy controls were enrolled.And the serum level of NGF was measured with ELISA,the SNCV of left medial nerve,ulnar nerve,peroneal nerve and tibial nerve were measured too. Then the correlation analysis was completed. ResultsThe serum level of NGF was significantly lower in DNP patients [(665.18±188.32) ng/L] than in healthy controls [(976.44±159.07)ng/L] and in diabetics without DNP [(943.32±167.33) ng/L,F=9.316,P<0.001].The NGF level of DNP patients was positively correlated with SNCV of left medial nerve (r=0.810,P<0.001 ),left peroneal nerve (r=0.760,P<0.001) and duration of DNP (r=0.542,P<0.001).Conclusions The serum level of NGF is lower in DNP patients than in healthy controls.The decrease of the production of NGF may play a role in the pathogenesis of DNP.

Objective To investigate the influence of ovarian arterial blood flow index on pregnancy outcomes in patients undergoing in vitro fertilization and embryo transfer (IVF-ET).Methods Totally 136 infertile patients undergoing IVF-ET from February 2014 to April 2016 were divided into pregnant group and non-pregnant group.The monitoring through transvaginal B of two groups for chorionic gonadotropin (HCG) day and ovarian artery resistance index (RI),pulsatility index (PI) and umbilical artery diastolic flow velocity height ratio (S/D) on 2nd day of menstruation (M2) was conducted.The difference of blood flow indexes in two groups was analyzed.Results Compared with those in non-pregnant group,RI,PI and S/D in pregnant group were decreased on M2,and the difference was statistically significant (P ＜ 0.05).RI and PI were also decreased significantly on HCG day,and the difference was statistically significant (P ＜ 0.05),but S/D showed no significant changes (P ＞ 0.05).RI and PI decreased significantly on HCG day in two groups (P ＜ 0.05) when compared with those on M2,but in non-pregnant group,the comparison of S/D on HCG day showed no statistical significance (P ＞ 0.05).Conclusions There is close relationship among RI and PI of ovarian artery and ovarian reserve function.RI and PI are effective indexes to predict outcomes in IVF-ET,and provide scientific basis for the preparation and treatment for IVF-ET.

A chiral high-performance liquid chromatography method was developed for the simultaneous determination of ibuprofen enantiomers in dog plasma. It was used to study the pharmacokinetics in the Beagle dog after intravenous administration of racemic-ibuprofen, S-ibuprofen and R-ibuprofen. Ketoprofen was chosen as the internal standard. After a simple precipitation using methanol as the precipitating solvent, both analytes and IS were separated on a Kromasil 100-5CHI-TBB chiral column (250 mm x4.6 mm, 5 μm) with isocratic elution using acetonitrile - 20 mmol x L(-1) phosphate buffer (pH 3.0, containing 5% methanol) (6 : 4) as the mobile phase. The detection wavelength was 220 nm. Liner calibration curves for both of the ibuprofen enantiomers were over the concentration range from 0.5 to 50 μg x mL(-1) with a lower limit of quantification of 0.5 μg x mL(-1), the accuracies were all in standard ranges. The intra- and inter- assay precisions were all below 7%. The recovery rate was 93.1% to 100.4%. The experiments proved that the method was simple, rapid and sensitive. It can be used in the quantitative determination of ibuprofen enantiomers in dog plasma. The method was used to determine the concentration of ibuprofen enantiomers in Beagle dog plasma after a single intravenous administration of racemic-ibuprofen, S-ibuprofen and R-ibuprofen (9 mg x kg(-1)) and the pharmacokinetics parameters were calculated based on the concentration-time curves. The C(max) of S-ibuprofen in Beagle dog plasma after a single intravenous administration of racemic-ibuprofen, S-ibuprofen and R-ibuprofen were 30.8 ± 4.7, 46.1 ± 5.9 and 20.0 ± 2.6 μg x mL(-1), respectively. In terms of the exposure of active ingredient, it revealed a significant difference between the administration of S-ibuprofen and the other two groups. The systematical R- to S- chiral inversion was discussed. Comparing the pharmacokinetic parameters at different doses, chiral inversion were 70.1% ± 36.6% and 76.4% ± 36.2%, respectively, after intravenous administration of racemic- and R-ibuprofen. This study provides a theoretical basis for the safety of ibuprofen formula of injection drug.
Animals ; Chromatography, High Pressure Liquid ; Dogs ; Ibuprofen ; blood ; pharmacokinetics ; Stereoisomerism

Objective To investigate the effect of lamivudine (LAM) on serum interferon (IFN)-γ and interleukin (IL)-4 levels in patients with chronic hepatitis B(CHB). Methods Serum IFN-γ and IL-4 levels were measured with enzyme-linked immunosorbent assay (ELISA) in 66 CHB patients at baseline and 3, 6, 9 and 12 months after LAM treatment respectively. And 20 healthy volunteers served as healthy control. The comparision of pretreatment and post-treatment was done using t test and numberation data were analyzed by non parametric rank sum test. Results In HBeAg positive patients, the serum level of IFN-γ was (21.03±4.44) ng/L in complete response group, which was higher than partial response group [(13.85±3.92) ng/L] and non-response group [(10.63± 3.11) ng/L] (t=7.56,t=11.87, both P<0.01). Take that IFN-γ is 15.66 ng/L as boundry patients with high baseline IFN-γ level showed much higher complete response rate (31.0% vs 8.7%, x2 =8.391, P<0.01) and lower non-response rate (13.8% vs 52.2%,x2=4. 256, P<0.01) than those with low baseline IFN-γ levels. After LAM treatment, the IFN-γ/IL-4 ratios in complete response patients were approximate or even higher than those in healthy group, whereas the IFN-γ/ IL-4 ratios of patients with partial response and non response were lower than those in healthy group. In HBeAg negative patients, the IFN-γ/IL-4 ratios increased slowly but didn't reach the same levels of healthy group. Conclusions It is suggested that LAM treatment can increase IFN-γ release and reduce IL-4 release in CHB patients. The response type to LAM therapy is associated with the recovery of T helper cell (Th) 1/Th2 balance post-treatment and pretreatment IFN-γ levels.

Adenofibroma ; metabolism ; pathology ; Antigens, CD34 ; metabolism ; Child, Preschool ; Diagnosis, Differential ; Female ; Humans ; Kidney Neoplasms ; metabolism ; pathology ; surgery ; Neoplasms, Germ Cell and Embryonal ; metabolism ; pathology ; surgery ; Nephroma, Mesoblastic ; metabolism ; pathology ; Sarcoma, Clear Cell ; metabolism ; pathology ; Stromal Cells ; metabolism ; pathology ; Vimentin ; metabolism

The self-designed experimental teaching method is introduced in detail in this paper,including the preparative work before class,discussion of experimental designing proposal,and accomplishment of specific experiment and so on.The teaching method innovations on pathophysiology experiment are very helpful to cultivate the students' ability to solve practical problem and lay the foundation to cultivate talented medical science personal.

Objective To observe the effect of acupuncture in promoting the lung recovery in chronic obstructive pulmonary disease (COPD), and to discuss its advantage and safety in lung recovery. Method Forty-four patients were randomized into two groups, 22 cases in the treatment group and 19 in the control group finally (with 3 dropouts). In addition to the required aerobic exercises, the treatment group received active acupuncture treatment and the control group received placebo acupuncture treatment, with acupoints from the Spleen and Stomach Meridians and Conception Vessel as the major points, 2-3 sessions a week, for 14 sessions in total. The body mass index (BMI), athletic ability, COPD Assessment Test (CAT), pulmonary function and inflammation indexes [interleukin (IL)-6 and tumor necrosis factor (TNF)-α] were observed before and after the treatment. Result After the treatment, the improvements in the six-minute walking distance, CAT and pulmonary function scores were statistically more significant in the treatment group than those in the control group (P<0.05,P<0.01); the serum content of TNF-α was increased more significantly in the control group than in the treatment group (P<0.05); there was no significant change in BMI in the treatment group, while a significant decrease of BMI was found in the control group (P<0.05). Conclusion Acupuncture plus exercises can boost the lung recovery in remission-stage COPD and reduce the adverse reactions brought by sports fatigue.

Osteogenesis and angiogenesis are two closely correlated processes during bone growth, development, remodelling and repair.Vascular endothelial growth factor (VEGF) is an essential mediator during the process of angiogenesis. Based on an extensive literature search, which was carried out using the PubMed database and the keywords of osteogenesis, VEGF, endochondral ossification and intramembranous ossification, this manuscript reviews the role of VEGF in ossification, with emphasis on its effect in endochondral and intramembranous ossification. Osteogenesis and angiogenesis are closely correlated processes. VEGF acts as an essential mediator during these processes. It not only functions in bone angiogenesis but also in various aspects of bone development.
Animals ; Bone Remodeling ; physiology ; Bone and Bones ; cytology ; physiology ; Calcification, Physiologic ; physiology ; Cartilage ; cytology ; physiology ; Humans ; Neovascularization, Physiologic ; physiology ; Osteoclasts ; physiology ; Osteogenesis ; physiology ; Vascular Endothelial Growth Factor A ; physiology

A new species of genus shewarella Shewanellade decolorations S12, was isolated from activated sludge of a textile-printing waste-water treatment plant. In the anaerobic condition, S12 could conserve energy for growth by using Fe3 + as the terminal electron acceptor. At the optimal condition of pH8, temperature 30℃, ferric citrate 800mg/L, sodium lactate 2g/ L, yeast extract 0. 5g/ L , the cell growth increased with the raise of the amount of the Fe3+ reduction in 8k The effect of different carbon soucres, nitrogen sources, pH values and growth temperatures on the anaerobic Fe3 + reduction of Shewanella decolorations S12 was investigated. LB was favorable for Fe3 + reduction. Glucose and sodium lactate also were favorable for Fe3+ reduction. The cell growth and Fe3 + reduction increased with the raise of the amount of the yeast extract from 0 to 4g/L The amounts of the sodium lactate of 6g/ L and ferric citrate of 800mg/L were suitable for strain S12 growth and Fe3+ reduction. In the optimum initial pH value range of 6 -8 for Fe3+ reduction, strain S12 growth increased with the raise of the pH val- ue. Strain S12 could growth and reduce Fe3+ at the temperature range of 20 -40℃. The best temperature for strain S12 growth and Fe3 + reduction was 301.

BackgroundThe immunotherapy for retinoblastoma(RB) is gradually concerned recent year.To seek relative immune-associated antigen is a basis of immunotherapy.NY-ESO-1 and NY-SAR-35 are two kinds of genes of cancer testis antigen( CTA ).To understand their expressions in RB tissue can offer index for relative study.ObjectiveThis study was to investigate the expressions of two CTA NY-ESO-1 and NY-SAR-35 in RB and explore the possibility of them as potentially promising targets for antigen-specific immunotherapy of RB.Methods The samples were obtained from 15 RB eyes,12 non-tumor retinopathy eyes and 22 normal eyes with other benign eye diseases.Reverse transcription polymerase chain reaction(RT-PCR) was used to detect the expressions of NY-ESO-1 mRNA and NY-SAR-35 mRNA in the samples.Genes of positive PCR results were sequenced randomly.The relevance of the expression of the two cancer-testis antigen genes with the clinical characteristics such as tumor stage,tumor size and clinical stage were analyzed.This study was approved by Ethic Committee of Guangxi Medical University.Written informed consent was obtained from each patient before operation. Results NY-ESO-1 mRNA was positively expressed in 6 RB samples and NY-SAR-35 mRNA was expressed in 9 RB samples.In the non-tumor retinopathy samples and normal eye tissues,NY-ESO-1 mRNA and NY-SAR-35 mRNA were absent.No significant relevances were found between the expressions of the NY-ESO-1 mRNA and NY-SAR-35 mRNA with clinical characteristics such as age ( P =0.426,0.822 ),gender ( P =0.180,0.464 ),pathological classification ( P =0.744,0.582 ),tumor size ( P =0.760,0.790),and clinical stage ( P =0.868,0.707 ).Conclusions NY-ESO-1 and NY-SAR-35 have high expressing frequencies in RB tissue and their expressions in RB have specificity.These results offer a clue for the identification of targets antigen of RB.