Acute Coronary Syndrome ; blood ; Aged ; Cell Membrane ; metabolism ; Female ; Humans ; Male ; Middle Aged ; Thromboplastin ; metabolism

Objective To investigate clinical characteristics of refractory systemic juvenile idiopathic arthritis(JIA)and the efficiency of glucocorticoid in therapy on this kind of disease.Methods Thirty-nine children with systemic JIA were divided into low dose group 0.5-1.0 mg/(kg?d)and high dose group 1.0-1.5 mg/(kg?d).And the efficiency was observed by change of active index after 10 and 20 days.Results The effective power was 58.8% and 72.7% after 10 days,respectively.After 20 days,the power was 76.5% and 90.9%,respectively.The power in high dose group was significantly higher than that in low dose group.It had no difference in statistical analysis for efficiency of 2 kind of glucocorticoid dosage to control fever,but it had obvious difference to control arthralgia,arthrocele,erythrocyte sedimentation rate(ESR),C-reactive protein(CRP).Conclusion Glucocorticoid therapy is very effective to control the activity of disease in patients with systemic JIA.

Objective To observe the therapeutic effects of the co-administration of γ-aminobutyric acid (CABA), sodium dimercaptopropane sulfonate (Na-DMPS) and vitamin B6 in large doses on liver and heart of rats with acute tetramine intoxication, and compare their separate effects of either GABA or Na-DMPS alone with those of the triad combination. Method Thirty rats were randomized into control group (n = 6), tetramine intoxication without treatment group (n = 6), tetramine intoxication treated with GABA group (n = 6), tetramine intoxication treated with Na-DMPS group (n = 6) and tetramine intoxication treated with triad combination (GABA + Na-DMPS + vitamin B6, GNDV n = 6) group. Samples of blood, liver tissue and heart tissue of rats with acute tetramine intoxication were collected immediately two hours after medication with different drugs. Serum alanine aminotrasferase (ALT), aspartate aminotransferase (AST), creatine kinase (CK) and creatine kinase isoenzyme (CK-MB) were measured, and the pathological changes of liver tissue and heart tissue were observed under microscope. Results The symptoms of poisoning were apparently relieved and the latency for convulsion/muscular twitch were obviously delayed in poisoned rats treated with GABA, Na-DMPS and GNDV separately. Furthermore, combination group showed the latent period delayed longer than either GABA or Na-DMPS groups The GABA, Na-DMPS and GNDV significantly lowered the serum levels of ALT, AST, CK and CK-MB in rats with tetramine intoxication, and those serum levels of enzymes were lower in GNDV group than those in either GABA group or Na-DMPS group. However, there were no difference in those serum enzymes between GABA group and Na-DMPS group. Moreover, the intoxicated rats treated with combination treatment had the slightest pathological changes in liver and heart (GNDV < GABA or Na-DMPS). Conclusions The co-administration of γ-aminobutyric acid, sodium demercaptopropane sulfonate and vitamin B6 in large doses for the treatment of tetramine intoxication is a method of choice.

Objective To investigate the effect of long-term high-fat diet on insulin resistance and the morphology and function of islets in rats and the relationship between them.Methods Thirty normal male Wistar rats (8 weeks old) were divided into two groups and fed either with normal chow (NC,n=15),or high-caloric and high-fat diet (HF,n=15).Insulin resistance was assessed by euglycemic hyperinsulinemic clamp technique. The insulin secretory function of islets was evaluated by intravenous insulin releasing test.Morphological and quantitative analysis of pancreatic tissues was performed by double-label insulin and glucagon immunohistochemistry.Proinsulin mRNA was detected by RT-PCR.Results The glucose infusion rate (GIR) in HF rats was significandy lower than that in NC rats [(5.83?0.79)mg?kg~(-1)?min~(-1) vs (7.60?1.29)mg?kg~(-1)?min~(-1),P＜0.05].Immunohistochemistry showed that HF rats had larger islet size [(15168?1327)?m~2 vs (6264?1840)?m~2,P＜0.01] and significantly reduced insulin relative concentration of?cells[(-5.15?0.03) vs (-4.81?0.17),P＜0.01],as compared with NC rats.The islet relative?cell volume was decreased signifieandy (P＜0.01),whereas the relative?cell volume was increased (P＜0.01).So the ratio of?to?were lower in HF [(4.68?1.01) vs (11.84?3.82),P＜0.05].The peak of insulin secretion in intravenous insulin releasing test in HF was at 10 min,whereas that in NC rats was at 5 min.AUC (area under curve) 10-60 rain of insulin in HF was higher than that in NC rats [(152.51?34.53)mIU?L~(-1)?min~(-1) vs (86.40?21.21) mIU?L~(-1)?min~(-1),P＜0.01].There was no difference in proinsulin mRNA levels between two groups. Conclusion Long-term high-caloric and high-fat diet results in early impairment of islet morphology and function, as well as significant insulin resistance,suggesting that the compensation ability of islets has already been impaired in the early course of type 2 diabetes mellitus.

According to the Chinese Pharmacopoeia 2015, only processed Aconitum tubers can be clinically applied, and the effect of processing is unclear. This research aimed to explore the effect of processing on cardiac efficacy of alkaloids in Aconitum tubers. First, the chemical ingredients in unprocessed and processed Aconitum tubers were identified and compared by using high performance liquid chromatography time-of-flight mass spectrometry (HPLC-TOF/MS) and multivariate pattern recognition methods. Then the representative alkaloids in Aconitum tubers, aconitine, benzoylaconine, and aconine, which belong to diester-diterpenoid alkaloids, monoester-diterpenoid alkaloids, and amine-diterpenoid alkaloids, respectively, were selected for further validation of attenuated mechanism. Subsequent pharmacological experiments with aconitine, benzoylaconine, and aconine in SD rats were used to validate the effect of processing on cardiac functions. After processing the Aconitum tubers, it was found that the contents of diester-diterpenoid alkaloids were reduced, and those of monoester-diterpenoid alkaloids and amine-diterpenoid alkaloids were increased, suggesting that diesterditerpenoid alkaloids were transformed into monoester-diterpenoid alkaloids and amine-diterpenoid alkaloids. Through further decocting the aconitine in boiling water, it was confirmed that the three alkaloids could be progressively transformed. Pharmacological experiments with aconitine, benzoylaconine, and aconine in SD rats showed that aconitine at a dose of 0.01 mg/kg and aconine at a dose of 10 mg/kg enhanced the cardiac function, while benzoylaconine at a dose of 2 mg/kg weakened the cardiac function. The effect of processing is attributed to the transformation of the most toxic diester-diterpenoid alkaloids into less toxic monoesterditerpenoid alkaloids and amine-diterpenoid alkaloids.

In order to study the regularity of shedding virus from infected SPF chickens and the formation of aerosol of H9N2 subtype AIV, SPF chickens were bred in a positive and negative pressure isolator. Aerosol samples were collected by AGI-30 (All Glass Impinger-30) extractor, and simultaneously trachea and cloaca samples were collected by tracheal swabs and cloacal swabs in different periods after challenged with vi- ruses. The above-mentioned samples were detected by HI, Dot-ELISA and RT-PCR methods. The results in- dicated that aerosols were isolated from the 4 days to the 43 days after inoculation. It was proved that H9N2 subtype AIV could copy themselves in respiratory passage and cloaca, and then could formation of aerosols. AIV H9N2 subtype could be isolated from cloacal and tracheal swabs 3 days after inoculation and lasted for 45 days, viruses were detected from all infected SPF chickens on 7 days.

A comparison of the volatile compounds in Rhizomes Curcumae (Ezhu) and Radix Curcumae (Yujin) was undertaken using gas chromatography-mass spectrometry (GC-MS).Ultrasonic extraction and GC-MS methods were developed for the simultaneous determination of five sesquiterpenes,namely,α-pinene,β-elemene,curcumol,germacrone and curdione,in Ezhu and Yunjin.Good linearity (r＞0.999) and high inter-day precision were observed over the investigated concentration ranges.The validated method was successfully used for the simultaneous determination of five sesquiterpenes in Ezhu and Yujin.The quantitative method can be effectively used to evaluate and monitor the quality of Chinese curcuma in clinical use.

A comparison of the volatile compounds in Rhizomes Curcumae （Ezhu） and Radix Curcumae （Yujin） was undertaken using gas chromatography mass spectrometi-y （GC-MS）. Ultrasonic extraction and GC-MS methods were developed for the simultaneous determination of five sesquiterpenes, namely, α-pinene, β-elemene, curcumol, germacrone and curdione, in Ezhu and Yunjin. Good linearity （r〉0.999） and high inter-day precision were observed over the investigated concentration ranges. The validated method was successfully used for the simultaneous determination of five sesquiterpenes in Ezhu and Yujin. The quantitative method can be effectively used to evaluate and monitor the quality of Chinese curcuma in clinical use.

Background Previous studies showed that after herpes simplex virus-1 (HSV-1) infection of the cornea,matrix metallo proteinase-2 (MMP-2) (produced by corneal cells and corneal epithelial cells) plays an important role in the development of HSK.Focal adhesion kinase (FAK)plays an important role on the expression,release and activation of MMPs.This study explored the expressions of MMP-2 and FAK,which induced by HSV-1 infected human corneal epithelial cells.Objective To investigate MMP-2 and FAK expression in HSV-1 infected human corneal epithelial cells.Methods Human corneal epithelial cells were infected with HSV-1 in vitro to establish cell model of viral infection.The expression of MMP-2 and FAK were detected by reverse transcription PCR (RT-PCR),Western blot,immunohistochemical method and immunofluorescence method at 2 hours,20 hours and 40 hours after infection.Results At 2 hours,20 hours and 40 hours after infection,the expressionis of MMP-2 mRNA and FAK mRNA were significantly increased in comparison with uninfected cells (MMP-2 mRNA:Ftime =0.968,P=0.436 ; Fgroup =47.649,P =0.000 ; Fi ion =0.757,P =0.536.FAK mRNA:Ftime =0.658,P =0.631 ; Fgroup =35.182,P=0.000;Finteraction =1.386,P=0.137).Western blot assays showed that there were no significant differences in p-FAK,FAK or MMP-2 expressions between infected cells and control cells after 2 hours (P＞0.05),but the expression levels of infected cells were significantly increased at 20 hours and 40 hours (both at P ＜ 0.05).Immunohistochemistry results showed that longer infection time was associated with an increased number of cells staining for MMP-2,FAK and p-FAK.Conclusions At the initial stage of HSV-1 infected,p-FAK plays an important role in the process of virus invading and MMP-2 activation.

Objective To study interleukin-1 receptor(IL-1R) and connexin(Cx36) gene expression following Mg 2+-free-induced seizures in cultured developing neuron. Methods Rat embryo cortical neurons cultured for 6 and 17 days were exposed to Mg 2+-free media to induce seizure. At different time after Mg 2+-free treatment, real-time RT-PCR was used to detect IL-1R and Cx36 mRNA expression. Results 1. IL-1R mRNA expression transiently decreased after Mg 2+-free treatment in neurons cultured for 6 and 17 days in vitro. Then the levels of IL-1R mRNA expression recovered in neurons cultured for 6 days, but IL-1R mRNA expression were increased in neurons cultured for 17 days compared with control group and the peak was at 24 hours. 2. In neurons cultured for 6 days in vitro, Cx36 mRNA expression increased after Mg 2+-free treatment compared with control group, the peak was at 24 hours. But in neurons cultured for 17 days in vitro, Cx36 mRNA expression decreased at 6 hours after Mg 2+-free treatment compared with control group, the peak was at 24 hours. Conclusions IL-1R mRNA and Cx36 mRNA expression following Mg 2+-free-induced seizures are different between the neurons cultured for 6 and 17 days in vitro. This is possibly related to the different neuron injury between 6 and 17 days in vitro following seizures.