Aim Tostudytheeffectof4-phenlybuty-rate acid(4-PBA) on the heart function of diabetic rats and to explore its underlying mechanism. Methods MaleSprague-Dawley(SD)ratsweredividedintothree groups randomly: ( 1 ) control rats;( 2 ) diabetic rats;(3) 4-PBA treated diabetic rats. Type 1 diabetic mod-el was induced by single intraperitoneal injection of strepotozotocin (60 mg·kg-1 ) . After five weeks dia-betic model was established, diabetic rats were treated with 4-PBA by P. O at the dose of 1 g·kg-1 per day for 20 weeks. At the end of the experiment, hemody-namics of the left ventricle and main artery were detec-ted through right carotid artery cannulation in rats. The level of blood glucose, the activity of superoxide dis-mutase( SOD) and nitric oxide synthetase ( NOS) and the content of malondialdehyde ( MDA ) and nitric ox-ide( NO) of serum and myocardial tissue in rats were measuredbycolorimetry.Results Thetreatmentof4-PBA had no effect on blood glucose, the weight of body and heart, but slightly increased systolic and diastolic pressure of artery, heart rate, systolic pressure of left ventricular, maximum increase rate and minimum de-crease rate of left ventricular pressure( ± dp/dt) in di-abetic rats. It also slightly decreased diastolic pressure of left ventricular, shortened diastolic duration of left ventricular ( P > 0. 05 ) . Moreover, it significantly shortened relaxation time of left ventricular in diabetic rats (P<0. 05). In addition, the treatment of 4-PBA obviously enhanced the activity of SOD and NOS, NO content, and reduced the content of MDA in serum and heartofdiabeticrats(P<0.05).Conclusion 4-PBA has a potential protective effect on heart function in diabetic rats, which is achieved by ameliorating he-modynamics and significantly improving diastolic dys-function in diabetic rats. The underlying mechanism may be related to the inhibition of oxidative stress and promoting the genesis of NO in myocardial tissue.

Objective To build a normal value of serum sex hormone in the healthy children in favour of the diagnosis of children precocious puberty and the evaluation of the growth of the children.Method Serum of 462 healthy children(aged from 1 month to 14 years;205 females,257 males)was collected,and the level of testosterone(T) and 17-estradiol(E2).Results There were no significant deviation in the levels of E2 of deferent genders between 1-12 months,but the level of T in boys and girls were obviously different.The puberty of boys was la-ter than girls.There was no significant deviation in the level of E2 of the boys in different periods,but the levels of T in boys at different ages were obviously different.Conclusions With the improvement the detection methods,the normal values of the serum sex hormone in healthy children have been changing.It is helpful for diagnosis of children precocious puberty by rebuilding normal values of T and E2 .

In order to understand the representative situation of medical services supply for China's public hospital in the mobile side,the research takes China hospital technology (comprehensive) influence ranked top 100 hospitals as the research object.From service supply channels,service content,providing mode,supply cooperation,comparative analysis of public hospitals from the traditional medical treatment to the mobile health reform is done.The 100 hospitals attaches great importance to the channel construction of mobile terminals,and App and WeChat have been mostly layout;On the basis of the medical process,a variety of service content is derived and innovated;Service providers change gradually to the context of navigation and mobile O2O medicine;The cooperation between hospitals and the technology companies is becoming more and more frequent.At the same time,these changes will also in turn promote the hospital process optimization,interconnection and multi game deepening governance.

Aim To explore the effects of hydrocortisone on intracellular calcium in microglial cells.Methods The intracellular calcium was measured by instantaneous scanning with confocal laser microscope(CLM) in BV-2 cells, and fluo3-AM was used to dye the intracellular calcium.Results Both hydrocortisone and nicotine could obviously increase intracellular calcium in BV-2 cells(P<0.05).It was indicated by instantaneous scanning with CLM that hydrocortisone induced the rising of intracellular calcium immediately, and reached the peak about at the fifteenth second, and sustained for 10 seconds, then declined to baseline at 200th second.The effect of hydrocortisone on intracellular calcium exhibited a highly consistency with nicotine.Antagonist of glucocorticoid receptors RU486 could not abolish the rising of intracellular calcium induced by hydrocortisone(P>0.05);but the blocker of α7 nicotinic acetylcholine receptor(α7nAChR) methyllycaconitine could suppress the rising of intracellular calcium induced by hydrocortisone(P<0.05).Conclusion Hydrocortisone enhances intracellular calcium via α7nAChR in microglial cells, which not only demonstrates the non-genomic effect of glucocorticoid, but also suggests that glucocorticoid could serve as endogenous ligand of α7nAChR.

OBJECTIVE:To study pharmacokinetics of domestic and imported Phenazopyridine hydrochloride tables and bioavailability of domestic tablets, and to evaluate the bioequivalence of two kinds of tablets. METHODS: A randomized crossover design was performed in 18 healthy male volunteers. They received a single oral dose of domestic or imported tablets 200 mg. Plasma concentration of phenazopyridine hydrochloride was measured by HPLC. The pharmacokinetic parameters were calculated by 3p97 software and relative bioavailability was evaluated. RESULTS: The plasma concentration-time curves of domestic and imported tablets conformed to one-compartment model. Main pharmacokinetic parameters of domestic tablets vs. imported tablets were as follows: t1/2Ke(3.52?2.03) h vs. (3.18?1.85)h; tmax(0.76?0.33) h vs. (0.79?0.43)h; Cmax(76.41?70.15) ng?mL-1 vs. (75.49?70.37) ng?mL-1; AUC0～8(159.10?116.32) ng?h?mL-1 vs. (164.65?129.89) ng?h?mL-1; AUC0～∞(237.12?115.06) ng?h?mL-1 vs. (262.69?155.05) ng?h?mL-1. The relative bioavailability of domestic tablets was (96.63?14.05)% compared with imported tablet. There was no significant difference between the pharmacokinetic parameters of two formulations by variance analysis, t-test and 1-2? confidence interval method. CONCLUSION: The domestic and imported tablets are bioequivalent.

Objective:To investigate the effects of nitric oxide(NO) and inducible nitric oxide synthase (iNOS) in the experimental abdominal aortic aneurysm (AAA) rat model.Methods:An intra-aortic elastase infusion model was used.Control rats received intra-aortic saline infusion.In the remaining groups,intra-aortic elastase infusion was used to induce aneurysm formation.These rats were treated with intraperitoneal injections of saline postoperatively(experimental group),aminoguanidine postoperatively(medicine group).Serum NO and aortic diameter were measured,Changes of histology,iNOS and MMP-9 were observed in the aortic wall.Results:Experimental group produced AAAs with significant production of iNOS,MMPs and serum NO compared with controls.In medicine group reduced aneurysm size and displayed suppression of MMPs expression,inflammatory infiltrates and serum NO production were detected.Conclusion:Expression of iNOS and MMP-9 are induced and serum NO levels are increased in experimental AAA,iNOS and NO production by iNOS play an important role with detrimental effects during experimental aneurysm development.

Objective To investigate the application of field work logs in collection of the disaster information in medical rescue of earthquake.Methods The self-designed work logs were made according to the condition of the wounded in the medical rescue of Lushan earthquake.Through the field work logs,we got first hand information which facilitate statistics,inquiry and subsequent follow-up work.Results By using the field work logs,the rescue workers guaranteed the collection of original data timely and accurately,supplied a number of rich and a-list clinical data and also facilitated the masses in disaster areas looking for their relatives.Conclusions The application of field work logs played a pivotal role in medical rescue of Lushan earthquake.It can be widely extended as a general manner in emergency disaster rescue after further perfection.

Automation workstation refers to a kind of fully automatic platform,which use the automatic technology to analysis,processe batches of biological samples.It can finish liquid handling,transfering,mixing and other operatious in short time,particularly suitable for PCR templates'preparation of large amount of biological samples.This article mainly discusses the basic patterns,methods and forensic applications of automated DNA extraction workstation,aimed at making the technology more widely applied in forensic DNA analysis.

0.05).Conclusions The results by GH exercise test is identified with GH provocative test.Because the GH exercise test is safe and simple,it is appropriate to use the GH exercisetest to screen for growth hormone deficiency during childhood.

Objective To determine the association of acanthosis nigricans(AN) with values for estimating insulin resistance and adipocytokine levels in simple obese children. Methods These subjects concluded 38 simple obese children. AN was present in 17 of 38 children. Height, weight and abdominal circumference were recorded and fasting blood sample was obtained for measurement of blood glucose, plasma insulin, leptin, and plasminogen activator inhibitor 1 (PAI-1) levels which were known as the risk factors of cardiovascular disease. We obtained homeostasis model assessment insulin resistance index (HOMA-R) by fasting blood glucose and plasma insulin levels. Results The severity of obesity, abdominal circumference, fasting insulin levels and HOMA-R were significantly higher in obese children to AN compared to those without AN. There was the tendency that children with AN had higher levels of leptin and PAI-1 compared to children without AN. Conclusions These results suggest that obese children with AN may have a risk of cardiovascular disease as well as type 2 diabetes mellitus.