Objective:To discuss the effect of knock-out MG53 on skeletal muscle,and to determine whether MG53 can protect skeletal muscle from injury during delayed onset muscle damage(DOMS).Method:Eighty-four eight-week old C57 mice were divided into two groups due to their gene (WT and KO),and each group were divided into 7 subgroups again.14 groups,6 mice in each.They were WC,WE0,WE2,WE12,WE24,WE48,WE72 and KC,KE0,KE2,KE12,KE24,KE48,KE72.At each time point after 3 days eccentric exercise,the mice were decapitated after drawing blood.The rectus femoris of left leg was used to detect the level of MG53 with Western blot,the other side were used to do electron microscope analysis.Blood CK were measured also.Result:The CK of K0 raised remarkably and decreased gradually until W 12.But the second peak appear at W24 and decreased again gradually since then.Ultrastructural changes of skeletal muscle after eccentric exercise at different time points is obvious.The injury is worsen gradually from Wo to W24,and improved gradually from W48 to W72.Comparing with W groups,the injury in K group were even worsen an each time point.The MG53 of W0 and W24 were 16％ and 11％ higher than those before exercise (p＜0.05)and restored to normal in 72 hours after exercise.Conclusion:The injury after severe exercise is more severity in MG53 knock-out mouse than those in wild mouse.and the MG53 protein increased significantly.It suggests that MG53 may significantly relieve the skeleton muscle injury in delayed muscle sore period.

To adapt to the rapid development of medicine and law and the impact of globalization of crime,it is necessary to reinforce the forensic pathology postgraduate general competence.According to the teaching experience of America and Europe for reference,we need to adopt multi-means to enhance forensic pathology postgraduate comprehensive competence.

Background Many methods are widely studied to improve the therapeutic effect of trabeculectomy for glaucoma,and the clinical effectiveness of the amniotic membrane application during trabeculectomy is one of the research hotspots.Objective This study was to evaluate the efficacy and safety between trabeculectomy with (TE-AMT) and without amniotic membrane transplantation (TE-noAMT) for treating glaucoma.Methods Articles published from 1965 to December 2010 were searched from The Cochrane Library,PubMed,EMBASE,CNKI,Chinese Biomedicine Database,internet by computer,and manual search then was performed according to the predetermined strategy.Randomized controlled trials (RCT) on TE-AMT and TE-noAMT were included.The quality of included articles were scored based on Jadad table,and the relative parameters and information were extracted,including author,design of the trials,country,number of eyes and patients,gender,follow-up duration,age,classification of glaucoma,baseline IOP and loss rate.The main analysis indicators were the percentage of IOP reduction,completely operative successful rate,qualified success rate and adverse events.The pooled estimates were carried out with RevMan version 5.0 software.Results Nineteen RCTs documents were reviewed by meta-analysis with the Jaded scores ≥3 in 2 papers and ＜3 in 17 papers.Total 977 eyes of 818 patients were included.The weighted mean differences (WMD) of the percentage of IOP from baseline were (WMD =8.47％,95％ CI:5.20-11.75) at 6 months and (WMD=9.37％,95％ CI:4.97-13.77) at 12 months postoperatively.Relative risk (RR) of complete success rate and qualified success rate at postoperative 6 months were (1.40,95％ CI:1.19-1.65) and (0.47,95％ CI:0.22-1.00),respectively.RR values of adverse event such as shallow anterior chamber,hyphema,hypotony and choroidal detachment,failed filtering blebs at 6,12 months were 0.51 (95 ％ CI:0.30-0.85),0.43 (95％ CI:0.20-0.92),0.51(95％CI:0.26-1.00) and 0.57(95％CI:0.14-2.31),0.31(95％CI:0.20-0.47),0.31 (95％ CI:0.17-0.55),respectively.Conclusions TE-AMT appears to have better efficacy in lowering IOP,increasing complete success rate and reducing adverse event I in comparison with TE-noAMT.

39℃)developed at the progressive stage of this disease.Physical examination showed variously sized,round or oval,atrophic and variola-like scars along with scattered erythematous patches,papules, necrosis and crusts on the face and extremities.The face was edematous,and there were some edematous and erythematous plaques with a necrotic center on the legs and arms.Histological examination revealed a massive infiltration with atypical CD8~+lymphocytes around the vessels and appendages in dermis.A diagnosis of CD8~+cutaneous T-cell lymphoma(CTCL)was made.Glucocorticoid and immunosuppressants were effective in controlling the condition.Up to the time of the writing,there has not been any definite evidence of systemic involvement.

The purpose of this study is to investigate the enantioselectivity of norgestrel (NG) transdermal permeation and the potential influence of linalool and lipids on the enantioselectivity. In vitro skin permeation studies of NG across the excised rat skins were performed with Valia-Chien diffusion cells, and the permeation samples were analyzed by enantioselective HPLC. The possible enantioselective permeation of NG across intact rat back skin and lipids extracted rat back skin and the influence of linalool were evaluated. The skin permeation rate of dl-NG was two times higher than that of l-NG when donor solutions (EtOH/H2O 2 : 8, v/v) containing l-NG or dl-NG. It may be mainly attributed to the solubility discrepancy between enantiomer and racemate. The enantioselective permeation of dl-NG across intact rat skin was observed when the donor solutions containing dl-linalool. The permeation flux of l-NG was 22% higher than that of d-NG. But interestingly, the enantioselective permeation of dl-NG disappeared under the same experimental condition except that the lipid extracted rat skin was used. Attenuated total reflection-fourier transform infrared spectroscopy analysis of stratum corneum showed that the wave number for asymmetric CH2 stretching vibrations of lipids treated with dl-linalool was greater than that of the control. The results indicated that the enantioselective permeation of NG may be contributed by the interaction between dl-linalool and lipids. More than half of lipids were composed of ceramides. The stereospecific interaction maybe existed among chiral enhancer (linalool), lipids (ceramides) and/or chiral drugs (NG).
Administration, Cutaneous ; Animals ; Lipids ; pharmacology ; Monoterpenes ; pharmacology ; Norgestrel ; pharmacokinetics ; Rats ; Skin Absorption ; drug effects ; Spectroscopy, Fourier Transform Infrared ; Stereoisomerism

Animals ; Male ; Particle Size ; Rats ; Rats, Sprague-Dawley ; Respiratory Distress Syndrome, Adult ; chemically induced ; Silicon Dioxide ; chemistry ; toxicity

Objective To investigate the distribution of urate crystal as well as the relationship bet ween the features of the crystals and the attacks of joint pain and/or swollen by foot dual-energy CT.Methods Eight-four patients (68 were diagnosed as gout, 11 were patients with hyperuricemia and 5 were diagnosed as other types of arthritis) who recently experienced foot swelling and/or pain were enrolled and all of them were performed foot dual-energy CT.The relationship between the features of the urate crystals and the attacks of gouty arthritis was determined by Chi test and the potential risk factors were identified by Logistic multiple regression analysis.Results Two hundred and seventyeight urate crystal depositions were found in 68 gout patients,and the most common deposition sites were the distal parts of the first toe(18.2％),the first metatarso-phalangeal joint ( 16.8％ ),calcaneus ( 17.5％ ),the lower end of tibia ( 11.8％ ).Furthermore,patients with the urate crystals deposited in the first metatrasophalangeal joint or the lower end of of tibia were more likely to experience acute episodes of gout attack (P＜0.01,P＜0.05 respectively).In addition,the shape,size and quantity of urate crystals also affected episodes of acute attack of gout.Conclusion Dual-energy CT,which is a non-invasive method,could clearly reveal urate crystal depositions and is helpful for the diagnosis and follow-up of patients with gout.The location,shape,size and quantity of urate crystals and soft tissue swelling,bone erosion may affect the acute attack of gout.

Objective: To explore correlation among clinic blood pressure (CBP), ambulatory blood pressure (ABP) and cardiovascular diseases in diabetic populations.Methods: A total of 336 patients complicated with type 2 diabetes mellitus, who received 24h ambulatory blood pressure monitoring, were selected.According to complicated with coronary heart disease or stroke or not, they were divided into cardiovascular disease group (CVD group, n=122) and no cardiovascular disease group (NCVD group, n=214).Blood lipids, blood pressure, CBP and ABP etc.were compared between two groups;according to median of 24h mean SBP (122mmHg), they were divided into <122mmHg group (n=168) and ≥122mmHg group (n=168), incidence of cardiovascular diseases was compared between these two groups.Results: (1) Compared with NCVD group, there were significant rise in age, percentages of smoking and hypertension, and plasma hsCRP level in CVD group (P<0.05 or <0.01);for ambulatory blood pressure,there were significant rise in levels of 24h mean SBP(mSBP) [(119.8±8.7)mmHg vs.(124.4±9.6) mmHg], daytime SBP (dSBP)[(121.4±9.3) mmHg vs.(128.0±10.3) mmHg] and nighttime SBP(nSBP) [(114.4±4.2) mmHg vs.(120.8±4.7) mmHg] in CVD group, P<0.01 all;there was no significant difference in CBP between two groups;(2) compared with <122mmHg group, there were significant rise in percentages of stroke (20.2% vs.25.0%) and total cardiovascular diseases (32.7% vs.39.9%) in ≥122mmHg group, P<0.01 both;(3) Logistic regression analysis indicated that diabetic patients no matter complicated with hypertension or not, 24h mean SBP was always an independent risk factors of diabetic patients complicated cardiovascular diseases (OR=1.83, 1.36, P<0.05 all).Conclusion: ABP is superior to CBP in predicting cardiovascular risk in patients with diabetes, and 24h mean SBP may be a good ABP index to predict cardiovascular risk.

Aim To investigate the role of TGF-β3 in the anti-proliferation effect of ursolic acid(UA)in co-lon cancer cells and the possible molecular mechanism underlying this effect.Methods We introduced crys-tal violet staining,flow cytometry and Western blot as-say to determine the effect of UA on proliferation and apoptosis in HCT1 1 6 cells.The levels of TGF-β3, Smad2 /3 and β-catenin in HCT1 1 6 cell were evaluated by RT-PCR and Western blot.Finally,TGF-β3 inhibi-tor and recombinant adenovirus,and luciferase reporter assay were used to analyze the possible mechanism through which TGF-β3 mediated the anti-cancer effect of UA in HCT1 1 6 cells.Results UA inhibited the proliferation and induced apoptosis apparently in HCT1 1 6 cells.UA down-regulated TGF-β3 both in mRNA and in protein level.Meanwhile,UA decreased the phosphorylation of Smad2 /3 concentration depend-ently,although no significant effect was found on the total protein level of Smad2 /3 in HCT1 1 6 cells.Over-expression of TGF-β3 attenuated the inhibitory effect of UA on the proliferation of HCT1 1 6 cells,while the TGF-β3 inhibitor potentiated this effect. UA sup-pressed the transconduction of Wnt/β-catenin signaling in HCT1 1 6 cells through decreasing the level of β-catenin.Exogenous expression of TGF-β3 increased the level of β-catenin and partly reversed the UA-in-duced decrease of β-catenin.However,TGF-β3 inhib-itor potentiated the inhibitory effect of UA on β-catenin in HCT1 1 6 cells.Conclusion The anti-proliferation activity of UA in colon cancer may be partly mediated through down-regulating TGF-β3 to suppress Wnt/β-catenin signaling at least.

[Objective] The present study was to evaluate the association of serum total cholesterol level and prognosis in patients with acute left heart failure and associated mechanisms.[Methods] Sixty-eight patients due to acute episode of left heart failure prospectively enrolled,and baseline data and biochemical parameters were collected.After discharge,patients were follow-up for 1 month and they were divided into two groups (with and without cardiovascular events).Differences between groups were evaluated and the association of serum total cholesterol level and cardiovascular events were analyzed by logistic regression analysis.[Results] The mean age was 57.3 ± 12.6 years old and 52 cases were male patients accounting for 76.5 ％.Among these patients,46 had a diagnosis of coronary heart disease (67.6 ％),10 rheumatic heart disease (14.7 ％),12 dilated cardiomyopathy (17.7％),38hypertension (55.9％) and 24 diabetes mellitus (35.3％).After 1 month's follow up,39 patients (57.4％) had experienced cardiovascular events,36 cases were re-hospitalized,and 3 died from heart failure.Compared to those with cardiovascular events,event free individuals were younger and were less likely smokers (P ＜ 0.05).In addition,event free group had lower serum levels of N-terminal pro-BNP and C-reactive protein (P ＜ 0.05) while serum levels of total cholesterol and albumin were significantly higher (P ＜ 0.05).There was no significant difference in medication between these two groups.After adjusted for age,gender,smoking,systolic blood pressure,serum albumin level,diabetes,hypertension and medications,increased total cholesterol level was independently associated with better prognosis with odds ratio of 0.91 (95 ％ confidence interval 0.80-0.96).Further adjusted for C-reactive protein,the association was attenuated to non-significance,with odds ratio of 0.97 (95 ％ confidence interval 0.87-1.09).[Conclusion] Adequate serum total cholesterol level was beneficial for improving short-term cardiovascular outcomes in patients with left heart failure and the potential mechanisms might be related to cholesterol effects on improving nutritional status and anti-inflammation.