ABSTRACT:Norovirus infection in human and animals can cause acute viral gastroenteritis .With molecular biology ,cell culture and animal models of development ,the different groups of norovirus genome sequenced ,the virus capsid protein ex‐pressed in vitro in eukaryotic ,prokaryotic and plant systems ,and thus the characteristics of the virus with some new under‐standing and perspective .Recently ,an increasing number of studies were focused on the norovirus and related topics along with the research progress all around the world .Here we systematically expound the latest advances in norovirus research from dif‐ferent aspects ,such as genome structure and function ,cell culture ,tissue tropism ,epidemiology ,virus infection mechanism , detection methods and vaccine development .Furthermore ,different viewpoints for norovirus molecular evolution ,detection technology and transmission route will be discussed as well .

0.05). Serum glutamate pyruvate transaminase activity significantly decreased in the injured liver BMSCs group (P

Objective: To observe changes of variation of red blood cell distribution width-coefficient (RDW-CV), levels of matrix metalloproteinase (MMP)-2, MMP-9 and tissue inhibitor of metalloproteinases (TIMP)-1 in patients with essential hypertension (EH) of different risk stratification.Methods: A total of 105 EH patients treated in our department from Oct 2015 to Sep 2016 were regarded as EH group.According to hypertension risk stratification, they were divided into low risk group (n=34), medium risk group (n=38) and high-and extremely high risk group (n=33).Another 105 subjects with corresponding age and gender were selected as healthy control group during the same period.RDW-CV, serum levels of MMP-2, MMP-9 and TIMP-1 were measured and compared among all groups.Multivariate Logistic regression analysis was used to analyze relationship among above indexes and hypertension.Results: Compared with healthy control group, there were significant rise in RDW-CV [(12.57±1.46) vs.(14.54±1.82)], serum levels of MMP-2 [(121.71±18.86)ng/ml vs.(155.43±40.81)ng/ml], MMP-9 [(109.72±21.80)ng/ml vs.(191.23±53.05)ng/ml] and TIMP-1 [(59.42±9.41)ng/ml vs.(83.64±15.82)ng/ml] in EH group, P<0.05 or <0.01.Compared with low risk group, there were significant rise in RDW-CV [(13.35±1.54) vs.(14.43±1.17) vs.(15.90±1.81)], serum levels of MMP-2 [(131.21±35.24) ng/ml vs.(152.16±33.15)ng/ml vs.(184.16±37.14)ng/ml], MMP-9 [(163.95±38.61) ng/ml vs.(198.70±43.52)ng/ml vs.(232.83±54.12)ng/ml] and TIMP-1 [(73.15±13.12)ng/ml vs.(83.78±10.22) ng/ml vs.(94.27±16.77)ng/ml] in medium risk group, high-and extremely high risk group, and those of high-and extremely high risk group were significantly higher than those of medium risk group, P<0.05 or <0.01.Multivariate Logistic regression analysis indicated that RDW-CV, MMP-2, MMP-9 and TIMP-1 were independent risk factors for hypertension (OR=2.248~2.725, P<0.05 or <0.01).Conclusion: RDW-CV,MMP-2,MMP-9 and TIMP-1 are independent risk factors for hypertension, active monitoring and intervention should be given for these risk factors.

OBJECTIVE:To investigate the current situation and trend of clinical application of calcium channel blockers METHODS:The kinds and sum of money of calcium channel blockers,consumed in our hospital during the period 1999～2001,were collected and the prospects of clinical application of the drugs were analyzed with consulting the relevant literature RESULTS:The consumption of calcium channel blockers remained stable during the period 1999～2001,and the most commonly-used drugs were dihydrocollidines Domestic and joint ventrue products held a leading post in clinical application CONCLUSION:Sustained and controlled release preparations of calcium channel blockers have broad prospects in clinical application

10.3969/j.issn.1007-3969.2013.04.009

Objective To investigate the value of serum IgG4 in diagnosis of IgG4-RD and in differentiation from rheumatic diseases.Methods Total of 23 patients with IgG4-RD and 502 patients with rheumatic diseases were enrolled,who presented at Changhai Hospital in 2010 to 2011.In the study,rheumatic diseases were categorized into groups of Sj(o)gren syndrome (n =26),ankylosing spondylitis (n-50),systemic sclerosis (n =3),rhcumatoid arthritis (RA,n =125),mixed connective tissue disease (n =15),systemic lupus erythematosus (SLE,n =212),adult onset still disease (n =20),Behcet syndrome (n =17),polymyositis (n =12),dermatomyositis (n =12),polymyalgiarheumatica (n =10).Serum IgG and IgG4 levels were measured by a rate nephelometer assay.The ROC curves were constructed to identify the optimal serum IgG4 cutoff value for diagnosing IgG4-RD and evaluate its sensitivity and specificity.Results The mean levels of serum lgG4 in the group with IgG4-RD were 11.4(5.0-14.8) g/L.In about 95.6％ IgG4-RD patients,the serum IgG4 level was higher than ＞ 1.4 g/L and other rheumatic diseases (U values were 6.0,21.0,0,58.5,0,9.0,3.0,4.0,0,3.0,3.5,P ＜0.01).The levels of serum IgG4 with RA was 0.6(0.3-1.2) g/L,the levels of serum IgG4 with SLE was 0.2 (0.1-0.4) g/L.There were statistical differences between RA and SLE (U value was 5847,P ＜ 0.01).At the same time,some patients with other rheumatic diseases were found serum IgG4 level higher than ＞ 1.4 g/L,which was about 10％ in the patients whith RA,ankylosing spondylitis,adult onset still disease and polymyalgiarheumatica.According to the ROC constructed the cut off value in present study was 2.2 g/L,and sensitivity and specificity were 95.7％ and 97.4％,respectively.Area under the cerve (AUC) was 0.995.There were no significant differences between the sensitivity and specificity values obtained with a cutoff value of 2.2 g/L.In patients with other rheumatic diseases,the ratio of high serum IgG4 level (＞ 2.2 g/L) were declined obviously,except polymyalgiarheumatica,it was less than 10％.For differentiation from rheumatic diseases specificity values were higher.Conclusions The cut off value of 2.2 g/L is useful for diagnosing IgG4-RD,and in differentiation from rheumatic diseases.The high serum IgG4 concentrations are not specific to IgG4-RD.The cut off value of 2.2 g/L is better to diagnose IgG4-RD,and contributes to the differential diagnosis of IgG4-RD and other rheumatic diseases,but it needs to be further confirmed in clinical practice.

Aim To investigate the neurotoxicity and the changes of nitration in the striatum of rats treated with methamphetamine(MA).Methods The rats were randomly divided into MA group and control group.The stereotyped behavior and body temperature of the rats were recorded.The differences of nitric oxide, nitric oxide synthase(NOS)and nitroprotein were compared between the two groups.Results The score of stereotyped behavior and the body temperature of the rats in MA group were significantly higher than those in the control group(P ＜0.01);Compared with the control group, the content of NO and the activity of NOS of striatum in MA group were significantly increased(P ＜0.01), and nitration of protein was also upregulated(P ＜0.01).Conclusion The increases of NOS activity, NO level and nitroprotein may play an important role in MA-induced neurutoxity in rat striaturn.

AIM: To investigate the molecular mechanism of Epstein-Barr virus encoded latent membrane protein 1 regulated cellular proliferation in nasopharyngeal epithelial cells. METHODS: The nasopharyngeal epithelial cells NP69 were infected with RV-pLNSX (the empty vector) and RV-LMP1 retroviruses, respectively. Therefore, the NP69-pLNSX and NP69-LMP1 cell lines were established. Sequentially, cellular proliferation of NP69-pLNSX and NP69-LMP1 cells was compared to draw the cellular growth curve. The experiments of plate clone formation and forming of soft agar colony were conducted. Meanwhile, the differential expression of proteins were identified between NP69-pLNSX and NP69-LMP1 cell lines by proteomic methods, and the expression levels of partial identified proteins were verified. RESULTS: (1) LMP1 was able to accelerate cellular proliferation of nasopharyngeal epithelial cell NP69 (n=3, P<0.05). (2) Twenty two proteins (9 up-and 13 down-regulated) of LMP1 mediated regulation were identified from infected NP69 cell lines, and the differential expression of partial identified proteins was confirmed by Western blotting and fluorescent real-time quantitative RT-PCR. CONCLUSION: LMP1 probably mediates the regulation of vimentin protein and keratin 19 protein expression to promote cellular proliferation in NP69 cells.

Acute Coronary Syndrome ; complications ; drug therapy ; Adrenergic beta-Antagonists ; therapeutic use ; Aged ; Heart Failure ; complications ; drug therapy ; Humans ; Male ; Middle Aged ; Treatment Outcome

Objective To discuss the clinical value of the expression level of acute lower respiratory tract Boka virus (HBoV)in‐fectecd children whose detection serum specific antibody .Methods 904 cases of children with acute lower respiratory tract Boka vi‐rus infection hospitalized from March 2011 to July 2014 who were selected as study objects ,serum ,sputum ,bronchoalveolar lavage fluid HBoV DNA positive were as the gold standard for diagnosis of acute lower respiratory tract infection in HBoV ,the positive serum HBoV antibody of HBoV in children with acute lower respiratory tract infection was defined as the observation group ,serum HBoV antibody negative acute lower respiratory tract infection in children with HBoV was defined as the control group ,the correla‐tion between serum HBoV antibody and acute lower respiratory tract HBoV infection children whose clinical characteristics were analyzed .Results Serum HBoV antibody in the diagnosis of acute lower respiratory tract infection of HBoV whose sensitivity ,spe‐cificity ,positive predictive value ,and negative predictive value ,accuracy of diagnosis were separately 60 .32% 、90 .25% 、31 .67% 、96 .81% 、88 .16% .In the general data ,between the observation group and the control group in gender ,age ,hospitalization time , there were no significant differences(P>0 .05) .In the clinical manifestations ,nasal congestion and runny nose ,cough ,fever ,vomi‐ting and diarrhea ,shortness of breath ,breathing difficulties whose occur rates had no significant differences between the observation group and the control group(P>0 .05) ,the incidence of wheezing of the observation group was significantly higher than that of the control group ,the difference had statistical significance (P<0 .05) .The comparison of clinical diagnosis between the observation group and the control group had no significant difference(P>0 .05) .Conclusion Serum HBoV antibody is in favor of acute lower respiratory tract infection of HBoV in the diagnosis of exclusion ,and the serum HBoV antibody positive and acute lower respiratory tract infection of HBoV have a certain relationship in children with wheezing symptoms .