Analysis of the Complete Genomes of Enterovirus 71 Subtypes in China.

Enterovirus 71 (EV-A71) is one of the most pathogens to hand, foot, and mouth disease (HFMD) as well as neurological complications in young children. Molecular characteristic of EV-A71 is important to prevent the virus outbreak. Here, the complete genomes of EV-A71 from China between 1998 and 2019 were downloaded from GenBank.

Analysis of the effect of a root cause analysis in elderly patients with acute pancreatitis: a randomized trial.

Background: A root cause analysis (RCA) is a structured method used to address problems. It seeks to identify the root causes of problems, and proposes solutions to achieve an ultimate goal. This study sought to investigate the effects of an RCA in treating elderly patients with acute pancreatitis (AP).

Clinical characteristics and association analysis of persistent low-level HBsAg expression in a physical examination population with HBV infection.

Certain patients with hepatitis B virus (HBV) infection present with persistently low levels of serum hepatitis B surface antigen (HBsAg) and have been indicated to have low rates of HBV nucleic acid replication. To explore the serological and molecular epidemiological characteristics of HBV population with low-level HBsAg in the present study, associated serum markers and virologic genotype detection were performed accordingly. Determination of HBV markers was performed using a chemiluminescence immunoassay from which 2,544 out of 45,256 adults who underwent routine health examination were tested positive for HBsAg.

[Corrigendum] Sequence analysis of the Pre‑S gene in chronic asymptomatic HBV carriers with low‑level HBsAg.

After the publication of the article, the authors realize that the grant funding number for the support that they received from Natural Science Foundation of Zhejiang Province appeared incorrectly in the Funding section of the paper: This should have been featured as grant no. LY15H200001 (i.e.

Epidemiological Study of Carbapenem-resistant .

Background: This research is aimed to study the resistance and molecular epidemiological characteristics of carbapenem-resistant (CRKP).

Methodology: 38 isolated CRKP strains were collected from clinical specimens.

Results: The resistance rates were more than 70.

Analysis of clinical characteristics and S gene sequences in chronic asymptomatic HBV carriers with low-level HBsAg.

Background: During the natural hepatitis B virus (HBV) infection process, some infected subjects are characterized by a sustained low serum HBV surface antigen (HBsAg) expression level. Most members in this population are chronic asymptomatic HBV carriers (ASCs). To elucidate the mechanism underlying low-level HBsAg expression in ASCs, we sequenced the HBV S gene in these patients to reveal specific sequence characteristics.

An epidemiological survey of HBV infection and low-level HBsAg in military camps in eastern China.

This study aimed to investigate hepatitis B virus (HBV) infection in military personnel in eastern China, which will provide a basis for the prevention of HBV infection.A total of 15,508 soldiers and 2386 officers were recruited from military camps in eastern China. The markers, deoxyribonucleic acid, serotypes, and genotypes of HBV in serum were detected and analyzed.

Genetic characteristics of the P1 coding region of Coxsackievirus A16 associated with hand, foot, and mouth disease in China.

Coxsackievirus A16 (CVA16) is one of the major etiological agents of hand, foot, and mouth disease (HFMD) in young children. To investigate the genetic characteristics of the P1 coding region gene of CVA16 associated with HFMD in China, we included the sequences of CVA16 specimens obtained from outbreak investigations and sporadic HFMD cases between 1998 and 2014 in China from GenBank, we genotyped the CVA16 sequences and analyzed P1 coding region sequences that encode structural proteins with bioinformatics software. CVA16 was classified into genotypes A and B1 based on the VP1 gene; the B1b and B1a subgenotypes were the major CVA16 strains and predominated in the coastal areas of China.

Sequence analysis of the Pre-S gene in chronic asymptomatic HBV carriers with low-level HBsAg.

In a hepatitis B virus (HBV)‑infected population, persistently low expression levels of serum HBV serum antigen (HBsAg) are present, particularly in chronic asymptomatic HBV carriers (ASCs). The present study sequenced the HBV Pre‑S gene, and aimed to elucidate its features in ASCs with low HBsAg expression compared with in the established HBV Pre‑S reference gene sequences from ASCs with high HBsAg expression. A total of 1,308 ASCs were grouped according to HBsAg serum levels (cut‑off value, 10 IU/ml), and clinical characteristics were analyzed in detail.

Establishment and evaluation of a general dissociation technique for antibodies in circulating immune complexes.

This study aimed to establish a general and efficient dissociation technique for detecting antibodies in circulating immune complexes (CICs) in serum and to evaluate its clinical application. CICs were efficiently separated from specimens using polyethylene glycol double-precipitation. The best conditions for anti-HBs dissociation from HBsAg-ICs were a pH of 1.

Clinical Characteristics and Correlation Analysis of Subjects with Chronic Hepatitis B Virus (HBV) Infection and Sustained Low Levels of Hepatitis B Surface Antigen (HBsAg).

BACKGROUND The aim of this study was to investigate the clinical characteristics of individuals with chronic hepatitis B virus (HBV) infection with persistent low levels of hepatitis B surface antigen (HBsAg) and to undertake a correlation analysis of the clinical characteristics. MATERIAL AND METHODS The study included 1,204 subjects with chronic HBV infection. Serum HBsAg, HBV envelope antigen (HBeAg), and HBV core antigen (HBcAg) levels were measured using the chemiluminescent microparticle immunoassay (CMIA) and the neutralization test.

A novel general and efficient technique for dissociating antigen in circulating immune complexes.

Circulating immune complexes (CICs) are produced during the immune response. It is more clinically important to establish a general and efficient CICs dissociation technique for the detection of antigens for CICs other than the detection of free antigens in the serum. Polyethylene glycol (PEG) two-precipitation separation and glycine-HCl as a buffer system were employed to develop a general and efficient buffer dissociation technique to separate CICs from serum and dissociate antigens from CICs.

Prevalence and drug resistance characteristics of carbapenem-resistant Enterobacteriaceae in Hangzhou, China.

With the abuse of antimicrobial agents in developing countries, increasing number of carbapenem-resistant Enterobacteriaceae (CRE) attracted considerable public concern. A retrospective study was conducted based on 242 CRE strains from a tertiary hospital in Hangzhou, China to investigate prevalence and drug resistance characteristics of CRE in southeast China. Bacterial species were identified.

Identification of proteins differentially expressed by Chlamydia trachomatis treated with chlamydiaphage capsid protein VP1 during intracellular growth.

Chlamydia trachomatis infection is one of the most prevalent sexually transmitted diseases. Our research pertains to the inhibitory effect and molecular mechanism of the chlamydiaphage capsid protein VP1 on the growth of Chlamydia trachomatis. In this research, the capsid protein VP1 of the guinea-pig conjunctivitis chlamydiaphage phiCPG1 was expressed, purified and identified, and then, it was applied to the cultivation of different serovars of Chlamydia trachomatis and Chlamydia psittaci.

Epidemiology and transmission characteristics of human adenovirus type 7 caused acute respiratory disease outbreak in military trainees in East China.

Background: Human adenovirus type 7 (HAdV7) is globally attracting great concern as its high morbidity and severity in respiratory diseases, especially in Asia.

Objective: To investigate the clinical and epidemiologic characteristics of HAdV7 infection outbreak in East China.

Methods: The clinical samples were collected from the patients of an ARD outbreak in East Chinafor the detection of causative pathogens by multiplex PCR.

Chlamydiaphage φCPG1 Capsid Protein Vp1 Inhibits Chlamydia trachomatis Growth via the Mitogen-Activated Protein Kinase Pathway.

Chlamydia trachomatis is the most common cause of curable bacterial sexually transmitted infections worldwide. Although the pathogen is well established, the pathogenic mechanisms remain unclear. Given the current challenges of antibiotic resistance and blocked processes of vaccine development, the use of a specific chlamydiaphage may be a new treatment solution.

Promoter analysis and transcriptional regulation of a Gig2 gene in grass carp (Ctenopharyngodon idella).

Grass carp reovirus (GCRV)-induced gene 2 (Gig2) is recognized as a new antiviral factor involved in response to viral infection. However, little is known about the mechanisms behind the transcriptional regulation of Gig2 when infected by virus. In this study, the upstream promoter region of grass carp (Ctenopharyngodon idella) Gig2 gene (CiGig2) was identified by homology cloning strategy.

Laboratory diagnosis of avian influenza virus H7N9 infection in a renal transplant recipient.

A renal transplant recipient who had atypical clinical manifestations, unclear epidemiological exposure history and negative results from influenza virus antigen and nucleic acid amplification in throat swab specimens was admitted into our hospital on April 17, 2013. He was finally diagnosed as avian influenzavirus H7N9 infection. Here, we reviewed the epidemiological, clinical and laboratory findings of this patient.

Gig1 and Gig2 homologs (CiGig1 and CiGig2) from grass carp (Ctenopharyngodon idella) display good antiviral activities in an IFN-independent pathway.

The virus-induced genes, Gig1 and Gig2, were identified first as IFN-stimulated genes (ISGs) from CAB cells. Previous studies suggested that Gig protein may have some potential antiviral functions. In this study, we cloned and identified the full-length cDNA sequences of Gig1 and Gig2 homologs (designated as CiGig1 and CiGig2, respectively) from grass carp (Ctenopharyngodon idella).