OBJECTIVETo test the differential Estrogen Receptor (ER) beta levels of mitochondrial proteome of mandibular condylar chondrocyte in the rat model of temporomandibular joints osteoarthritis (TMJOA).

METHODS25 SD rats were divided into experimental group (15 rats) and control group (10 rats) randomly. TMJOA models were created in left sides of TMJ of 15 SD rats by the partial resection of the articular disc. The experimental rats were killed 3 months after operation. After the chondrocytes culture, Immunohistochemistry, semiquantitative RT-PCR and Western blot were used to test the differential ER beta expression levels in mitochondrial proteome of mandibular condylar chondrocytes. Mitochondrial proteins identification was carried out by two-dimensional electrophoresis and peptide mass fingerprint (PMF).

RESULTSPMF showed that one of the differential proteins was ERP. Immunohistochemistry and Western blot results suggested the significant difference of ERbeta protein levels between operation-treated and control group. The operation-treated group had lower ERbeta levels (P < 0.01).

CONCLUSIONIt has been demonstrated that ERbeta protein levels were decreased in mitochondria of TMJOA mandibular condylar chondrocytes, which suggests a role for mitochondrial ERbeta in the effects on TMJOA. The pathological role of ERbeta in the regulation of TMJOA progress remains to be elucidated.

Animals ; Cartilage, Articular ; Chondrocytes ; Estrogen Receptor beta ; Immunohistochemistry ; Mandibular Condyle ; Osteoarthritis ; Rats ; Rats, Sprague-Dawley ; Temporomandibular Joint

Objective To explore the causes of dengue fever resurgence in Guangxi, and to analyze the risk factors of dengue fever. Methods The descriptive epidemiological analysis was conduced based on the dengue fever data reported from 2006 to 2015, and the surveillance results of aedes and antibody levels in health population from 2013 to 2015 in Guangxi. Results Before 2013, dengue fever was imported from foreign country in Guangxi, accounting for 95.35％(42/45), and 75.71％of the imported cases was imported from Southeast Asia. The local outbreak of dengue fever was happened in 2014, accounted for 94.02％(849/903) of the total number of 10 years. From onset to diagnosis, Guangxi dengue fever cases need 0-70 d (median time interval is 6 d). Cases were reported year-round, but the peak season for the onset of dengue fever was from September to November, accounting for 96.46％of all cases (871/903). The number of cases reported in Nanning was the most (83.37％), followed by Wuzhou city (7.44％) and Guilin city (4.81％), and all the three cities had dengue fever outbreaks. The cases were mainly commercial service staff (27.80％) and houseworkers and unemployed people (18.16％). Results of aedes monitoring showed that the density of aedes was high in Guangxi. In more than 50％ of the monitoring seasons the breteau index (BI) stayed greater than 20. However, the antibody positive rate was only 3％ in the healthy residents of Guangxi. Conclusion The risk of dengue fever is high in Guangxi. Therefore, it is essential to emphasizing idea of prevention and control, strengthening immigration surveillance, improving diagnosis ability, enhancing public health education, and expanding monitoring range.

To analyze the genetic characteristics of echovirus 6 (E6) isolated from meningitis and encephalitis cases in Shandong Province, China, we collected cerebrospinal fluid samples from meningitis and encephalitis cases in Shandong Province from 2007 to 2012 for virus isolation. Viral RNAs were extracted from positive isolates, and complete VP1 coding regions were amplified by RT-PCR and sequenced. Homology comparison and phylogenetic analysis were performed. Six isolates were identified as E6 by microneutralization assay and molecular typing. The homology analysis showed that the six isolates had 78. 6%-99. 8% nucleotide and 95. 5%-100. 0% amino acid identities with each other, as well as 76. 9%-78. 4% nucleotide and 92. 3%-95. 1% amino acid identities with the prototype strain (D' Amori). The phylogenetic analysis based on the integrated VP1 sequences indicated that all Shandong E6 isolates could be separated into four clusters, designated as A, B, C, and D. The six E6 isolates belonged to clusters A, B, and D. Our study reveals high genetic differences between Shandong E6 isolates and suggests different transmission lineages of E6 co-circulated in Shandong Province.
Amino Acid Sequence ; Child ; Child, Preschool ; China ; epidemiology ; Echovirus 6, Human ; classification ; genetics ; isolation & purification ; Encephalitis ; epidemiology ; virology ; Female ; Genetic Variation ; Humans ; Infant ; Male ; Meningitis ; epidemiology ; virology ; Molecular Sequence Data ; Phylogeny ; Sequence Alignment ; Viral Proteins ; chemistry ; genetics

BACKGROUNDTo find out the timing of serologic responses after illness onset and distribution of IgG antibody to SARS-CoV in SARS cases of transmission chain or non-transmission chain.

METHODSThe IgG and IgM antibodies to SARS-CoV were tested by indirect ELISA in serum samples from 301 clinically diagnosed SARS cases.

RESULTSTotally 158 SARS cases were involved in 15 chains of transmission. The positive rates of SARS-CoV IgG in those chains were 85.70%-100.00% and the overall rate was 94.30% (149/158). The chain of transmission could spread to four generations, but the SARS cases were reduced with increase of generations. There was no significant difference among positive rates of SARS-CoV IgG for generations, Chi square=5.11, P greater than 0.05. The positive rate of SARS-CoV IgG in cases who were not in chain of transmission was 12.59%(18/143) which was statistically significantly different from that of cases in chain of transmission, Chi square=199.64, P less than 0.001. During days 0-7,8-14,15-21,22-30 after onset, the cumulated positive rate of SARS-CoV IgG was 16.67%, 40.00%, 70.00% and 93.10%, respectively, then was kept at the level above 90% and lasted for 217 days. The cumulated positive rate of SARS-CoV IgM during days 0-7 after onset was the same to that of IgG. During days 8-14, 55.17% of cases had seroconversion for IgM which reached a peak (86.96%) during days 21-30. Then the rate rapidly declined.

CONCLUSIONMore than 94% of cases with SARS could produce IgG antibody when they were infected by SARS-CoV. Detecting SARS-CoV IgG could provide a diagnostic evidence for case confirmation. SARS-CoV IgG appeared as early as 7 days after onset and reached the peak at about weeks 4. Then the high rate of antibody was maintained for more than 6 months.

Antibodies, Viral ; blood ; Disease Transmission, Infectious ; Enzyme-Linked Immunosorbent Assay ; Humans ; Immunoglobulin G ; blood ; Immunoglobulin M ; blood ; SARS Virus ; immunology ; Severe Acute Respiratory Syndrome ; immunology ; transmission

Objective To analyze the evolution and genetic characterization of echovirus 11 (Echo11 ) from the acute flaccid paralysis (AFP) cases in Shandong province. Methods Isolation of Enterovirus was performed from stool samples of AFP cases from 1994 to 2009. All positive strains were sero-typed by neutralization test. Entire VP1 coding region from 27 strains typed as Echo 11 was amplified by reverse transcription-polymerase chain reaction(RT-PCR), and subsequently phylogenetic analyse on VP1 sequences from these strains and others published in GenBank were conducted. Results From 1994 to 2009, altogether 915 non-polio enterovirus (NPEV) strains were isolated with 79(8.6% ) isolates serotyped as Echo11. There were 876 nucleotides (nt) in the complete VP1 genes, encoding 292 amino acids (aa). The nt identities were 76.4%-100.0% among those Echo11 Shandong strains with the aa identities as 91.4% -100.0%. The nt and aa identities were 77.7%-80.7% and 90.7%-94.8% between Shandong strains and prototype strains, respectively.Conclusion All Echo11 strains could be divided into four genotypes. Shandong strains that forming three (A1, A2 and C1) new sub-genotypes, with every sub-genotype had several brands.Sub-genotype A1 appeared to be the lately circulating one.

OBJECTIVETo investigate the predictive value of HER-2 and ER expression for chemosensitivity of taxane in the treatment of advanced breast cancer.

METHODSOf 268 advanced breast cancer patients treated: 71 were by paclitaxel alone, 32 by docetaxel alone, 110 by paclitaxel combined with anthracylines or gemcitabine or platins and 55 by docetaxel-based combinations. HER-2 and ER expression of all patients treated by taxane underwent immunohistochemical (IHC) assay.

RESULTSUnivariate analysis showed: the response rate (RR) in HER-2 overexpression group was 56.7%, and in HER-2 weak expression group 33.3% (P = 0.003). The response rate in ER positive group and ER negative group was 33.3% and 48.9%, respectively, with a significant difference (P = 0.015). The RR was 67.6% in ER negative but HER-2 overexpression group. However, in ER positive but HER-2 weak expression group and the other groups, the RR were around 35% (P < 0. 01). Multivariate analysis showed that overexpression of HER-2 was the only significant factor to predict the chemosensitivity of taxane (P = 0. 007), but the ER, Karnofsky performance score (KPS), anthracylines, metastatic sites were not the statistically significant chemo-sensitivity predictive factors for taxane.

CONCLUSIONER negative and/or HER-2 overexpression, especially latter, may be associated with good response in advanced breast cancers treated by taxane.

Antineoplastic Agents, Phytogenic ; therapeutic use ; Breast Neoplasms ; drug therapy ; metabolism ; pathology ; Female ; Humans ; Immunohistochemistry ; Multivariate Analysis ; Neoplasm Staging ; Paclitaxel ; therapeutic use ; Predictive Value of Tests ; Prognosis ; Receptor, ErbB-2 ; metabolism ; Receptors, Estrogen ; metabolism ; Remission Induction ; Retrospective Studies ; Taxoids ; therapeutic use

In previous study, molecular typing method was performed to identify human enteroviruses (HEVs) isolates collected from acute flaccid paralysis (AFP) cases from 1989 to 2011 and hand, foot and mouth disease (HFMD) patients, and 8 HEV-A serotypes were identified. In order to explore the genotypes and molecular evolution characteristics of HEV-A in Shandong province, viral RNA of the remaining isolates was extracted and entire VP1 coding region was amplified, sequenced and identified with HEV-A primers. Another 7 HEV-A Shandong isolates were obtained, and identified as Coxsackievirus A (CVA) 2, 6, 8 and 12 by molecular typing method. Homologous comparison showed that the nucleotide acid identities of Shandong strains ranged from 80.8% to 85.0% with prototype strains. Phylogenetic analysis based on VP1 sequences indicated that CVA8 and CVA12 strains were genetically related with domestic strains. However, CVA2 and CVA6 strains were distinct from both domestic and foreign strains. In addition, multiple transmission chains of CVA2 and CVA6 existed within Shandong province. So far, a total of 12 HEV-A serotypes were identified in Shandong province. This study enriched the distribution of serotypes and genetic evolution characteristics of HEV-A isolates in Shandong, and revealed different transmission chains of CVA2, 6, 8, 12 serotypes co-circulated in Shandong province or in China.
Child, Preschool ; China ; Enterovirus A, Human ; classification ; genetics ; isolation & purification ; Enterovirus Infections ; virology ; Evolution, Molecular ; Female ; Humans ; Infant ; Male ; Molecular Sequence Data ; Phylogeny

Molecular typing was conducted for three human enteroviruses (HEV) isolated from acute flaccid paralysis (AFP) cases in Shandong province, China. RNAs from virus supernatants were extracted and complete VP1 genes were amplified by RT-PCR and sequenced. Genotypes of these isolates were identified as HEV type 73, 75 and 97, respectively by BLAST program. Homology and phylogenetic tree analyses were performed. Sequence analysis of VP1 gene showed significant variation compared with prototype strains. This study presents the genetic characteristics of HEV 73, 75 and 97 of specie B in Shandong Province, and the first report of HEV97 in China.
Base Sequence ; Cell Line ; China ; Enterovirus ; classification ; genetics ; isolation & purification ; Enterovirus Infections ; virology ; Humans ; Molecular Sequence Data ; Paralysis ; virology ; Phylogeny ; Viral Proteins ; genetics

In order to study the genotypes and molecular evolution of human enterovirus (HEV) A species in Shandong Province, Stool samples were collected from AFP and HFMD patients in Shandong Province and virus isolation was performed. Reverse Transcription-Polymerase Chain Reactions (RT-PCR) specific for EV71 and CVA16 were performed with the virus isolates from HFMD patients. Positive isolates were selected for entire VP1 coding gene amplification and sequencing. Isolates with negative PCR results and isolates from AFP patients were selected for entire VP1 coding gene amplification and sequencing using primers specific for HEV A species. Phylogenetic tree was constructed among these VP1 nucleotide sequences and of other strains. Altogether 293 strains classified into 8 genotypes were isolated. The homologous comparison and phylogenetic analysis showed Shandong strains were distinct with prototype strains in every genotype. This report presents an overview of HEV-A in Shandong Province.
Cell Line ; China ; Enterovirus A, Human ; classification ; genetics ; isolation & purification ; Enterovirus Infections ; virology ; Feces ; virology ; Genotype ; Hand, Foot and Mouth Disease ; virology ; Humans ; Molecular Sequence Data ; Paraplegia ; virology ; Phylogeny