Adult ; Aged ; Aged, 80 and over ; Colles' Fracture ; therapy ; Combined Modality Therapy ; External Fixators ; Female ; Humans ; Male ; Manipulation, Orthopedic ; methods ; Middle Aged

OBJECTIVETo seek a rapid, simple, but effective inquiry method for screening high risk population challenged by schistosomiasis.

METHODSTwo embankment collapsed villages were selected in schistosomiasis epidemic area in Dongting Lake. Information on water exposure was collected through a retrospective study. Data was analyzed by stepwise discriminant analysis.

RESULTSA Fisher's function was established by stepwise discriminant analysis which including 5 variables out of 18. Two hundred and forty-six individuals were discriminated by the function with accuracy, sensitivity and specificity of predicting their current infection status with the results of 87.4%, 84.1% and 89.0% respectively.

CONCLUSIONThe inquiry method might serve as simple, rapid, economic and effective tool for diagnosis in screening high risk population challenged by schistosomiasis in lake communities.

Adult ; China ; epidemiology ; Disasters ; Discriminant Analysis ; Female ; Humans ; Male ; Mass Screening ; methods ; Multivariate Analysis ; Retrospective Studies ; Risk Assessment ; Rural Health ; Sampling Studies ; Schistosomiasis japonica ; epidemiology ; prevention & control ; Sensitivity and Specificity ; Surveys and Questionnaires

BACKGROUNDPulmonary embolism (PE) is often mistaken as acute coronary syndromes (ACS) because of the considerable overlap in their clinical features. We evaluated the factors causing misdiagnosis of PE as ACS and factors that differentiate PE from ACS to improve the diagnosis efficacy of PE.

METHODSThe medical records of 22 consecutive PE patients, between 2001 and 2010, who were initially suspected of ACS were retrieved. ACS was ruled out by coronary artery angiography before a definite diagnosis of PE was given. Twenty-two contemporary cases of ACS matched by age and sex were recruited as controls. Clinical manifestations, electrocardiograms (ECG), and biomarkers of these patients were reviewed retrospectively. The factors causing misdiagnosis of PE as ACS and factors differentiating PE from ACS were evaluated.

RESULTSWe found two leading causes of misdiagnosis of PE as ACS. One is that PE can resemble ACS in several clinical aspects (symptoms and signs, ECG findings, plasma cardiac troponin I, and D-dimer). The other is the insufficient recognition of PE by clinicians. Risk factors for venous thromboembolism (VTE), especially deep venous thrombosis (DVT), together with signs of PE, such as unexplained dyspnea or hypoxemia, and right ventricular pressure overload on ECGs are valuable in differentiating the two diseases.

CONCLUSIONSDifferentiation between PE and ACS is sometimes challenging. Adequate awareness of the risk factors for VTE and the signs of PE are crucial in the diagnosis of PE.

Acute Coronary Syndrome ; diagnostic imaging ; Adult ; Aged ; Coronary Angiography ; Electrocardiography ; Female ; Humans ; Male ; Middle Aged ; Pulmonary Embolism ; diagnostic imaging ; Retrospective Studies

OBJECTIVETo evaluate clinical effects of knee osteoarthritis with the treatment of the isometric quadriceps femoris contraction exercises, which aims at establishing the exercise prescription of knee osteoarthritis,and promoting its clinical application.

METHODSFrom January 2008 to September 2010, 120 patients with knee osteoarthritis were divided into two groups according to visiting sequence, including 39 males and 81 females, ranging in age from 40 to 85 years, with an average of 62.50 years, the disease course ranged from 1 month to 30 years. There were 60 patients in the therapeutic group, including 21 males and 39 females, ranging in age from 40 to 85 years, with an average of (62.27 +/- 8.99) years, the disease course ranged from 2 months to 30 years; and the patients were treated with intra-articular injection of sodium hyaluronate and isometric quadriceps femoris contraction exercises for treatment. There were 60 patients in the control group; including 18 males and 42 females, ranging in age from 41 to 80 years, with an average of (62.72 +/- 8.34) years, the disease course ranged from 1 month to 30 years; and the patients were treated with conventional intra-articular injection of sodium hyaluronate. The index such as the pains,functions and articular dropsy of the knees were observed and the clinical effects were compared respectively.

RESULTSAll the patients were followed up, and the duration ranged from 1 to 3 years, with an average of 18 months. According to standard of JOA about evaluating the therapeutic effects of knee osteoarthritis: in the therapeutic group, 12 patients got an excellent result, 33 good, 14 poor and 1 bad; and in the control group, 7 patients got an excellent result, 14 good, 31 poor and 8 bad. The clinical results of therapeutic group was better than that of control group. There were 7 recurrent cases in the therapeutic group and 31 recurrent cases in the control group; the recurrence rate in therapeutic group was lower than that of control group.

CONCLUSIONThe isometric quadriceps femoris contraction exercises has obvious effect in alleviating the symptoms, improving joint function, strengthening the joint stability and slowing down joint degeneration process for the treatment of knee osteoarthritis, which has a good effect in the long-term clinical effects.

Adult ; Aged ; Aged, 80 and over ; Case-Control Studies ; Exercise Therapy ; Female ; Humans ; Hyaluronic Acid ; administration & dosage ; Isometric Contraction ; Male ; Middle Aged ; Osteoarthritis, Knee ; therapy

Objective To compare the differences in the hypertension prevalence among children aged 7-12 in Guangzhou based on different references of hypertension. Methods A total of 7698 children aged 7-12 years old in Guangzhou were recruited by stratified cluster random sampling method. Demographic information such as gender and age was collected by questionnaire. Children’s height, weight, and blood pressure were objectively measured. There were five references for diagnosing children’s hypertension: Mi 2010, Mi 2017, Ma 2017, America 2004, and America 2017 reference. Results Based on the references above, the prevalence of hypertension for children aged 7-12 in Guangzhou reached a very high level. The prevalence of hypertension, high systolic blood pressure (SBP) and high diastolic blood pressure (DBP) based on Mi 2017 reference were all higher than those based on Mi 2010 reference, but both of them were distinctly higher than Ma 2017 reference. Compared with Mi 2010 reference, the agreement of diagnosis of high SBP and high DBP were both higher for Mi 2017 than those for Ma 2017. The agreement of high SBP was higher between Mi 2017 and America 2017 than that between Ma 2017 and America 2017 (Kappa: 0.846 vs. 0.727). Conclusion The prevalence of hypertension in children aged 7-12 in Guangzhou reachs a very high level. The prevalence of hypertension based on Mi 2017 reference is the highest and follows with America 2017 reference, and the agreement between them is excellent. Compared with Mi 2010 or America 2017 reference, the agreement for Ma 2017 is lower than that for Mi 2017 reference, respectively.

This study aimed to assess the relationship of OAS2 rs739901 5'-flanking C/A polymorphisms with the susceptibility to Enterovirus-71 (EV71) infection.We investigated 294 hand-foot-mouth disease (HFMD) Chinese children with EV71 infection (165 mild cases and 129 encephalitis cases).The improved multiplex ligation detection reaction (iMLDR) technique was used to test the genotypes.In EV71-infected patients,the CA genotype distribution (P=0.007),A allele frequency (OR 1.32,95％ CI 1.0-1.7,P=0.034)and CA+AA carriage frequency (P=0.003) of OAS2 rs739901 5'-flanking were obviously elevated as compared with controls,but there were no statistically significant differences between mild cases and encephalitis cases.In EV71-infected patients,the counts of white blood cells (P=0.034) and blood glucose concentrations (P=0.042) were raised in A carriers (CA+AA).Among different genotypes of encephalitis cases,the contents of cerebrospinal fluid (CSF) showed no significant differences.IFN-γ levels in EV71-infected patients were higher than those in controls (mild group vs.control group,P＜0.01;encephalitis group vs.control group,P＜0.001).In encephalitis cases,IFN-γ levels were reduced (P＜0.05) in A carriers compared to CC genotype,however,there were no significant differences between genotypes CA and AA (P=0.226).These findings suggest that OAS2 rs739901 5'-flanking C/A genetic polymorphisms involve the susceptibility to EV71 infection,and A allele might be a risk factor of the susceptibility to EV-71 infection.

OBJECTIVETo identify differentially expressed genes in recurrent nasopharyngeal carcinoma (rNPC) by DNA microarrays, and analyze chromosomal localizations and molecular function by bioinformatics.

METHODSThe primary nasopharyngeal carcinoma (pNPC) tissue samples and rNPC tissue samples were selected, and Affymetrix Gene1.0 ST gene chips were used to identify differential expressed genes in rNPC, and the bioinformatics was used to analyze their chromosomal localizations as well as molecular functions.

RESULTSA total of 44 genes were identified to be differential expressed in rNPC. Thirty-six genes were down regulated, 8 genes were up regulated. Functional classification of down-regulation genes showed that most genes (10 genes, 27.8%) belonged to the enzyme activity genes, followed by calcium ion binding genes (7 genes, 19.4%), protein binding genes (5 genes, 13.9%), receptor activity genes (4 genes, 11.1%), ATP binding genes (2 genes, 5.6%), transcription factor genes (2 genes, 5.6%), extracellular matrix binding and growth factor binding have 1 gene respectively (each accounted for 2.8%). In addition, the functions of 4 genes (11.1%) were unknown. Functional classification of up-regulation genes showed most genes (3 genes, 37.5%) were unknown, followed enzyme activity genes (2 genes, 25.0%), receptor activity, calcium ion binding and voltage-gated ion channel activity genes have 1 genes respectively (each accounted for 12.5%). These genes were localized randomly on the most the chromosomes, with a majority of them localized on chromosomes 1, 17. Chromosome 1 contained the most differentially expressed genes (10, 22.7%), followed by chromosomes 17 (5, 11.3%).

CONCLUSIONSThe differential expressed genes in rNPC were supposed to be randomly distributed on most chromosomes, but the majorities were found on chromosomes 1, 17. Abnormality in three groups of genes, including in enzyme activity, calcium ion binding and protein binding associate genes, might play important roles in rNPC. Those genes need to be further studied.

Adult ; Aged ; Carcinoma ; Carcinoma, Squamous Cell ; genetics ; pathology ; Female ; Gene Expression Profiling ; Gene Expression Regulation, Neoplastic ; Genes, Tumor Suppressor ; Humans ; Male ; Middle Aged ; Nasopharyngeal Neoplasms ; genetics ; pathology ; Neoplasm Recurrence, Local ; genetics ; Oligonucleotide Array Sequence Analysis

OBJECTIVETo establish the methods of calculating and analyzing the multi-coefficient of variation significance test for the toxicology study.

METHODSThe paper aimed to confirm the significance level with the method of Bonferroni and then compared the methods of calculating and analyzing of the experiment groups with the control group respectively.

RESULTSThe significance level of multi-coefficient of variation significance test was confirmed as alpha1=0.0167. Compared with the control groups, the activity of ALT in serum both in 30 mg/kg and 60 mg/kg groups did not change in the average significance test, which was not statistically significant (P>0.05), while it changed in the variation significance test, which was of statistical significance (P<0.0167). The activity of AST in serum in 60 mg/kg group did not change in the average significance test (P>0.05), while it changed in the variation significance test (P<0.0167).

CONCLUSIONThe complete changes of the indexes can only be shown by use of both the average significance test and the variation significance test together.

Alanine Transaminase ; blood ; Animals ; Aspartate Aminotransferases ; blood ; Disease Models, Animal ; Female ; Lead Poisoning ; enzymology ; Rats ; Rats, Wistar ; Statistical Distributions

OBJECTIVETo investigate peripheral blood monocyte (PBMC) gene expression profile in patients with fulminant hepatic failure (FHF) by cDNA microarray.

METHODSMicroarrays consisting of 8,192 human cDNAs and labelled cDNAs prepared from PBMC in both 10 FHF patients and 10 asymtomatic surface antigen carriers (ASC) were applied to analyze gene expression. Relative ratios of gene expression in individuals were obtained by comparing the hybridization results, by GenePix 4000B scanning and by ImaGene3.0 software analysis, of Cy5-labelled cDNA from FHF patients with those of Cy3-labelled cDNA from ASC.

RESULTS249 genes out of 8,192 were identified differently, at least two times. Most of the genes (79%) involved in cell signaling transduction, cell cycles, metabolism, inflammatory response and apoptosis, whose mRNAs were differently regulated.

CONCLUSIONSThese results suggest that HBV infection alters a broad range of cellular genes expression during developing into FHF and provide a framework for future functional study on the genes expressed differently.

DNA, Complementary ; genetics ; Female ; Gene Expression ; Gene Expression Profiling ; Hepatitis B ; genetics ; pathology ; Hepatitis B, Chronic ; genetics ; pathology ; Humans ; Leukocytes, Mononuclear ; metabolism ; Male ; Oligonucleotide Array Sequence Analysis

BACKGROUNDSevere acute respiratory syndrome coronavirus (SARS-CoV) is a newly emerging virus that gives rise to SARS patients with high rates of infectivity and fatality. To study the humoral immune responses to SARS-CoV, the authors evaluated IgG and IgM specific antibodies in patients' sera.

METHODSTwo methods, enzyme-linked immunosorbent assay (ELISA) and indirect immunofluorescent assay (IFA), were used to detect specific serum IgG and IgM against SARS-CoV in 98 SARS patients and 250 controls consisting of patients with pneumonia, health-care professionals and healthy subjects. The serum antibody profiles were investigated at different times over one and a half years in 18 of the SARS patients.

RESULTSThe sensitivity and specificity of ELISA for detecting IgG against SARS-CoV were 100.0% and 97.2% and for IgM 89.8% and 97.6% respectively; the figures using IFA for IgG were 100.0% and 100.0% and for IgM 81.8% and 100.0% respectively. During the first seven days of the antibodies trace test, no IgG and IgM were detected, but on day 15, IgG response increased dramatically, reaching a peak on day 60, remaining high up to day 180 and decreasing gradually until day 540. On day 15, IgM was detected, rapidly reached a peak, then declined gradually until day 180 when IgM was undetectable.

CONCLUSIONThe detection of antibodies against SARS virus is helpful in the clinical diagnosis of SARS.

Adult ; Aged ; Antibodies, Viral ; blood ; Enzyme-Linked Immunosorbent Assay ; Female ; Fluorescent Antibody Technique, Indirect ; Humans ; Immunoglobulin G ; blood ; Immunoglobulin M ; blood ; Male ; Middle Aged ; SARS Virus ; immunology ; Severe Acute Respiratory Syndrome ; immunology ; T-Lymphocytes, Cytotoxic ; immunology