KCNQ Channels in the Mesolimbic Reward Circuit Regulate Nociception in Chronic Pain in Mice / 神经科学通报·英文版

Mesocorticolimbic dopaminergic (DA) neurons have been implicated in regulating nociception in chronic pain, yet the mechanisms are barely understood. Here, we found that chronic constructive injury (CCI) in mice increased the firing activity and decreased the KCNQ channel-mediated M-currents in ventral tegmental area (VTA) DA neurons projecting to the nucleus accumbens (NAc). Chemogenetic inhibition of the VTA-to-NAc DA neurons alleviated CCI-induced thermal nociception. Opposite changes in the firing activity and M-currents were recorded in VTA DA neurons projecting to the medial prefrontal cortex (mPFC) but did not affect nociception. In addition, intra-VTA injection of retigabine, a KCNQ opener, while reversing the changes of the VTA-to-NAc DA neurons, alleviated CCI-induced nociception, and this was abolished by injecting exogenous BDNF into the NAc. Taken together, these findings highlight a vital role of KCNQ channel-mediated modulation of mesolimbic DA activity in regulating thermal nociception in the chronic pain state.

Expression Level of MiR-146a in Acute Myeloid Leukemia Patients and Its Clinical Significance / 中国实验血液学杂志

OBJECTIVE@#To detect the expression of miR-146a in patients with AML, and to evaluate the relationship between miR-146a expression level and clinical characteristics, treatment response, EFS and OS.@*METHODS@#154 patients with newly diagnosed AML were enrolled in AML group, 50 controls (patients with thrombocytopenic purpura or voluntary donor of bone marrow) were enrolled in control group. The miR-146a expression levels in bone marrow mononuclear cells was detected by RT-PCR between 2 group. AML patients were treated with chemotherapeutic drugs, and their clinical response and survivals were assessed.@*RESULTS@#The expression level of MiR-146a in AML group was significantly lower than that in control group. The ROC showed that miR-146a could distinguish the patients in AML and control group better (area under curve 0.819 (95%CI: 0.761-0.877). Meanwhile, the proportion of good and moderate good prognosis (P＜0.001), proportion of WBC count ≤15.2×10/L (P＜0.05), CR rate (P＜0.05), EFS (P＜0.01) and OS (P＜0.01) in patients with high miR-146a expression were higher than those in patients with low miR-146a expression. Cox's model showed that miR-146a expression level positively realated with incressed EFS and OS.@*CONCLUSION@#MiR-146a is downregulated in AML patients, which might be served as a biomarker for predicting risk and prognosis of AML patients.

Establishment and exercise of a rapid response team for obstetrics / 中国实用妇科与产科杂志

Because of the mutation,variability and variability of obstetric conditions,it is particularly important to establish a rapid response team in the maternity department that can effectively deal withmaternal conditions at an early stage of development,rather than waiting for their deterioration before resuscitating them.The establishment of obstetric RRT requires the support of hospitals,obstetrics and other departments.Training,drills,and assessments after the completion of the RRT also need to be carried out regularly,so that the RRT team continues to be improved.

Bioinformatics analysis of programmed cell death ligand 1 co-expression genes and their regulatory network in head and neck squamous cell carcinoma / 华西口腔医学杂志

OBJECTIVE@#This study aimed to construct a network of programmed celldeath ligand 1 (PD-L1) co-expression genes and screen potential biomarkers for PD-L1 expression in head and neck squamous cell carcinoma (HNSCC) by bioinformatics analysis. Moreover, the genes and pathways participating in PD-L1 and regulating the tumor immune status were determined.@*METHODS@#The HNSCC transcriptomic dataset in TCGA was selected to retrieve gene sets on the cBioPortal platform, where PD-L1 co-expressional genes were acquired. With these genes, GO-BP, KEGG, and string analyses were performed in R clusterProfiler. Cytoscape was used for network analysis and hub gene screening.@*RESULTS@#A total of 117 co-expression genes were obtained, most of which were enriched in immune regulation and response to viral processes. Node degree analysis indicated that STAT1, IFNG, CXCL10, CCR5, FCGR3A, CXCL9, GBP5, CD86, GZMB, IRF1 were the highest connected genes and functioned as hub genes. Survival analysis of these hub genes resulted in CCR5, CXCL9, and GZMB as the prognostic biomarkers for patients with HNSCC, all of which were involved in immune regulation and their expression levels were related to PD-L1 (Pearson correlation coefficient was 0.30, 0.35, 0.39; P<0.01). High expression levels of these three hub genes were protective factors in patients with HNSCC.@*CONCLUSIONS@#PD-L1 co-expression hub genes are related to immunity, among which CCR5, CXCL9, and GZMB are prognostic markers with the possibility to be involved in programmed cell death protein 1 (PD-1)/PD-L1-induced tumor immune escape. These genes provide new clues to study the mechanism and precision target medicine of PD-1/PD-L1 in HNSCC.

Congenital infiltrating lipomatosis of face with seizures: a case report / 华西口腔医学杂志

Congenital infiltrating lipomatosis of the face is a rare disorder resulting from overgrowth of adipose tissues. This condition presents gradually with swelling along with age, hypertrophy of adjacent bones, and tooth abnormalities. This study reports a case of congenital infiltrating lipomatosis of face with seizures and reviews relevant literature on the etiology, clinical symptom, diagnosis, and treatment of this condition.

Regulation of c1orf109 gene by transcription factor MAZ in vitro / 中国病理生理杂志

AIM:To study the regulation of human chromosome 1 open reading frame 109(c1orf109)gene by transcription factor Myc-associated zinc-finger protein(MAZ)in vitro.METHODS:In vitro study,electrophoretic mobili-ty shift assay was performed to screen the binding sites of MAZ in the promoter region of c1orf109 gene.The HeLa cells were co-transfected with the enhanced green fluorescent protein reporter vector driven by c1orf109 promoter,and MAZ and transcription factor specificity protein 1(Sp1)expression plasmids.After 24 h,the transcriptional expression of c1orf109 gene in the co-transfected cells was determined by confocal scanning microscopy and flow cytometry.RESULTS:The c1orf109 promoter could bind to MAZ ,and shared the binding sites with Sp 1.MAZ and Sp1 both inhibited the transcrip-tional expression of c1orf109 gene and the inhibition effect of Sp1 was greater than MAZ(P<0.05).CONCLUSION:Both MAZ and Sp1 regulate the expression of c1orf109 gene in physiological and pathological conditions ,and this regulation is redundancy with the same direction.The existence of redundancy transcriptional regulation manner of this gene suggests that precise regulation of c1orf109 gene is vital important for cell biological processing.

Magnetic Resonance Imaging Features and Their Pathological Mechanisms of Hashimoto's Encephalopathy / 中国医学科学院学报

Objective To analyze the routine and functional magnetic resonance imaging(MRI) features and their potential pathological mechanisms of Hashimoto's encephalopathy(HE). Methods The clinical data and routine and functional MRI images of 30 HE patients who were treated in our center from January 2010 to April 2017 were retrospectively reviewed. Among them,15 patients were examined with contrast-enhanced MRI,16 with diffusion-weighed imaging(DWI),8 with magnetic resonance angiography,2 with magnetic resonance spectroscopy,and 1 with both arterial spin labeled perfusion imaging and diffusion tensor imaging. Seven patients had consecutive clinical and imaging data. The distribution,MRI signals,and functional MRI features of HE were analyzed. Results Among 30 HE patients,routine MRI showed negative results in 8 cases and abnormal findings in 22 cases. Among 22 abnormal cases,9 were characterized by small cerebral vascular disease and 13 had non-specific abnormalities;of these 13 cases,12 had lesions mainly located at the supratentorial white matter,11 had multiple lesions,and 2 had lesions complicated with cerebellum atrophy. The lesions were focal or confluent,punctate or small patchy,showing abnormal signal intensity with iso-or hypo-intensity on T1-weighed imaging,hyper-intensity on both T2-weighed imaging and fluid-attenuated inversion recovery. Most of the lesions had no enhancement(12/15). Among 7 cases with abnormalities on DWI,hyper-intensity on DWI and hypo-intensity on apparent diffusion coefficient were seen in 3 sudden acute cases and hyper-intensity on DWI and increased apparent diffusion coefficient value in 4 sub-acute or slow onset cases. Three cases showed localized intracranial artery stenosis. In 2 cases,magnetic resonance spectroscopy revealed significant lower N-acetylaspartate peak,higher choline peak,and visible lactate peak or lipid peak. Of 7 cases with follow-up data,3 cases had no change,4 cases had changes including softening lesions(2/4),remitted and relapsed lesions(1/4),and rapid progression of brain atrophy with negative finding on the initial MRI(1/4). Conclusion Routine MRI combined with functional imaging can show the features of HE from different perspectives. Routine MRI shows multifocal or confluent lesions in the white matter,mostly without enhancement,while functional imaging may reveal pathological characteristics of different phases of acute or chronic ischemia and demyelinating changes of HE. Combined with clinical data,MRI can differentiate HE from other diseases based on routine and functional MRI appearances.

Association between Prevalence of Thyroid Nodule and Metabolic Parameters in Population over 40 / 中山大学学报(医学科学版)

[Objective] The aim of our study is to examine nodule prevalence in a population over 40 years old in order to explore the relation between prevalence of thyroid nodules and metabolic parameters.[Methods] A total of 1875 individuals who were over 40 years of age were received the questionnaire and underwent thyroid ultrasonography examinations.Height,weight,waist circumference,blood pressure were measured.Levels of fasting blood glucose,fasting serum insulin,glycated hemoglobin,blood lipids,thyroid stimulating hormone and free T4 were detected.Body mass index (BMI) and homeostasis model assessment-insulin resistance (HOMA-IR) were calculated.[Result] The study included a total of 1875 subjects (513 men and 1362 women).The age of subjects were between 41 and 113 years old,and the mean age was 57.4±7.1 years old.The prevalence of thyroid nodules was 51.2％,and the prevalence of thyroid nodules in women was significantly higher than that in men (53.4％ vs.45.2％,P=0.002).The prevalence of thyroid nodules was significantly higher in subjects with hypertriglyceridemia (59.2％ vs.49.5％,P=0.009) and hypertension (56.5％ vs.47.8％,P＜ 0.001).Result of multivariate binary logistic regression revealed that hypertension (OR=1.405,P=0.002),female sex (OR=1.490,P=0.001),older age (OR=1.028,P＜0.001),and hypertriglyceridemia (OR=1.589,P=0.005) were independent risk factors for thyroid nodules.The prevalence of thyroid nodules increased along with age,systolic blood pressure and serum triglyceride level.[Conclusion] The prevalence of thyroid nodules and metabolism-related diseases were high in population over 40 years old.After adjusted for age and sex,hypertriglyceridemia and hypertension were possible independent risk factors for thyroid nodules especially in women.In general,hypertriglyceridemia and hypertension might play an important role in the pathological process of thyroid nodules.

Retinal Vascular Morphological Changes in Patients with Extremely Severe Obstructive Sleep Apnea Syndrome / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Obstructive sleep apnea syndrome (OSAS) has been shown to generate hypertension and endothelial dysfunction. Retinal vessel is the only vessel that can be observed directly and noninvasively; retinal vascular abnormalities can serve as a predictive marker for the occurrence, clinical course, and prognosis of cardiovascular and cerebrovascular diseases. The objective of this study was to identify the effect of OSAS severity on the morphological changes of retinal vessels.</p><p><b>METHODS</b>Adult patients complained of snoring were included in this study. The patients' general information, polysomnography, and fundus photography parameters including central retinal artery equivalent (CRAE), central retinal vein equivalent (CRVE), and arteriole-to-venule ratio (AVR) were collected. Patients were divided into four groups according to their apnea-hypopnea index (AHI) results: Group I, AHI ≤5/h; Group II, 5/h < AHI ≤30/h; Group III, 30/h < AHI ≤60/h; and Group IV, AHI> 60/h.</p><p><b>RESULTS</b>A total of 133 patients were included in this study with 111 males (83.5%) and 22 females (16.5%). Mean age was 41.6 ± 9.9 years, and the mean body mass index was 28.1 ± 4.0 kg/m2. AHI ranged between 0 and 130.8/h with a mean of 39.1 ± 30.7/h. There were 24, 34, 35, and 40 patients in Group I, Group II, Group III, and Group IV, respectively. Significant differences were found for AHI (F = 388.368, P< 0.001), minimal pulse oxygen saturation (F = 91.902, P< 0.001), and arousal index (F = 31.014, P< 0.001) among four groups; no significant differences were found for CRAE (F = 0.460, P = 0.599) and CRVE (F = 0.404, P = 0.586) among groups; there were significant differences for AVR between Group I and Group IV (63.6 ± 5.1% vs. 67.2 ± 5.5%, P = 0.010) Group II and Group IV (64.5 ± 6.0% vs. 67.2 ± 5.5%, P = 0.030), and Group III and Group IV (64.7 ± 4.1% vs. 67.2 ± 5.5%, P = 0.043). A main group-by-AHI effect was found on the AVR: patients with higher AHI showed higher AVR results (r = 0.225, P = 0.009). Multivariate logistic regression analysis was used for multi-variable factors. A group-by-age effect was found on the AVR: younger patients showed higher AVR results (β = -0.001, P = 0.020).</p><p><b>CONCLUSIONS</b>This study indicated that increased AVR of retinal vessel can be observed in extremely severe OSAS patients. For patients with OSAS, retinal vascular abnormalities may become an early indication for further cardiovascular abnormalities.</p>

Clinical efficacy and safety of controlled-release dinoprostone insert: a multicenter retrospective study / 南方医科大学学报

<p><b>OBJECTIVE</b>To analyze the effectiveness and safety of controlled-release dinoprostone insert for term labor induction in the Pearl River Delta of Guangdong province.</p><p><b>METHODS</b>Twenty hospitals using controlled-release dinoprostone insert for term labor induction in the Pearl River Delta of Guangdong province were stratified into provincial hospitals and municipal hospitals, and three hospitals of each level were selected as research units. According to the inclusion and exclusion criteria, 1390 pregnant women receiving term labor induction using controlled-release dinoprostone insert were retrospectively analyzed to evaluate the the effectiveness and safety with another 957 pregnant women with induced abortion using oxytocin as the control group.</p><p><b>RESULTS</b>Compared with the control group, the controlled-release dinoprostone insert group showed a significantly longer length of the latent phase of labor (4.06∓2.65 vs 3.20∓2.08 h, P=0.003, 95%CI [0.182, 0.920]) and shorter lengths of the active phase (1.73∓1.32 vs 2.22∓1.75 h, P=0.000, 95%CI [-0.795, -0.363]) and the second stage of labor (0.49∓0.37 vs 0.54∓0.43 h, P=0.003, 95%CI [-0.137, -0.028]). No significant differences were found in the length of the first stage of labor, the vaginal delivery rate, adverse reactions, or fetal outcomes between the two groups.</p><p><b>CONCLUSION</b>Controlled-release dinoprostone insert is effective and safe for labor induction at term.</p>

Effect of Intercellular Adhesion Molecule-1 on Adherence Between Mesenchymal Stem Cells and Endothelial Progenitor Cells / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To investigate the effects of intercellular adhesion molecule-1(ICAM-1) on the adherence between mesenchymal stem cells (MSC) and endothelial progenitor cells (EPC).</p><p><b>METHODS</b>MSC and EPC were isolated, cultured and expanded from the 6-8 weeks aged C57BL/6 murine bone marrow by in vitro. Immuno-fluorescence was used to detect the expression of ICAM-1 in MSC group, EPC group and co-cultured MSC and EPC group. The mRNA and protein levels of ICAM-1 were detected by RT-PCR and Western blot respectively, then, the ICAM-1 adherence between MSC and EPC was observed by adding different concentration of neutralizing antibody.</p><p><b>RESULTS</b>The expression of ICAM-1 on surface of MSC and EPC could be detected by cell immunofluorescence method. According to results of the semiquantitative fluorescene detection, the fluorescence strength of MSC+EPC co-cultured group (89.02 ± 24.52) was higher than that of MSC group (31.25 ± 2.95) and EPC group (34.32 ± 5.02), and there was statistical difference between them (P < 0.01), but there was no obvious difference between MSC group and EPC group (P > 0.05). RT-PCR detection showed that the expression levels of ICAM-1 in MSC+EPC co-cultured group were higher than that in MSC group and that in EPC group (P < 0.01), and expression level of ICAM in EPC group was higher than that in MSC group (P < 0.01). Western blot detection showed that the expression level of ICAM-1 protein in MSC+EPC co-cultured group (0.33 ± 0.4) was higher than that in MSC group (0.11 ± 0.01) (P < 0.05) and than that in EPC group (0.19+0.02) (P < 0.05), However, the expression level of ICAM-1 protein in EPC group was higher than that in MSC group (P < 0.05). The test of different concentrations against neutralizing antibody showed that with the increasing of concentration of ICAM-1 neutralizing antibody, the adhesion capability of MSC and EPC was gradually decreasing.</p><p><b>CONCLUSION</b>The ICAM-1 can mediate the adherence process between MSC and EPC.</p>

Investigation of lymphoma patients' EBV infection status / 中国实验血液学杂志

This study was purposed to investigate the EBV infection status of lymphoma patients from January 2008 to April 2012 in the First Hospital of Peking University. All the candidates have been detected for EBV which was either peripheral blood EBV DNA or ISH EBER in pathology from January 2008 to April 2012. The information on their sex, age, pathological type, peripheral blood EBV DNA and ISH EBER was collected, the positive rate of different EBV tests was studied, and the different characteristics of the EBV(+) and EBV(-) group were also explored. And Kaplan-Meier and Cox survival analysis was applied to investigate the EBV's effect on overall survival of these patients. The results showed that among 169 lymphoma patients, the positive rates of EBV EBER in extranodal NK/T cell lymphoma, angioimmunoblastic T cell lymphoma and peripheral T-cell lymphoma were 84.8%, 72.7% and 40.0%, respectively, and were ranged as the top three. The positive rate of EBV in DLBCL was relatively lower (16.7%) than that in above three types of lymphoma. The positive rate of peripheral blood EBV DNA of the elderly EBV(+) DLBCL was 50%. One out of 10 HL patients was subjected to EBER detection, the result of which was positive. The positive rate of peripheral blood EBV DNA of HL was 10%. Both the T cell lymphoma proportion and the rate of B symptom were higher in EBV(+) group than in EBV(-) group. In all the EBER(+) cases, the difference of OS between EBV(+) and EBV(-) patients was statistically significant. In multiple-factor survival analysis, peripheral blood EBV DNA positive was an independent risk factor for poor prognosis in the patients with lymphoma. It is concluded that EBV is closely related to extranodal NK/T cell lymphoma, angioimmunoblastic T cell lymphoma and peripheral T-cell lymphoma. Peripheral blood EBV DNA positive is an independent risk factor for poor prognosis in lymphoma patients.

Bilateral chylothorax following left supraclavicular lymph node dissection for breast cancer: one case report and literature review / 癌症

Chylothorax is a rare complication of neck dissection, and bilateral chylothorax is even rarer. However, both are potentially serious and sometimes life-threatening, especially those that are associated with left neck dissection for head and neck neoplasms. We report one case of bilateral chylothorax following left supraclavicular dissection for breast cancer. This case was treated successfully with a new conservative management approach.

CT manifestations of liver involvement in children with Langerhans cell histiocytosis / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To investigate the computed tomography (CT) manifestations of liver involvement in children with Langerhans cell histiocytosis (LCH).</p><p><b>METHODS</b>Retrospective analysis was performed on 9 LCH children with liver involvement confirmed by clinical, laboratory and pathological examinations to investigate the CT manifestations of this condition. These children, including 6 males and 3 females, had undergone both plain CT scan and dual-phase (the arterial and portal venous phases) contrast-enhanced CT scan.</p><p><b>RESULTS</b>The main CT manifestations included hepatomegaly (8 cases); periportal dendritic hypodense lesions or "periportal halo sign" (7 cases) which were mildly or moderately enhanced in the arterial phase; intrahepatic bile duct dilatation (5 cases); lymphadenopathy in the hepatic hilar or retroperitoneal region (4 cases); and diffuse small hypodense nodules (3 cases), which showed annular enhancement on the contrast-enhanced CT scan.</p><p><b>CONCLUSIONS</b>CT findings may be helpful in the early diagnosis and treatment of LCH in children.</p>

Evaluation of neuromuscular activity in patients with obstructive sleep apnea using chin surface electromyography of polysomnography / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>It is believed that defects in upper airway neuromuscular control play a role in sleep apnea pathogenesis. Currently, there is no simple and non-invasive method for evaluating neuromuscular activity for the purpose of screening in patients with obstructive sleep apnea. This study was designed to assess the validity of chin surface electromyography of routine polysomnography in evaluating the neuromuscular activity of obstructive sleep apnea subjects and probe the neuromuscular contribution in the pathogenesis of the condition.</p><p><b>METHODS</b>The chin surface electromyography of routine polysomnography during normal breathing and obstructive apnea were quantified in 36 male patients with obstructive sleep apnea. The change of chin surface electromyography from normal breathing to obstructive apnea was expressed as the percent compensated electromyography value, where the percent compensated electromyography value = (normal breath surface electromyography - apnea surface electromyography)/normal breath surface electromyography, and the percent compensated electromyography values among subjects were compared. The relationship between sleep apnea related parameters and the percent compensated electromyography value was examined.</p><p><b>RESULTS</b>The percent compensated electromyography value of the subjects varied from 1% to 90% and had a significant positive correlation with apnea hypopnea index (R(2) = 0.382, P < 0.001).</p><p><b>CONCLUSIONS</b>Recording and analyzing chin surface electromyography by routine polysomnography is a valid way of screening the neuromuscular activity in patients with obstructive sleep apnea. The neuromuscular contribution is different among subjects with obstructive sleep apnea.</p>

Determination of sodium and potassium in Salviae Miltiorrhizae Radix et Rhizoma and its extract by HPLC-ELSD / 中草药

Objective: To establish the HPLC-ELSD method for the determination of sodium (Na) and potassium (K) in Salviae Miltiorrhizae Radix et Rhizoma (SMRR) and its extract. Methods: The column was Waters Sepherisorb SCX column (250 mm × 4.6 mm, 5 μm); The mobile phase was 0.05 mol/L ammomium acetate solution (adjusted to pH 4.8 with acetic acid)-acetonitrile (70:30); The flow rate was 1.0 mL/min; The column temperature was 30°C; The drift tube temperature of ELSD was 100°C; The gas flow rate was 2 L/min; And the detector gaining was 2. Results: The calibration curves of Na and K were linear in the ranges of 19.7-197 μg/mL (r = 0.9998) and 35.0-350 μg/mL (r = 0.9995), respectively. The average recoveries of Na and K were 99% (RSD = 0.7%) and 100.2% (RSD = 0.8%), respectively. Conclusion: The method is simple and accurate, and is suitable for determining the contents of Na and K in SMRR and its extract.

Six cases report of differential diagnosis of periapical diseases / 国际口腔科学杂志·英文版

The distinction of some particular forms of periapical area, involving diseases from regular periapical disease, is a matter of considerable importance when choosing a correct treatment. The aim of this study is to describe the differential diagnosis of periapical diseases from six rare cases in clinical practice. The six rare cases are examples of situations where it is difficult to make a differential diagnosis in clinical practice. By retrospective surveys on the clinical examination, radiographs and pathological results, six patients referred to endodontic treatment in our department were analyzed for the accuracy of diagnosis and therapy. The pathoses of the six cases included two atypical radical cysts, periapical cemental dysplasia, cemento-ossifying fibroma, thymus cancer metastasis in the periapical site and tuberculosis. This report indicates that endodontists should be cognizant of a few particular circumstances when clinically treating periapical diseases.

Hepatitis C viruses infection situation in the human population of six provinces in China / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To investigate the seroprevalence of hepatitis C viruse infection in the human population in six regions of Beijing, Heilongjiang, Shandong, Ningxia, Gansu and Sichuan in China.</p><p><b>METHODS</b>ELISA was used for detecting anti-HCV IgG of the serum samples. All sample were collected in 2006-2008 in six areas.</p><p><b>RESULTS</b>9538 samples were detected. The total positive rate of anti-HCV was 0.39% (37), 0.23% (3/1328) in Beijing, 0.74% (12/1629) in Heilongjiang, 0.26% (5/1962) in Shandong, 0.1% (1/1000) in Ningxia, 0.44% in Gansu (9/2 037) and Sichuan (7/1582), respectively. The 37 positive samples at the sex were 19 (51.35%) of man and 18 (48.65%) of female. At the age group were 1 (2.70%) of < 10 years old, 5 (13.51%) of 10-19 years old, 4 (10.81%) of 20-29 years old, 6 (16.22% ) of 30-39 years old, 9 (24.32%) of 4049 years old, 12 (32.43%) of > or = 50 years old. The positive samples were detected anti-HAV-IgG, anti-HEV-IgG and HBsAg/ HBcAb /HBeAb. The positive Number was 35 (94.59%), 10 (27.03%) and 2 (5.41%) respectively.</p><p><b>CONCLUSIONS</b>HCV infection rate in the population was 0.1% -0.74%, 1/3 of > or = 50 years old in HCV positive. Hepatitis C virus co-infection with HAV, HEV and HBV.</p>

Alcohol withdrawal syndrome associated with oral cancer operation: a case report / 华西口腔医学杂志

Alcohol withdrawal syndrome (AWS) is a rare complication associated with oral cancer operation. This article reported a case of AWS after resection of squamous cell cancer of the right floor of mouth combined with radical neck dissection and trapezius myocutaneous flap reconstruction. The discussion included diagnosis, treatment and prevention of AWS.

Observation of protective effect on mice after immunization with Yersinia pestis capsular antigen F1 and recombinant rV270 / 中国地方病学杂志

Objective To evaluate the protective effect of Yersinia pestis capsular antigen F1 and recombinant rV270 on mice after immunization with them.Methods According to body weight,40 female Balb/c mice aged 6 to 8 weeks were randomly divided into four experimental groups(Fl-10 μg + aluminum adjuvant,F1-20 μg + aluminum adjuvant,rV-10 μg + aluminum adjuvant,and rV-20 μg + aluminum adjuvant) and a control group,8 in each group.Mice in experimental groups were immunized with the natural antigen F1 and recombinant antigen rV270 adsorbed to 25％ aluminum adjuvant and the control group was immunized with the same amount of aluminum adjuvant.Each mouse was immunized at the hind leg muscle with 100 ml immunizing agent,then a booster immunization was done once on the 21st day after the first immunization.The blood of all mice was collected on the 8th week after the first immunization,serum antibody titers were detected by ELISA and the data of antibody titers were analyzed by t test for comparison between groups.At the same time the mice were injected subcutaneously with 2000-fold LD50 of Yersinia pestis virulent strain 141,after 14 days,the protective effect of immunization was analyzed.Results The control group did not produce antibody.Antibody geometric mean titers (GMT) of the F1-10 mg + aluminum adjuvant and F1-20 mg + aluminum adjuvant groups were 1 ∶ 30443.9,and 1 ∶21527.8,respectively,and compared between the two groups,the difference was not statistically significant (t =1.1282,P ＞ 0.05).The GMTs of the rV-10 μg + aluminum adjuvant and rV-20 μg + aluminum adjuvant groups were 1 ∶ 13957.3 and 1 ∶18100.9,respectively,and compared between the two groups,the difference was not statistically significant(t =0.9408,P ＞ 0.05 ).After subcutaneous injection with Yersinia pestis virulent strain 141,all mice died in the control group but all survived in the experimental group.Conclusion The immune activity of natural antigen F1 and recombinant rV270 is high,which can be used as the main component of subunit vaccine in the plague subunit vaccine study.