Passively mode-locked radially polarized laser based on ceramic Nd:YAG rod.

A mode-locked radially polarized laser based on a ceramic Nd:YAG rod that was transversely pumped by LD bars. The maximum output power of 10.6 W was achieved with the frequency of 45 MHz, the average pulse width of 75 ps Abstract: By using a semiconductor saturable absorber mirror, we demonstrated the generation of and the beam quality of M2 = 2.11.

Heavy metal contamination of surface soil in electronic waste dismantling area: site investigation and source-apportionment analysis.

The dismantling and disposal of electronic waste (e-waste) in developing countries is causing increasing concern because of its impacts on the environment and risks to human health. Heavy-metal concentrations in the surface soils of Guiyu (Guangdong Province, China) were monitored to determine the status of heavy-metal contamination on e-waste dismantling area with a more than 20 years history. Two metalloids and nine metals were selected for investigation. This paper also attempts to compare the data among a variety of e-waste dismantling areas, after reviewing a number of heavy-metal contamination-related studies in such areas in China over the past decade. In addition, source apportionment of heavy metal in the surface soil of these areas has been analysed. Both the MSW open-burning sites probably contained invaluable e-waste and abandoned sites formerly involved in informal recycling activities are the new sources of soil-based environmental pollution in Guiyu. Although printed circuit board waste is thought to be the main source of heavy-metal emissions during e-waste processing, requirement is necessary to soundly manage the plastic separated from e-waste, which mostly contains heavy metals and other toxic substances.

Selective Complex Precipitation for Ferro-Chrome Separation From Electroplating Sludge Leaching Solution.

In this paper, aiming at the problem of chrome-iron separation in electroplating sludge, the separation of ferrochrome by complexation and precipitation with benzoic acid as complexing agent is achieved. The optimal conditions consisted of a 1: 3 molar ratio of Fe3+: C6H5COOH, a reaction temperature of 30°C, a final pH of 2.5 and a reaction time of 2 min. The separation rate of the iron was 97.38% and the rate of loss of chromium was only 3.59%. The ferrochromium separation products were analyzed by XRD, fluorescence spectroscopy, infrared spectroscopy and H NMR Spectroscopy in order to study the mechanism of precipitation. The results showed that benzoic acid preferentially forms a complex with iron and iron benzoate precipitates with an increase pH. The iron benzoate crystals have a fine particle size, settle rapidly and are easy to filter. The separation of Cr 3+/Fe3+ was successful using our methodology.

Overall planning and optimization: characteristics analysis of the medical doctoral supervisor and consideration of the current situation of enrollment / 中华医学教育探索杂志

This study has combed and analyzed the characteristics of medical doctoral supervisors and the enrollment status from 2015 to 2018 in Tongji University School of Medicine. The results show that the distribution of doctoral supervisors' age, gender and professional title is relatively balanced. The enrollment situation shows the clustering trend. There are obvious differences in enrollment among clinical medical disciplines, and the scales of doctoral supervisors and doctoral students are not matched and unevenly distributed. It is essential to give an overall consideration in discipline resources and optimize enrollment allocation, for improving the construction of doctoral supervisors and the quality of doctoral training.

Progress on evaluation of dysphagia in patients with Parkinson′s disease / 中华神经科杂志

Parkinson′s disease (PD) is a common neurodegenerative disease. The prevalence of dysphagia in patients with PD is 16%-87%. Dysphagic patients show abnormalities in the oral, pharyngeal and esophageal phases of swallowing. The evaluation tools of dysphagia in patients with PD include instrumental assessment tools, non-instrumental objective assessment tools and subjective assessment tools. Videofluoroscopic study of swallowing and flexible endoscopic examination of swallowing are the gold standards for swallowing assessment in patients with PD; high-resolution manometry, tongue pressure measurement, surface electromyography and ultrasonography can be used as supplementary tests; the Swallowing Disturbance Questionnaire Scale, which is sensitive, specific, reliable and valid, is recommended as a screening tool.

Association between low ambient temperature during pregnancy and adverse birth outcomes: A systematic review and meta-analysis / 中华医学杂志(英文版)

BACKGROUND@#Extreme temperature events, including extreme cold, are becoming more frequent worldwide, which might be harmful to pregnant women and cause adverse birth outcomes. We aimed to investigate the association between exposure to low ambient temperature in pregnant women and adverse birth outcomes, such as preterm birth, low birth weight, and stillbirth, and to summarize the evidence herein.@*METHODS@#Relevant studies were searched in PubMed, Cochrane, and Embase electronic databases until November 2021. Studies involving low ambient temperature, preterm birth, birth weight, and stillbirth were included. The guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-analyses were followed to conduct this study risk of bias and methods for data synthesis.@*RESULTS@#A total of 34 studies were included. First, pregnant women exposed to low ambient temperature had an increased risk of preterm birth (risk ratio [RR] 1.08; 95% confidence interval [CI] 1.04-1.13). Subgroup analyses revealed that exposure during late pregnancy was more likely to induce preterm birth. In addition, only pregnant women exposed to <1st percentile of the mean temperature suffered increased risk of preterm birth. Moreover, pregnant women living in medium or hot areas were more prone to have preterm births than those in cold areas when exposed to low ambient temperatures. Asians and Blacks were more susceptible to low ambient temperatures than Caucasians. Second, pregnant women exposed to low ambient temperature had an increased risk of low birth weight (RR 1.07; 95% CI 1.03-1.12). Third, pregnant women had an increased risk of stillbirth while exposed to low ambient temperature during the entire pregnancy (RR 4.63; 95% CI 3.99-5.38).@*CONCLUSIONS@#Exposure to low ambient temperature during pregnancy increases the risk of adverse birth outcomes. Pregnant women should avoid exposure to extremely low ambient temperature (<1st percentile of the mean temperature), especially in their late pregnancy. This study could provide clues for preventing adverse outcomes from meteorological factors.@*REGISTRATION@#No. CRD42021259776 at PROSPERO ( https://www.crd.york.ac.uk/PROSPERO/ ).

Polybrominated diphenyl ethers in articles: a review of its applications and legislation.

Polybrominated diphenyl ethers (PBDEs), especially commercial decabrominated diphenyl ethers (c-decaBDE), have been widely produced and applied to numerous materials because of their highly effective flame-retardant capabilities. The production of commercial pentaBDE (c-pentaBDE) and commercial octaBDE (c-octaBDE) ended in 2004 because they are persistent, bioaccumulative, and toxic to both humans and the environment, but decaBDE production and use continue. Furthermore, many congeners of PBDEs are still prevalent in consumer products and articles that they pose enormous threat to both the environment and human health. PBDEs have been detected in the casing of electrical and electronic equipment, textile materials, automotive interiors, polyurethane foam (PUF) in seat cushions, children's toys, kitchenware, and other products. With increasing evidence about PBDE pollution and the adoption of international conventions, many developed countries have drawn more public attention to PBDEs and developed sound strategies for their management. This review summaries the utilization and management of PBDEs in a number of countries and reaches the conclusion that PBDEs are still prevalent in consumer articles, while specific regulations or policies for articles containing PBDEs are rare. Public awareness should be raised on the importance of sound management of articles containing PBDEs.

Application effect of the new model of "5G cloud plus medicine" network and linkage in treatment of patients with severe trauma / 中华创伤杂志

Objective:To explore the effect of the new model of "5G cloud plus medicine" network and linkage in improving the therapeutic effect for patients with severe trauma.Methods:A retrospective cohort study was conducted to analyze the clinical data of 410 patients with severe trauma admitted to Qingzhou People′s Hospital affiliated to Shandong First Medical University from November 2016 to November 2020. There were 258 males and 152 females, aged 16-80 years [(45.7±16.1)years]. The injury severity score (ISS) ranged from 17 to 55 points [(28.1±7.6)points]. A total of 210 patients with severe trauma were rescued by using the new model of "5G cloud plus medicine" network and linkage from November 1, 2018 to November 30, 2020 (observation group), and another 200 patients with severe trauma were rescued by the traditional treatment mode from November 1, 2016 to October 31, 2018 were selected as the control group. Time to start rescue (time from admission to the start of rescue), CT examination time (time from consultation to completion of CT scan), time to receive blood transfusion (time from blood transfusion request to execution), residence time in emergency room, ISS at postoperative 28 days, proportion of patients with blood transfusion, success rate of rescue and mortality rate were compared between the two groups.Results:Time to start rescue [(2.4±1.1)minutes], CT examination time [(29.1±10.3)minutes], time to receive blood transfusion [(28.1±10.2)minutes] and residence time in emergency room [(3.0±1.1)hours] in observation group were significantly shorter than those in control group [(5.5±1.2)minutes, (42.8±10.1)minutes, (48.5±13.1)minutes, (5.0±1.4)hours] (all P<0.05 or 0.01). ISS was (18.7±2.8)points in observation group, significantly lower than (22.1±3.4)points in control group ( P<0.05). Proportion of patients with blood transfusion was 49.5% (104/210) in observation group, similar with 42.5% (85/200) in control group ( P>0.05). Success rate of rescue was 99.0% (208/210) in observation group, significantly higher than 93.0% (186/200) in control group ( P<0.05). The mortality rate was 4.3% (9/200) in observation group, significantly lower than 8.5% (17/200) in control group ( P<0.05). Conclusion:For patients with severe trauma, the new model of "5G cloud plus medicine" network and linkage can effectively shorten the time to start rescue, CT examination time, time to receive blood transfusion and residence time in emergency room, improve the success rate of rescue and reduce the mortality rate, which is worthy of further promotion.

Clinical effect of fluid resuscitation guided by intra-abdominal pressure and oxygenation index for severe acute pancreatitis patients / 中华危重病急救医学

Objective:To investigate the effect of the liquid resuscitation therapy strategy using intra-abdominal pressure (IAP) and oxygenation index (PaO 2/FiO 2) as the end point in patients with severe acute pancreatitis (SAP). Methods:A retrospective study was performed, including 84 patients with SAP in emergency intensive care unit of Qingzhou Hospital Affiliated to Shandong First Medical University from January 2018 to August 2021. According to the status of fluid balance at admission, all patients were divided into the positive fluid balance group (43 cases) and the negative fluid balance group (41 cases). The clinical data including gender, age, etiology, underlying disease, acute physiology and chronic health evaluation Ⅱ (APACHEⅡ) and sequential organ failure assessment (SOFA) of all patients were collected. Fluid balance, PaO 2/FiO 2, IAP, compliance rate, new mechanical ventilation rate and overall hospital stay of 1 week after admission were recorded and compared between the two groups. Results:After 72 hours of treatment, the cumulative fluid balance was (5 219.5±1 038.4) mL in the positive fluid balance group; IAP was higher than that before treatment [mmHg (1 mmHg≈0.133 kPa): 11.9±2.0 vs. 11.7±2.1], but no significant difference was found ( P > 0.05); PaO 2/FiO 2 was significantly higher than that before treatment (mmHg: 299.8±51.4 vs. 220.5±50.4, P < 0.05). After 72 hours of treatment, the cumulative fluid balance in negative fluid balance group was (-3 542.4±1 310.6) mL; IAP was significantly lower than before treatment (mmHg: 11.4±1.8 vs. 15.2±1.9, P < 0.05); PaO 2/FiO 2 was significantly higher than that before treatment (mmHg: 309.9±50.9 vs. 215.4±49.7, P < 0.05). In the fluid resuscitation goals, after 72 hours of treatment, the compliance rate in the negative fluid balance group was significantly higher than that in the positive fluid balance group [82.93% (34/41) vs. 62.79% (27/43), P < 0.05]; 1 week after admission, the new mechanical ventilation rate in the negative fluid balance group was significantly lower than that in the positive fluid balance group [21.95% (9/41) vs. 41.86% (18/43), P < 0.05]; however, there was no significant difference in overall hospital stay between the two groups (days: 41.2±10.9 vs. 39.1±11.5, P > 0.05). After treatment, 70 patients survived and 14 patients died (including 9 cases in the positive fluid balance group and 5 cases in the negative fluid balance group). Conclusions:Using IAP and PaO 2/FiO 2 to guide liquid therapy could result in effective fluid resuscitation in SAP. The treatment strategy effectively improved prognosis of patients with SAP.

Study on criteria for selection of general practice doctoral supervisors / 中华全科医师杂志

Objective:To explore the criteria of general practice doctoral supervisors.Methods:The expert consultation questionnaire was formed by literature analysis. Experts in the field of general medicine from universities and tertiary hospitals in Shanghai were invited to participate in two rounds of Delphi consultation. The consultation content included the basic requirements and the importance evaluation of the selection criteria for general practice doctoral supervisors. Descriptive analysis and Analytic Hierarchy Process (AHP) were used to analyze the results of the study.Results:A total of 29 experts participated in the consultation, all with senior professional titles and doctoral degrees. The positive coefficient and expert authority coefficient of the two rounds of expert consultation were 1.0 and 0.925, respectively. The Kendall coordination coefficient of indicator importance evaluation were 0.436 and 0.397, respectively. The ethics, age, professional title, educational background and academic degree and diploma were considered to be included in the basic qualifications. The optimal standards for supervisor selection included teaching ability, scientific research ability, student training and team promotion ability that subdivided into 13 evaluation indexes.Conclusion:The basic qualifications and optimal standards for general practice doctoral supervisors have been preliminarily developed, which provides reference for selection of qualified general practice doctoral supervisors.

Advances on mechanical ventilation strategy of acute respiratory distress syndrome patients guided by drving pressure / 中国小儿急救医学

Acute respiratory distress syndrome (ARDS) is an acute diffuse inflammatory lung injury.Mechanical ventilation is the cornerstone of the treatment from ARDS, which aims to minimize ventilator-induced lung injury while maintaining effective oxygenation.The level of driving pressure affects the volume injury, pressure injury, biological injury and shearing injury during mechanical ventilation of ARDS patients.This study reviewed the mechanical ventilation strategy with driving pressure as guidance in ARDS patients.

Correlation Study of “Dose-effect-toxicity”of Miao Medicine Wikstroemia indica on Anti-immune Inflammation of Mice before and after Processed by “Sweat Soaking Method ” / 中国药房

OBJECTIVE：To investigate the “dose-effect-toxicity”correlation of Miao medicine Wikstroemia indica before and after processed on anti-immnue inflammation of mice . METHODS ：Mice were divided into blank group ，model group ，ethanol extract of W. indica raw product groups 1-6，ethanol extract of W. indica processed product by “sweat soaking method ”groups 1-6 （hereinafter called “raw groups 1-6”“processed groups 1-6”for short ，drug dosage were 0.13，0.20，0.26，0.52，1.04，2.6 g/kg）， positive group （cyclophosphamide，36.4 mg/kg），with 10 mice in each group. Except for blank group ，other groups were given 1％ 2，4-dinitrofluorobenzene-acetone-sesame oil mixed solution to induce delayed type hypersensitivity model. After modeling， blank group and model group were given constant volume of 1.0％ CMC-Na solution intragastrically ，and administration groups were given relevant medicine 20 mL/kg intrag astrically，oncea day ，for consecutive 5 d. A fter last medication ，ear swelling degree of mice were recorded ；the inhibition rate of swelling degree， half effective dose （ED50） and 95％ confidence 158-02-32）； interval（CI）of raw and processed products were calculated ； the weight of heart ，liver，spleen，lung and kidney were measured and the indexes of organs were calculated ；ELISA 1161472062@qq.com and modified chemical oxidation method were used to determine the serum levels of inflammatory factors （TNF-α， IL-10） and liver and renal function indexes （ALT，AST， TBIL，BUN，CREA）. RESULTS：Compared with blank group ，the degree of ear swelling in the model group was significantly increased（P＜0.05）. Compared with model group ，ear swelling degree of mice were decreased significantly in different doses groups of ethanol extract of raw and processed products of W. indica （P＜0.05）. The inhibition rate of swelling increased with the increase of dose ，ED50 and 95％CI of delayed hypersensitivity ear swelling were 0.239 6（0.129 0，0.445 2）g/kg and 0.147 3（0.076 8，0.282 7）g/kg，respectively. Compared with blank group ，liver index and serum TNF-α level of mice were increased significantly in model group ，while lung index and serum IL- 10 level were decreased significantly （P＜0.05）. Compared with model group ，the levels of liver indexes （positive group ，raw group 3，processed groups 1-6）and serum TNF-α levels（positive group ，raw groups 1-3，processed groups 1-4） were decreased significantly in different administration groups ；while the levels of lung indexes （positive group ，raw groups 3-6 and processed groups 3-6），serum IL- 10 levels（raw groups 1，2，4 and 5，processed groups 2-6），ALT，AST，BUN and CREA levels （raw groups 4-6），TBIL levels （raw groups 3-6 ）were increased significantly （P＜ 0.05）. CONCLUSIONS ：The ethanol extract of raw product of W. indica has certain anti-inflammatory activity ，and has certain hepatorenal toxicity to mice ，with certain “dose-effect-toxity”correlation. The ethanol ectract of processed product of W. indica has certain anti-inflammatory activity too ，but its hepatorenal toxicity was lower than raw product. The “sweat soaking method ” possesses the function of “retaining efficiency and reducing toxicity ”for processing W. indica .

Effective evaluation on informational support of the parenting sense of competence and parenting stress in primiparas / 中国实用护理杂志

Objective@#To evaluate the effectiveness on informational support of the parenting sense of competence and parenting stress in primiparas.@*Methods@#Ninety-five primiparas in the First Affiliated Hospital of Zhengzhou University were recruited from November 2017 to April 2018, mothers of premature infants discharged from hospital from November 2017 to January 2018 were divided into the control group,and which discharged from February 2018 to April 2018 were divided into the experimental group conveniently.Seven cases in the control group and 5 cases in the experimental group dropped out. The control group received routine nursing care, 4 times of informational support were implemented to the mothers of premature infants at the first 4 months after discharged in the experimental group,included team teaching, live demonstration, set up a wechat group, et al. All primiparas were investigated using the Chinese version of Parenting Sense of Competence Scale(C-PSOC) and the Parenting Stress Index-Short Form(PSI-SF) at the 1th,3th,6th month postpartum.@*Results@#At the 6th month postpartum, total scores of the Chinese version of Parenting Sense of Competence Scale and subscale scores of self-efficacy, satisfaction of the mothers of premature infants were 82.60±4.45, 39.19±3.25, 43.40±3.47, respectively in the experimental group,and the scores were 76.83±7.88, 36.90±4.82, 39.93±5.16, respectively in the control group, the difference between the two groups was statistically significant(t=4.117, 2.541, 3.613, P<0.05). At the 6th month postpartum,total scores of the Parenting Stress Index-Short Form and subscale scores of parenting distress,parent-child dysfunctional interaction,difficult child of the mothers of premature infants were 80.31±9.50, 28.62±4.54, 23.98±4.91, 26.14±5.15, respectively in the experimental group,and the scores were 87.36±8.58, 32.55±4.88, 25.95±4.15, 28.84±4.88, respectively in the control group,the difference between the two groups was statistically significant(t=-3.568-3.823, P<0.05).@*Conclusions@#Informational support can effectively improve the parenting sense of competence and relieve the parenting stress in primiparas.

Effective evaluation on informational support of the parenting sense of competence and parenting stress in primiparas / 中国实用护理杂志

Objective To evaluate the effectiveness on informational support of the parenting sense of competence and parenting stress in primiparas. Methods Ninety-five primiparas in the First Affiliated Hospital of Zhengzhou University were recruited from November 2017 to April 2018, mothers of premature infants discharged from hospital from November 2017 to January 2018 were divided into the control group,and which discharged from February 2018 to April 2018 were divided into the experimental group conveniently.Seven cases in the control group and 5 cases in the experimental group dropped out. The control group received routine nursing care, 4 times of informational support were implemented to the mothers of premature infants at the first 4 months after discharged in the experimental group,included team teaching, live demonstration, set up a wechat group, et al. All primiparas were investigated using the Chinese version of Parenting Sense of Competence Scale(C-PSOC) and the Parenting Stress Index-Short Form(PSI-SF) at the 1th,3th,6th month postpartum. Results At the 6th month postpartum, total scores of the Chinese version of Parenting Sense of Competence Scale and subscale scores of self-efficacy, satisfaction of the mothers of premature infants were 82.60 ± 4.45, 39.19 ± 3.25, 43.40 ± 3.47, respectively in the experimental group,and the scores were 76.83 ± 7.88, 36.90 ± 4.82, 39.93 ± 5.16, respectively in the control group, the difference between the two groups was statistically significant(t=4.117, 2.541, 3.613, P<0.05). At the 6th month postpartum,total scores of the Parenting Stress Index-Short Form and subscale scores of parenting distress,parent-child dysfunctional interaction,difficult child of the mothers of premature infants were 80.31 ± 9.50, 28.62 ± 4.54, 23.98 ± 4.91, 26.14 ± 5.15, respectively in the experimental group,and the scores were 87.36 ± 8.58, 32.55 ± 4.88, 25.95 ± 4.15, 28.84 ± 4.88, respectively in the control group,the difference between the two groups was statistically significant(t=-3.568-3.823, P<0.05). Conclusions Informational support can effectively improve the parenting sense of competence and relieve the parenting stress in primiparas.

MicroRNA-129 Inhibits Gastric Cancer Cells Proliferation and Invasion by Targeting HMGA2 / 胃肠病学

Background:More and more evidences suggest that microRNA plays an important role in the development of gastric cancer (GC).Expression of miR-129 in GC tissues is found abnormal, however, the mechanism of miR-129 in cell proliferation and invasion is still undefined.Aims:To investigate the expression of miR-129 in GC tissue and GC cell lines and the mechanism of miR-129 in proliferation and invasion of SGC-7901 cells.Methods:Eighty-two GC tissues and corresponding paracancerous tissues were collected, human gastric epithelial cell line and different GC cell lines were cultured, qPCR was conducted to assess miR-129 expression.SGC-7901 cells were transfected with miR-129 mimic or miR-NC, and then were transfected with overexpressed HMGA2 plasmid.Colony formation assay was used to detect cell proliferation ability, and Transwell chamber was used to assess cell invasion ability.Pearson correlation analysis was used to analyze the correlation between miR-129 and HMGA2 mRNA expression.Luciferase assay was performed to determine the activity of luciferase.mRNA and protein expressions of miR-129, HMGA2 were determined by qPCR and Western blotting, respectively.Results:Compared with paracancerous tissues, expression of miR-129 was significantly decreased in GC tissues (P<0.05);when compared with human gastric epithelial cells, expression of miR-129 was significantly decreased in GC cell lines (P<0.05).Compared with miR-NC group, proliferation and invasion abilities of SGC-7901 cells were inhibited in miR-129 mimic group (P<0.05).HMGA2 mRNA expression in GC tissues was significantly upregulated (P<0.05), and was negatively correlated with miR-129 expression (r=-0.543 9, P<0.01).Luciferase activity in wild-type miR-129 mimic group was significantly lower than that in miR-NC group (P<0.05);mRNA and protein expressions of HMGA2 were decreased after transfection with miR-129 mimic (P<0.05).Compared with miR-129+vector group, proliferation and invasion of SGC-7901 cells were significantly increased in miR-129 mimic+HMGA2 group (P<0.05).Conclusions:The expression of miR-129 is decreased in GC tissue and cells;miR-129 inhibits SGC-7901 cells proliferation and invasion by negatively regulating HMGA2.

Platelet Count/Spleen Diameter Ratio for Prediction of Esophageal Varices in Patients with HBV-related Cirrhosis: A Clinical Study / 胃肠病学

Background: Esophageal variceal bleeding is a clinical emergency and the major cause of death in patients with liver cirrhosis.Aims: To assess the value of platelet count (PC)/spleen diameter (SD) ratio in predicting the presence of esophageal varices (EV) in patients with HBV-related cirrhosis in China.Methods: A total of 91 consecutive HBV-related cirrhosis patients with EV from Aug.2013 to Dec.2015 at Renji Hospital (South Campus),School of Medicine,Shanghai Jiao Tong University were enrolled.Thirty-two HBV-related cirrhosis patients without EV were enrolled as controls.Upper gastrointestinal endoscopy,routine laboratory examinations and abdominal ultrasonography were performed and the related parameters were collected.Binary Logistic regression analysis was carried out to identify independent risk factors associated with EV.ROC curve was used to evaluate the predictive performance of PC/SD ratio for the presence of EV.Results: The PC/SD ratio was significantly lower in EV group than in non-EV group (538.2±327.0 vs.1 105.9±426.6,P=0.001).Binary Logistic regression analysis showed that the PC/SD ratio was independently associated with the presence of EV (OR=57.29,95％ CI: 15～214,P=0.000).In ROC curve analysis,the area under the curve (AUC) of PC/SD ratio in predicting the presence of EV was 0.853;the optimal cutoff value was 842,and the sensitivity,specificity,positive predictive value and negative predictive value were 85.7％,75.0％,90.7％,and 64.9％,respectively.Conclusions: PC/SD ratio can be used as a non-invasive tool for prediction of the presence of EV in patients with HBV-related cirrhosis.It may reduce the number of unnecessary endoscopy.

Genetic analysis of Echinococcus granulosus strain in Liaoning Province, China / 中国人兽共患病学报

To analyze the genotype of Echinococcus granulosus found in Liaoning Province,hydatid cyst was taken from the patient's liver,DNA of cyst was isolated and mitochondrial cox1 gene was sequenced substantially.Sequence results was analyzed by Blast and compared with similar strains in GenBank.Results showed that molecular analysis confirmed the echinococcosis by identical sequence of our strain with E.granulosus (AF297617) G1 genotype,with 0.1％ difference.And the sequence of our strain was consistent with 25 other strains in different countries.In conclusion,genotyping of mitochondrial gene coxl is a very useful tool for diagnosis of echinococcosis.We first reported a strain of E.granulosus in Liaoning Province,which provide novel molecular epidemiological data of this zoonosis.

Percutaneous Transhepatic Variceal Embolization Combined with Partial Splenic Embolization for Treatment of Esophagogastric Variceal Bleeding in Patients with Liver Cirrhosis / 胃肠病学

Background:Esophagogastric variceal bleeding is a severe and commonly seen complication of portal hypertension in patients with liver cirrhosis. Prevention of rebleeding remains an important issue in the management of patients suffered from the disease. Aims:To evaluate the efficacy and safety of percutaneous transhepatic variceal embolization(PTVE) combined with partial splenic embolization(PSE)for treatment of esophagogastric variceal bleeding in patients with liver cirrhosis. Methods:Ten liver cirrhosis patients with esophagogastric variceal bleeding were prospectively selected and treated by PTVE combined with PSE. The blood flow of portal system was measured by Doppler ultrasonography pre- and post-operatively;meanwhile peripheral blood cells were counted. A 1-2-year follow-up was carried out and the rebleeding and procedure-related complications were recorded. Results:The postoperative inner diameter of main portal vein,as well as the blood flow velocity of main portal vein and splenic vein were significantly reduced as compared with those before operation(P < 0. 05). Three months after operation,the peripheral white blood cell and platelet were still significantly higher than those before operation(P < 0. 05). During 1-year follow-up,rebleeding appeared in 2 patients,one of them was found having main portal vein thrombosis developed,and was treated by endoscopic esophageal variceal ligation because the gastric varices was not as evident as ever. The rebleeding rate and incidence of portal system thrombosis after the PTVE-PSE procedure was 20. 0% and 10. 0%,respectively. Conclusions:PTVE combined with PSE seemed efficient for alleviating portal hypertension,and might be recommended as a safe and effective interventional therapy for liver cirrhosis patients with esophagogastric variceal bleeding.

Value of bedside color Doppler dynamic monitoring in periventricular-intraventricular hemorrhages of infants / 中华超声影像学杂志

Objective To investigate the clinical value of the bedside color Doppler in the assessment infants with periventricular-intraventricular hemorrhages (PIVH).Methods Sixty-eight cases of PIVH newborns and 156 healthy newborns were involved in the study,dynamic monitoring were undergone within a week after birth.The middle cerebral artery(MCA) hemodynamic parameters of velocity systolic (Vs),velocity diastolic(Vd) and resistance index (RI) were recorded,and the differences of the parameters were compared between different grades as well as those of the normal newborns at 1 d,4 d and 7 d after born.Results Total 68 PIVH infants were diagnosed by bedside color Doppler accurately.Prevalences of premature and low birth weight infants were higher than term infants and normal birth weight children,respectively (P ＜0.05).Vs and Vd of 4 groups of children with PIVH showed an increasing trend in a week after born.The differences of Vs between grade Ⅰ and normal newborns in 4 d and 7 d were not statistically significant (P＞ 0.05),the differences of the other three groups compared with normal newborn group in1 d,4 d and 7 d were statistically significant (P ＜0.05).Vd of grade Ⅱ newborns within 7 d were greater than those of other 4 groups (P ＜0.05),grade Ⅲ and grade Ⅳ within 7 d were less than healthy newborns (P ＜0.05).The difference of RI between all groups were not statistically significant (P ＞ 0.05).Conclusions The diagnostic accuracy rate of PIVH by bedside Doppler is high and the dynamic monitoring of neonatal hemodynamics could provide an important basis for assessing the occurrence and development of PIVH.

Effect of malaria surveillance and control of Guangxi Zhuang Autonomous Region in 2013 / 中国血吸虫病防治杂志

Objective To evaluate the effect of malaria surveillance and control of Guangxi Zhuang Autonomous Region in 2013,and explore the suited surveillance and management of imported malaria cases,so as to provide the evidence for formulat?ing the scientific control measures of imported malaria. Methods The endemic data and control measures of malaria in Guangxi in 2013 were collected and analyzed statistically. Results A total of 1 251 malaria cases were found in Guangxi in 2013,with 88.25%(1 104 cases)of falciparum malaria,8.63%(108 cases)of vivax malaria,0.64%(8 cases)of quartan malaria,1.52%(19 cases)of ovale malaria,and 0.96%(12 cases)of mixed infection;93.21%(1 166 cases)were off?farm workers;96.56%(1 208 cases)were imported from Africa and mainly consisted of falciparum malaria cases;3.44%(43 cases)were imported from southeast Asia and mainly consisted of vivax malaria cases. The cases of imported malaria were increasing and the infection rate in 2013 was increased by 464%compared with that in 2012. Conclusion The imported malaria cases in Guangxi mainly come from Africa at present. Promoting the health education and professional skill of malaria control and treatment ,as well as the diagnosis and treatment of the patients in early time are important measures to control the imported malaria.