Case Study on Deductive Teaching of "Doctor-patient Communication" / 中国医学伦理学

By introducing the connotation of deductive teaching and analyzing the significance of early contact clinical course of "doctor-patient communication", the author reinterpreted the educational concept of deductive teaching combined with the characteristics of medical humanities, and reformed the early contact clinical course of "doctor-patient communication" by introducing deductive teaching method. Taking the early contact clinical course of "doctor-patient communication" of a medical university as an example, the teaching framework was designed to share experience from three aspects: teaching content, teaching process and teaching effect evaluation. At the same time, combined with the characteristics of the course and the needs of students, found out the problems encountered in the teaching process, and put forward constructive opinions and strategies, in order to provide theoretical and practical reference for the teaching of medical humanities course.

A pre-conception cohort study of fertility and its related factors among couples with the intention of conception / 中华预防医学杂志

Objective: To describe fertility and explore factors associated with it among pre-conception couples of childbearing age. Methods: Based on the pre-conceptional offspring trajectory study of the School of Public Health of Fudan University, couples of childbearing age who participated in the pre-conception physical examination in Shanghai Jiading District from 2016 to 2021 were recruited and followed up. Couples' time to pregnancy (TTP) was analyzed and Cox proportional hazards regression model was used to explore the factors associated with TTP. Kaplan-Meier was used to calculate each menstrual cycle's cumulative pregnancy rate. Results: A total of 1 095 preconception couples were included in the analysis, the M(Q1,Q3)of TTP was 4.33 (2.41, 9.78) menstrual cycles. Age of women (FR=0.90, 95%CI: 0.85-0.95, P<0.001), women who were overweight or obese before pregnancy (FR=0.36, 95%CI: 0.24-0.55, P<0.001), women who were exposed to second-hand smoking (FR=0.63, 95%CI: 0.44-0.92, P=0.016), women whose home or office had been renovated in the past 2 years and had a particular smell (FR=0.46, 95%CI: 0.26-0.81, P=0.008) were risk factors for impaired fertility. Regular menstrual cycles (FR=1.64, 95%CI: 1.16-2.31, P=0.005), females who often drank tea/coffee (FR=1.55, 95%CI: 1.11-2.17, P=0.011) and males who took folic acid before conception (FR=2.35, 95%CI: 1.38-4.23, P=0.002) were associated with better fertility. The cumulative pregnancy rate of 3, 6, and 12 menstrual cycles was 37.6%, 64.4%, and 78.4%, respectively. Conclusion: Older couples, overweight or obesity before pregnancy, irregular menstruation, exposure to secondhand smoke and decoration pollutants in females are associated with impaired fertility. Frequent tea/coffee drinking before pregnancy in females and taking folic acid before pregnancy in males are associated with shortened conception time.

Analysis of red blood cells supply before and after the outbreak of COVID-19 from 2018 to 2021 in 18 domestic blood centers / 中国输血杂志

【Objective】 To compare the supply data of red blood cells(RBCs) from 18 blood centers in China before and after the outbreak of COVID-19 during 2018 to 2021. 【Methods】 Eight indicators related to RBCs supply from 18 blood centers in China during 2018-2021 were collected retrospectively, including the storage of total amount of qualified RBCs (referred to as the total amount of storage), the distribution of total amount of RBCs (referred to as the total amount of distribution), the distribution amount of RBCs per 1 000 population (referred to as the amount of distribution per 1 000 population), the distribution amount of RBCs from 400 mL original blood per 1 000 population [referred to as the amount of distribution per 1 000 population (400 mL)], the average daily distribution amount of RBCs (referred to as the average daily distribution amount), the average daily storage amount of RBCs (referred to as the average daily storage amount), the average storage days of RBCs when distribute (referred to as the RBC storage days), and the expired amount of RBCs (referred to as the expired amount). Based on the outbreak time of COVID-19, the data of 2018 and 2019 were the pre-pandemic group, and the data of 2020 and 2021 were the post-pandemic group. 【Results】 Data on RBCs supply in 18 blood centers from 2018 to 2021(comparison of the pre-pandemic group and the post-pandemic group): the amount of distribution per 1 000 population (median 14.68 U>13.92 U) decreased, the amount of distribution per 1 000 population (400 mL) (median 10.16 U>9.21 U) decreased, and the difference was statistically significant (P99 084.08 U) decreased, the amount of distribution per 1 000 population (median 15.04 U>12.19 U) decreased, the amount of distribution per 1000 population (400 mL) (median 10.11 U>8.94 U), the average daily distribution amount(322.66 U>270.73 U) decreased and RBC storage days (median 10.50 d324.46 U), the average daily inventory (median 3 222.00 U0.00 U) decreased, the difference has statistical significance (P<0.05). The results of ANOVA showed that there were significant differences on the data related to RBCs supply (except expired amount) in different blood centers (P<0.05). The ratio of average daily stock to average daily distribution in the post-outbreak group (median 12.36 d) was higher than that in the pre-outbreak group (median 10.92 d), the difference has statistical significance (P<0.05), with significant difference among different blood centers (P <0.05). 【Conclusion】 The COVID-19 pandemic has a significant impact on RBCs supply in different blood centers. In the second year of the pandemic, the supply capability had recovered to some extent, and there were differences in RBCs supply in different blood centers.

Causes analysis of blood donor deferral in 20 domestic blood centers / 中国输血杂志

【Objective】 To investigate the main causes of blood donor deferral in domestic blood center. 【Methods】 The causes of donor deferral were classified into 12 categories as previous medical history, drug use, alcohol consumption, menstrual period, underweight, abnormal blood pressure, abnormal body temperature, abnormal hemoglobin (Hb), lipemic blood, positive hepatitis B surface antigen (HBsAg), elevated alanine aminotransferase (ALT) and others according to the comparison indicators of Asia-Pacific Blood Network (APBN) and the national standard Blood Donor Health Examination Requirements. The relevant data of the top 3 causes of donor deferral, voluntarily reported by the members of Practice Comparison Working Group of China’s Mainland Blood Collection and Supply Institutions from 2014 to 2019, were collected and a histogram was generated. 【Results】 The median donor deferral rate of 20 domestic blood centers from 2014 to 2019 was 12.14%, with the lowest at 0.18% and highest at 32.32%, respectively. The top three causes for donor deferral were elevated ALT, abnormal Hb and abnormal blood pressure in year 2014, 2015, 2018 and 2019; elevated ALT, lipemic blood and abnormal blood pressure in 2016; elevated ALT, abnormal Hb, and lipemic blood in 2017. 【Conclusion】 The main causes of donor deferral were elevated ALT, abnormal Hb, abnormal blood pressure and lipemic blood.

A content analysis of the provincial laws and regulations for voluntary blood donation / 中国输血杂志

【Objective】 To perform quantitative analysis on the sample provincial laws and regulations for voluntary blood donation, and provide reference for further revision of laws and regulations. 【Methods】 31 study samples were current provincial laws and regulations for voluntary blood donation that can be collected from open sources. The issue date and the revision date of each sample were recorded. With "The Blood Donation Law of the People’s Republic of China" as reference, 5 categories were formed and additional clauses in samples were coded and rated following content analysis procedures. Sample provinces were divided into two groups based on donation rate and their differences in evaluation scores of categories were examined using rank sum test. 【Results】 Until December, 2021, 31 sample provinces had issued and implemented provincial laws and regulation for voluntary blood donation, and 14 of which had been revised. Many detailed clauses (total score 9.32±3.09) were added in sample provincial laws and regulations, more clauses were added in the categories of 'related government agencies and their responsibilities’, 'management of clinical blood use’ and 'rewards and punishment’. Sample provinces were divided into two groups according to the donation rate per 1 000 people recommended by World Health Organization(10‰). Compared to lower donation rate group, the total score and sub score in the categories of 'basic principles’, 'management of blood collection and supply’ were significantly higher in higher donation rate group. 【Conclusion】 In revision and improvement of provincial laws and regulations, 'basic principles’ and 'management of blood collection and supply’ could be considered. This assay mainly tries to provide a new research perspective and perform quantitative analysis on content of sample provincial laws and regulation for voluntary blood donation, the actual effect of the results in this study need longer time to be examined, and we will keep following its new advances.

Blood inventory changes and blood supply situation during COVID-19 / 中国输血杂志

【Objective】 To evaluate the impact of COVID-19 epidemic prevention and control on blood collection and supply, so as to accumulate experience for future similar public events. 【Methods】 The annual inventory before Spring Festival holiday, the supply of red blood cells and apheresis platelets during Spring Festival (from New year′s Eve to lunar January 6th) and the collection and supply units 3 months after the Spring Festival (the lunar January 7th to April 8th) during 2017 to 2020 were analyzed to evaluate the impact of the epidemic on blood collection, supply and inventory management. 【Results】 The inventory and its proportion in 2020 decreased to 14 594 U and 23.89%, compared with those in 2018 (16 095 U, 26.34%) and 2019 (16 301 U, 26.68%), with significant differences (P<0.05). The COVID-19 epidemic(3-month-post Spring Festival in 2019 and 2020) reduced the blood collection in urban areas(28 613 U and 19 901 U) and group donation (17 443 U and 5 332 U), but rasied blood collection in towns (43 184 U and 50 963 U). The clinical blood consumption in year 2017, 2018, 2019 and 2020 was 80 339 U, 79 359 U, 87 581 U and 74 986 U, respectively, decreasing due to the epidemic (P<0.05), with a small amount(229 U) of red blood cell discarding owing to expiration. The collection and supply of apheresis platelets were minimally affected by the epidemic. 【Conclusion】 The epidemic had a direct/indirect impact on blood collection, blood supply and inventory management, except for apheresis platelets collection and supply. It suggests that the characteristics of COVID-19 prevention and control measures can be used as references for future precise organization and targeted recruitment of blood resources in case of the similar emergencies. Close communication with clinical departments contributes to the safeguard of emergency transfusion and the prevention of blood expiration.

Clinical Features and Prognosis of Patients with Hematological Disease Complicated with Mucor Infection / 中国实验血液学杂志

OBJECTIVE@#To investigate the clinical features, treatment and prognosis of patients with hematological diseases complicated with mucor infection.@*METHODS@#The risk factors, clinical features, treatment regimen and prognosis of 18 hematological disease patients with mucor infection diagnosed by histopathology in our center from April 2014 to June 2020 were retrospectively analyzed.@*RESULTS@#Thirteen males and five females, with an average age of 30 (13－54) years old, were diagnosed as mucor infection by histopathological examination at the site of infection, including 16 cases of mucor infection alone and 2 cases of mucor + aspergillus mixed infection. There were 12 cases with malignant hematological disease and 6 cases with severe aplastic anemia, all of whom with long-term agranulocytosis, and their clinical manifestations and imaging findings were not specific. The common sites of infection were sinuses and lungs, and some patients showed multiple systemic manifestations. The remission status of hematological diseases and recovery of immune function showed an impact on the prognosis. All the patients were treated with amphotericin B liposome combined with posaconazole, and 15 patients were treated with surgery combined with antifungal drugs, 9 of whom were effective and 6 were ineffective, while intravenous administration in 3 cases was ineffective.@*CONCLUSION@#It is difficult to diagnose hematological disease complicated with mucor infection. After early diagnosis, prognosis can be improved by amelioration of primary state and combination of drugs and surgery.

Relationship between breastfeeding knowledge， self-efficacy and exclusive breastfeeding behavior among postpartum mothers / 上海预防医学

Objective:To explore the relationship between breastfeeding knowledge， self-efficacy and exclusive breastfeeding behavior among mothers of one-month old babies. Methods:Random sampling method was conducted for choosing 5 out of 13 community service health centers in Jiading district of Shanghai. A cross-sectional online survey was conducted among the mothers. Results:A total of 456 valid questionnaires were received， the full score of breastfeeding knowledge was set at 60， with an average of 47.17±5.65， ranging from 12 to 60. The full score of self-efficacy was set at 70， with an average of 47.70±14.48， ranging from 14 to 70. The exclusive breastfeeding rate of one-month old infants was 55.3%（252/456）. Multivariate logistic analysis showed that mothers with higher scores of breastfeeding knowledge had significantly higher rate of exclusive breastfeeding （OR=1.717， 95%CI 1.034-2.851， P=0.037）. Those with higher scores of breastfeeding self-efficacy also had significantly higher rate of exclusive breastfeeding （OR=5.736， 95%CI 3.455-9.522， P=0.001）. Conclusions:The breastfeeding knowledge and self-efficacy of mothers of one-month old babies were significantly associated with the rate of exclusive breastfeeding. Medical staff should strengthen the delivery and cultivation of breastfeeding knowledge and skills for mothers to improve breastfeeding self-efficacy， and ultimately promote the rate of exclusive breastfeeding.

Exercise behavior and its relevant factors in 3 099 pregnant women during pregnancy / 上海预防医学

Objective To investigate the current situation of the exercise, relevant knowledge and impact factors in pregnant women during pregnancy, providing references to instruct pregnant women to do suitable exercise. Methods Self-designed questionnaires were used to investigate the exercise behavior and cognition in 3 099 pregnant women who visited the clinic for first-time prenatal examination at Jiading District of Shanghai. Results It was found in investigation that 65.21% pregnant women often did exercise, of whom 29.14% did less than 20 minutes exercise every time, while 60.96% did 20 to 40 minutes, and 9.90% did more than 40 minutes.Slow-walking was the majority choice, which counted for 87.14% in pregnant women.And 34.79% pregnant women did not do exercise, mainly due to "wouldn't like to do exercise" or "don't have time for it".Age, body mass index (BMI), educational level with the pregnant women as well as their husbands impact factors related to their exercise behavior during pregnancy (P<0.01). Conclusion At present, pregnant women exercise mode is unitary during pregnancy.Doctors and nurses should advocate more on health education for them, and family members should be involved in health education program as well.We should improve the education health system and give full play to the advantages of the Internet, train obstetricians, nutritionists, community doctors and other weight management professionals, improve service capabilities, and instruct pregnant women to choose safe and effective exercise during pregnancy.

Exercise behavior and its relevant factors in 3 099 pregnant women during pregnancy / 上海预防医学

Objective To investigate the current situation of the exercise, relevant knowledge and impact factors in pregnant women during pregnancy, providing references to instruct pregnant women to do suitable exercise. Methods Self-designed questionnaires were used to investigate the exercise behavior and cognition in 3 099 pregnant women who visited the clinic for first-time prenatal examination at Jiading District of Shanghai. Results It was found in investigation that 65.21% pregnant women often did exercise, of whom 29.14% did less than 20 minutes exercise every time, while 60.96% did 20 to 40 minutes, and 9.90% did more than 40 minutes.Slow-walking was the majority choice, which counted for 87.14% in pregnant women.And 34.79% pregnant women did not do exercise, mainly due to "wouldn't like to do exercise" or "don't have time for it".Age, body mass index (BMI), educational level with the pregnant women as well as their husbands impact factors related to their exercise behavior during pregnancy (P<0.01). Conclusion At present, pregnant women exercise mode is unitary during pregnancy.Doctors and nurses should advocate more on health education for them, and family members should be involved in health education program as well.We should improve the education health system and give full play to the advantages of the Internet, train obstetricians, nutritionists, community doctors and other weight management professionals, improve service capabilities, and instruct pregnant women to choose safe and effective exercise during pregnancy.

Isolation and characterization of a novel strain (YH01) of Micropterus salmoides rhabdovirus and expression of its glycoprotein by the baculovirus expression system / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

As one of the most important aquatic fish, Micropterus salmoides suffers lethal and epidemic disease caused by rhabdovirus at the juvenile stage. In this study, a new strain of M. salmoides rhabdovirus (MSRV) was isolated from Yuhang, Zhejiang Province, China, and named MSRV-YH01. The virus infected the grass carp ovary (GCO) cell line and displayed virion particles with atypical bullet shape, 300-500 nm in length and 100-200 nm in diameter under transmission electron microscopy. The complete genome sequence of this isolate was determined to include 11 526 nucleotides and to encode five classical structural proteins. The construction of the phylogenetic tree indicated that this new isolate is clustered into the Vesiculovirus genus and most closely related to the Siniperca chuatsi rhabdovirus. To explore the potential for a vaccine against MSRV, a glycoprotein (1-458 amino acid residues) of MSRV-YH01 was successfully amplified and cloned into the plasmid pFastBac1. The high-purity recombinant bacmid-glycoprotein was obtained from DH10Bac through screening and identification. Based on polymerase chain reaction (PCR), western blot, and immunofluorescence assay, recombinant virus, including the MSRV-YH01 glycoprotein gene, was produced by transfection of SF9 cells using the pFastBac1-gE2, and then repeatedly amplified to express the glycoprotein protein. We anticipate that this recombinant bacmid system could be used to challenge the silkworm and develop a corresponding oral vaccine for fish.

Scientific assessment of physical growth and development in children / 中国实用儿科杂志

The weight development can be used to indicate children's nutritional status. But the assessment of stature development in children is more complicated,which involves genetics,endocrine,nutrition and bone metabolism. Parents should regularly follow up on the growth and development of children. At the same time,the growth data of children should be kept by parents. Pediatricians can obtain important information from the child's development history to help assessment and diagnosis. Before dealing with this thorny problems of social and medical confusion,primary care pediatricians(PCP)should learn the knowledge of height growth during childhood,including the normal range and rules of height growth. Meanwhile,PCP need to understand the factors affecting the height growth in order to make proper management.

Role of MBP-1 in proliferation, apoptosis and invasion of human esophageal cancer cells Ec109 / 重庆医学

Objective To investigate the role of MBP-1 in proliferation,apoptosis and invasion of human esophageal cancer cells Ec109.Methods The human esophageal cancer cells Ec109 were cultured,and divided into the MBP-1 mimics group,siRNA-MBP-1 group,negative control group and blank control group.The cell proliferation activity of each group was detected by tetrazolium blue (MTT) method;flow cytometry was used to detect cell apoptosis and cell cycle;Transwell assay was used to detected the invasion ability and the expressions of cellular cycle related C-myc,Cyclin D1 and Cyclin E were detected by western blot.Results Compared with the negative control group and blank control group,the expression of MBP-1 in esophageal cancer cells Ec109 of the MBP-1 mimics group was up-regulated (P＜0.05),the proliferation ability of esophageal cancer cells was decreased,increased the proportion of apoptosis,decreased the proportion of G0/G1 phase cells,inhibited the number of invasive cells was decreased and the expressions of C-myc,Cyclin D1 and Cyclin E proteins.After silencing MBP-1,the expression of MBP-1 in esophageal cancer cells Ec109 in the siRNA-MBP-1 group was down-regulated,the proliferation ability of esophageal cancer cells was increased,the proportion of apoptosis was decreased,the proportion of G0/G1 phase cells was increased.the number of invasive cells was increased and the expressions of C-myc,Cyclin D1 and Cyclin E proteins were up-regulated.Conclusion MBP-1 is closely correlated with the cell proliferation,cell apoptosis and invasion ability of human esophageal cancer cell line Ec109,and its mechanism might be related to cell cycle abnormality.

Investigation on Signal Acquisition and Data Processing of A Fourier Transform Microwave Spectrometer / 分析化学

As one of the most important laboratory tools for the research of quantum chemistry and astrochemistry, a microwave spectrometer can make accurate measurement of molecular spectra arising from rotational transitions. Fourier transform microwave (FTMW) spectrometers, in many cases, require down-conversion mixing plans by using mixers to bring the molecular signal down for A/D sampling, and multiple signal averaging to improve the signal/noise ratio as well. Two detection schemes, homodyne and heterodyne detection modes,were proposed in this project along with two data processing plans, averaging in the time domain and averaging in the frequency domain,to develop efficient,sensitive and accurate detection solutions for molecular rotational spectroscopy. With 0. 5% OCS gas in argon as standard sample, verification experiment was conducted with frequency difference between LO and cavity resonance at 200 MHz and 0.4 MHz. The experimental results indicate that, the heterodyne detection method can provide better sensitivity than the homodyne scheme, but with increased cost for more devices, while the time-domain averaging can obtain much better signal-to-noise ratio than frequency-domain averaging,but with stronger data processing capacity and more time required.

Updated evaluation and intervention of adolescent varicocele / 中华男科学杂志

Some physiological and ethical problems make it difficult to obtain semen samples from adolescents with varicocele (VC) and to directly evaluate their fertility. Therefore we can only rely on indirect methods to assess the influence of VC on the future fertility of the adolescent patients. Most of the VC adolescents may have normal semen parameters in the adulthood. Thus whether and when to intervene in adolescent VC remain a controversy in andrology. Physical examination is the most common method for screening adolescent VC and ultrasonography is very effective for its diagnosis and evaluation. Other important diagnostic indicators include the widely accepted testicular atrophy index, recently proposed peak retrograde venous flow, total testis volume, and scrotal temperature. Based on the latest literature, this review offers some proposals for the evaluation and intervention of adolescent VC.

Phenotypic Tfh development promoted by CXCR5-controlled re-localization and IL-6 from radiation-resistant cells

How follicular T-helper (Tfh) cells develop is incompletely understood. We find that, upon antigen exposure in vivo, both naïve and antigen-experienced T cells sequentially upregulate CXCR5 and Bcl6 within the first 24 h, relocate to the T-B border, and give rise to phenotypic Bcl6(+)CXCR5(+) Tfh cells before the first cell division. CXCR5 upregulation is more dependent on ICOS costimulation than that of Bcl6, and early Bcl6 induction requires T-cell expression of CXCR5 and, presumably, relocation toward the follicle. This early and rapid upregulation of CXCR5 and Bcl6 depends on IL-6 produced by radiation-resistant cells. These results suggest that a Bcl6(hi)CXCR5(hi) phenotype does not automatically define a Tfh lineage but might reflect a state of antigen exposure and non-commitment to terminal effector fates and that niches in the T-B border and/or the follicle are important for optimal Bcl6 induction and maintenance.

A Meta-analysis of tubular stomachversus whole stomach for digestive tract reconstruction / 中国组织工程研究

BACKGROUND:Over the past 10 years, scholars have proposed the tubular stomach as an alternative to the whole stomach for digestive tract reconstruction; however, its occurrence rate of postoperative complications has been controversial. OBJECTIVE:To evaluate the clinical efficacy of tubular stomach versus whole stomach for digestive tract reconstruction in the resection of esophageal carcinoma. METHODS: The randomized controled trials about tubular stomach for digestive tract reconstruction in the resection of esophageal carcinoma were searched from PubMed, OVID, CNKI, EBSCO, Science online, Wangfang, Super Star Digital Library, CMB, Baidu and Google search engines. Two searchers screened studies based on the included criteria strictly. Literature quality and bias risk were assessed according to the criteria of Cochrane Colaboration, GRADEprofiler3.6.1 software was used for evaluation of the quality grade, and Revman5.3 for data management and statistical analysis. RESULTS AND CONCLUSION:Totaly 12 randomized controled trials including 4 137 patients were enroled. Compared with the whole stomach group, in the tubular stomach group, the incidences of reflux esophagitis and thoracic stomach syndrome were significantly lower, but there was no difference in the incidences of anastomotic leakage and anastomotic stenosis between the two groups. These findings indicate that the tubular stomach as a substitute of the whole stomach for digestive tract reconstruction in the resection of esophageal carcinoma is a safe and effective. However, the literatures included are only in English and Chinese, and there is publication bias and smal sample size. Therefore, the large-sample high-quality clinical randomized controled trials are stil needed for further confirmation.

Research advance in assessment of nutritional status of children / 中国当代儿科杂志

Malnutrition is not a simple disease, which occurs in the condition when the body does not get the right amount of nutrients to maintain healthy tissues and organ functions. Malnutrition generally refers both to undernutrition and overnutrition, but usually it is used to refer solely to a deficiency of nutrition. Infants and young children are the most vulnerable because of their high nutritional requirements for growth and development. Growth is an important indicator of health and nutritional status of a child. Generally, underweight, studding and wasting are used as the indicators of malnutrition. In fact, a gain in height is a better indicator of the adequacy of a diet than a gain in weight. Rates of weight gain needs to accompany accelerated height gain to maintain normal body proportions (weight-for-height). Now therefore WHO recommends using weight-for-height as the indicator of malnutrition of epidemic intensity in communities and of nutritional condition evaluation, including treatment assessment. The assessment of nutritional status is commonly summarized by the mnemonic "ABCD," which stands for anthropometric measurement (A), biochemical or laboratory tests (B), clinical indicators (C) and dietary assessment (D). Children with malnutrition are required to ingest more than 30 essential nutrients including both functional, protective nutrients (type I) and growth nutrients (type II), in order to have a catch-up growth in weight and height.

Protective effect of HMGB1 gene silence on astrocyte injury caused by oxygen-glucose deprivation/reoxygenation / 解放军医学杂志

Objective To investigate the protective effect of high mobility group box 1 (HMGB1) gene silence on astrocyte injury caused by oxygen-glucose deprivation/reoxygenation (OGD/R) in vitro. Methods Astrocytes were divided into control group, OGD/R group and HMGB1 siRNA group. Astrocytes in OGD/R group were cultured with glucose free DMEM under 1% O2 condition, then they were treated with OGD for 2, 4 and 6h respectively, and then reoxygenated for 24h. In HMGB1 siRNA group, astrocytes that transfected with HMGB1 small interference RNA (siRNA) lentivirus-vector were treated with OGD 6h, and then reoxygenated for 24h. After 24h reoxygenation, the mRNA and protein expression of HMGB1 in the astrocytes were determined by RT-PCR and Western blotting. HMGB1 protein in culture supernatant of astrocytes was determined by ELISA. The cell injury and survival rate were assessed by LDH activity (LDH%) and MTT assay. Results Compared with the astrocytes without transfection of HMGB1 siRNA lentivirus-vector, the protein expression of HMGB1 was suppressed by siRNA. Compared with the control group, with prolongation of the OGD time, the mRNA and protein expression of HMGB1 increased gradually (P<0.05) after OGD/R, and it further increased with elapse of time. OGD resulted in significant injuries with time extention, and the LDH% increased (P<0.05) with marked lowering of survival rate (P<0.05). Compared with the OGD/R group, cell injury in HMGB1 siRNA group alleviated remarkably, and survival rate was elevated significantly (P<0.01). Conclusion The expression of HMGB1 in astrocytes can be inhibited by siRNA, and over-expression of HMGB1 might be an important factor in OGD/R-induced cell injury.

Clinical application of the disposable circumcision suture device in male circumcision / 中华男科学杂志

<p><b>OBJECTIVE</b>To investigate the safety and efficiency of the disposable circumcision suture device (DCSD) in the surgical treatment of phimosis and redundant prepuce.</p><p><b>METHODS</b>We randomly assigned 249 outpatients with phimosis or redundant prepuce to be treated with DCSD (n = 129) and by conventional circumcision (CC, n = 120), respectively. Then we compared the safety and efficiency of the two strategies.</p><p><b>RESULTS</b>Comparisons between DCSD and CC showed that the operation time was (4.02 +/- 0.69) vs (30.8 +/- 4.05) min, blood loss was (1.07 +/- 1.29) vs (8.72 +/- 2.15) ml, intraoperative pain score was 0.81 +/- 0.81 vs 2.42 +/- 1.15, 24-hour postoperative pain score was 1.84 +/- 1.02 vs 4.99 +/- 1.36, postoperative complication rate was 13. 95% (18/129) vs 9.17% (11/120), wound healing time was (13.99 +/- 9.06) vs (17.48 +/- 3.49) d, satisfaction with the penile appearance was 98.4% (127/129) vs 95% (109/120), and treatment cost was (2215.62 +/- 17.67) vs (576.47 + 15.58) Y RMB. DCSD exhibited obvious superiority over CC for shorter operation time, less blood loss, milder intraoperative pain, sooner wound healing, and better penile appearance, but it also had a higher rate of postoperative complications (P > 0.05) and involved more treatment cost than the latter (P < 0.05).</p><p><b>CONCLUSION</b>The disposable circumcision suture device affords ideal clinical effects and therefore deserves clinical popularization.</p>