【摘要】目的：探讨多元化健康宣教在幽门螺旋杆菌（Hp）感染碳13（13C）呼气试验筛查中的应用效果。方法：将2024年5月~2026年4月至我院体检科进行无痛胃肠镜检查后，结果提示Hp阳性的300例患者作为研究对象，开展前瞻性临床试验。经数字表法将入组患者随机列为常规组和试验组，每组150例。两组患者均行13C呼气试验，常规组检查前实施常规健康宣教，试验组检查前实施多元化健康宣教，比较两组患者的心理状态，准备情况，检查情况及整体满意度。结果：试验组的疾病不确定感（MUIS）评分、广泛性焦虑量表-7（GAD-7）评分均低于常规组（t=7.644，10.923；P＜0.05）。试验组的药物停用依从率、饮食依从率、空腹依从率分别92.00%（138/150）、93.33%（140/150）、96.67%（145/150），均高于常规组[80.00%（120/150）、81.33%（122/150）、85.33%（128/150）]（x2=8.970，9.763，11.762；P＜0.05）。试验组的吹气一次成功率、肺泡气样本质量达标率、检查完成率、检查结果准确率分别为94.67%（142/150）、94.00%（141/150）、96.67%（145/150）、96.00%（144/150），均高于常规组[82.67%（124/150）、83.33%（125/150）、84.67%（127/150）、84.00%（126/150），]（x2=10.748，8.492，12.763，12.000；P＜0.05）。试验组的心理舒适、信息获取、检查流畅、结果可靠满意度评分均高于常规组（t=5.279，4.625，4.592，5.729；P＜0.05）。结论：多元化健康宣教可改善Hp感染患者的心理状态，并优化13C呼气试验的准备情况、检查情况，对提升检查结果准确性及患者满意度均有积极影响
[Abstract]Objective:Exploring the application effect of diversified health education in screening for Hp infection with 13C breath test.Methods:A prospective clinical trial will be conducted on 300 patients who were found to be Hp positive after undergoing painless gastroscopy in our hospital from May 2024 to April 2026. The enrolled patients were randomly divided into a control group and an experimental group using a numerical table method, with 150 cases in each group. Both groups of patients underwent 13C breath tests. The routine group received routine health education before the examination, while the experimental group received diversified health education before the examination. The psychological status, preparation, examination results, and overall satisfaction of the two groups of patients were compared.Results:Compare to the control group,the experimental group had lower MUIS scores and GAD-7 scores (t=7.644，10.923; P<0.05). The medication discontinuation compliance rate, dietary compliance rate, and fasting compliance rate of the experimental group were 92.00% (138/150), 93.33% (140/150), and 96.67% (145/150), respectively, all higher than those of the conventional group [80.00% (120/150), 81.33% (122/150), 85.33% (128/150)] (x2=8.970，9.763，11.762; P<0.05). The success rate of one-time blowing, the quality compliance rate of alveolar gas samples, the completion rate of examination, and the accuracy of examination results in the experimental group were 94.67% (142/150), 94.00% (141/150), 96.67% (145/150), and 96.00% (144/150), respectively, which were higher than those in the conventional group [82.67% (124/150), 83.33% (125/150), 84.67% (127/150), 84.00% (126/150)] (x2=10.748，8.492，12.763，12.000; P<0.05). Compare to the control group,the experimental group had higher satisfaction scores of psychological comfort, information acquisition, smooth examination, and reliable results (t=5.279，4.625，4.592，5.729; P<0.05).Conclusion:Diversified health education can improve the psychological state of Hp infected patients, optimize the preparation and examination of 13C breath tests, and have a positive impact on improving the accuracy of examination results and patient satisfaction.
目的 通过生物信息学手段筛选非小细胞肺癌（NSCLC）中的关键靶点基因，识别预后标志物NDC80，并探讨其在NSCLC中的表达意义，进而分析NDC80作为NSCLC基因治疗靶点的可行性。方法 采用癌症基因组图谱（TCGA）TCGA数据库检索NSCLC相关数据，进行加权基因共表达网络分析（WGCNA）以识别关键基因，并进行差异表达分析、相关性分析和蛋白互作网络构建。对筛选出的关键基因进行功能分析。利用免疫组化染色法检测癌组织及癌旁组织中NDC80蛋白的表达水平，并进一步探究其与临床病理特征的关系。采用Kaplan-Meier法分析NDC80表达与NSCLC患者无进展生存时间（PFS）的关系。结果 共筛选出20个与NSCLC高度关联的关键基因，包括CDC20、CDK1、MCM4、CDC6、MCM2、PLK1、NDC80、CCNB1、CDC45、AURKA、MCM8、BUB1、CDT1、ORC1、CCNA2、CASC5、MAD2L1、BUB1B、CENPA、AURKB。免疫组化验证显示，NDC80蛋白在NSCLC组织中高表达，其在NSCLC组（阳性表达率88.6%）显著高于癌旁组（50.0%）（P＜0.05）。NDC80蛋白的阳性表达率在TNM分期（Ⅲ期+Ⅳ期）、低分化、淋巴结转移的NSCLC组高于TNM分期（Ⅰ期+Ⅱ期）、高分化及中分化以及未发生淋巴结转移的NSCLC组（P＜0.05）。NDC80蛋白的阳性表达率在不同性别、年龄、病灶大小分类的NSCLC组织中无显著差异（P＞0.05）。Kaplan-Meier分析显示，NDC80蛋白高表达组的PFS中位数为（9.00±0.27）个月，明显低于低表达组（11.00±0.79）个月（P＜0.05）。结论 本研究发现的关键基因在NSCLC干细胞的维持中发挥重要作用。免疫组化结果显示，NDC80蛋白在NSCLC组织中高表达，且与肿瘤分化、TNM分期及淋巴结转移密切相关。NDC80蛋白高表达组的PFS明显低于低表达组，提示NDC80可能成为NSCLC筛查、治疗和预后评估的潜在生物标志物。
Objective To screen the key target genes in non-small cell lung cancer（NSCLC）by bioinformatics，identify the prognostic marker NDC80，and explore its expression significance in NSCLC，so as to analyze the feasibility of NDC80 as a gene therapy target for NSCLC．Methods TCGA database was used to retrieve NSCLC-related data，and weighted gene co-expression network analysis（WGCNA）was used to identify key genes，and differential expression analysis，correlation analysis and protein-protein interaction network construction were carried out．The function of the selected key genes was analyzed．Immunohistochemical staining was used to detect the expression level of NDC80 protein in cancer tissues and adjacent tissues，and to further explore its relationship with clinicopathological features．Kaplan-Meier method was used to analyze the relationship between NDC80 expression and progression-free survival （PFS）of NSCLC patients．Results A total of 20 key genes highly associated with NSCLC were screened out，which were CDC20，CDK1，MCM4，CDC6，MCM2，PLK1，NDC80，CCNB1，CDC45，AURKA，MCM8，BUB1，CDT1，ORC1，CCNA2，CASC5，MAD2L1，BUB1B and CENPA．Immunohistochemical verification showed that NDC80 protein was highly expressed in NSCLC tissue，and its positive expression rate in NSCLC group（88.6%）was significantly higher than that in adjacent cancer group（50.0%，P＜0.05）．The positive expression rate of NDC80 protein in NSCLC with TNM staging（Ⅲ+Ⅳ），low differentiation and lymph node metastasis was higher than that in NSCLC with TNM staging（Ⅰ+Ⅱ），high differentiation and moderate differentiation and no lymph node metastasis（P＜0.05）．There was no significant difference in the positive expression rate of NDC80 protein among NSCLC tissues with different gender，age and lesion size（P＞0.05）．Kaplan-Meier analysis showed that the median PFS of high expression group of NDC80 protein was（9.00±0.27）months，which was significantly lower than that of low expression group（11.00±0.79）months（P＜0.05）．Conclusions The key genes found in this study play an important role in the maintenance of NSCLC stem cells．Immunohistochemical results showed that NDC80 protein was highly expressed in NSCLC，and it was closely related to tumor differentiation，TNM staging and lymph node metastasis．The PFS of high expression group of NDC80 protein was significantly lower than that of low expression group，suggesting that NDC80 may become a potential biomarker for screening，treatment and prognosis evaluation of NSCLC．
目的 探讨唐氏综合征血清学筛查风险值异常孕妇选择接受无创产前基因检测（NIPT）的影响因素,为临床制定对应策略提供参考依据。方法 选取2022年1月—2022年12月唐氏综合征血清学筛查风险值异常孕妇229例,根据是否接受NIPT分为接受组（195例）与不接受组（34例）。收集两组临床资料,采用Lasso-Logistic回归分析唐氏综合征血清学筛查风险值异常孕妇接受NIPT的影响因素。结果 单因素分析显示,年龄、文化水平、居住地、家庭平均月收入、孕前优生优育检查、孕前合并生殖相关疾病、受孕方式、不良孕产史、家族史、补充叶酸、配偶意愿、NIPT认知水平、血清学风险等级是血清学筛查异常孕妇接受NIPT的影响因素（P<0.05）;Lasso回归分析筛选出7个变量,分别为年龄、文化水平、家庭平均月收入、不良孕产史、家族史、NIPT认知水平、血清学风险等级;Logistic回归分析,年龄（OR=6.269,95%CI：2.413~16.285）、文化水平（OR=4.119,95%CI：1.627~10.430）、家庭平均月收入（OR=5.102,95%CI：2.067~12.594）、不良孕产史（OR=5.247,95%CI：1.833~15.021）、家族史（OR=7.416,95%CI：2.952~18.629）、NIPT认知水平（OR=5.751,95%CI：2.338~14.146）、血清学风险等级（OR=7.866,95%CI：3.057~20.238）是血清学筛查异常孕妇接受NIPT的影响因素（P<0.05）。结论 唐氏综合征血清学筛查风险值异常孕妇选择接受NIPT的影响因素较多,包括年龄、文化水平、家庭平均月收入、不良孕产史、家族史、NIPT认知水平、血清学风险等级,能为临床提高NIPT接受度提供指导信息。
Objective To explore the influencing factors of noninvasive prenatal testing（NIPT）for pregnant women with abnormal risk value of serological screening for Down syndrome,and to provide reference for clinical development of corresponding strategies．Methods A total of 229 pregnant women with abnormal serological screening risk values for Down syndrome from January 2022 to December 2022 were selected and divided into acceptance group（195 cases）and non-acceptance group（34 cases）according to whether they received NIPT．The clinical data of the two groups were collected and Lasso-Logistic regression was used to analyze the factors influencing the acceptance of NIPT in pregnant women with abnormal serological screening risk value for Down syndrome．Results In single factor analysis,age,education level,place of residence,average monthly family income,pre-pregnancy and childbearing examination,pre-pregnancy combined with reproductive diseases,conception method,adverse pregnancy history,family history,folic acid supplementation,spouse intention,NIPT cognition level and serological risk grade were the influencing factors for the acceptance of NIPT in pregnant women with abnormal serological screening（P<0.05）．Seven variables were selected by Lasso regression analysis,which were age,education level,average monthly family income,adverse pregnancy history,family history,NIPT cognition level and serological risk level．Logistic regression analysis showed that age（OR=6.269,95%CI：2.413-16.285）,education level（OR=4.119,95%CI：1.627-10.430）,average monthly family income（OR=5.102,95%CI：2.067-12.594）,adverse pregnancy history（OR=5.247,95%CI：1.833-15.021）,family history（OR=7.416,95%CI：2.952-18.629）,NIPT cognitive level（OR=5.751,95%CI：2.338-14.146）and serological risk level（OR=7.866,95%CI：3.057-20.238）were independent influencing factors for NIPT acceptance in pregnant women with abnormal serological screening（P<0.05）．Conclusions There are many influencing factors for pregnant women with abnormal serological screening risk value to accept NIPT,including age,education level,average monthly family income,adverse pregnancy history,family history,NIPT cognition level,serological risk grade,etc．,which can provide guidance information for clinical improvement of NIPT acceptance．
目的 初步探讨无创产前基因检测（NIPT）筛查胎儿患猫叫综合征临床性能。方法 收集2018年4月—2019年3月行NIPT提示胎儿患猫叫综合征高风险的孕妇,并收集其羊水细胞培养染色体核型分析或微阵列芯片检测结果,分析NIPT与羊水产前诊断结果的符合率。结果 NIPT提示猫叫综合征病例11例,孕妇均接受了羊水穿刺,染色体核型分析或微阵列芯片检测出胎儿染色体异常6例,符合率为54.5%。结论 NIPT对胎儿猫叫综合征的筛查具有临床价值,当提示高风险时必须行有创性产前诊断。
Objective To investigate the value of non-invasive prenatal testing（NIPT）for the screening of fetal Cri du Chat Syndrome（CdCS）. Methods Pregnant women who accepted NIPT with the results with high risk of fetal CdCS were selected in the study from April 2018 to March 2019．They were also accepted prenatal genetic counseling and the chromosome karyotype analysis or CMA detection of amniotic fluid cell culture．The coincidence rate of NIPT with chromosome karyotype and microarray analysis results were conducted. Results There were 11 cases with high risk of fetal CdCS in NIPT．All of them had received amniocentesis chromosome karyotype or microarray analysis,6（54.5%）cases were confirmed. Conclusions NIPT has some clinical value in screening fetal CdCS from maternal blood．Therefore,it was suggested to perform the invasive chromosomal karyotyping and CMA for high risk of fetal CdCS．
目的 探讨高分辨率低剂量CT（HRLDCT）在无症状健康体检者筛查肺部疾病和肺外病变的应用价值。方法 回顾性分析于2011年1月—2021年12月在广州市第一人民医院行胸部HRLDCT检查的1 940例无症状健康体检者的影像学资料,由两位研究者分别评估和记录所有受检者的每一个阳性CT病征征象,分析各个阳性CT征象在总受检人群中的检出情况、各个阳性CT征象在性别、年龄分层中的分布情况,以及肺外阳性CT征象检出情况。比较肺癌和肺良性结节在不同性别、不同年龄段分布中的检出情况。结果 共有1 831例受检者存在阳性CT征象,总检出率为94.38%,共检出3 339个阳性CT征象。检出率最高的阳性CT征象是肺部良性结节（1 630例,84.02%）。在973例男性受检者中,检出肺癌22例（2.26%）,肺良性结节 815例（83.73%）;在967例女性受检者中,检出肺癌19例（1.96%）,肺良性结节815例（84.28%）,肺癌与肺良性结节在不同性别间的检出率比较差异无统计学意义（P=0.64,χ2=0.214）。肺部阳性CT征象的检出率随年龄的增长而升高,肺癌与肺良性结节最多见于51~60岁受检人群中,两者在51~60岁和61~70岁中的检出率比较差异有统计学意义（P=0.038,χ2=4.32）。此外,检出最多的肺外其他阳性CT征象为脂肪肝,共497例（25.62%）,其次是冠状动脉钙化173例（8.90%）。结论 HRLDCT在胸部的健康体检中可同时用于肺部疾病的筛查及发现肺外异常征象,具有较高的临床应用价值。
Objective To investigate the application value of high-resolution low-dose CT（HRLDCT）in screening for lung diseases and extra-pulmonary lesions in asymptomatic healthy individuals．Methods A retrospective analysis was performed on the images of 1 940 asymptomatic healthy individuals who underwent chest HRLDCT examination in our hospital from January 2011 to December 2021．Two investigators conducted independent evaluations and recordings of each positive CT sign in all individuals．An analysis of the detection rates of positive CT signs in the entire population,examining their distribution across various gender and age groups was involved in this study．The detection of positive CT signs outside the lung was also investigated．Additionally,the comparative analysis of lung cancer and benign pulmonary nodules detection across various genders and age cohorts were performed．Results A comprehensive count of 1831 individuals exhibited positive CT signs,resulting in an overall detection rate of 94．38%,with identifying a total of 3339 positive CT signs．The positive CT sign with the highest detection rate was benign pulmonary nodule（1 630 cases,84.02%）．In 973 male participants,22 cases of lung cancer were detected（2.26%）,and 815 cases of benign lung nodules were found（83.73%）．In 967 female participants,19 cases of lung cancer were detected（1.96%）,and 815 cases of benign lung nodules were identified（84.28%）．Statistical analysis revealed no significant difference in the detection rates of lung cancer and benign lung nodules between genders（P=0.64,χ2=0.214）．The prevalence of positive CT signs in the lungs demonstrates an upward trend with advancing age．Notably,individuals aged 51-60 exhibit a higher incidence of lung cancer and benign lung nodules．A statistically significant disparity in the detection rates of these conditions is observed between the 51-60 and 61-70 age cohorts（P=0.038,χ2=4.32）．In addition,the most frequently detected extrapulmonary positive CT findings were fatty liver,with a total of 497 cases（25.62%）,followed by coronary artery calcification with 173 cases（8.90%）．Conclusion sHRLDCT can be effectively employed in the screening of pulmonary conditions and identification of extra-pulmonary abnormalities during thoracic health assessments,demonstrating considerable clinical significance．
目的 探讨鳞状上皮细胞抗原（SCCA）、人乳头瘤病毒（HPV）-DNA联合阴道镜检查在宫颈鳞状细胞癌（SCC）筛查中的应用价值。方法 选择2019年1月1日—2021年12月31日在中山市博爱医院就诊并确诊为SCC的妇女作为研究对象,共纳入100例SCC患者（SCC组）,同时选择200例经活检确诊为宫颈慢性炎症的患者（宫颈慢性炎症组）作为阴性对照。采用阴道镜观察研究对象的宫颈情况,并采集研究对象的宫颈组织标本进行HPV-DNA检测。采集研究对象的静脉血,采用化学发光免疫法测定研究对象SCCA的水平。以病理检查结果为金标准,分别对HPV-DNA检测、外周血SCCA两者联用以及阴道镜、HPV-DNA检测、外周血SCCA三者联用进行筛查效果的评价。结果 SCC组研究对象的年龄≥40岁者、出血者、性生活开始年龄≤20岁者比例均高于宫颈慢性炎症患者组;而宫颈慢性炎症患者组疼痛的比例高于SCC患者组,差异均有统计学意义（P<0.01）。χ2检验结果显示,SCC组研究对象的SCCA阳性率高于宫颈慢性炎症组（P<0.001）。阴道镜结合SCCA、HPV-DNA检测筛查SCC的灵敏度和特异度均高于单独使用SCCA和HPV-DNA,并取得较好的约登系数（75%）和Kappa值（0.730）。结论 采用阴道镜结合HPV-DNA、SCCA可有效提高SCC疾病的约登系数与Kappa值,其联合诊断的效能高于单独使用阴道镜、HPV-DNA或SCCA诊断SCC。
Objective To study the application value of squamus cell carcinoma antigen（SCCA）and human papillomavirus（HPV）-DNA combined with colposcope in cervical squamous cell carcinoma（SCC）screening．Methods Women diagnosed with SCC who visited Boai Hospital of Zhongshan city from January 1,2019 to December 31,2021 were selected as research subjects,including 100 patients with SCC（SCC group）and 200 patients with chronic cervical inflammation confirmed by biopsy（chronic cervical inflammation group）．The cervix of the subjects was observed by colposcope,and cervical tissue samples were collected for HPV-DNA testing．Venous blood of subjects was collected and SCCA levels were determined by chemiluminescence immunoassay．Using pathological examination results as the gold standard,the screening effect of combination HPV-DNA test and peripheral blood SCCA test,combination colposcope,HPV-DNA test and peripheral blood SCCA were evaluated respectively．Results In SCC group,the proportion of age≥40 years old,bleeding,sexual life age ≤20 years old were higher than those in chronic cervical inflammation group,but chronic cervical inflammation group had higher rate of pain than those in SCC group（P<0.01）by Chi-square test．SCCA positive rate in SCC group was higher than that in chronic cervical inflammation group（P<0.001）by Chi-square test．The sensitivity and specificity of colposcope combined with SCCA and HPV-DNA were higher than those of SCCA and HPV-DNA alone,and better Youden’s coefficient（75%）and Kappa value（0.730）were obtained．Conclusions Colposcope combined with HPV-DNA and SCCA can effectively improve the Youden’s coefficient and Kappa value of SCC disease,and its combined diagnosis efficiency was higher than that of colposcope,HPV-DNA and SCCA alone in the diagnosis of SCC,which has high clinical promotion significance．
目的 研究抗体筛查阳性输血患者的抗体与Rh抗原分布情况。方法 收集2019年10月1日—2022年12月31日中山大学孙逸仙纪念医院34 796例患者的不规则抗体筛查结果,以及抗体筛查阳性患者的抗体鉴定与Rh抗原分型结果,记录34 796例患者的年龄、性别、妊娠史、输血史等基本资料,分析各血型系统不规则抗体产生的阳性率及相关影响因素。结果 34 796例患者中,不规则抗体筛查阳性的患者237例,抗体筛查阳性率为0.68%。共检出不规则抗体260例,其中MNS系统83例（占31.93%）,Rh血型系统抗体70例（占26.93%）,Lewis血型系统14例（占比5.39%）。同种非特异性抗体79例,阳性率30.38%。同种特异性抗体中抗-E的占比最高,为20.77%;其次是抗-Mia,为20.39%。对237例抗体筛查阳性患者进行Rh抗原分型,CCDee抗原表型占比最高,为52.74%,其次是CcDEe占比29.16%。抗体筛查阳性率与性别、输血史、妊娠史有关,女性、有输血史、有妊娠史者的抗体筛查阳性率较高（P>0.05）。不同科室间抗体筛查阳性率比较差异有统计学意义（P>0.05）,其中风湿免疫科与血液科患者阳性率最高。结论 抗-E、抗-Mia为主要的红细胞不规则抗体,不规则抗体的产生与性别、输血史、妊娠史有关,输血前进行不规则抗体筛查、鉴定及Rh抗原分型,有利于提高输血安全。
Objective To explore the distribution of antibodies and Rh antigens in transfusion patients with positive antibodies screened in our hospital．Methods From October 1,2019 to December 31,2022,there were 34,796 patients undergoing irregular antibody screening in Sun Yat-sen Memorial Hospital of Sun Yat-sen University,antibody identification and Rh blood typing results of positive patients were collected．Meanwhile,the age,sex,pregnancy history,blood transfusion history and other basic data of 34 796 patients were collected,and the positive rate of irregular antibody production and related influencing factors of blood group system were analyzed．Results Among the 34,796 patients,237 patients were screened positive for irregular antibodies,and the antibody screening positivity rate was 0.68%．A total of 260 cases of irregular antibodies were detected,83 cases of MNS system,accounting for 31.93%;70 cases of Rh blood group system,accounting for 26.93%;14 cases of Lewis blood group system,accounting for 5.39%．There were 79 cases of homozygous non-specific antibodies,with a detection rate of 30.38%．The highest percentage of homo-specific antibodies was anti-E,accounting for 20.77%,followed by anti-Mia,accounting for 20.39%．Rh antigen typing was performed in 237 antibody-screening positive patients,and the highest percentage of CCDee antigen phenotype was 52.74%,followed by CcDEe with 29.16%．Antibody screening positive rate was correlated with gender,blood transfusion history and pregnancy history,and the positive rate was higher in female,patients with blood transfusion history and pregnancy history,and the difference was statistically significant（P>0.05）．There were differences in the positive detection rate of antibody-screening in different departments,and the differences were statistically significant（P>0.05）,and the highest positive rates were in Department of Rheumatology and Immunology and Hematology．Conclusions Anti-E,anti-Mia are the main erythrocyte irregular antibodies,and the production of irregular antibodies is related to gender,transfusion history and pregnancy history,and irregular antibody screening,identification and Rh antigen typing before transfusion are beneficial to improve transfusion safety．
目的 本文旨在对全流程的生物安全管理问题进行梳理,为未来出现的大规模核酸筛查提供参考。方法 我们参考技术规范及其他医疗机构的实践总结,结合自身实际经验,梳理了核酸采集场所、个人防护、标本采集转运检测流程共3个方面的生物安全管理需注意的问题及解决措施。严格要求采样队伍按标准要求执行,以达到保质保量完成筛查任务的目的。结果 新冠核酸筛查期间我院共外派采集标本361 841人次。标本零污染零丢失,未发生一例生物安全事件,圆满完成采样任务。结论 大规模新冠核酸筛查是查清疫情源头、抑制疫情蔓延的重要手段。为了保证全流程的生物安全,应做好充足准备,严格落实各项生物安全措施。
Objective This article aims to sort out the problems in the whole process of biosafety management and provide reference for large-scale nucleic acid screening in the future. Methods We refer to the technical guidelines and the practice of other medical institutions, combined with our practical experience, summarized the problems and solutions needing attention in biosafety management in three aspects: nucleic acid sampling place, personal protection and the process from sample collection to detection. The sampling team was strictly required to implement the standard requirements, so as to complete the screening task with quality and quantity. Results A total of 361 841 samples were collected during SARS-CoV-2 nucleic acid screening. No samples were contaminated or lost, and no biosafety accident occurred. The sampling task were successfully completed. Conclusion Large-scale SARS-CoV-2 nucleic acid screening is an important method to find out the source of the epidemic and curb the spread of the SARS-CoV-2 pandemic. In order to ensure the biosafety of the whole process, sufficient preparations should be made and biosafety measures should be strictly implemented.
目的 探讨广州地区儿童2019新型冠状病毒(2019 novel coronavirus, 2019-nCoV)感染筛查/疑似病例的流行病学特点、发病特点、可能的原因及防控建议。方法 回顾性分析2020年1月20日—2020年2月29日广州市唯一一家儿童2019-nCoV感染隔离定点医疗单位隔离病房收治住院的符合儿童2019-nCoV感染筛查/疑似病例129例,对其流行病学、发病特点、临床特征、实验室检查及转归、随访等进行总结分析。 结果 男 79例,女 50例,最小1个月,最大13岁,中位数2岁,51例(39.5%)有武汉疫区旅游或居住史,20例(15.5%)有与来自疫区有呼吸道症状人员接触史,17例(13.1%)周边或社区有确诊病例,3例(2.3%)有确诊病人接触史(其中2例为家庭确诊病例密切接触史),38例(29.5%)为临床符合或聚集性发病;临床症状:发热121例(93.8%),咳嗽92例(71.3%),流涕50例(38.8%),32例伴有腹泻、呕吐/腹痛(24.8%),102例(79.0%)白细胞降低或正常,C反应蛋白(C-reactive protein,CRP)＜20 mg/L有103例(79.8%),57例(44.2%)胸片或CT示肺部斑片状影或实变;病原学检查:2019-nCoV实时荧光定量反转录PCR检测结果:所有患儿及陪同家属都有行咽拭子检查,只有21例患儿(16.3%)有行肛拭子检查,仅有1例(0.78%)家庭确诊病例密切接触者肛拭子阳性,但连续多次咽拭子结果阴性,余患者肛拭子和咽拭子及陪同家属咽拭子结果均阴性。其他病原学检查结果61例(47.3%),包括14例RSV阳性,9例流感病毒A,8例人偏肺病毒,6例肠道病毒,6例流感病毒B,6例肺炎支原体,4例副流感病毒1型,1例副流感病毒3型,2例人博卡病毒,3例腺病毒,1例肺炎克雷伯菌,1例人型葡萄球菌,其中1例合并副流感病毒1型及人博卡病毒。跟踪唯一1例确诊患者咽拭子多次检查均阴性,肛拭子持续19天后才转阴,一直无任何症状。其余患者好转出院后第3天、7天及14天进行随访,无异常发现。结论 儿童2019-nCoV感染筛查/疑似病例临床多表现为呼吸道或消化道症状,确诊主要依靠核酸检测,新冠病毒感染确诊率极低,而其将近50%病例能找到除新冠病毒外的其它相关病原体;高危患者为密切接触者,但存在漏诊的可能,肛拭子阳性率或高于咽拭子。
Objective To explore the epidemiological characteristics, onset characteristics, pathogenic mechanism of 2019-nCoV infection in children, and its control and prevention in Guangzhou. Methods From January 20, 2020 to February 29, 2020, a retrospective analysis was carried out on 129 suspected cases of 2019-nCoV infection admitted to the isolation ward of the only medical unit designated for children in Guangzhou. The epidemiology, disease characteristics, clinical characteristics, laboratory examination, outcome and follow-up were summarized and analyzed. Results There were 79 males and 50 females, with a minimum age of 1 month and a maximum age of 13 years. Anong them, 51 cases (39.5%) had a history of tourism or residence in the epidemic area of Wuhan, 20 cases (15.5%) had a history of contact with people with respiratory symptoms from the epidemic area, 17 cases (13.1%) with a confirmed case in the surrounding area or community, 3 cases (2.3%) had a history of contact with a confirmed patient (2 of them were family clustering cases), 38 cases (29.5%) were clinically suspected cases. Clinical symptoms: 121 cases with fever (93.8%), 92 cases with coughing (71.3%), 50 cases with runny nose (38.8%), 32 cases with diarrhea, vomiting or abdominal pain (24.8%). In 102 cases (79.0%), white blood cells were decreased or normal, 103 cases (79.8%) with CRP＜20 mg/L, and 57 cases (44.2%) showed focal infection on chest X-ray or CT scan. Etiological examination: only one case (0.78%) of the family confirmed cases had positive anal swab result, but the throat swab results were negative all the time. The anal swab and throat swab results of other patients and the throat swab results of their accompanying family members were negative. Other pathogens were detected in 61 cases (47.3%), including 14 RSV positive cases, 9 influenza A positive cases, 8 human metapneumovirus positive cases, 6 enterovirus positive cases, 6 influenza B positive cases, 6 Mycoplasma pneumoniae positive cases, 4 parainfluenza virus type 1 positive cases, 1 parainfluenza virus type 3 positive cases, 2 human bocavirus positive cases, 3 adenovirus positive cases, 1 Klebsiella pneumoniae positive cases, 1 Human Staphylococcus positive case, and 1 case with parainfluenza virus type 1 and human bocavirus. The only confirmed patient was followed up while multiple pharyngeal swab results were negative, and the positive anal swab results lasted for 19 days before turning negative and remained asymptomatic. Other patients were followed up on the 3rd, 7th and 14th day after discharge, and no abnormal findings were found. Conclusion Screening/suspected cases of 2019-nCoV infection in children were mostly clinically manifested as respiratory or gastrointestinal symptoms. The diagnosis rate of nucleic acids was extremely low, and there was a possibility of missed diagnosis. Nearly 50% of cases could find other relevant pathogens excluding the 2019-nCoV. The positive rate of anal swab results was higher than that of pharyngeal swab.
目的 通过对不同受孕能力精子外显子的分析,寻找并验证特异性外显子作为精子受孕能力的生物标记物。 方法 基于二代测序数据进行生物信息学分析,寻找特异性外显子并设计引物。各取8份高、低受孕能力精液标本,提取精子RNA反转录后进行real time q-PCR验证外显子的表达效率,筛选表达差异恒定的精子外显子作为生物标记物。各取10份高、低受孕能力精子标本,用筛选后的外显子引物进行real time q-PCR验证。 结果 生物信息学分析得到31个候选精子外显子,从31个候选外显子中筛选出9个表达差异恒定的精子外显子GAPDHS、HSF2BP、HSPA1L、ADAM21、SPEM1、WBP2NL、DDX20、TSGA10、PGK2;real time q-PCR验证结果显示,在高、低受孕能力精液标本中这9种精子外显子表达差异明显。 结论 初步确定,差异表达恒定的九种外显子可作为评估精子质量的生物标记物。
Objective To find and verify specific exons as biomarkers of sperm fertility by analyzing sperm exons with different fertility ability.Methods Based on the second generation sequencing data, bioinformatics analysis was conducted to find specific exons and design primers. We obtained 16 semen samples, 8 of high and the other 8 of low fertilizing ability, after the sperm RNAs were extracted and reverse-transcribed, real time q-PCR was performed to verify the expression efficiency of exons, and the sperm exons with constant expression difference were selected as biomarkers. 10 high and 10 lowfertility ability sperm samples were taken for real time q-PCR verification with screened exon primers. Results Thirty-one sperm exons were obtained by bioinformatics analysis, and 9 sperm exons with constant expression differences were selected from the 31 candidate exons, including GAPDHS, HSF2BP, HSPA1L, ADAM21, SPEM1, WBP2NL, DDX20, TSGA10 and PGK2. The results of real time q-PCR verification showed that the exons of these 9 sperm were significantly different in the semen samples with high and low fertility ability. Conclusion Nine exons with constant differential expression can be used as biomarkers to evaluate sperm quality.
