RESUMO
OBJECTIVE@#To assess the value of chromosomal microarray analysis (CMA) and fluorescence in situ hybridization (FISH) for the prenatal diagnosis of chromosomal mosaicisms.@*METHODS@#A total of 775 pregnant women who had visited the Prenatal Diagnosis Center of Yancheng Maternal and Child Health Care Hospital from January 2018 to December 2020 were selected as study subjects. Chromosome karyotyping analysis and CMA were carried out for all women, and FISH was used to validate the suspected mosaicism cases.@*RESULTS@#Among the 775 amniotic fluid samples, karyotyping has identified 13 mosaicism cases, which yielded a detection rate of 1.55%. Respectively, there were 4, 3, 4 and 2 cases for sex chromosome number mosaicisms, abnormal sex chromosome structure mosaicisms, abnormal autosomal number mosaicisms and abnormal autosomal structure mosaicisms. CMA has only detected only 6 of the 13 cases. Among 3 cases verified by FISH, 2 cases were consistent with the karyotyping and CMA results, and clearly showed low proportion mosaicism, and 1 case was consistent with the result of karyotyping but with a normal result by CMA. Eight pregnant women had chosen to terminate the pregnancy (5 with sex chromosome mosaicisms and 3 with autosomal mosaicisms).@*CONCLUSION@#For fetuses suspected for chromosomal mosaicisms, CMA, FISH and G-banding karyotyping should be combined to determine the type and proportion of mosaicisms more precisely in order to provide more information for genetic counseling.
Assuntos
Feminino , Gravidez , Humanos , Mosaicismo , Hibridização in Situ Fluorescente , Transtornos Cromossômicos/genética , Diagnóstico Pré-Natal/métodos , Aberrações Cromossômicas , Aberrações dos Cromossomos Sexuais , Análise em Microsséries/métodos , CromossomosRESUMO
Objective To establish a monitoring database of historical Oncomelania hupensis environments at grass?root lev?el for schistosomiasis prevention based on Google Earth(GE),so as to improve the management efficiency of historical O. hu?pensis environments. Methods GE was labeled with the information about the historical O. hupensis environments through add?ing landmark,path and polygon. Meanwhile,POCO web album was used to storage the practice situation pictures of the environ?ments,which could be imported into GE so that the environments could be monitored dynamically. Results There were 553 historical O. hupensis snail environments in Yangjian Town,Xishan District,Wuxi City and the accumulative area was 506 000 m2. Among these environments,224(40.5%)were Class IV environments,accounting for 40.5%of accumulative area. Conclu?sions The monitoring database of historical O. hupensis environments based on GE at country level is established successfully and it can be used to manage the historical snail environments visually and monitor the changes dynamically.
RESUMO
Objective To investigate the tracing value of drug-loaded nano-active carbon for lymphatic visualization and its potential application in the lymphadenectomy of gastric cancer. Methods Sixty-three patients with advanced gastric carcinoma were randomized into 2 groups:control group and tracing group. For the tracing group, 5-Fu-loaded nano-active carbon (NP-5-FU) suspension was intratumorally administered by preoperative gastroscope-guided or intra-operative injection. No tracing reagents was given in the control group. The numbers of removed lymph nodes and metastasis-involved lymph nodes as well as the lymph node staining were recorded and compared between the two groups. The adverse effects was monitored. Results The resected lymph nodes in the tracing group were much more than that of control group (43.73 ± 9. 25 vs. 25. 36 ± 4. 73, t = 3.82,P ＜ 0. 05). For the N1, N2 and N3 lymph nodes, 27. 17 ± 5. 82,13.73 ± 4. 61 and 2. 83 ± 0. 15 per case of the tracing group were desected, while they were 14. 45 ± 2. 75,8. 27 ± 1.89, and 2. 64 ± 0. 11 per case in the control group,respectively (P ＜ 0. 05 ). 26. 2% (211/842) of the lymph nodes in the tracing group showed black intensity,higher than that of unstain lymph nodes (4. 5% ,21/470,χ2 =95. 108,P ＜0. 05) and that in control group (16.9%, 142/837)( χ2 =7.485 ,P ＜ 0.05, ). No local and systemic adverse reactions were observed for the local injection of nano-active carbon. No extension of operating time and increased complications occurred. Conclusion Local injection of nano-active carbon which was loaded with 5-FU around the tumor is a very useful measure to trace the lymph nodes and facilitate the lymphedetectomy and chemotherapy.
RESUMO
This paper introduces the setting and configuration of our hospital's fPACS workstation, which is developed by the First Military Medical University. The fPAX video workstations are used as the terminals, including fPAX sampling workstation for video, picture and number, fPAX diagnosis workstation, fPAX clinician workstation and fPAX consultation center workstation. The workstation is equipped with an IBM4 2G host computer, an 80G fixed disc, an EMS memory more than 512M and a SONY 21″ pure flat display. Our experience of building PACS workstation proves that the reasonable setting and configuration is helpful to save the money and increase the efficiency.