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运用PCR对小鼠植入前胚胎进行性别诊断 被引量:5
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作者 李汶 陆长富 卢光琇 《生命科学研究》 CAS CSCD 2001年第1期48-51,共4页
根据 C57BL6小鼠 Y染色体重复序列 1 4 5C5的碱基顺序 ,设计并合成一对引物 ,运用 PCR扩增昆明白小鼠植入前胚胎卵裂球 DNA,以确定其性别 .共对 1 0 8枚活检胚胎的相应卵裂球进行了性别诊断 ,获雄性胚 4 6枚 ,雌性胚 62枚 ,移植后分别... 根据 C57BL6小鼠 Y染色体重复序列 1 4 5C5的碱基顺序 ,设计并合成一对引物 ,运用 PCR扩增昆明白小鼠植入前胚胎卵裂球 DNA,以确定其性别 .共对 1 0 8枚活检胚胎的相应卵裂球进行了性别诊断 ,获雄性胚 4 6枚 ,雌性胚 62枚 ,移植后分别获雄性仔鼠 4只 ,准确率 1 0 0 % ( 4/4 ) ,雌性仔鼠 9只 ,准确率 70 %( 9/1 3) .本研究结果表明小鼠 Y染色体重复序列 1 4 5C5的碱基顺序在 C57BL6小鼠和昆明白小鼠中基本一致 ;为农牧业动物进行性别选择和运用 展开更多
关键词 植入前遗传学诊断 胚胎 聚合酶链反应 性别鉴定 小鼠
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Diagnosis of intraductal papillary mucinous neoplasm using endoscopic ultrasound guided microbiopsies:A case report
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作者 Charlotte Vestrup Rift Bojan Kovacevic +7 位作者 John Gásdal Karstensen Julie Plougmann Pia Klausen Anders Toxvaerd Evangelos Kalaitzakis Carsten Palnaes Hansen Jane Preuss Hasselby Peter Vilmann 《World Journal of Gastrointestinal Endoscopy》 CAS 2018年第7期125-129,共5页
Pancreatic cysts are increasingly diagnosed due to expanding use of cross-sectional imaging,but current diagnostic modalities have limited diagnostic accuracy.Recently,a novel through-the-needle microbiopsy forceps ha... Pancreatic cysts are increasingly diagnosed due to expanding use of cross-sectional imaging,but current diagnostic modalities have limited diagnostic accuracy.Recently,a novel through-the-needle microbiopsy forceps has become available,offering the possibility of obtaining cyst-wall biopsies.We present a case of 41-year-old male with chronic pancreatitis and a 2-cm pancreatic cyst,initially considered a pseudocyst.Subsequently,endoscopic ultrasou-nd guided microbiopsies were successfully obtained,which surprisingly revealed an intraductal papillary mucinous neoplasm of mixed subtype with low grade dysplasia.In conclusion,obtaining biopsies from the wall of the pancreatic cystic lesions with this novel instrument is feasible and,as demonstrated in this case,can possibly alter the clinical outcome.Microbiopsies offered enough cellular material,allowing supplemental gene mutation analysis,which combined with other modalities could lead to a more individual approach when treating pancreatic cysts.However,prospective studies are warranted before routine clinical implementation. 展开更多
关键词 microbiopsy Pancreatic CYST ENDOSCOPIC ultrasound-fine needle ASPIRATION INTRADUCTAL PAPILLARY MUCINOUS neoplasm Chronic pancreatitis
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Radio-Histopathological Aspects of Breast Nodules in a Sub-Saharan African City (Ouagadougou, Burkina Faso)
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作者 Nina-Astrid Nde Ouedraogo Bénilde Ma Kambou Tiemtore +7 位作者 Yobi Alexis Sawadogo Boubakar Ouattara Prosper David Lamien Madina Napon Ousséini Diallo Abel Bamouni Claudine Lougue Sorgho Rabiou Cisse 《Open Journal of Medical Imaging》 2018年第3期89-96,共8页
Objective: To determine the diagnostic contribution of breast microbiopsy percutaneously under ultrasound guidance. Methodology: Retrospective descriptive study conducted from January 2014 to October 2017. The include... Objective: To determine the diagnostic contribution of breast microbiopsy percutaneously under ultrasound guidance. Methodology: Retrospective descriptive study conducted from January 2014 to October 2017. The included patients had an ultrasound-guided breast microbiopsy after a mammographic and ultrasound scan. The variables collected were gender, age, nodule size, ACR classification and anatomopathologic diagnosis. Results: 347 nodules were explored in 313 patients. There were 300 women (95.85%) and 13 men (4.15%), a gender ratio of 23.07. The average age was 44.64 ± 14.18 years. The average size of the nodules was 30.33 ± 19.58 mm. There were 53.89% ACR4 grade nodules, 48% ACR5 nodules and 32.28% ACR3 nodules. 86.49% of ACR3 nodules were benign and 97.92% of ACR5 nodules were actually malignant. Malignant tumors accounted for 50.29% of the nodules and were dominated by invasive breast carcinomas in 98.26%. The average age of patients with malignant tumors was 49.15 ± 11.55 years. 16% of patients with malignancy were aged under 40 years old. Conclusion: The diagnostic yield was satisfactory and there was a good correlation between the rate of malignant and benign lesions and the positive predictive values of malignancy in the literature. 展开更多
关键词 BREAST microbiopsy Ultrasound Guidance MAMMARY NODULE BREAST Cancer
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Male Breast Nodules in Ouagadougou (Burkina Faso): Radiological and Histopathological Aspects
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作者 Nina-Astrid Nde Ouedraogo Madina Napon +5 位作者 Bénilde Ma Kambou Tiemtore Boubakar Ouattara Abel Bamouni Ousséini Diallo Claudine Lougue Sorgho Rabiou Cisse 《Open Journal of Radiology》 2018年第4期274-280,共7页
Objective: To describe the radiological and histological aspects of breast nodules among men in our practice setting. Methodology: This is a descriptive and retrospective study conducted from January 2014 to October 2... Objective: To describe the radiological and histological aspects of breast nodules among men in our practice setting. Methodology: This is a descriptive and retrospective study conducted from January 2014 to October 2017. The study included male patients with breast nodules classified ACR3, 4 or 5 after a mammographic and ultrasound scan. These lesions were explored through an ultrasound-guided breast microbiopsy. The following are the variables collected: age, family history of breast cancer, medical history, ACR classification, nodule size, and anatomopathologic diagnosis. Results: 13 breast nodules were explored among 13 male subjects. Mammography and breast ultrasound enabled to identify one ACR3 lesion, 10 ACR4 lesions and 2 ACR5 lesions. The average age was 56.53 ± 14.63 years and the average size of the nodules 28.91 ± 13.62 mm. As for histology, there were seven malignant tumors and six benign tumors. The average age of patients with malignancy was 61.45 ± 13.62 years. The malignant nodules average size was 29.45 ± 12.54 mm. Malignant tumors exclusively consisted of invasive breast carcinomas while Benign ones consisted of dystrophic and inflammatory lesions. Conclusion: Most often Breast lesions among men had an indeterminate appearance on imaging and were predominantly malignant in histopathology. 展开更多
关键词 BREAST microbiopsy Cancer BREAST Male BENIGN NODULE
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