检索结果-南通市图书馆

p21 and p27 immunoexpression in gastric well differentiated endocrine tumors(ECL-cell carcinoids)

World Journal of Gastroenterology 2006年第39期12卷 6280-6284页

作者： basak doganavsargil Banu Sarsik Fatma Secil Kirdok Ahmet Musoglu Muge Tuncyurek Department of Pathology Ege University Faculty of Medicine Izmir Turkey Department of Gastroenterology Ege University Faculty of Medicine Izmir Turkey

AIM： To investigate the expression of cyclin-dependent kinase inhibitors p21 and p27 in gastric well differentiated endocrine tumors （GWDET）（ECLocell carcinoids）.METHODS： The expressions of p21 and p27 were examined immunhistochemically in endoscopic biopsy specimens from 16 patients matching the diagnostic criteria of GWDET. Percentage of positive nuclear staining either weak or strong was noted. The association of immunoexpressions with age, gender, tumor localization, multifocality and accompanying chronic atrophic gastritis, neuroendocrine cell hyperplasia （NEH）, neuroendocrine dysplasia （NED）, intestinal metaplasia （IM）, Ki-67 proliferation index and clinical outcome were also ***： All cases expressed p27 with a mean expression score of 43.6%, while 31.3% of the cases showed any p21 expression, p21 and p27 immunoexpressions were significantly correlated with each other （P 〈 0.01）, and the p21-expressing group had higher p27 expression scores （68% vs 22%）. p21 and p27 expressions were lower in women, in non-atrophic mucosa and cases whose tumors were located somewhere other than fundus without submucosal extension. On contrary, p21 and p27 expressions were higher in males and the patients with submucosal extension and atrophic gastritis. Cases presenting lower p27 scores had solitary tumors showing neither NEH-NED nor IM. Despite, cases with lower p21 expression presented multifocal tumors accompanied by NEH-NED. However, no correlation of p21 and p27 expressions was found with age and Ki-67 ***： p27 is widely expressed in GWDETs, while p21 expression is sparse and observed in two thirds of the cases. Loss of p21 and p27 expressions may be correlated with different carcinoid tumor subtypes; however,more studies are needed to assess the role of these prospective markers in gastrointestinal endocrine tumors.

关键词： p21^waf1 p27^kip1 Cyclin-dependent kinase inhibitors Gastrointestinal carcinoids Well differentiated endocrine tumors Stomach

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Digitally reinforced hematoxylin-eosin polarization technique in diagnosis of rectal amyloidosis

引用

World Journal of Gastroenterology 2015年第6期21卷 1827-1837页

作者： basak doganavsargil Gulruh Emiroglu Buberal Huseyin Toz Banu Sarsik Burcin Pehlivanoglu Murat Sezak Sait Sen Depart-ment of Pathology Ege University Faculty of Medicine Department of Nephrology Ege University Faculty of Medicine

AIM:To investigate the efficacy of the digitally reinforced hematoxylin-eosin polarization(DRHEP)technique for detection of amyloidosis in rectal ***:One hundred hematoxylin-eosin(HE)stained rectal biopsies with Congo-red(CR)-positive amyloid depositions and 50 control cases with CRnegative amyloid-mimicking areas were scanned blinded to the CR results for amyloid depositions under both bright and polarized light,and digitally photographed using the DRHEP technique,to accentuate the faint birefringence observed in HE slides under *** results of DRHEP and HE evaluation were statistically correlated with CR polarization results with respect to presence and localization of amyloid deposits as well as amyloid ***:Amyloid deposits showed yellowish-green birefringence by DRHEP,which allowed identification of amyloidosis in 41 HE-unsuspected cases(P=0.016),31 of which only had vascular *** positivity was higher,and false negativity and positivity were lower by DRHEP,compared to evaluation by HE(69%,31%,and 0.8%vs 33%,67%,and 33%,respectively;P<0.0001).The sensitivity,specificity,accuracy,and positive and negative predictive values for DRHEP were69%,98%,78.6%,98.5%,and 61.25%,*** for DRHEP false negativity were presence of extensive background birefringence in 12 cases,absence of CR birefringent vessel in 3 cases,and missing of the tiny deposits in 9 cases,which could be improved by experience,especially in the latter *** correlation was found between age,gender,sites of deposits,or amyloid ***:The DRHEP technique improves diagnostic accuracy when used as an adjunct or a prior step to CR staining,especially for cases with limited tissues for further analysis.

关键词： Amyloidosis Congo red Hematoxylin-eosin Microscopy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：