检索结果-南通市图书馆

Behavior of CD44 Receptors in mammary tumors of Dogs

Open Journal of Veterinary Medicine 2012年第2期2卷 48-51页

作者： Georgia MMagalhaes Ana Carolina TSilveira Danisio PMunari Antonio CAlessi Department of Veterinary Pathology Sao Paulo State UniversitySao PauloBrazil Department of Animal Science Sergipe Federal UniversitySergipeBrazil

CD44 is a cell adhesion molecule closely related to tumor progression in humans. In canine mammary tumors, little information is available about this molecule. The aim of this study was to analyze, by immunohistochemistry, the behavior of this molecule in canine mammary tumors with or without the presence of metastasis. The dogs were divided in groups without metastasis (G1) and with metastasis (G2, with subsets A—original neoplasia and B—metastatic neoplasia). tumors were classified according to the World Health Organization (WHO) criteria. The cells were counted whereby the plasma membrane and/or cytoplasm are stained. There was a significant increase in the number of cells immunostained for CD44 in the metastastic masses (G2B) as compared to groups G1 and G2A. It is concluded that in metastatic mass there was a significant increase in CD44 receptors, probably important for biology of the mammary tumor of dogs.

关键词： Dogs Oncology mammary tumors

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

Immunoexpression of Cathepsin D and S100A4 Protein and Their Molecular Subtyptes in Canine mammary Carcinomas

引用

Open Journal of Veterinary Medicine 2012年第4期2卷 163-169页

作者： Fernanda C.Figueiroa Breno S.Salgado Lidianne N.Monteiro Rafael Malagoli Rocha Maria Aparecida C.Domingues Diana Martins Fernando Schmitt Noeme S.Rocha Departamento de Patologia Faculdade de Medicina de BotucatuUniversidade Estadual Paulista“Julio de Mesquita Filho”BotucatuBrazil Departamento de Anatomia Patologica Hospital A.C.CamargoFundacao Antonio PrudenteSao PauloBrazil Instituto de Patologia e Imunologia Molecular da Universidade do Porto OportoPortugal Faculdade de Medicina Universidade do PortoOportoPortugal Departamento de Clínica Veterinaria Servico de Patologia VeterinariaFaculdade de Medicina Veterinaria e ZootecniaUniversidade Estadual Paulista“Julio de Mesquita Filho”BotucatuBrazil

Cathepsin D (CD), a lysosomal protease, and S100A4 protein, a calcium binding motif, are considered to be involved in metastasis in various human cancers. No data regarding such proteins are available for canine mammary carcinomas (CMCs). Accordingly, their expression in association with known factors of prognosis was investigated in this study. For that, 66 surgically resected CMCs were submitted to an immunohistochemical evaluation using anti CD, S100A4 protein, HER2, estrogen receptor α, cytokeratin 5, and p63 antibodies, further characterizing the tumors' molecular subtype. An increase in S100A4 immunoexpression by neoplastic luminal mammary cells was associated with an infiltrative tumor mode of growth, consequently leading us to conclude that S100A4 protein could be related to progression in CMCs. Additionally, the occurrence of the luminal A molecular subtype was associated with the complex histotype in CMCs. Although we have demonstrated that changes in S100A4 protein immunoexpression occurs in CMCs, further studies are needed to determine whether this represents important independent biomarkers for CMCs.

关键词： Cathepsin mammary tumors Metastasis-Associated Proteins Molecular Subtypes S100 Protein

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

Snai-1 and Epithelial-Mesenchymal Transition-Related Protein Immunoexpression in Canine mammary Carcinomas

引用

Advances in Breast Cancer Research 2014年第4期3卷 111-117页

作者： Breno S.Salgado Rafael M.Rocha Fernando A.Soares Fátima Gartner Noeme S.Rocha Departamento de Patologia Faculdade de Medicina de BotucatuUniversidade Estadual Paulista(UNESP)BotucatuBrazil Laboratório de Patologia Investigativa e Comparada Departamento de Clínica VeterináriaFaculdade de Medicina Veterinária e ZootecniaUniversidade Estadual Paulista(UNESP)BotucatuBrazil Departamento de Anatomia Patológica Hospital A.C.CamargoFundacao Antonio PrudenteSao PauloBrazil Institute of Pathology and Molecular Immunology(IPATIMUP) OportoPortugal

Epithelial-mesenchymal transition (EMT) is defined as switching of polarized epithelial cells to a migratory fibroblastoid phenotype. EMT is known to be involved in the progression and metastasis of various cancers in humans, but this specific process is still little explored in the veterinary literature. The aim of this research was to evaluate the expression of EMT-related proteins in canine mammary carcinomas (CMCs). The expression of six EMT-related proteins in 94 CMCs of female dogs was evaluated by immunohistochemistry using a tissue array method. Additionally, clinicopathological characteristics were compared with the expression of EMT-related proteins. Loss of epithelial protein and/or acquisition of the expression of mesenchymal proteins were observed in CMCs. Loss of epithelial protein and/or acquisition of the expression of mesenchymal proteins were observed, particularly in tumors with evidence of stromal invasion;however, significance was only observed between the S100A4 and vascular invasion. In addition, Snai-1 nuclear immunoexpression was significantly related to E-cadherin loss. In conclusion, loss of epithelial proteins and/or the acquisition of mesenchymal proteins are associated with EMT and may have an important role in the evaluation of CMC patients. The unique immunoexpression pattern of Snai-1 could help to distinguish between an adenoma and a non-metastatic carcinoma and seems to be related to conversion of myoepithelial cells to a complete mesenchymal-like phenotype. Loss of E-cadherin and cytokeratin and change of immunoexpression pattern of Snai-1, N-cadherin, S100A4 and MMP-2 indicate the occurrence of EMT in canine mammary carcinomas and should result in an en bloc resection or a close follow-up.

关键词： EMT S100A4 Keratin mammary tumors Dog

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

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

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：