نتایج جستجو برای: myoepithelial cells

تعداد نتایج: 1384039  

Journal: :Saudi medical journal 2006
Zuhal Gucin Bilgin Aksoy Feray Gunver Esra Pasaoglu Fadime Bahadir

OBJECTIVE The purpose of this study is to examine the relationship between hormone-receptor status and histological parameters, considering that some estrogen receptor (ER)-negative breast carcinoma are suggested to be of myoepithelial origin or differentiation; and to examine the presence of significant difference by myoepithelial markers and define their morphologies. METHODS For this resea...

Journal: :Histology and histopathology 1991
E del Cacho M Gallego C Felices J A Bascuas

An electron microscopic study of the myoepithelial cells in the chicken Harderian gland provides evidence that these cells can be transformed into myofibroblasts. After the application of a Brucella ovis suspension in sterile saline onto the eyeball, every 5 minutes for half an hour, myoepithelial cells gradually develop over a 90-minute period the characteristic features of myofibroblasts: bun...

Journal: :Journal of the College of Physicians and Surgeons--Pakistan : JCPSP 2013
Azizun-Nisa Javed Iqbal Kazi Saba Jamal

Myoepithelial carcinoma, the malignant counterpart of benign myoepithelioma, is one of the rarest salivary gland neoplasms. It is composed almost exclusively of tumour cells with myoepithelial differentiation, characterized by infiltrative growth and potential for metastasis. We herein, report a case of myoepithelial carcinoma in a 50 years old male with reticular morphology. Reticular variant ...

Journal: :The Journal of pathology 2017
Hendrika M Duivenvoorden Jai Rautela Laura E Edgington-Mitchell Alex Spurling David W Greening Cameron J Nowell Timothy J Molloy Elizabeth Robbins Natasha K Brockwell Cheok Soon Lee Maoshan Chen Anne Holliday Cristina I Selinger Min Hu Kara L Britt David A Stroud Matthew Bogyo Andreas Möller Kornelia Polyak Bonnie F Sloane Sandra A O'Toole Belinda S Parker

Mammography screening has increased the detection of early pre-invasive breast cancers, termed ductal carcinoma in situ (DCIS), increasing the urgency of identifying molecular regulators of invasion as prognostic markers to predict local relapse. Using the MMTV-PyMT breast cancer model and pharmacological protease inhibitors, we reveal that cysteine cathepsins have important roles in early-stag...

Journal: :Environmental Health Perspectives 1989
R Barraclough P S Rudland

The fully differentiated cells of the rat mammary parenchyma, the ductal epithelial, alveolar, and myoepithelial cells, are distinguished by their ultrastructure and by their accumulation of immunocytochemically detectable marker proteins. The different cell types probably develop from primative ductal structures called terminal end buds, which are present in the developing rat mammary glands, ...

Journal: :Cancer research 1992
A Sapino M Papotti B Sanfilippo P Gugliotta G Bussolati

Epithelial and myoepithelial cells coexist in the rat R3230AC mammary tumor. To test the hypothesis that these two cell types constitute interactive but independent neoplastic populations, we obtained in vitro cell lines with epithelial or myoepithelial patterns and transplanted them in syngeneic animals. One stabilized line (EPI) and four cloned lines (A, C, D, E) with epithelial characteristi...

2014
Jazib Nazeer Vijay Prakash Soumen Mandal Abhishek Prakash

Myoepithelial cells are smooth muscle like cells having epithelial origin. They are present in salivary glands, mammary gland, sweat gland and lacrimal gland. Myoepithelial cells are stellate or spindle shaped with 4 to 8 cytoplasmic processes. They play vital role during expulsion of saliva and regulates the electrolytic exchange. They also act as tumor suppressor and are considered very impor...

Journal: :Archivum histologicum Japonicum = Nihon soshikigaku kiroku 1979
R Taga A Sesso

An electron microscopic study of the exocrine and myoepithelial cells of the parotid gland of the rat between days 2 and 40 of the postpartum was undertaken. Besides confirming morphological data of the literature on the evolution of the acinar cells, the following observations are reported. 1. At early postnatal development in some acini "mucous-like" cells containing secretory granules with l...

Journal: :Frontiers in bioscience 2010
Puspa Raj Pandey Jamila Saidou Kounosuke Watabe

Myoepithelial cells form a semi-continuous protective sheet separating the human breast epithelium and the surrounding stroma. They suppress stromal invasion of tumor cells by the secretion of various anti-angiogenic and anti-invasive factors. The disruption of this cell layer results in the release of the growth factors, angiogenic factors, and reactive oxygen species causing an alteration in ...

2014
Chang Hwan Choi Young Chae Chu Lucia Kim Suk Jin Choi In Suh Park Jee Young Han Joon Mee Kim

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Myoepithelial carcinoma of soft tissue is extremely rare although its counterpart of the sa...

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