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Differential expression of fatty acid‑binding proteins and pathological implications in the progression of tongue carcinoma

Differential expression of fatty acid‑binding proteins and pathological implications in the... Tongue carcinomas are common malignancies of the oral cavity. Understanding the molecular mechanisms behind the disease progression is a prerequisite for improving patient prognosis. Fatty acid‑binding proteins (FABPs) are cytoplasmic lipid chaperones that affect cellular organization and energy production. Although their aberrant expression is involved in carcinoma progression, its role in the pathology of tongue carcinomas remains unclear. In the present study, the immunohistochemical expression of FABP4 and FABP5 in tongue carcinomas (n=58) and its involvement in the clinicopathological parameters were examined. Normal tongue epithelial cells expressed FABP5, an epidermal‑type FABP, but not FABP4, an adipocyte‑type FABP. The cytoplasmic staining of FABP5 was increased in carcinomas with advanced T‑stage (P<0.05) and clinical stage (P<0.05). Ectopic expression of FABP4 was detected in almost all carcinomas, although its role in disease progression remains undetermined. Upregulation of FABP5 in the wounded skin of genetically normal mice indicated that microenvironmental tissue factors induce FABP5 expression. The results of the present study demonstrated the aberrant expression of FABP4 and FABP5 in tongue carcinomas and suggested the involvement of FABP5 in disease progression. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Molecular and Clinical Oncology Spandidos Publications

Differential expression of fatty acid‑binding proteins and pathological implications in the progression of tongue carcinoma

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Publisher
Spandidos Publications
Copyright
Copyright © Spandidos Publications
ISSN
2049-9450
eISSN
2049-9469
DOI
10.3892/mco.2013.198
Publisher site
See Article on Publisher Site

Abstract

Tongue carcinomas are common malignancies of the oral cavity. Understanding the molecular mechanisms behind the disease progression is a prerequisite for improving patient prognosis. Fatty acid‑binding proteins (FABPs) are cytoplasmic lipid chaperones that affect cellular organization and energy production. Although their aberrant expression is involved in carcinoma progression, its role in the pathology of tongue carcinomas remains unclear. In the present study, the immunohistochemical expression of FABP4 and FABP5 in tongue carcinomas (n=58) and its involvement in the clinicopathological parameters were examined. Normal tongue epithelial cells expressed FABP5, an epidermal‑type FABP, but not FABP4, an adipocyte‑type FABP. The cytoplasmic staining of FABP5 was increased in carcinomas with advanced T‑stage (P<0.05) and clinical stage (P<0.05). Ectopic expression of FABP4 was detected in almost all carcinomas, although its role in disease progression remains undetermined. Upregulation of FABP5 in the wounded skin of genetically normal mice indicated that microenvironmental tissue factors induce FABP5 expression. The results of the present study demonstrated the aberrant expression of FABP4 and FABP5 in tongue carcinomas and suggested the involvement of FABP5 in disease progression.

Journal

Molecular and Clinical Oncology – Spandidos Publications

Published: Jan 1, 2014

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