Document Detail


Association of interleukin 16 with the development of ovarian tumor and tumor-associated neoangiogenesis in laying hen model of spontaneous ovarian cancer.
MedLine Citation:
PMID:  22274315     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
OBJECTIVE: Tumor-associated neoangiogenesis (TAN) is an early event in ovarian tumor development. Interleukin 16 (IL-16) is a proangiogenic cytokine that stimulates production of neoangiogenic factors. The goal of this study was to determine the association of IL-16 with tumor development and ovarian TAN in laying hens, an animal model of spontaneous ovarian cancer (OVCA).
METHODS: Sera and ovarian tissues from 3-year-old laying hens were collected and processed for histopathologic, immunoassay, immunohistochemistry, immunoblotting, and molecular biological studies to determine the tissue expression and serum levels of IL-16. Samples were divided into 3 groups based on the diagnosis of the histopathologic ovarian tissue examination, namely, normal (healthy control, n = 81), early (n = 23 including 11 with microscopic OVCA), and late stages (n = 16) of OVCA.
RESULTS: Serum levels of IL-16 were significantly higher in hens with microscopic, early, and late stages of OVCA than normal hens (P < 0.0001). The frequencies of IL-16cells in tumor-bearing ovaries were significantly higher than normal hens (P < 0.05). The expression of IL-16 protein and mRNA were stronger in tumor-bearing ovaries than normal ovaries. In addition to ovarian stroma, IL-16 was also expressed by the epithelial cells of the tumor in OVCA hens. Differences in serum levels and ovarian IL-16 expression were not significant among different histological subtypes of OVCA including serous, endometrioid, and mucinous. Similar to the serum levels and ovarian expression of IL-16, the densities of neoangiogenic microvessels were significantly higher in hens with tumor-bearing ovaries than normal hens.
CONCLUSIONS: The results of the study suggest that changes in serum levels of IL-16 are associated with tumor development and TAN. Thus, serum IL-16 levels may be an indicator of ovarian TAN at the early stage of OVCA.
Authors:
Aparna Yellapa; Janice M Bahr; Pincas Bitterman; Jacques S Abramowicz; Seby L Edassery; Krishna Penumatsa; Sanjib Basu; Jacob Rotmensch; Animesh Barua
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of gynecological cancer : official journal of the International Gynecological Cancer Society     Volume:  22     ISSN:  1525-1438     ISO Abbreviation:  Int. J. Gynecol. Cancer     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-01-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9111626     Medline TA:  Int J Gynecol Cancer     Country:  United States    
Other Details:
Languages:  eng     Pagination:  199-207     Citation Subset:  IM    
Affiliation:
*Department of Pharmacology, Rush University Medical Center, Chicago; †Department of Animal Sciences, University of Illinois at Urbana-Champaign; and Departments of ‡Pathology, §Obstetrics and Gynecology, and ∥Preventive Medicine (Biostatistics), Rush University Medical Center, Chicago, IL.
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