Transforming growth factor-β1 and insulin-like growth factor-1 expression in ovarian endometriotic cysts: a preliminary study

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This study found increased TGF-beta 1 mRNA and stromal expression, along with disregulated IGF-1 and its receptor, in ovarian endometriotic tissues, suggesting their involvement in endometriosis pathogenesis.

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This preliminary study examined TGF-β1 and IGF-1 expression and localization, including IGF-1 receptor, in ovarian endometriotic tissues obtained during surgery, using Northern hybridization for steady-state mRNA levels and immunohistochemistry for protein localization. The authors found comparable IGF-1 and IGF-1 receptor expression in the stromal and epithelial compartments, supporting disregulated expression of the IGF system in ovarian endometriosis, while TGF-β1 mRNA was strongly increased in all endometriotic samples. Immunohistochemistry showed weak TGF-β1 staining in the epithelial lining and intense expression in the cellular stroma of ovarian endometriomas, suggesting a role in disease maintenance and propagation. This paper is centrally about endometriosis — it focuses on TGF-β1 and IGF-1 expression in ovarian endometriotic cysts.

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Abstract

Increased concentrations of TGF-beta 1 in endometriotic tissue are considered important in the pathophysiology of endometrial diseases since TGF-beta 1 may inhibit natural killer activity and induce angiogenesis and proliferation of endometrial stromal cells. In the present study we report on TGF-beta 1, IGF-1 and their receptor localization, as detected by Northern hybridization and immunohistochemistry, in ovarian endometriotic tissues removed during surgical procedures. We detected comparable expression of IGF-1 and IGF-1 receptor in the stromal and epithelial compartments, thus confirming disregulated expression of the IGF system in ovarian endometriosis. On the contrary, strongly increased TGF-beta 1 steady state level mRNA expression was detected in all endometriotic samples. In addition, we demonstrated weak TGF-beta 1 immunohistochemical expression in the epithelial lining and intense expression in the cellular stroma of ovarian endometriomas, thus suggesting that TGF-beta 1 could have an important role in the maintenance and propagation of the disease. On the basis of these preliminary results we can assume that TGF-beta 1, IGF-1 and their receptors may play an important role in the pathogenesis of endometriosis.
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Print ISSN: 1107-3756 Online ISSN: 1791-244X International Journal of Molecular Medicine is an international journal devoted to molecular mechanisms of human disease. International Journal of Oncology is an international journal devoted to oncology research and cancer treatment. Covers molecular medicine topics such as pharmacology, pathology, genetics, neuroscience, infectious diseases, molecular cardiology, and molecular surgery. Oncology Reports is an international journal devoted to fundamental and applied research in Oncology. Experimental and Therapeutic Medicine is an international journal devoted to laboratory and clinical medicine. Oncology Letters is an international journal devoted to Experimental and Clinical Oncology. Explores a wide range of biological and medical fields, including pharmacology, genetics, microbiology, neuroscience, and molecular cardiology. International journal addressing all aspects of oncology research, from tumorigenesis and oncogenes to chemotherapy and metastasis. Multidisciplinary open-access journal spanning biochemistry, genetics, neuroscience, environmental health, and synthetic biology. Open-access journal combining biochemistry, pharmacology, immunology, and genetics to advance health through functional nutrition. Publishes open-access research on using epigenetics to advance understanding and treatment of human disease. An International Open Access Journal Devoted to General Medicine. Article - Authors: - Pages: 423-429|Published online on: April 1, 2001https://doi.org/10.3892/ijmm.7.4.423 - Expand metrics + Increased concentrations of TGF-β1 in endometriotic tissue are considered important in the pathophysiology of endometrial diseases since TGF-β1 may inhibit natural killer activity and induce angiogenesis and proliferation of endometrial stromal cells. In the present study we report on TGF-β1, IGF-1 and their receptor localization, as detected by Northern hybridization and immunohistochemistry, in ovarian endometriotic tissues removed during surgical procedures. We detected comparable expression of IGF-1 and IGF-1 receptor in the stromal and epithelial compartments, thus confirming disregulated expression of the IGF system in ovarian endometriosis. On the contrary, strongly increased TGF-β1 steady state level mRNA expression was detected in all endometriotic samples. In addition, we demonstrated weak TGF-β1 immunohistochemical expression in the epithelial lining and intense expression in the cellular stroma of ovarian endometriomas, thus suggesting that TGF-β1 could have an important role in the maintenance and propagation of the disease. On the basis of these preliminary results we can assume that TGF-β1, IGF-1 and their receptors may play an important role in the pathogenesis of endometriosis. Copy and paste a formatted citation Spandidos Publications style Loverro G, Maiorano E, Napoli A, Selvaggi L, Marra E and Perlino E: Transforming growth factor-β1 and insulin-like growth factor-1 expression in ovarian endometriotic cysts: a preliminary study. Int J Mol Med 7: 423-429, 2001. APA Loverro, G., Maiorano, E., Napoli, A., Selvaggi, L., Marra, E., & Perlino, E. (2001). Transforming growth factor-β1 and insulin-like growth factor-1 expression in ovarian endometriotic cysts: a preliminary study. International Journal of Molecular Medicine, 7, 423-429. https://doi.org/10.3892/ijmm.7.4.423 MLA Loverro, G., Maiorano, E., Napoli, A., Selvaggi, L., Marra, E., Perlino, E."Transforming growth factor-β1 and insulin-like growth factor-1 expression in ovarian endometriotic cysts: a preliminary study". International Journal of Molecular Medicine 7.4 (2001): 423-429. Chicago Loverro, G., Maiorano, E., Napoli, A., Selvaggi, L., Marra, E., Perlino, E."Transforming growth factor-β1 and insulin-like growth factor-1 expression in ovarian endometriotic cysts: a preliminary study". International Journal of Molecular Medicine 7, no. 4 (2001): 423-429. https://doi.org/10.3892/ijmm.7.4.423

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Condition tags

mesh:D004715endometriosis

MeSH descriptors

Endometriosis Insulin-Like Growth Factor I Ovarian Cysts Transforming Growth Factor beta Adult Blotting, Northern Endometriosis Endometriosis Endometrium Endometrium Endometrium Endometrium Female Humans Immunohistochemistry Insulin-Like Growth Factor I Macrophages Macrophages Macrophages Ovarian Cysts

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