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Journal of Histochemistry and Cytochemistry, Vol. 49, 1061-1062, August 2001, Copyright © 2001, The Histochemical Society, Inc.

BRIEF REPORT

The Role of Mast Cell Tryptase in Neoangiogenesis of Premalignant and Malignant Lesions of the Uterine Cervix

L. Benítez–Bribiescaa, A. Wonga, D. Utreraa, and E. Castellanosa
a Oncological Research Unit, National Medical Center S-XXI, México DF, México

Correspondence to: L. Benítez–Bribiesca, Oncological Research Unit, National Medical Center S-XXI, Av. Cuauhtémoc 330, 06725 México DF, México. E-mail: luisbenbri@mexis.com

Recently, mast cell tryptase has been identified as another potent proangiogenic factor in tumors, along with fibroblast and vascular endothelial growth factors. Its role has been studied in a number of cancers, including carcinoma of the uterine cervix, with discordant results. Our aim was to study the expression of tryptase and bFGF in mast cells (MCs) during development of neoangiogenesis in premalignant and malignant lesions of the cervix. Biopsy specimens from 21 patients without cancer and from 63 patients with dysplasias and squamous cell carcinomas were used. They were stained with Alcian blue–safranin O (ABSO) and immunostained with specific antibodies against factor VIII, CD105, tryptase, and bFGF. Tryptase-positive mast cells increased with tumor progression and were close to newly formed blood vessels. Vascularization showed a linear increase from dysplasia to invasive cancer. We suggest that MC tryptase may upregulate neoangiogenesis in carcinogenesis of the uterine cervix. (J Histochem Cytochem 49:1061–1062, 2001)

Key Words: mast cell, tryptase, angiogenesis, cervical cancer


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