hemangioma/protease

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Inhibition of matrix metalloproteinases by over-expression of tissue inhibitor of metalloproteinase-2 inhibits the growth of experimental hemangiomas.

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Inhibitors of proteases prevent tumor-associated matrix degradation, affecting tumor growth, angiogenesis and metastasis. Our study was designed to investigate the effect of inhibition of matrix metalloproteinases (MMPs) on the growth of experimental hemangiomas, using the model of murine

Thrombomodulin as a marker for vascular tumors. Comparative study with factor VIII and Ulex europaeus I lectin.

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Thrombomodulin (TM) is a newly described endothelial cell-associated protein that functions as a potent natural anticoagulant by converting thrombin from a procoagulant protease to an anticoagulant. Various vascular tumors were characterized with immunoperoxidase staining with the use of a

Protease-activated receptor 2 signaling upregulates angiogenic growth factors in renal cell carcinoma.

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Renal cell carcinoma (RCC) is a highly vascular tumor associated with expression of various angiogenic growth factors. The precise process of how these growth factors are regulated in RCC is not fully understood. Recent evidence suggests that protease activated receptors (PARs), a new family of

Effects of antiretroviral therapy on tube-like network formation of human endothelial cells.

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New guidelines suggest that HIV-infected pregnant women should be offered combination antiretroviral therapy (zidovudine and protease inhibitors) to prevent fetal HIV infection but concerns remain about potential adverse effects for the infant. Prior small case series have suggested an increased

The nucleotide analog cidofovir suppresses basic fibroblast growth factor (FGF2) expression and signaling and induces apoptosis in FGF2-overexpressing endothelial cells.

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Cidofovir [(S)-1-(3-hydroxy-2-phosphonylmethoxypropyl)cytosine; (S)-HPMPC] is an antiviral drug that has been approved for the treatment of cytomegalovirus retinitis in patients with AIDS. Cidofovir also possesses potent activity against human papillomavirus-induced tumors in animal models and

Posttranscriptional stimulation of endothelial cell matrix metalloproteinases 2 and 1 by endothelioma cells.

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Matrix metalloproteinases (MMPs) play a critical role in the development of hemangioma-like vascular tumors in mice injected with murine eEnd.1 endothelioma cells. The current study was designed to (a) characterize the presence of MMPs in the vascular tumor, (b) define whether these MMPs originate

Increased proteolytic activity is responsible for the aberrant morphogenetic behavior of endothelial cells expressing the middle T oncogene.

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Expression of the polyoma virus middle T (mT) oncogene in vivo is associated with a profound subversion of normal vascular development, which results in the formation of endothelial tumors (hemangiomas). In an attempt to understand the molecular mechanisms responsible for this phenomenon, we have

von Hippel-Lindau tumor suppressor protein stimulation by thrombin involves RhoA activation.

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Inactivation of the von Hippel-Lindau (VHL) tumor suppressor gene is associated with the development of vascular tumors including renal cell carcinoma. Aside from the role played by the VHL protein (pVHL) in negative regulation of hypoxia-inducible factor, 41F-1alpha, pVHL also takes part in

Anthrax lethal toxin inhibits growth of and vascular endothelial growth factor release from endothelial cells expressing the human herpes virus 8 viral G protein coupled receptor.

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OBJECTIVE In this study, we tested the hypothesis that inhibition of mitogen-activated protein kinase kinases (MKK) inhibits tumor growth by acting on angiogenic signaling and by extension may form the basis of an effective strategy for treatment of Kaposi's sarcoma. METHODS Murine endothelial cells

Antiretroviral therapies in pregnancy: maternal, fetal and neonatal effects. Swiss HIV Cohort Study, the Swiss Collaborative HIV and Pregnancy Study, and the Swiss Neonatal HIV Study.

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BACKGROUND Therapies containing two reverse transcriptase inhibitors (RTI) with or without protease inhibitors are used with increasing frequency in pregnant HIV-infected women. OBJECTIVE To assess the safety of antiretroviral therapy in pregnant women and their newborns. METHODS All clinical events

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