hemangioma/tyrosine

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Expression of the endothelial receptor tyrosine kinase Tie2 in lobular capillary hemangioma of the oral mucosa: an immunohistochemical study.

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BACKGROUND Lobular capillary hemangioma (LCH) usually occurs in the skin or mucous membranes as a rapidly growing red nodule. LCH is one of the most common vascular lesions in the oral mucosa. Tie2 is a novel, human endothelial receptor tyrosine kinase which may play an important role in blood

Vascular endothelial growth factor receptor 2 as a marker for malignant vascular tumors and mesothelioma: an immunohistochemical study of 262 vascular endothelial and 1640 nonvascular tumors.

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Vascular endothelial growth factor receptor 2 (VEGFR2) is a primary responder to vascular endothelial growth factor signal and thereby regulates endothelial migration and proliferation. This receptor is expressed in endothelial cells and in some vascular tumors, but many reports also detail its

Lymphoid and mesenchymal tumors in transgenic mice expressing the v-fps protein-tyrosine kinase.

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src, abl, and fps/fes are prototypes for a family of genes encoding nonreceptor protein-tyrosine kinases. The oncogenic potential of the v-fps protein-tyrosine kinase was investigated by introduction of the gag-fps coding sequence of Fujinami sarcoma virus into the mouse germ line. Transgenic mice

Vascular endothelial growth factor confers a growth advantage in vitro and in vivo to stromal cells cultured from neonatal hemangiomas.

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Neonatal hemangioma is a common benign proliferation of unorganized structures containing stromal and capillary endothelial cells. We tested the hypothesis that such cell proliferation might result from the release by stromal cells of endothelial cell mitogens. Stromal cells cultured from biopsies

ShcA and Grb2 mediate polyoma middle T antigen-induced endothelial transformation and Gab1 tyrosine phosphorylation.

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Middle T antigen (PymT) is the principal transforming component of polyomavirus, and rapidly induces hemangiomas in neonatal mice. PymT, a membrane-associated scaffold, recruits and activates Src family tyrosine kinases, and, once tyrosine phosphorylated, binds proteins with PTB and SH2 domains such

PET with L-[1-carbon-11]-tyrosine to visualize tumors and measure protein synthesis rates.

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We studied the potential of PET with L-[1-11C]-tyrosine (TYR) to visualize tumors outside the central nervous system and to quantify their protein synthesis rates (PSRs). METHODS Twenty-two patients suspected of having a malignant tumor underwent a PET study with TYR before biopsy. The PSR in

Genetic mapping of a novel familial form of infantile hemangioma.

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Infantile hemangiomas are the most common tumor of infancy, occurring with an incidence of up to 10% of all births. They are benign but highly proliferative lesions involving aberrant localized growth of capillary endothelium. Although most hemangiomas occur sporadically and as single lesions, or in

[Profile of Activation of Tyrosine Kinases and MAP Kinases in Therapy of Maffucci Syndrome].

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BACKGROUND Maffucci syndrome is a rare congenital nonhereditary disease characterized by multiple hemangiomas and enchondromas, which may progress into malignancy. The causal therapy does not exist, and therapy is aimed at complications. The determination of appropriate therapy is complicated, and a

The Fps/Fes protein-tyrosine kinase promotes angiogenesis in transgenic mice.

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The fps/fes proto-oncogene encodes a cytoplasmic protein-tyrosine kinase known to be highly expressed in hematopoietic cells. To investigate fps/fes biological function, an activating mutation was introduced into the human fps/fes gene which directs amino-terminal myristylation of the Fps/Fes

Intrinsic regulation of hemangioma involution by platelet-derived growth factor.

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Infantile hemangioma is a vascular tumor that exhibits a unique natural cycle of rapid growth followed by involution. Previously, we have shown that hemangiomas arise from CD133+ stem cells that differentiate into endothelial cells when implanted in immunodeficient mice. The same clonally expanded

The changes in angiogenic gene expression in recurrent multiple chorioangiomas.

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OBJECTIVE To assess the messenger ribonucleic acid expression in placental tissue of growth factors, cytokines, angiogenic and anti-angiogenic factors in one case of recurrent multiple chorioangiomas. METHODS Complementary deoxyribonucleic acid array analysis was performed on the affected placentae

Familial predisposition to tufted angioma: identification of blood and lymphatic vascular components.

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Tufted angioma is a rare benign vascular lesion of unknown etiology which mainly affects children under 5 years. It is characterized by nodules or tufts of capillary-sized vessels in the dermis. Here we report the second familial occurrence of tufted angioma, with a mode of inheritance compatible

Tyrosine kinase activity may be necessary but is not sufficient for c-erbB1-mediated tissue-specific tumorigenicity.

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Expression of mutant avian c-erbB1 genes results in tissue-specific transformation in chickens. Site-directed mutagenesis was used to generate kinase-defective mutants of several tissue-specific v-erbB transforming mutants by replacement of the ATP-binding lysine residue in the kinase domain with an

ALV-J GP37 molecular analysis reveals novel virus-adapted sites and three tyrosine-based Env species.

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Compared to other avian leukosis viruses (ALV), ALV-J primarily induces myeloid leukemia and hemangioma and causes significant economic loss for the poultry industry. The ALV-J Env protein is hypothesized to be related to its unique pathogenesis. However, the molecular determinants of Env for ALV-J

IGF-2 and FLT-1/VEGF-R1 mRNA levels reveal distinctions and similarities between congenital and common infantile hemangioma.

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Common infantile hemangioma appears postnatally, grows rapidly, and regresses slowly. Two types of congenital vascular tumors present fully grown at birth and behave differently from infantile hemangioma. These rare congenital tumors have been designated rapidly involuting congenital hemangioma

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