retinoic acid/ساركومة

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Inhibition of AIDS-Kaposi's sarcoma cell proliferation following retinoic acid receptor activation.

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Retinoids, a group of natural and synthetic vitamin A analogues the receptors of which belong to the superfamily of steroid receptors, can exert profound effects on growth and/or differentiation of embryonic and neoplastic cells. Kaposi's sarcoma (KS), previously a rare multicentric neoplasm, has

Phase I/II study of intermittent all-trans-retinoic acid, alone and in combination with interferon alfa-2a, in patients with epidemic Kaposi's sarcoma.

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OBJECTIVE A phase I/II study of oral all-trans-retinoic acid (ATRA; tretinoin), administered every other week alone and then in combination with interferon (IFN) alfa-2a, was undertaken to evaluate the activity, toxicity, and pharmacokinetics of this regimen in patients with human immunodeficiency

All-trans retinoic acid for the treatment of AIDS-related Kaposi's sarcoma: results of a pilot phase II study.

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Retinoids have anti-tumor activity in several malignant and premalignant conditions. Since Kaposi's sarcoma is regulated by steroid hormones both in vivo and in vitro, we hypothesized that retinoids may have anti-tumor effects in AIDS-related Kaposi's sarcoma. Thus, 27 patients with mucocutaneous,

Synergistic effects of 8-chlorocyclic-AMP and retinoic acid on induction of apoptosis in Ewing's sarcoma CHP-100 cells.

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The enhanced expression of the regulatory subunit of cyclic AMP (cAMP)-dependent protein kinase type I, RIalpha, has been correlated with cancer cell growth. Retinoic acid (RA) has been shown to play an important role in the regulation of proliferation and differentiation in neoplastic cells. In the

Differential response of retinoic acid pretreated human synovial sarcoma cell line to anticancer drugs.

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The response of tumorigenic human synovial sarcoma (HSS) cell line to 10(-5)M optimum concentration of retinoic acid (RA) included changes in morphology, growth rate, suppression of anchorage-independent growth, induction of high alkaline phosphatase activity and excessive secretion of a 68 kDA

Curative effects of all-trans-retinoic acid on rat sarcomas.

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The effects of all-trans-retinoic acid (all-trans-RA) on benzo(a)pyrene [B(a)P]-induced malignant sarcomas in Sprague-Dawley female rats were evaluated. Ninety-eight days after B(a)P administration, all-trans-RA was daily injected to animals with or without clinically palpable tumors. The growth of

Prevention by retinoic acid of anionic site redistribution on the surface of cultured human sarcoma cells.

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The distribution of cell surface negatively-charged macromolecules was determined electron microscopically on untreated and on retinoic acid (RA)-treated cultured human osteosarcoma Hs791 and chondrosarcoma Hs705 cells using cationized ferritin (CF), an electron-dense marker of anionic sites.

Viral interferon regulatory factor 1 of Kaposi's sarcoma-associated herpesvirus interacts with a cell death regulator, GRIM19, and inhibits interferon/retinoic acid-induced cell death.

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Kaposi's sarcoma-associated herpesvirus (KSHV) plays a significant role in the development of Kaposi's sarcoma, primary effusion lymphoma, and some forms of multicentric Castleman's disease. The KSHV open reading frame K9 encodes the viral interferon (IFN) factor 1 (vIRF1), which downregulates IFN-

Growth inhibition in clonal subpopulations of a human epithelioid sarcoma cell line by retinoic acid and tumour necrosis factor alpha.

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Epithelioid sarcoma is a highly malignant soft tissue tumour that is refractory to conventional chemotherapy and irradiation. Since permanent cell lines of this tumour are extremely rare, in vitro data on compounds with significant antiproliferative effects are still lacking. Therefore, we

Modulation by retinoic acid of cellular, surface-exposed, and secreted glycoconjugates in cultured human sarcoma cells.

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The effect of beta-all-trans-retinoic acid (RA) on the synthesis of cellular, cell surface, and secreted glycoconjugates by human Hs705 chondrosarcoma and Hs791 osteosarcoma cells was investigated in vitro. Untreated and RA-treated cells were labeled either metabolically with radioactive precursors

Anti-tumour effect of an aromatic retinoic acid analog in a mouse syngeneic transplantable sarcoma.

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Anti-tumour activity of an aromatic retinoic acid analog has been tested on Sarcoma J in syngeneic system. Tumour complete regression rate and median survival time of progressors mice are significantly improved. These results are at variance with previous observations suggesting the lack of activity

9-cis-retinoic acid capsules in the treatment of AIDS-related Kaposi sarcoma: results of a phase 2 multicenter clinical trial.

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OBJECTIVE To evaluate the safety, dose tolerance, and anti-tumor effects of 9-cis-retinoic acid in the treatment of Kaposi sarcoma (KS) related to acquired immunodeficiency syndrome (AIDS). METHODS Phase 2, open-label clinical trial of oral doses of 9-cis-retinoic acid increasing in 40-mg increments

Treatment of early AIDS-related Kaposi's sarcoma with oral all-trans-retinoic acid: results of a sequential non-randomized phase II trial. Kaposi's Sarcoma ANRS Study Group. Agence Nationale de Recherches sur le SIDA.

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OBJECTIVE To assess the efficacy and safety of all-trans-retinoic acid (ATRA), a retinoid with antitumour activity that inhibits in vitro the growth of Kaposi's sarcoma cells, in patients with low-risk AIDS-associated Kaposi's sarcoma. METHODS Non-randomized phase II study, using a group sequential

Phase II trial of 13-cis-retinoic acid for poor risk HIV-associated Kaposi's sarcoma.

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Fifteen men with HIV-associated Kaposi's sarcoma (KS) and poor risk disease according to the TIS staging were enrolled in a phase II trial of oral 13-cis-retinoic acid. The median CD4 cell count was 95 cells/microl (range 7-260) and 6 had prior AIDS-defining opportunistic infections. One patient was

Antitumor activity of oral 9-cis-retinoic acid in HIV-associated Kaposi's sarcoma.

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OBJECTIVE To assess the efficacy, safety and tolerance of oral 9-cis-retinoic acid in HIV-infected patients with Kaposi's sarcoma. METHODS Sixty-six patients with AIDS-related Kaposi's sarcoma were enrolled at 14 centers; 60 received the study medication and were analyzed and, of these, 45 (75%) had

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