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14 resultados
PTK787/ZK222584, a tyrosine kinase inhibitor of vascular endothelial growth factor receptor, reduces uptake of the contrast agent GdDOTA by murine orthotopic B16/BL6 melanoma tumours and inhibits their growth in vivo.
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Assessment of tumour vascularity may characterize malignancy as well as predict responsiveness to anti-angiogenic therapy. Non-invasive measurement of tumour perfusion and blood vessel permeability assessed as the transfer constant, K(trans), can be provided by dynamic contrast-enhanced magnetic
Tyrosine kinase-activating growth factors potentiate thrombin- and AIF4- -induced phosphoinositide breakdown in hamster fibroblasts. Evidence for positive cross-talk between the two mitogenic signaling pathways.
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Basic fibroblast growth factor (FGF) and alpha-thrombin can stimulate DNA synthesis in Chinese hamster fibroblasts (CCL39) by two separate signaling pathways (Chambard, J.C., Paris, S., L'Allemain, G., and Pouysségur, J. (1987) Nature 326, 800-803) but can also act synergistically. We have examined
Analysis of ten candidate genes in autism by association and linkage.
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We studied the possible involvement of ten candidate genes in autism: proenkephalin, prodynorphin, and proprotein convertase subtilisin/kexin type 2 (opioid metabolism); tyrosine hydroxylase, dopamine receptors D2 and D5, monoamine oxidases A and B (monoaminergic system); brain-derived neurotrophic
The advances of hyposensibilisation therapy in bronchial asthma patients allergic to house dust antigen.
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The hyposensibilisation therapy was realized in a population of 72 adult asthma patients allergic to house dust, feathers and molds. In this number 52 patients were treated by aqueous extracts of allergens produced by Pasteur Institute in Paris (20 patients by house dust extract only) and 20
The c-Abl inhibitor in Parkinson disease.
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Parkinson's disease (PD) is an insidious onset neurodegenerative disease affecting approximately 1% of the population over the age of 65. So far available therapies for PD have only aimed at improving or alleviating symptoms, but not at slowing, preventing, and reversing the course of PD. Recently,
The c-Abl inhibitor, nilotinib, protects dopaminergic neurons in a preclinical animal model of Parkinson's disease.
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c-Abl is activated in the brain of Parkinson's disease (PD) patients and in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-intoxicated mice where it inhibits parkin through tyrosine phosphorylation leading to the accumulation of parkin substrates, and neuronal cell death. In the present study,
Novel nonsense mutation in the hypoxanthine guanine phosphoribosyltransferase gene and nonrandom X-inactivation causing Lesch-Nyhan syndrome in a female patient.
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Lesch-Nyhan (LN) disease is a severe X-linked recessive neurological disorder associated with a loss of hypoxanthine guanine phosphoribosyltransferase activity (HPRT, EC 2.4.2.8). We have studied the second example of a female patient with LN disease. The molecular basis of HPRT deficiency in this
Antiapoptotic Effect of Paricalcitol in Gentamicin-induced Kidney Injury.
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While the anti-apoptotic effect of paricalcitol has been demonstrated in various animal models, it is not yet clear whether paricalcitol attenuates the apoptosis in gentamicin (GM)-induced kidney injury. We investigated the effect of paricalcitol on apoptotic pathways in rat kidneys damaged by GM.
Polyphyllin I Overcomes EMT-Associated Resistance to Erlotinib in Lung Cancer Cells via IL-6/STAT3 Pathway Inhibition.
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Acquired resistance to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) is the most important limiting factor for treatment efficiency in EGFR-mutant non-small cell lung cancer (NSCLC). Much work has linked the epithelial-mesenchymal transition (EMT) to the emergence of drug
Polyphyllin II Restores Sensitization of the Resistance of PC-9/ZD Cells to Gefitinib by a Negative Regulation of the PI3K/Akt/mTOR Signaling Pathway.
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EGFR tyrosine kinase inhibitors (TKIs) are widely used for advanced nonsmall cell lung cancer (NSCLC) patients with a sensitizing EGFR mutation and provide a promising treatment strategy. However, acquired resistance to EGFR-TKIs restricts their application. The mechanisms underlying acquired
Disparate contributions of Tyr10 and Tyr109 to fluorescence intensity of rabbit skeletal muscle troponin C identified using a genetically engineered mutant.
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Intrinsic tyrosines, as monitored by fluorescence spectroscopy, are sensitive reporters of local, Ca(2+)-induced conformational changes in troponin C (TnC). Rabbit skeletal TnC contains two tyrosines (Y10 in the N-helix, and Y109 in site 3 in the C-terminal domain) in distinct microenvironments:
Resistant myasthenia gravis and rituximab: A monocentric retrospective study of 28 patients.
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This retrospective study evaluated the efficiency and tolerance of rituximab in the management of resistant myasthenia gravis (MG). All patients who received rituximab for the treatment of MG between 2004 and 2015 at Pitié-Salpétrière University Hospital (Paris, France) were included. The efficacy
EGFR and KRAS mutation status in non-small-cell lung cancer occurring in HIV-infected patients.
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Non-small-cell lung cancer (NSCLC) is the most common non-acquired immune deficiency syndrome-related malignancy responsible for death. Mutational status is crucial for choosing treatment of advanced NSCLC, yet no data is available on the frequency of epidermal growth factor receptor (EGFR) and
B lymphocytes inactivation by Ibrutinib limits endometriosis progression in mice.
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* Toda la información se basa en investigaciones científicas publicadas.
