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- W2146088892 abstract "Left heart disease (LHD) frequently causes lung vascular remodelling and pulmonary hypertension (PH). Yet pharmacological treatment for PH in LHD is lacking and its pathophysiological basis remains obscure. We aimed to identify candidate mechanisms of PH in LHD and to test their relevance and therapeutic potential. In rats, LHD was induced by supracoronary aortic banding. Whole genome microarray analyses were performed, candidate genes were confirmed by RT-PCR and Western blots and functional relevance was tested <i>in vivo</i> by genetic and pharmacological strategies. In lungs of LHD rats, mast cell activation was the most prominently upregulated gene ontology cluster. Mast cell gene upregulation was confirmed at RNA and protein levels and remodelled vessels showed perivascular mast cell accumulations. In LHD rats treated with the mast cell stabiliser ketotifen, or in mast cell deficient <i>Ws</i>/<i>Ws</i> rats, PH and vascular remodelling were largely attenuated. Both strategies also reduced PH and vascular remodelling in monocrotaline-induced pulmonary arterial hypertension, suggesting that the role of mast cells extends to non-cardiogenic PH. In PH of different aetiologies, mast cells accumulate around pulmonary blood vessels and contribute to vascular remodelling and PH. Mast cells and mast cell-derived mediators may present promising targets for the treatment of PH." @default.
- W2146088892 created "2016-06-24" @default.
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- W2146088892 date "2010-12-09" @default.
- W2146088892 modified "2023-10-15" @default.
- W2146088892 title "Mast cells promote lung vascular remodelling in pulmonary hypertension" @default.
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- W2146088892 doi "https://doi.org/10.1183/09031936.00043310" @default.
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