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Journal: Antidepressants induce profibrotic responses via the lysophosphatidic acid receptor LPA. (Pubmed Central) - Nov 28, 2020 In both cell types amitriptyline, clomipramine and mianserin mimicked the ability of LPA to induce the phosphorylation/activation of extracellular signal -regulated kinases 1 and 2 (ERK1/2), which was blocked by the selective LPA receptor antagonist AM966 and the LPA antagonist Ki16425...Like LPA, antidepressants stimulated fibroblasts proliferation and this effect was blocked by either AM966 or the MEK1/2 inhibitor PD98059...Pharmacological blockade of TGF-β receptor type 1 prevented antidepressant- and LPA-induced α-SMA expression. These data indicate that in human dermal and lung fibroblasts different antidepressants can induce proliferative and differentiating responses by activating the LPA receptor coupled to ERK1/2 signalling and suggest that this property may contribute to the promotion of tissue fibrosis by these drugs.
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Radiation Inducing Pulmonary Cellular Senescence through the LPA-LPA1-Akt Pathway (Room W192) - Sep 24, 2019 - Abstract #ASTRO2019ASTRO_4623; All above were ameliorated by AM966 or MK2206 pretreatment, while SC79 could counteract the effect of AM966.Conclusion LPA in high concentrations participates in the radiation-induced pulmonary cellular senescence through the LPA-LPA1-Akt signaling. Selectively blocking LPA1 by AM966 in the early stage could significantly ameliorate pulmonary cellular senescence and injuries.
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Journal: Pharmacologic targeting of the ATX/LPA axis attenuates bleomycin-induced pulmonary fibrosis. (Pubmed Central) - Mar 29, 2019 In this report, we examined head-to-head the efficacy of a potent inhibitor of ATX (PF-8380), that has not been tested in pulmonary fibrosis models, and an antagonist of LPAR1 (AM095) in bleomycin (BLM)-induced pulmonary fibrosis. Both compounds abrogated the development of pulmonary fibrosis and prevented the distortion of lung architecture, exhibiting qualitative and quantitative differences in different manifestations of the modeled disease.
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