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• W2947346314 abstract "Medical therapy of lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia (BPH) targets smooth muscle contraction in the prostate, for which α1A-adrenoceptor (α1A-AR) antagonists have been considered to be the primary therapeutic method. We investigated the effects and underlying mechanisms of isocorynoxeine (ICN), one of indole alkaloids from Uncaria, on the treatment of LUTS secondary to BPH via α1A-ARs in mice. The effect of ICN on prostatic contractility was studied via myographic measurements in the prostates of rabbits. The effects of ICN on bladder function, serum-hormone levels, bladder histology, and prostate histology were determined in testosterone propionate-induced prostatic hyperplasic wild-type (WT) and α1A-AR knockout (α1A-KO) mice. The cytotoxicity of ICN in cultured human prostatic stromal cells (WPMY-1) was assessed by the following: a cell-counting kit, measuring the relaxant effect on WPMY-1 by a collagen gel contraction assay, intracellular Ca2+ mobilization indicated by Fluo-4, cytoskeletal organization by phalloidin staining, and expressions of α1A-AR-mediated key messengers by western blot analyses. ICN non-competitively antagonized the contractions of prostates induced by α1A-AR agonists. ICN treatment improved bladder functions in prostatic hyperplasic WT mice, whereas it failed to ameliorate bladder functions in prostatic hyperplasic α1A-KO mice. In WPMY-1, ICN relaxed cell contractions on collagen gels, disrupted F-actin organization, inhibited α1A-AR agonist-stimulated Ca2+ mobilization, and antagonized α1A-ARs via the RhoA/ROCK2/MLC signaling pathway. Our results suggest that ICN may be a promising therapeutic drug for targeting α1A-ARs in the treatment of BPH/LUTS." @default.
• W2947346314 created "2019-06-07" @default.
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• W2947346314 date "2019-08-01" @default.
• W2947346314 modified "2023-09-27" @default.
• W2947346314 title "Effects of isocorynoxeine, from Uncaria, on lower urinary tract dysfunction caused by benign prostatic hyperplasia via antagonism of α1A-adrenoceptors" @default.
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• W2947346314 doi "https://doi.org/10.1016/j.taap.2019.05.018" @default.
• W2947346314 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31145917" @default.
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