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Britto-Júnior J, Guimarães RAB, Oliveira DL, Lima AT, Quirino Junior G, de Oliveira Stocco GA, Salgado Uramoto EH, Fregonesi A, Antunes E, De Nucci G. Alpha 1-adrenergic blockers selectively antagonize the contractions induced by 6-nitrodopamine in the human vas deferens. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:3227-3238. [PMID: 37910185 DOI: 10.1007/s00210-023-02805-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 10/19/2023] [Indexed: 11/03/2023]
Abstract
6-Nitrodopamine (6-ND) is released from human vas deferens and plays a modulatory role in the male ejaculation. Therapeutical use of α1-adrenoceptor antagonists is associated with ejaculatory abnormalities. To evaluate the effect of α1-adrenoceptor antagonists on the contractions induced by 6-ND, dopamine, noradrenaline, and adrenaline in the human epididymal vas deferens (HEVD). HEVD strips were suspended in glass chambers containing heated and oxygenated Krebs-Henseleit's solution. Cumulative concentration-response curves to catecholamines (10 nM-300 μM) were constructed in HEVD strips pre-incubated (30 min) with doxazosin (0.1-1 nM), tamsulosin (1-10 nM), prazosin (10-100 nM) and/or silodosin (0.1-10 nM). The effects of these α1-adrenoceptor antagonists were also evaluated in the electric-field stimulation (EFS, 2-32 Hz)-induced contractions. Doxazosin (0.1 nM) caused significant reductions in 6-ND-induced HEVD contractions without affecting the contractions induced by dopamine, noradrenaline, and adrenaline. Similar results were observed with tamsulosin (1 nM) and prazosin (10 nM). At these concentrations, these α1-adrenoceptor antagonists largely reduced the EFS-induced contractions. Silodosin (1 nM) caused concentration-dependent rightward shifts of the concentration-response curves to 6-ND but had no effect on the contractions induced by dopamine and adrenaline. Silodosin (0.1 nM) only inhibited the contractions induced by noradrenaline. Silodosin at 1 nM, but not at 0.1 nM, caused significant reductions in the EFS-induced contractions. The results reinforce the concept that 6-ND plays a major role in the human vas deferens contractility and indicate that the ejaculation disorders caused by doxazosin, tamsulosin, prazosin and silodosin cause in man, may be due to inhibition of the contractions induced by 6-ND rather than by the classical catecholamines dopamine, noradrenaline, and adrenaline.
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Affiliation(s)
- José Britto-Júnior
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil.
| | - Renan Arthur Bosio Guimarães
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil
| | - Denis Lima Oliveira
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil
| | - Antonio Tiago Lima
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil
| | - Gilberto Quirino Junior
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil
| | - Gabriel Augusto de Oliveira Stocco
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil
| | | | - Adriano Fregonesi
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil
- Department of Surgery, Faculty of Medicine of Jundiaí, Jundiaí, Brazil
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil
| | - Gilberto De Nucci
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, 126 Tessália Vieira de Camargo St, Campinas, Sao Paulo, 13083-887, Brazil
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Metropolitan University of Santos, Santos, Brazil
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Guo D, Li J, Lin H, Zhou Y, Chen Y, Zhao F, Sun H, Zhang D, Li H, Shoichet BK, Shan L, Zhang W, Xie X, Jiang H, Liu H. Design, Synthesis, and Biological Evaluation of Novel Tetrahydroprotoberberine Derivatives (THPBs) as Selective α 1A-Adrenoceptor Antagonists. J Med Chem 2016; 59:9489-9502. [PMID: 27709945 DOI: 10.1021/acs.jmedchem.6b01217] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel series of tetrahydroprotoberberine derivatives (THPBs) were designed, synthesized, and evaluated as selective α1A-adrenergic receptors (AR) antagonists for the treatment of benign prostatic hyperplasia. On the basis of the pharmacophore model of the marketed drug silodosin, THPBs were modified by introducing an indole segment into their core scaffolds. In calcium assays, 7 out of 32 compounds displayed excellent antagonistic activities against α1A-ARs, with IC50 less than 250 nM. Among them, compound (S)-27 had the most potent biological activity; its IC50 toward α1A-AR was 12.8 ± 2.2 nM, which is 781 and 20 times more selective than that toward α1B- and α1D-AR, respectively. In the functional assay using isolated rat tissues, compound (S)-27 inhibited norepinephrine-induced urethra smooth muscle contraction potently (IC50 = 0.5 ± 0.3 nM), without inhibiting the aortic contraction (IC50 > 1000 nM), displaying a better tissue selectivity than the marketed drug silodosin. Additional results of preliminary safety studies (acute toxicity and hERG inhibition) and pharmacokinetics studies indicated the potential druggability for compound (S)-27 which is a promising lead for the development of selective α1A-AR antagonists for the treatment of BPH.
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Affiliation(s)
- Diliang Guo
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Jing Li
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Henry Lin
- Department of Pharmaceutical Chemistry, University of California-San Francisco , San Francisco, California 94158, United States
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Ying Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Fei Zhao
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Haifeng Sun
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Dan Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Honglin Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology , Shanghai 200237, China
| | - Brian K Shoichet
- Department of Pharmaceutical Chemistry, University of California-San Francisco , San Francisco, California 94158, United States.,Department of Pharmacology, University of North Carolina Chapel Hill School of Medicine , Chapel Hill, North Carolina 27516, United States
| | - Lei Shan
- Department of Natural Product Chemistry, School of Pharmacy, Second Military Medical University , 325 Guohe Road, Shanghai 200433, China
| | - Weidong Zhang
- Department of Natural Product Chemistry, School of Pharmacy, Second Military Medical University , 325 Guohe Road, Shanghai 200433, China
| | - Xin Xie
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Hualiang Jiang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
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Xie SS, Wang XB, Li JY, Kong LY. Design, synthesis and biological evaluation of novel 7-mercaptocoumarin derivatives as α(1)-adrenoceptor antagonists. Chem Pharm Bull (Tokyo) 2013; 61:16-24. [PMID: 23302583 DOI: 10.1248/cpb.c12-00531] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Study on the pharmacophore model of α(1)-adrenoceptor (α(1)-AR) antagonists led to design a series of novel 7-mercaptocoumarin derivatives as α(1)-AR antagonists. All designed compounds have been synthesized and biologically evaluated. The results showed that most of them exhibited strong antagonistic activity. Especially compound 6 showed excellent activity, which was better than that of the reference compound prazosin. Structure-activity relationship studies revealed that small hydrophobic group at the terminal heterocyclic ring and ortho substituents on the phenyl ring of phenylpiperazine moiety were the essential structural factors for α(1)-AR antagonistic activity. The pharmacophore modeling studies further clarified their structural contributions to antagonistic activity and also demonstrated that 7-mercaptocoumarin moiety could be a useful scaffold for design of α(1)-AR antagonists.
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Affiliation(s)
- Sai-Sai Xie
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
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Chiu G, Connolly PJ, Middleton SA, Li S, Pulito V, Liu J, Baxter EW, Reitz AB. α1a/1d-selective adrenergic receptor antagonists for the treatment of benign prostatic hyperplasia/lower urinary tract symptoms. Expert Opin Ther Pat 2008. [DOI: 10.1517/13543770802571659] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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