1
|
Britto-Júnior J, da Silva-Filho WP, Amorim AC, Campos R, Moraes MO, Moraes MEA, Fregonesi A, Monica FZ, Antunes E, De Nucci G. 6-nitrodopamine is a major endogenous modulator of human vas deferens contractility. Andrology 2022; 10:1540-1547. [PMID: 35934935 DOI: 10.1111/andr.13263] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/30/2022] [Accepted: 08/04/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Rat isolated vas deferens releases 6-nitrodopamine (6-ND), and the spasmogenic activity of this novel catecholamine is significantly reduced by tricyclic compounds such as amitriptyline, desipramine, and carbamazepine and by antagonists of the α1 -adrenergic receptors such as doxazosin, tamsulosin, and prazosin. OBJECTIVES To investigate the liberation of 6-ND by human epididymal vas deferens (HEVDs) and its pharmacological actions. METHODS The in vitro liberation of 6-ND, dopamine, noradrenaline, and adrenaline from human vas deferens was evaluated by LC-MS/MS. The contractile effect of the catecholamines in HEVDs was investigated in vitro. The action of tricyclic antidepressants was evaluated on the spasmogenic activity ellicited by the catecholamines and by the electric-field stimulation (EFS). The tissue was also incubated with the inhibitor of nitric oxide (NO) synthase L-NAME and the release of catecholamines and the contractile response to EFS were assessed. RESULTS 6-ND is the major catecholamine released from human vas deferens and its synthesis/release is inhibited by NO inhibition. The spasmogenic activity elicited by EFS in the human vas deferens was blocked by tricyclic antidepressants only at concentrations that selectively antagonize 6-ND induced contractions of the human vas deferens, without affecting the spasmogenic activity induced by dopamine, noradrenaline, and adrenaline in this tissue. Incubation of the vas deferens with L-NAME reduced both the 6-ND release and the contractions induced by EFS. DISCUSSION AND CONCLUSION 6-ND should be considered a major endogenous modulator of human vas deferens contractility and possibly plays a pivotal role in the emission process of ejaculation. It offers a novel and shared mechanism of action for tricyclic antidepressants and α1 -adrenergic receptor antagonists.
Collapse
Affiliation(s)
- José Britto-Júnior
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
| | - Walter Pinto da Silva-Filho
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
| | - Amanda Consulin Amorim
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
| | - Rafael Campos
- Clinical Pharmacology Unit, Drug Research and Development Center, Federal University of Ceará, Fortaleza, Ceará, Brazil.,Superior Institute of Biomedical Sciences, Ceará State University, Fortaleza, Ceará, Brazil
| | - Manoel Odorico Moraes
- Clinical Pharmacology Unit, Drug Research and Development Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Maria Elisabete A Moraes
- Clinical Pharmacology Unit, Drug Research and Development Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Adriano Fregonesi
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
| | - Fabiola Z Monica
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
| | - Gilberto De Nucci
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil.,Clinical Pharmacology Unit, Drug Research and Development Center, Federal University of Ceará, Fortaleza, Ceará, Brazil.,Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, São Paulo, Brazil.,Deparment of Pharmacology, Faculty of Medicine, Metropolitan University of Santos, Santos, São Paulo, Brazil
| |
Collapse
|
2
|
Bezerra MS, Martins ABM, Trajano FMG, Pontes THDA, Gomes LTDC, Gavioli EC, Silva Junior EDD. Fluoxetine and sertraline effects on rat distal cauda epididymis contraction, sperm count and sperm transit time trough epididymis. Eur J Pharmacol 2019; 865:172774. [DOI: 10.1016/j.ejphar.2019.172774] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/24/2019] [Accepted: 11/01/2019] [Indexed: 01/15/2023]
|
3
|
Jannini EA, Ciocca G, Limoncin E, Mollaioli D, Di Sante S, Gianfrilli D, Lombardo F, Lenzi A. Premature ejaculation: old story, new insights. Fertil Steril 2015; 104:1061-73. [DOI: 10.1016/j.fertnstert.2015.08.035] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 08/21/2015] [Accepted: 08/24/2015] [Indexed: 01/26/2023]
|
4
|
Mietens A, Tasch S, Stammler A, Konrad L, Feuerstacke C, Middendorff R. Time-lapse imaging as a tool to investigate contractility of the epididymal duct--effects of cGMP signaling. PLoS One 2014; 9:e92603. [PMID: 24662987 PMCID: PMC3963912 DOI: 10.1371/journal.pone.0092603] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 02/24/2014] [Indexed: 01/01/2023] Open
Abstract
The well orchestrated function of epididymal smooth muscle cells ensures transit of spermatozoa through the epididymal duct during which spermatozoa acquire motility and fertilizing capacity. Relaxation of smooth muscle cells is mediated by cGMP signaling and components of this pathway are found within the male reproductive tract. Whereas contractile function of caudal parts of the rat epididymal duct can be examined in organ bath studies, caput and corpus regions are fragile and make it difficult to mount them in an organ bath. We developed an ex vivo time-lapse imaging-based approach to investigate the contractile pattern in these parts of the epididymal duct. Collagen-embedding allowed immobilization without impeding contractility or diffusion of drugs towards the duct and therefore facilitated subsequent movie analyses. The contractile pattern was made visible by placing virtual sections through the acquired image stack to track wall movements over time. By this, simultaneous evaluation of contractile activity at different positions of the observed duct segment was possible. With each contraction translating into a spike, drug-induced alterations in contraction frequency could be assessed easily. Peristaltic contractions were also detectable and throughout all regions in the proximal epididymis we found regular spontaneous contractile activity that elicited movement of intraluminal contents. Stimulating cGMP production by natriuretic peptide ANP or inhibiting degradation of cGMP by the phosphodiesterase 5 inhibitor sildenafil significantly reduced contractile frequency in isolated duct segments from caput and corpus. RT-PCR analysis after laser-capture microdissection localized the corresponding molecules to the smooth muscle layer of the duct. Our time-lapse imaging approach proved to be feasible to assess contractile function in all regions of the epididymal duct under near physiological conditions and provides a tool to evaluate acute (side) effects of drugs and to investigate various signaling pathways.
Collapse
Affiliation(s)
- Andrea Mietens
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Sabine Tasch
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Angelika Stammler
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Lutz Konrad
- Department of Gynecology and Obstetrics, Justus-Liebig-University Giessen, Giessen, Germany
| | - Caroline Feuerstacke
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Ralf Middendorff
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| |
Collapse
|
5
|
Lin KL, Chi CC, Lu T, Tseng LL, Wang JL, Lu YC, Jan CR. Effect of sertraline on [Ca2+](i) and viability of human MG63 osteosarcoma cells. Drug Chem Toxicol 2012; 36:231-40. [PMID: 22931138 DOI: 10.3109/01480545.2012.710625] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The antidepressant, sertraline, has been shown to have diverse in vitro effects. This study examined whether sertraline altered [Ca(2+)](i) in MG63 human osteosarcoma cells by using fura-2 as a Ca(2+)-sensitive fluorescent dye. At 50-200 µM, sertraline induced a [Ca(2+)](i) rise in a concentration-dependent manner. Ca(2+) response was decreased by removing extracellular Ca(2+), suggesting that Ca(2+) entry and release contributed to the [Ca(2+)](i) signal. Sertraline-induced Ca(2+) entry was inhibited by nifedipine, La(3+), Gd(3+), and SK&F96365. When extracellular Ca(2+) was removed, pretreatment with the endoplasmic reticulum (ER) Ca(2+) pump inhibitor, thapsigargin, or 2,5-di-tert-butylhydroquinone (BHQ) abolished the sertraline-evoked [Ca(2+)](i) rise. Incubation with sertraline also abolished the thapsigargin or BHQ-induced [Ca(2+)](i) rise. Inhibition of phospholipase C (PLC) with U73122 abolished the sertraline-induced [Ca(2+)](i) rise. At 20-30 µM, overnight treatment with sertraline killed cells in a concentration-dependent manner. The cytotoxic effect of sertraline was not reversed by chelating cytosolic Ca(2+) with 1,2-bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA). Annexin V/propidium iodide staining data demonstrate that sertraline (30 µM) evoked apoptosis. Sertraline (20 and 30 µM) also increased levels of reactive oxygen species. Together, in human osteosarcoma cells, sertraline evoked a [Ca(2+)](i) rise by inducing PLC-dependent Ca(2+) release from the ER and Ca(2+) entry by L-type Ca(2+) channels and store-operated Ca(2+) channels. Sertraline induced cell death that may involve apoptosis by mitochondrial pathways.
Collapse
Affiliation(s)
- Ko-Long Lin
- Department of Rehabilitation, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | | | | | | | | | | | | |
Collapse
|
6
|
Fonseca-Magalhães PA, Sousa DF, de Siqueira RJB, Jorge RJB, Meneses GC, Alves RS, Monteiro HSA, Magalhães PJC, Martins AMC. Inhibitory effects of sertraline in rat isolated perfused kidneys and in isolated ring preparations of rat arteries. J Pharm Pharmacol 2011; 63:1186-94. [DOI: 10.1111/j.2042-7158.2011.01317.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Abstract
Objectives
Sertraline is often prescribed to patients suffering with end stage renal disease, but its action on kidney has not been investigated. We aimed to investigate the pharmacological action of sertraline on rat kidney with emphasis on the underlying mechanisms involved in the vascular actions of the drug.
Methods
The effects of sertraline were evaluated in rat isolated perfused kidneys and on ring preparations of mesenteric or segmental rat renal artery.
Key findings
In kidneys, sertraline prevented the effects of phenylephrine on perfusion pressure, glomerular filtration rate, urinary flow and renal vascular resistance. In mesenteric rings sertraline inhibited phenylephrine-induced contractions with potency 30-times lower than verapamil. Sertraline reversed sustained contractions induced by phenylephrine or 60 mm K+ within a similar concentration range. In segmental isolated rings, sertraline also reversed contractions induced by phenylephrine or 60 mm K+ with the same concentration range, but with higher potency compared with mesenteric preparations. Under Ca2+-free conditions, sertraline did not change the intracellularly-mediated phasic contractions induced by phenylephrine or caffeine. Sertraline was ineffective against contractions induced by extracellular Ca2+ restoration after thapsigargin treatment and Ca2+ store depletion with phenylephrine. Conversely, sertraline decreased the contractions induced by Ca2+ addition in tissues under high K+ solution or phenylephrine plus verapamil.
Conclusions
In rat isolated kidneys and in rat ring preparations of mesenteric or renal vessels, sertraline had antispasmodic effects that appeared to be caused by a direct action on vascular smooth muscle cells. Its actions were ineffective against Ca2+-releasing intracellular pathways, but appeared to interfere with sarcolemmal Ca2+ influx with reduced permeability of both receptor- and voltage-gated Ca2+ channels.
Collapse
Affiliation(s)
| | - Daniel F Sousa
- Departamento de Fisiologia e Farmacologia, Ceará, Brasil
| | | | | | - Gdayllon C Meneses
- Análises Clínicas e Toxicológicas, Universidade Federal do Ceará, Ceará, Brasil
| | - Renata S Alves
- Análises Clínicas e Toxicológicas, Universidade Federal do Ceará, Ceará, Brasil
| | | | | | - Alice M C Martins
- Análises Clínicas e Toxicológicas, Universidade Federal do Ceará, Ceará, Brasil
| |
Collapse
|
7
|
Huang JK, Chang HT, Chou CT, Shu SS, Kuo CC, Tsai JY, Liao WC, Wang JL, Lin KL, Lu YC, Chen IS, Liu SI, Ho CM, Jan CR. The mechanism of sertraline-induced [Ca(2+) ](i) rise in human PC3 prostate cancer cells. Basic Clin Pharmacol Toxicol 2011; 109:103-10. [PMID: 21371263 DOI: 10.1111/j.1742-7843.2011.00690.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The effect of sertraline, an antidepressant, on cytosolic-free Ca(2+) levels ([Ca(2+) ](i) ) in human cancer cells is unclear. This study examined whether sertraline altered basal [Ca(2+) ](i) levels in suspended PC3 human prostate cancer cells by using fura-2 as a Ca(2+) -sensitive fluorescent probe. At concentrations of 10-150 μM, sertraline induced a [Ca(2+) ](i) rise in a concentration-dependent fashion. The Ca(2+) signal was reduced partly by removing extracellular Ca(2+) indicating that Ca(2+) entry and release both contributed to the [Ca(2+) ](i) rise. Sertraline induced Mn(2+) influx, leading to quench of fura-2 fluorescence suggesting Ca(2+) influx. This Ca(2+) influx was inhibited by the suppression of store-operated Ca(2+) channels or by the modulation of protein kinase C activity. In Ca(2+) -free medium, pre-treatment with the endoplasmic reticulum Ca(2+) pump inhibitor thapsigargin or 2,5-di-(t-butyl)-1,4-hydroquinone nearly abolished sertraline-induced Ca(2+) release. Conversely, pre-treatment with sertraline greatly reduced the inhibitor-induced [Ca(2+) ](i) rise, suggesting that sertraline released Ca(2+) from the endoplasmic reticulum. Inhibition of phospholipase C inhibited sertraline-induced [Ca(2+) ](i) rise. At 20-30 μM, sertraline killed cells in a concentration-dependent manner. The cytotoxic effect of sertraline was enhanced by chelating cytosolic Ca(2+) with 1,2-bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid/AM. Annexin V-FITC data suggest that sertraline (20 and 30 μM) evoked apoptosis in a concentration-dependent manner. Together, in PC3 human prostate cancer cells, sertraline induced [Ca(2+) ](i) rises by causing phospholipase C-dependent Ca(2+) release from the endoplasmic reticulum and via multiple Ca(2+) influx pathways that involve store-operated Ca(2+) channels. Sertraline also induced apoptosis that was not triggered by [Ca(2+) ](i) rise.
Collapse
Affiliation(s)
- Jong-Khing Huang
- Department of Surgery, Kaohsiung Veterans General Hospital, Taiwan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Chien JM, Chou CT, Pan CC, Kuo CC, Tsai JY, Liao WC, Kuo DH, Shieh P, Ho CM, Chu ST, Su HH, Chi CC, Jan CR. The mechanism of sertraline-induced [Ca2+]i rise in human OC2 oral cancer cells. Hum Exp Toxicol 2011; 30:1635-43. [PMID: 21247994 DOI: 10.1177/0960327110396523] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Effect of sertraline, an antidepressant, on cytosolic free Ca(2+) levels ([Ca(2+)](i)) in human cancer cells is unclear. This study examined if sertraline altered basal [Ca(2+)](i) levels in suspended OC2 human oral cancer by using fura-2 as a Ca(2+)-sensitive fluorescent probe. At concentrations of 10-100 μM, sertraline induced a [Ca(2+)](i) rise in a concentration-dependent fashion. The Ca(2+) signal was reduced partly by removing extracellular Ca(2+) indicating that Ca(2+) entry and release both contributed to the [Ca(2+)](i) rise. Sertraline induced Mn(2+) influx, leading to quench of fura-2 fluorescence suggesting Ca(2+) influx. This Ca(2+) influx was inhibited by suppression of phospholipase A2, inhibition of store-operated Ca(2+) channels or by modulation of protein kinase C activity. In Ca(2+)-free medium, pretreatment with the endoplasmic reticulum Ca(2+) pump inhibitor thapsigargin or 2,5-di-(t-butyl)-1,4-hydroquinone (BHQ) nearly abolished sertraline-induced Ca(2+) release. Conversely, pretreatment with sertraline greatly reduced the inhibitor-induced [Ca(2+)](i) rise, suggesting that sertraline released Ca(2+) from the endoplasmic reticulum. Inhibition of phospholipase C did not change sertraline-induced [Ca(2+)](i) rise. Together, in human oral cancer cells, sertraline induced [Ca(2+)](i) rises by causing phospholipase C-independent Ca(2+) release from the endoplasmic reticulum and Ca(2+) influx via store-operated Ca(2+) channels.
Collapse
Affiliation(s)
- Jau-Min Chien
- Department of Pediatrics, Ping Tung Christian Hospital, Ping Tung, Taiwan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Göçmez SS, Utkan T, Ulak G, Gacar N, Erden F. Effects of long-term treatment with fluoxetine and venlafaxine on rat isolated vas deferens. ACTA ACUST UNITED AC 2010; 30:197-202. [DOI: 10.1111/j.1474-8673.2010.00456.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
10
|
Kadioglu M, Muci E, Ozyavuz R, Yaris E, Kesim M, Kalyoncu NI. Paroxetine inhibited the relaxations induced by EFS in mice corpus cavernosum: is it a NOS inhibition? Fundam Clin Pharmacol 2010; 24:55-61. [DOI: 10.1111/j.1472-8206.2009.00742.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Huang CJ, Kuo DH, Chang KH, Shieh P, Chen FA, Fang YC, Kuo CC, Jan CR. Effect of the antidepressant sertraline on Ca2+ fluxes in Madin-Darby canine renal tubular cells. J Recept Signal Transduct Res 2010; 29:342-8. [PMID: 19883239 DOI: 10.3109/10799890903295135] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The effect of the antidepressant sertraline on cytosolic-free Ca2+ concentrations ([Ca2+]i) in Madin Darby canine kidney (MDCK) cells is unclear. This study explored whether sertraline changed basal [Ca2+]i levels in suspended MDCK cells by using fura-2 as a Ca2+-sensitive fluorescent dye. Sertraline at concentrations between 1 and 100 microM increased [Ca2+]i in a concentration-dependent manner. The Ca2+ signal was reduced partly by removing extracellular Ca2+ implicating Ca2+ entry and release both contributed to the [Ca2+]i rise. Sertraline induced Mn2+ influx, leading to quench of fura-2 fluorescence, suggesting Ca2+ influx. This Ca2+ influx was inhibited by suppression of phospholipase A2 but not by store-operated Ca2+ channel blockers and protein kinase C/A modulators. In Ca2+-free medium, pretreatment with the endoplasmic reticulum Ca2+ pump inhibitors nearly abolished sertraline-induced Ca2+ release. Conversely, pretreatment with sertraline partly reduced inhibitor-induced [Ca2+]i rise, suggesting that sertraline released Ca2+ from endoplasmic reticulum. Inhibition of phospholipase C did not much alter sertraline-induced [Ca2+]i rise. Collectively, in MDCK cells, sertraline induced [Ca2+]i rises by causing phospholipase C-independent Ca2+ release from the endoplasmic reticulum and Ca2+ influx via phospholipase A2-sensitive Ca2+ channels.
Collapse
Affiliation(s)
- Chun-Jen Huang
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Serotonin and Sexual Behavior. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/s1569-7339(10)70089-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
13
|
Pousti A, Bakhtiarian A, Najafi R, Deemyad T, Brumand K, Hosseini MJ. Effect of sertraline on ouabain-induced arrhythmia in isolated guinea-pig atria. Depress Anxiety 2009; 26:E106-10. [PMID: 19242981 DOI: 10.1002/da.20407] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND The effect of sertraline a selective serotonin reuptake inhibitor antidepressant was studied on ouabain-induced toxicity (arrhythmia) in spontaneously beating isolated guinea-pig atria. METHODS The guinea-pig atrium was dissected out and suspended in modified Krebs solution under physiological conditions. Drugs were added into solutions. The changes in rate and force of contractions were measured using a physiograph. RESULTS Sertraline (2-16 microg/mL) caused a dose-dependent decrease in the rate of contractions (17-46%) and in the contractile force (26-48%). Ouabain alone (1.2 microg/mL) produced arrhythmia at 7.8 min and asystole at 22 min. Pre- administration of the atria with sertraline (8 microg/mL) significantly increased the time required to produce arrhythmia by ouabain to 20.5 min, prolonged the beating of atria to more than 64.5 min and delayed the occurrence of asystolia. The pattern of contractile force induced by sertraline + ouabain was more regular than that produced by ouabain alone. CONCLUSIONS These findings indicate that sertraline produces direct cardiac action, probably due to the inhibition of cardiac Na(+) and Ca(2+) channels. Our results suggest that sertraline may reduce the membrane conduction through inhibition of ionic channels which decrease ouabain-induced arrhythmia.
Collapse
Affiliation(s)
- Abbas Pousti
- Department of Pharmacology, Medical School, Tehran University of Medical Sciences, Tehran, Iran.
| | | | | | | | | | | |
Collapse
|
14
|
Effects of amitriptyline, a tricyclic antidepressant, on smooth muscle reactivity in isolated rat trachea. J Anesth 2009; 23:385-91. [PMID: 19685119 DOI: 10.1007/s00540-009-0781-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2007] [Accepted: 04/17/2009] [Indexed: 01/16/2023]
Abstract
PURPOSE This study was designed to investigate the action of amitriptyline, a tricyclic antidepressant, on airway smooth muscle reactivity and its underlying mechanisms. METHODS In isolated rat trachea, isometric force was recorded to examine the effects of amitriptyline on the contractile response to acetylcholine (ACh), electrical field stimulation (EFS), calyculin A (a myosin light chain phosphatase inhibitor), and sphingosylphosphorylcholine (SPC; a Rhokinase activator). In addition, inositol monophosphate (IP1) accumulation was measured to examine its effects on inositol 1, 4, 5-trisphosphate (IP(3)) production during stimulation with ACh. RESULTS Amitriptyline inhibited the contractile responses to ACh, EFS, calyculin A, and SPC, with the concentrations of amitriptyline (mean +/- SD) required to exert 50% inhibition (IC(50)) being 4.3 +/- 1.3 microM, 3.2 +/- 1.6 microM, 256.4 +/- 106.4 microM, and 98.2 +/- 21.8 microM, respectively. In addition, amitriptyline (10 microM) eliminated the ACh (10 microM)-induced IP(1) accumulation. CONCLUSION The results suggest that amitriptyline does not influence tracheal smooth muscle reactivity at clinical concentrations (<1 microM), but attenuates the reactivity at supraclinical concentrations (> or =1 microM). The attenuated response to ACh brought about by amitriptyline is presumably due, at least in part, to the inhibition of phosphatidylinositol (PI) metabolism. The ability of amitriptyline to inhibit the calyculin Ainduced contraction suggests that amitriptyline also inhibits the Ca(2+)-calmodulin-myosin light chain pathway independently of the inhibition of PI metabolism. Finally, the difference between the IC(50) values for SPC-induced contraction and those for calyculin A-induced contraction suggests that amitriptyline may also inhibit the Rho-kinase pathway.
Collapse
|
15
|
Decreased noradrenergic and serotonergic reactivity of vas deferens of newborn rats from mothers treated with the serotonin reuptake inhibitor fluoxetine during pregnancy and breast-feeding. Life Sci 2007; 81:1501-8. [DOI: 10.1016/j.lfs.2007.09.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Revised: 09/05/2007] [Accepted: 09/10/2007] [Indexed: 11/20/2022]
|
16
|
de Jong TR, Pattij T, Veening JG, Dederen PJWC, Waldinger MD, Cools AR, Olivier B. Effects of chronic paroxetine pretreatment on (+/-)-8-hydroxy-2-(di-n-propyl-amino)tetralin induced c-fos expression following sexual behavior. Neuroscience 2005; 134:1351-61. [PMID: 16019152 DOI: 10.1016/j.neuroscience.2005.05.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2005] [Revised: 05/04/2005] [Accepted: 05/06/2005] [Indexed: 11/20/2022]
Abstract
Chronic treatment with the selective serotonin reuptake inhibitor paroxetine impairs the functioning of 5-HT(1A) receptors involved in ejaculation. This could underlie the development of delayed ejaculation often reported by men treated with paroxetine. The neurobiological substrate linking the effects of selective serotonin reuptake inhibitor-treatment and 5-HT(1A) receptor activation with ejaculation was investigated. Male Wistar rats that were pretreated with paroxetine (20 mg/kg/day p.o.) or vehicle for 22 days and had received an additional injection with the 5-HT(1A) receptor agonist 8-OH-DPAT ((+/-)-8-hydroxy-2-(di-n-propyl-amino)tetralin; 0.4 mg/kg s.c.) or saline on day 22, 30 min prior to a sexual behavior test, were perfused 1 h after the sexual behavior test. Brains were processed for Fos-, and oxytocin immunohistochemistry. The drug treatments markedly changed both sexual behavior and the pattern and number of Fos-immunoreactive cells in the brain. Chronic pretreatment with paroxetine caused delayed ejaculation. Acute injection with 8-OH-DPAT facilitated ejaculation in vehicle-pretreated rats, notably evident in a strongly reduced intromission frequency, whereas 8-OH-DPAT had no effects in paroxetine-pretreated rats. Chronic treatment with paroxetine reduced Fos-immunoreactivity in the locus coeruleus, and prevented the increase in Fos-immunoreactive neurons induced by 8-OH-DPAT in the oxytocinergic magnocellular part of the paraventricular nucleus as well as in the locus coeruleus. Since oxytocin and noradrenalin facilitate ejaculation, the alterations in Fos-IR in these areas could connect selective serotonin reuptake inhibitor treatment and 5-HT(1A) receptor activation to ejaculation. Chronic paroxetine treatment and 8-OH-DPAT changed c-fos expression in a number of other brain areas, indicating that Fos-immunohistochemistry is a useful tool to find locations where selective serotonin reuptake inhibitors and 8-OH-DPAT exert their effects.
Collapse
Affiliation(s)
- T R de Jong
- Department of Anatomy, Radboud University Nijmegen Medical Centre, The Netherlands.
| | | | | | | | | | | | | |
Collapse
|
17
|
Abdel-Hamid IA. Can smooth muscle represent a useful target for the treatment of rapid ejaculation? Drug Discov Today 2005; 10:1459-66. [PMID: 16243266 DOI: 10.1016/s1359-6446(05)03596-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Rapid ejaculation is probably the most common form of male sexual dysfunction. Current research into the treatment of the condition has focused on centrally acting or topical desensitizing agents; however, no treatment has yet been approved. An alternative approach could be to develop drugs that act directly upon the target organ itself and our increasing knowledge of the molecular biology of the accessory sex organs makes this a realistic possibility. This review analyzes the information in the literature that would support such a hypothesis. Particular emphasis has been placed on articles that have investigated smooth muscle cell relaxation. A critical review of the literature has revealed that there are potentially a myriad of targets through which rapid ejaculation can be treated.
Collapse
|
18
|
Hines RN, Adams J, Buck GM, Faber W, Holson JF, Jacobson SW, Keszler M, McMartin K, Segraves RT, Singer LT, Sipes IG, Williams PL. NTP-CERHR Expert Panel Report on the reproductive and developmental toxicity of fluoxetine. ACTA ACUST UNITED AC 2005; 71:193-280. [PMID: 15334524 DOI: 10.1002/bdrb.20014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
19
|
Siproudhis L, Dinasquet M, Sébille V, Reymann JM, Bellissant E. Differential effects of two types of antidepressants, amitriptyline and fluoxetine, on anorectal motility and visceral perception. Aliment Pharmacol Ther 2004; 20:689-95. [PMID: 15352918 DOI: 10.1111/j.1365-2036.2004.02151.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Although antidepressants are used for functional gastrointestinal disorders, the mechanisms of their effects on gut are incompletely understood. AIM To assess the effects of two types of antidepressants (tricyclic, serotoninergic) on anorectal motility and visceral perception. METHODS A placebo-controlled, randomized, double-blind, crossover study was performed in 12 healthy male volunteers who received a single oral dose of amitriptyline (80 mg), fluoxetine (40 mg) or placebo. Drug effects were assessed using phasic isobaric distensions of the rectum with an electronic barostat (11 levels from 1 to 51 mmHg) 4 h after drug intake. Maximal rectal volume and pressure, mean and residual pressures at upper anal canal, mean pressure at lower anal canal, defecation sensation (5-level scale) and visceral perception (visual analogue scale) were recorded at each level of distending pressure. RESULTS Ten subjects completed the study. Compared with placebo, neither amitriptyline nor fluoxetine modified rectal compliance or visceral perception. Compared with placebo, antidepressants significantly reduced mean and residual pressures at upper anal canal (-18%, P = 0.0019, and -27%, P = 0.0002, respectively, for amitriptyline; -26%, P = 0.0001, and -33%, P = 0.0001, respectively, for fluoxetine) whereas only amitriptyline significantly reduced mean pressure at lower anal canal (-16%, P = 0.0008). CONCLUSION Both antidepressants similarly relaxed the internal anal sphincter, probably through a non-specific mechanism, without modifying visceral perception. Only amitriptyline relaxed the external anal sphincter.
Collapse
Affiliation(s)
- L Siproudhis
- Service des Maladies de l'Appareil Digestif, CHU de Rennes et Université de Rennes 1, Hôpital de Pontchaillou, France.
| | | | | | | | | |
Collapse
|
20
|
Mousavizadeh K, Ghafourifar P, Sadeghi-Nejad H. Calcium channel blocking activity of thioridazine, clomipramine and fluoxetine in isolated rat vas deferens: a relative potency measurement study. J Urol 2002; 168:2716-9. [PMID: 12442016 DOI: 10.1016/s0022-5347(05)64250-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE We evaluated the calcium channel blocking activity of thioridazine, clomipramine and fluoxetine in isolated rat vas deferens and determined their relative order of potency. MATERIALS AND METHODS Cumulative control concentration-response curves to calcium chloride were obtained in isolated rat vas deferens incubated in depolarizing calcium-free Krebs-Henseleit solution. Tissues were washed to baseline length and equilibrated with a given concentration of test drugs. After a 30-minute period a calcium concentration-response curve was repeated. The resulting rightward displacement of the concentration-response curve to calcium provided a dose ratio. The dose ratio was used in the Schild equation and the antagonism of calcium induced contractions was quantified by Schild analysis. RESULTS The calcium channel blocking activity of thioridazine, clomipramine and fluoxetine was compared with nifedipine. All 4 drugs produced parallel rightward displacement of concentration-response curves to calcium. The potency of this effect was quantified by Schild analysis showing pA estimates, namely nifedipine 7, thioridazine 6.2, clomipramine 5.65 and fluoxetine 5. CONCLUSIONS A characteristic profile of calcium channel blocking activity on the vas deferens was obtained for all test drugs. The relative order of potency was determined as thioridazine greater than clomipramine greater than fluoxetine. Differences in the potency of calcium entry blockade at peripheral end organs may contribute to differential effects of these drugs on delaying ejaculatory latency in patients with premature ejaculation.
Collapse
|
21
|
Calcium Channel Blocking Activity of Thioridazine, Clomipramine and Fluoxetine in Isolated Rat Vas Deferens: A Relative Potency Measurement Study. J Urol 2002. [DOI: 10.1097/00005392-200212000-00108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
22
|
SEO KYUNGKEUN, KIM SAECHUL, LEE MOOYEOL. COMPARISON OF PERIPHERAL INHIBITORY EFFECTS OF CLOMIPRAMINE WITH SELECTIVE SEROTONIN RE-UPTAKE INHIBITORS ON CONTRACTION OF VAS DEFERENS: IN VITRO AND IN VIVO STUDIES. J Urol 2001. [DOI: 10.1016/s0022-5347(05)66303-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- KYUNG KEUN SEO
- From the Department of Urology and Physiology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - SAE CHUL KIM
- From the Department of Urology and Physiology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - MOO YEOL LEE
- From the Department of Urology and Physiology, College of Medicine, Chung-Ang University, Seoul, Korea
| |
Collapse
|
23
|
Seo KK, Kim SC, Lee MY. COMPARISON OF PERIPHERAL INHIBITORY EFFECTS OF CLOMIPRAMINE WITH SELECTIVE SEROTONIN RE-UPTAKE INHIBITORS ON CONTRACTION OF VAS DEFERENS:. J Urol 2001; 165:2110-4. [PMID: 11371937 DOI: 10.1097/00005392-200106000-00079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE We compared the peripheral inhibitory effects of the tricyclic antidepressant clomipramine with those of various selective serotonin re-uptake inhibitors on the contractile response of the vas deferens. MATERIALS AND METHODS The contractile responses of 17 circular smooth muscle strips of human vas deferens to 10-4 M. norepinephrine were observed in the absence and presence of clomipramine, and the selective serotonin re-uptake inhibitors fluoxetine, sertraline and paroxetine. The intraluminal pressure response of rat vas deferens to electrical stimulation of the hypogastric nerve was measured in 5 rats in the central plus peripheral effect group before and after the intravenous injection of 4.2 mg./kg. clomipramine or 8.3 mg./kg. sertraline. The pressure response to each agent was also observed after the transection of all proximal sympathetic input to the hypogastric nerve in 5 animals in the peripheral effect group. RESULTS Clomipramine was about 100-fold more potent than sertraline, fluoxetine or paroxetine for inhibiting the norepinephrine induced contraction of human vasal muscle strips. The inhibitory effect of sertraline on rat intravasal pressure in the peripheral effect group was significantly lower than in the central plus peripheral effect group (p <0.05), while no significant difference was noted in the 2 groups regarding clomipramine. The effect of clomipramine was significantly higher than that of sertraline in the central plus peripheral and peripheral effect groups (p <0.01). CONCLUSIONS Differences in potency of the peripheral inhibitory effects of the selective serotonin re-uptake inhibitors and clomipramine may contribute to their differential effects on delaying ejaculatory latency in patients with premature ejaculation.
Collapse
Affiliation(s)
- K K Seo
- Department of Urology and Physiology, College of Medicine, Chung-Ang University, Seoul, Korea
| | | | | |
Collapse
|