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Wu N, Chen JH, Wang T, Yang BB, Xing SY, Gao SZ, Ni DW, Du GJ, Song T, Han YF, Sun GH, Gao QQ, Xu CL, Dai YT. Altered brain activity associated with premature ejaculation improved by electroacupuncture in rats. Sex Med 2024; 12:qfae047. [PMID: 39220342 PMCID: PMC11365699 DOI: 10.1093/sexmed/qfae047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 06/27/2024] [Accepted: 07/31/2024] [Indexed: 09/04/2024] Open
Abstract
Background Premature ejaculation (PE) is linked with abnormal brain activity that is modifiable by electroacupuncture (EA). Aim In this study we aimed to explore the central pathological mechanism underlying EA in treating PE. Methods Six-week-old male Sprague-Dawley rats were divided into a PE group (n = 8) and a control group (n = 8) according to ejaculatory frequency during copulatory behavior. All rats underwent EA at the Zusanli acupoint (ST-36) for 4 weeks. Magnetic resonance imaging data were collected before and after EA. Outcomes The behavioral parameters, plasma norepinephrine levels, fractional amplitude of low frequency fluctuation (fALFF), and regional homogeneity (ReHo) were evaluated. Results The PE group ejaculated more times with shorter latency compared with controls. After EA, the ejaculation frequency of the PE group decreased, and the ejaculation latency period increased, with no changes observed in the control group. Norepinephrine levels were higher in the PE group than in the controls and were positively correlated with ejaculation frequency and negatively correlated with ejaculation latency. The PE group showed lower fALFF in the right striatum and higher ReHo in the brainstem compared with controls. After EA, controls showed decreased fALFF in the right striatum, left olfactory bulb, and dorsal fornix and increased ReHo in the right interpeduncular nucleus, as well as decreased ReHo in the left striatum, prelimbic system, right basal forebrain region, septal region, and olfactory bulb, while the model group exhibited increased fALFF in the right hypothalamic region, decreased fALFF in the left globus pallidum and right basal forebrain region and increased ReHo in the right interpeduncular nucleus, as well as decreased ReHo in the left striatum, olfactory bulb, basal forebrain region, dentate gyrus, right dysgranular insular cortex, and striatum. Compared with the controls after EA, the model group showed increased ReHo of the right hypothalamic region and decreased ReHo of the right dysgranular insular cortex. Clinical Implications These findings might enhance the understanding of PE and contribute to new, targeted therapies for PE. Strengths and Limitations The therapeutic effects might be achieved by EA inhibiting the activity in brain regions involved in ejaculatory behavior. However, the curative effect of acupuncture might be underestimated due to some curative effects of sham acupuncture used in the control group. Conclusion In conclusion, the ejaculatory frequency of rats may be reduced and ejaculation latency could be extended by EA at ST-36, which might be achieved by the effects of this treatment on brain activity.
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Affiliation(s)
- Ning Wu
- Department of Andrology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing 210008, China
- Department of Urology, The People’s Hospital of Jiaozuo, No. 263 Jiefang Middle Road, Jiaozuo 454002, China
| | - Jian-huai Chen
- Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Tong Wang
- Department of Andrology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing 210008, China
| | - Bai-bing Yang
- Department of Andrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Si-yan Xing
- Department of Andrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Song-zhan Gao
- Department of Andrology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Da-wei Ni
- Department of Andrology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing 210008, China
| | - Guang-jun Du
- Department of Andrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Tao Song
- Department of Andrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - You-feng Han
- Department of Andrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Guo-hai Sun
- Department of Andrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Qing-qiang Gao
- Department of Andrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Chun-lu Xu
- Department of Andrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Yu-tian Dai
- Department of Andrology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing 210008, China
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Britto-Júnior J, Uramoto EHS, Lima AT, Ribeiro LF, de Souza VB, Schenka AA, de Almeida Magalhães JC, Antunes E, Fregonesi A, De Nucci G. Epithelium-derived 6-nitrodopamine modulates noradrenaline-induced contractions in human seminal vesicles. Life Sci 2024; 348:122695. [PMID: 38710285 DOI: 10.1016/j.lfs.2024.122695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/18/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
AIMS To evaluate the basal release of 6-nitrodopamine (6-ND) from human isolated seminal vesicles (HISV) and to characterize its action and origin. MAIN METHODS Left HISV obtained from patients undergoing prostatectomy surgery was suspended in a 3-mL organ bath containing warmed (37 °C) and gassed (95%O2:5%CO2) Krebs-Henseleit's solution (KHS) with ascorbic acid. An aliquot of 2 mL of the supernatant was used to quantify catecholamines by LC-MS/MS. For functional studies, concentration-responses curves to catecholamines were obtained, and pEC50 and Emax values were calculated. Detection of tyrosine hydroxylase and S100 protein were also carried out by both immunohistochemistry and fluorescence in-situ hybridization assays (FISH). KEY FINDINGS Basal release of 6-ND was higher than the other catecholamines (14.76 ± 14.54, 4.99 ± 6.92, 3.72 ± 4.35 and 5.13 ± 5.76 nM for 6-ND, noradrenaline, adrenaline, and dopamine, respectively). In contrast to the other catecholamines, the basal release of 6-ND was not affected by the sodium current (Nav) channel inhibitor tetrodotoxin (1 μM; 10.4 ± 8.9 and 10.4 ± 7.9 nM, before and after tetrodotoxin, respectively). All the catecholamines produced concentration-dependent HISV contractions (pEC50 4.1 ± 0.2, 4.9 ± 0.3, 5.0 ± 0.3, and 3.9 ± 0.8 for 6-ND, noradrenaline, adrenaline, and dopamine, respectively), but 6-ND was 10-times less potent than noradrenaline and adrenaline. However, preincubation with very low concentration of 6-ND (10-8 M, 30 min) produced significant leftward shifts of the concentration-response curves to noradrenaline. Immunohistochemical and FISH assays identified tyrosine hydroxylase in tissue epithelium of HISV strips. SIGNIFICANCE Epithelium-derived 6-ND is the major catecholamine released from human isolated seminal vesicles and that modulates smooth muscle contractility by potentiating noradrenaline-induced contractions.
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Affiliation(s)
- José Britto-Júnior
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil.
| | | | - Antonio Tiago Lima
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Luiz Fernando Ribeiro
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil; Clinical Pharmacology Unit, Drug Research and Development Center, Federal University of Ceará (UFC), Fortaleza, Brazil
| | - Valéria Barbosa de Souza
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Andre Almeida Schenka
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil
| | | | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Adriano Fregonesi
- Department of Surgery, Faculty of Medicine of Jundiaí, Jundiaí, Brazil; Division of Urology, Department of Surgery, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Gilberto De Nucci
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil; Department of Surgery, Faculty of Medicine of Jundiaí, Jundiaí, Brazil; Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, Brazil
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Alhamam A, Garabed LR, Julian S, Flannigan R. The association of medications and supplements with human male reproductive health: a systematic review. Fertil Steril 2023; 120:1112-1137. [PMID: 37898470 DOI: 10.1016/j.fertnstert.2023.10.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 10/30/2023]
Abstract
Some medications used to treat comorbidities and conditions in reproductive-aged individuals could have a negative impact on fertility. This may occur through hormonal disruption, toxicity to germ cells and spermatozoa, functional impact on the sperm, teratogenicity potential, or ejaculatory abnormalities. Having knowledge of these potential interactions between medications and reproductive potential is important for clinicians to be aware of and guide the patient, along with their treating clinicians, to reproductively favorable alternatives when available. This review aims to summarize the state of the literature regarding medication interactions with human male reproduction using the Anatomical Therapeutic Chemical Classification System of medications.
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Affiliation(s)
- Abdullah Alhamam
- Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada; Department of Urology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Laurianne Rita Garabed
- Division of Urology, Department of Surgery, University of Montreal, Montreal, Quebec, Canada
| | - Sania Julian
- Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ryan Flannigan
- Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada; Department of Urology, Weill Cornell Medicine, New York, New York.
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Ejaculatory Duct Obstruction Affects Seminal Vesicle Contractile Efficacy and Smooth Muscle Ultrastructure in a Rat Model. Andrologia 2023. [DOI: 10.1155/2023/5022466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
The purpose of this study was to investigate the effects of ejaculatory duct obstruction (EDO) on contractile efficacy, smooth muscle ultrastructure, and α1A and M3 receptors of rat seminal vesicles (SVs). A total of 48 male rats, aged 14-15 weeks, were randomly divided into three groups, namely, the control, complete EDO, and partial EDO. SV tissues were collected at 4 and 8 weeks postoperatively for further experiments. Results revealed a marked reduction in SV contractile efficacy over time following obstruction in the complete EDO group. The contractile force and frequency decreased and increased in the partial EDO group at week 4, respectively, whereas contractile efficacy significantly reduced at week 8. Moreover, obstruction resulted in significant downregulation in expression of α1A and M3 proteins and mRNAs in rats from the complete EDO group over time. Rats in the partial EDO group initially exhibited an increase followed by a decrease. Analysis of the ultrastructure of SV smooth muscles confirmed the above changes. In conclusion, complete EDO can lead to a progressive decrease in contractile efficiency of SVs. On the other hand, partial EDO can first compensate for the contraction of SVs and gradually decompensate afterwards.
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Rahardjo HE, Ückert S, Kuczyk MA, Hedlund P. Expression and distribution of the transient receptor potential cationic channel ankyrin 1 (TRPA1) in the human seminal vesicles. Health Sci Rep 2023; 6:e987. [PMID: 36519080 PMCID: PMC9742597 DOI: 10.1002/hsr2.987] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 11/24/2022] [Accepted: 11/27/2022] [Indexed: 12/14/2022] Open
Abstract
Background and Aims The transient receptor potential cationic channel ankyrin 1 (TRPA1), a channel protein permeable to most divalent cations, has been suggested to play a role in mechano-afferent/efferent signaling (including the release of neurotransmitters) in the human urinary tract (bladder, prostate, and urethra). To date, only a few studies have addressed the expression of this receptor in male and female reproductive tissues. The present study aimed to evaluate human seminal vesicles (SVs) for the expression and localization of TRPA1. Methods SV tissue was obtained from 5 males who had undergone pelvic surgery due to malignancies of the prostate or urinary bladder. The expression of messenger ribonucleic acid (mRNA) specifically encoding for the TRPA1 protein was elucidated by means of reverse transcriptase polymerase chain reaction (RT-PCR). Using immunohistochemical methods, the distribution of TRPA1 was examined in relation to the endothelial and neuronal nitric oxide synthases (eNOS, nNOS) and the neuropeptides calcitonin gene-related peptide (CGRP) and vasoactive intestinal polypeptide (VIP). Results RT-PCR revealed signals related to the expected molecular size of 656 bp. Immunohistochemistry demonstrated that TRPA1 is located in nerves running through the smooth muscle portion of the SV. Here, the protein is in part co-localized with nNOS and CGRP, whereas no co-localization with VIP was registered. Dot-like signals specific for TRPA1 were observed in the cytoplasm of epithelial cells lining the lumen of glandular spaces. The epithelial layer also presented staining for eNOS. The smooth musculature appeared free of immunosignals for TRPA1. Conclusion The results convincingly show the expression of TRPA1 in nerve endings as well as in epithelial cells of the SV. Based on its location in epithelial cells, TRPA1 might be involved in the mechanism of the NO/cyclic guanosine monophosphate (GMP)-mediated signaling and also the control of secretory function (mediated by cyclic GMP) in the human SV.
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Affiliation(s)
- Harrina E. Rahardjo
- Department of Urology, Faculty of Medicine, Cipto Mangunkusumo HospitalUniversity of IndonesiaJakartaIndonesia
- Department of Urology & Urological Oncology, Hannover Medical SchoolDivision of SurgeryHannoverGermany
| | - Stefan Ückert
- Department of Urology & Urological Oncology, Hannover Medical SchoolDivision of SurgeryHannoverGermany
| | - Markus A. Kuczyk
- Department of Urology, Faculty of Medicine, Cipto Mangunkusumo HospitalUniversity of IndonesiaJakartaIndonesia
| | - Petter Hedlund
- Department of Clinical Pharmacology, Faculty of MedicineLinköping UniversityLinköpingSweden
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6
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Erdogan A, Keskin E, Sambel M, Mertoglu C. Assessing the nitric oxide and asymmetric dimethylarginine levels in lifelong premature ejaculation: A prospective study. Rev Int Androl 2022; 20:225-230. [DOI: 10.1016/j.androl.2021.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/15/2021] [Accepted: 02/14/2021] [Indexed: 10/16/2022]
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7
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Mucosa-Dependent, Stretch-Sensitive Spontaneous Activity in Seminal Vesicle. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019. [PMID: 31183829 DOI: 10.1007/978-981-13-5895-1_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register]
Abstract
Seminal vesicles (SVs), a pair of male accessory glands, contract upon sympathetic nerve excitation during ejaculation while developing spontaneous phasic constrictions in the inter-ejaculatory storage phase. Recently, the fundamental role of the mucosa in generating spontaneous activity in SV of the guinea pig has been revealed. Stretching the mucosa-intact but not mucosa-denuded SV smooth muscle evokes spontaneous phasic contractions arising from action potential firing triggered by electrical slow waves and associated Ca2+ flashes. These spontaneous events primarily depend on sarco-endoplasmic reticulum (SR/ER) Ca2+ handling linked with the opening of Ca2+-activated chloride channels (CaCCs) resulting in the generation of slow waves. Slow waves in mucosa-intact SV smooth muscle are abolished upon blockade of gap junctions, suggesting that seminal smooth muscle cells are driven by cells distributed in the mucosa. In the SV mucosal preparations dissected free from the smooth muscle layer, a population of cells located just beneath the epithelium develop spontaneous Ca2+ transients relying on SR/ER Ca2+ handling. In the lamina propria of the SV mucosa, vimentin-immunoreactive interstitial cells including platelet-derived growth factor receptor α (PDGFRα)-immunoreactive cells are distributed, while known pacemaker cells in other smooth muscle tissues, e.g. c-Kit-positive interstitial cells or α-smooth muscle actin-positive atypical smooth muscle cells, are absent. The spontaneously-active subepithelial cells appear to drive spontaneous activity in SV smooth muscle either by sending depolarizing signals or by releasing humoral substances. Interstitial cells in the lamina propria may act as intermediaries of signal transmission from the subepithelial cells to the smooth muscle cells.
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Drobnis EZ, Nangia AK. Cardiovascular/Pulmonary Medications and Male Reproduction. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1034:103-130. [PMID: 29256129 DOI: 10.1007/978-3-319-69535-8_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cardiovascular and respiratory medications are used by men of reproductive age although use of the former is most prevalent in advanced age. Many of these drugs have been associated with sexual dysfunction, including erectile and ejaculatory dysfunction, but for most there is insufficient evidence to link their use with testicular dysfunction, reduced semen quality or infertility. Some exceptions are the irreversible α1-adrenergic antagonist phenoxybenzamine, which carries a high risk of retrograde ejaculation; the specific α1A-adrenergic antagonists silodosin and tamsulosin, used primarily to treat BPH/lower urinary tract symptoms, which can cause retrograde ejaculation; and the peripheral β1-adrenergic antagonist atenolol, used to treat hypertension, which may decrease testosterone/free-testosterone levels. In this chapter, we review the evidence available regarding adverse reactions on male reproduction of adrenergic receptor agonists/antagonists, calcium channel blockers, angiotensin converting enzyme (ACE) inhibitors, diuretics, digoxin, and hydralazine. For some of these medications, there is some evidence for male reproductive effects, along with some solid work in experimental and companion animal species suggesting negative effects. In contrast, and of special note, are calcium channel blockers, which have long been included on lists of medications with the potential to cause male infertility. This turns out to be a good example of a substance with profound effects on sperm function in vitro, but with limited evidence for in vivo effects on semen quality or fertility, even in experimental species. We hope that the evidence provided in this chapter will stimulate additional studies for these important classes of medications.
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Affiliation(s)
- Erma Z Drobnis
- Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO, USA
| | - Ajay K Nangia
- Department of Urology, University of Kansas Medical Center, Kansas City, KS, USA
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9
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Xia JD, Chen J, Sun HJ, Zhou LH, Zhu GQ, Chen Y, Dai YT. Centrally mediated ejaculatory response via sympathetic outflow in rats: role of N-methyl-D-aspartic acid receptors in paraventricular nucleus. Andrology 2016; 5:153-159. [PMID: 27860425 DOI: 10.1111/andr.12274] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 07/03/2016] [Accepted: 07/19/2016] [Indexed: 11/29/2022]
Affiliation(s)
- J.-D. Xia
- Department of Urology; The First Affiliated Hospital of Nanjing Medical University; Nanjing China
| | - J. Chen
- Department of Obstetrics and Gynecology; Nanjing Drum Tower Hospital; Nanjing Medical University; Nanjing China
| | - H.-J. Sun
- Key Laboratory of Cardiovascular Disease and Molecular Intervention; Department of Physiology; Nanjing Medical University; Nanjing China
| | - L.-H. Zhou
- Department of Urology; The First Affiliated Hospital of Nanjing Medical University; Nanjing China
| | - G.-Q. Zhu
- Key Laboratory of Cardiovascular Disease and Molecular Intervention; Department of Physiology; Nanjing Medical University; Nanjing China
| | - Y. Chen
- Department of Andrology; Nanjing Drum Tower Hospital; Nanjing Medical University; Nanjing China
| | - Y.-T. Dai
- Department of Andrology; Nanjing Drum Tower Hospital; Nanjing Medical University; Nanjing China
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Kadihasanoglu M, Kilciler M, Kilciler G, Yucetas U, Erkan E, Karabay E, Toktas MG, Kendirci M. Relation between blood vitamin B12 levels with premature ejaculation: case-control study. Andrologia 2016; 49. [PMID: 27681841 DOI: 10.1111/and.12657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2016] [Indexed: 11/28/2022] Open
Abstract
The aim of this study was to investigate whether vitamin B12 levels are associated with premature ejaculation (PE). A total of 109 subjects (56 PE and 53 controls) were included in this study. PE was defined as self-reported intravaginal ejaculatory latency time (IELT) based on the Diagnostic and Statistical Manual of Mental Disorders IV criteria and those who had had an IELT of <2 min was considered as PE. All participants were evaluated using premature ejaculation diagnostic tool (PEDT), International Index of Erectile Function (IIEF) and Beck Depression Inventory (BDI). The vitamin 12 levels were measured in all subjects. The mean age between the PE and controls was comparable (p = .084). Mean IIEF and BDI scores between the two groups did not statistically differ. The mean IELT values in the PE group were significantly lower than in the control group (p < .0001). PE patients reported significantly lower vitamin B12 levels compared with the controls (213.14 vs. 265.89 ng ml-1 ; p < .001). The ROC analysis showed a significant correlation between the diagnosis of PE and lower vitamin B12 levels. This study has demonstrated that lower vitamin B12 levels are associated with the presence of PE. This work also shows a strong correlation between vitamin B12 levels and the PEDT scores as well as the IELT values.
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Affiliation(s)
- M Kadihasanoglu
- Department of Urology, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - M Kilciler
- Department of Urology, Bahcesehir University, Faculty of Medicine, Medical Park Bursa Hospital, Bursa, Turkey
| | - G Kilciler
- Gulhane Askeri Tıp Akademisi, Gastroenteroloji Bilim Dalı, Ankara, Turkey
| | - U Yucetas
- Department of Urology, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - E Erkan
- Department of Urology, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - E Karabay
- Department of Urology, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - M G Toktas
- Department of Urology, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - M Kendirci
- Department of Urology, Istinye University, Faculty of Medicine, Liv Hospital Ulus, Istanbul, Turkey
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Simões Paço J, Jorge Pereira B. New Therapeutic Perspectives in Premature Ejaculation. Urology 2016; 88:87-92. [DOI: 10.1016/j.urology.2015.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 09/29/2015] [Accepted: 11/01/2015] [Indexed: 01/11/2023]
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12
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Yan WJ, Yu N, Yin TL, Zou YJ, Yang J. A new potential risk factor in patients with erectile dysfunction and premature ejaculation: folate deficiency. Asian J Androl 2015; 16:902-6. [PMID: 25080932 PMCID: PMC4236337 DOI: 10.4103/1008-682x.135981] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We investigated serum folic acid (FA) levels in patients with erectile dysfunction (ED) and/or premature ejaculation (PE). Fasting serum samples were obtained from 42 patients with ED, 36 with PE, 25 ED patients with PE, and 30 healthy men; the mean intravaginal ejaculation latency time (IELT) was measured during a 4 weeks baseline period. Levels of sex hormones (follicle-stimulating hormone, luteinizing hormone, total testosterone), homocysteine (Hcys), and FA were measured using chemiluminescent immunoassays. The sexual functions of PE patients and normal control men were evaluated using the Chinese Index of Premature Ejaculation (CIPE). The abridged International Index of Erectile Function-5 (IIEF-5) questionnaire was used to gauge erectile quality for ED patients and for normal controls. Serum FA concentrations were lower in ED (7.61 ± 3.97 ng ml−1), PE (9.37 ± 3.40 ng ml−1), and ED/PE (8.84 ± 4.28 ng ml−1) patients than in healthy men (12.23 ± 5.76 ng ml−1, P < 0.05). No significant differences in sex hormone levels were found between patients with sexual dysfunction and healthy controls (P > 0.05). There were positive correlations between serum FA concentrations and CIPE scores (r = 0.530, P < 0.01), IIEF-5 scores (r = 0.589, P < 0.01), and IELT (r = 0.445, P < 0.01); negative correlations with Hcys concentrations (r = −0.487, P < 0.01) were found in all participants. These findings showed a strong relationship between serum FA levels and sexual dysfunction, possibly due to an effect of FA on the metabolism of nitric oxide, Hcys, and 5-hydroxytryptamine.
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Affiliation(s)
| | | | | | | | - Jing Yang
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
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13
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Wong P, Cheung M, WS O, Tang F. Intermedin inhibits norepinephrine-induced contraction of rat seminal vesicle. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2014. [DOI: 10.1016/s2305-0500(14)60022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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14
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Hsieh JT, Kuo YC, Chang HC, Liu SP, Chen JH, Tsai VFS. The role of sympathetic and parasympathetic nerve systems on the smooth muscle of rat seminal vesicles - experimental results and speculation for physiological implication on ejaculation. Andrology 2013; 2:59-64. [PMID: 24166981 DOI: 10.1111/j.2047-2927.2013.00146.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 08/29/2013] [Accepted: 09/18/2013] [Indexed: 01/23/2023]
Abstract
Ejaculation is a process involving sympathetic and parasympathetic effects during different stages - emission and ejection. Some conditions of ejaculation dysfunction are associated with autonomic nerves. However, the exact effects of autonomic nerves on ejaculation are not well defined. Autonomic agonists induce different recorded trace patterns of seminal vesicular contraction. The different traces contain different components of phasic and tonic contraction, which may have physiological implications. In this study, we examined isolated rat seminal vesicle (SV) contraction by phenylephrine (PE), acetylcholine, and their respective antagonists and then speculated upon physiological roles of sympathetic and parasympathetic nerves on SV during ejaculation. We found that PE and Ach both achieved good contraction of rat SV. Compared to α1b for sympathetic and M1, M2 for parasympathetic receptors, α1a and M3 are the relatively dominant subtypes on rat SV. Adrenergic and cholinergic agonists cause different trace patterns of SV contraction. We speculated that the sympathetic effect is dominant during emission to squeeze seminal fluid out and that the parasympathetic effect is dominant during ejection to provide an anti-reflux effect on the ejaculatory duct.
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Affiliation(s)
- J-T Hsieh
- Urology, National Taiwan University, Taipei, Taiwan
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15
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Liao SB, O WS, Tang F. Adrenomedullin Inhibits Norepinephrine-induced Contraction of Rat Seminal Vesicle. Urology 2012; 80:224.e1-5. [DOI: 10.1016/j.urology.2012.03.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 03/20/2012] [Accepted: 03/29/2012] [Indexed: 10/28/2022]
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16
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de Almeida Kiguti LR, Pupo AS. Investigation of the Effects of α1‐Adrenoceptor Antagonism and L‐Type Calcium Channel Blockade on Ejaculation and Vas Deferens and Seminal Vesicle Contractility In Vitro. J Sex Med 2012; 9:159-68. [DOI: 10.1111/j.1743-6109.2011.02410.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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17
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The Activation of Peripheral 5-HT1A Receptors Can Inhibit Seminal Vesicle Contraction: An In Vivo Animal Study. Urology 2011; 78:376-9. [DOI: 10.1016/j.urology.2011.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 03/26/2011] [Accepted: 04/04/2011] [Indexed: 11/21/2022]
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