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Corpus cavernosum

Mariam El Assar, Argentina Fernández, Alberto Sánchez-Ferrer, Javier Angulo, Leocadio Rodríguez-Mañas
Aging induces vascular dysfunction, representing the major risk factor for cardiovascular disease. Our aim was to ascertain specific vulnerability of vascular territories to aging by evaluating the progressive impact of aging on vascular function in four different vascular beds: aorta, mesenteric artery (MA), coronary artery (CA), and penile corpus cavernosum (CC) from 3, 6, 9, 12, 20 or 24 months-old male rats. Contractile/relaxant responses were evaluated in organ chambers (A/CC) and wire myographs (MA/CA)...
March 29, 2018: Mechanisms of Ageing and Development
J Yang, Y Zhang, G Zang, T Wang, Z Yu, S Wang, Z Tang, J Liu
Adipose-derived stem cells (ADSCs) have recently been considered as a promising therapy for erectile dysfunction (ED). However, the mechanism of ADSC-based therapy is unclear. Insulin-like growth factor-1 (IGF-1), basic fibroblast growth factor (bFGF), and vascular endothelial growth factor (VEGF) secreted by ADSCs were assessed in vitro. Sixteen 24-month-old male Sprague-Dawley rats were used for comparative analysis of 2-week treatment with labeled ADSCs or PBS. Eight additional 5-month-old rats were used as a young rat group...
March 30, 2018: Andrology
Pan Liu, Jun Jiang, Jiyi Xia, Rui Jiang
OBJECTIVE: To determine whether low androgen status impacts erectile function by regulating the expression of the G protein-coupled P2Y receptors (P2Y1, P2Y2, P2Y4, and P2Y6) in the corpus cavernosum penis of rats. METHODS: A total of 36 healthy, 8-week-old, male Sprague-Dawley (SD) rats were randomly allocated into 6 groups: 4 weeks of androgen replacement therapy post castration (group A); 4 weeks post castration (group B); 4 weeks post sham operation (group C); 8 weeks of androgen replacement therapy post castration (group D); 8 weeks post castration (group E); and 8 weeks post sham operation (group F)...
March 26, 2018: Urology
P Shahin, H E Rahardjo, A Bannowsky, D Tsikas, M Sohn, M A Kuczyk, S Ückert
Peptides, such as C-type natriuretic peptide (CNP), vasoactive intestinal polypeptide (VIP) and endothelin 1 (ET-1), are involved in the control of penile erectile tissue (corpus cavernosum = CC). Inhibiting the degradation of CNP and VIP or conversion of Big ET-1 into ET-1 by endopeptidase enzymes should result in an enhancement of CC smooth muscle relaxation. Using the tissue bath technique, responses of isolated CC, challenged by noradrenaline (NA, 1 μm), to increasing concentrations of the endopeptidase inhibitor KC 12615 (1 nm - 10 μm), CNP and VIP (0...
March 25, 2018: Andrologia
Yajun Ruan, Jun Zhou, Ning Kang, Amanda B Reed-Maldonado, Arianna Tamaddon, Bohan Wang, Hsun Shuan Wang, Guifang Wang, Lia Banie, Guiting Lin, Jihong Liu, Tom F Lue
OBJECTIVES: To investigate the feasibility of Zucker fatty rats as a model for obesity-associated erectile dysfunction (OAED) research and to determine the effect of low intensity extracorporeal shock wave therapy (Li-ESWT) on penile tissue and function in these rats. MATERIALS AND METHODS: Eight newborn male Zucker Lean (ZL group) rats (ZUC-Leprfa 186) and 16 newborn male Zucker Fatty (ZF) rats (ZUC-Leprfa 185) were injected with 5-ethynyl-2'-deoxyuridine (EdU) at birth to identify and monitor endogenous stem cells...
March 23, 2018: BJU International
Emmanuel Weyne, Johanna L Hannan, Thomas Gevaert, Yodi Soebadi, Hotaka Matsui, Fabio Castiglione, Koenraad van Renterghem, Dirk De Ridder, Frank Van der Aa, Trinity J Bivalacqua, Maarten Albersen
BACKGROUND: Previously, we found that the neuropeptide galanin was strongly upregulated soon after bilateral cavernous nerve injury (BCNI) and that galanin and its receptors were expressed in nitrergic erectile innervation. Galanin has been observed to exert neuroregenerative effects in dorsal root ganglion neurons, but evidence for these effects in the major pelvic ganglion (MPG) after BCNI is lacking. AIM: To evaluate the neurotropic effects of galanin receptor agonists and antagonists in vitro in nitrergic neurons and MPG and in vivo in rats after BCNI...
March 14, 2018: Journal of Sexual Medicine
Brian M Blair, Fernandino Vilson, Neil J Kocher, Edward Kloniecke, Joseph Y Clark
Fracture of the penis is a well-recognized yet relatively uncommon urologic event. Forceful, blunt trauma with lateral bending of the penis in an erect state typically results in a transverse rupture of the tunica albuginea of the corpus cavernosum. Longitudinal tears of the corpus cavernosum are by themselves considered infrequent. We present a rare case of a patient with longitudinal rupture of the distal corpus cavernosum with concomitant extension to the corpus spongiosum causing partial urethral disruption as a result of trauma during sexual intercourse...
March 13, 2018: Urology
Tatiana Bagrichevsky Autran, Alessandro Severo Alves de Melo, Fabio Noro, Bernardo Tessarollo, Márcio Miguez
No abstract text is available yet for this article.
January 2018: Radiologia Brasileira
E Moya-Sánchez, A Medina-Benítez, V Medina-Salas, L Fernández-Navarro
Partial segmental thrombosis of the corpus cavernosum is an unusual clinical condition of unknown origin that mainly affects young males, whose characteristic presentation is the appearance of unexplained perineal pain associated with a palpable perineal mass. This entity consists of thrombosis in the perineal portion of the corpus cavernosum, usually unilateral and it is associated with underlying malignant pathologies and predisposing factors such as microtrauma. After the adequate adherence to conservative treatment, the appearance of complications such as erectile dysfunction is very uncommon...
March 5, 2018: Radiología
F Z Gonçalves, F S Lizarte Neto, P C Novais, D Gattas, L G Lourenço, C A M de Carvalho, D P C Tirapelli, C A F Molina, L F Tirapelli, S Tucci
Recent evidence shows that chronic ethanol consumption increases endothelin (ET)-1 induced sustained contraction of trabecular smooth muscle cells of the corpora cavernosa in corpus cavernosum of rats by a mechanism that involves increased expression of ETA and ETB receptors. Our goal was to evaluate the effects of alcohol and diabetes and their relationship to miRNA-155, miRNA-199 and endothelin receptors in the corpus cavernosum and blood of rats submitted to the experimental model of diabetes mellitus and chronic alcoholism...
March 1, 2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Zhi-Hua Wan, Guo-Hao Li, Yong-Lian Guo, Wen-Zhou Li, Lin Chen, Yuan-Jie Zhang
BACKGROUND: Cavernous nerve injury (CNI) causes fibrosis and loss of smooth muscle cells (SMCs) in the corpus cavernosum and leads to erectile dysfunction, and lysyl oxidase (LOX) activation has been found to play an important role in fibrotic diseases. AIM: To evaluate the role of LOX in penile fibrosis after bilateral CNI (BCNI). METHODS: Rats underwent BCNI or a sham operation and were treated with vehicle or β-aminopropionitrile, a specific LOX activity inhibitor...
March 2018: Journal of Sexual Medicine
Jia-Feng Fang, Xu-Na Huang, Xiao-Yan Han, Xi Ouyang, Lei Fan, Xin Zhao, Ze-Hong Chen, Hong-Bo Wei
BACKGROUND: Whether combined transplantation of mesenchymal stem cells (MSCs) and endothelial progenitor cells (EPCs) is more effective than transplantation of a single cell type in the restoration of erectile function is unknown. AIM: To investigate the effect of combined transplantation of MSCs and EPCs on restoration of erectile function in rats with cavernous nerve injury (CNI). METHODS: MSCs were isolated from human bone marrow and EPCs were isolated from human umbilical cord blood...
March 2018: Journal of Sexual Medicine
Manuela T Comelis, Larissa M Bueno, Rejane M Góes, S R Taboga, Eliana Morielle-Versute
The penis is the reproductive organ that ensures efficient copulation and success of internal fertilization in all species of mammals, with special challenges for bats, where copulation can occur during flight. Comparative anatomical analyses of different species of bats can contribute to a better understanding of morphological diversity of this organ, concerning organization and function. In this study, we describe the external morphology and histomorphology of the penis and baculum in eleven species of molossid bats...
January 31, 2018: Zoology: Analysis of Complex Systems, ZACS
Rodrigo Barros, Gabriel Lacerda, Alex Schul, Paulo Ornellas, Leandro Koifman, Luciano A Favorito
OBJECTIVES: Evaluate the demographic data, etiology, operative findings and results of surgical treatment of penile fracture (PF) in men who have sex with men(MSM) with emphasis on sexual complications. MATERIALS AND METHODS: We studied 216 patients underwent surgical correction of PF at our hospital. Patients self-identified as MSM were followed for at least 6 months. Demographic data, presentation, operative findings, International Index of Erection Function - 5 (IIEF-5) and the Premature Ejaculation Diagnostic Tool...
March 1, 2018: International Braz J Urol: Official Journal of the Brazilian Society of Urology
Shankun Zhao, Ran Kang, Tuo Deng, Lianmin Luo, Jiamin Wang, Ermao Li, Jintai Luo, Luhao Liu, ShawPong Wan, Zhigang Zhao
Intracavernous pressure (ICP) measurement is a well-established technique for assessing the erectile function, which was performed by cannulating either crus or shaft of the penis. However, there are no studies concerning the experimental performance of the two cannulation sites yet. The aim of this study was to compare the measuring outcomes using two different cannulation sites. To validate the capacity of our study, both normal and the castration-induced erectile dysfunction rat models were conducted. Fifty adult male Sprague-Dawley rats were randomized equally into two groups: an intact group and a castration group...
2018: PloS One
T A Ludwig, R Dahlem
Artificial urinary sphincters and penile corpus cavernosum prostheses are effective for patients who are not adequately treated by conservative treatment or pharmacotherapy. Both of these devices show good results concerning functional outcome if used within the correct patient selection. Penile prostheses are meant to be the last line of treatment for severe erectile dysfunction after failure of conventional treatment. Artificial urinary sphincters are the treatment of choice for severe urinary stress incontinence...
February 7, 2018: Der Urologe. Ausg. A
Rustu Turkay, Ercan Inci, Mustafa Gurkan Yenice, Volkan Tugcu
Introduction: Erectile dysfunction (ED) is a common health problem among males, and radiology has limited use in its diagnosis and treatment. Shear wave elastography (SWE) is a new sonographic technique. In this study, we examined the significance of SWE in the diagnosis of ED. Methods: The study included a total number of 70 participants. The mean age of the participants was 54.14 ± 8.03 years (range: 39 and 71 years old). We composed two groups. Group 1 had 35 patients who presented to the urology clinic in our hospital complaining of ED, and had a score of 17 or lower from the International Index of Erectile Function (IIEF) questionnaire...
August 2017: Ultrasound: Journal of the British Medical Ultrasound Society
Ying Zhang, Linpei Jia, Ying Zhang, Wei Ji, Hai Li
BACKGROUND/AIMS: We aim to explore the role of angiotensin (Ang)II and the RhoA/Rho kinase signaling pathway in the pathogenesis of erectile dysfunction in diabetes mellitus (DM). METHODS: Male Sprague-Dawley (SD) rats were used for experiments and short hairpin RNA (shRNA) was used to silence the AngII gene. The erectile function of rats was observed and intracavernous pressure and mean arterial pressure (ICP/MAP) were measured after electrical stimulation. Relaxation and contraction of smooth muscle in the corpus cavernosum were tested...
2018: Cellular Physiology and Biochemistry
Shakiru Ademola Salami, Hussein Mofomosara Salahdeen, Evangelshane Chukwudubem Ugbebor, Babatunde Adekunle Murtala, Yinusa Raji
OBJECTIVE: This study investigated the effects of aqueous leaf extract of Tridax procumbens (ALETP) on contractile activity of corpus cavernosum in N-nitro-l-arginine methyl ester (l-NAME)-induced hypertensive male rats. METHODS: Twenty normal, adult male rats (130-150 g) were divided into four groups of five rats each. Group I (control) was given normal saline (0.6 mL/kg) and group II was given l-NAME (40 mg/kg) for 6 weeks. Groups III and IV also received l-NAME (40 mg/kg) for 6 weeks but were further co-treated with 100 and 200 mg/kg of ALETP, respectively, from week 4 to week 6...
January 2018: Journal of Integrative Medicine
Graziele Halmenschlager, Ernani Luis Rhoden, Gabriela Almeida Motta, Lucas Sagrillo Fagundes, Jorge Luiz Medeiros, Rosalva Meurer, Cláudia Ramos Rhoden
Objective: To evaluate the effects of testosterone (T) on the maintenance of corpus cavernosum (CC) structure and apoptosis. Methods: Animals were divided into three groups: sham operation group (n = 8) underwent sham operation; Orchiectomized (Orchiec)+ oily vehicle group (n = 8) underwent bilateral orchiectomy and received a single dose of oily vehicle by intramuscular injection (i.m.) 30 days after orchiectomy; and Orchiec + T group (n = 8) underwent bilateral orchiectomy and received a single dose of T undecanoate 100 mg/kg i...
October 2017: Asian Journal of Urology
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