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Corpus cavernosum

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https://www.readbyqxmd.com/read/27904147/penile-constitutive-nitric-oxide-synthase-expression-in-rats-exposed-to-unpredictable-chronic-mild-stress-role-of-inflammation
#1
T D Şahin, Y Yazır, T Utkan, S S Göçmez, D Bayramgürler
Chronic psychological stress cause erectile dysfunction (ED). Considering recent evidence that tumor necrosis factor-α (TNF-α) levels are increased in serum of patients with ED, the present study investigated the effects of infliximab (a TNF-α blocker) on endothelial nitric oxide synthase (eNOS) and neuronal NOS (nNOS) immunoreactivity of rat penile corpus cavernosum in unpredictable chronic mild stress (UCMS). Male adult rats were randomly divided into three groups (n=8 per group): Control, UCMS and UCMS+infliximab...
December 1, 2016: International Journal of Impotence Research
https://www.readbyqxmd.com/read/27889116/total-phallic-reconstruction-using-radial-forearm-free-flap-after-iatrogenic-penile-amputation
#2
J C Angulo, I Arance, C Gómez-Llorens, C Esquinas, C Gómez-Martín, J L Fernández-Cañamaque
INTRODUCTION: The iatrogenic loss of the penis is a rare situation. We present a challenging case of deferred total penile reconstruction in a genetic male. MATERIAL AND METHODS: A 57-year-old man with the loss of the penis due to a penile abscess and necrosis secondary to penile curvature surgery. The reconstruction was performed over several operations using a radial forearm free flap (RFFF) and placement of a customised inflatable prosthesis a year later. RESULTS: During the first operation, the penile abscess was drained, the necrotic residues were debrided and placement of hypogastric drainage...
November 23, 2016: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/27879305/partial-segmental-thrombosis-of-the-corpus-cavernosum-presenting-with-perineal-pain
#3
Michelle Christodoulidou, Arie Parnham, Navin Ramachandran, Asif Muneer
We describe the case of a man aged 43 years who presented with a 2-week history of a palpable lump in the right proximal penile shaft. This was preceded by a 6-month history of perineal pain, accompanied by erectile dysfunction. An urgent MRI scan of his penis identified a thrombus within the right crus and corpus of the penis. His thrombophilia screen was normal. The patient was started on oral anticoagulation and a phosphodiesterase inhibitor (PDE-5i) to prevent thrombus progression and maintain erectile function...
November 22, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27864032/%C3%AE-1a-adrenergic-receptor-antagonism-improves-erectile-and-cavernosal-responses-in-rats-with-cavernous-nerve-injury-and-enhances-neurogenic-responses-in-human-corpus-cavernosum-from-patients-with%C3%A2-erectile-dysfunction-secondary-to-radical-prostatectomy
#4
Juan I Martínez-Salamanca, José M La Fuente, Eduardo Martínez-Salamanca, Argentina Fernández, Augusto J Pepe-Cardoso, Nuno Louro, Joaquín Carballido, Javier Angulo
INTRODUCTION: Cavernous nerve injury (CNI) in rats and radical prostatectomy (RP) in men result in loss of nitrergic function and increased adrenergic-neurogenic contractions of cavernosal tissue. AIM: To evaluate the modulation of the α-adrenergic system as a strategy to relieve erectile dysfunction (ED) and functional cavernosal alterations induced by CNI. METHODS: A non-selective α-blocker (phentolamine 1 mg/kg daily), a selective α1A-blocker (silodosin [SILOD] 0...
November 15, 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27849481/brief-report-systemic-vascular-access-and-resuscitation-via-corpus-cavernosum
#5
Melville Bradley
BACKGROUND: Pre-hospital systemic vascular access with early resuscitation in the hypovolemic trauma patient can be problematic and is attempted through venous cut-downs, peripheral IV lines, and/or interosseous routes. This brief report examines an alternative for males via the corpus cavernosum (CC). METHODS: A systematic literature review using certain inclusion criteria including, but not limited to, corpus cavernosum access and resuscitation was conducted and a summary table created...
November 2016: Military Medicine
https://www.readbyqxmd.com/read/27843866/penile-manipulation-the-most-common-etiology-of-penile-fracture-at-our-tertiary-care-center
#6
Md Jawaid Rahman, M S Faridi, Naloh Mibang, Rajendra Sinam Singh
Penile fracture is the disruption of the tunica albuginea with rupture of the corpus cavernosum secondary to blunt trauma to the erect penis. It is an unusual condition, usually underreported. According to the published literature, vigorous vaginal intercourse with women on top position is the most common etiology across the globe including India with Middle Eastern countries being the exception. A total of seven patients of penile fracture presented in emergency in the last 6 months. The etiology was penile manipulation at the time of sexual excitement in six out of seven patients of penile fracture, which was contrary to the literature published except in Middle Eastern countries...
April 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/27785815/characterisation-of-pomegranate-juice-effects-on-human-corpus-cavernosum
#7
S Gur, B M Rezk, Z Y Abd Elmageed, P J Kadowitz, S C Sikka, W J G Hellstrom
Pomegranate (POM) juice may benefit the erectile process, but the scientific evidence is lacking. This study evaluates the molecular characterisation and confirmation of POM's action on human corpus cavernosum (HCC) obtained from patients (n = 16) undergoing penile prosthesis implantation. After phenylephrine contraction, the relaxant effects of POM with various inhibitors in the presence and absence of palmitic acid (PA)-induced acute oxidative stress were investigated. Electrical field stimulation (EFS)- and acetylcholine (ACh)-induced relaxation were performed using organ bath preparation...
October 26, 2016: Andrologia
https://www.readbyqxmd.com/read/27763717/additive-effects-of-the-rho-kinase-inhibitor-y-27632-and-vardenafil-on-relaxation-of-the-corpus-cavernosum-tissue-of-patients-with-erectile-dysfunction-and-clinical-phosphodiesterase-type-5-inhibitor-failure
#8
Pieter Uvin, Maarten Albersen, Ine Bollen, Maarten Falter, Emmanuel Weyne, Loes Linsen, Hanna Tinel, Peter Sandner, Trinity J Bivalacqua, Dirk J M K De Ridder, Frank Van der Aa, Bert Brône, Koenraad Van Renterghem
OBJECTIVES: To evaluate the expression of the Rho/Rho-associated protein kinase (ROCK) pathway in the corpus cavernosum of patients with severe erectile dysfunction (ED) compared with healthy human corpus cavernosum, and to test the functional effects of two Rho kinase inhibitors (RKIs) on erectile tissue of patients with severe ED, which did not respond to phosphodiesterase type 5 inhibitors (PDE5Is). PATIENTS AND METHODS: Human corpus cavernosum samples were obtained after consent from men undergoing penile prosthesis implantation (n = 7 for organ bath experiments, n = 17 for quantitative PCR [qPCR])...
October 20, 2016: BJU International
https://www.readbyqxmd.com/read/27711101/non-sex-related-subtotal-rupture-of-the-corpus-cavernosum-without-urethral-injury-a-case-report-and-literature-review
#9
Zeki Bayraktar, Selami Albayrak
Although penile fracture is a rare case, it is a well-described urologic emergency. It results from the rupture of the tunica albuginea of corpora cavernosa by blunt strain that commonly mandates immediate surgical exploration. Urethral injury may also accompany penile fracture. An ideal anamnesis and a special physical examination were determinant to achieve a correct diagnosis. It is usually diagnosed based on clinical examination, but ultrasonography can be very helpful in diagnosis. The treatment is based on the presence of associated urethral injury...
October 5, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/27681254/differentially-expressed-micrornas-in-the-corpus-cavernosum-from-a-murine-model-with-type-2-diabetes-mellitus-associated-erectile-dysfunction
#10
Feng Pan, Jinwei You, Yuan Liu, Xuefeng Qiu, Wen Yu, Jiehua Ma, Lianjun Pan, Aixia Zhang, Qipeng Zhang
To better understand the molecular aetiology of type 2 diabetes mellitus-associated erectile dysfunction (T2DMED) and to provide candidates for further study of its diagnosis and treatment, this study was designed to investigate differentially expressed microRNAs (miRNAs) in the corpus cavernosum (CC) of mice with T2DMED using GeneChip array techniques (Affymetrix miRNA 4.0 Array) and to predict target genes and signalling pathways regulated by these miRNAs based on bioinformatic analysis using TargetScan, the DAIAN web platform and DAVID...
September 28, 2016: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/27678468/reduced-corporal-fibrosis-to-protect-erectile-function-by-inhibiting-the-rho-kinase-lim-kinase-cofilin-pathway-in-the-aged-transgenic-rat-harboring-human-tissue-kallikrein-1
#11
Kai Cui, Yang Luan, Tao Wang, Li Zhuan, Ke Rao, Shao-Gang Wang, Zhang-Qun Ye, Ji-Hong Liu, Dao-Wen Wang
Our previous studies have demonstrated that erectile function was preserved in aged transgenic rats (TGR) harboring the human tissue kallikrein 1 (hKLK1), while the molecular level of hKLK1 on corporal fibrosis to inhibit age-related erectile dysfunction (ED) is poorly understood. Male wild-type Sprague-Dawley rats (WTR) and TGR harboring the hKLK1 gene were fed to 4- or 18-month-old and divided into three groups: young WTR (yWTR) as the control, aged WTR (aWTR), and aged TGR (aTGR). Erectile function of all rats was assessed by cavernous nerve electrostimulation method...
September 27, 2016: Asian Journal of Andrology
https://www.readbyqxmd.com/read/27635160/the-role-of-ultrasonography-in-the-diagnosis-and-management-of-penile-trauma
#12
Lucio Dell'Atti
PURPOSE: In this prospective study, we studied the role of ultrasonography (US) in the diagnosis and management of penile trauma. METHODS: Between 2007 and 2014, 14 patients (mean age 39 years) with suspected penile fracture underwent US examinations. Almost all patients had a history of injury during sexual intercourse or manipulation of the penis. US examinations were performed in transversal and longitudinal planes starting at the level of the glans and moving down to the base of the penis...
September 2016: Journal of Ultrasound
https://www.readbyqxmd.com/read/27624510/phosphodiesterase-5-inhibitor-use-an-under-reported-cause-of%C3%A2-profuse-nasal-bleeding
#13
Petros V Vlastarakos, Thomas P Nikolopoulos
BACKGROUND: Phosphodiesterase-5 (PDE-5) inhibitors enhance penile erection and have gained popularity not only for erectile dysfunction, but also in recreational settings. Nevertheless, adverse effects have been associated with their use, with nasal bleeding among them. PDE-5 inhibitor action is materialized through the inhibition of the cyclic guanosine monophosphate (cGMP) enzyme. cGMP is present at several sites of the human body in addition to the corpus cavernosum, leading to the adverse effects associated with its nonselective inhibition...
November 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27592525/effects-of-fine-particulate-matter-pm2-5-on-erectile-function-and-its-potential-mechanism-in-rats
#14
Xiaoming Wang, Yubo Yang, Jinhong Li, Yunjin Bai, Yin Tang, Ping Han
OBJECTIVE: To investigate whether the exposure to PM2.5 in rats model can impair erectile function and the possible mechanism. METHODS: Sprague Dawley rats were distributed into 4 groups: (n = 9 each): controls and 3 different PM2.5 exposure levels.Rats were exposed to PM2.5 (0.0 (saline control), 0.8, 1.6, and 3.2 mg/rat ). After exposure period, the ratio of maximum intracavernosal pressure/mean arterial pressure (ICPmax/MAP), molecular-biological indicators in corpus cavernosum tissue and plasma, and the pathological changes of the lung tissue and penile tissue were detected and compared between control group and 3 exposure groups...
September 1, 2016: Urology
https://www.readbyqxmd.com/read/27581752/in-silico-design-of-novel-herg-neutral-sildenafil-like-pde5-inhibitors
#15
Gülru Kayık, Nurcan Ş Tüzün, Serdar Durdagi
Cyclic nucleotide phosphodiesterase enzymes (PDEs) have functions in regulating the levels of intracellular second messengers, 3', 5'-cyclic adenosine monophosphate (cAMP) and 3', 5'-cyclic guanosine monophosphate (cGMP), via hydrolysis and decomposing mechanisms in cells. They take essential roles in modulating various cellular activities such as memory and smooth muscle functions. PDE type 5 (PDE5) inhibitors enhance the vasodilatory effects of cGMP in the corpus cavernosum and they are used to treat erectile dysfunction...
October 6, 2016: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/27581707/pomegranate-juice-causes-a-partial-improvement-through-lowering-oxidative-stress-for-erectile-dysfunction-in-streptozotocin-diabetic-rat
#16
E Onal, D Yilmaz, E Kaya, T Bastaskın, N Bayatlı, S Gur
Erectile dysfunction (ED) is associated with diabetes mellitus (DM). Pomegranate juice (PJ) is a potent antioxidant in diabetes induced oxidative stress. The aim of this study was to evaluate whether the administration of PJ ameliorates ED in streptozotocin (STZ)-diabetic rat model. Adult male Sprague-Dawley rats were divided into three groups (n=10-12, each): (1) Control, (2) STZ (25-35 mg kg(-1), intravenously, 10 weeks) induced DM, and (3) PJ (100 mg kg(-1) day(-1), 10 weeks) treated DM rats. The in vivo erectile [a ratio of intracavernosal pressure (ICP)/mean arterial pressure (MAP)] and ex vivo corpus cavernosum (CC) responses were evaluated...
September 1, 2016: International Journal of Impotence Research
https://www.readbyqxmd.com/read/27565759/chronic-prostatitis-chronic-pelvic-pain-syndrome-impairs-erectile-function-through-increased-endothelial-dysfunction-oxidative-stress-apoptosis-and-corporal-fibrosis-in-a-rat-model
#17
Y Hu, X Niu, G Wang, J Huang, M Liu, B Peng
Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is an independent risk factor for the development of erectile dysfunction (ED). But the molecular mechanisms underlying the relationship between CP/CPPS and ED are still unclear. The aim of this study was to investigate the effect of CP/CPPS on erectile function in a rat model and the possible mechanisms. A rat model of experimental autoimmune prostatitis (EAP) was established to mimic human CP⁄CPPS. Then twenty 2-month-old male Sprague-Dawley rats were divided into EAP group and control group...
August 27, 2016: Andrology
https://www.readbyqxmd.com/read/27557611/anti-inflammatory-and-anti-fibrotic-effects-of-annexin1-on-erectile-function-after-cavernous-nerve-injury-in-rats
#18
F N Facio, M F Facio, L F Spessoto, D Pessutti, L O Reis, S G Campos, S Taboga
The aim of this study was to investigate the effect of the anti-inflammatory and anti-fibrotic actions of ANX1 on erectile function (EF). Forty-eight male Wistar rats were randomly distributed into four equal groups: one group (sham operation-control) and three groups (bilateral cavernous nerve (CN) crush injury). Crush injury groups were treated prior to injury with an intravascular injection of either ANX1 (50 or 100 μg kg(-1)) or vehicle. EF was assessed by CN electrical stimulation at 2 and 7 days after CN injury with histomorphometric and immunohistochemical analysis...
August 25, 2016: International Journal of Impotence Research
https://www.readbyqxmd.com/read/27555503/preserved-erectile-function-in-the-aged-transgenic-rat-harboring-human-tissue-kallikrein-1
#19
Yang Luan, Yajun Ruan, Tao Wang, Li Zhuan, Zheng Wen, Ruibao Chen, Yan Zhang, Kai Cui, Jun Yang, Shaogang Wang, Jihong Liu, Zhangqun Ye, Daowen Wang
INTRODUCTION: Human tissue kallikrein 1 (hKLK1) has enormous potential for the protection of vasodilation and endothelial function in the cardiovascular system. Our previous study proved the decreased expression of kallikrein 1 in the corpus cavernosum (CC) of aged rats, but the role of kallikrein 1 in age-related erectile dysfunction remains unknown. AIM: To explore the effect and underlying mechanisms of hKLK1 on age-related erectile dysfunction. METHODS: Male wild-type Sprague-Dawley rats (WTR) and transgenic rats harboring the hKLK1 gene (TGR) were fed to 4 and 27 months of age, respectively, and divided into four groups: young WTR (yWTR) as the control, young TGR (yTGR), aged WTR (aWTR), and aged TGR (aTGR)...
September 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27540002/beneficial-effect-of-the-nitric-oxide-donor-compound-3-1-3-dioxoisoindolin-2-yl-benzyl-nitrate-on-dysregulated-phosphodiesterase-5-nadph-oxidase-and-nitrosative-stress-in-the-sickle-cell-mouse-penis-implication-for-priapism-treatment
#20
Fábio H Silva, Serkan Karakus, Biljana Musicki, Hotaka Matsui, Trinity J Bivalacqua, Jean L Dos Santos, Fernando F Costa, Arthur L Burnett
Patients with sickle cell disease (SCD) display priapism, and dysregulated nitric oxide (NO) pathway may contribute to this condition. However, current therapies offered for the prevention of priapism in SCD are few. The 3-(1,3-dioxoisoindolin-2-yl)benzyl nitrate (compound 4C) was synthesized through molecular hybridization of hydroxyurea and thalidomide, which displays an NO-donor property. This study aimed to evaluate the effects of compound 4C on functional and molecular alterations of erectile function in murine models that display low NO bioavailability, SCD transgenic mice, and endothelial NO synthase and neuronal NO synthase double gene-deficient (dNOS(-/)) mice, focusing on the dysregulated NO-cGMP- phosphodiesterase type 5 (PDE5) pathway and oxidative stress in erectile tissue...
November 2016: Journal of Pharmacology and Experimental Therapeutics
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