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Corpus cavernosum

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https://www.readbyqxmd.com/read/28106289/the-involvement-of-corin-in-the-progression-of-diabetic-erectile-dysfunction-in-a-rat-model-by-down-regulating-anp-no-cgmp-signal-pathway
#1
Jian Wang, Yuanyuan Mi, Fenglai Yuan, Sheng Wu, Xiaoming You, Feng Dai, Yi Huang, Jia Cao, Jin Zhu, Boxin Xue, Lijie Zhu
This study was aimed to analyze the potential role of Corin in the procession of diabetic ED and to explore the underlying mechanism. Diabetic ED rat model was constructed and the characteristics of diabetic ED and control rats were recorded at 4, 8, 12 and 16 weeks. qRT-PCR and Western bloting were used to detected the mRNA and protein levels. Intracellular cGMP detection was accomplished using a commercial radioimmunoassay method. Vascular endothelial cell from rat corpus cavernosum spiral artery was isolated and transfected with si- Corin to analyzed the potential role of Corin...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28103290/involvement-of-ddah-adma-nos-cgmp-and-cox-2-ptgis-camp-pathways-in-human-tissue-kallikrein-1-protecting-erectile-function-in-aged-rats
#2
Kai Cui, Yang Luan, Zhe Tang, Ke Rao, Tao Wang, Zhong Chen, Shaogang Wang, Jihong Liu, Daowen Wang
Our previous studies had reported that Human Tissue Kallikrein 1 (hKLK1) preserved erectile function in aged transgenic rats, while the detailed mechanism of hKLK1 protecting erectile function in aged rats through activation of cGMP and cAMP was not mentioned. To explore the latent mechanism, male wild-type Sprague-Dawley rats (WTR) and transgenic rats harboring the hKLK1 gene (TGR) were fed to 4 and 18 months old and divided into four groups: young WTR (yWTR) as the control, aged WTR (aWTR), aged TGR (aTGR) and aged TGRs with HOE140 (aTGRH)...
2017: PloS One
https://www.readbyqxmd.com/read/28093890/long-term-follow-up-for-treatment-of-erectile-dysfunction-post-radical-prostatectomy-using-nerve-grafts-and-end-to-side-somatic-autonomic-neurorraphy-a-new-technique
#3
José Carlos Souza Trindade, Fausto Viterbo, André Petean Trindade, Wagner José Fávaro, José Carlos Souza Trindade Filho
: Radical prostatectomy (RP) for prostate cancer treatment, although effective, can lead to severe erectile dysfunction. This study describes a new technique, which aims to reestablish the nerve stimulus in penile erection by two sural nerve graft bridges bilaterally, using the end to side neurorraphy. The first bridge is between femoral nerve and dorsal nerve of penis and the second, is between the femoral nerve and the interior of the corpus cavernosum. In this neurorraphy the endings of the newly formed fibres, generated by the femoral nerve, release acetylcholine inside the cavernous bodies, beginning the erection mechanism...
January 17, 2017: BJU International
https://www.readbyqxmd.com/read/28064474/the-effect-of-alcohol-administration-on-the-corpus-cavernosum
#4
See Min Choi, Deok Ha Seo, Sin Woo Lee, Chunwoo Lee, Seong Uk Jeh, Sung Chul Kam, Jeong Seok Hwa, Ky Hyun Chung, Jae Seog Hyun
PURPOSE: We studied the effects of alcohol administration on the corpus cavernosum (CC) using an animal model. MATERIALS AND METHODS: CC sections and the aortic ring of rabbits were used in an organ bath study. After acute alcohol administration, changes in blood alcohol concentration and electrical stimulation induced intracavernosal pressure/mean arterial pressure (ICP/MAP) percentage were compared in rats. Cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) levels in the CC were measured using immunoassays...
December 22, 2016: World Journal of Men's Health
https://www.readbyqxmd.com/read/27999920/bilateral-arterial%C3%A2-embolization-of-the-prostate-through-a-single-prostatic-artery-a-case-series
#5
Gregory Amouyal, Olivier Pellerin, Costantino Del Giudice, Carole Déan, Nicolas Thiounn, Marc Sapoval
Peri-prostatic shunts are frequent during PAE, carrying the risk of non-target embolization of penis/corpus cavernosum or rectum but also the potential advantage to irrigate the contralateral lobe. Sometimes, bilateral embolization is impossible, carrying the risk of limited clinical success. The possibility to reach contralateral prostatic territory from the ipsilateral prostatic artery (PA) and embolize it via peri/intra-prostatic anastomoses could be of interest in this situation. We describe a series of three consecutive patients (among 89 consecutive patients treated by PAE for symptomatic BPH) who underwent successful embolization of both prostatic lobes through catheterization of a PA on only one side...
December 20, 2016: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/27935981/sympathetic-hyperactivity-increased-tyrosine-hydroxylase-and-exaggerated-corpus-cavernosum-relaxations-associated-with-oxidative-stress-plays-a-major-role-in-the-penis-dysfunction-in-townes-sickle-cell-mouse
#6
Fábio H Silva, Mário A Claudino, Fabiano B Calmasini, Eduardo C Alexandre, Carla Franco-Penteado, Arthur L Burnett, Edson Antunes, Fernando F Costa
BACKGROUND: Sickle cell disease patients display priapism that may progress to erectile dysfunction. However, little is known about the pathophysiological alterations of corpus cavernosum in sickle cell disease. OBJECTIVE: Thus, this study aimed to evaluate the functional and molecular alterations of sympathetic machinery and nitric oxide-cyclic guanosine monophosphate signaling pathway in Townes transgenic sickle cell disease mice. METHODS: Concentration-response curves to contractile (phenylephrine) and relaxant agents (acetylcholine and sodium nitroprusside) were obtained in corpus cavernosum strips from sickle and C57BL/6 (control) mice...
2016: PloS One
https://www.readbyqxmd.com/read/27920989/dartos-fascia-interposition-flap-for-penetrating-cavernosal-and-urethral-trauma
#7
Hailiu Yang, Robert D Brown, John Chovanes, Allen D Seftel
We present an unusual case of a single gunshot to the genitalia in which the bullet trajectory injured the urethra, corpus cavernosum, and both testicles. All injuries were successfully repaired during initial exploration. Our report serves as a reminder to clinicians to have a high index of suspicion in this circumstance and consider immediate exploration of all the injured areas. We also demonstrate the use of a dartos fascia interposition flap to cover and separate the concomitant urethral and corporal sutures lines...
January 2017: Urology Case Reports
https://www.readbyqxmd.com/read/27904147/penile-constitutive-nitric-oxide-synthase-expression-in-rats-exposed-to-unpredictable-chronic-mild-stress-role-of-inflammation
#8
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
#9
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
#10
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
#11
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...
December 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27849481/brief-report-systemic-vascular-access-and-resuscitation-via-corpus-cavernosum
#12
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
#13
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
#14
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
#15
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
#16
REVIEW
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
#17
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...
December 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
#18
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...
January 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/27635160/the-role-of-ultrasonography-in-the-diagnosis-and-management-of-penile-trauma
#19
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
#20
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
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