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https://www.readbyqxmd.com/read/29785490/microcirculatory-effects-of-sildenafil-in-experimental-testicular-torsion-in-rats
#1
Márton Oroszi, Andrea Szabó, Ádám Miklós Fehér, Gábor Deák, Zoltán Bajory
PURPOSE: Investigate the short-term effect of sildenafil on microcirculation, especially the velocity, the pattern of the flow and the recruitment of the leukocyte in postcapillaries. METHODS: In male Sprague-Dawley rats, the microcirculatory consequences of 60 min experimental testicular torsion, followed by 240 min of reperfusion, were examined. Using fluorescence intravital microscopy, changes in red blood cell velocity in post-capillary venules and rolling as well as adhesion of leukocytes in the postcapillary venules were examined before the torsion and every hour during the reperfusion period...
May 21, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29773995/hypoxia-reoxygenation-of-rat-renal-arteries-impairs-vasorelaxation-via-modulation-of-endothelium-independent-sgc-cgmp-pkg-signaling
#2
Diana Braun, Christa Zollbrecht, Stefanie Dietze, Rudolf Schubert, Stefan Golz, Holger Summer, Pontus B Persson, Mattias Carlström, Marion Ludwig, Andreas Patzak
Ischemia/reperfusion injury holds a key position in many pathological conditions such as acute kidney injury and in the transition to chronic stages of renal damage. We hypothesized that besides a reported disproportional activation of vasoconstrictor response, hypoxia/reoxygenation (H/R) adversely affects endothelial dilatory systems and impairs relaxation in renal arteries. Rat renal interlobar arteries were studied under isometric conditions. Hypoxia was induced by application of 95% N2 , 5% CO2 for 60 min to the bath solution, followed by a 10 min period of reoxygenation (95% O2 , 5% CO2 )...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29768539/evaluation-of-prophylactic-and-therapeutic-effects-of-sildenafil-on-acute-radiation-proctitis-in-rats
#3
Erkan Yavuz, Gulcin Ercan, Onur Olgac Karagulle, Busra Yaprak Bayrak, Aytac Biricik, Candas Ercetin, Berk Gokcek, Hakan Yigitbas, Ramazan Kusaslan, Atilla Celik, Osman Bilgin Gulcicek
PURPOSE: To investigate the prophylactic and therapeutical effects of sildenafil in a model of acute radiation proctitis (ARP). METHODS: All experimental procedures of this study was examined by histopathological, immunohistochemical and transmission electron microscopic analysis. RESULTS: Our histopathological evaluations indicated significant increases in lesion severity, cryptic apsis, cryptitis, cryptic distortion, reactive atypia and infiltration depth of the control (proctitis) group...
April 2018: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29766318/a-randomized-controlled-trial-evaluating-sildenafil-citrate-in-relieving-ureteral-stent-related-symptoms
#4
Mohamed Tharwat, Mohamed M Elsaadany, Ahmed M Lashin, Ahmed R El-Nahas
PURPOSE: To evaluate the role of sildenafil in relieving ureteral stent symptoms. PATIENTS AND METHODS: A randomized controlled trial was conducted between March 2014 and November 2016. It included adult men who underwent unilateral ureteric stent after ureteroscopy. Patients who were taking PDE5-Is, alpha-blockers or anticholinergics, had contraindication to sildenafil or developed postoperative complications were not included. Eligible patients were randomized using sealed closed envelops to one of two groups (S and C)...
May 15, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29761247/beneficial-effects-of-fenofibrate-in-pulmonary-hypertension-in-rats
#5
Palak Galhotra, Pankaj Prabhakar, Himanshu Meghwani, Soheb A Mohammed, Sanjay Kumar Banerjee, Sandeep Seth, Milind P Hote, K H Reeta, Ruma Ray, Subir Kumar Maulik
Pulmonary hypertension (PH) is a morbid complication of cardiopulmonary as well as several systemic diseases in humans. It is rapidly progressive and fatal if left untreated. In the present study, we investigated the effect of PPARα agonist fenofibrate (FF) on monocrotaline (MCT)-induced PH in rats. FF, because of its pleiotropic property, could be helpful in reducing inflammation, oxidative stress, and reactive oxygen species. On day 1, MCT (50 mg/kg, s.c.) was given to all the rats in MCT, sildenafil, and FF group except normal control rats...
May 14, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29756719/-pulmonary-hypertension-associated-with-the-human-immunodeficiency-virus-in-children-treatment-with-sildenafil-a-case-report
#6
Carolina Stepffer, Evelyn Gaynor, Mariela López, Norma E González, Micaela Arri, Ana Ms De Dios
Pulmonary hypertension associated with human immunodeficiency virus infection is an extremely rare disease in pediatrics; it requires a high clinical suspicion to reach a diagnosis. Its appearance poses an unfavorable prognostic, but early diagnosis and specific treatment can improve outcomes. We report the clinical case of a fifteen-year-old patient diagnosed with human immunodeficiency virus infection of vertical transmission, without antiretroviral treatment, with cough and progressive exertional dyspnea, associated with signs of right heart failure in which severe pulmonary hypertension was diagnosed...
June 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29753799/predictors-of-erectile-function-normalization-in-men-with-erectile-dysfunction-treated-with-placebo
#7
John P Mulhall, Martin Carlsson, Vera Stecher, Li-Jung Tseng
BACKGROUND: Clinical study and practice data have shown sildenafil improves sexual function in men with erectile dysfunction (ED). However, some men treated with placebo in double-blind, placebo-controlled sildenafil studies also report improved erectile function as measured by International Index of Erectile Function (IIEF)-Erectile Function Domain (EFD) scores. AIM: This analysis estimated the relationship between post-baseline IIEF-EFD scores and demographic variables, including co-morbidities, in men with ED receiving placebo in flexible-dose sildenafil studies...
May 9, 2018: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29753546/sildenafil-and-retinopathy-of-prematurity-in-preterm-infants-with-bronchopulmonary-dysplasia
#8
David Aboudi, Nithya Swaminathan, Heather Brumberg, Qiuhu Shi, Deborah Friedman, Boriana Parvez, Usha Krishnan
OBJECTIVE: To assess whether sildenafil is associated with worsening retinopathy of prematurity (ROP) in very low birth weight (VLBW) infants (≤1500 g) with bronchopulmonary dysplasia (BPD). STUDY DESIGN: This retrospective case-control study included VLBW infants admitted to the neonatal intensive care unit between January 1, 2006, and December 31, 2012. Each infant treated with sildenafil was assigned 3 unexposed controls matched for gestational age, birth weight, and BPD diagnosis...
May 9, 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29745254/treatment-of-rat-congenital-diaphragmatic-hernia-with-sildenafil-and-ns-304-selexipag-s-active-compound-at-the-pseudoglandular-stage-improves-lung-vasculature
#9
Daphne S Mous, Heleen M Kool, Petra E Burgisser, Marjon J Buscop-van Kempen, Koji Nagata, Anne Boerema-de Munck, Joost van Rosmalen, Oleh Dzyubachyk, Rene Mh Wijnen, Dick Tibboel, Robbert J Rottier
Patients with congenital diaphragmatic hernia (CDH) often suffer from severe pulmonary hypertension and the choice of current vasodilator therapy is mostly based on trial and error. Since pulmonary vascular abnormalities are already present early during development, we performed a study to modulate these pulmonary vascular changes at an early stage during gestation. Pregnant Sprague-Dawley rats were treated with nitrofen at day 9.5 of gestation (E9.5) to induce CDH in the offspring and subsequently the phosphodiesterase-5 inhibitor sildenafil and/or the novel prostaglandin-I receptor agonist selexipag (NS-304) were administered from E17...
May 10, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29743944/repurposing-drugs-in-oncology-redo-selective-pde5-inhibitors-as-anti-cancer-agents
#10
Pan Pantziarka, Vidula Sukhatme, Sergio Crispino, Gauthier Bouche, Lydie Meheus, Vikas P Sukhatme
Selective phosphodiesterase 5 inhibitors, including sildenafil, tadalafil and vardenafil, are widely-used in the treatment of erectile dysfunction and pulmonary arterial hypertension. They are also well-known as examples of successful drug repurposing in that they were initially developed for angina and only later developed for erectile dysfunction. However, these drugs may also be effective cancer treatments. A range of evidentiary sources are assessed in this paper and the case made that there is pre-clinical and clinical evidence that these drugs may offer clinical benefit in a range of cancers...
2018: Ecancermedicalscience
https://www.readbyqxmd.com/read/29743916/hybrid-muscular-ventricular-septal-defect-closure-in-a-4-5-kg-infant-followed-by-sildenafil-treatment-and-transcatheter-atrial-septal-defect-occlusion
#11
Michal Galeczka, Roland Fiszer, Szymon Pawlak, Joanna Sliwka, Linda Litwin, Malgorzata Szkutnik
No abstract text is available yet for this article.
2018: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/29735634/evaluation-of-sildenafil-and-tadalafil-for-reversing-constriction-of-fetal-arteries-in-a-human-placenta-perfusion-model
#12
Robert B Walton, Luckey C Reed, Sarah M Estrada, Stacey S Schmiedecke, Diana L Villazana-Kretzer, Peter G Napolitano, Nicholas Ieronimakis
Fetal growth restriction resulting from reduced placental blood perfusion is a major cause of neonatal morbidity and mortality. Aside from intense surveillance and early delivery, there is no treatment for fetal growth restriction. A potential treatment associated with placental vasoconstriction is the class of PDE5 (phosphodiesterase type 5) inhibitors such as sildenafil, which is known to cross the placenta. In contrast, tadalafil, a more potent and selective PDE5 inhibitor has not been studied in pregnancy or experimental models of fetal growth restriction...
May 7, 2018: Hypertension
https://www.readbyqxmd.com/read/29734993/the-effects-of-sildenafil-on-the-respiratory-system-of-patients-with-obstructive-sleep-apnea-and-erectile-dysfunction
#13
Monica L Andersen, Sergio Tufik
No abstract text is available yet for this article.
April 30, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29727543/-efficacy-and-safety-of-traditional-chinese-medicine-combined-with-sildenafil-in-the-treatment-of-ed-in-chinese-men%C3%AF-a-real-world-study
#14
Jun Guo, De-Gui Chang, Lei Chen, Bin Ou-Yang, Rui Zhang, Qiang Geng, Chao Yu, Fu Wang, Qing-He Gao, Guo-Jin Yu, Xiu-Ju Zhang
Objective: To make a real-world study on the efficacy and safety of traditional Chinese medicine (TCM) combined with sildenafil in the treatment of erectile dysfunction (ED) that failed to respond to TCM medication. METHODS: This study included 1 038 ED patients with the International Index of Erectile Function-5 (IIEF-5) scores ≤21 and improvement <30% after 4 weeks of TCM medication, differentially diagnosed with kidney-yang or kidney-yin deficiency syndrome...
October 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29727535/-clinical-treatment-of-erectile-dysfunction-in-type-2-diabeticpatients-in-the-high-altitude-area
#15
Fu-Dong Li, Bin Zhang, Yang-Min Wang
Objective: To investigate the safety and efficacy of pancreatic kininogenase combined with sildenafil in the treatment of erectile dysfunction(ED) in type 2 diabetes mellitus (DM) patients in the high-altitude area. METHODS: This study included 93 ED patients with type 2 DM, all residents of the Xining area 1500 meters above sea level. We randomly divided them into an experimental group (n = 48) and a control group (n = 45), the former treated with pancreatic kininogenase(120 u, tid) and sildenafil (25 mg, qd at bedtime), while the latter with sildenafil only (25 mg, qd at bedtime)...
October 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29724712/mutations-of-the-pde5a-gene-confer-a-survival-advantage-in-patients-with-colon-cancer
#16
Steven Lehrer, Peter H Rheinstein, Kenneth Rosenzweig
Sildenafil is a small molecule that inhibits PDE5. The study of Islam et al validates PDE5 as a colon cancer chemoprevention target in mice (2), as did a second mouse study (3). Our analysis of TCGA data corroborates this finding in humans. Further studies are needed to determine whether sildenafil or other PDE5 inhibitors might be colon cancer preventives or treatments.
May 3, 2018: Cancer Prevention Research
https://www.readbyqxmd.com/read/29724385/sildenafil-added-to-pirfenidone-in-patients-with-advanced-idiopathic-pulmonary-fibrosis-and-risk-of-pulmonary-hypertension-a-phase-iib-randomised-double-blind-placebo-controlled-study-rationale-and-study-design
#17
Jürgen Behr, Steven D Nathan, Sergio Harari, Wim Wuyts, Klaus-Uwe Kirchgaessler, Monica Bengus, Frank Gilberg, Athol U Wells
BACKGROUND: Pulmonary hypertension (PH) is commonly observed in patients with advanced idiopathic pulmonary fibrosis (IPF). Despite the availability of therapies for both IPF and PH, none are approved for PH treatment in the context of significant pulmonary disease. This study will investigate the use of sildenafil added to pirfenidone in patients with advanced IPF and risk of PH, who represent a group with a high unmet medical need. METHODS: This Phase IIb, randomised, double-blind, placebo-controlled trial is actively enrolling patients and will study the efficacy, safety and tolerability of sildenafil or placebo in patients with advanced IPF and intermediate or high probability of Group 3 PH who are receiving a stable dose of pirfenidone...
May 2018: Respiratory Medicine
https://www.readbyqxmd.com/read/29720910/a-retrospective-review-of-infants-receiving-sildenafil
#18
Aliva De, Payal Shah, Jacqueline Szmuszkovicz, Shazia Bhombal, Stanley Azen, Roberta M Kato
OBJECTIVE: The purpose of the study was to assess mortality in an infant population receiving sildenafil. METHODS: A retrospective review of hospitalized infants at Children's Hospital Los Angeles who received sildenafil between 2008 and 2012 was conducted. Patient characteristics, comorbidities, and treatment characteristics were analyzed. Primary outcome was mortality at discharge. Sildenafil dosage ranges were based on the Sildenafil in Treatment-Naïve Children, Aged 1-17 Years, With Pulmonary Arterial Hypertension trial and were categorized as small (<1...
March 2018: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/29716434/effect-of-sildenafil-on-pulmonary-circulation-and-cardiovascular-function-in-near-term-fetal-sheep-during-hypoxemia
#19
Amarnath Bhide, Leena Alanne, Juha Rasanen, Heikki Huhta, Juulia Junno, Merja Kokki, Tiina Erkinaro, Pasi Ohtonen, Mervi Haapsamo, Ganesh Acharya
Sildenafil is a potential new treatment for placental insufficiency in human pregnancies as it reduces the breakdown of vasodilator nitric oxide. Pulmonary vasodilatation is observed in normoxemic fetuses following sildenafil administration. Placental insufficiency often leads to fetal hypoxemia that can cause pulmonary vasoconstriction and fetal cardiac dysfunction as evidenced by reduced isovolumic myocardial velocities. We tested the hypotheses that sildenafil, when given directly to the hypoxemic fetus, reverses reactive pulmonary vasoconstriction, increases left ventricular cardiac output by increasing pulmonary venous return, and ameliorates hypoxemic myocardial dysfunction...
January 1, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29707997/effect-of-combination-sildenafil-and-gemfibrozil-on-cisplatin-induced-nephrotoxicity-role-of-heme-oxygenase-1
#20
Safaa Behiry, Ahmed Rabie, Mahmoud Kora, Wesam Ismail, Dina Sabry, Ahmed Zahran
BACKGROUND/AIM: Cisplatin-induced nephrotoxicity in large proportion of patients. The aim of this work is to clarify the effect of combination of sildenafil and gemfibrozil on cisplatin-induced nephrotoxicity either before or after cisplatin treatment and determination of nephrotoxicity predictors among the measured tissue markers. METHODS: Thirty two adult male albino rats were divided into four equal groups (G) GI control, GII received cisplatin, GIII received sildenafil and gemfibrozil before cisplatin, GIV received sildenafil and gemfibrozil after cisplatin...
November 2018: Renal Failure
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