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https://www.readbyqxmd.com/read/27887774/rationale-and-study-design-of-respite-an-open-label-phase-3b-study-of-riociguat-in-patients-with-pulmonary-arterial-hypertension-who-demonstrate-an-insufficient-response-to-treatment-with-phosphodiesterase-5-inhibitors
#1
Marius M Hoeper, James R Klinger, Raymond L Benza, Gerald Simonneau, David Langleben, Robert Naeije, Paul A Corris
Patients with pulmonary arterial hypertension (PAH) who do not have an adequate response to therapy with phosphodiesterase-5 inhibitors (PDE-5i) may have insufficient synthesis of cyclic guanosine monophosphate (cGMP). These patients may respond to a direct soluble guanylate cyclase (sGC) stimulator such as riociguat. RESPITE (NCT02007629) was an open-label, multicenter, uncontrolled, single-arm phase 3b study of riociguat in patients with PAH who demonstrated an insufficient response to treatment with PDE-5i...
November 5, 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27881492/determination-of-common-adulterants-in-herbal-medicine-and-food-samples-using-core-shell-column-coupled-to-tandem-mass-spectrometry
#2
Haider A J Al Lawati, Idris Al Busaidi, Afsal M Kadavilpparampu, FakhrEldin O Suliman
High-performance liquid chromatography coupled to tandem mass spectrometry was used to develop and validate a rapid method to qualitatively and quantitatively analyse 18 common adulterants in herbal medicine and food samples. Initially, the mobile phase composition was optimized in three different columns: core-shell, monolithic and standard 3.5-µm-particle-size columns. The results show that the core-shell column provides the best separation. Moreover, the tandem mass spectrometry was optimized. The linear range for all adulterants was 0...
November 23, 2016: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/27871960/useful-implications-of-low-dose-long-term-use-of-pde-5-inhibitors
#3
REVIEW
Taymour Mostafa
INTRODUCTION: Phosphodiesterase type 5 (PDE-5) hydrolyzes cyclic guanylate monophosphate (cGMP) specifically to 5' GMP, promoting successful corporeal vascular relaxation and penile erection during sexual stimulation. Oral PDE-5 inhibitors such as sildenafil, vardenafil, tadalafil, and avanafil have provided noninvasive, effective, well-tolerated treatment for erectile dysfunction (ED) patients and, at the same time, stimulated both academic and clinical interests. Lately, some oral PDE-5 inhibitors were released as low-dose preparations with the concept of potential daily administration and long-term use...
July 2016: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/27865471/satisfaction-and-treatment-adherence-in-erectile-dysfunction-in-the-medium-and-long-term
#4
J Panach-Navarrete, A Morales-Giraldo, C Ferrandis-Cortés, F García-Morata, J C Pastor-Lence, J M Martínez-Jabaloyas
INTRODUCTION: The aim of this study was to show the satisfaction and treatment adherence in erectile dysfunction (ED) in the medium and long term. MATERIAL AND METHODS: A descriptive, comparative study was conducted in 2 centres through telephone interviews with patients who came for an initial visit between 2012 and 2014 for ED. A complete case history review was conducted on the use of and withdrawal from treatment. For current use, the Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS) and the Global Assessment Questionnaire (GAQ) were filled out; for past use, only the GAQ was filled out...
November 16, 2016: Actas Urologicas Españolas
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
#5
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/27855594/when-chems-meet-sex-a-rising-phenomenon-called-chemsex
#6
Raffaele Giorgetti, Adriano Tagliabracci, Fabrizio Schifano, Simona Zaami, Enrico Marinelli, Francesco Paolo Busardò
BACKGROUND: The term "chemsex" was coined to indicate the voluntary intake of psychoactive and non psychoactive drugs in the context of recreational settings to facilitate and/or to enhance sexual intercourses mostly among men who have sex with other men (MSM). OBJECTIVE: The authors aimed to review the mechanisms of action, the toxicity and the pattern of use and abuse of substances involved in "chemsex" practice together with the sociocultural background underlying it and the health-related consequences that they may have...
November 17, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27845219/efficacy-of-daily-low-dose-tadalafil-for-treating-overactive-bladder-results-of-a-randomized-double-blind-placebo-controlled-trial
#7
Hongde Chen, Feng Wang, Zhixian Yu, Yirong Zhang, Chaohui Liu, Shengjie Dai, Bicheng Chen, Jiaju Lv
OBJECTIVES: To evaluate the efficacy of daily low-dose tadalafil therapy for overactive bladder (OAB) in women. PATIENTS AND METHODS: A total of 96 women with idiopathic OAB from three medical centers in the south of Zhejiang Province of China were randomly assigned to treatment with daily low-dose tadalafil (5 mg, n=48) or placebo (n=48) for 3 months. The Indevus urgency severity scale (IUSS), overactive bladder symptom score (OABSS),([2]) and a 3-day micturition diary with frequency, incontinence, and urgency episodes were recorded and compared before the treatment, every 2 weeks following the treatment, and 3 months after the treatment...
November 11, 2016: Urology
https://www.readbyqxmd.com/read/27843073/off-target-effect-of-sildenafil-on-postsurgical-erectile-dysfunction-alternate-pathways-and-localized-delivery-system
#8
Amirali Salmasi, Geun Taek Lee, Neal Patel, Ritu Goyal, Michael Dinizo, Young Suk Kwon, Part K Modi, Izak Faiena, Nara Lee, Johanna L Hannan, Joachim Kohn, Isaac Yi Kim
INTRODUCTION: There is no consensus on the best oral phosphodiesterase type 5 inhibitor (PDE5I) for patients undergoing penile rehabilitation after surgical nerve injury. AIM: To determine the mechanism of PDE5I on cultured neuronal cells and the effectiveness of local drug delivery using nanospheres (NSPs) to sites of nerve injury in a rat model of bilateral cavernous nerve injury (BCNI). METHODS: The effects of sildenafil, tadalafil, and vardenafil on cyclic adenosine monophosphate, cyclic guanosine monophosphate, and cell survival after exposure to hypoxia and H2O2 were measured in PC12, SH-SY5Y, and NTERA-2 (NT2) cell cultures...
November 11, 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27821175/early-onset-fetal-growth-restriction-treated-with-the-long-acting-phosphodiesterase-5-inhibitor-tadalafil-a-case-report
#9
Mito Sakamoto, Kazuhiro Osato, Michiko Kubo, Masafumi Nii, Hiroaki Tanaka, Nao Murabayashi, Takashi Umekawa, Yuki Kamimoto, Tomoaki Ikeda
BACKGROUND: Severe early-onset fetal growth restriction occurs in 0.4 % of all pregnancies, and the prognoses of these patients are dismal. Severely growth-restricted fetuses (far below 500 g) are thought to be nonviable. Since there have not been effective treatments for such fetal patients, obstetricians have simply tried to identify the optimal timing for their delivery. There are a few reports suggesting that the phosphodiesterase type 5 inhibitor sildenafil has some limited beneficial effects on fetal growth, but there are no such reports on tadalafil, another derivative phosphodiesterase type 5 inhibitor which has a much longer half-life than sildenafil...
November 8, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27819758/effect-of-tadalafil-5mg-daily-treatment-on-the-ejaculatory-times-lower-urinary-tract-symptoms-and-erectile-function-in-patients-with-erectile-dysfunction
#10
Mehmet Karabakan, Ercument Keskin, Serkan Akdemir, Aliseydi Bozkurt
OBJECTIVE: To investigate the effect of a 5mg daily tadalafil treatment on the ejaculation time, erectile function and lower urinary tract symptoms (LUTS) in patients with erectile dysfunction. MATERIALS AND METHODS: A total of 60 patients diagnosed with erectile dysfunction were retrospectively evaluated using the international index of erectile function questionnaire-5 (IIEF-5), intravaginal ejaculatory latency time (IELT) and international prostate symptoms scores (IPSS)...
November 2, 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/27800121/erectile-dysfunction-drugs-changed-the-protein-expressions-and-activities-of-drug-metabolising-enzymes-in-the-liver-of-male-rats
#11
Salah A Sheweita, Mona Wally, Mostafa Hassan
Erectile dysfunction (ED) is a major health problem and is mainly associated with the persistent inability of men to maintain sufficient erection for satisfactory sexual performance. Millions of men are using sildenafil, vardenafil, and/or tadalafil for ED treatment. Cytochrome P450s (CYPs) play a central role in the metabolism of a wide range of xenobiotics as well as endogenous compounds. Susceptibility of individuals to the adverse effects of different drugs is mainly dependent on the expression of CYPs proteins...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27799745/pathophysiology-of-visual-disorders-induced-by-phosphodiesterase-inhibitors-in-the-treatment-of-erectile-dysfunction
#12
REVIEW
Marilita M Moschos, Eirini Nitoda
AIM: The aim of this review was to summarize the ocular action of the most common phosphodiesterase (PDE) inhibitors used for the treatment of erectile dysfunction and the subsequent visual disorders. METHOD: This is a literature review of several important articles focusing on the pathophysiology of visual disorders induced by PDE inhibitors. RESULTS: PDE inhibitors have been associated with ocular side effects, including changes in color vision and light perception, blurred vision, transient alterations in electroretinogram (ERG), conjunctival hyperemia, ocular pain, and photophobia...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27769022/tadalafil-reduces-airway-hyperactivity-and-protects-against-lung-and-respiratory-airways-dysfunction-in-a-rat-model-of-silicosis
#13
Rania R Abdelaziz, Wagdi F Elkashef, Eman Said
Silicosis is a crippling respiratory disorder characterized by massive lung inflammation and fibrosis. The current study provides evidence on the protective potential of tadalafil; a specific phosphodiesterase-5 (PDE-5) inhibitor against experimentally-induced pulmonary silicosis in rats. Silicosis was induced by intranasal instillation of crystalline silica (50mg/rat). Halofuginone hydrobromide; a standard collagen-1 synthesis inhibitor was selected as a reference anti-fibrotic. Daily oral administration of tadalafil (1mg/kg) for 8weeks significantly ameliorated silica-induced pulmonary damage...
October 18, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27763796/medication-use-among-mount-everest-climbers-practice-and-attitudes
#14
Andrew M Luks, Colin Grissom, Luanne Freer, Peter Hackett
Luks, Andrew M., Colin Grissom, Luanne Freer, and Peter Hackett. Medication use among mount Everest climbers: practice and attitudes. High Alt Med Biol. 00:000-000, 2016.-The lay public, media, and medical experts have expressed concern about the ethics of climbers using medications to improve performance and increase the odds of summit success while climbing at high altitude, but the true incidence of this practice remains unclear. We conducted an anonymous survey of climbers who have attempted to climb Mt...
October 20, 2016: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/27752863/effects-of-daily-tadalafil-on-lower-urinary-tract-symptoms-in-young-men-with-multiple-sclerosis-and-erectile-dysfunction-a-pilot-study
#15
D Francomano, A Ilacqua, A Cortese, G Tartaglia, A Lenzi, M Inghilleri, A Aversa
PURPOSE: Men affected by multiple sclerosis often experience neurogenic overactive bladder (OAB), lower urinary tract symptoms and erectile dysfunction (ED). The aim of the study was to investigate modifications of urinary and sexual functions after administration of daily tadalafil (TAD) 5 mg. METHODS: Twenty men were enrolled in a single-blind, 4-week prospective study while 10 men without treatment served as controls. Primary outcomes were changes from baseline of International Prostate Symptom (IPSS), OAB questionnaire (OAB-q-short form) and International Index of Erectile Function (IIEF-5) scores...
October 17, 2016: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/27745818/initial-combination-therapy-with-ambrisentan-and-tadalafil-and-mortality-in-patients-with-pulmonary-arterial-hypertension-a-secondary-analysis-of-the-results-from-the-randomised-controlled-ambition-study
#16
Marius M Hoeper, Vallerie V McLaughlin, Joan Albert Barberá, Adaani E Frost, Hossein-Ardeschir Ghofrani, Andrew J Peacock, Gérald Simonneau, Stephan Rosenkranz, Ronald J Oudiz, R James White, Karen L Miller, Jonathan Langley, Julia H N Harris, Christiana Blair, Lewis J Rubin, Jean-Luc Vachiery
BACKGROUND: In treatment-naive patients with pulmonary arterial hypertension, initial combination therapy with ambrisentan and tadalafil reduces the risk of clinical failure events compared with monotherapy. We did this secondary analysis to further investigate the effect of combination therapy on survival. METHODS: We analysed survival data from the modified intention-to-treat population of the Ambrisentan and Tadalafil in Patients with Pulmonary Arterial Hypertension (AMBITION) trial...
October 10, 2016: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/27736652/combination-of-tadalafil-and-diltiazem-attenuates-renal-ischemia-reperfusion-induced-acute-renal-failure-in-rats
#17
Alaa E El-Sisi, Samia S Sokar, Sally E Abu-Risha, Hanaa A Ibrahim
Life threatening conditions characterized by renal ischemia/reperfusion (RIR) such as kidney transplantation, partial nephrectomy, renal artery angioplasty, cardiopulmonary bypass and aortic bypass surgery, continue to be among the most frequent causes of acute renal failure. The current study investigated the possible protective effects of tadalafil alone and in combination with diltiazem in experimentally-induced renal ischemia/reperfusion injury in rats. Possible underlying mechanisms were also investigated such as oxidative stress and inflammation...
October 10, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27735021/study-on-the-clinical-value-of-alprostadil-combined-with-%C3%AE-lipoic-acid-in-treatment-of-type-2-diabetes-mellitus-patients-with-erectile-dysfunction
#18
L Zhang, H-Y Zhang, F-C Huang, Q Huang, C Liu, J-R Li
OBJECTIVE: We investigated the clinical value of alprostadil combined with the α-lipoic acid in treating type 2 diabetes mellitus with erectile dysfunction (DMED). PATIENTS AND METHODS: We selected a total of 76 cases of patients who were admitted to endocrinology department of our hospital from June 2014 to June 2015 and diagnosed as DMED, and the average age was (46.7 ± 7.2) years old, average course of diabetes mellitus was (6.2 ± 2.8) years and average body mass index was (25...
September 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27729968/tadalafil-for-endometrial-growth-in-clomiphene-citrate-stimulated-cycles-in-an-iui-programma-a-pilot-study
#19
D H Mendez Lozano, M V Lenero, R L Gonzalez, J B Scheffer, M T Gonzalez, Y Barron, R Frydman
AIM OF THE STUDY: The objective of this study was to assess the impact of tadalafil on endometrial growth, the uterine artery pulsatility index (PI) and the uterine artery resistance index (RI) in patients under clomiphene ovarian stimulation for intrauterine insemination (IUI). METHODS: This randomized crossover study included 30 patients with a normal endometrium over 53 cycles, and 46 of those cycles in 23 patients were included in the analysis. In group A the patients were under 100 mg clomiphene daily for five days (2-6) and 5 mg tadalafil daily for 7 days (4-10)...
December 28, 2015: Facts, Views & Vision in ObGyn
https://www.readbyqxmd.com/read/27701772/effects-of-an-alpha1a-d-adrenoceptor-antagonist-naftopidil-and-a-phosphodiesterase-type-5-inhibitor-tadalafil-on-urinary-bladder-remodeling-in-rats-with-spinal-cord-injury
#20
Katsumi Kadekawa, Tsuyoshi Majima, Naoki Kawamorita, Hiroki Okada, Tsuyoshi Yoshizawa, Kenichi Mori, Pradeep Tyagi, Kimio Sugaya, Naoki Yoshimura
AIMS: In order to clarify whether an alpha1A/D-adrenoceptor (α1 A/D-AR) antagonist, naftopidil, or a phosphodiesterase type 5 (PDE5) inhibitor, tadalafil, prevents bladder wall remodeling after spinal cord injury (SCI), we examined the bladder and urethral activity as well as ischemic and fibrotic changes in the bladder using SCI rats with or without naftopidil or tadalafil treatment. METHODS: Adult female Sprague-Dawley rats were divided into four groups: (1) normal (spinal cord intact); (2) vehicle SCI; (3) naftopidil SCI; and (4) tadalafil SCI groups...
October 4, 2016: Neurourology and Urodynamics
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