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https://www.readbyqxmd.com/read/28719717/audiometry-results-and-teoae-and-dpoae-amplitudes-in-men-taking-a-phosphodiesterase-type-5-inhibitor-for-erectile-dysfunction
#1
Sertan Öntepeli, Nuray Bayar Muluk, Devrim Tuğlu, Timuçin Şipal
We conducted a prospective study of transient evoked otoacoustic emissions (TEOAEs) and distortion-product otoacoustic emissions (DPOAEs) in men who were taking an oral phosphodiesterase type 5 (PDE5) inhibitor for erectile dysfunction. Our study group was made up of 30 men (60 ears), aged 34 to 60 years (mean: 50.9). They were randomly divided into three groups; 10 men were given sildenafil (Viagra) at 50 mg twice a week, 10 were given tadalafil (Cialis) at 20 mg twice a week, and 10 were given vardenafil (Levitra) at 20 mg twice a week...
July 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28719293/case-report-clinical-features-of-a-case-of-suspected-borrelia-miyamotoi-disease-in-hokkaido-japan
#2
Kimiaki Yamano, Takuya Ito, Kaori Kiyanagi, Hirotaka Yamazaki, Mutsubu Sugawara, Takashige Saito, Norio Ohashi, Aya Zamoto-Niikura, Kozue Sato, Hiroki Kawabata
We herein report a case of suspected Borrelia miyamotoi disease in Hokkaido, Japan. The patient complained of lassitude, arthralgia, and high fever after a tick bite. Furthermore, at the time of consultation, the patient exhibited momentary loss of consciousness and low blood pressure. Laboratory tests revealed elevation of liver enzymes, thrombocytopenia, and increased C-reactive protein. Seroconversion to B. miyamotoi glycerophosphoryl diester phosphodiesterase antigen suggested the patient was infected with a relapsing fever group Borrelia species...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28717064/sildenafil-improves-heart-rate-variability-in-dogs-with-asymptomatic-myxomatous-mitral-valve-degeneration
#3
Prapawadee Pirintr, Nakkawee Saengklub, Vudhiporn Limprasutr, Suwanakiet Sawangkoon, Anusak Kijtawornrat
Myxomatous mitral valve degeneration (MMVD) causes an imbalance of sympathovagal activity resulted in poor cardiac outcomes. Phosphodiesterase-5 inhibitors have been revealed cardioprotective effect in patients with heart diseases. This study aimed to 1) compare the heart rate variability (HRV) between asymptomatic MMVD and healthy dogs and 2) assess long-term effects of sildenafil and enalapril on time- and frequency-domains analyzes. Thirty-four dogs with MMVD stage B1 or B2 and thirteen healthy dogs were recruited into the study...
July 17, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28713578/retrospective-evaluation-of-pimobendan-and-sildenafil-therapy-for-severe-pulmonary-hypertension-due-to-lung-disease-and-hypoxia-in-28-dogs-2007-2013
#4
Lisa A Murphy, Nicholas Russell, Domenico Bianco, Reid K Nakamura
Pulmonary hypertension (PH) is the persistent abnormal increase in pulmonary artery (PA) pressure and in dogs is usually secondary to congenital disease causing pulmonary over circulation, chronic respiratory disease and elevated left atrial pressure. Sildenafil (SF) is a phosphodiesterase (PDE) V inhibitor that causes pulmonary artery (PA) vasodilation by increasing pulmonary vascular concentrations of cyclic guanosine monophosphate which subsequently increases the activity of endogenous nitric oxide. Pimobendan (PB) is a PDE III inhibitor with calcium sensitizing effects thereby exerting positive inotropy and vasodilation...
May 2017: Veterinary Medicine and Science
https://www.readbyqxmd.com/read/28711509/listeria-monocytogenes-pdee-a-phosphodiesterase-that-contributes-to-virulence-and-has-hydrolytic-activity-against-cyclic-mononucleotides-and-cyclic-dinucleotides
#5
Swetha Reddy, Gokul Turaga, Hossam Abdelhamed, Michelle M Banes, Robert W Wills, Mark L Lawrence
We have identified and partially characterized a putative HD domain hydrolase, LMOf2365_2464, which is highly expressed during listerial intracellular replication. LMOf2365_2464 is annotated as a putative HD domain-containing hydrolase. The ability of an isogenic mutant strain, F2365Δ2464, to adhere, invade and replicate in intestinal epithelial cells (Caco-2) was significantly lower than parent strain F2365. Colonization of mouse liver and spleen by L. monocytogenes F2365 was significantly higher than it was for the mutant...
July 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28710333/different-phosphodiesterases-pdes-regulate-distinct-phosphoproteomes-during-camp-signaling
#6
Paul M Epstein
No abstract text is available yet for this article.
July 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28709568/current-and-emerging-topical-therapies-for-atopic-dermatitis
#7
Jeremy Udkoff, Andrea Waldman, Jusleen Ahluwalia, Jenna Borok, Lawrence F Eichenfield
The pathogenesis of atopic dermatitis (AD) involves epidermal barrier dysfunction and T helper cell type 2 (Th2) lymphocyte-driven inflammation. Cytokines, such as interleukin 4 (IL-4) and IL-13, are important in this reaction. They stimulate B cells to produce immunoglobulin E, causing atopic disease. This process has been well characterized, and new therapies for AD, such as phosphodiesterase 4 (PDE-4) inhibitors, Th2-expressed chemoattractant receptor-homologous molecule antagonists, and Janus kinase inhibitors, work by antagonizing this cellular pathway...
July 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/28708203/medical-treatment-of-erectile-dysfunction-too-many-medical-prescriptions
#8
Paolo Capogrosso, Eugenio Ventimiglia, Davide Oreggia, Andrea Salonia, Francesco Montorsi
Erectile dysfunction (ED) is a worldwide commonly reported condition; epidemiological data showed a prevalence ranging from 2.3 to 53.4% within different population subsets. In this context, the advent of phosphodiesterase type 5 inhibitors (PDE5is) in the second mid of 1990s has deeply changed the treatment scenario of this bothersome condition. Being user-friendly compounds with an excellent overall safety profile, PDE5is emerged as the first-line treatment for ED, thus overcoming topical alprostadil and intracavernous injections (ICIs)...
July 5, 2017: Urologia
https://www.readbyqxmd.com/read/28706457/relaxant-and-anti-inflammatory-effect-of-two-thalidomide-analogs-as-pde-4-inhibitors-in-pregnant-rat-uterus
#9
Víctor Manuel Muñoz-Pérez, Eduardo Fernández-Martínez, Héctor Ponce-Monter, Mario I Ortiz
The aim of this study was to evaluate the relaxant and anti-inflammatory effects of two thalidomide analogs as phosphodiesterase-4 (PDE-4) inhibitors in pregnant rat uterus. Uteri from Wistar female rats were isolated at 19 day of pregnancy. Uterine samples were used in functional studies to evaluate the inhibitory effects of the thalidomide analogs, methyl 3-(4-nitrophthalimido)-3-(3,4-dimethoxyphenyl)-propanoate (4NO2PDPMe) and methyl 3-(4-aminophthalimido)-3-(3,4-dimethoxyphenyl)-propanoate (4APDPMe), on prostaglandin-F2α (PGF2α)-induced phasic, K(+)-induced tonic, and Ca(2+)-induced contractions...
July 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/28705807/augmentation-of-cgmp-pkg-pathway-and-colonic-motility-by-hydrogen-sulfide
#10
Ancy D Nalli, Sayak Bhattacharya, Hongxia Wang, Derek M Kendig, John R Grider, Karnam S Murthy
Hydrogen sulfide (H2S), like nitric oxide (NO), causes smooth muscle relaxation, but unlike NO, does not stimulate soluble guanylyl cyclase (sGC) activity and generate cGMP. The aim of this study was to investigate the interplay between NO and H2S in colonic smooth muscle. In colonic smooth muscle from rabbit, mouse and human, L-cysteine, substrate of cystathionine-γ-lyase (CSE), or NaHS, an H2S donor, inhibited phosphodiesterase 5 (PDE5) activity and augmented the increase in cGMP levels, IP3 receptor phosphorylation at Ser(1756) (measured as a proxy for PKG activation), and muscle relaxation in response to NO donor, s-nitrosoglutathione (GSNO), suggesting augmentation of cGMP/PKG pathway by H2S...
July 13, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28705306/riociguat-for-patients-with-chronic-thromboembolic-pulmonary-hypertension-usefulness-of-transitioning-from-phosphodiesterase-type-5-inhibitor
#11
Keiko Yamamoto, Nobuhiro Tanabe, Rika Suda, Akane Sasaki, Akane Matsumura, Ryogo Ema, Hajime Kasai, Fumiaki Kato, Ayumi Sekine, Rintaro Nishimura, Takayuki Jujo, Toshihiko Sugiura, Ayako Shigeta, Seiichiro Sakao, Koichiro Tatsumi
BACKGROUND: Riociguat, the first approved drug for patients with chronic thromboembolic pulmonary hypertension (CTEPH), is a soluble guanylate cyclase (sGC) Stimulator. It directly stimulates sGC independently of nitric oxide (NO) and increases sGC sensitivity for NO. The safety and efficacy of transitioning from a phosphodiesterase 5 inhibitor (PDE5i) to riociguat is unknown. METHODS AND RESULTS: Twenty-three patients were prospectively enrolled: 8 symptomatic patients with inadequate clinical responses to PDE5i were changed to riociguat (transitioned group); 15 started riociguat anew (new or add-on group)...
July 2017: Respiratory Investigation
https://www.readbyqxmd.com/read/28704396/phenotypic-chemical-and-functional-characterization-of-cyclic-nucleotide-phosphodiesterase-4-pde4-as-a-potential-anthelmintic-drug-target
#12
Thavy Long, Liliana Rojo-Arreola, Da Shi, Nelly El-Sakkary, Kurt Jarnagin, Fernando Rock, Maliwan Meewan, Alberto A Rascón, Lin Lin, Katherine A Cunningham, George A Lemieux, Larissa Podust, Ruben Abagyan, Kaveh Ashrafi, James H McKerrow, Conor R Caffrey
BACKGROUND: Reliance on just one drug to treat the prevalent tropical disease, schistosomiasis, spurs the search for new drugs and drug targets. Inhibitors of human cyclic nucleotide phosphodiesterases (huPDEs), including PDE4, are under development as novel drugs to treat a range of chronic indications including asthma, chronic obstructive pulmonary disease and Alzheimer's disease. One class of huPDE4 inhibitors that have yielded marketed drugs is the benzoxaboroles (Anacor Pharmaceuticals)...
July 13, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28704395/intraperitoneal-pyrophosphate-treatment-reduces-renal-calcifications-in-npt2a-null-mice
#13
Daniel Caballero, Yuwen Li, Jonathan Fetene, Julian Ponsetto, Alyssa Chen, Chuanlong Zhu, Demetrios T Braddock, Clemens Bergwitz
Mutations in the proximal tubular sodium-dependent phosphate co-transporters NPT2a and NPT2c have been reported in patients with renal stone disease and nephrocalcinosis, however the relative contribution of genotype, dietary calcium and phosphate, and modifiers of mineralization such as pyrophosphate (PPi) to the formation of renal mineral deposits is unclear. In the present study, we used Npt2a-/- mice to model the renal calcifications observed in these disorders. We observed elevated urinary excretion of PPi in Npt2a-/- mice when compared to WT mice...
2017: PloS One
https://www.readbyqxmd.com/read/28702718/single-center-experience-using-selexipag-in-a-pediatric-population
#14
Roberto Gallotti, Diana E Drogalis-Kim, Gary Satou, Juan Alejos
Pulmonary arterial hypertension (PAH) is a rare and progressive disorder. Current treatment in the pediatric population includes phosphodiesterase 5 inhibitors (PDE-5i), endothelin receptor antagonists (ERA), and both inhaled and intravenous prostacyclin pathway agonists. As of December 22, 2015 the first oral prostacyclin pathway agonist, selexipag (Uptravi(®)), was FDA approved in the US. In this case series, we discuss our single-center experience using selexipag in a pediatric population, composed of both patients with idiopathic PAH, and patients with congenital heart disease and PAH...
July 13, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28702510/phosphodiesterase-5-inhibitors-for-premature-ejaculation-a-systematic-review-and-meta-analysis
#15
Marrissa Martyn-St James, Katy Cooper, Shijie Ren, Eva Kaltenthaler, K Dickinson, A Cantrell, Kevan Wylie, Leila Frodsham, Catherine Hood
CONTEXT: Phosphodiesterase-5 inhibitors (PDE5is) are prescribed off-label for the treatment of premature ejaculation (PE). OBJECTIVE: To systematically review the evidence from randomised controlled trials (RCTs) for PDE5is in the management of PE. EVIDENCE ACQUISITION: MEDLINE and other databases were searched to September 2015. Quality of RCTs was assessed. Intra-vaginal ejaculatory latency time (IELT) data were pooled in a meta-analysis...
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28701498/phosphodiesterase-4-rethinking-cognition-in-parkinson-disease
#16
EDITORIAL
Claudia Jacova, Stewart A Factor
No abstract text is available yet for this article.
July 12, 2017: Neurology
https://www.readbyqxmd.com/read/28701494/loss-of-phosphodiesterase-4-in-parkinson-disease-relevance-to-cognitive-deficits
#17
Flavia Niccolini, Heather Wilson, Gennaro Pagano, Christopher Coello, Mitul A Mehta, Graham E Searle, Roger N Gunn, Eugenii A Rabiner, Thomas Foltynie, Marios Politis
OBJECTIVE: To assess in vivo the expression of phosphodiesterase 4 (PDE4) and its relevance to cognitive symptoms in patients with Parkinson disease (PD) using [(11)C]rolipram PET. METHODS: We studied 12 levodopa-treated patients with PD with no concurrent diagnosis of mild cognitive impairment or dementia. Their data were compared with those from 12 healthy controls. All participants underwent neuropsychiatric and cognitive assessment using the Cambridge Neuropsychological Test Automated Battery...
July 12, 2017: Neurology
https://www.readbyqxmd.com/read/28700469/microarray-analysis-of-copy-number-variations-and-gene-expression-profiles-in-prostate-cancer
#18
Yuping Han, Xuefei Jin, Hongyan Li, Kaichen Wang, Ji Gao, Lide Song, Yanting Lv
BACKGROUND: This study aimed to identify potential prostate cancer (PC)-related variations in gene expression profiles. METHODS: Microarray data from the GSE21032 dataset that contained the whole-transcript and exon-level expression profile (GSE21034) and Agilent 244K array-comparative genomic hybridization data (GSE21035) were downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) and copy-number variations (CNVs) were identified between PC and normal tissue samples...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28698098/development-of-a-single-cell-glxr-based-camp-biosensor-for-corynebacterium-glutamicum
#19
Julia Schulte, Meike Baumgart, Michael Bott
Cyclic adenosine monophosphate (cAMP) plays a regulatory role as second messenger in many species. In the industrial model organism Corynebacterium glutamicum, cAMP acts as effector of the global transcriptional regulator GlxR, a homolog of enterobacterial Crp. The cAMP-GlxR complex activates or represses the expression of about 200 target genes. CyaB, a membrane-bound class III adenylate cyclase, synthesizes cAMP from ATP, but another yet unknown cAMP-forming enzyme is likely present in C. glutamicum. Recently, we identified the cAMP phosphodiesterase CpdA, which catalyzes the conversion of cAMP to AMP...
July 8, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28698053/stable-c-n-axial-chirality-in-1-aryluracil-scaffold-and-differences-in-in-vitro-metabolic-clearance-between-atropisomers-of-pde4-inhibitor
#20
Futoshi Hasegawa, Kazushi Kawamura, Hiroshi Tsuchikawa, Michio Murata
We report herein the stable C-N axial chirality in a 1-phenyl-6-aminouracil scaffold owing to the presence of various functional groups at the ortho-position of the N(1)-phenyl group. Racemic 1-phenyl-6-aminouracils were first separated by chiral HPLC or converting them to the corresponding diastereomers using a chiral resolving agent. We then determined the rotational barrier of each atropisomer by a thermal racemization method and found that these compounds have rotational barriers similar to other C-N axially chiral biaryls...
June 27, 2017: Bioorganic & Medicinal Chemistry
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