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https://www.readbyqxmd.com/read/27919709/evaluation-of-anti-zika-virus-activities-of-broad-spectrum-antivirals-and-nih-clinical-collection-compounds-using-a-cell-based-high-throughput-screen-assay
#1
Robert S Adcock, Yong-Kyu Chu, Jennifer E Golden, Dong-Hoon Chung
Recent studies have clearly underscored the association between Zika virus (ZIKV) and severe neurological diseases such as microcephaly and Guillain-Barre syndrome. Given the historical complacency surrounding this virus, however, no significant antiviral screenings have been performed to specifically target ZIKV. As a result, there is an urgent need for a validated screening method and strategy that is focused on highlighting potential anti-ZIKV inhibitors that can be further advanced via rigorous validation and optimization...
December 2, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27904832/frontal-fibrosing-alopecia-treatment-options
#2
Raymond Fertig, Antonella Tosti
Frontal fibrosing alopecia (FFA) is a rare dermatologic disease that causes scarring and hair loss and is increasing in prevalence worldwide. FFA patients typically present with hair loss in the frontal scalp region and eyebrows which may be associated with sensations of itching or burning. FFA is a clinically distinct variant of lichen planopilaris (LPP) that affects predominantly postmenopausal women, although men and premenopausal women may also be affected. Early diagnosis and prompt treatment are necessary to prevent definitive scarring and permanent hair loss...
November 2016: Intractable & Rare Diseases Research
https://www.readbyqxmd.com/read/27880726/chrysophanic-acid-reduces-testosterone-induced-benign-prostatic-hyperplasia-in-rats-by-suppressing-5%C3%AE-reductase-and-extracellular-signal-regulated-kinase
#3
Dong-Hyun Youn, Jinbong Park, Hye-Lin Kim, Yunu Jung, JongWook Kang, Mi-Young Jeong, Gautam Sethi, Kwang Seok Ahn, Jae-Young Um
Benign prostatic hyperplasia (BPH) is one of the most common chronic diseases in male population, of which incidence increases gradually with age. In this study, we investigated the effect of chrysophanic acid (CA) on BPH. BPH was induced by a 4-week injection of testosterone propionate (TP). Four weeks of further injection with vehicle, TP, TP + CA, TP + finasteride was carried on. In the CA treatment group, the prostate weight was reduced and the TP-induced histological changes were restored as the normal control group...
November 17, 2016: Oncotarget
https://www.readbyqxmd.com/read/27866006/the-cardiovascular-safety-of-dutasteride
#4
Sean C Skeldon, Erin M Macdonald, Michael R Law, Anjie Huang, J Michael Paterson, Muhammad M Mamdani, David Juurlink
PURPOSE: Randomized controlled trials suggest an increased risk of heart failure with dutasteride, which inhibits both the type 1 and type 2 isoforms of 5-α reductase. In contrast, no such association has been suggested for finasteride, which selectively inhibits the type 2 isoform. We investigated the risk of cardiovascular events among patients receiving dutasteride relative to finasteride. MATERIALS AND METHODS: Population-based cohort study of Ontario men aged 66 years or older who commenced treatment with dutasteride or finasteride between October 1, 2005 and March 31, 2015...
November 16, 2016: Journal of Urology
https://www.readbyqxmd.com/read/27864106/transurethral-resection-of-prostate-and-bleeding-a-prospective-randomized-double-blind-placebo-controlled-trial-to-see-efficacy-of-short-term-use-of-finasteride-and-dutasteride-on-operative-blood-loss-and-prostatic-micro-vessel-density
#5
Aditi Arora, Ankur Bansal, Bimalesh Purkait, Ashok Kumar Sokhal, Ved Bhaskar, Priyank Yadav, Satyanarayan Sankhwar
OBJECTIVE: To evaluate the effects of short term use of finasteride and dutasteride on amount of intraoperative blood loss and microvessel density (MVD) of prostatic stromal and suburethral tissues in patients with benign prostatic hyperplasia (BPH) prior to TURP METHODS: The study involved 450 male patients who planned to have TURP and were prospectively randomised into three groups (150 patients each). The group 1 received no medication, group 2 received finasteride 5 mg/day and group 3 received dutasteride 0...
November 15, 2016: Urology
https://www.readbyqxmd.com/read/27812496/reversible-exacerbation-of-obstructive-sleep-apnea-by-%C3%AE-1-adrenergic-blockade-with-tamsulosin-a-case-report
#6
Mark Moran
: Obstructive sleep apnea (OSA) is characterized by repeated involuntary closure of the pharyngeal airspace during sleep. Normal activity of the genioglossus (GG) muscle is important in maintaining airway patency, and inhibition of GG activity can contribute to airway closure. Neurons in the hypoglossal motor nucleus (HMN) regulate GG activity. Adrenergic tone is an important regulator of HMN neuronal excitability. In laboratory models α1-adrenergic antagonists inhibit HMN neurons and GG activity, suggesting that α1-adrenergic antagonism might adversely affect patients with OSA...
2016: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/27801959/different-synaptic-stimulation-patterns-influence-the-local-androgenic-and-estrogenic-neurosteroid-availability-triggering-hippocampal-synaptic-plasticity-in-the-male-rat
#7
Michela Di Mauro, Alessandro Tozzi, Paolo Calabresi, Vito Enrico Pettorossi, Silvarosa Grassi
Electrophysiological recordings were used to investigate the role of the local synthesis of 17β-estradiol (E2) and 5α-dihydrotestosterone (DHT) on synaptic long-term effects induced in the hippocampal CA1 region of male rat slices. Long-term depression (LTD) and long-term potentiation (LTP), induced by different stimulation patterns, were examined under the block of the DHT synthesis by finasteride, and the E2 synthesis by letrozole. We used low frequency stimulation (LFS) for LTD, high frequency stimulation (HFS) for LTP, and intermediate patterns differing in duration or frequency...
November 1, 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27789379/a-new-label-free-screen-for-steroid-5%C3%AE-reductase-inhibitors-using-lc-ms
#8
Jukkarin Srivilai, Karma Rabgay, Nantaka Khorana, Neti Waranuch, Nitra Nuengchamnong, Kornkanok Ingkaninan
Steroid 5α-reductase (S5αR) plays an important role in metabolizing testosterone into active androgen dihydrotestosterone (DHT) which is involved in many androgen dependent disorders, such as androgenic alopecia, benign prostatic hyperplasia and acne. The method for screening for S5αR inhibition is key in finding new antagonists. In this study, the label-free S5αR inhibitory assay using LC-MS was developed. S5αR type 1 enzyme was obtained from LNCaP prostate cancer cells. The enzymatic assay was optimised for enzyme-substrate (testosterone) concentration, NADPH-cofactor concentration, solvent tolerance, enzyme activity stability and incubation time...
October 24, 2016: Steroids
https://www.readbyqxmd.com/read/27761703/intraoperative-floppy-iris-syndrome-and-its-association-with-various-concurrent-medications-bulbus-length-patient-age-and-gender
#9
Michael Wahl, Saskia M Tipotsch-Maca, Pia V Vecsei-Marlovits
PURPOSE: To evaluate the association between intraoperative floppy iris syndrome (IFIS) and concurrent medications containing selective alpha1A receptor antagonists as well as nonselective alpha1-adrenergic receptor antagonists, bulbus length, patient age and gender. METHODS: We performed a prospective data acquisition of IFIS occurrence and grading, and retrospective evaluation of concurrent medications, bulbus length, patient age and gender of all patients undergoing cataract surgery over a 6-month period...
October 19, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27750143/exploring-the-neural-mechanisms-of-finasteride-a-proteomic-analysis-in-the-nucleus-accumbens
#10
Alessio Soggiu, Cristian Piras, Viviana Greco, Paola Devoto, Andrea Urbani, Luigino Calzetta, Marco Bortolato, Paola Roncada
The enzyme 5α-reductase (5αR) catalyzes the conversion of progesterone and testosterone into neuroactive steroids implicated in a wide array of behavioral functions. The prototypical 5αR inhibitor, finasteride (FIN), is clinically approved for the treatment of androgenic alopecia and benign prostatic hyperplasia. Recent evidence has shown that FIN, albeit generally well tolerated, can induce untoward psychological effects in a subset of patients; furthermore, this drug may have therapeutic efficacy for a number of different neuropsychiatric conditions, ranging from Tourette syndrome to schizophrenia...
October 6, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27738338/differences-in-reproductive-toxicology-between-alopecia-drugs-an-analysis-on-adverse-events-among-female-and-male-cases
#11
Min Wu, Qingxiong Yu, Qingfeng Li
Alopecia is a dermatological condition with limited therapeutic options. Only two drugs, finasteride and minoxidil, are approved by FDA for alopecia treatment. However, little is known about the differences in adverse effects between these two drugs. We examined the clinical reports submitted to the FDA Adverse Event Reporting System (FAERS) from 2004 to 2014. For both female and males, finasteride was found to be more associated with reproductive toxicity as compared to minoxidil. Among male alopecia cases, finasteride was significantly more concurrent with several forms of sexual dysfunction...
October 12, 2016: Oncotarget
https://www.readbyqxmd.com/read/27735054/2-deoxy-d-glucose-enhances-tonic-inhibition-through-the-neurosteroid-mediated-activation-of-extrasynaptic-gabaa-receptors
#12
Nicola Forte, Lucian Medrihan, Beatrice Cappetti, Pietro Baldelli, Fabio Benfenati
OBJECTIVE: The inhibition of glycolysis exerts potent antiseizure effects, as demonstrated by the efficacy of ketogenic and low-glucose/nonketogenic diets in the treatment of drug-resistant epilepsy. ATP-sensitive potassium (KATP ) channels have been initially identified as the main determinant of the reduction of neuronal hyperexcitability. However, a plethora of other mechanisms have been proposed. Herein, we report the ability of 2-deoxy-d-glucose (2-DG), a glucose analog that inhibits glycolytic enzymes, of potentiating γ-aminobutyric acid (GABA)ergic tonic inhibition via neurosteroid-mediated activation of extrasynaptic GABAA receptors...
October 13, 2016: Epilepsia
https://www.readbyqxmd.com/read/27732901/uvaria-rufa-blume-attenuates-benign-prostatic-hyperplasia-via-inhibiting-5%C3%AE-reductase-and-enhancing-antioxidant-status
#13
Wararut Buncharoen, Kanokporn Saenphet, Supap Saenphet, Chatchote Titaram
ETHNOPHARMACOLOGICAL RELEVANCE: Traditional medicine has used Uvaria rufa Blume as an ethnomedicinal plant for treating fever, skin allergies, intestinal ulcers and prostate disorders including BPH. However, no scientific evidence supports the traditional use. AIM OF THE STUDY: This study aimed to evaluate the therapeutic potential of U. rufa on BPH using in vitro and in vivo models. MATERIALS AND METHODS: In vitro studies screened the efficacy of a 5α-reductase (5αR) inhibition and antioxidant activity of petroleum ether, ethyl acetate, ethanol and aqueous extracts from the stem of U...
October 9, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27727093/-lower-urinary-tract-symptoms-and-pelvic-floor-dysfunction-in-renal-transplant-candidates-and-recipients
#14
R Thuret, S Hurel, F Kleinclauss, M O Timsit
OBJECTIVES: To describe lower urinary tract symptoms (LUTS) and their management in renal transplant candidates and recipients. MATERIAL AND METHODS: Relevant publications were identified through Medline (http://www.ncbi.nlm.nih.gov) and Embase (http://www.embase.com) database using the following keywords, alone or in association: "transplantation", "prostate hyperplasia", "transurethral resection of prostate", "urinary incontinence", "LUTS", "pelvic floor dysfunction"...
October 7, 2016: Progrès en Urologie
https://www.readbyqxmd.com/read/27687055/dapoxetine-attenuates-testosterone-induced-prostatic-hyperplasia-in-rats-by-the-regulation-of-inflammatory-and-apoptotic-proteins
#15
Rabab H Sayed, Muhammed A Saad, Ayman E El-Sahar
Serotonin level plays a role in suppressing the pathological findings of benign prostatic hyperplasia (BPH). Thus a new selective serotonin reuptake inhibitor, dapoxetine was used to test its ability to ameliorate the pathological changes in the rat prostate. A dose response curve was constructed between the dose of dapoxetine and prostate weight as well as relative prostate weight, then a 5mg/kg dose was used as a representative dose for dapoxetine administration. Rats were divided into four groups; the control group that received the vehicle; the BPH-induced group received daily s...
September 27, 2016: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/27672412/adverse-effects-and-safety-of-5-alpha-reductase-inhibitors-finasteride-dutasteride-a-systematic-review
#16
REVIEW
Jason M Hirshburg, Petra A Kelsey, Chelsea A Therrien, A Carlo Gavino, Jason S Reichenberg
Finasteride and dutasteride, both 5-alpha reductase inhibitors, are considered first-line treatment for androgenetic hair loss in men and used increasingly in women. In each case, patients are expected to take the medications indefinitely despite the lack of research regarding long-term adverse effects. Concerns regarding the adverse effects of these medications has led the United States National Institutes of Health to add a link for post-finasteride syndrome to its Genetic and Rare Disease Information Center...
July 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/27668569/comparing-clinical-and-economic-outcomes-associated-with-early-initiation-of-combination-therapy-of-an-alpha-blocker-and-dutasteride-or-finasteride-in-men-with-benign-prostatic-hyperplasia-in-the-united-states
#17
Maral DerSarkissian, Yongling Xiao, Mei Sheng Duh, Patrick Lefebvre, Andrine R Swensen, Christopher F Bell
BACKGROUND: Benign prostatic hyperplasia (BPH) is a common disease in men that is characterized by lower urinary tract symptoms. Pharmacologic treatment with alpha blockers (ABs) and 5-alpha reductase inhibitors (5ARIs) is recommended to alleviate symptoms, prevent disease progression that can lead to complications, and reduce health care costs. OBJECTIVE: To compare clinical, economic, and health care resource utilization outcomes among BPH patients treated with early continuous combination AB and 5ARI therapy (dutasteride vs...
October 2016: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/27662439/characteristics-of-men-who-report-persistent-sexual-symptoms-after-finasteride-use-for-hair-loss
#18
Shehzad Basaria, Ravi Jasuja, Grace Huang, Whitney Wharton, Hong Pan, Karol Pencina, Zhuoying Li, Thomas G Travison, Jag Bhawan, Renaud Gonthier, Fernand Labrie, Alain Y Dury, Carlo Serra, Allen Papazian, Michael O'Leary, Sami Amr, Thomas W Storer, Emily Stern, Shalender Bhasin
CONTEXT: Some men who use finasteride for hair loss report persistent sexual and other symptoms after discontinuing finasteride therapy. OBJECTIVE: To determine whether these persistent symptoms after discontinuation of finasteride use are due to androgen deficiency, decreased peripheral androgen action, or persistent inhibition of steroid 5α-reductase (SRD5A) enzymes. PARTICIPANTS: Finasteride-users, who reported persistent sexual symptoms after discontinuing finasteride (group 1); age-matched finasteride-users who did not report sexual symptoms (group 2); and healthy men who had never used finasteride (group 3)...
September 23, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27659058/risk-of-erectile-dysfunction-associated-with-use-of-5-%C3%AE-reductase-inhibitors-for-benign-prostatic-hyperplasia-or-alopecia-population-based-studies-using-the-clinical-practice-research-datalink
#19
Katrina Wilcox Hagberg, Hozefa A Divan, Rebecca Persson, J Curtis Nickel, Susan S Jick
OBJECTIVE:  To estimate the risk of erectile dysfunction in men who used 5-α reductase inhibitors to treat benign prostatic hyperplasia or alopecia. DESIGN:  Cohort studies with nested case-control analyses. SETTING:  UK Clinical Practice Research Datalink. POPULATION:  Two populations of men free of risk factors for erectile dysfunction and other sexual dysfunction or its treatment: men aged 40 or more with benign prostatic hyperplasia who received a prescription for a 5-α reductase inhibitor (finasteride or dutasteride) or α blocker, or both, and men aged 18-59 with alopecia...
September 22, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27644029/persistent-sexual-dysfunction-with-finasteride-1%C3%A2-mg-taken-for-hair-loss
#20
Michael Guo, Balraj Heran, Ryan Flannigan, Abbas Kezouh, Mahyar Etminan
PURPOSE: To examine the risk of persistent sexual dysfunction (PSD) with finasteride 1 mg. METHODS: We conducted a retrospective cohort study using the IMS U.S. health claims database. From an original cohort of 6,110,723 patients, we identified 1390 men who had stopped using finasteride 1 mg and 20,000 randomly selected age- and calendar time-matched users of omeprazole from 2006 to 2014. First PSD event was defined as (1) the first PSD diagnosis through the first International Classification for Diseases, Ninth Revision, Clinical Modification) code for sexual dysfunction and (2) use of a phosphodiesterase inhibitor (sildenafil, tadalafil, or vardenafil)...
September 19, 2016: Pharmacotherapy
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