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Acute electroretinographic changes during sildenafil (Viagra) treatment for erectile dysfunction. 2003

Corrado Balacco Gabrieli, and Federico Regine, and Enzo M Vingolo, and Edoardo Rispoli, and Aldo Isidori
Department of Ophthalmology, University of Rome La Sapienza, Rome, Italy. corrado.balacco@uniroma1.it

The authors describe their findings on 12 subjects who were treated with 50 mg of sildenafil (Viagra) and underwent ERG measurements prior to and 1 hour after ingestion. The Naka-Rushton equation was used to describe the b-wave luminance-response function of the scotopic ERG. Statistically significant differences were noted in the Vmax and K values. Sildenafil ingestion resulted in an increase in Vmax (higher rod response to light stimuli) and a decrease in K (higher sensitivity).

UI MeSH Term Description Entries
D007172 Erectile Dysfunction The inability in the male to have a PENILE ERECTION due to psychological or organ dysfunction. Impotence,Male Impotence,Male Sexual Impotence,Dysfunction, Erectile,Impotence, Male,Impotence, Male Sexual,Sexual Impotence, Male
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010726 Phosphodiesterase Inhibitors Compounds which inhibit or antagonize the biosynthesis or actions of phosphodiesterases. Phosphodiesterase Antagonists,Phosphodiesterase Inhibitor,Phosphoric Diester Hydrolase Inhibitors,Antiphosphodiesterases,Inhibitor, Phosphodiesterase
D010879 Piperazines Compounds that are derived from PIPERAZINE.
D011687 Purines A series of heterocyclic compounds that are variously substituted in nature and are known also as purine bases. They include ADENINE and GUANINE, constituents of nucleic acids, as well as many alkaloids such as CAFFEINE and THEOPHYLLINE. Uric acid is the metabolic end product of purine metabolism.
D012160 Retina The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent. Ora Serrata
D004596 Electroretinography Recording of electric potentials in the retina after stimulation by light. Electroretinographies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000068677 Sildenafil Citrate A PHOSPHODIESTERASE TYPE-5 INHIBITOR; VASODILATOR AGENT and UROLOGICAL AGENT that is used in the treatment of ERECTILE DYSFUNCTION and PRIMARY PULMONARY HYPERTENSION. 1-((3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo(4,3-d)pyrimidin-5-yl)-4-ethoxyphenyl)sulfonyl)-4-methylpiperazine citrate,Acetildenafil,Desmethyl Sildenafil,Desmethylsildenafil,Homosildenafil,Hydroxyhomosildenafil,NCX-911,Revatio,Sildenafil,Sildenafil Lactate,Sildenafil Nitrate,UK 92480-10,UK-92,480-10,Viagra,Citrate, Sildenafil,Lactate, Sildenafil,NCX 911,NCX911,Nitrate, Sildenafil,Sildenafil, Desmethyl,UK 92,480 10,UK 92480 10,UK 9248010

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