Introduction: Efforts to identify the health risk associations for priapism may reveal pathophysiologic mechanisms for the disorder and suggest a scientifically rational approach for correcting it.
Aim: We describe a clinical presentation of idiopathic recurrent priapism in a patient with glucose-6-phosphate dehydrogenase (G6PD) deficiency and consider a possible nitric oxide (NO)-dependent mechanistic basis from which the medical condition causes priapism.
Methods: The case report profiled a 35-year-old African-American man with G6PD deficiency who presented with a rapid progression of recurrent priapism episodes. He was outwardly healthy and did not have sickle cell disease or trait by hematologic screening. His management featured use of a long-term, continuous phosphodiesterase type 5 (PDE5) inhibitor therapeutic regimen.
Main Outcome Measures: Clinical history data and response to PDE5 inhibitor therapy.
Results: After a 3-month duration of PDE5 inhibitor therapy, priapism recurrences were sufficiently resolved and the patient discontinued therapy. At 18-month clinical follow-up, he experienced only minor priapism recurrences and retention of full erectile ability.
Conclusions: G6PD deficiency offers an explanation for idiopathic priapism. The medical condition generates a pathophysiologic milieu consistent with aberrant NO signaling and heightened oxidative stress in the penis.
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http://dx.doi.org/10.1111/j.1743-6109.2007.00631.x | DOI Listing |
Lancet Infect Dis
January 2025
Institut Pasteur, Université Paris Cité, G5 Épidémiologie et Analyse des Maladies Infectieuses, Paris, France. Electronic address:
Background: Plasmodium vivax forms dormant liver stages (hypnozoites) that can reactivate weeks to months after primary infection. Radical cure requires a combination of antimalarial drugs to kill both the blood-stage and liver-stage parasites. Hypnozoiticidal efficacy of the liver-stage drugs primaquine and tafenoquine cannot be estimated directly because hypnozoites are undetectable.
View Article and Find Full Text PDFActa Med Philipp
December 2024
Institute of Human Genetics, National Institutes of Health, University of the Philippines Manila.
Background: As social media continue to grow as popular and convenient tools for acquiring and disseminating health information, the need to investigate its utilization by laypersons encountering common medical issues becomes increasingly essential.
Objectives: This study aimed to analyze the content posted in Facebook groups for Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency and how these engage the members of the group.
Methods: This study employed an inductive content analysis of user-posted content in both public and private Facebook groups catering specifically to G6PD deficiency.
Clin Infect Dis
January 2025
Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, Brazil.
Background: Daily primaquine-induced hemolysis is a common cause of complications during Plasmodium vivax malaria treatment in individuals with glucose 6-phosphate dehydrogenase deficiency (G6PDd). Alternative regimens balancing safety and efficacy are needed.
Methods: G6PDd participants with P.
Cell Rep
January 2025
Department of Molecular and Cellular Biology, The University of Guelph, Guelph ON, Canada; Department of Clinical Neuroscience, University of Calgary, Calgary, AB, Canada. Electronic address:
Loss of dopaminergic neurons in Parkinson's disease (PD) is preceded by loss of synaptic dopamine (DA) and accumulation of proteinaceous aggregates. Linking these deficits is critical to restoring DA signaling in PD. Using murine and human pluripotent stem cell (hPSC) models of PD coupled with human postmortem tissue, we show that accumulation of α-syn micro-aggregates impairs metabolic flux through the pentose phosphate pathway (PPP).
View Article and Find Full Text PDFInt J Neonatal Screen
December 2024
Laboratory of Genomic, Epigenetics, Precision and Predictive Medicine, School of Medicine, Mohammed VI University of Sciences and Health, Casablanca 82403, Morocco.
Unlabelled: Newborn screening (NBS) represents an important public health measure for the early detection of specified disorders; such screening can prevent disability and death, not only from metabolic disorders but also from endocrine, hematologic, immune, and cardiac disorders. Screening for critical congenital conditions affecting newborns' health is a great challenge, especially in developing countries such as Morocco, where NBS program infrastructure is lacking. In addition, the consanguinity rate is high in Morocco.
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