ArticlePloS one2016
Sympathetic Hyperactivity, Increased Tyrosine Hydroxylase and Exaggerated Corpus Cavernosum Relaxations Associated with Oxidative Stress Plays a Major Role in the Penis Dysfunction in Townes Sickle Cell Mouse.
Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed, 28 citations in OpenAlex.
- Heme reduces corpus cavernosum smooth muscle contraction via the HO-CO-sGC-cGMP pathway: implications for priapism in sickle cell disease.International journal of impotence research · 2026Article
- Sympathetic hypoactivity leads to hypocontractility of the corpus cavernosum in sickle cell mice: a mechanism contributing to priapism.International journal of impotence research · 2026Article
- Update on the prevalence and pathophysiology of sickle cell priapism: a narrative review.International journal of impotence research · 2026Review
- Response to Comment on: Heme reduces corpus cavernosum smooth muscle contraction via the HO-CO-sGC-cGMP pathway: implications for priapism in sickle cell disease.International journal of impotence research · 2026Article
- Advances in immune-inflammatory interactions within the testicular-penile microenvironment of varicocele patients: molecular mechanisms underlying erectile dysfunction and spermatogenic impairment.Frontiers in endocrinology · 2026Review
- Resveratrol and Its Nitric Oxide-Donor Hybrid as an Emerging Therapy for Oxidative-Stress-Driven Priapism in Sickle Cell Disease.Antioxidants (Basel, Switzerland) · 2025Review
- Bladder Dysfunction in Sickle Cell Disease Is Associated with Inflammation and Oxidative Stress.International journal of molecular sciences · 2025Article
- Exploring the link between comorbid insomnia and sleep apnea (COMISA) and erectile dysfunction: implications for male sexual health.Sexual medicine reviews · 2025Review
- Resveratrol attenuates the priapism phenotype in sickle cell mice by restoring NO-cGMP-PDE5 signaling and reducing NADPH oxidase 2 expression.Frontiers in pharmacology · 2025Article
- The endocannabinoid system's genetic polymorphisms in sickle cell anemia patients.Scientific reports · 2024Article
- Carvacrol prevents D-( +)-galactose-induced aging-associated erectile dysfunction by improving endothelial dysfunction and oxidative stress in rats.Naunyn-Schmiedeberg's archives of pharmacology · 2024Article
- Soluble guanylate cyclase stimulators and activators: new horizons in the treatment of priapism associated with sickle cell disease.Frontiers in pharmacology · 2024Review
- Targeting heme in sickle cell disease: new perspectives on priapism treatment.Frontiers in physiology · 2024Review
- Article
- Resveratrol-nitric oxide donor hybrid effect on priapism in sickle cell and nitric oxide-deficient mouse.PloS one · 2022Article
- Haptoglobin treatment contributes to regulating nitric oxide signal and reduces oxidative stress in the penis: A preventive treatment for priapism in sickle cell disease.Frontiers in physiology · 2022Article
- TSPO ligand FGIN-1-27 controls priapism in sickle cell mice via endogenous testosterone production.Journal of cellular physiology · 2021Article
- Article
- Resolution of Acute Priapism in Two Children With Sickle Cell Disease Who Received Nitrous Oxide.Academic emergency medicine : official journal of the Society for Academic Emergency Medicine · 2019Article
- A novel experimental model of erectile dysfunction in rats with heart failure using volume overload.PloS one · 2017Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSickle cell disease patients display priapism that may progress to erectile dysfunction. However, little is known about the pathophysiological alterations of corpus cavernosum in sickle cell disease.
objectiveThus, this study aimed to evaluate the functional and molecular alterations of sympathetic machinery and nitric oxide-cyclic guanosine monophosphate signaling pathway in Townes transgenic sickle cell disease mice.
methodsConcentration-response curves to contractile (phenylephrine) and relaxant agents (acetylcholine and sodium nitroprusside) were obtained in corpus cavernosum strips from sickle and C57BL/6 (control) mice. Neurogenic contractions and nitrergic relaxations were obtained using electrical-field stimulation. Measurements of endothelial nitric oxide synthase (eNOS), neuronal nitric oxide synthase (nNOS), phosphodiesterase-5 (PDE5) and α1A-, α1B- and α1D-adrenoceptor mRNA expressions and reactive-oxygen species were performed. Tyrosine hydroxylase phosphorylated at Ser-31 and total tyrosine hydroxylase protein expressions in cavernosal tissues were also measured.
resultsThe neurogenic contractions were higher in the sickle cell disease group, in association with elevated tyrosine hydroxylase phosphorylated at Ser-31 and total tyrosine hydroxylase protein expression, as well as increased tyrosine hydroxylase mRNA expression. Likewise, phenylephrine-induced contractions were greater in the sickle mice, whereas α1A-, α1B- and α1D-adrenoceptor mRNA expression remained unchanged. Cavernosal relaxations to acetylcholine, sodium nitroprusside and EFS were higher in sickle mice, accompanied by decreased eNOS and nNOS, along with lower PDE5 mRNA expression. An increase of about 40% in reactive-oxygen species generation in corpus cavernosum from sickle mice was also detected.
conclusionOur study shows that decreased nitric oxide bioavailability in erectile tissue due to increased oxidative stress leads to both sympathetic hyperactivity and dysregulation of nitric oxide signaling in corpus cavernosum from Townes sickle mice.
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