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Academic literature on the topic 'Ossido nitrico sintasi endoteliale'
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Journal articles on the topic "Ossido nitrico sintasi endoteliale"
Raddino, Riccardo, Angelica Cersosimo, Alfio Ernesto Bianchi, and Antonio Maggi. "Effetti della malattia tiroidea sul sistema cardiovascolare." CARDIOLOGIA AMBULATORIALE 30, no. 2 (October 14, 2021): 115–22. http://dx.doi.org/10.17473/1971-6818-2021-2-4.
Full textDissertations / Theses on the topic "Ossido nitrico sintasi endoteliale"
delli, Muti Nicola. "I Polimorfismi del gene Recettore degli Androgeni e del gene della Ossido Nitrico Sintetasi Endoteliale: Applicazioni in Andrologia." Doctoral thesis, Università Politecnica delle Marche, 2015. http://hdl.handle.net/11566/243034.
Full textMany studies have shown conflicting associations between CAG polymorphism of the androgen receptor gene (AR), the endothelial nitric oxide synthase gene (eNOS) variant Glu298Asp and male reproductive system diseases. In order to understand the role played by the two gene variants, were performed two types of studies. In the first study, we evaluated the possible influence of variant Glu298Asp on the onset of hypogonadism-associated type 2 diabetes mellitus (T2DM). We have analyzed the three genetic variants resulting by Glu298Asp eNOS gene transversion (eNOSGG, eNOSGT, eNOSTT) in 110 subjects affected by late-onset hypogonadism. Any difference was detected for age, BMI and total testosterone. By contrast, the genotype eNOSTT showed significantly higher values of glycemia, Hb1Ac and a greater prevalence of T2DM. The logistic regression analysis also showed an evident significant association between the genotype eNOSTT and T2DM. In the second study, we hypothesized that the simultaneous presence of two mutations could affect semen parameters. For this purpose, oligoasthenozoospermic subjects (n = 34) and normospermic subjects (n = 43) were studied. Our results showed no clear association of AR gene polymorphisms and eNOS variant with semen parameters. Conversely, after splitting the sample in the six possible combinations between the two genes, the deterioration of semen parameters in subjects with the simultaneously presence of shorter CAG tract and eNOSTT genotype was evident. In conclusion, our results suggest that the polymorphism AR-CAG and the eNOS gene variant Glu298Asp could represent risk factors in andrology and could be predictive markers of diseases like diabetes mellitus type 2 and male infertility.
VILLA, FRANCESCO. "Identification and characterization of a BPIFB4 functional variant associated with human exceptional longevity." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2015. http://hdl.handle.net/10281/94647.
Full textLong Living Individuals (LLIs) show delay of aging, which is characterized by the progressive loss of cardiovascular homeostasis, along with reduced endothelial nitric oxide synthase (eNOS) activity, endothelial dysfunction and impairment of tissue repair following ischemic injury. In this thesis, I illustrate a genetic analysis of LLIs to reveal master molecular regulators of physiologic aging and new targets for treatment of cardiovascular disease. I show that the polymorphic variant rs2070325 (Ile229Val) in bactericidal/permeability-increasing fold-containing-family-B-member-4 (BPIFB4) associates with exceptional longevity, under a recessive genetic model, in three independent populations. Moreover, the expression of BPIFB4 is instrumental to maintenance of cellular and vascular homeostasis through regulation of protein synthesis. BPIFB4 phosphorylation and activation by protein-kinase-R (PKR)-like endoplasmic reticulum kinase (PERK) induces its complexing with 14-3-3 and heat-shock-protein 90 (HSP90), which is facilitated by the longevity-associated variant (LAV-BPIFB4). In isolated vessels, BPIFB4 is up-regulated by mechanical stress, and its knock-down inhibits endothelium-dependent vasorelaxation. In hypertensive rats and as well as old mice, gene transfer of LAV-BPIFB4 restores eNOS signaling, rescues endothelial dysfunction, and reduces blood pressure levels. Furthermore, BPIFB4 is implicated in vascular repair. BPIFB4 is abundantly expressed in circulating CD34+ cells of LLIs, and its knock-down in endothelial progenitor cells precludes their capacity to migrate toward the chemoattractant SDF-1. In a murine model of peripheral ischemia, systemic gene therapy with LAV-BPIFB4 promotes the recruitment of hematopoietic stem cells, reparative vascularization, and reperfusion of the ischemic muscle. LAV-BPIFB4 may represent a novel therapeutic tool to fight endothelial dysfunction and promote vascular reparative processes.
FRAZZITTA, Anna. "STUDIO DEL MECCANISMO ERIPTOTICO DI OSSISTEROLI." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/394973.
Full textSABBATINELLI, JACOPO. "Impatto della supplementazione con Ubiquinolo sulla funzione endoteliale in soggetti a rischio di sviluppare patologie cardiovascolari: studio clinico spontaneo, in doppio cieco, randomizzato, controllato con placebo, a gruppi paralleli." Doctoral thesis, Università Politecnica delle Marche, 2018. http://hdl.handle.net/11566/252542.
Full textMost of the major cardiovascular risk factors are characterized by an increased production of reactive oxygen species (ROS), leading to endothelial dysfunction through breakdown of the vasodilating compound nitric oxide (NO). Supplementation with Coenzyme Q10 (CoQ10) positively affects heart performance in congestive heart failure and ischemic heart disease, along with a significant blood pressure lowering effect. To understand the effects of ubiquinol supplementation on endothelial function, measured through non-invasive ultrasonographic assessment of flow-mediated dilation (FMD), a double-blind, randomized, parallel-groups clinical trial was carried out on 51 subjects with moderate cardiovascular risk and endothelial dysfunction. Subjects were randomized to receive ubiquinol, 100 or 200 mg daily, or placebo. During each visit (T0, 4-weeks, 8-weeks) blood pressure, FMD, hematologic parameters (including lipid profile), reduced/oxidized CoQ10 levels, NO and peroxynitrite plasma levels were evaluated. Ubiquinol administration strongly improved total and reduced CoQ10 plasma levels. Subjects assigned to both treatment groups showed an increased FMD compared with subjects in placebo group, with no significant difference between the two dosages. However, after CoQ10 plasma bioavailability analysis, a positive relationship between FMD increases and CoQ10 oxidative status improvements was demonstrated. No significant change in lipid profile was observed in treated subjects. A significant dose-dependent increase in NO plasma levels was observed in treated subjects after T2. NO plasma levels are positively related to FMD and, thus, to endothelial function. FMD and plasma oxidative status are significantly improved following administration of ubiquinol. Bioavailability of ubiquinol is positively correlated with FMD improvements. Positive influence of CoQ10 supplementation is independent from plasma lipid profile, suggesting a direct effect of ubiquinol on endothelial cells.