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dc.contributor.authorMels, Catharina M.C.
dc.contributor.authorLoots, Ilisma
dc.contributor.authorSchutte, Aletta E.
dc.contributor.authorSchwedhelm, Edzard
dc.contributor.authorAtzler, Dorothee
dc.contributor.authorBöger, Rainer H.
dc.identifier.citationMels, C.M.C. et al. 2016. Nitric oxide synthesis capacity, ambulatory blood pressure and end organ damage in a black and white population: the SABPA study. Amino acids, 48(3):801-810. [http;//]
dc.identifier.issn1438-2199 (Online)
dc.description.abstractNitric oxide (NO) synthesis capacity is determined by the availability of substrate(s) such as l-arginine and the influence of nitric oxide synthase (NOS) inhibitors, asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA). These factors may be important in black South Africans with a very high prevalence of hypertension. We compared ambulatory blood pressure (BP), markers of end organ damage and NO synthesis capacity markers [l-arginine, l-homoarginine, l-citrulline, l-arginine:ADMA, ADMA, SDMA and dimethylarginine (DMA)], between black and white teachers (n = 390). Associations of nighttime BP and markers of end organ damage with NO synthesis capacity markers were also investigated. Although black men and women had higher BP and albumin-to-creatinine ratio (ACR) (all p < 0.001), they also had higher l-arginine, l-homoarginine, l-arginine:ADMA and lower SDMA and DMA levels (all p < 0.05). Only in white men ADMA concentrations associated positively with nighttime systolic blood pressure (R2 = 0.20, β = 0.26, p = 0.009), nighttime diastolic blood pressure (R2 = 0.23, β = 0.27, p = 0.007), carotid intima media thickness (cIMT) (R2 = 0.36, β = 0.22, p = 0.008) and ACR (R2 = 0.14, β = 0.32, p = 0.001). Our findings suggest that despite an adverse cardiovascular profile in blacks, their NO synthesis capacity profile seems favourable, and that other factors, such as NO inactivation, may prove to be more important
dc.subjectNighttime blood pressure
dc.subjectCarotid intima media thickness
dc.subjectEndothelial function
dc.subjectUrinary albuminto-creatinine ratio
dc.subjectEstimated glomerular filtration rate
dc.subjectRenal function
dc.titleNitric oxide synthesis capacity, ambulatory blood pressure and end organ damage in a black and white population: the SABPA study
dc.contributor.researchID21174180 - Loots, Ilisma
dc.contributor.researchID12076341 - Mels, Catharina Martha Cornelia
dc.contributor.researchID10922180 - Schutte, Aletta Elisabeth

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