Zobrazeno 1 - 10
of 15
pro vyhledávání: '"W. J. Hayward Vermaak"'
Autor:
Megan Jean Bester, Johan B. Ubbink, Rhena Delport, Reiner Riezler, W. J. Hayward Vermaak, Piet J. Becker
Publikováno v:
Clinica Chimica Acta. 330:111-119
Background: Numerous variations of the methionine load test are frequently used as dynamic function tests to assess homocysteine metabolism. Lack of standardization impedes inter-laboratory comparisons. Criteria based on biological variation are sugg
Publikováno v:
Clinical Chemistry. 46:1085-1090
Background: Screening for diabetes and hypercholesterolemia is widely advocated, and extra-laboratory testing could play a major role in cost-effective population screening. We wished to assess the analytical quality and interchangeability of capilla
Publikováno v:
Metabolism. 49:1092-1096
The cosupplementation of magnesium with calcium has been suggested to be beneficial in the prevention of osteoporosis. We investigated the effect of magnesium supplementation on parameters of bone resorption and fractional 45Ca absorption. Twenty app
Publikováno v:
Clinical Chemistry. 45:670-675
Background: Various methods are available to measure plasma total homocyst(e)ine (tHcy) concentrations, but whether plasma tHcy assays may be used interchangeably is not known. Methods: Results from three different methods [HPLC with fluorescence det
Publikováno v:
Europe PubMed Central
To evaluate hyperhomocysteinemia as a possible coronary heart disease risk factor, the South African black population as example of a population with a low coronary heart disease prevalence was investigated and compared with a population prone to cor
Publikováno v:
Clinica Chimica Acta. 207:119-128
The stability of homocysteine in whole blood and plasma was investigated. Total homocysteine concentrations in whole blood increased rapidly to values in excess of 180% of the basal concentration if whole blood was left at ambient temperature. Sodium
Publikováno v:
Journal of Chromatography B: Biomedical Sciences and Applications. 576:95-101
A highly selective high-performance liquid chromatographic method for the quantification of human erythrocyte S-adenosyl-L-methionine levels is described. A strong cation-exchange sorbent with propylsulphonic acid functional groups was used to extrac
Publikováno v:
Journal of Chromatography B: Biomedical Sciences and Applications. 565:441-446
A rapid, isocratic high-performance liquid chromatographic (HPLC) method is described for the determination of total homocysteine levels in human serum. Prior to reversed-phase HPLC analysis, the serum thiols were derivatized with SBD-F (ammonium 7-f
Publikováno v:
Annals of the New York Academy of Sciences. 585:285-294
Asthma can be broadly defined as enhanced reactivity of the airways to specific and nonspecific stimuli, resulting in diffuse airways obstruction with clinical symptoms like dyspnea, cough, and a tight chest. Stimuli that may provoke asthmatic respon
Autor:
Charlotte L, Scholtz, Hein J, Odendaal, Rochelle, Thiart, Lynzie, Loubser, Renate, Hillermann, Rhena, Delport, W J Hayward, Vermaak, Maritha J, Kotze
Publikováno v:
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde. 92(6)
The frequencies of mutations 677C--T and 1298A--C in the methylenetetrahydrofolate reductase (MTHFR) gene, previously shown to be associated with decreased enzyme activity that may lead to hyperhomocysteinaemia and consequently increased risk of card