Background: Homocysteine (Hcy) has been associated with an adverse cardiovascular risk profile in adolescents. Assessment of the association between plasma Hcy levels and clinical/laboratory factors might improve our understanding of the pathogenesis of cardiovascular disease.
Methods: Hcy was measured in 1,900 14- to 19-year-old participants of prospective population-based EVA-TYROL Study (44.3% males, mean age 16.4 years) between 2015 and 2018. Factors associated with Hcy were assessed by physical examination, standardized interviews, and fasting blood analysis.
Results: Mean plasma Hcy was 11.3 ± 4.5 µmol/L. Distribution of Hcy was characterized by extreme right skew. Males exhibited higher Hcy and sex differences increased with increasing age. Univariate associations with Hcy emerged for age, sex, body mass index, high-density lipoprotein cholesterol, and for factors pertaining to blood pressure, glucose metabolism, renal function, and diet quality, whereas the most important multivariate predictors of Hcy were sex and creatinine.
Discussion: Clinical and laboratory factors associated with Hcy in adolescents were manifold, with sex and high creatinine identified as strongest independent determinants. These results may aid when interpreting future studies investigating the vascular risk of homocysteine.
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http://dx.doi.org/10.3389/fcvm.2023.1140990 | DOI Listing |
Alzheimers Dement
December 2024
Alzheimer's Center at Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
Background: Brain endothelial cell (EC) stress, including that induced by vascular amyloid β (Aβ) deposits in cerebral amyloid angiopathy (CAA) and Alzheimer's disease (AD), contributes to cerebral blood flow impairment, blood brain barrier (BBB) damage, neurovascular unit dysfunction, microhemorrhages and hypoperfusion, precipitating neurodegeneration and neuroinflammation processes. Epidemiological and experimental evidence suggests that hyperhomocysteinemia (Hhcy) contributes to increasing AD risk as well as CAA pathology. However, the cellular and molecular mechanisms through which Aβ and Hhcy drive EC and BBB dysfunction, whether the molecular effects of these challenges are additive or independent, and possible therapeutic strategies, remain to be determined.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Alzheimer's Center at Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
J Assist Reprod Genet
January 2025
Laboratoire Clément, Avenue d'Eylau, 75016, Paris, France.
A couple presenting with more than 3 years' history of infertility and three miscarriages was tested for serum homocysteine levels and for the two principal MTHFR SNPs: 677C < T and 1298A < C, as per our general policy for patients with infertility of long duration. The woman was found to be wild type for both MTHFR SNPs with a serum homocysteine 10.5 µM, slightly higher than our accepted normal value of 8.
View Article and Find Full Text PDFZhongguo Shi Yan Xue Ye Xue Za Zhi
December 2024
Department of Clinical Laboratory, Suqian First People's Hospital, Suqian 223800, Jiangsu Province, China.
Objective: To analyze the prognostic value and threshold effect of serum C3, C4 in patients with multiple myeloma (MM).
Methods: The clinical data of 146 patients with MM who visited Suqian First People's Hospital from October 2016 to October 2019 were collected. The patients were divided into deceased group (42 cases) and survival group (104 cases) according to their prognosis and survival.
Anal Chem
January 2025
College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
Discerning and quantifying the critical biothiols cysteine (Cys), homocysteine (Hcy), and glutathione (GSH) are vital for understanding their synergistic roles in biological systems. In this study, we synthesized a series of phenylethynylcoumarin fluorescent probes with varied structures to investigate the mechanisms underlying biothiol detection. We found that different substituents (-OCH, -H, -CN) at the -position of the phenylacetylene, combined with an aldehyde group at the 3-position of the coumarin, significantly affected the probes' reactivity and produced distinct response patterns toward biothiols.
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