Literature DB >> 28700017

Plasma Total Antioxidant Capacity and Cardiometabolic Risk in Non-Obese and Clinically Healthy Young Adults.

Jamille Oliveira Costa1, Cecília M Passos Vásquez1, Gleiciane de Jesus Santana1, Natanael de Jesus Silva1, Juciene de Matos Braz1, Amélia M Ribeiro de Jesus1, Danielle Góes da Silva1, Luana Celina Seraphim Cunha1, Kiriaque Barra Ferreira Barbosa1.   

Abstract

BACKGROUND: : The oxidative biomarkers play an important role in the genesis of cardiometabolic risk-related processes.
OBJECTIVE: : To investigate the total antioxidant capacity of plasma and its association with cardiometabolic risk in non-obese and clinically healthy young adults.
METHODS: : University students of the state of Sergipe, Brazil, aged between 18 and 25 years, were recruited for this study from May of 2013 and October of 2014. Anthropometric, clinical and biochemical parameters were measured and analyzed using protocols which were previously standardized and described in the literature. The measurement of plasma total antioxidant capacity was based on the ability that all the antioxidants present in the sample (plasma) have to inhibit the oxidation of the oxidizable substrate ABTS (2,2`- Azino-di-[3-ethylbenzthiazoline sulphonate]) to ABTS•+ by metmyoglobin.
RESULTS: : Approximately 25% of the sample presented more than one component of cardiometabolic risk. Low HDL-cholesterol was the most prevalent component. Compared to absence of components, the subjects with at least one component presented greater body weight and waist circumference, higher levels of diastolic blood pressure and fasting glucose, greater total cholesterol/HDL-c ratio, and lower levels of HDL-c (p < 0.05). Fasting glycemia was the only parameter which was associated with total antioxidant capacity (R2 = 0.10; β = 0.17; p = 0.001).
CONCLUSIONS: : The plasma total antioxidant capacity was not able to predict the cardiometabolic risk components due possibly to the establishment of compensatory mechanisms that become activated in physiological conditions. FUNDAMENTOS:: Os biomarcadores oxidativos exercem um importante papel na gênese dos processos relacionados ao risco cardiometabólico. OBJETIVO:: Investigar a capacidade antioxidante total do plasma e sua associação com risco cardiometabólico em adultos jovens, não obesos e clinicamente saudáveis. MÉTODOS:: Estudantes universitários do estado de Sergipe, Brasil, com idade entre 18 e 25 anos, foram recrutados entre maio de 2013 e outubro de 2014. Parâmetros antropométricos, clínicos e bioquímicos foram medidos e analisados usando protocolos previamente padronizados e descritos na literatura. A medida da capacidade antioxidante total do plasma baseou-se na capacidade de todos os antioxidantes presentes na amostra (plasma) em inibir a oxidação do substrato oxidável ABTS (2,2-Azino-bis-(3-etilbenzotiazolina-6-sulfonato) a ABTS•+ pela metamioglobina. RESULTADOS:: Aproximadamente 25% da amostra apresentaram mais de um componente do risco cardiometabólico. Valores baixos de HDL foram o componente mais prevalente. Em comparação à ausência de componentes, os indivíduos com pelo menos um componente apresentou valores mais altos de peso corporal, circunferência da cintura, pressão sanguínea diastólica, glicemia de jejum e razão colesterol total/HDL-c, e valores mais baixos de HDL-c (p < 0,05). A glicemia de jejum foi o único parâmetro que se associou com a capacidade antioxidante total (R2 = 0,10; β = 0,17; p = 0,001). CONCLUSÕES:: A capacidade antioxidante total não foi capaz de predizer os componentes do risco cardiometabólico possivelmente devido ao estabelecimento de mecanismos compensatórios que se tornam ativados em condições fisiológicas.

Entities:  

Year:  2017        PMID: 28700017      PMCID: PMC5576118          DOI: 10.5935/abc.20170095

Source DB:  PubMed          Journal:  Arq Bras Cardiol        ISSN: 0066-782X            Impact factor:   2.000


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