期刊
NITRIC OXIDE-BIOLOGY AND CHEMISTRY
卷 61, 期 -, 页码 1-9出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.niox.2016.09.009
关键词
Meta-analysis; Nitric oxide levels and diabetes mellitus
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [482525/2013-4]
- Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul [1928-2551/13-2]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior
- Fundo de Incentivo a Pesquisa e Eventos (FIPE) at Hospital de Clinicas de Porto Alegre [FIPE-14-0213]
- CNPq
Background: Altered serum nitric oxide (NO) levels in patients with diabetes mellitus (DM) have been reported by different studies; however, results are still controversial. Until this date, no meta-analysis evaluated the association of NO levels with DM. Thus, this paper describes a meta-analysis conducted to evaluate if there is a relationship between NO levels and type 1 DM (T1 DM) or type 2 DM (T2DM). Methods: A literature search was done to identify all studies that investigated NO levels between T1DM or T2DM patients (cases) and non-diabetic subjects (controls). Measurement of nitrate and nitrite (NOx - the stable NO products) were used to estimate NO concentrations because they closely reflect NO bioavailability. Weighted mean differences (WMD) of NOx levels between case and control samples were calculated for T1DM and T2DM groups. Results: Thirty studies were eligible for inclusion in the meta-analysis (8 in TIDM samples and 22 in T2DM samples). NOx levels were increased in European T1DM patients compared with controls [random effect model (REM) WMD = 8.55, 95% CI 2.88 - 14.21]. No other ethnicity was evaluated in TIDM studies. NOx levels were also increased in both European (REM WMD = 18.76, 95% CI 1.67 - 35.85) and Asian (REM WMD = 18.41, 95% CI 8.01 - 28.81) T2DM patients, but not in Latin American patients compared with controls. Conclusions: This meta-analysis detected a significant increase in NOx levels in European T1 DM patients as well as European and Asian T2DM patients. Further studies in other ethnicities are necessary to confirm these data. (C) 2016 Elsevier Inc. All rights reserved.
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