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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Association Between Hematological Parameters and Iron Metabolism Response After Marathon Race and ACTN3 Genotype

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Renno Sierra, Ana Paula [1, 2] ; Oliveira, Rodrigo Assuncao [3] ; Silva, Elton Dias [4] ; Oliveira Lima, Giscard Humberto [4, 5] ; Benettil, Marino Pereira [2] ; Pedanti Kiss, Maria Augusta [2] ; Sierra, Carlos Anibal [1] ; Ghorayeb, Nabil [1] ; Seto, Jane T. [6] ; Pesquero, Joao Bosco [4] ; Cury-Boaventura, Maria Fernanda [3]
Total Authors: 11
[1] Dante Pazzanese Inst Cardiol, Sports Cardiol Dept, Sao Paulo - Brazil
[2] Univ Sao Paulo, Sch Phys Educ & Sports, Dept Biodynam Human Movements, Sao Paulo - Brazil
[3] Cruzeiro do Sul Univ, Dept Interdisciplinary Hlth Sci, Inst Phys Act & Sports Sci, Sao Paulo - Brazil
[4] Univ Fed Sao Paulo, Dept Biophys, Sao Paulo - Brazil
[5] Univ Rome Foro Italico, Dept Movement Human & Hlth Sci, Program Human Movement & Sport Sci, Rome - Italy
[6] Murdoch Childrens Res Inst, Neuromuscular Res, Melbourne, Vic - Australia
Total Affiliations: 6
Document type: Journal article
Source: FRONTIERS IN PHYSIOLOGY; v. 10, JUN 11 2019.
Web of Science Citations: 0

alpha-Actinin-3 (ACTN3 R577X, rs.1815739) polymorphism is a genetic variation that shows the most consistent influence on metabolic pathway and muscle phenotype. XX genotype is associated with higher metabolic efficiency of skeletal muscle; however, the role of ACTN3 polymorphism in oxygen transport and utilization system has not yet been investigated. Therefore, the aim of this study was to determine the influence of ACTN3 polymorphisms on hematological and iron metabolism response induced by marathon race. Eighty-one Brazilian amateur male endurance runners participated in the study. Blood samples and urine were collected before; immediately after; and 1, 3, and 15 days after the marathon race. Urine, hematological parameters, iron metabolism, and ACTN3 genotyping analyses were performed. The marathon race induced a decrease in erythrocytes, Hb, and Ht, and an increase in hematuria, creatinine, myoglobin, red cell distribution width, mean corpuscular hemoglobin concentration, mean corpuscular hemoglobin, direct and indirect bilirubin and erythropoietin. Moreover, an elevation immediately or 1 day after the marathon race follows a reduction 3 or 15 days after the marathon race were observed on transferrin saturation and iron and transferrin levels. Hematological parameters and iron metabolism changes induced by marathon race were not observed in XX genotypes. Hematuria and decreased erythrocytes, Hb, Ht, and iron and transferrin levels were observed only in RR and/or RX genotypes but not in XX genotypes. The percentage of runners with hematuria, leukocyturia, iron deficiency, creatinine, myoglobin, and bilirubin imbalance was higher in RR compared to XX genotypes. ACTN3 polymorphism is associated with iron metabolism and hematological responses after endurance exercise. Despite these results being based on a small sample, they highlight a protective role of the XX genotype on hematological and renal changes induced by long-distance exercise. Therefore, these findings should be further replicated. (AU)

FAPESP's process: 14/21501-0 - Role of genotypes, miocardial injury and inflammatory markers on cardiopulmonar changes induced by marathon race
Grantee:Maria Fernanda Cury Boaventura
Support type: Regular Research Grants
FAPESP's process: 14/27198-8 - Establishment of a center of genetic and molecular research for clinical challenges
Grantee:João Bosco Pesquero
Support type: Research Projects - Thematic Grants