Metabolismo do ferro em equinos atletas

Machado, Luciana Pereira; Kohayagawa, Aguemi; Yonezawa, Letícia Andreza; Silveira, Veridiana Fernandes da; Saito, Mere Erika

doi:10.1590/s0103-84782010005000031

Cited by 8 publications

(9 citation statements)

References 23 publications

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“…The major iron deposits in the body are located in the mononuclear phagocytic system: liver, spleen and bone marrow [ 84 ]. Hepatic iron concentration was lower in the GXT groups (Control and PDX) than in the Sham groups (Control and PDX) ( p < 0.0001).…”

Section: Discussionmentioning

confidence: 99%

Intake of Polydextrose Alters Hematology and the Profile of Short Chain Fatty Acids in Partially Gastrectomized Rats

et al. 2018

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Polydextrose (PDX) ingestion may increase the intestinal absorption of iron. This study evaluated the effects of 7.5% polydextrose supplementation on markers of iron uptake, transport and storage in partially gastrectomized rats. Half of a batch of 40 male Wistar rats (250 g) underwent Billroth II partial gastrectomy with anterior truncal vagotomy (GXT), while the other half underwent sham gastrectomy (SHAM). At 7 postoperative days, the animals were subdivided into four groups (n = 10): Sham Control and GXT Control (no polydextrose); Sham PDX and GXT PDX (with 7.5% PDX). The animals were euthanized after 60 day of PDX treatment. Organ weight, cecal pH, the characterization and quantification of short-chain fatty acids (SCFA), hematological parameters, hepatic iron content and the expression of ferroportin (FPT) in the jejunum, cecum, colon and liver were evaluated. PDX caused changes in the cecum of the supplemented animals, where there was a decrease in pH, increase in cecal wall and marked production of SCFA, especially acetic and propionic acids (p < 0.05). Hepatic iron levels were lower in GXT animals. PDX increased hemoglobin (HGB) values by 29.2% and hematocrit (HCT) by 55.8% in the GXT PDX group compared to the GXT Control group. The GXT PDX group had lower hepatic FPT expression (p < 0.05). PDX led to increased SCFA concentration in the supplemented animals. Considering that SCFAs play a central role in the increasing nutrients uptake, this mechanism may be involved in altering the hematology profile observed in these animals but not enough to reverse iron deficiency anemia in post-gastrectomy rats.

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Section: Discussionmentioning

confidence: 99%

Intake of Polydextrose Alters Hematology and the Profile of Short Chain Fatty Acids in Partially Gastrectomized Rats

et al. 2018

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“…O metabolismo de alguns minerais depende da intensidade e duração do exercício físico (Machado et al 2010). Estudos têm associado a elevação nos níveis de Fe e Cu em equinos da raça PSI (Balarin 2002) e Anatoliano nativo (Yur et al 2008), decorrente do exercício físico.…”

Section: Discussionunclassified

Concentrações de ferro, cobre, zinco e manganês em equinos da raça Puro-sangue Lusitano, antes e após exercício

Minini¹,

Laposy

Bremer‐Neto

et al. 2013

Pesq. Vet. Bras.

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O presente trabalho objetivou determinar a atividade sérica dos microminerais ferro, cobre, zinco e manganês em 30 equinos atletas da raça Puro-sangue Lusitano (PSL), antes e depois de exercícios, atestados por avaliações clínicas e laboratoriais. Amostras de sangue foram colhidas, antes e imediatamente após 20 minutos de exercício físico de trote e galope suaves realizados em pista de areia, para a realização das dosagens dos microminerais. A concentração dos microelementos foi determinada por espectrofotometria de absorção atômica. Observou-se que após o exercício, a atividade sérica de ferro não sofreu variações (P=0,2365), enquanto os valores de cobre se elevaram significativamente após o treinamento (P<0,001). Já o zinco e o manganês diminuíram após o exercício (P<0,001). Pode-se concluir que o exercício físico de curta duração pode gerar sudorese capaz de alterar as concentrações séricas de ferro, cobre, zinco e manganês em cavalos atletas da raça Puro-sangue Lusitano.

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“…When there is a real increase in serum iron, there is a concomitant increase in IST and a reduction in UIBC, which was not observed in the present study, as the IST remained constant. The increase in serum iron without IST alteration suggests a false elevation, which can be explained by hemoconcentration (MACHADO et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

“…Serum iron concentration in horses may be influenced by several factors, including dietary availability and the presence of an inflammatory process that may lead to iron sequestration (ABRAMOVITC; PARRA; FERNANDES, 2014). A more intensive study to evaluate ferritin serum levels could elucidate the iron stores in these animals (MACHADO et al, 2010). UIBC = unsaturated iron binding capacity; TIBC = total iron binding capacity; IST = transferrin saturation index; G1 = Group 1 -local horses that compete sporadically; G2 = Group 2 -athletic horses that were transported.…”

Section: Resultsmentioning

confidence: 99%

Effect of vaquejada exercise on the physiological and biochemical profiles of sporadic competitors and atletic horses

Sousa

Silva

Rêgo

et al. 2018

AVB

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The aim of this study was to analyze the effect of a cycle of three races as a part of the vaquejada test, on the serum biochemistry of horses that compete sporadically and athletic horses. Fourteen Quarter Horses was evaluated: group 1 (G1), with seven horses from the region that competed sporadically and group 2 (G2), with seven horses that competed regulary and were transported for >200 km. The physiological and serum biochemistry parameters were evaluated before exercise (M0) and after a cycle of three races of the vaquejada test: immediately after (M1); 30 min (M2) and 120 min (M3) after. Wilcoxon test was used to assess differences between the groups and Friedman test for moment effects, with a significance level of 5%. There was increase in M1 compared with M0 for heart and respiratory rate in G2, and rectal temperature in G1. The exercise transiently changed most of the biochemical parameters, with significant diferences for uric acid in M1, albumin and lactate in M2, compared with M0, in G2. The metabolic response to exercise was different between the groups for the following variables: uric acid, total protein, albumin, unsaturated iron binding capacity, and transferrin saturation index. It was concluded that physiological and biochemical changes induced by Vaquejada are light, transiente, and within the normal range. The changes were more expressive in athletic horses that compete regularly and are transported, demonstrating the need for studies that establish specific training and management protocols for this category.

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Metabolismo do ferro em equinos atletas

Cited by 8 publications

References 23 publications

Intake of Polydextrose Alters Hematology and the Profile of Short Chain Fatty Acids in Partially Gastrectomized Rats

Intake of Polydextrose Alters Hematology and the Profile of Short Chain Fatty Acids in Partially Gastrectomized Rats

Concentrações de ferro, cobre, zinco e manganês em equinos da raça Puro-sangue Lusitano, antes e após exercício

Effect of vaquejada exercise on the physiological and biochemical profiles of sporadic competitors and atletic horses

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