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      Effect of intrabronchial platelet rich plasma on the exercise-induced pulmonary hemorrhage endoscopic score in thoroughbred racehorses using furosemide: a preliminary study Translated title: [Efeito da instilação intrabronquial de plasma rico em plaquetas no escore endoscópico da hemorragia pulmonar induzida por exercício em cavalos Puro-Sangue Inglês de corrida e usuários de furosemida: um estudo preliminar]

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          Abstract

          ABSTRACT The high prevalence of exercise-induced pulmonary hemorrhage (EIPH) in athletic horses constitutes to be a challenge to the racing industry and a source of major concern to animal welfare. Both experimental and clinical evidence indicate that the use of autologous platelet-rich plasma (PRP) is a promising effector of repair in a variety of pulmonary conditions. The present study evaluated the effect of intrabronchial instillation of PRP on EIPH endoscopic scores from 37 Thoroughbred racehorses. Inclusion criteria were for animals to be EIPH-positive in, at least, two consecutive post-exercise endoscopic exams and to receive 250mg of furosemide IV four hours before racing. Animals were randomly assigned into 3 groups: placebo, control, and PRP instillation. All 37 Thoroughbred racehorses included had EIPH endoscopic scores pre- and post- treatment compared by statistical analysis. The bleeding score from the group receiving PRP was significantly lower than in the control and placebo groups. No adverse effects were observed in any animal during or after the experiment. It was possible to conclude that the intrabronchial instillation of autologous PRP was effective in reducing EIPH scores in racehorses receiving furosemide and that this bioproduct can be considered as a promising coadjuvant in controlling EIPH in athletic horses.

          Translated abstract

          RESUMO A alta prevalência de hemorragia pulmonar induzida por exercício (HPIE) em cavalos atletas é um desafio de longa data para a indústria de corridas, além de figurar como grande preocupação sobre o bem-estar animal. As evidências experimentais e clínicas indicam que o uso do plasma rico em plaquetas (PRP) de fonte autógena é promissor na terapêutica de diversas lesões pulmonares. O presente estudo objetivou avaliar as mudanças após corrida no escore endoscópico de HPIE de 37 cavalos Puro-Sangue Inglês que receberam instilação intrabronquial de PRP autólogo. Os animais selecionados eram HPIE-positivos em, ao menos, dois exames endoscópicos consecutivos e recebiam 250mg de furosemida IV administrado quatro horas antes de cada corrida. Na comparação dos escores endoscópicos pré e pós-tratamento, verificou-se que o escore de HPIE do grupo tratado com PRP foi significantemente menor que o dos grupos controle e placebo. Nenhum efeito adverso foi observado nos animais durante ou após o experimento. Concluiu-se que a instilação intrabronquial de PRP autólogo foi efetiva na redução do escore de HPIE de cavalos de corrida usuários de furosemida e que este bioproduto pode ser considerado uma alternativa promissora no controle de HPIE em cavalos atletas.

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          Most cited references31

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          Platelet-rich plasma: evidence to support its use.

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            Bronchopulmonary dysplasia

            In the absence of effective interventions to prevent preterm births, improved survival of infants who are born at the biological limits of viability has relied on advances in perinatal care over the past 50 years. Except for extremely preterm infants with suboptimal perinatal care or major antenatal events that cause severe respiratory failure at birth, most extremely preterm infants now survive, but they often develop chronic lung dysfunction termed bronchopulmonary dysplasia (BPD; also known as chronic lung disease). Despite major efforts to minimize injurious but often life-saving postnatal interventions (such as oxygen, mechanical ventilation and corticosteroids), BPD remains the most frequent complication of extreme preterm birth. BPD is now recognized as the result of an aberrant reparative response to both antenatal injury and repetitive postnatal injury to the developing lungs. Consequently, lung development is markedly impaired, which leads to persistent airway and pulmonary vascular disease that can affect adult lung function. Greater insights into the pathobiology of BPD will provide a better understanding of disease mechanisms and lung repair and regeneration, which will enable the discovery of novel therapeutic targets. In parallel, clinical and translational studies that improve the classification of disease phenotypes and enable early identification of at-risk preterm infants should improve trial design and individualized care to enhance outcomes in preterm infants.
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              Characterization of the proteins released from activated platelets leads to localization of novel platelet proteins in human atherosclerotic lesions.

              Proteins secreted by activated platelets can adhere to the vessel wall and promote the development of atherosclerosis and thrombosis. Despite this biologic significance, however, the complement of proteins comprising the platelet releasate is largely unknown. Using a proteomics approach, we have identified more than 300 proteins released by human platelets following thrombin activation. Many of the proteins identified were not previously attributed to platelets, including secretogranin III, a potential monocyte chemoattractant precursor; cyclophilin A, a vascular smooth muscle cell growth factor; calumenin, an inhibitor of the vitamin K epoxide reductase-warfarin interaction, as well as proteins of unknown function that map to expressed sequence tags. Secretogranin III, cyclophilin A, and calumenin were confirmed to localize in platelets and to be released upon activation. Furthermore, while absent in normal vasculature, they were identified in human atherosclerotic lesions. Therefore, these and other proteins released from platelets may contribute to atherosclerosis and to the thrombosis that complicates the disease. Moreover, as soluble extracellular proteins, they may prove suitable as novel therapeutic targets.
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                Author and article information

                Journal
                abmvz
                Arquivo Brasileiro de Medicina Veterinária e Zootecnia
                Arq. Bras. Med. Vet. Zootec.
                Universidade Federal de Minas Gerais, Escola de Veterinária (Belo Horizonte, MG, Brazil )
                0102-0935
                1678-4162
                May 2021
                : 73
                : 3
                : 605-612
                Affiliations
                [2] Pensilvânia Pennsylvania orgnameUniversity of Pennsylvania orgdiv1School of Veterinary Medicine United States
                [1] Niterói Rio de Janeiro orgnameUniversidade Federal Fluminense orgdiv1Faculdade de Medicina Veterinária Brazil
                [3] Duque de Caxias Rio de Janeiro orgnameUniversidade do Grande Rio Brazil
                Article
                S0102-09352021000300605 S0102-0935(21)07300300605
                10.1590/1678-4162-12212
                8f39880d-b77b-4f18-bea3-91bb5e7bd1f6

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 09 October 2020
                : 24 February 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 31, Pages: 8
                Product

                SciELO Brazil

                Categories
                Veterinary Medicine

                intrabronquial,endoscopy,intrabronchial,platelets,racehorses,endoscopia,plaquetas,cavalos de corrida

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