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Investigation of the protective effect of enoxaparin and ticagrelor pretreatment against ischemia-reperfusion injury in rat lung tissue
Findik, Orhan; Yilmaz, Melda Yardimoglu; Yazir, Yusufhan; Rençber, Selenay Furat; Sarihan, Kübra Kavram; Kunt, Atike Tekeli.
  • Findik, Orhan; Derince Education and Research Hospital. Department of Cardiovascular Surgery. Kocaeli. TR
  • Yilmaz, Melda Yardimoglu; Kocaeli University. Faculty of Medicine. Department of Histology and Embryology. Kocaeli. TR
  • Yazir, Yusufhan; Kocaeli University. Faculty of Medicine. Department of Histology and Embryology. Kocaeli. TR
  • Rençber, Selenay Furat; Kocaeli University. Faculty of Medicine. Department of Histology and Embryology. Kocaeli. TR
  • Sarihan, Kübra Kavram; Kocaeli University. Faculty of Medicine. Department of Histology and Embryology. Kocaeli. TR
  • Kunt, Atike Tekeli; Health Sciences University Ankara. Numune Training and Research Hospital. Department of Cardiovascular Surgery. Ankara. TR
Rev. Assoc. Med. Bras. (1992) ; 65(9): 1193-1200, Sept. 2019. graf
Article in English | LILACS | ID: biblio-1041079
ABSTRACT
SUMMARY OBJECTIVES This study was conducted to reveal the possible protective effects of ticagrelor and enoxaparin pretreatment against ischemia-reperfusion (IR)-induced injury on the lung tissue of a rat model. METHODS Wistar albino rats were randomly divided into 4 groups as follows group-1 (control-sham), group-2 (control-saline+IR), group-3 (ticagrelor+IR), group-4 (enoxaparin+IR). Before the ischemic period, saline, ticagrelor, and enoxaparin were administered to the 2nd-4th groups, respectively. In these groups, IR injury was induced by clamping the aorta infrarenally for 2 h, followed by 4 h of reperfusion except group-1. After the rats were euthanized, the lungs were processed for histological examinations. Paraffin sections were stained with Haematoxylin&Eosin (H&E) for light microscopic observation. Apoptosis was evaluated by caspase-3 immunoreactivity. Data were statistically analyzed using the SPSS software. RESULTS In the lung sections stained with H&E, a normal histological structure was observed in group-1, whereas disorganized epithelial cells, hemorrhage, and inflammatory cell infiltration were seen in the alveolar wall in group-2. The histologic structure of the treatment groups was better than that of group-2. Caspase-3(+) apoptotic cells were noticeable in sections of group-2 and were lower in the treatment groups. In group-4, caspase-3 immunostaining was lower than in group-3. In group-2, apoptotic cells were significantly higher than in the other groups (p<0.001). CONCLUSION Based on the histological results, we suggested that both therapies ameliorated the detrimental effects of IR. Caspase-3 immunohistochemistry results also revealed that pre-treatment with enoxaparin gave better results in an IR-induced rat injury model. In further studies, other parameters such as ROS and inflammatory gene expressions should be evaluated for accurate results.
RESUMO
RESUMO OBJETIVOS Este estudo foi realizado para revelar os possíveis efeitos protetores do ticagrelor e do pré-tratamento da enoxaparina no tecido pulmonar contra o modelo de lesão induzida por isquemia-reperfusão (IR). MÉTODOS Ratos albinos Wistar foram randomizados e divididos em quatro grupos grupo 1 (controle-sham), grupo 2 (controle-salina + IR), grupo 3 (ticagrelor + IR), grupo 4 (enoxaparina + IR). Antes do período isquêmico, salina, ticagrelor e enoxaparina foram administrados nos grupos 2-4, respectivamente. Nesses grupos, a lesão de IR foi induzida pelo clampeamento da aorta na região da infrarrenal por duas horas, seguida por quatro horas de reperfusão, exceto no grupo 1. Após a sacrificação, os pulmões foram processados para exames histológicos. Secções de parafina foram coradas com hematoxilina e eosina (H&E) para observação microscópica de luz. A apoptose foi avaliada pela imunorreatividade da caspase-3. Os dados foram analisados estatisticamente pelo programa SPSS. RESULTADOS Nas secções pulmonares coradas com H&E, estrutura histológica normal foi observada no grupo 1, enquanto células epiteliais desorganizadas, hemorragia e infiltração de células inflamatórias foram observadas na parede alveolar no grupo 2. A estrutura histológica dos grupos de tratamento foi melhor que o grupo 2. Células apoptóticas caspase-3 (+) foram notadas em secções do grupo 2, e essas células foram mais baixas nos grupos de tratamento. No grupo 4, a imunocoloração com caspase-3 foi menor que no grupo 3. No grupo 2, as células apoptóticas foram significativamente maiores que nos outros grupos (p<0,001). CONCLUSÃO Com base nos resultados histológicos, sugerimos que ambas as terapias atenuaram os efeitos prejudiciais da RI. Resultados de imuno-histoquímica com caspase-3 também revelaram que o pré-tratamento com enoxaparina proporcionou melhores resultados no modelo de lesão induzida por IR. Em estudos posteriores, outros parâmetros, como ROS e expressões gênicas inflamatórias, devem ser avaliados quanto a resultados precisos.
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Full text: Available Index: LILACS (Americas) Main subject: Aorta, Abdominal / Reperfusion Injury / Enoxaparin / Protective Agents / Ticagrelor / Lung Limits: Animals Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2019 Type: Article Affiliation country: Turkey Institution/Affiliation country: Derince Education and Research Hospital/TR / Health Sciences University Ankara/TR / Kocaeli University/TR

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Full text: Available Index: LILACS (Americas) Main subject: Aorta, Abdominal / Reperfusion Injury / Enoxaparin / Protective Agents / Ticagrelor / Lung Limits: Animals Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2019 Type: Article Affiliation country: Turkey Institution/Affiliation country: Derince Education and Research Hospital/TR / Health Sciences University Ankara/TR / Kocaeli University/TR