Respostas inflamatórias sistêmica, do casco e do cólon menor submetido à distensão em equinos

• Ano de defesa: 2014
• Autor(a) principal: Gravena, Kamila [UNESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Equino; Cavalo; Intestinos - Obstruções; Citocinas; Inflamação; Laminite; Cytokines
• Link de acesso: http://hdl.handle.net/11449/121867

Numerous researchers have studied the relationship between colic and laminitis manifestation. Some studies with experimentally induced laminitis demonstrated involvement of the inflammatory response in the development of the disease. Therefore, the aim of this study was to investigate systemic and local inflammatory response, in intestines and hoof dermal and epidermal tissues, as well as to determine clinical and laboratory changes after intraluminal obstruction in small colon. For this purpose, eight healthy adult horses were submitted to a celiotomy to induce intraluminal distension of the small colon simulating acute abdomen by enterolith. Hoof and small colon biopsies were made at this time, and samples of blood and peritoneal fluid were collected. After four hours of intraluminal obstruction, the ball was deflated and new biopsies of hoof and small colon collected and blood and peritoneal fluid sampled. During the postoperative, animals were monitored by physical examinations every 12 hours. After 72 hours of ball removal, the last biopsies of hoof, colon, blood and peritoneal fluid were collected. The samples of blood and peritoneal fluid were used for hematological evaluation, for determining gene expression of IL- 1β, IL-6, IL-8, IL-10 and TNF-α by real-time PCR and to quantify IL-1β , IL- 6 and TNF-α by sandwich ELISA. Tissues obtained from biopsies were processed for histological evaluation and determination of IL-1β, IL-6, IL-8, IL- 10 and TNF-α by real time PCR. The values obtained in hematological evaluation differ (p<0.05) from baseline, especially four hours after obstruction (M4) and after 12 hours of postoperative (M12). Cytokines concentrations in peritoneal fluid increased in M4, returned to baseline within M72 and remained unchanged in serum samples. Regarding gene expression in blood, there was no significant difference. In peritoneal fluid, all cytokines differed from baseline. Concerning the colon, the ...