2009
DOI: 10.1590/s0102-09352009000200004
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Histological changes of the liver and metabolic correlates in ewes with pregnancy toxemia

Abstract: The histological changes of the liver in ewes with pregnancy toxemia were characterized. Ten ewes were fed on grass ad libitum, and another ten were starved from day 130 of pregnancy for up to four days. Liver puncture biopsies were performed at days 70, 100, 130, and 140 of pregnancy, and at day 45 in postpartum. Seric hydroxybutyrate (HB), non-esterified fatty acids (NEFA), aspartate aminotransferase, and alkaline phosphatase were dosed. Histological preparations revealed similar incidence and intensity of m… Show more

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Cited by 26 publications
(20 citation statements)
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“…However, concurrent findings of bacterial bronchopneumonia and low hepatic copper in the fetus (which should be at its highest at birth) and verminous pneumonia, septicemia, and low hepatic copper in the dam points toward a complex diagnosis, likely involving comorbidities. Also, finding hepatocellular vacuolar degeneration in pregnant females suggests these animals were in negative energy balance and could have had other toxicities (Cal et al 2009). …”
Section: Discussionmentioning
confidence: 99%
“…However, concurrent findings of bacterial bronchopneumonia and low hepatic copper in the fetus (which should be at its highest at birth) and verminous pneumonia, septicemia, and low hepatic copper in the dam points toward a complex diagnosis, likely involving comorbidities. Also, finding hepatocellular vacuolar degeneration in pregnant females suggests these animals were in negative energy balance and could have had other toxicities (Cal et al 2009). …”
Section: Discussionmentioning
confidence: 99%
“…Em dois casos as fêmeas sofreram restrição alimentar de dois dias devido ao transporte de outra localidade, fato esse que contribuiu para um baixo suprimento energético para o feto e, consequentemente, a lipólise com a formação de corpos cetôni-cos, a fim de equilibrar o déficit energético. Entretanto, essa rota bioquímica leva à esteatose, com formação de microvesículas no citoplasma dos hepatócitos, observados em todos os casos desse estudo (Schild 2007, Cal et al 2009). As situações de estresse hipoglicêmico, a gestação gemelar e o final do período gestacional são fatores que aumentam a suscetibilidade para a ocorrência da doença (Schild 2007, Schlumbohm & Harmeyer 2008.…”
Section: Doença Sinais Clínicos Achados De Necropsia Alterações Histounclassified
“…Ao longo de todo o período do periparto não foi observado efeito de momento na atividade sérica de AST, FA e CK (Quadro 4), permanecendo os valores destas variáveis situadas dentro da normalidade para a espécie ovina (Kaneko et al 2008), caracterizando não haver comprometimento celular hepático (Wierda et al 1985, Contreras et al 2000, Cal et al 2009). Outros autores, avaliando a influência do propileno glicol sobre os valores enzimáticos de AST em cabras e vacas no período de transição, não evidenciaram alterações na atividade sérica desta enzima (Hoedemaker et al 2004, Mikula et al 2008, Chiofalo et al 2009).…”
Section: Perfil Metabólico E Enzimáticounclassified