ABSTRACT The aim of this study was to assess the addition of intestinal alkaline phosphatase (IAP) to diets on the count of bacterial populations, pH of digestive organ contents, histopathological description, proinflammatory markers, hepatic glycogen reserve, and diarrhoea incidence of piglets challenged with Escherichia coli. Sixty-four crossbred piglets (7.16±0.28 kg body weight, 25-days-old) were assigned to four treatments in a completely randomised block design: negative control (NC), NC + antibiotic (ANT), NC + 15 mg IAP, or NC + 30 mg IAP kg−1 of diet, eight replications of two piglets per experimental unit. All piglets were orally challenged with 6 mL of a solution containing enterotoxigenic Escherichia coli K88 at 106 CFU mL−1 at 15 days of experimentation. The study lasted for 19 days. At the end of the experimental period, the piglets were slaughtered (six animals per treatment). Enterobacteriaceae in caecum and colon was lower in piglets on 30 mg IAP than with ANT and NC, ANT or 15 mg IAP, respectively. Enterobacteriaceae adhered to the mesenteric lymph nodes (MLN) was greater in piglets fed ANT than the other treatments. Lactic acid bacteria (LAB) count in caecum was greater in piglets fed NC and ANT. In MLN, LAB count was greater in ANT and 30 mg IAP-fed piglets compared with 15 mg IAP. Piglets in 30 mg IAP in diet showed a tendency for lowering tissue necrosis compared with NC or ANT. Piglets fed 30 mg IAP showed a reduction in diarrhoea incidence in the pre- and post-challenge compared with 15 mg IAP and all other treatments, respectively. Based on the criteria, addition of 30 mg IAP to diet inhibits Enterobacteriaceae population and suggests a potential effect in mitigating intestinal injuries, as observed in piglets in the NC for some of the parameters investigated.

RESUMO: A distrofia muscular do Golden Retriever (DMGR) é o modelo mais representativo para o estudo da distrofia muscular de Duchenne (DMD) em humanos devido a sua expressão fenotípica. A DMD é uma desordem genética recessiva ligada ao cromossomo X onde a perda da distrofina induz fraqueza progressiva e degeneração do músculo esquelético e cardíaco conduzindo a substituição do músculo por tecido conjuntivo e adiposo. O início da doença ocorre entre 2 e 5 anos de idade e muitos pacientes morrem por insuficiência cardíaca ou respiratória. Os principais estudos realizados no Golden Retriever distrófico (GRD) buscam elucidar a fisiopatogenia da doença e suas implicações clínicas na tentativa de testar terapias e tratamentos alternativos para melhoria da qualidade de vida do paciente distrófico e aumentar sua longevidade. Esta revisão apresenta uma visão geral sobre relevante contribuição do modelo GRD para elucidar a DMD em humanos.

ABSTRACT: Golden Retriever muscular dystrophy (GRMD) is the most representative model for studying Duchenne muscular dystrophy (DMD) in humans, owing its phenotypic expression. DMD is a recessive disorder linked to the X chromosome in which the loss of dystrophin induces progressive weakness and degeneration of the skeletal and cardiac muscles, which lead to replacement by connective and adipose tissues. Onset of clinical signs occurs between 2 and 5 years of age, and many patients die from heart or respiratory failure. The main studies concerning dystrophic Golden Retrievers (DGR) sought to elucidate the pathophysiology of the disease and its clinical implications to develop therapies and alternative treatments to improve the quality of life and increase longevity of DMD patients. This review presents an overview of relevant contributions of the DGR model for elucidating DMD in humans.

O presente trabalho visa relatar um caso de lipossarcoma canino, por se tratar de uma rara neoplasia em cães. Um cão, fêmea, Fila Brasileiro, 9 anos de idade com 47kg apresentou anorexia, vômito e apatia. A palpação abdominal revelou massa na região mesogástrica, e o paciente morreu antes da celiotomia exploratória. À necrópsia, constatou-se massa medindo 10 x 10 x 13cm aderida ao baço. O diagnóstico histológico foi lipossarcoma.

A case of liposarcoma is reported in a 9-year-old female Brazilian Fila with 46kg, which was presented with anorexia, vomiting and apathy. Physical examination revealed the presence of an abdominal mass in the mesogastric region. The patient died before exploratory celiotomy. At necropsy a mass with 10 x 10 x 13cm attached to the capsule of the spleen was observed. Histopathological examination confirmed liposarcoma.