A STORAGE-LIKE DISEASE WITH SKELETAL INVOLVEMENT IN A DOG

A storage-like disease in a 14-month-old Rhodesian Ridgeback dog is described. Clinically the dog was lame on all legs, and appendicular joint capsules were distended. Radiographically and at necropsy, there was evidence of osteoarthritis, increased volume of synovial fluid, and marked hypertrophy of the synovial membranes. Large mononclear cells with vacuolated cytoplasm were evident in synovial membranes. Large mononuclear cells with vacuolated cytoplasm were evident in synovial membranes. Large mononuclear cells with vacuolated cytoplasm were evident in synovial membranes, bone marrow, liver, lymph nodes, and endocrine glands. Vacuolated cells in lymph nodes stained positively for fat. Transmission electron microscopy revealed empty membrane-bound cytoplasmic vacuoles. The similarity of this disease to storage diseases in man where arthropathy is a feature is discussed.     

A TechniaueI for the Examination of Lactate Dehydrogenase Isoenzymes in the Dog

Abstract— A technique and apparatus for the electrophoretic separation and staining of lactate dehydrogenase isoenzymes in canine sera is described. The technique is a modification of the agar gel electrophoretic method of Wieme (1959) and is relatively simple, reproducible and inexpensive, allowing visual and densi tometric evaluation of the relative quantities of each enzyme fraction. Cellulose acetate and five different types of commercially available agar were examined for their suitability as a support medium for LDH isoenzyme separation using canine sera. Risumé—On décrit une technique et un appareil pour la séparation électrophorttique et la coloration des enzymes du groupe de la deshydrogénase lactique dans le sérum de chien. La technique at une modification de la méthode électrophorétique en gel d'agar de Wieme (1959) et elle est relativement simple, fidéle et peu couteuse, et elle permet une évaluation visuelle et densimétrique des quantités relatives de chaque fraction enzymatique. Les qualités de l'acétate de cellulose et de 5 types différents d'agar à notre disposition dam le commerce ont été examiné en temps que milieu support pour la séparation des enzymes du groupe lacto-deshydrogénase du sérum de chien. Zusammenfassuug—Eine Methode und die Apparatur für die elektrophoretische Trennung und Färbung von Lactatdehydrogenaseioenzymen in Hundeseren werden beschrieben. Die Methode it eine Modifikation der elektrophoretischen Agargelmethode von Wieme (1959) und relativ einfach, reproduzierbar und billig; sie ermöglicht die visuelle und densitometrische Feststellung der relativen Mengen jeder Fermentfraktion. Celldoseacetat und fiinf verschiedene Typen handelsmässigen Agars wurden hinsichtlich ihrer Eignung als Trägersubstanz für die LDH-Isoenzymtrennung von Hundeseren benutzt.     

PrP antibodies do not trigger mouse hippocampal neuron apoptosis

Intraperitoneal administration of ICSM18 and 35, monoclonal antibodies against prion protein (PrP), has been shown to significantly delay the onset of prion disease in mice, and humanized versions are candidate therapeutics for prion and Alzheimer's diseases. However, a previous report of severe and widespread apoptosis after intracerebral injection of anti-PrP monoclonal antibodies raised concerns about such therapy and led to an influential model of prion neurotoxicity via cross-linking of cell surface PrP by disease-related PrP aggregates. In extensive studies including ICSM18 and 35, fully humanized ICSM18, and the previously reported proapoptotic antibodies, we found no evidence of apoptosis, thereby questioning this model of prion neurotoxicity.     

Postprandial glycaemia in cats fed a moderate carbohydrate meal persists for a median of 12 hours -- female cats have higher peak glucose concentrations

The postprandial increase in glucose concentration is typically not considered in selecting diets to manage diabetic and pre-diabetic cats. This study describes increases in glucose and insulin concentrations in 24 clinically healthy, neutered adult cats following one meal (59 kcal/kg) of a moderate carbohydrate diet (25% of energy). Median time to return to baseline after feeding for glucose was 12.2 h (1.8-≥24 h) and for insulin was 12.3 h (1.5-≥24 h). Time to return to baseline for glucose was not different between male (10.2 h) and female (17.2 h) cats. There was evidence female cats had a longer return to baseline for insulin (18.9 h versus 9.8 h) and females had higher (0.9 mmol/l difference) peak glucose than males. This demonstrates that the duration of postprandial glycaemia in cats is markedly longer than in dogs and humans, and should be considered when managing diabetic and pre-diabetic cats.     

Radiographic evaluation of nonanesthetized and nonsedated dogs for hip dysplasia

The use of chemical or gas restraint was unnecessary in most large breed dogs being evaluated radiographically for hip dysplasia. Of 100 large-breed dogs, 97 were successfully radiographed for hip dysplasia evaluation without the use of sedation or anesthesia.