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PubMed1994

[Diagnosis of retinal diseases in dogs and cats].

The article presents an overview on the different examination techniques that can be used to make up a diagnosis of retinal disease in the dog and cat. Patient history, examination for visual impairment, direct and indirect ophthalmoscopy, fluorescence angiography, electroretinography and ophthalmic ultrasonography are mentioned. The most important elements of the normal fundus of dogs and cats as well as the ophthalmoscopical features of the most common retinal diseases in these species are given, illustrated by coloured photographs.

Animals↗
PubMed1978

Pulmonary vascular response of dogs with heartworm disease.

Heartworm diseases in dogs is an infectious disease that produces pulmonary hypertension. Dogs with the early vascular changes of heartworm disease, but without the clinical cardiopulmonary signs and pulmonary hypertension, were studied. Dogs with early heartworm were identified that had an exaggerated hypertensive response to hypoxia and to postaglandin F2alpha as compared to those of normal dogs. The pulmonary hypertensive response of dogs with spontaneous heartworm disease varied widely between individuals.

Animals↗
PubMed2006

Tick-transmitted diseases in dogs: clinicopathological findings.

In this article we describe the main clinicopathological findings of some tick-transmitted diseases observed in Italy, due to Ehrlichia canis and Babesia canis, and most rarely Anaplasma phagocytophilum and Anaplasma platys. Canine monocytic ehrlichiosis (CME) is a multisystemic disorder that is characterized by various clinical signs. Acutely-infected dogs show various clinical and haematological abnormalities including fever, lymphadenopathy, anorexia, lethargy, depression and thrombocytopenia. Many dogs with CME evolve in to an asymptomatic or chronically symptomatic carrier states. In Italy there are very few cases of Canine Granulocytic Ehrlichiosis (CGE) and all are attributed to A. phagocytophilum. The early manifestations of CGE are usually mild and consist in acute onset of fever and depression with or without thrombocytopenia. Lameness due to polyarthritys is also possible. Other clinical manifestations most rarely described are very similar to those reported in chronic form of E. canis infections. There are very few studies about clinicopathological findings of canine babesiosis in Italy. In our country this infection is caused by Babesia canis (large form of parasite) subspecies B. canis canis and B. canis vogeli. These two subspecies are morphologically indistinguishable. Clinical signs reflect the intravascular and extravascular haemolysis due to the life cycle of the parasite. The most common haematological abnormalities found in canine babesiosis are anaemia and thrombocytopenia. It is important to point out that co-infection between two or more agents is possible. In this case it is very difficult to attribute the clinical signs and haematological and/or biochemical abnormalities to a single specific agent.

Anaplasma↗
PubMed1993

Effects of vena caval banding in experimentally induced multiple portosystemic shunts in dogs.

Effects of vena caval banding on portal venous and vena caval hemodynamics were examined in 6 control dogs and in 10 dogs that had undergone attenuation (banding) of the abdominal part of the caudal vena cava and had dimethylnitrosamine-induced multiple portosystemic shunts (PSS). Additionally, indocyanine green (ICG) extraction and clearance after infusion to steady state were used to calculate hepatic plasma flow in these dogs. Sixteen dogs were randomly assigned to 2 groups: control (n = 6) or diseased (n = 10). Diseased dogs were administered dimethylnitrosamine (2 mg/kg, PO, twice weekly) until multiple PSS developed, as assessed by results of clinical laboratory tests, ultrasonography, and hepatic scintigraphy. Shunts were confirmed visually at celiotomy and by contrast portography. Venous pressures (caudal vena caval, portal, and hepatic) were recorded before and after vena caval banding for up to 7 days in dogs from both groups. Peritoneal cavity pressures were recorded in all dogs after closure of the body wall. To determine ICG extraction and clearance, a bolus injection of ICG (0.5 mg/kg, i.v.) was administered, followed by steady-state infusion of 0.097 mg/min. Extractions and clearances of ICG were measured, and from these, hepatic plasma flow rates were determined immediately before and after banding and at 6 hours, 48 hours, and 7 days after banding. The gradient (caudal vena caval pressure within 1 to 2 mm of Hg of portal pressure) between caudal vena cava and portal venous pressures established at banding was maintained after the first hour in both groups. Caudal vena cava pressures established at banding were maintained throughout the study, with the exception of the first hour in diseased dogs. Extraction ratios were higher in control dogs at all times, except at 48 hours. Clearance was higher in control dogs at all times. Hepatic plasma flow did not differ between groups, except immediately after banding, when flow was greater in diseased dogs, and differences were not found over time in either group. This study indicated that vena caval banding in this model of experimentally induced multiple PSS increases and maintains caudal vena cava pressure, relative to portal venous pressure (after the first hour) for 7 days, and that calculated hepatic plasma flow is not persistently improved by vena caval banding.

Animals↗
PubMed1976

An experimental kidney disease in dogs produced by injection of heterologous antisera to dog tubular fraction 3 antigen.

Glomerular disease characterised by morphological alterations of the glomerular basement membrane and the mesangium was produced in dogs by injections of heterologous anti-dog renal tubular fraction 3 antibody. The renal lesion was characterised by irregular thickening of the glomerular basement membrane, with electron-dense deposits and loose granular material within it.

Animals↗
PubMed1991

Inflammatory middle ear disease of the dog: the pathology of otitis media.

Inflammation within the middle ear cavity was recognised in 62 of the ears of 42 dogs with chronic otitis externa and otitis media, after biopsy or necropsy of the middle ear. The pathological changes in the middle ear resembled those reported in other species or after the experimental induction of otitis media in dogs. Perforations in the tympanic membrane were rarely found; on the contrary, the membrane was often thickened. However, the question of whether a perforation in the tympanic membrane must occur before otitis externa can extend to otitis media was not resolved.

Animals↗