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PubMed1996

[The diagnosis of liver diseases in the dog].

This article shows the possibilities of liver diagnosis in dogs. After a short introduction about metabolism with some aspects in pathophysiology follows the way of investigation from anamnesis, clinical examination, blood work and urinalysis to ultrasound, x-ray and biopsy.

Animals↗
PubMedDate not supplied

Clinical findings and coronary artery disease in dogs and cats with acute and subacute myocardial necrosis: 28 cases.

Records of final diagnoses based on necropsies performed on dogs and cats over a 4.5-year period at a university teaching hospital were examined for the diagnosis of acute or subacute myocardial necrosis. Clinical findings signaling the occurrence of myocardial necrosis were often not specific, due to simultaneously occurring disease processes. However, of 28 animals identified, dyspnea occurred frequently (17/28; 61%) and in some cases in the presence of minimal pulmonary pathology (2/3; 66%) or otherwise unexplained pulmonary edema (4/4; 100%). Elevations in serum aspartate aminotransferase (10/10; 100%) and creatine kinase (5/9; 55%) were also frequent. Disease processes associated with thrombus formation were present for each case in which a coronary artery thrombus occurred (5/28; 18%).

Acute Disease↗
PubMed1981

A study of skin diseases in dogs and cats. VI. Microflora of the major canine pyodermas.

From 40 dogs with pyoderma swabs from areas with representative lesions were examined bacteriologically. Staph. aureus was found in 98% of the areas, beta-hemolytic streptococci in 30%, and Gram-negative organisms, mainly Proteus spp., in 30% (Table I). Pure infection with Staph. aureus was found in 55% of the areas. Staph. aureus and beta-hemolytic streptococci were found in 15%, Staph. aureus and Gram-negative organisms in 15%, Staph. aureaus and beta-hemolytic streptococci as well as Gram-negative organisms in 13%, and beta-hemolytic streptococci and Gram-negative organisms in 3% (Table II). Compared to normal and eczematous skin areas, Staph. aureus was found more often, and in greater numbers, in areas with pyoderma, whereas micrococci, alpha-hemolytic streptococci, and Acinetobacter spp. were rarer. Gram-negative organisms such as Proteus spp., E. coli, and Pseudomonas spp. were found with equal frequency in eczema and pyoderma, while beta-hemolytic streptococci were almost exclusively associated with suppurative lesions (Tables IV and V).

Acinetobacter↗
PubMed2005

Frequency, body distribution, and population size of Malassezia species in healthy dogs and in dogs with localized cutaneous lesions.

Malassezia species are commensal organisms of human and animal skin that occasionally act as opportunistic pathogens. The lipid-dependent species are associated with human skin disorders, whereas the non-lipid-dependent species (Malassezia pachydermatis) is considered as an opportunistic secondary pathogen affecting the canine skin surface and ear canal. This study evaluated the relationship between Malassezia yeasts, their population size, and the occurrence of skin lesions from healthy and skin-diseased dogs. The efficiency of cytological examination and fungal culture for Malassezia detection was also evaluated. From March 2002 to July 2003, 33 healthy dogs and 54 dogs with pruritic localized skin diseases were examined; skin swabs (1218) were collected from 7 anatomical sites for culture and cytological examination. Malassezia prevalence according to anatomical site and the agreement between cytological results and fungal cultures were statistically analyzed. Differences in mean colony forming unit counts between positive healthy and diseased dogs were evaluated using the Bonferroni test for post hoc pair-wise comparisons. In healthy dogs, Malassezia yeasts were most frequently isolated in the perianal and perioral areas. The frequency of isolation and population size of Malassezia species were higher in dogs with localized dermatitis, especially in affected areas, indicating a role for Malassezia in the occurrence of skin lesions. Malassezia pachydermatis was the species most commonly cultured from the skin and external ear canal of healthy and diseased dogs; isolation of lipid-dependent yeasts from healthy dogs was less frequent. Using fungal culture as the gold standard, cytological examination showed good relative specificity (95%) but very low relative sensitivity (30%).

Animals↗
PubMed1990

Quantitative hepatobiliary scintigraphy as a measure of bile flow in dogs with cholestatic disease.

In 25 dogs with spontaneous cholestatic disease, the hepatobiliary dynamics were evaluated by use of scintigraphy and a 99mTc-labeled iminodiacetate (IDA) derivative. Hyperbilirubinemia existed in all dogs, with serum total bilirubin concentration ranging from 6 to 262 mumol/L. An appropriate compartmental model was used to characterize the liver time-activity curves. Model-dependent variables for hepatic uptake and biliary excretion of radiolabeled IDA were found to reliably represent the underlying physiologic processes. Measurements directly derived from the liver time-activity curves of IDA, representing the moments of accumulation of 50 and 95% of the maximal hepatic activity did not accurately represent the hepatic uptake by being significantly influenced by biliary excretion and by competition of renal excretion. The time-interval between 95% and 50% of the maximal activity in the excretory phase proved to be a quantitative characteristic of bile flow in all instances. Compartmental analysis of 99mTc-IDA excretory scintigraphy characterized bile flow quantitatively in clinically normal dogs and in dogs with cholestasis. The method permitted the clinical evaluation of cholestasis based on quantitative, instead of the usual qualitative, and on functional, instead of phenomenologic, criteria.

Animals↗
PubMed2004

Traditional and nontraditional effective and noneffective therapies for cardiac disease in dogs and cats.

In this article, I presented my (admittedly biased) perspective of the current state of knowledge addressing the role of traditional and non-traditional therapeutics. The focus has been on the nontraditional therapeutics. Among these, the only ones I currently consider to have any documented value are taurine and, less commonly, L-carnitine. The role of taurine (and likely carnitine) remains limited to cases of documented deficiency. In the case of cats with taurine deficiency-induced myocardial failure, it is now clear that most cases are the result of formulation errors by owners and manufacturers. In dogs, it is less clear if the causes of taurine deficiencies represent manifestations of pathologic conditions or dietary formulations errors. Increasingly, it seems the latter may prove to be the case in most, if not all, circumstances. Finally, I would like to reiterate the conclusions of the last time I addressed this topic (with coauthors Kittleson and Sanderson) in this publication. Remember that there is limited evidence to support the therapeutic recommendations you read or hear in most circumstances. The urge to do "something" for patients can be overwhelmingly attractive. Nevertheless, whether it is administration of drugs or prescribing nutraceuticals or prescription diets, strongly consider the source of the information urging you to prescribe, the strength of the evidence presented, the financial costs to the owner, and the potential risks and benefits to the patient.

Animals↗
PubMed1977

Pathogenesis of infection with Rickettsia rickettsii in the dog: a disease model for Rocky Mountain spotted fever.

Dogs inoculated with Rickettsia rickettsii developed a clinical syndrome ranging in severity from a mild febrile exanthema to death within six days after inoculation. The severity of the disease appeared to be dose-related, and the signs were comparable to R. rickettsii infection in humans on a clinical and hematological basis. Dogs were rickettsemic for 10 to 14 days after infection. In most animals the level of rickettsemia was greater than or equal to 10(2.5) guinea pig intraperitoneal 50% infectious doses (GPID50). Infected dogs responded serologically as determined by indirect fluorescent antibody methods and were protected when challenged six to 12 months later with 10(7.0) GPID50 of the homologous strain of R. rickettsii. The monocyte culture technique was successfully used for the detection of rickettsemia, and the results compared favorably with those obtained by the guinea pig inoculation method of isolation.

Animals↗
PubMed1992

Acupuncture for the treatment of thoracolumbar and cervical disc disease in the dog.

Thoracolumbar disc disease (TLDD) and cervical disc disease (CDD) occur quite regularly in veterinary small animal practice, occurring predominantly in chondrodystrophic breeds and mostly around the age of 5-6 years. CDD is responsible for +/- 15% and TLDD for +/- 85% of disc herniations. Treatments may consist of surgery or medication or both. Acupuncture can also be used as a treatment for TLDD and CDD. With a few exceptions, the results of acupuncture treatment for TLDD and CDD are favorable and comparable to those of surgical treatments. The acupuncture techniques presented here are relatively simple and can be learned in a minimum of time.

Acupuncture Therapy↗
PubMed2002

Chagas disease in dogs from endemic areas of Costa Rica.

Dogs with the presumptive diagnosis of Chagas disease are commonly sent to our School of Veterinary Medicine by independent veterinarians. This prompted us to evaluate the prevalence of canine trypanosomiasis in some villages of the Central Valley of Costa Rica. A total of 54 dogs (21 males and 33 females) from five rural villages, with ages between 3 months and 10 years old, were bled and submitted to three serological tests: indirect immunofluorescence, indirect hemagglutination and ELISA. Among all animals, 15 (27.7%) revealed antibodies (6 pure bred and 9 mongrels) and in 3 of them the parasite was also demonstrated by xenodiagnosis. All positive animals except 1, and 9 negative animals (control group) were examined by X-rays and electrocardiography, revealing different degrees of cardiomegaly and ECG alteration, consistent with Chagas disease pathology in one dog (SA-11) of the infected ones. Examination of 50 inhabitants living in the houses where dogs and Triatoma dimidiata were found, yielded negative serological reactions. This was assumed to support the hypothesis that dogs are commonly infected by the oral route, a more effective means of infection compared with the vector transmission mechanism that occurs in humans.

Adult↗