PubMed Health⌕ Search

Biomedical subjects

P Hélie

Publications and source records attributed to P Hélie.

At least 19 recordsLinked to original sources
PubMed2001

Multifocal subacute necrotizing encephalomyelopathy in a Simmental calf.

Multifocal subacute necrotizing encephalomyelopathy affects Simmental and Simmental-cross cattle. First clinical signs are ataxia and hind limb paresis. The characteristic gross lesion is bilaterally symmetrical, grey, depressed to cavitated foci involving nuclei in the brainstem. The caudal olivary nucleus is consistently involved. The etiology of the syndrome remains unknown.

Animals↗
PubMed2000

Etiology, forms, and prognosis of gastrointestinal dysfunction resembling vagal indigestion occurring after surgical correction of right abomasal displacement.

The objectives of this study were to determine the etiology and types of vagal indigestion (VI) occurring after right displacement of the abomasum or abomasal volvulus (RDA/AV), and the prognosis for each type. Data of cows presented for RDA/AV from a retrospective (n = 288) and a prospective (n = 132) study were used. Vagal indigestion occurred in 39 and 22 cows in each study, respectively. A necropsy was performed in 29 cases. Gastric compartment dilation compatible with VI type III or IV occurred in 23 cases. An abnormal gastric wall was detected in 22 cases. Peritonitis was present in 18 cows. Vagal nerve lesions were present in 5 out of 13 cases studied. Clinical, hematological, and necropsy results suggested a classification of VI with respect to presence or absence of peritonitis. Gastric wall damage, peritonitis and vagal nerve lesions appear important in the etiology. Considering peritonitis occurrence, antimicrobial therapy appears necessary in the treatment of RDA/AV.

Abomasum↗
PubMed1999

Intrapericardial neoplasia in dogs.

A retrospective study was conducted from 1,919 necropsies of dogs, and 52 cases were selected on the basis of primary or metastatic neoplasia in the pericardium, the heart base, or the myocardium. Primary intrapericardial neoplasms were more frequent than intrapericardial metastases. Hemangiosarcomas were the most frequent primary neoplasms, followed by chemodectomas. Lymphomas were the most frequent metastatic neoplasms, followed by fibrosarcomas and rhabdomyosarcomas. Other neoplasms, either primary or metastatic, occurred rarely.

Animals↗
PubMed1999

Jejunoileal incarceration and strangulation through a splenic defect in a mare.

A 6-year-old, standardbred mare was presented for colic of 12 h duration. Transrectal palpation revealed intestinal distension of unknown cause. The mare was euthanized. At necropsy, segmental jejunoileal incarceration and strangulation through an opening in the spleen was observed. This opening was considered to be a congenital defect.

Animals↗
PubMed1995

Systemic necrotizing vasculitis and glomerulonephritis in grower pigs in southwestern Quebec.

This purpose of this study was to describe the clinical features and the pathological findings of an unusual condition observed in pigs of a fattening unit in southwestern Quebec. Two of these pigs were submitted for complete postmortem examination. The disease was characterized by a systemic necrotizing vasculitis and an exudative and proliferative glomerulonephritis. In the skin, the vascular lesions produced a conspicuous papular dermatopathy with a characteristic distribution. Bacteriological and virological results were inconclusive. In the glomeruli, there were extensive granular complement deposits with scattered immunoglobulin M. Transmission electron microscopy did not reveal any dense deposits in glomerular basement membrane. The cause of this newly recognized and potentially lethal condition remains unknown, although histological and immunopathological observations suggest an immune-mediated process.

Animal Husbandry↗
PubMed1994

Attaching and effacing and enterotoxigenic Escherichia coli associated with enteric colibacillosis in the dog.

The objective of this study was to describe observations from cases of enteric colibacillosis in the dog. Thirteen cases of canine enteric colibacillosis were diagnosed from routine necropsy submissions to our diagnostic laboratory from 1980 to 1992. In all cases there was a clinical history of gastrointestinal disease associated with histological and bacteriological evidence of either attaching and effacing Escherichia coli (AEEC) or enterotoxigenic Escherichia coli (ETEC) infection. Of these 13 cases of enteric colibacillosis, 12 were associated with AEEC and one with ETEC. Eight of the 12 AEEC isolates were available for study. They were of various serogroups, non-hemolytic, and negative for the genes coding for fimbrial antigens F4, F5, F6, F41 and F165; enterotoxins STap, STb and LT; and verotoxins VT1 and VT2. These eight isolates were EAE-positive (E. coli attaching and effacing) by colony hybridization; six of these were also EAF-positive (EPEC adherence factor), and six were BFP-positive (bundle-forming pilus). The ETEC isolate was negative for the EAE, EAF and BFP determinants and for the fimbrial antigens tested but was positive for the STap and STb genes. Most of the dogs affected with enteric colibacillosis originated from kennels and pet shops and were aged between 1.5 and 3 months. Coinfection with other enteric pathogens was identified in eight of these 13 cases. This study showed that Escherichia coli should be considered of causal significance when investigating diarrheal disease in dogs, particularly in puppies.

Animals↗
PubMed1990

[The butterfly bridge: causes of debonding, 18 years clinical observation].

For 18 years, the acid-etched bridge has been put to good use. Clinical observations over this period of time allow us to take a step back and review this conservative technique. Using the results of clinical research, this article aims to evaluate the performance and basic principles relative to the acid-etched bridge. The primary and secondary causes of debonding are also identified.

Acid Etching, Dental↗
PubMed1989

[Barrier protection and disinfection].

The practice of dentistry has changed considerably with the proliferation of infectious diseases. A dentist must integrate new universal aseptic measures in his practice to prevent the spread of these diseases. In the first instance, each member of the dental team must be informed of the risks of contamination and infection inherent with their work. They must be properly trained to know and be able to apply all measures which will minimize any possible risk for themselves and for all their patients. Infection control begins with prevention and consists of using protective barrier techniques which will prevent the spread of infection directly from one person to another. Their use is suggested in order to protect those providing care, as well as, patients from cross contamination. One must reinforce these preventive measures by using corrective techniques which will eliminate contamination agents on all instruments, surfaces and equipment. Everything that cannot be sterilized must be disinfected with disinfectants following recommended procedures which are efficient and protect those providing care.

Communicable Disease Control↗