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1.  Aspirin and some other nonsteroidal anti-inflammatory drugs inhibit cystic fibrosis transmembrane conductance regulator protein gene expression in T-84 cells. 
Mediators of Inflammation  1999;8(4-5):219-227.
Cystic fibrosis (CF) is caused by mutations in the CF gene, which encodes CF transmembrane conductance regulator protein (CFTR), a transmembrane protein that acts as a cAMP-regulated chloride channel The disease is characterized by inflammation but the relationship between inflammation, abnormal transepithelial ion transport, and the clinical manifestations of CF are uncertain. The present study was undertaken to determine whether three nonsteroidal anti-inflammatory drugs (NSAIDs) (aspirin, ibuprofen, and indomethacin) modulate CFTR gene expression in T-84 cells. Treatment with NSAIDs reduced CFTR transcripts, and decreased cAMP-stimulated anion fluxes, an index of CFTR function. However, the two phenomena occurred at different concentrations of both drugs. The results indicate that NSAIDs can regulate both CFTR gene expression and the function of CFTR-related chloride transport, and suggest that NSAIDs act via multiple transduction pathways.
PMCID: PMC1781806  PMID: 10704076
2.  Radioimmunoassay of serum pepsinogen in relation to gastric (pars oesophagea) ulceration in swine herds. 
A radioimmunoassay for the detection of serum swine pepsinogens is described. The sensitivity and reproducibility of the assay were satisfactory for its clinical use. In normal pigs, the serum pepsinogen level was 1.51 +/- 0.56 ng/mL. Cases with parakeratosis, erosions and ulcerations of the pars oesophagea had elevated pepsinogen levels (5.15 +/- 1.98 ng/mL).
PMCID: PMC1255676  PMID: 2379118
3.  Torsion of Abdominal Organs in Sows: A Report of 36 Cases 
The Canadian Veterinary Journal  1984;25(12):440-442.
Necropsy records of 36 sows with torsion of abdominal organs involving individually the stomach, the spleen, a liver lobe or the intestine were reviewed for the years 1970 to 1983, and the age, the clinical signs and the gross lesions were recorded. These acute abdominal accidents were characterized clinically by sudden death. Dry sows from large breeding units were affected. Twenty-six cases were diagnosed between January 1981 and December 1983 while only ten cases had been seen between 1970 and 1980. Gastric torsion was the most common condition (40% of the cases) and the other three conditions were equally represented (20% each). Management practises that could be responsible for the apparent increase in occurrence of this problem are discussed.
PMCID: PMC1790698  PMID: 17422483
Sows; torsion; stomach; spleen; liver lobe; intestinal volvulus
4.  Un ostéosarcome de la diaphyse du fémur d'un chien, associé à un implant métallique 
The Canadian Veterinary Journal  1984;25(11):426-428.
An osteosarcoma of the femoral diaphysis associated with the presence of a bone plate in a dog
A bone tumor which developed in the middle third of the left femur of an Irish Setter, seven years after a metallic plate had been used to reduce a fracture, is described. Through radiographs, the tumor was found to involve the diaphysis of the bone. The histopathology revealed that it was an osteosarcoma. Spontaneous and induced osteosarcomas are compared, and the possible correlation between the development of a tumor of this nature and the use of orthopedic implants is discussed.
PMCID: PMC1790673  PMID: 17422477
Osteosarcoma; orthopedic implants; diaphysis; dog
5.  Ovine Mastitis Due to Histophilus ovis 
The Canadian Veterinary Journal  1983;24(9):284-286.
The clinical, pathological and bacteriological findings related to ovine mastitis caused by Histophilus ovis are described. A high proportion of the ewes belonging to a flock were infected, but the source of the contamination could not be determined.
PMCID: PMC1790415  PMID: 17422303
6.  Neonatal Diarrhea of Pigs in Quebec: Infectious Causes of Significant Outbreaks 
To evaluate the relative importance of the various enteropathogens causing neonatal diarrhea in Quebec farrowing operations, observations were made on 749 diarrheic pigs from 325 outbreaks of diarrhea. They were one to 15 days of age, and were obtained alive for necropsy generally within 48 hours of the onset of diarrhea. Some pigs were from severe, explosive outbreaks of diarrhea with high morbidity and mortality rates, while others were from herds with chronic neonatal diarrhea with lower morbidity and mortality rates. A combination of bacteriological, virological and histological methods were used to study the pigs.
Viruses were incriminated in 60%, bacteria in 23% and coccidia in 15.3% of the 325 diarrhea outbreaks. Transmissible gastroenteritis virus was by far the most common enteropathogen with a prevalence of 52%; rotavirus was implicated in 9.2% of the outbreaks while adenovirus was incriminated in 0.30% of the outbreaks. Enterotoxigenic Escherichia coli were involved in 22.4% of the cases while Clostridium perfringens type C was an occasional finding. Coccidia involved in our herds were identified as Isospora suis. The disease was attributed to infection with a single etiologic agent in 590 diarrheic pigs (78%) while combinations of agents were present in only 90 (12%).
The age-specific occurrence of the various enteropathogens was evaluated. Transmissible gastroenteritis virus was the most common enteropathogen in all age groups. Colibacillosis was common in pigs which became diarrheic under five days of age; in this age group, the enterotoxigenic E. coli were frequently found alone, but were usually combined with other agents in older pigs. The prevalence of coccidia was high in pigs which became diarrheic between five and 15 days of age. Rotavirus infection was common in diarrheic pigs older than ten days of age. Although individual baby pigs were commonly infected with a single enteropathogen, it was very common to see more than one agent involved in an outbreak of diarrhea, particularly when pigs of different ages were affected.
Observations on the occurrence of the enteropathogens according to the seasons were also made. Occurrence of transmissible gastroenteritis was throughout the year with the highest prevalence during the fall, winter and spring months. Colibacillosis and coccidiosis were more common in the summer, fall and early winter months with the lowest prevalence in the spring months.
PMCID: PMC1235876  PMID: 6299483
13.  Hépato-néphrose puerpérale bovine 
The Canadian Veterinary Journal  1971;12(8):168-171.
PMCID: PMC1695358  PMID: 17421955
14.  Endrin poisoning in chickens. 
PMCID: PMC1695047  PMID: 5463196
16.  Bat Rabies in Canada 1963-1967 
Six hundred and twenty-eight insectivorous bats originating from seven provinces were submitted to this Institute for rabies diagnosis between August 1, 1963 and December 31, 1967. Brain tissue was examined by the fluorescent antibody technique and the mouse infectivity test was carried out with brain, salivary gland, interscapular adipose tissue and kidney samples. Rabies virus was detected in 44 bats, 29 of which were from Ontario, 12 from British Columbia and three from Manitoba. Most of the positive cases were diagnosed in summer months. Seven species were represented among the specimens found to be rabid; there were 32 big brown bats, three hoary bats, three silver-haired bats, two little brown bats, one eastern pipistrelle, one Keen myotis and one red bat. Another bat which was not identified also proved to be infected with rabies.
PMCID: PMC1319378  PMID: 4242773
17.  Demonstration of Rabies Antigen in Salivary Glands of Rabies Suspected Animals 
Submaxillary salivary glands from 129 rabies suspected animals were studied by the following methods: a) microscopic examination of frozen sections stained by the Fluorescent antibody technique (FAT), and b) mouse infectivity test (MIT). Flourescent antibody staining of frozen sections from the salivary glands of rabid animals proved to be a satisfactory method for demonstrating rabies antigen, when compared with the mouse infectivity test.
PMCID: PMC1319323  PMID: 4237297
20.  A Study of Toxoplasma Infection in Chickens and Cats on a Family Farm 
Presumptive evidence of toxoplasmosis was obtained following histological and serological studies of tissues from chickens and cats kept on a family farm. This was confirmed by transmission of the infection to experimental laboratory animals and back to chickens. The significance of the low grade serological reaction in one of the persons living on the farm was not clear.
PMCID: PMC1494468  PMID: 4220647
21.  The Use of Fluorescent Antibody Staining in the Diagnosis of Rabies 
Brain material from 750 domestic and wild animals submitted to this laboratory for rabies diagnosis was studied by the following three methods: a) microscopic examination of Williams' stained impressions, b) mouse inoculation test, and c) microscopic examination of impressions stained with fluorescein-tagged antibodies. The purpose of this investigation was to compare the sensitivity of the fluorescent antibody technique with that of two classical methods, when applied to the routine diagnosis of rabies. From the results obtained by one or the other method of study, 175 specimens were diagnosed as positive. Of these, only 58 (33 per cent) were detected by the examination of Williams' stained impressions. On the other hand, two rabid cases were missed by the mouse inoculation test, and four by the fluorescent antibody technique. Without being completely reliable, the last two methods proved to be almost equally sensitive and much more so than the examination of Williams' stained impressions.
PMCID: PMC1494414  PMID: 14290946
22.  Feeding of Ferrets with the Raw Meat and Liver of Chickens Chronically Poisoned with Toxic Groundnut Meal 
Chickens were fed a ration containing 30 per cent of toxic groundnut meal for up to six weeks. The concentration of aflatoxin (toxic metabolites of Aspergillus flavus) in the above ration was 3.06 p.p.m. At the end of 2nd, 4th or 6th week the birds were killed. The meat was removed from the bones and put through a meat grinder. The livers of three groups were pooled together. Three control groups of birds kept on commercial pellets were treated similarly.
Female ferrets, two years of age, were used in the present study. They were divided into four groups. The first three groups were given for one month meat from chickens fed the toxic ration for 2, 4, and 6 weeks, respectively. Each of these three groups contained one control ferret that was fed with the meat of chickens fed a commercial ration for a similar period of time. One half of the 4th group was fed pooled liver from intoxicated birds and one half was fed liver from control birds.
No significant changes in the ferret tissues were observed as a consequence of feeding them with the meat or liver from the chickens chronically poisoned with toxic groundnut meal.
PMCID: PMC1494373  PMID: 14295993
23.  A Note on the Rectal Instillation of Rabies Material into Syrian Hamsters 
Sixty-nine hamsters ranging in age from 18 to 33 days were exposed to rabies-positive suspensions by rectal instillation. None of the animals became infected during the 60-day observation period.
Les auteurs ont instillé par la voie rectale des suspensions de cerveaux rabiques à 69 hamsters dont l'âge variait de 18 à 33 jours. Aucun de ces animaux n'a succombé à l'infection au cours d'une période d'observation de 60 jours.
PMCID: PMC1494329  PMID: 17649539
24.  Bat Rabies in Ontario 
Rabies has been diagnosed for the first time in the bat population of Ontario. In the course of a study involving 72 bats from 24 counties of the province, five big brown bats (E. fuscus) were found to be infected with rabies through the mouse inoculation test. At the present time, it does not look as if bats have been connected with the epizootic of sylvatic rabies in Ontario.
La rage est apparue pour la première fois chez les chauves-souris en Ontario. Au cours d'une étude qui a porté sur 72 de ces animaux provenant de 24 comtés de la province, l'inoculation d'animaux de laboratoire a permis confirmer la présence de la maladie chez cinq grosses chauves-souris brunes (E. fuscus). A date, il ne semble toutefois pas que les chauves-souris soient impliquées dans l'épizootie de rage sylvatique qui sévit en Orntario.
PMCID: PMC1494224  PMID: 17649490
25.  Scrapie I. Transmission and Pathogenesis 
Homogenized brain, extracts, and residues of brain from normal and scrapie sheep were inoculated into 116 sheep. Of 72 sheep inoculated with scrapie material 27 developed the disease, whereas four of 44 inoculated with `normal' brain material showed symptoms similar to those of scrapie. The scrapie agent survived extraction for 18 hours with diethyl ether followed by water for 24 hours. Similarly the agent survived extraction in a Soxhlet apparatus with 95 per cent ethanol containing 2.0 per cent 4 M HC1 for 24 hours.
There was no evidence of demyelination in sections of brain and spinal cord supporting the view that allergic encephalomyelitis is not responsible for the scrapie symptoms. Liver function, as measured by the bromsulfalein test, remained normal until just before death. These results preclude that liver dysfunction contributes to the disease but do not exclude the possibilities of other metabolic derangements.
PMCID: PMC1583649  PMID: 17649434

Results 1-25 (28)