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Biomedical subjects

P Labelle

Publications and source records attributed to P Labelle.

At least 19 recordsLinked to original sources
PubMed2001

Dermatophilus-like infection in beluga whales, Delphinapterus leucas, from the St. Lawrence estuary.

Six beluga whales (Delphinapterus leucas) found dead on the shores of the St. Lawrence estuary had multiple slightly depressed greyish round areas randomly distributed over the whole body. Histologically, the surface of these areas was covered with a thick layer of Dermatophilus-like organisms which invaded the stratum corneum. The underlying stratum spinosum had marked spongiosis and vacuolar degeneration. Minimal neutrophilic infiltration was present within the underlying dermal papillae. To the authors' knowledge, dermatophilosis in cetaceans has not been reported previously.

Animals↗
PubMed2001

Seroprevalence of antibodies to Toxoplasma gondii in lynx (Lynx canadensis) and bobcats (Lynx rufus) from Québec, Canada.

The seroprevalence of antibodies to Toxoplasma gondii was investigated in trapped lynx (Lynx canadensis) and bobcats (Lynx rufus) from Québec, Canada. Forty-seven of 106 (44%) lynx and 4 of 10 (40%) bobcats had positive titers for T. gondii (> or = 25) by means of the modified agglutination test incorporating mercaptoethanol and formalin-fixed tachyzoites. Seroprevalence was significantly higher (P < 0.0001) in adult lynx than in juvenile lynx. The presence of antibodies to T. gondii in lynx and bobcats suggests that this organism is widespread in the wild and that exposure to wild felids and game animals from Québec may represent a potential source of infection for humans.

Age Factors↗
PubMed2000

Fibroleiomyomas of the tubular genitalia in female beluga whales.

Fibroleiomyomas of the tubular genitalia were diagnosed in 6 of 9 adult female beluga whales from the St. Lawrence estuary, Quebec, Canada. These tumors were located in the vagina (6 of 6), the cervix (2 of 6), and the uterus (1 of 6). Endogenous hormones or xeno-estrogens may be implicated in the occurrence of these tumors.

Animals↗
PubMed1987

Prophylactic argon laser photocoagulation of the second eye in presumed ocular histoplasmosis syndrome.

Fifty-six patients with presumed ocular histoplasmosis syndrome who exhibited a disciform macular detachment or macular scar in one fundus and one or more inactive atrophic lesions within the high-risk area of the second eye were seen at the Retina Service of Maisonneuve-Rosemont Hospital, Montreal, between 1972 and 1984. All 56 were followed for at least 10 months. Of the 56, 28 had received prophylactic argon laser photocoagulation of the inactive chorioretinal lesions. The rate of activation of the lesions was similar in the treated and untreated groups (10/28 over a mean follow-up period of 44.2 months and 11/28 over a mean period of 43.2 months respectively). In the untreated group there was an increased risk of activation with a higher number of lesions (t = 2.386). In both groups the risk of activation increased with the proximity of the lesions to the centre of the fovea (chi 2 = 29.97). Of the 10 treated eyes that showed activation, 4 did so within 1 month, which suggests that prophylactic photocoagulation may not be without risk of complications.

Chorioretinitis↗
PubMed1981

Photocoagulation as the sole treatment for early posterior retinal detachment.

Three eyes of two patients with posterior retinal detachments associated with high myopia were treated with photocoagulation therapy only. Complete flattening of the retina was achieved in all eyes. Chorioretinal contact did not appear to be required in order for photocoagulation therapy to be effective. Although initially confined to rest, it was apparent that bed rest was not essential for the gradual absorption of subretinal fluid. Posterior vitreous detachments were present in all eyes. Although visual acuities were not greatly improved, subjective improvement was considered excellent in all cases.

Adult↗
PubMed1981

[The evaluation of the Harrington technique in the treatment of double-curved scoliosis (author's transl)].

Double-curved scoliosis was present in 18.5 of 750 scolioses operated on at the St. Justine Hospital in Montreal. 128 cases were reviewed with a follow up of more than 3 years. Pre-operative curves measured 61 and 58 degrees on average and post-operative curves measured 27 and 23 degrees. At the time of review, the curves were 39 and 36 degrees. The loss of correction varied with the age of the patient and the severity of deformity. The technique of early ambulation improved the post-operative results. However, it was concluded that compression rods did not provide a better correction of the curve or of the thoracic kyphosis.

Adolescent↗
PubMed1978

Retinal detachment in renal insufficiency a report of 3 cases.

Three cases of retinal detachment associated with renal insufficiency are presented. The authors feel that dilutional hyponatremia and hypervolemia were not significant in the genesis of the detachments and that control of the blood pressure was the key factor in their cure. The importance of hypertensive retinochoroidopathy in the pathogenesis of the detachment is emphasized.

Adult↗
PubMed1977

Retinal detachment following hockey injury.

Thirty-three cases of retinal detachment following hockey injury were seen during a 15-year period at the retina clinic of Maisonneuve-Rosemont Hospital, Montreal. Most injuries occurred in adolescents, the average age being 18 years. The mean interval between injury and preoperative examination was 3 years. Almost half of these young hockey players remained legally blind in the affected eye even after a successful operation. A helmet with a protective face visor is suggested as the best prevention against severe ocular damage such as retinal detachment.

Adolescent↗
PubMed1975

Retinal detachment after strabismus surgery.

Four nonmyopic eyes in three patients developed retinal detachment after strabismus surgery. Certain features common in all four eyes included the presence of a chorioretinal scar corresponding in location to the muscle operated on, proliferating fibrous tissue adjacent to the scar, and varying degrees of vitreous hemorrhage. These findings were similar to those in retinal detachments after perforation of the eye by foreign bodies. Penetration of the globe by the needle during muscle surgery was considered the etiologic factor. The use of spatula needles to prevent piercing of the globe is suggested, and in case such accident is suspected, diathermy or cryoapplication over the perforation site is advised.

Adult↗