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Biomedical subjects

D Bonneau

Publications and source records attributed to D Bonneau.

101 records · Page 6Linked to original sources
PubMed1987

Cryptosporidium oocysts in immunocompetent children: epidemiologic investigations in the day-care centers of Poitiers, France.

The recent discovery of self-resolving Cryptosporidium infection in immunocompetent patients has aroused growing interest in this parasite, which has thus far been known to affect mainly immunodeficient individuals. Following the hospitalization of two children attending the same day-care center in February 1986 Cryptosporidium oocysts were found in the stools of one of them. This led to an epidemiological investigation to assess the frequency of Cryptosporidium oocysts in the stools of children attending the 7 day-care centers in the city of Poitiers, France. Testing for Cryptosporidium oocysts was performed on formalinized stools, after smear staining by the modified Ziehl-Neelsen procedure. Each positive stool was also submitted to virological and bacteriological examination. Stool specimens from 235 children were studied: 9 (3.8%) of them had Cryptosporidium oocysts in their stools. Four of the children had diarrhea, and 5 (2.2%) were asymptomatic. The existence of healthy carriers should lead to caution in the interpretation of stool parasitology.

Animals↗
PubMed1983

[Plasmodium falciparum malaria acquired in Kenya with type II or type III resistance to amino-4-quinolines].

The authors report a case of Plasmodium falciparum malaria acquired in Kenya by a French tourist under correct chloroquine prophylaxis. She recovered under quinine and a sulfadoxine-pyrimethamine association. This is a new case of high level resistance (R II or R III) of Plasmodium falciparum to amino-4-quinolines recognized in East Africa. Malarial chemoprophylaxis recommended until now for this area may need to be reviewed.

Adult↗
PubMedDate not supplied

[An unusual polymalformation syndrome: "CHARGE association" with unilateral "morning glory syndrome"].

Report of a case of the "CHARGE association" including bilateral papillary coloboma, with an aspect of "morning glory syndrome" on one side. Clinical features of the "CHARGE association" are described; pathogenesis is likely involving cells of neural crests. Discussion, in this field, of the ocular and systemic abnormalities associated with "morning glory syndrome".

Abnormalities, Multiple↗
PubMedDate not supplied

A five year study of the incidence of valve-related complications with the Omniscience cardiac prosthesis.

A total of 228 Omniscience cardiac valve prostheses were implanted in 210 patients at two hospitals in Canada from November, 1979 to August, 1984. The 184 operative survivors were followed for a mean duration of 28.5 months (maximum 62.7 months) and for a total of 438 patient-years. Actuarial analysis for AVR, MVR, and all patients showed survival probabilities at five years of 97.2%, 98.9%, and 97.0% respectively. The five-year actuarial probabilities of remaining free of any thrombotic complications were 96.9% for AVR, 96.4% for MVR, and 95.7% overall. When considering only serious thrombotic complications (thromboembolism with deficit or valve thrombosis), the event-free rates are 100% for AVR, 98.9% for MVR, and 98.6% for the overall patient group at five years. These rates for survival and freedom from thrombotic complication demonstrate the clinical safety and effectiveness of the Omniscience prosthesis. In addition, there were no cases of structural failure or intrinsic mechanical malfunction of the prosthesis.

Anticoagulants↗
PubMedDate not supplied

Medications exposure during pregnancy. A study in a university hospital.

To collect informations about drugs prescribed during pregnancy in France we carried out a retrospective survey from august to december 1989. This study was based on a questionnaire at delivery for 225 women. Socio-economic status, obstetrical past history and patterns of prescribing medications were studied. 99.5% of the women were found to have used drugs during pregnancy with a mean of 6.84 medications per woman. There was no influence of age, geographic origins, number of previous pregnancies on drug consumption; socio-professional status was also found to have a poor correlation with drug intake. Patterns of prescribing were compared to those of a previous French study made in 1976: changing pattern of prescribing were found for progestatives, corticoids, neurotropes, aspirin and beta adrenergic agents. We also pointed out that self-administered drugs decreased from 25.9 to 17.9%. This evaluation supports the need of further epidemiological studies in our country.

Drug Prescriptions↗
PubMedDate not supplied

A YAC contig spanning the blepharophimosis-ptosis-epicanthus inversus syndrome and propionic acidemia loci.

Blepharophimosis-ptosis-epicanthus inversus syndrome (BPES) is an autosomal dominant condition consisting of congenital dysplasia of the eyelids with a reduced horizontal diameter of the palpebral fissures, droopy eyelids and epicanthus inversus. Two clinical entities have been described: type I and type II. The former is distinguished by female infertility, whereas the latter presents without other symptoms. Both type I and type II were recently mapped on the long arm of chromosome 3 (3q22-q23), suggesting a common gene may be affected. The centromeric and the telomeric limits of this region are well defined between loci D3S1316 and D3S1615, which reside approximately 5 cM apart. Here, we present the construction of a YAC contig spanning the entire BPES locus using 17 polymorphic markers, 2 STS and 28 ESTs. This region of approximately 5 Mb was covered by 31 YACs, and was supported by detailed FISH analysis. In addition, we have precisely mapped the propionyl-CoA carboxylase beta polypeptide (PCCB), the gene mutated in propionic acidemia, within this contig. Apart from providing a framework for the identification of the BPES gene, this contig will also be useful for the future identification of defects and genes mapped to this region, and for developing template resources for genomic sequencing.

Amino Acid Metabolism, Inborn Errors↗