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Biomedical subjects

G Bally

Publications and source records attributed to G Bally.

12 recordsLinked to original sources
PubMed2005

Dynamics of sulfate-reducing microorganisms (dsrAB genes) in two contrasting mudflats of the Seine estuary (France).

By combining molecular biology and biochemical approaches, the dynamics of sulfate-reducing microorganisms (SRM) was investigated in the sediments of the Seine estuary (France). Both intertidal mixing-zone and freshwater mudflats were sampled during a 1-year period; the quantification of SRM was realized by using competitive polymerase chain reaction (PCR) based on dsrAB gene amplification, previously described by Leloup et al. (2004), and sulfate reduction rate (SRR) was determined via the SO4(2-) radiotracer method. Throughout the year, abundance of dsrAB genes and SRR were predominantly high in the top 15 cm of the sediment. A seasonal dynamic was observed; a predominance of activity was noted during the early summer, and seems to be mainly controlled by physical-chemical parameters (temperature and dissolved organic carbon concentration) and topographic evolution of the mudflat (erosion/deposit erosion).

Bacteria↗
PubMed1999

Experience in treating persons with HIV/AIDS and the legalization of assisted suicide: the views of Canadian physicians.

The objective of this study is to determine the opinions of a random sample of Canadian family physicians and a population of non-specialist physicians known to provide care to persons with HIV/AIDS about the legalization of physician assisted suicide for persons with HIV disease. In addition, we have attempted to ascertain the physician characteristics that may be associated with a favourable or negative opinion. Self-administered, anonymous questionnaires were mailed to 2,890 family physicians across Canada. Logistic regression analysis was used to determine whether physician characteristics were predictive of agreement with the legalization of physician assisted suicide. Of the respondents who had an opinion, 60% agreed with the legalization of physician assisted suicide. Multivariate analyses indicated that physicians who were living in the provinces of British Columbia (BC), Ontario, or Québec (OR = 1.63, 95% CI: 1.10, 2.43) and who provided routine follow-up care (OR = 1.85, 95% CI: 1.30, 2.63) or palliative care (OR 1.66, 95% CI: 1.13, 2.44) to those with HIV disease were more likely to agree with legalization of physician assisted suicide. This analysis demonstrates a strong support for the legalization of physician assisted suicide for persons with HIV disease among physicians experienced in providing care to those affected.

Acquired Immunodeficiency Syndrome↗
PubMed1997

HIV/AIDS care giving physicians: their experience and practice patterns.

To identify associations between HIV-related experience and patterns of service provision, physicians across Canada were solicited by mail to register in a national network of HIV/AIDS care givers. Respondents provided data about: personal, demographic and practice characteristics; the number of HIV-positive patients ever seen; the nature of the HIV-positive client population; and services provided to HIV-positive patients. Univariate techniques provided a demographic and professional profile of participating physicians. Logistic regression was used to identify associations between level of HIV-related experience and the provision of patient services. The 566 registered physicians have provided care to 56,378 HIV-infected persons and represent every province and territory in Canada. Multivariate analysis revealed that highly experienced physicians were more likely to provide all 3 types of services considered, to practise in Montreal, Vancouver or Toronto, and to be medical specialists (all P < 0.001).

Acquired Immunodeficiency Syndrome↗
PubMed1996

Qualitative evaluation of the Canadian Medical Association's counselling guidelines for HIV serologic testing.

OBJECTIVE: To evaluate the face and content validity of the CMA's counselling guidelines for HIV serologic testing in order to prepare a revised edition. DESIGN: Qualitative evaluation by structured focus groups in September and October 1994 to assess the relevance, clarity and practicality of the guidelines, followed by content analysis of the discussions. SETTING: Vancouver, Winnipeg, Toronto, Montreal, Quebec City and St. John's. PARTICIPANTS: Primary care physicians randomly selected from the CMA database and nonrandomly selected from the Canadian Medical Directory who had limited experience with HIV testing and counselling and who provided an appropriate mix of characteristics in terms of practice type (solo and group), setting (urban and rural), age and sex. A total of 1247 physicians were approached for the study; a convenience sample of 68 were recruited, of whom 56 participated. The average size of each focus group was eight physicians. OUTCOME MEASURES: Clinical experience and information sources with respect to HIV testing, reactions to the counselling guidelines, and suggestions for revisions and improvements to the guidelines. RESULTS: Most (96% [54/56] of the participants had ordered HIV serologic testing for patients in the 6 months preceding the focus groups, and about half of them (52% [28/54]) had at least one patient with a positive test result. Many (59% [33/56]) of the participants had a copy of the guidelines at the time of recruitment; 19 (58%) of them had used the guidelines in the months before the focus groups. The parts of the guidelines most often read were the checklists and inset boxes. Recommendations for revisions in content were for more information on legal and ethical issues, information on new issues (e.g., rapid testing) and guidelines on how best to tell a patient about a positive test result; recommendations for revisions in format included more tables, algorithms, bulleted points and white space, less text, larger type and plainer language. CONCLUSIONS: The focus groups provided detailed, credible and consistent information about the face and content validity of the HIV counselling guidelines. They are a useful qualitative method for evaluating the relevance, clarity and practicality of clinical practice guidelines at the inception or revision stage.

AIDS Serodiagnosis↗
PubMed1993

Caring for patients with HIV infection. Management plan for family physicians.

Caring for and treating patients living with human immunodeficiency virus is challenging for busy family physicians. I present one strategy for managing patients with this complex infectious disease. Using averaged T4 blood cell counts as a marker of disease progression, I use antiretroviral treatment and preventive drug therapy against the complications of HIV infection.

AIDS-Related Opportunistic Infections↗
PubMed1977

Comparative morphological investigation on the rabbit's auricle after exposure to CO2- and Nd:YAG-laser radiation.

By comparing the effects of CO2- and Nd:YAG-laser radiation (mainly differing in wave-length by a factor of 10), a surgical instrument suitable for Otorhinolaryngology had to be found. The studies were performed on the rabbit's auricle in order to examine the effect of the laser irradiation mainly on the cartilage. The CO2-laser was found to be more efficient in cutting and caused less extended tissue damage than the Nd:YAG-laser. The latter seems to be more suitable for soft tissue surgery.

Animals↗