Biomedical subjects

Y LaPierre

Publications and source records attributed to Y LaPierre.

3 recordsLinked to original sources

PubMed1994

[Gel tests and their evolution].

The gel test is born in 1984. Its evolution can be described in three steps: development of a marketable product by the Diamed company improvement of this product, and development of new products based on the same process by competitors. Its main application is the antiglobulin test applied to antibody detection and identification, for which results are more reliable with this test, especially in routine. It can also be used in blood grouping, mainly for specific needs. Other applications are still being developed. Finally, the gel test has contributed to a change in practice at the immunohematological laboratory and has opened the door to further new technologies.

Antibodies↗

PubMed1993

Intermittent cyclophosphamide pulse therapy in progressive multiple sclerosis: final report of the Northeast Cooperative Multiple Sclerosis Treatment Group.

Previous studies reported that a 2- to 3-week course of IV cyclophosphamide plus adrenocorticotropic hormone (ACTH) induction can temporarily halt progressive MS for a period of 12 months in the majority of patients treated, after which reprogression occurs. The Northeast Cooperative Multiple Sclerosis Treatment Group was formed to determine whether outpatient pulse cyclophosphamide therapy could affect reprogression and whether there were differences between a modified induction regimen and the previously published regimen. Two hundred fifty-six progressive MS patients were randomized into four groups to receive IV cyclophosphamide/ACTH via the previously published versus a modified induction regimen, with or without outpatient IV cyclophosphamide boosters (700 mg/m2 every other month for 2 years). There were blinded evaluations performed every 6 months. Results demonstrate that (1) there were no differences between the modified and the published induction regimens either in terms of initial stabilization or subsequent progression; (2) without boosters, the majority of patients continued to progress; and (3) in patients receiving boosters, there was a statistically significant benefit at 24 months and 30 months (p = 0.04). Time to treatment failure after 1 year was also significantly prolonged in the booster versus the nonbooster group (p = 0.03). Age was the most important variable that correlated with response to therapy in that amelioration of disease progression occurred primarily in patients 40 years of age or younger. Boosters had a significant benefit on time to treatment failure in patients ages 18 to 40, p = 0.003, but not in patients ages 41 to 55, p = 0.97.(ABSTRACT TRUNCATED AT 250 WORDS)

Adrenocorticotropic Hormone↗

PubMed1981

Phenelzine and exposure in the treatment of phobias.

A double-blind study was carried out on 40 agoraphobic and socially phobic patients, matched, then randomly assigned to one of four treatment groups; phenelzine-exposure, phenelzine-no exposure, placebo-exposure, and placebo-no exposure. Exposure consisted of encouraging the patient to face the phobic situation a predetermined number of times. Assessments, made at the beginning and end of 8 weeks of therapy and 8 weeks thereafter, showed that the phobia ratings of groups decreased significantly. The combined exposure group improved significantly more than the combined no exposure group during treatment. At 8 weeks follow-up there was some deterioration in the phenelzine-exposure and placebo-no exposure groups. Exposure, with or without phenelzine, was the superior treatment modality. The antiphobic effect of phenelzine was not supported, although it seemed to reduce subjective anxiety during exposure experiences. The possibility that effect of phenelzine is dose-related is discussed.

Adolescent↗