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Biomedical subjects

R Uras

Publications and source records attributed to R Uras.

10 recordsLinked to original sources
PubMed2006

[When should we treat infertility and how should we determine the degree of urgency?].

The successes of assisted reproductive treatments (ART) have been amply documented. Yet, there is no clear consensus as to who are the couples who need ART and with which degree of urgency, short of course of those suffering from definitive tubal infertility or severe male factor. Determining the degree of medical urgency for deploying ART approaches is of true clinical concern. In case of occult forms of ovarian failure (not symptomatic short of infertility itself), delaying treatment may lead to definitive failure. Conversely, if infertility results from ovulatory disorders brought by stress, postponing ART for a few months may bring spontaneous pregnancies. The recent introduction of anti-mullerian hormone (AMH) testing is of significant help for assessing the degree of ovarian reserve.

Female↗
PubMed2006

[Synchronisation of the menstrual cycle and ovarian follicles: interest and benefit].

In the menstrual cycle, a slight elevation of plasma FSH levels, the inter-cycle FSH signal, initiates the 1st phase of follicular recruitment. In ovarian stimulation for IVF, exogenous FSH aims at increasing the amplitude of this signal while maintaining FSH levels elevated, in order to fool the natural mechanisms of single follicular dominance. Synchronization consists in maintaining plasma FSH levels low so that all recruitable follicles remain at a resting state, prior to inducing ovarian stimulation. Practically speaking, synchronization of ovarian follicles allows to optimize clinical efforts, reduces the risk of cyst formation and ultimately, helps improving IVF outcome.

Female↗
PubMed1996

Clinical study of disposable contact lens wear: Brazilian experience.

PURPOSE: The objective of this study was to analyze prospectively the continuous use of disposable contact lenses. METHODS: We conducted a clinical study of extended wear of disposable contact lenses for a period of 7 days and 6 nights by 25 patients during a 90-day period. Factors such as visual acuity, keratometry, complications, and contamination were analyzed. RESULTS: Visual acuity and keratometry measurements did not present significant alterations during the study. Complications related to the use of disposable contact lenses were not observed. Analysis of cultures did not present any significant microbiological alterations due to contact lens use. All of the patients were satisfied with the wear schedule and considered the Acuvue lenses comfortable. CONCLUSIONS: Our results may be useful in increasing the level of acceptance of extended wear of disposable contact lenses in Brazil.

Adult↗
PubMed1995

Bacterial contamination in soft contact lens wearers.

We prospectively analyzed bacterial contamination in 15 soft contact lens wearing subjects. Contact lenses, cases, tips of saline solution bottles, and conjunctiva were cultured. Cultures were positive for 13 subjects (86.6%). Contamination was present in 13 contact lens cases (86.6%), 12 contact lenses (80.0%), nine saline solution bottles (60.0%), and in the conjunctiva of three patients (20.0%). Gram-negative bacteria (Pseudomonas aeruginosa and Proteus mirabilis) were the most frequently isolated organisms. Staphylococcus aureus was the only gram-positive organism isolated. We discuss the possible sources of contamination, and emphasize the importance of contact lens care instruction.

Adolescent↗
PubMed1995

Educational program on ophthalmology.

To minimize the learning problems, related to the present teaching method, we developed the Educational Program on Ophthalmology, that offers an interactive and self-controlled way of learning, through the multimedia and hypertext (hypermedia) resources to the students. The software has 200 images (pictures and photos), 40 minutes of digitized voice (.WAV), 50 minutes of video animation (.AVI) and more than 200 links. The first evaluation demonstrated a great interest from the medical graduated students, who feel motivated with the utilization of the software.

Animals↗
PubMed1986

[Double-blind cross-over comparison of flurbiprofen and indomethacin in osteoarthritis of the knee and hip].

A randomised double blind cross-over study was conducted in order to compare the therapeutic efficacy and tolerability of flurbiprofen and indomethacin in 16 patients with osteoarthrosis of the knee or hip. 300 mg per diem flurbiprofen and 150 mg per diem indomethacin were given for 14 days. Both treatment were very effective against pain whether spontaneous, under pressure or in movement and against functional limitations, joint mobility and on ESR. Undesirable side effects were noted in 4 flurbiprofen and 5 indomethacin cases.

Adolescent↗
PubMed1983

Double-blind comparison of glucametacin and ketoprofen in chronic arthropathies.

A new, non-steroidal anti-inflammatory agent, glucametacin, was compared with ketoprofen in a double-blind, crossover trial. The drugs were given in total daily doses of 420 mg glucametacin and 300 mg ketoprofen for 20 days to 30 patients with chronic arthropathies of an inflammatory or degenerative nature. Both drugs were well tolerated and resulted in significant improvements in a number of criteria of disease assessment. Although there were no significant differences between results seen with the two drugs, there appeared to be trends in favour of glucametacin in respect to both efficacy and tolerance.

Adult↗
PubMed1983

[Effects of chrysotherapy on various immunological parameters in rheumatoid polyarthritis].

The effects of chrysotherapy on various immunological parameters were studied in 60 cases of rheumatoid arthritis, either classical or as defined by the ARA. There was a significant fall in serum immunoglobulin levels and in rheumatoid factor. The serum levels of C3 and C4 did not show any significant modifications. At the same time, the serum albumin level rose, suggesting that gold salts do not inhibit protein synthesis. There was a reduction in the total number of leukocytes, affecting lymphocytes more than polymorphs. Finally, there was no significant modification of the response to mitogenes during chrysotherapy. The increase in the lymphocyte response to PHA coincided with improvement in the disease.

Adult↗
PubMed1982

[Serum gastrin in rheumatoid arthritis].

Serum gastrin concentrations under basal conditions and following stimulation were assessed in 40 patients suffering from rheumatoid arthritis (RA) and compared with healthy individuals. The RA groups showed no significant differences in comparison with the control population. These conclusions lead the authors to seek the reasons for the rare instances of confirmed hypergastrinaemia in RA.

Adolescent↗