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Biomedical subjects

S Badawy

Publications and source records attributed to S Badawy.

At least 19 recordsLinked to original sources
PubMed1997

Perceptual and coping processes across the menstrual cycle: an investigation in a premenstrual syndrome clinic and a community sample.

Patients from a premenstrual symptoms clinic and asymptomatic controls monitored perceived stressors, coping processes, and emotional and physical symptoms daily for a complete menstrual cycle. Within-group comparisons revealed that, premenstrually, the patients reported encountering a greater number of personal competency stressors than they did postmenstrually. Between-group comparisons indicated that the patients encountered more stressors and perceived them as more stressful during the premenstruum than controls did, whereas postmenstrually the groups showed no difference in perceptual style. The patients used situational redefinition as a coping process during the premenstrual phase less frequently than the controls did. We observed positive relationships for patients between daily stressors and emotional and physical symptoms both premenstrually and postmenstrually. For controls, the only relationship demonstrated was that depression was associated with perceived stressfulness of stressors during the premenstrual phase. Results are discussed in the context of psychosocial factors (stressors, appraisal, and coping processes) influencing the manifestation of premenstrual symptoms.

Adaptation, Psychological↗
PubMed1988

Carbon dioxide laser laparoscopy by means of a 3.0-mm diameter rigid wave guide.

Rigid carbon dioxide wave guides measuring 300 to 500 mm in length and 3.0 mm in diameter were evaluated in rabbits and humans. The wave guide provided an effective laser delivery system for operative laparoscopy. The tested guide was introduced into the abdominal cavity alternatively via the operating channel of a 9-mm operating laparoscope, through the central channel of a smoke evacuation/irrigation cannula, or via a 3.25-mm second puncture trocar. In contrast to previously tested flexible guides, the rigid device transmitted a visible helium-neon aiming beam, power up to 50 watts, and a beam diameter of less than 1 mm. The hollow guide was kept free of smoke by-products by continuous purging with carbon dioxide gas flowing at 800 to 1000 cc per minute. All wave guides could be sterilized by ethylene oxide gas or Cidex (Surgikos, Arlington, TX) soaking. Fourteen women with a variety of reproductive disorders underwent laser laparoscopy. The rigid wave guide was fired at distances ranging from less than 1 mm to 30 mm from the target and performed with maximal impact at distances of 3 to 5 mm. Perhaps the greatest advantage of this system is its ability to focus-defocus while directly coupling to the handpiece of standard lasers and requiring no special alignment procedures.

Animals↗
PubMed1987

Carbon dioxide laser laparoscopy performed with a flexible fiber in humans.

A flexible carbon dioxide laser fiber delivery system was used in conjunction with the laparoscope to treat 12 women. The 77 by 2 mm hollow fiber could subtend an arc of 90 degrees without significant loss of power or unfavorably affecting the delivery mode. As many as 20 W of power was transmitted through the fiber; however, carbon dioxide gas flow rates as high as 2000 cc/min reduced power by approximately 25%. Replaceable tips preserved fiber integrity to the extent that a single fiber could be reused repeatedly and gas sterilized without jeopardizing laser transmission. Of the 12 cases, endometriotic implants were vaporized in eight women, adhesiolysis was performed in four women, endometrial cysts were drained in two women, and vaporization of myomata was accomplished in two patients. The fiber was also used as a manipulating instrument and could be internally bent with a grasping forceps to better site the laser beam on a lesion. No complications related to the use of the carbon dioxide laser fiber were observed. The safety aspects of carbon dioxide laser fiber technology are not inconsiderable and could provide laser laparoscopy with an extra margin of security.

Beryllium↗
PubMed1978

Effect of oestrogen on fetal survival in the rabbit.

Pregnant rabbits (Day 18) were treated i.m. for 3 days with 10 microgram oestradiol 17beta/kg. The number of dead fetuses was significantly greater than in the control animals but corpus luteum weight and peripheral progesterone concentrations were not affected. Fetal death was therefore not due to luteolysis.

Animals↗
PubMed1976

Prostatic acid phosphatase. Current assessment in vaginal fluid of alleged rape victims.

Although elevated prostatic acid phosphatase activity (ACP) in vaginal fluid is compatible with recent coitus, the finding of spermatozoa in vaginal fluid is usually considered the diagnostic indicator for semen. When 80 alleged rape cases during an 18-month period were reviewed and the results of cytologic examination for the presence of spermatozoa compared with quantitative ACP determinations, the latter appeared to be a more reliable and sensitive indicator of semen. The normal range of ACP in semen, as well as persistence of ACP in vaginal fluid, was also defined. It is concluded that vaginal fluid ACP is a reliable and sensitive method for identification of semen. Furthermore, the results confirm that quantitative ACP determination of vaginal fluid specimens may substantiate the allegation of rape with respect to time.

Acid Phosphatase↗
PubMed1975

Biologic effects following active immunization with delta 5-3 beta-hydroxysteroid dehydrogenase.

Immunization of female rats with crude preparations of delta 5-3 beta-hydroxysteroid dehydrogenase combined with complete Freund's adjuvant resulted in suppression of the endogenous enzyme activity in the ovarian interstitial tissue and the corpora lutea. As a result, estrous cyclicity, nidation, or maintenance of pregnancy was adversely affected in proportion to the level of the antibody to the enzyme following the series of immunizations. On the basis of the biologic response, it can be assumed that progesterone synthesis was reduced as a result of neutralization of enzyme action in the ovary by the formation of antibodies to the delta 5-3 beta-hydroxysteroid dehydrogenase. Further studies are required to verify this assumption.

3-Hydroxysteroid Dehydrogenases↗