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Biomedical subjects

M Kaminski

Publications and source records attributed to M Kaminski.

At least 109 records · Page 6Linked to original sources
PubMed1991

Attitudes toward condom use and AIDS among patients from an urban family practice center.

As part of an effort to better educate patients about using condoms, a survey was done to assess the sexual practices, attitudes toward acquired immunodeficiency syndrome (AIDS) and condom use by patients who visit an urban family practice center. A self-administered questionnaire was given to 126 patients of whom the majority were black and single. Seventeen percent indicated they had sex with more than one person in the 3 months before the survey. Within the last 5 years, 10% had sex with an intravenous drug abuser, and 6% with someone of the same sex. Fifty percent believed that condoms decrease sexual pleasure for men and 31% thought condoms made sex inconvenient. Twenty-seven percent of those surveyed believed that a man's penis may be too large for a condom and 18% believed that uncircumcised men could not use condoms. Forty-five percent believed they should be screened for human immune deficiency virus exposure. The results highlight attitudes and beliefs that may function as barriers to condom use and should be addressed when encouraging condom use with this population.

Acquired Immunodeficiency Syndrome↗
PubMed1991

Evidence for thrombin enhancement of fibrin polymerization that is independent of its catalytic activity.

Inhibition of thrombin proteolysis of fibrinogen with D-phenylalanyl-L-propyl-L-arginine chloromethyl ketone (PPACK) results in irreversible inactivation of the thrombin catalytic site, but the PPACK-inhibited thrombin, through its exosite, retains its ability to bind to fibrinogen or fibrin. Hirudin inactivates thrombin at the catalytic site and also inhibits thrombin exosite binding to fibrin or fibrinogen. PPACK or hirudin was added to a clotting mixture of fibrinogen and active thrombin (enzyme-to-substrate ratio = 1:400 at ionic strength of 0.14; 1:800 at ionic strength of 0.09) before the onset of gelation. Subsequent fibrin assembly was evaluated by turbidity measurements at 350 nm and by determining the fibrin and fibrinogen content of the clots that ultimately formed. Polymerization rates and the fibrin-fibrinogen content of the clots that formed were greater in the PPACK-inhibited system than in the hirudin-inhibited system, and the effect was amplified at the lower ionic strength. PPACK-thrombin also promoted the polymerization of native or prepared mixtures of fibrin and fibrinogen. The results suggest that in addition to its well-recognized role in the proteolytic conversion of fibrinogen to fibrin, thrombin functions through exosite binding to fibrin as a cofactor in fibrin polymerization by accelerating fibrin clot assembly.

Amino Acid Chloromethyl Ketones↗
PubMed1991

[Working conditions of women with arterial hypertension during pregnancy].

The relationship between working conditions and arterial hypertension (blood pressure greater than or equal to 140.90 Hg) during pregnancy has been studied from a representative sample of births in France in 1981. The study sample consisted of 2,587 women who had worked beyond the first trimester of pregnancy. The rate of arterial hypertension was 11%: it was higher for women who had to carry heavy loads or who worked in noisy environment, even if known risk factors of hypertension were taken into account. This relationship is obvious for women who were exposed for a long time--working hours or length of employment. Noise and carrying heavy loads seem related to arterial hypertension at different stages of the pregnancy, as if the physiological processes related to these two working conditions were different.

Adult↗
PubMed1990

Postnatal treatment of rats with the beta 2-adrenergic agonist salbutamol influences the volume of the sexually dimorphic nucleus in the preoptic area.

Sexual differentiation of the brain seems to be influenced by postnatal interaction of gonadal steroids with neurotransmitter systems, in particular the adrenergic system. Stimulation or inhibition of adrenergic receptors during early postnatal development had previously been shown to influence steroid-induced sexual differentiation of rat brain function. In the present study newborn male and female rats were treated daily for 5 days with salbutamol, a specific beta 2-receptor agonist, or with alprenolol, a beta-receptor antagonist and the volume of the sexually dimorphic nucleus of the preoptic area (SDN-POA) was examined in adulthood. This nucleus, one of the most striking sex differences in brain anatomy, is several-fold larger in male than in female rats. Postnatal treatment with salbutamol increased SDN-POA volume in female and in male rats. The effect was particularly striking in males, because any previous pre- and/or postnatal treatment of male rats with large amounts of gonadal steroids had been unable to increase the volume of the SDN-POA above normal. The beta-receptor antagonist alprenolol had no effect on SDN-POA differentiation. The results indicate that beta 2-adrenergic stimulation influences development and differentiation of the SDN-POA.

Albuterol↗
PubMed1990

Strenuous working conditions and musculo-skeletal disorders among female hospital workers.

The relations between working conditions and various aspects of health among female hospital workers were studied in 26 departments of large hospitals in the Paris area in 1986; 90% of the workers of these departments filled in a questionnaire about their working conditions, sociodemographic characteristics and health in the previous 12 months and attended a medical examination. The study sample included 1505 women. The main cause of sick leave was musculoskeletal disorders and affected 16% of the women. Back pain was described by 47% of the women, and treatment for musculo-skeletal disorders by 28%. Three working conditions were considered to characterize the posture at work: standing more than six hours a day, bending over more than ten times per hour, and maintaining an uncomfortable posture. A cumulative posture index was constructed by adding for each worker the number of the working conditions to which she had been exposed. A cumulative lifting index was constructed in a similar way from the four following characteristics: lifting weights of more than 15 kg, lifting patients more than ten times a day, making beds normally or often, and pushing beds or trolleys more than ten minutes a day. A mixed index was then constructed associating the two previous ones. The relations between these indexes and musculoskeletal disorders (MSD) were studied after adjustment for potential confounders such as age, obesity, number of children, travel duration, sport practice, occupational level, number of years in the occupation, previous attack of back pain, and mental health (assessed by the score to the general health questionnaire). The logistic regressions of MSD indicators on the mixed index and other risk factors showed that MSD was about twice as frequent among women with a maximal load in posture and/or in lifting than among women with no more than one medium index (tiring posture or lifting). These facts support the necessity for improvement of the work load in hospitals.

Absenteeism↗
PubMed1990

Prediction of preterm delivery: is it substantially improved by routine vaginal examinations?

The ability of routine vaginal examinations to improve the prediction of preterm delivery was assessed in a group of 6909 women who were registered at each prenatal visit and on whom this examination had been carried out. We compared two risk scores, one including known risk factors (maternal characteristics and symptoms reported by women), and the other including these factors and the findings of vaginal examination. These risk scores were computed by multiplying the adjusted odds ratio estimations obtained by logistic regressions. The prediction of preterm delivery was improved significantly by vaginal examination at 25 to 28 weeks' and 29 to 31 weeks' gestation. However, the improvement was not very large: when 30% of nulliparous women were classified as high risk at 29 to 31 weeks, the sensitivity was 55% when considering only the risk factors and 63% when adding the findings of vaginal examination; the percentages were 52% and 55%, respectively, for parous women. These results partially explain why the medical practice of routine vaginal examinations varies from country to country.

Adolescent↗
PubMed1990

Psychosocial consequences of caesarean childbirth: a four-year follow-up study.

This paper describes the last part of a study on the long-term psychosocial consequences of caesarean delivery. One group of 103 primiparous caesarean delivered women and one control group of 103 women delivered vaginally were followed from delivery to the children's fourth birthday. Previous assessments were made at birth, two months and one year later (Garel, M., Lelong, N. and Kaminski, M. (1987) J. Psychosom. Obstet. Gynecol., 6, 197-209 and (1988) Early Hum. Dev., 16, 271-282). Four years after delivery, 58 mothers of the caesarean group and 50 mothers of the control group returned a completed questionnaire. The questionnaire included questions about subsequent pregnancies and mother's and child's general state of health. The comparisons between respondents and non-respondents showed no significant difference with regard to social and medical factors. As far as possible, factors which might have interfered with the mothers' and children's conditions were controlled in the analysis. There was no association between the method of delivery and the mother's overall state of health. However, after a caesarean section, mothers tended to have fewer children and more difficulty in conceiving. Four years after delivery, mothers in the caesarean group reported fatigue more frequently than control mothers. Five mothers (9%) consulted a psychiatrist, none in the control group (P less than 0.09). Between one and four years, caesarean born children had more hospital admissions but their overall behaviour and development, as reported by the mothers, was not different from those of children in the control group.

Cesarean Section↗
PubMed1990

The acceleratory effect of thrombin on fibrin clot assembly.

Inhibition of thrombin proteolysis of fibrinogen with D-phenylalanyl-L-propyl-L-arginine chloromethyl ketone (PPACK) results in irreversible inactivation of the thrombin catalytic site, but the PPACK-inhibited thrombin, through its exosite, retains its ability to bind to fibrinogen or fibrin. Hirudin inactivates thrombin at the catalytic site and also inhibits thrombin exosite binding to fibrin or fibrinogen. PPACK or hirudin was added to a clotting mixture of fibrinogen and active thrombin (enzyme:substrate ratio, 1:400 and 1:800) prior to the onset of gelation. Subsequent fibrin assembly was evaluated by turbidity measurements at 350 nm and by determining the fibrin and fibrinogen content of the clots that ultimately formed. Polymerization rates and the fibrin/fibrinogen content of the clots that formed were greater in the PPACK-inhibited system than in the hirudin-inhibited system. Lowering the ionic strength from 0.14 to 0.09 amplified these differences. The results suggest that in addition to its well-recognized role in the proteolytic conversion of fibrinogen to fibrin, thrombin functions as a cofactor in the fibrin assembly process.

Amino Acid Chloromethyl Ketones↗
PubMed1990

Implementation of the Federal Hazard Communication Standard: does training work?

A joint labor-management training program intended to bring a large US manufacturing firm into compliance with the training requirements of the Federal Hazard Communication Standard appeared to achieve increases in employee knowledge and improved work practices. The program also evidenced positive indirect effects on management's institution of hazard control measures and organizational handling of health and safety issues. Most observed effects were maintained over a 2-year period after the training. More interactive, trainer-intensive delivery methods to smaller groups were associated with more positive effects on reported training usefulness and changes in work practices and working conditions.

Hazardous Substances↗
PubMed1990

Alcohol use in pregnancy, craniofacial features, and fetal growth.

STUDY OBJECTIVE: The aim was to study the relationship between the level of alcohol consumption in pregnancy and craniofacial characteristics of the neonate. DESIGN: This was a prospective survey of a sample of pregnant women, stratified on prepregnancy level of alcohol consumption. SETTING: The study was carried out at the public antenatal clinic of Roubaix maternity hospital. PARTICIPANTS: During an eight month period, 684 women (89% of those eligible) were interviewed in a standardised way at their first antenatal clinic visit. Of these, all who were suspected of being alcoholic or heavy drinkers (at least 21 drinks per week) were selected for follow up, as was a subsample of light (0-6 drinks per week) and moderate (7-20 drinks per week) drinkers. Of 347 women selected in this way, 202 had their infants assessed by a standardised morphological examination. MEASUREMENTS AND AND MAIN RESULTS: Suggestive craniofacial characteristics of the infants, present either in isolation or in association with growth retardation ("fetal alcohol effects"), were compared in relation to maternal alcohol consumption (alcoholic 12%; heavy drinking 24%; moderate drinking 28%; light drinking 36%). No differences were found between light and moderate drinkers. Infants born to alcoholics had a greater number of craniofacial characteristics and the proportion with features compatible with fetal alcohol effects was higher. There was a similar trend for infants of heavy drinkers. Infants of heavy drinkers who had decreased their alcohol consumption during pregnancy had fewer craniofacial features. Infants of heavy smokers were also found to have increased numbers of craniofacial characteristics. CONCLUSIONS: Craniofacial morphology could be a sensitive indicator of alcohol exposure in utero. Altered morphology is usually considered specific for alcohol exposure, but the relation observed with smoking needs further exploration.

Adult↗
PubMed1990

Stress at work and mental health status among female hospital workers.

Relations between working conditions and mental health status of female hospital workers were studied in a sample of 1505 women: 43% were nurses, 32% auxiliaries, and 7% ancillary staff; 13% were other qualified health care staff, mainly head nurses; 5% had occupations other than direct health care; 63% worked on the morning, 20% on the afternoon, and 17% on the night shift. Data were collected at the annual routine medical visit by the occupational health practitioner, using self administered questionnaires and clinical assessments. Five health indicators were considered: a high score to the general health questionnaire (GHQ); fatigue; sleep impairment; use of antidepressants, sleeping pills, or sedatives; and diagnosis of psychiatric morbidity at clinical assessment. Four indices of stress at work were defined: job stress, mental load, insufficiency in internal training and discussion, and strain caused by schedule. The analysis was conducted by multiple logistic regression, controlling for type of occupation, shift, number of years of work in hospital, daily travel time to work, age, marital status, number of children, and wish to move house. Sleep impairment was mostly linked to shift and strain due to schedule. For all other indicators of mental health impairment and especially high GHQ scores, the adjusted odds ratios increased significantly with the levels of job stress, mental load, and strain due to schedule. This evidence of association between work involving an excessive cumulation of stress factors and mental wellbeing should be considered in interventions aimed at improving the working conditions of hospital workers.

Adult↗
PubMed1990

[Maternal consequences of cesarean delivery. Results of a 4-year follow-up].

This study is of a 4-year follow-up of two groups of mothers, the first having had caesarean operations and the second vaginal deliveries. We have already published studies of the results after delivery, after two months and after one year. The purpose of this 4-year follow-up after delivery is to determine the effects of caesarean operation on the numbers of future pregnancies and their results and to look at the long-term consequences for the physical and psychological health of the mothers. Fifty-eight mothers who had had caesarean operations and fifty mothers as controls replied to a postal questionnaire. The response level was 52%. From the social and the medical point of view there was no significant difference between those who replied and those who did not. The results indicate that mothers who had had a caesarean operation were less likely to have another baby or did so in lower numbers. They further had more difficulty in conceiving another pregnancy than did the control mothers (the differences were not statistically significant). After four years they were often more tired than the others, apart from objective medical and social differences. The use of health services was not linked to the method of delivery, but 9% of women who had had a caesarean consulted a psychiatrist in the last three years but none of the controls did. The replies show that caesarean section contributed to or re-awoke a labile psychological state. The data do not make it possible for us to say that women who had had a caesarean operation had particular psychological characteristics.(ABSTRACT TRUNCATED AT 250 WORDS)

Cesarean Section↗
PubMed1989

[Congenital choledochus cyst in adulthood].

New methods of visualisation of the cysts like ultrasonography, computertomography and endoscopy make a praeoperative diagnosis possible. Because of the malignant potential of the cyst resection is now the treatment of choice instead of cystenterostomy which was formerly used.

Adult↗