Cancer mortality among licensed herbicide applicators.

This retrospective cohort study investigated the cancer mortality of 1341 herbicide applicators licensed before 1 January 1980. The cohort was followed for mortality until 1 January 1988 by means of the Dutch system of population registers. For the subjects who died before 1 January 1988 the cause of death was obtained from the Central Bureau of Statistics. The cause of death was obtained for 98.4% of the deceased subjects. The total mortality was lower than expected according to mortality rates of the total male Dutch population. The total number of deaths from cancer was however slightly higher than expected [standardized mortality ratio (SMR) 114]. Mortality from several subtypes of cancer was also higher than expected, that for multiple myeloma being statistically significantly higher than unity (SMR 815, 95% confidence interval 164-2382). Occupational exposure to herbicides appears to increase the risk for multiple myeloma and possibly other malignant neoplasms.     

Care dependence and individual care provision

For policy purposes as well as for the provision of individual care, it Is relevant to know which individual characteristics have impact upon the level of care dependence. For purposes of individual care provision, characteristics which can be influenced and which also have an important impact upon the care dependence are of interest. This study showed that the profoundly mentally handicapped are almost all totally dependent upon care, and therefore additional information about individual characteristics is superfluous. The results of logistic regression analyses showed a statistically significant and important impact of ADL-functions. Exactly which other characteristics are relevant to consider depends upon the level of care dependence and the level of mental handicap.     

Consumption of fermented milk products and breast cancer: a case-control study in The Netherlands

In a case-control study in The Netherlands, we observed a significantly lower consumption of fermented milk products (predominantly yogurt and buttermilk) among 133 incident breast cancer cases as compared to 289 population controls (mean +/- SD among users only, 116 +/- 100 versus 157 +/- 144 g/day; P less than 0.01). The age-adjusted odds ratio of daily consumption of 1.5 glasses (greater than or equal to 225 g) of fermented milk versus none was 0.50 (95% confidence interval, 0.23-1.08). When fermented milk was entered as a continuous variable (per g) in either age-adjusted or multivariate analysis, the odds ratio expressed per 225 g was 0.63 (multivariate-adjusted 95% confidence interval, 0.41-0.96). After multivariate adjustment for intake of fat and other confounders, a statistically significant decrease in breast cancer risk was also observed for increasing intake of Gouda cheese. The multivariate-adjusted odds ratio expressed per 60 g of this fermented product was 0.56 (95% confidence interval, 0.33-0.95). For daily intake of milk, no statistically significant differences were observed between cases and controls. These results support the hypothesis that high consumption of fermented milk products may protect against breast cancer.     

Contribution des facteurs génétiques et nutritionnels dans les hyperhomocystéinémies dans la population algérienne saine

The particular genetic polymorphisms associated to homocysteine metabolism enzymes, or more usually, a relative lack in different vitamins B group, are the main cause of the increase in this sulfur amino acid in the blood. As a fact, hyperhomocysteinemia are associated to many pathologies. The aim of this study is to determine the frequencies of the different genotypes caused by these polymorphisms, folate and vitamin B12 status and their eventual connections to hyperhomocysteinemia among a healthy adult population. The investigation has been applied to 165 apparently healthy volunteers. The homocysteine concentration was determined by IMx fluorescence polarization immunoassay. The genotypes determination was done by real-time PCR (RT-PCR) (Light Cycler 480). Folates and vitamin B12 were analyzed by SimulTRAC-SNB immunoassay. The homocysteine level was 14,69 ± 7,30 μmol/L. 22.5% of the subjects exhibited a moderate hyperhomocysteinemia (> 15 μmol/L). The major nutritional determinants of the plasmatic homocysteine rates among these subjects were blood folate and vitamin B12 levels. Blood homocysteine was the highest for the homozygote (TT) individuals for the MTHFR gene than for the heterozygote (CT) and homozygote (CC) subjects in particular for the lowest blood folate quartile. These two assessments have to be taken in consideration when evaluating the predisposition of the Algerian population for morbid and/or mortal pathologies and allow emphasizing on the necessity of screening out and eventually treating vitamin deficiencies on folates vitamin B12.     

The effect of beta-carotene on the regression and progression of cervical dysplasia: a clinical experiment

In order to gain insight into the causality of the relation between beta-carotene and cancer, we performed a randomized placebo-controlled trial in which the effect of beta-carotene on the regression and progression rates of cervical dysplasia were examined. The experimental group (n = 137) received a supplemental dose of 10 mg of beta-carotene daily for 3 months. The control group (n = 141) received placebo capsules. As the outcome parameter, two definitions of regression and progression were used, which were based on the degree of dysplasia before and after the medication period. The number of patients who showed progression was too small to allow conclusions. No effect of beta-carotene on the regression percentages was observed: OR = 0.68 (95% CI: 0.28-1.60) using the broad definition; and OR = 1.22 (95% CI: 0.43-3.41) with the strict definition. A secondary analysis, in which the effect of the total intake of beta-carotene (diet + medication) on the regression percentages of cervical dysplasia was studied, did not show a positive effect either. The paper discusses to what extent issues in the study design may have masked a potential effect and how our results affect the evidence for a causal relation between beta-carotene and cancer.     

Nachweis des Wendungseffektes bei glatten Muskeln

Zusammenfassung Es wird am ganglienlosen Sclmeckenfuß (Helix) sowie am Fuß der Teichmuschel (Anodonta) gezeigt, daß bei direkter elektrischer Reizung in ungefähr Minutenintervallen mit Kondensatorentladungen von 0,24 Sekunden Dauer wiederholt ein typischer Wendungseffekt — so wie beim ausgeschnittenen quergestreiften Froschmuskel — erhalten werden kann. Ebenso erweist sich auch bei den glatten Muskeln eine Durchströmungsphase mit entgegengesetzter Stromrichtung in bezug auf die Erholung in der Prüfrichtung wesentlich wirksamer als die bloße Einschaltung einer ebenso langen Pause. Da die Durchströmungszeit bei jedem Reiz (Polarisierungszeit) sich zur Zerstreuungszeit (dem Intervall zwischen 2 Reizen) in einzelnen Versuchen so wie 1333 verhielt, kann nicht angenommen werden, daß der Wendungseffekt bei fortgesetzter Reizung mit gleichbleibender Stromrichtung auf die polare Ionenansammlung zurückzuführen ist, weil ja im Reizintervall die Ionen genügend Zeit zur Rückdiffusion bzw. Zerstreuung haben. Die Versuche zeigen im Gegenteil, daß die zum Wendungseffekt führenden physikalisch-chemischen Veränderungen unter den Polen auch bei langem Reizintervall bestehen bleiben und sich nicht zuxückbilden.     

Gender differences in problems and needs among chronic,high‐risk crack abusers: Results of a randomized controlled trial

Objective: Aims of the study were to assess, among clients receiving an outpatient treatment program (OTP), whether female crack abusers have more severe problems and/or different service needs than men.

Methods: A total of 63 chronic crack abusers (34 women) participated in the study at baseline. Follow‐up data were available for 33 subjects (21 women). Outcome measures included general condition at intake, and treatment compliance, outcome and satisfaction. Data were collected by means of monthly registrations, EuropAsi interviews and an evaluation form. OTP consisted of assertive outreach, a time‐out provision, and intensive case management.

Results: The vast majority of women were involved in street prostitution and were extremely vulnerable to deterioration. Compared to men, women who entered treatment had poorer physical health, higher rates of previous physical/sexual abuse, and more anxiety symptoms. Women reported a longer episode of cocaine abstinence than men. At discharge from OTP men reported a significantly better treatment outcome than women. Both genders gained most improvement in general living conditions. No gender differences emerged in treatment compliance. Although both men and women were satisfied with the service items offered by OTP, an outpatient walk‐in service best served the needs of men, whereas women preferred a 24‐hour care service including medical treatment and motivational outreach.

Conclusions: Due to the harshness of street prostitution, treatment for female crack abusers should address areas of severe impairment. Integrated treatment services, tailored to the lifestyle of these women, are required to improve their general situation and safety.     

Ueber Entfernung des grauen Staars mit der Kapsel

Ohne Zusammenfassung