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Urinary excretions of high molecular weight beta-thromboglobulin and albumin are independently associated with coronary heart disease in women, a nested case-control study of middle-aged women in the Diagnostisch Onderzoek Mammacarcinoom (DOM) Cohort, Utrecht, Netherlands.

Increased plasma levels of beta-thromboglobulin, a platelet activation marker, are observed in coronary artery disease. Urinary albumin excretion, a marker of endothelial cell perturbation, is related to cardiovascular disease in diabetes. To test the value of these markers in predicting forthcoming coronary disease, the relations between urinary excretions of high molecular weight beta-thromboglobulin (HMW-beta TGf) and albumin and subsequent coronary disease in a cohort of 15,484 middle-aged women were investigated in a nested case-control study. Baseline questionnaire data and urine samples were available from a breast cancer screening program in Utrecht during 1982-1985. Cases were Utrecht hospital admissions for myocardial infarction (n = 50) or angiographically confirmed coronary disease (n = 28) from 1982-1985 to 1990-1991. Classifying events occurred a median of 5.1 years after baseline. Controls were a random sample from the cohort, individually case matched for baseline examination date and age, at a 1:2 ratio. HMW-beta TG/creatinine ratios (ng/mmol, mean +/- standard error) were 5.3 +/- 0.3 in cases and 4.7 +/- 0.3 in controls; albumin/creatinine ratios (mg/mmol, median) were, respectively, 0.37 and 0.22. Crude odds ratios for classification in the highest compared with the lowest tertiles of HMW-beta TG/creatinine and albumin/creatinine distributions were elevated for cases compared with controls: HMW-beta TG/creatinine odds ratio = 2.4, 95% confidence interval 1.1-5.0; albumin/creatinine odds ratio = 2.1, 95% confidence interval 1.0-4.1. These relations persisted after adjustment for smoking, hypertension, Quetelet index, and menopausal status. Both urinary HMW-beta TG and albumin excretion are markers of coronary disease risk in middle-aged women, indicating that increased platelet activation and endothelial cell perturbation precede coronary heart disease events in women.

Adult↗

Age at menopause, body mass index, and the risk of colorectal cancer mortality in the Dutch Diagnostisch Onderzoek Mammacarcinoom (DOM) cohort.

We investigated whether age at menopause is associated with subsequent mortality from colorectal cancer along with the possible modification of this association by body mass index. Our data are from the Diagnostisch Onderzoek Mammacarcinoom cohort of 10,671 postmenopausal women in the Netherlands, enrolled between 1974 and 1977, with a median follow-up of 18 years. During this follow-up, 95 women died of colorectal cancer. Women 49 years of age or older at menopause showed a lower risk of colorectal cancer mortality compared with women younger than 49 at menopause. This protective effect, however, was found only among nonoverweight women (< or =24 kg/m2), for whom the hazard ratio was 0.46 (95% confidence interval = 0.21-1.03). In larger women, the hazard ratio was 1.17 (95% confidence interval = 0.68-2.00).

Age Factors↗

Evidence of decrease in brain size in ranch mink, Mustela vison f. dom., during subadult postnatal ontogenesis.

Total brain size and the volume of several brain parts were compared in male and female ranch mink of varying age and body size in an attempt to quantify postnatal maturation and growth processes in this altricial species. Volumes of fresh whole brains and of different brain parts were calculated from prepared histological sections from juvenile (2- to 3-month-old), subadult (5-month-old), and adult (older than 7 months) individuals. Allometrical calculations were performed on the basis of body weight. Changes in size of different parts of the brain obtained to different degrees were found to be dependent on age but independent of body size. From the juvenile stage to the subadult stage, total brain size remains unchanged, although most major brain parts increase in size, while the grey matter of the isocortex decreases. During subsequent development from subadult to adult, total brain size evidently decreases. Within the brain all major structures also decrease in size, except for the medulla oblongata and the mesencephalon, which remains relatively stable in size. The grey matter of the isocortex shows the greatest decrease, followed by the allocortex and corpus striatum, the cerebellum, the white matter of the isocortex, and the diencephalon. Thus, an unusual but evident 'overshoot' in size of the total brain and certain parts apparently occurs in this species before adulthood is reached. This phenomenon is discussed in connection with size changes concomitant with domestication as well as with cageing of individuals and with postnatal and seasonal size changes known from some soricid species as the so-called Dehnel phenomenon.

Age Factors↗

[Topography and cytoarchitecture of the diencephalon in the female comestic cattle (Bos taurus var. dom.)].

Ten brains of cows were, immediately after slaughter, embedded in celloidin, sliced, and stained to visualise neurocytes and nerve fibres, with the view to elucidating the structures of bovine diencephalon. Macroscopically, the diencephalon of cow is characterised by a comparatively strong epithalamic part, large laterally supported Corpora geniculata lateralis, pronounced ventricular bulgings, almost complete fusion of thalami with Massa intermedia, and very large pituitary gland. The five compartments of bovine interbrain are strongly developed and clearly delimitated by fibrous strings and platelets. By due consideration of the major fibre structures and cyto-architectonic characteristics, 62 nuclei may be differentiated in either half of the diencephalon, with 28 being situated in the thalamus and 23 in the hypothalamus. Two nuclear regions each were recordable from the epithalamus, metathalamus, and subthalamus.

Animals↗

[Histochemical studies of the peroxidase activity of the bursa of Fabricius of Gallus dom.; study of the enzymatic metabolism of that immunocompetent organ during its development].

By means of the technique proposed by De Robertis and Grasso (1946) for the histochemical localization of peroxidase activity, we have shown in the developing chicken Bursa of Fabricius positive cells from the 12th day onwards. They are localized in the mesenchymal network and increase during the development, reaching their top level in a period between the 18th-20th day before hatching and the 3rd day after hatching. After the first week these cells decrease and disappear during the second month. Peroxidase positive cells are tentatively identified as eosinophilic granulocytes (pseudoeosinophilic according to Romanoff); their variations should express fluctuations in the pattern of bursal granulocytopoiesis.

Animals↗

Rhabdomyolysis in DOMS.

A 26-year-old man with a previous history of external twin bursitis was remitted to our Department for a bone scintigraphy. Before the study, the patient performed an elevated number of intense sprints. Bone scintigraphy showed a bilaterally increased activity in both anterior rectum muscles suggesting rhabdomyolysis. Biochemical studies and MRT confirmed the diagnosis.

Adult↗