PubMed Health⌕ Search

Biomedical subjects

F Lamprecht

Publications and source records attributed to F Lamprecht.

At least 55 records · Page 3Linked to original sources
PubMed1975

Central adrenergic neurons in DOCA-salt hypertension.

The effects of various doses of 6-hydroxydopamine (6-OHDA) injected into the hypothalamus on DOCA-salt-induced hypertension were studied. The development of hypertension was prevented in the group treated with the highest dose of 6-OHDA, and the onset of hypertension was delayed in a dose-dependent fashion in the groups treated with the lower doses of 6-OHDA. Catecholamine histofluorescence observations showed that the cannula tips placed the drug lateral to the third ventricle. The most prominent change observed was a marked unilateral reduction in the fluorescence of the dopaminergic nerves of the caudate-putamen and in the number of cell bodies in the substantia nigra. These results suggest possible sites of central aminergic control of blood pressure.

Animals↗
PubMed1975

Elevated serum dopamine-beta-hydroxylase activity in rats with inherited diabetes insipidus.

The activity of dopamine-beta-hydroxylase, the enzyme that catalyzes the conversion of dopamine to norepinephrine, was measured in the serum of a strain of Wistar rats homozygous and heterozygous for a genetic form of hypothalamic diabetes insipidus and in Wistar control rats. Serum dopamine-beta-hydroxylase activity and water intake was highest in the homozygous affected rats and lowest in normal controls. Treatment with pitressin tannate reduced serum enzyme activity and water intake in rats with diabetes insipidus to levels which did not differ from controls. Thus serum dopamine-beta-hydroxylase activity appeared to vary directly with changes in sympathetic nerve activity in response to intravascular volume depletion and repletion.

Animals↗
PubMed1973

Delta 9 -tetrahydrocannabinol and ethanol: differential effects on sympathetic activity in differing environmental setting.

Serum dopamine beta-hydroxylase activity, a useful biochemical index of peripheral sympathetic nervous activity, was measured in rats treated with Delta(9)-tetrahydrocannabinol or ethanol or both substances. After 7 days of treatment with either substance, serum dopamine beta-hydroxylase activity decreased significantly. Combined treatment with both agents enhanced the effects of each given alone. In rats subjected to immobilization stress, treatment with Delta(9)- tetrahydrocannabinol appeared to potentiate the stress-induced increase in serum enzyme activity. Treatment with ethanol, with or without Delta(9)-tetrahydrocannabinol, effectively blocked this increase in enzyme activity. These results show that both substances have significant effects on the sympathetic nervous system which are critically influenced by environmental setting.

Alcoholic Intoxication↗
PubMed1972

Rat fighting behavior: serum dopamine- -hydroxylase and hypothalamic tyrosine hydroxylase.

Male Sprague-Dawley rats were subjected to 4 weeks of daily periods of immobilization stress. One of two experimental groups was allowed 1 month of recovery. After 4 weeks of stress, there was a significant increase in shockinduced fighting, in the activity of serum dopamine-beta-hydroxylase, and in the activity of hypothalamic tyrosine hydroxylase. The concentration of hypothalamic norepinephrine was not decreased. After 4 weeks of recovery, only serum dopamine-betahydroxylase activity returned to normal; it therefore appears that longterm stress may increase central catecholamine synthesis. possibly resulting in a persistent increase in aggressive behavior.

Aggression↗
PubMedDate not supplied

[Indirect costs and time costs of (ambulatory) rehabilitation of mothers with psychosomatic disorders who have preschool children].

Ambulatory rehabilitation concepts for women with psychosomatic disorders and with pre-school children are rare and moreover not yet assessed. An economic concept for the evaluation of indirect costs and (patient) time costs is being developed in this article and applied to an ongoing ambulatory rehabilitation programme for mothers at the Hanover Medical School. In health economic evaluations time cost is expressed by loss and reduction of working time, time for housework, and leisure time. These are indirect cost items (working time) and direct non-medical costs (housework and leisure time). To estimate the loss of working time (and hence production loss) the human capital approach and the frictional cost approach can be applied. Loss of time due to housework can be estimated either by the production of goods and services or by the opportunity costs of the equivalent working time. Loss of leisure time can be partial or total whereas a total loss and a loss of working time are considered to be analogous. The health economic evaluation of the ambulatory rehabilitation programme for mothers is designed as a randomised controlled study with repeated data collection. The parameters of indirect and direct non-medical costs are measured at the beginning of the rehabilitation programme and until twelve months later by means of questionnaires, face-to-face and telephone interviews. So far, results of the evaluation show that the actual time cost of the rehabilitation programme is DM 6,162 for each mother and the time cost because of the utilisation of the health care system is DM 996 per four weeks. Therefore, the patient costs are obviously higher than the direct medical costs for the programme which makes it clear that taking into account the costs of the patient (especially the time costs) can make a decisive difference in the evaluation of alternative treatment programmes and may possibly reverse the advantages of an alternative.

Adult↗
PubMedDate not supplied

[Study quality and effect-sizes - a metaanalysis of EMDR-treatment for posttraumatic stress disorder].

Although the good efficacy of eye movement desensitization and reprocessing (EMDR) in the treatment of patients with PTSD is up to now documented by a number of studies, this new treatment technique is still the target of highly controversial critique. Our meta-analysis tries to answer the question of whether EMDR-therapy studies with higher quality standards achieve better results than others. Therefore, all published studies underwent a scoring procedure of study quality and effect sizes were computed. It can be shown that carefully planned studies, including treatment by well-trained therapists and with a sufficiently high number of treatment session achieve better results compared to studies with low methodological standards.

Clinical Trials as Topic↗