PubMed Health⌕ Search

Biomedical subjects

K Clemmensen

Publications and source records attributed to K Clemmensen.

10 recordsLinked to original sources
PubMed2003

The Danish PET/depression project: cognitive function and regional cerebral blood flow.

OBJECTIVE: To clarify the relationship between cognitive functions and regional cerebral blood flow (rCBF) in a large group of depressed patients compared with healthy controls. METHOD: A set of principal components was extracted from scores of a battery of neuropsychological tests of 40 patients suffering from major depression and 49 healthy controls. The components were correlated by multiple linear regression analyses to selected regions of interest in the brain obtained from positron emission tomography images. RESULTS: In contrast to findings in the healthy controls, cognitive functions in the depressed patients correlated significantly with rCBF in specified regions of interest in only a few instances. CONCLUSION: Our study indicates that disturbed cognitive functions in depression do not relate to specific areas of the brain in the same way as normal cognitive functioning, suggesting that the abnormalities of brain function in major depression may be qualitative, rather than quantitative, in nature.

Adolescent↗
PubMed2002

The Danish PET/depression project: clinical symptoms and cerebral blood flow. A regions-of-interest analysis.

OBJECTIVE: We wanted to explore associations between clinical symptoms of depression and the blood flow to specific regions of the brain. Furthermore, we wanted to compare the regions-of-interest (ROI) method with the functions-of-interest (FOI) approach. METHOD: The resting blood flow to 42 ROI in the brain was obtained with positron emission tomography (PET) imaging in 42 representative in-patients with major depression and 47 matched healthy controls. RESULTS: The patients had increased blood flow to hippocampus, cerebellum, anterior cingulate gyrus, and the basal ganglia. A strong negative correlation was found between the degree of psychomotor retardation of the patients and the blood flow to the dorsolateral and supraorbital prefrontal cortices. The total Hamilton score was correlated with the blood flow to the hippocampus. CONCLUSION: Our findings support the notion that depressed patients have disturbances in the loops connecting the frontal lobes, limbic system, basal ganglia, and cerebellum.

Adult↗
PubMed2001

Structural brain abnormalities in unselected in-patients with major depression.

OBJECTIVE: Several studies have indicated an increased frequency of cerebral atrophy and white matter lesions in patients with major depression, especially in older age groups. METHOD: Forty-four representative in-patients with major depression in which neurological disorders were clinically excluded, and 49 age- and gender-matched controls were MR scanned. RESULTS: Unexpectedly, two of the patients had severe brain pathology which could account for their psychiatric symptoms. Analysis of the remaining patients (mean age 42 years) did not reveal an increased frequency of cerebral atrophy. The number of white matter lesions increased with age to an odds ratio greater than 3 for patients aged 50, but this was not statistically significant. CONCLUSION: Brain atrophy and white matter lesions did not occur with significantly increased frequency in these relatively young unselected depressives, but the finding of severe brain pathology stresses the importance of brain imaging in late-onset psychiatric disorders.

Adult↗
PubMed1999

Patient and relative education in community psychiatry: a randomized controlled trial regarding its effectiveness.

BACKGROUND: Family psychoeducation has a well-documented effect on the short-term prognosis in schizophrenia. Less is known about the effectiveness of shorter programmes with the main focus on information for patients (patient education) or for patients and relatives (family education). METHODS: A randomized study of the effectiveness of an eight-session psychoeducational programme for patients with schizophrenia and for their relatives was conducted in two community mental health centres, in Arhus and Viborg (Denmark). Patient outcome measures were knowledge, relapse, compliance, insight and satisfaction, and relative outcome measures were knowledge and satisfaction. Post-intervention outcome and follow-up evaluation 1 year after the start of the intervention are presented. RESULTS: A statistically significant increase in knowledge of schizophrenia in both relatives and patients was demonstrated at postintervention and a non-significant trend at 1-year follow-up. Statistically significant changes in the Verona Service Satisfaction Scale Scores in the subdimension of satisfaction with Relatives involvement were demonstrated both for patients and relatives postintervention and for patients at 1-year follow-up. There was a tendency that time-to-relapse increased in the intervention group at postintervention and that the schizophrenia subscore of the Brief Psychiatric Rating Scale was reduced in the intervention group at 1-year follow-up. No differences were found between the groups regarding compliance, insight into psychosis, psychosocial function (General Assessment of Function) or in relatives' expressed emotion scores postintervention or at 1-year follow-up. CONCLUSIONS: A short patient and relative education programme seems to be able to influence knowledge and some aspects of satisfaction, but does not seem to be sufficient to influence important variables such as relapse, compliance, psychopathology, insight or psychosocial functioning.

Adult↗
PubMed1998

[Osteoporosis in unselected patients in an ambulatory clinic for pulmonary medicine. An inexpensive diagnostic possibility not requiring extra time].

Patients with pulmonary and allergy-related diseases often suffer from osteoporosis. Deformities of the thoracic spine in the lateral view of a routine chest X-ray were evaluated in 1558 patients admitted to a chest clinic in a prospective, blinded and non-selected manner with various cardio-respiratory complaints. Signs of osteoporosis were found in 108 of 811 males and in 79 of 747 females. In 187 patients with thoracic spine compression a total of 106 had received corticosteroid medication. Only one received oestrogen and no one took calcium or D-vitamin supplementation. Conclusively we found that more attention should be paid to osteoporosis in patients with pulmonary disorders. An easy and cheap way is to look for fractures on a simple chest X-ray in a population of patients with cardiorespiratory complaints. We found a very high prevalence of thoracic spine deformities, especially in men.

Aged↗
PubMed1987

Zinc in Danish women during late normal pregnancy and pregnancies with intra-uterine growth retardation.

Zinc and alkaline phosphatase were examined in 41 pregnant women (gestational weeks 35-41) and in 12 women within 24 h of delivery. The serum-zinc level was reduced in all the women, though to a lesser degree in women giving birth to small for gestational age (SGA) babies than in the control mothers. The difference between the two groups was significant (p = 0.019). Erythrocyte-zinc increased during pregnancy, more in control mothers than in SGA mothers (p = 0.020). Granulocyte-zinc was not significantly reduced in pregnancy and no difference was found between SGA mothers and control mothers. Alkaline phosphatase levels in serum and granulocytes were elevated equally in the two groups. These findings show that zinc level changes occur in pregnancy, but that the changes do not appear to be a dominant cause of SGA pregnancy, in Danish women.

Alkaline Phosphatase↗