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R Junik

Publications and source records attributed to R Junik.

25 records · Page 2Linked to original sources
PubMed1983

[Effect of bromfenvinphos (IPO-62) on changes in the apical dendritic spines of the cortical pyramidal neurons of the rat].

The rats (control group--6 animals, experimental group I--13, experimental group II--8) of inbred Wistar/W Bog strain, were orally administered 84,6% technical concentrate IPO-62 (bromphenvinphose) dissolved in olive oil and next the spines on apical cortex dendrites were evaluated. Statistically significant loss of dendritic spines was found both in group I (IPO-62 daily dose from 3 to 12 mg per 1 kg of body weight during 58 days) and in group II (IPO-62 daily dose--12 mg per 1 kg/body weight for 5 days and 18 mg/kg body weight for 4 days).

Animals↗
PubMedDate not supplied

[Diagnostic value of regional cerebral blood flow in SPECT pattern in Alzheimer's disease].

Regional cerebral blood flow in SPECT pattern was estimated in 20 cases of Alzheimer disease. In all patients diffuse hypoperfusion was found evidencing a great diagnostic value of SPECT. A special significance has the study of regional cerebral blood flow in the differential diagnosis of Alzheimer disease, frontal lobe dementia and pseudodementia in major depression.

Aged↗
PubMedDate not supplied

[Changes of regional cerebral blood flow in stroke patients assessed by SPECT].

UNLABELLED: The aim of our work was to evaluate changes in regional cerebral blood flow (rCBF) in patients with TIA and/or completed stroke and localisation of fotopenic foci in basal conditions and, in some cases, after stimulation pharmacological trial with acetazolamide. One hundred and fifty three patients participated in the study--105 with completed stroke and 48 with TIA. Regional CBF (rCBF) was evaluated using a single-headed rotating gamma camera (Diacam, Siemens) with high resolution collimator, after injection of 740 MBq 99mTc-HMPAO (Ceretec, Amersham). Sixteen patients with TIA underwent SPECT at baseline and after injection of acetazolamide (ACZ). Relative regional perfusion was expressed as the ratio of cerebral/cerebellar activity. In the completed stroke population, the perfusion ratios were significantly lower than those of controls and TIA at baseline (p < 0.001) and TIA after ACZ (p < 0.01). CONCLUSIONS: This study shows a significant difference in rCBF in patients with completed stroke and/or TIA and controls. In patients with TIA and rCBF similar to that observed in controls, perfusion deficits may be visible after ACZ injection.

Adult↗
PubMedDate not supplied

[The thyroid function markers and their prognostic significance patients with ischemic stroke].

Thyroid hormones serum concentration alters in a variety of nonthyroidal illnesses. Thyroxine and triiodothyronine levels in patients after ischaemic stroke are significantly lower and reverse-triiodothyronine (rT3) and triiodothyronine uptake index (T3I) are considerably higher. At the beginning of insultus rT3 and T3I can be used as the markers of fatal prognosis.

Adult↗
PubMedDate not supplied

[The assessment of regional cerebral blood flow using HMPAO-SPECT during depressive episode and in remission].

Twenty patients who met the DSM-IV criteria for major depressive disorder were investigated at rest using Single Photon Emission Computed Tomography (SPECT). Participation in the study required a minimum score of 18 points on the 17-item Hamilton Rating Scale. All patients were drug free for at least one week before the SPECT scan. Assessments were made twice during depression and after recovery. Regional tracer uptake was measured by a semiquantitative method. The reference region was delineated on the cerebellum. In remission a significant increase of 99m Tc-uptake in almost all regions of interest was observed what may point on the improvement of regional blood flow after recovery from depression. For most regions except right frontal and left parietooccipital there were no significant differences of tracer uptake between patients with bipolar and unipolar depression. The negative correlation between regional cerebral blood flow and Hamilton score was found in temporal areas and left temporo-parietal region. We did not find the influence of age on regional cerebral blood flow. In conclusion, during depression global reduction of brain metabolism was observed, which may point on the role of subcortical nuclei with diffuse cortical projection in pathogenesis of depression.

Adult↗
PubMedDate not supplied

[The Landau-Kleffner syndrome. SPECT and EEG investigations].

Four children (three boys and one girl) with acquired epileptic aphasia (the Landau-Kleffner syndrome) have been observed in the Department of Developmental Neurology University of Medical Sciences in Poznań. We present the dynamic of clinical symptoms and fluctuations in EEG studies. The changes in the brain in single photon emission computed tomography (SPECT) during remission of clinical symptoms are discussed.

Brain↗