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Biomedical subjects

J Piatkowski

Publications and source records attributed to J Piatkowski.

At least 19 recordsLinked to original sources
PubMed1986

[Dorsolateral thalamic infarct syndrome with therapeutically modifiable pain crises].

The Controlateral Pain Flexor Reflex (CPFR) is demonstrated by a case study of a thalamic syndrome with a typical thalamic hand, thalamic foot, and thalamic pain crisis. Mechanical triggering by a painful irritation on the healthy hand side leads to a stronger motoric-nocifensic reflex response of the contralateral extremities. On the other hand the healthy person would develop an ipsilateral nocifensic response only. In the case reported here, the electrically evoked CPFR led to the same result, and simultaneously caused disappearance of the thalamic pain, since this kind of management represents therapeutical approach via the endorphin system. In respect of the pathophysiological basis of the thalamic modified nocifensic reflex response, we are inclined to believe that painful stimulation evokes an accentuated flexor reaction if the thalamic-controlled influences are omitted by a lesion of the specific nuclei.

Adult↗
PubMed1985

[Regional differences in the chemical composition of the human tibia].

The chemical homogeneity in all parts of the bone compacta was investigated in 2 human tibiae taken from male cadavers. The ash and nitrogen contents were used as parameters of the chemical homogeneity. Analyses for calcium and phosphorus were performed in addition to characterize the ash content. The mineral components reached their highest levels in the middle of the diaphysis, but the ash contents decline in the directions towards the epiphysis. The distributions of the values for the organic compounds (nitrogen) show a converse pattern. The nitrogen content was highest especially at points where tendons are anchored in the compacta. The ash or mineral content is approximately proportional to the density of the dry bone substance. The chemical composition of the bone compacta can therefore be used to draw conclusions regarding zones that are subject to different functional loads.

Adult↗