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Biomedical subjects

G Sell

Publications and source records attributed to G Sell.

28 records · Page 2Linked to original sources
PubMedDate not supplied

[Idiopathic juvenile osteoporosis--report of 2 cases].

Idiopathic juvenile osteoporosis appears in temporal coherence with puberty leading to a reversible generalized osteoporosis of the skeletal system, spontaneous fractures and skeletal deformities. First symptoms in a 14 years old boy occurred as muscle pareses. A lymphocytic pleocytosis could be detected in cerebrospinal fluid. The next two years more than 20 spontaneous fractures occurred. Height was reduced by 15 cm. We first saw the boy at 17 years and could find decreased serum concentrations of calcitriol. Substitution with calcitriol resulted in regression of the pareses within days. Spontaneous fractures did not develop during the next two years of therapy. Subsequently serum calcitriol level was normalized. In a 10 years old boy first symptom occurred as fractures resulting from minimal traumas. In this case also during previous calcitriol therapy no new fractures occurred.

Adolescent↗
PubMedDate not supplied

[Proprioceptive regulation of standing in the human. An electromyography study].

Electromyographic experiments, undertaken in connection with action of standing, are here described. A short, sharp push given in an anterior or posterior direction caused an abrupt upsetting of balance, whereby adaptive reactions of the relevant muscles were found to occur after an interval of 60 to 90 msecs. These reactions, although having become automatic as a result of the early-acquired upright posture, are in fact of a voluntary nature and fully controllable by the will. It is demonstrated that these reactions are very probably due to stimulation of deep mechano- and joint-receptors. They do not have anything to do with a functional stretchreflex mechanism.

Adult↗