Search PubMed⌕ Search

Biomedical subjects

C Masson

Publications and source records attributed to C Masson.

At least 235 records · Page 13Linked to original sources
PubMed1983

[Familial and recurrent hyperparathyroidism. Apropos of 7 adenomas in 3 members of the same family. Review of the literature].

Over a period of 23 years, 3 members of a family of 5 presented with 7 parathyroid adenomas (4 in the first case, 2 in the second case, 1 in the third case). Excision of each adenoma, with systematic pre-operative assessment of the remaining parathyroid tissue, led to complete clinical and laboratory cure of each episode. The delay in the appearance of recurrence was between 3 and 9 years. After reviewing the literature, the authors stress the importance, in any case of hyperparathyroidism, of routinely investigating the serum calcium levels in members of the patient's family, especially if the patient is young and if he has had several episodes or a multiglandular involvement in the one episode. The authors discuss the literature concerning recurrent familial hyperparathyroidism with endocrine polyadenomatosis and the "hypercalcaemia - hypocalciuria" syndrome.

Adenoma↗
PubMed1983

[Value of dapsone in the treatment of Horton's disease and rhizomelic pseudopolyarthritis].

The authors report two cases of Horton's disease and one case of rhizomelic pseudopolyarthritis treated initially with delta-cortisone with a very rapid favourable result. However, while under relatively high dose steroid therapy, there was recurrence of the disease in the three cases and the development of complications of steroid therapy prohibited the use of higher doses of delta-cortisone and even required its rapid weaning. In these three cases, the addition of 100 mg of dapsone per day led to a rapid control of the disease, with return to normal of the erythrocyte sedimentation rate and reduction of the doses of delta-cortisone. The authors discuss the place of dapsone in the treatment of Horton's disease and rhizomelic pseudopolyarthritis in the light of these three cases.

Aged↗
PubMed1981

[Substance P].

Substance P is present in numerous organs (salivary glands, trachea, pancreas, kidneys, bladder and prostate) and in various parts of the central and peripheral nervous system, notably substantia nigra, hypothalamus, pineal body and dorsal horn of the spinal cord. It is a potent stimulant of salivary secretion and intestinal motility, a vasodilator in muscles and fatty tissues and an inhibitor of insulin release. Its main role, however, lies in the transmission of pain, where it seems to act as neuromodulator. Released when nociceptive fibers are activated at the same time as the fast-acting neuromediator, it enhances and prolongs the effects of the latter. Opiates inhibit its release. In addition, substance P is present in the excitatory neurones of the corpus striatum-substantia nigra pathway, which also has GABA-containing inhibitory neurones, and this pathway is known to modulate the dopaminergic nigra-striatum pathway. The global function of substance P, therefore, seems to keep the central nervous system in a state of alert through activation of the cerebral cortex and assistance in the transmission of pain.

Animals↗
PubMed1980

The deutocerebrum of the cockroach Blaberus craniifer Burm. Spatial organization of the sensory glomeruli.

The objective of this work is to describe the glomerular organization of the deutocerebrum in Blaberus craniifer and to test the hypothesis that the glomeruli are identifiable. The problem is studied using the techniques of analytical geometry, i.e., by measuring the location of the glomeruli in cartesian coordinate systems. Computerized geometrical and statistical techniques are described for the three-dimensional reconstruction and quantitative study of these brain structures. The invariance of the glomerular organization, and consequently the identifiability of the glomeruli, is based on three criteria: (1) the number of glomeruli per hemideutocerebrum (hDTC) is a constant (109); (2) the position of the glomeruli is symmetrical in the two sides of one individual and identical in the same side of two individuals, except for small local variations,(3) the dimensions of two positionally homologous glomeruli are statistically equal in the same and in different individuals, except for a macroglomerulus which is found only in the male. The causes of variability, from experimental and biological origin, are discussed and quantitatively evaluated. The interindividual biological variability, not ascribable to differences in size between brains, expressed as a 95% interval, is estimated to be 27 micrometer for the location of glomeruli and 12 micrometer for the diamter of glomeruli.

Analysis of Variance↗