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Biomedical subjects

B Brownell

Publications and source records attributed to B Brownell.

33 records · Page 2Linked to original sources
PubMed1974

The cerebellum in mucopolysaccharidosis. A histological, histochemical, and ultrastructural study.

Studies in the morphology, histochemistry, and ultrastructure of the cerebellum, with special reference to the Purkinje cell dendrites, have been undertaken in eight cases of gargoylism. The results suggest that the demonstration of ovoid swellings of the Purkinje cell dendrites by the Cajal method for the cerebellum, together with certain histochemical findings, may enable a diagnosis of mucopolysaccharidosis to be made. Possible mechanisms for the formation of these swellings are briefly discussed.

Adolescent↗
PubMed1972

Neurogenic muscle atrophy in myasthenia gravis.

Two cases of severe myasthenia gravis are described, with histological findings. Both cases showed severe neurogenic atrophy of the muscles of the tongue, with fatty pseudohypertrophy and a remarkable proliferation of terminal nerve fibres. Similar, but less severe, changes were present in other bulbar muscles. The findings are in keeping with the view that functional interruption at the neuromuscular junctions results first in failure to transmit the contractile impulse, and at a later stage in denervation atrophy. Terminal proliferation of axons is regarded as an attempt, on the part of motor fibres, to compensate for the breakdown of normal neuromuscular interaction.

Adrenocorticotropic Hormone↗
PubMed1972

Pathology of peroneal muscular atrophy (Charcot-Marie-Tooth disease).

Four cases of peroneal muscular atrophy (Charcot-Marie-Tooth disease) are described in which observations were made from the necropsy examination of the central nervous system, the peripheral nervous system, and the skeletal muscles. The pattern of nerve degeneration in these various locations is described and the conclusion is drawn that the basis of the disease is a very chronic progressive neuropathy. To the pathological descriptions of previous observers is added the finding of fibrosis affecting the muscle spindles which was present in all four of the cases. The literature of the case reports with necropsy examination is reviewed.

Adult↗
PubMed1970

The central nervous system in motor neurone disease.

Forty-five necropsied cases with primary degeneration of lower motor neurones are described and discussed. Of these, 36 are considered to be `typical' cases of motor neurone disease, eight of which showed no upper motor neurone lesions. The relation of the nine `atypical' cases to the remainder is discussed. It is concluded that motor neurone disease constitutes an ill-defined band in a broad spectrum of multiple system atrophies. The authors have found no evidence suggesting a causal relation between motor neurone disease and either vascular or malignant diseases. They point out suggestive analogies with various subacute encephalomyelopathies in man and other animals.

Adult↗