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Biomedical subjects

C Watts

Publications and source records attributed to C Watts.

At least 199 records · Page 11Linked to original sources
PubMed1979

Computed tomography and intracranial aspergillosis.

A case of aspergillosis of the central nervous system with multiple granulomas examined by computed tomography is reported. The findings are those of chronic mass lesions with and without calcium deposits. An associated cystic configuration probably is not specific for aspergillomas.

Adolescent↗
PubMed1978

Protein and lipid components of the pigeon erythrocyte membrane.

The plasma membrane of the nucleated pigeon erythrocyte was isolated by a method that is simple, reproducible and minimally disruptive, the final preparation consisting of whole cell 'ghosts', recovered at over 40% yield. Alternative methods, which yield membrane fragments, were also tested and some of their possible disadvantages demonstrated. Analysis of the protein components of the isolated membranes by gel elctrophoresis in the presence of sodium dodecyl sulphate revealed that their composition is very similar to that of the proteins of human erythrocyte membranes. However, two major proteins are unique to the nucleated cell membrane; these have apparent mol.wts. of 97000 and 57000. Also, the bands designated 4.2 (74500 mol.wt.) and 6 (35000 mol wt.) by Steck [(1974) J. Cell Biol. 62, 1-19] for the human cell membrane are absent from pigon cell membrane. Glycosylated membrane proteins could not be detected in gels stained with the periodate-Schiff-base procedure. Analysis of membrane phospholipids revealed the same components known to be present in mammalian erythrocytes, though in different proportions. These findings are discussed in the light of known physiological and biochemical differences between avian and mature mammalian erythrocytes.

Animals↗
PubMed1978

The determination of average hospital length of stay: an economic approach.

The observed variation in length of hospital stay across the regions of the country has long been of interest to regulators, providers, and third party payors in the hospital industry. The purpose of this article is to provide an economic model of hospital and industry behavior within which these variations can be explained. The model is tested using state data for the year 1973. The model performs well, although the theoretical role of the occupancy rate suggests that additional testing is warranted.

Bed Occupancy↗
PubMed1977

Transsphenoidal microsurgery for selective removal of functional pituitary microadenomas.

The transphenoidal approach to the pituitary gland is emerging as the safest and most efficacious procedure for the management of pituitary tumors. With the aid of the microscope large tumors producing visual symptoms can be removed and microadenomata producing only signs and symptoms of endocrinopathies can be safely and adequately approached. The procedure is described in this report. The results of its use in 29 patients with selected illustrative case reports are described.

Acromegaly↗
PubMed1977

Cerebral revascularization for transient ischemic attacks.

Thirty-one patients with cerebral transient ischemic, attacks and ipsilateral internal carotid artery occlusion without contralateral internal carotid artery occlusion or stenosis were treated with a surgical anastomosis between a superficial temporal artery and a cortical branch of the middle cerebral artery of the symptomatic hemisphere. The anastomosis was successful in 28 patients. Recurrent transient ischemic attacks were abolished in 23 patients and reduced in three. Two patients, one with a patent anastomosis, had strokes during the follow-up period. Of seven patients who refused the operation, two had strokes, two noted a reduction of transient ischemic attacks, two noted no change, and one became asymptomatic.

Adult↗
PubMed1977

Disseminated intravascular coagulation.

The diagnosis of disseminated intravascular coagulation associated with intracranial pathology is discussed. This pathological entity is characterized by a diffuse bleeding diathesis. Laboratory studies suggest a consumption of all clotting and fibrinolytic factors with an elevation of fibrin split products as a sign of the fibrinolytic activity. The treatment consists of the administration of packed platelets and fresh frozen plasma to replace the consumed coagulation factors. Heparinization is recommended early to prevent further consumption of coagulation factors and epsilon-aminocaproic acid is recommended later after acute fibrinolysis is diagnosed. Constant coaguloanalytic monitoring is necessary. Although the etiology with massive injury to brain tissue is possibly secondary to autotransfusion of brain tissue thromboplastin, other causes such as hypotension, anoxia, acidosis and hemolysis must be considered.

Blood Coagulation Tests↗
PubMed1976

Glycogen metabolism in the liver of the developing rat.

1. The total activity of glycogen synthease increased 20-fold from day 17 of gestation to birth at day 22, with a further increase of 18% in the 24h after birth. Active synthase (I) rose 45-fold to a maximum at day 21, fell 40% before birth, and then increased by a similar amount 24h after birth. The fraction of synthase in the active form correlated very well with the deposition of glycogen in the liver. 2. Total phosphorylase had a similar developmental pattern of total synthease with an 18-fold increase from day 17 to day 22. The appearance of active phosphorylase showed a lag-period compared with total phosphorylase and did not increase significantly until day 20. The fraction of phosphorylase in the active form did not correlate at all with glycogen deposition or mobilization. 3. There was a close relationshp between the ratio of phosphorylase a/synthase I and the glycogen content of the liver. An increase or decrease in this ratio would result in glycogenolysis of glycogenesis respectively. 4. It is postulated that a cycle between the two enzymes under basal conditions could exist which permits a continuous turnover of glycogen. Such a system would explain why active phosphorylase is always seen, even under conditions of net glycogen synthesis. The differences in hormone sensitivity of synthase and phosphorylase would also be accounted for as only one enzyme would have to respond acutely to hormonal influences.

Animals↗
PubMed1976

Meningioma following irradiation.

The case of a young woman who developed initial symptoms of an intracranial mass lesion 17 years after undergoing irradiation for a port-wine stain of the right fronto-temporal and periorbital scalp and face is reported. A right sphenoid wing meningioma was removed 6 years later. The possible relationship betweenthe development of the meningioma and the previous radiotherapy is discussed.

Adult↗
PubMed1976

Exophthalmos and epidural hematoma.

The development of a right exophthalmos in a patient with a left hemispheric epidural hematoma is reported. The parallel development of these two conditions in this unusual case suggests some direct relationship, although it must be recognized that a coincidental relationship is possible. The exact cause of the exophthalmos remains obscure.

Adolescent↗