Search PubMed⌕ Search

Biomedical subjects

W R Timperley

Publications and source records attributed to W R Timperley.

At least 73 records · Page 4Linked to original sources
PubMed1977

Three cases of communication syringomyelia secondary to midbrain gliomas.

Three cases of midbrain gliomas are descrbied clinically and pathologically. In each case high pressure symptoms were followed by visual disturbance and the onset of syringomyelia symptoms before death. All the patients had hydrocephalus. In one case with concomitant syringobulbia, the syrinx appeared to due to CSF communicating with the cord cavity through the tissues of the brain stem. In the other cases the communication between the CSF pathways and the syrinx was at the usual site, through the central canal at the obex.

Adolescent↗
PubMed1977

The development of glycolytic and pentose phosphate shunt enzymes in human brain.

A quantitative enzyme analysis of 32 fetal human brains of 6--42 weeks gestational age range was carried out for the major glycolytic and pentose phosphate shunt enzymes. A critical period of raised enzyme levels was observed at 14 weeks. The glycolytic rate was probably controlled by the activities of hexokinase and phosphofructokinase which appear from the development patterns to have independent genetic sites. A rise in most enzyme activities was experienced in the final weeks of gestation towards levels consistent with those of adult tissues. Pentose phosphate shunt enzyme levels remained virtually unchanged during gestation after 14 weeks.

Brain↗
PubMed1976

A reassessment of vascular factors in relation to intravascular coagulation.

Sural nerve biopsy was performed in twenty-four diabetic patients, with clinical and electrophysiological evidence of diabetic neuropathy. Material from an autopsy case was also examined. Vessels plugged with fibrin were seen within nerve in nine cases. In three cases fibrin was observed tracking into the vessel wall and in four, older thrombus was observed in vessels. Areas of necrosis in nerve bundles were seen in two of the latter. In two patients there had been a preceding episode of intravascular coagulation. Fibrin deposition within small vessels could well play a part in damaging the diabetic nerve and a disturbance of the balance between deposition and removal by fibrinolysis could explain phasic variation in the symptoms of neuropathy.

Adult↗
PubMed1976

Cerebro-hepato-renal syndrome with parental consanguinity.

A case of cerebro-hepato-renal syndrome with some unusual features is reported. The neuropathological findings are described in detail. Electronmicroscopy showed astrocytes in the demyelinated areas of the brain to contain granules composed of laminated osmiophilic material. These structures could be abnormal mitochondria. The parental consanguinity in this case would further support an autosomal recessive mode of inheritance.

Astrocytes↗
PubMed1975

Platelet abnormalities in diabetic peripheral neuropathy.

Abnormal platelet function has been demonstrated in 20 patients with diabetic peripheral neuropathy. The results are compared to those obtained from 19 matched diabetic patients with no clinical evidence of complications and 20 matched normal control subjects. Platelets from patients with diabetic neuropathy showed an increased sensitivity to the aggregating agents adenosine diphosphate and adrenaline. Spontaneous platelet aggregation was demonstrated in both groups of diabetic patients.

Adenosine Diphosphate↗
PubMed1974

Disseminated intravascular coagulation as a consequence of cerebral damage.

Three cases with intracranial lesions developed evidence of disseminated intravascular coagulation which was confirmed at necropsy. The factors engendering this state, including release of potent thromboplastin from neural tissue are discussed and the danger of this intermediary mechanism of disease increasing the mortality of intracranial disease is demonstrated. Careful haematological investigation of all patients with intracranial disease is therefore advised, especially if they manifest evidence of a bleeding tendency.

Adult↗
PubMed1973

Ectopic pinealoma: an unusual clinical presentation and a histochemical comparison with a seminoma of the testis.

A patient with ectopic pinealoma first presented with apparent anorexia nervosa and hypernatraemic coma. A history of diabetes insipidus two months previously was not known on admission to hospital. The diabetes insipidus was unmasked by the administration of steroids. Neuroendocrinal and neuropathological aspects of the case are discussed with reference to the march of symptoms due to the growth of the tumour. Histochemical evidence is presented supporting the similarity between ectopic pinealoma and seminoma which suggests that they may more properly be referred to as atypical teratomas.

Acid Phosphatase↗
PubMed1972

Pancreatic alkaline phosphatase and a tumour variant.

Alkaline phosphatase has been extracted from human pancreas with n-butanol and has been shown to have distinctive isoenzyme characteristics when compared with the enzymes of small intestine and of normal serum. The enzyme has been demonstrated histochemically in a carcinoma of the pancreas and also in an islet cell tumour and the tumour enzyme has been shown to be unique, not only electrophoretically, but in being remarkably heat sensitive and in being activated by low molarities of urea.

Adenocarcinoma↗