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Biomedical subjects

T E Blecher

Publications and source records attributed to T E Blecher.

18 recordsLinked to original sources
PubMed1991

Bilateral retinal artery occlusion due to mitral valve prolapse.

We report a case of bilateral retinal artery occlusion due to mitral valve prolapse. Most patients with retinal ischaemia in whom it is found have not been previously known to have it. Since it is a common condition it would seem essential that it be included in the differential diagnosis of amaurosis fugax and retinal artery occlusion if future ischaemic events are to be prevented. All patients with retinal ischaemia should have a full cardiovascular examination supplemented by echocardiography.

Aged↗
PubMed1990

The M1 Kegworth aircraft disaster: experience in three hospital blood transfusion laboratories and the regional transfusion centre.

Eighty-eight survivors of an aircraft accident on the M1 motorway were taken to three major hospitals, two of which were teaching hospitals, in the immediate vicinity. We describe the effects of this on the three blood transfusion and haematology laboratories concerned and on the regional transfusion centre, describe how the work was processed, and list the lessons learnt.

Accidents, Aviation↗
PubMed1988

What happens to the microspherocytosis of hereditary spherocytosis in folate deficiency?

The case is presented of an elderly man in whom hereditary spherocytosis (HS) had been diagnosed many years previously. He also had diverticulitis and was referred because of increasing anaemia (Hb 7.7 g/dl). He was suffering from diarrhoea and anorexia, and was taking a very poor diet. Serum investigations showed low folate and vitamin B12 levels. His blood film, despite the history of HS, showed very few spherocytes, and the red cell osmotic fragility curve was virtually normal. Instead, the blood film showed normocytes and oval macrocytes, mostly with normal central pallor. He was treated with vitamin B12 injections and folic acid tablets. On this treatment, the Hb rapidly rose, the macrocytosis disappeared, the film appearances reverted to the classical picture of HS with large numbers of microspherocytes, and the osmotic fragility curve to the picture of markedly increased fragility typical of HS.

Aged↗
PubMed1985

C-reactive protein levels in neutropenic patients with pyrexia.

This study describes the experience of a clinical haematology unit in dealing with pyrexial episodes in 62 patients. Serum C-reactive protein levels were serially estimated and proved to be useful in following the course of the illness. No significant difference could be demonstrated in the C-reactive protein levels of those patients with bacteriologically proven illnesses, those in whom a clinically evident infection was present, and those with a 'pyrexia of unknown origin'. However, those patients in whom disease activity was thought to be responsible for the pyrexia had significantly lower C-reactive protein levels compared with those patients who had a septicaemic illness.

Adolescent↗
PubMed1978

Synthesis of procoagulant antihaemophilic factor in vitro.

The cells which produce the procoagulant part of antihaemophilic factor (factor VIII-C) in normal people have remained unknown. Normal blood leucocytes cultured in vitro with phytohaemagglutinin synthesised a procoagulant with the properties of factor VIII-C. The procoagulant was inhibited by human VIII-C inhibitor and itself absorbed human VIII-C inhibitor--properties which are regarded as specific for factor VIII-C. Unexpectedly, cultured leucocytes from haemophiliacs also synthesised the procoagulant in similar amounts. Possible explanations and implications of these findings are briefly considered.

Anticoagulants↗
PubMed1977

Mononuclear cell-membrane "fluidity": a study in some haematological malignancies.

The polarization of fluorescence from diphenyl hexatriene embedded in the membranes of intact peripheral-blood mononuclear cells has been measured and used to assess the "microviscosity" or fluidity of the membrane. Cell preparations were examined from patients with various types of leukaemia and related conditions in which circulating primitive cells may occur. Significantly lower fluorescence polarization values were obtained in all samples from patients with chronic lymphocytic leukaemia, but normal results were obtained in cases of chronic granulocytic leukaemia, myelosclerosis, solid lymphomas and in acute leukaemias in remission. In relapsed acute leukaemia, fluorescence polarization indicated reduced "microviscosity" of the cell membrane when large numbers (greater than 10(9)/1) of primitive cells were present; normal "microviscosity" was indicated when less than 10(9)/1 primitive cells were present. However, exceptions occurred in both cases, and the technique failed to give warning of imminent relapse in one case. Our findings suggest that a reduction in "microviscosity" as indicated by this technique is not a general property of the blood leucocytes in all types of leukaemia, and that the technique cannot, at present, be regarded as an alternative method for detecting circulating primitive cells.

Adult↗
PubMed1976

Comparison of uridine uptake at 24 hours with thymidine uptake at 72 hours in phytohaemagglutinin-stimulated cultures of pregnant and other subjects.

As a possible more rapid test of lymphocyte reactivity to phytohaemagglutinin (PHA) than the standard estimation of thymidine uptake after 72 hours (T72), uridine uptake after 24 hours (U24) was studied in a total of 96 individuals. No reliable correlation between the two estimations was found in 29 outpatients showing a wide range of reactivity to PHA nor in 30 healthy control subjects nor in 16 pregnant subjects. Conflicting reports have appeared in the literature as to whether lymphocyte reactivity to PHA is normal, depressed or enhanced in pregnancy. Our group of pregnant subjects showed a significant depression of both U24 (P less than 0-01) and T72 (P less than 0-02) results as compared to normal female controls. Cultures of semipurified lymphocytes prepared by gradient centrifugation on a further 21 normal control subjects showed no better correlation between U24 and T72 results than the above unpurified-leucocyte cultures.

Cells, Cultured↗
PubMed1975

Blood coagulation.

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Blood Coagulation↗