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Biomedical subjects

R Bierme

Publications and source records attributed to R Bierme.

At least 37 records · Page 2Linked to original sources
PubMed1980

Platelets in myeloproliferative disorders. I. A comparative evaluation with certain platelet function tests.

Certain platelet functions were evaluated in 24 patients with secondary polycythaemia (SP) and in a large number of patients suffering from myeloproliferative disorders (MD'S): 89 patients with chronic myeloid leukaemia (CML) at different stages of development, 58 with polycythaemia vera (PV), 23 with essential thrombocythaemia (ET), and 25 with agnogenic myeloid metaplasia (AMM). Bleeding time, epinephrine-induced platelet aggregation and adhesiveness agreed with those generally reported in the literature; they are independent of thrombocytosis, the haemoglobin level and the leucocyte count. Macrothrombocytosis, evaluated by an electronic method, was only found in CML, mainly during acute blast crisis. An increased percentage of light platelets was a constant feature in all groups except in the SP and in 20% of the PV. The most severe abnormalities were observed in AMM and CML in the acute stage; in the chronic phase of CML there is no correlation between the severity of platelet abnormalities and the survival of the patients.

Blood Platelets↗
PubMed1978

Increased level of factor VIII complex in severe arterial hypertension.

Factor VIII complex was studied in patients presenting arterial hypertension. Visceral involvement was quantified using a clinical index calculated from ocular fundus, renal function and left ventricular hypertrophy data. A significant correlation was found between the mean arterial pressure, the visceral involvement and the level of complex VIII. Nevertheless, other data obtained in different patients (Conn's disease) suggest that the visceral involvement (and not the mean arterial pressure) is the main determining factor in the increase of factor VIII complex.

Factor VIII↗
PubMed1977

Heterogeneity of erythrocyte pyruvate kinase deficiency and related metabolic disorders in patients with hematological diseases.

In several patients suffering from congenital non-spherocytic hemolytic anemia or from malignant hemotological disorder associated with erythrocyte pyruvate kinase (PK) deficiency, a metabolic study has been carried out involving the following biochemical determinations: assay of red cell enzyme activities; estimation of glucose consumption; measurement of the rate of glycolytic intermediates; and, in some cases, enzyme purification and characterization of the PK variant. Metabolic equilibrium most probably does not depend on kinetic characteristics of PK molecules. Furthermore, the data obtained allow separation of cases with congenital non-spherocytic hemolytic anemia (hereditary defect) and acquired PK deficiencies.

Adenine Nucleotides↗
PubMed1976

Distribution of G6PD types in the population of southwest France: common variants and new variants.

Glucose-6-phosphate dehydrogenase was purified from blood samples originating from 33 subjects living in the 'Midi-Pyrenees' region (Southwest France). Biochemical and electrophoretic characteristics of several enzymatic variants were revealed. The distribution of the mutations in the subjects studied gave the following results: (1) Meditteranean Gd(-) and Gd(-)A identified variants; they constitute the main part of our observations. (2) Two original variants confirmed by the WHO International Reference Laboratory, that is: Gd(-) Toulouse and Gd(+) Luz-Saint-Sauveur; the latter mutation did not produce any haematological disorder. Absence of chronic haemolytic anaemia as well as a high rate of favism could be found in the families studied. As it is generally observed in Mediterranean regions, Southwest France population is characterized by a certain heterogeneity in biochemical and genetic mutations.

Erythrocytes↗
PubMed1976

[Von Willebrand factor activity and thrombophilic states. A review (author's transl)].

After a brief survey of some physiologic properties of Von Willebrand factor activity (VIII r WF) the numerous clinical states with an increase of this activity are described. The authors report their own results concerning sepsis, chronic arteritis of lower limbs, diabetes, toxemia of pregnancy. In most cases the increase of VIII r WF activity appears as a sign of vascular injury and/or the consequence of tissular damage.

Arteriosclerosis↗