Biomedical subjects
Publications and source records attributed to J Pinkhas.
Tear calcium and magnesium levels were measured in eight patients with hypercalcemia and two patients with hypocalcemia and compared to that of 72 subjects with normal serum calcium and magnesium levels. No correlation was found between tear and serum calcium and magnesium levels. Tear calcium level has no diagnostic importance.
Glycosphingolipids were isolated from the leukocytes of 10 patients with Type I, chronic nonneuronopathic (adult) Gaucher's disease and 12 normal subjects, by silicic acid column chromatography and thin-layer chromatography. Quantitation of the individual glycosyl ceramides was achieved by the determination of hexose and sphingosine content, using colorimetric and fluorometric procedures. Lactosyl ceramide, which is the main glycolipid in leukocytes of normal subjects, was significantly increased in the leukocytes of patients with Gaucher's disease. On the other hand, the amount of glycosyl ceramide, which is the main glycolipid accumulating in the reticuloendothelial cells of patients with Gaucher's disease, was similar in Gaucher and in control leukocytes.
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A favorable response to levodopa in two episodes of hepatic encephalopathy, the latter presenting as acute psychosis, is described in a patient with Budd-Chiari syndrome.
Transatrial membranotomy was performed in a patient with membranous obstruction of the hepatic segment of the inferior vena cava, manifesting as longstanding varicosity and edema of the legs, chronic type of Budd-Chiari syndrome, liver cirrhosis and hypersplenism. The course in this patient and similar ones reported in the literature suggests a conservative approach.
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Erythrocytes of patients with polycythemia vera exhibited increased activity of oxidative pentose shunt, accelerated generation of phosphoribosylpyrophosphate, increased incorporation of 14C-adenine into nucleotides, and increased activity and thermostability of adenine-phosphoribosyltransferase. These abnormalities are attributed to age dependency of the pathways concerned and presence in polycythemia vera of an erythrocyte population younger than normal.
A patient is described in whom CML first presented as blastic crisis. The diagnosis of CML was based upon the findings of Ph(1) chromosome in the bone marrow, basophilia in the peripheral blood, absence of NAP activity in the leukocytes, elevated serum vitamin B(12) and an enlarged firm spleen. CML with blastic crisis as its first expression is relatively rare, as compared to CML in which blastic crisis appears as a phase of prolonged clinically manifest disease.
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Twenty-three episodes of drug-induced agranulocytosis admitted to the Beilinson Medical Center between 1960-1972 are reported. An increased incidence in patients admitted with this condition was noted over the years. Dipyrone (6 episodes in 4 patients) and chloramphenicol (5 episodes in 5 patients) were the drugs most commonly associated with this condition. Four patients died in septic shock. The increased incidence of hospital-admitted patients with drug-induced agranulocytosis is related to the increased use of drugs in the Israeli population.