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Biomedical subjects

M Nathanson

Publications and source records attributed to M Nathanson.

At least 19 recordsLinked to original sources
PubMed1992

Immunocytochemical expression and localization of protein kinase C in bovine aortic endothelial cells.

Total PKC activity in BAEC incubated for 24 hrs in either 10% serum (FBS) or serum-deprived media (SDM) was similar. However, most of the activity (69%) in the FBS group was detected in the particulate fraction, while it was mainly in the cytosolic fraction (66%) in the SDM group. By confocal microscopy, there was diffuse cytoplasmic localization of the antibodies to the alpha and beta PKC isoforms. gamma PKC was not detected. Treatment of FBS or SDM cells with a phorbol ester resulted in an increase in PKC activity with translocation to the particulate fraction. PKC alpha immunofluorescence redistributed to the perinuclear region whereas PKC beta staining remained mostly cytosolic. Calphostin C, a PKC inhibitor, prevented the phorbol ester-induced increase in PKC activity and translocation.

Animals↗
PubMed1992

Francis X. Dercum.

Explore the source record for details and available documents.

History, 20th Century↗
PubMed1992

Miliary tuberculosis with acute respiratory failure and histiocytic hemophagocytosis. Successful treatment with extracorporeal lung support and epipodophyllotoxin VP 16-213.

A 14-year-old girl with high fever, dyspnea and bilateral miliary nodules on chest X-ray, developed a rapidly progressive respiratory failure associated with histiocytic hemophagocytosis. Histologic examination of bone marrow biopsy revealed tuberculous granulomas with caseating necrosis. We report a pediatric case in which treatment with extracorporeal lung support and epipodophyllotoxin VP 16-213 was successful.

Adolescent↗
PubMed1992

[Acute heart insufficiency in an 8-month-old infant presenting with hypocalcemia and Epstein-Barr virus infection: acute myocarditis? Or primary hypokinetic dilated cardiomyopathy?].

An eight-month-old was admitted for acute congestive heart failure with fever. The respective parts played by hypocalcemia (due to vitamin-D deficiency rickets) and acute Epstein-Barr virus infection are discussed. Hypocalcemia was sufficiently marked to induce heart failure per se but replenishment of calcium stores was followed by only partial improvement in cardiac manifestations. Initial management was difficult because of the risks associated with concomitant administration of calcium and digitalis. After eighteen months during which the patient's status remained stable, evaluation showed that clinical features were consistent with sequelae of acute viral myocarditis. The possibility of primary hypokinetic dilated cardiomyopathy was then considered. Esterified carnitine levels were found to be increased leading to further investigations which outruled mitochondrial cytopathy.

Acute Disease↗
PubMed1992

Juvenile chronic myelocytic leukemia with unusual cytogenetic clonal evolution.

Cytogenetic studies are reported in a case of juvenile chronic myelocytic leukemia with dysmyelopoiesis and skin involvement. The clonal evolution of a 6q-anomaly is described. Hematological and cytogenetic findings suggest a role of hematopoietic stem cell in this patient for whom the outcome was fatal.

Child, Preschool↗
PubMed1979

Beat frequency is bimodally distributed in spermatozoa from T/t12 mice.

Flagellar beat frequencies of spermatozoa from mice of varying genotype were studied using highspeed cinemicrography. Beat frequency was variable but unimodal in two inbred lines, their F1, and an outbred line. In contrast, beat frequency in spermatozoa from T-complex, balanced lethal stocks (T/t6 and T/t12) tended not to vary between individual males of each genotype up to four hours after collection. The two-hour distribution of beat frequency for T/t12 was, moreover, bimodal, suggesting the possible existence of two subpopulations of spermatozoa.

Alleles↗
PubMed1978

Seizures of axial structures. Presumptive evidence for brain stem origin.

Scattered reports, both clinical and experimental, have been accumulating in the past 20 years indicating that true seizures may, indeed, originate from the brain stem and its immediate connections. Four cases are reported that give further strong presumptive evidence that this is so. All the seizures were confined to axial structures (face, tongue, palate, pharynx, diaphragm, and abdomen), and in one case each seizure had an identical "Jacksonian march." The phenomena were documented by 16-mm motion pictures, brain stem signs, and electroencephalography. The EEG consisted of periods of burst activity followed by relative interictal electrocerebral silence.

Abdominal Muscles↗
PubMed1977

Methysergide therapy causing vascular insufficiency of the upper limb.

A 41-year-old woman, who was receiving methysergide maleate for the treatment of severe headaches, had occlusion of the left brachial artery, confirmed by arteriography. The occlusion was believed to result from the use of methysergide and the drug was therefore withdrawn. Within 4 days the distal pulses were normal, as confirmed by arteriography, and she was asymptomatic.

Adult↗
PubMed1976

Physical examination. Frequently observed errors.

A method allowing for direct observation of intern and resident physicians while interviewing and examining patients has been in use on our medical wards for the last five years. A large number of errors in the performance of the medical examination by young physicians were noted and a classification of these errors into those of technique, omission, detection, interpretation, and recording was made. An approach to detection and correction of each of these kinds of errors is presented, as well as a discussion of possible reasons for the occurrence of these errors in physician performance.

Attitude of Health Personnel↗
PubMed1975

The ultrastructure of hepatocytes in alpha-1-antitrypsin deficiency with the genotype Pi--.

The ultrastructural appearance of the endoplasmic reticulum of the hepatocytes was found to be normal in a 5-year-old girl with alpha-1-antitrypsin deficiency with the genotype Pi--. The liver ultrastructure of this variant is therefore different from that of alpha-1-antitrypsin deficiency with the genotype PiZZ in which aggregates of an abnormal, unsecreted alpha-1-antitrypsin accumulate in the endoplasmic reticulum of the hepatocytes. The normal appearance of the endoplasmic reticulum in alpha-1-antitrypsin deficiency with the genotype Pi-- is compatible with the hypothesis, in this variant, synthesis of alpha-1-antitrypsin is completely, or nearly completely, absent; an alternative hypothesis would be that an abnormal alpha-1-antitrypsin is produced by the liver and secreted into the plasma, but disappears rapidly from the plasma.

Carbohydrate Metabolism, Inborn Errors↗
PubMedDate not supplied

[About 2 cases of "dry syndrome" associating xerophthalmy, xerostomy and cutaneous dryness. A new entity or an unrecognized diagnostic? (author's transl)].

Two cases, in children of distinct families, of a particular form of "dry syndrome", are described. This syndrom, which associates xerophthalmy, xerostomy and cutaneous dryness, is congenital and familial. He looks different from previously described diseases or syndroms which include one or several of these three components.

Child↗