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Biomedical subjects

E Signer

Publications and source records attributed to E Signer.

71 records · Page 4Linked to original sources
PubMed1977

Bleeding gastric ulcer in a newborn infant diagnosed by transumbilical aortography.

Transumbilical aortography has been utilized for the first time to diagnose the cause of massive upper gastrointestinal hemorrhage in a newborn infant. We consider it a safe and accurate method in cases that meet the following criteria: massive hemorrhage uncontrollable by blood transfusions and supportive medical therapy, and hemorrhage active at the time of study as indicated by fresh blood draining from nasogastric tube.

Aortography↗
PubMed1976

Immunofluorescent antibodies against gliadin: a screening test for coeliac disease.

A sensitive and simple immunofluorescence test for gliadin antibodies is described, which may be suitable as a screening method for coeliac disease especially in cases with no clear-cut indication for performing a biopsy. In serum samples of 19 from 23 patients (83%) with coeliac disease proved by biopsy antibodies against gliadin could be detected. In a control group of 71 children in whom the clinical diagnosis of another malabsorptive disorder was made gliadin-IF-antibodies were found in only 3 children (4%). With better timing of blood sampling (first sample during a period with gluten containing food and in case of a negative result a second sample after 4-8 days of gluten withdrawal) the sensitivity of the screening test will be improved. The described gliadin-IF-test permits the classification of the antibodies into the different immunoglobulin classes. In each child with a positive result IgG antibodies against gliadin were detected. In 9 respectively 4 of the 19 patients with IgG antibodies IgA- respectively IgM-antibodies against gliadin were also found. Antibodies against at least one cow milk protein were identified in nearly all (91%) coeliac patients and in half (49%) of the patients with other malabsorptive disorders.

Antibodies↗
PubMed1975

Gastric emptying in newborns and young infants. Measurement of the rate of emptying using indium-113m-microcolloid.

The rate of gastric emptying was measured in newborns and young infants by a new radio-isotopic method. 28 control babies and 6 infants with projectile vomiting were given a 50 ml standard milk feeding containing 15 muCi of Indium-113m-microcolloid. The radioactivity in the stomach was counted at regular intervals with a gamma-camera. The gastric emptying followed an exponential pattern with a "half-life" of 87 plus or minus 29 minutes in 24 out of 28 control babies. In 6 patients with projectile vomiting gastric emptying was impaired severely. Three of them with hypertrophic pyloric stenosis showed complete stasis of gastric contents. Gastric emptying returned to normal 8-16 days after pyloromyotomy. It is suggested that the radioisotopic technique is helpful in evaluating the severity of pyloric stenosis and that it is of value in studies of the action of pharmacological substances on gastric emptying.

Half-Life↗
PubMedDate not supplied

Activation of N-ras gene in bone marrow cells from a patient with acute myeloblastic leukaemia.

Human tumour cell lines of various histological origin contain genes that can transform NIH 3T3 cells in culture. Most frequently the gene is an activated K-ras gene, more rarely an activated H-ras gene, and sometimes the recently discovered N-ras. Other transforming genes, distinct from ras, have been found in B- and T-cell leukaemias. Since most of the transforming genes have been identified in cell lines, it is still unclear at what stage the genes become activated. We have therefore initiated a study to determine if the presence of a transforming gene correlates with the clinical course of a malignant disease. Here we demonstrate the presence of a transforming N-ras gene in bone marrow cells from a patient with acute myeloblastic leukaemia at the outbreak of the acute disease phase. Fibroblast DNA from the same patient was not transforming. In contrast to HL-60 cells, no alteration of the myc gene was detected.

Bone Marrow↗
PubMedDate not supplied

[Acute spinal syndromes in children and adolescents].

23 children with acute spinal syndromes are presented. The clinical signs were caused by trauma in 11 patients, by extramedullary tumors in 6, by operations (coarctation of the aorta, scoliosis) in 4 and by encephalomyelitis in 2. Motor signs (flaccid paraplegia or paraparesis, monoplegia, bilateral weakness) and changes of reflex intensities were always observed. Most children presented with disturbances of sensory functions and micturition, some exhibited ataxia. In addition to the neurological signs, plain films of the spine were of diagnostic importance after trauma, for tumors myelography and/or computerized tomography were most useful. The unfavourable prognosis of posttraumatic paraplegia may be improved by early application of corticosteroids in very high doses. The value of GM1-ganglioside is controversial. In cases of external compression by tumors a decompression of the spinal cord is urgent. "Spinal cord monitoring" can be used intraoperatively in surgery of scoliosis and coarctation of the aorta to detect neurological complications early. Differential diagnosis and therapies of encephalomyelitis and Guillain-Barré-Syndrome are discussed.

Adolescent↗
PubMedDate not supplied

All-trans retinoic acid as an alternative to chemotherapy in the treatment of acute promyelocytic leukemia.

A 12-year-old girl with acute promyelocytic leukemia has been treated with conventional chemotherapy. The patient remained in complete remission for a year when the first bone marrow relapse occurred. Since reinduction chemotherapy was rejected by the parents, an alternative treatment with oral all-trans retinoic acid was administered. A second complete remission was achieved within 100 days. After 14 months a second bone marrow relapse occurred. All-trans retinoic acid and the combination with interferon-alpha failed.

Child↗