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Biomedical subjects

D Klein

Publications and source records attributed to D Klein.

At least 271 records · Page 15Linked to original sources
PubMed1975

[Xanthofibrogranulomatosis, pontine glioma, multiple nevocytic nevi and albinism (authors transl)].

A case of retroperitoneal fibrosis with ureter compression is reported. Clinical picture and course were determined by the presence of an additional tumor (astrospongoblastoma) of the pons. Extraretroperitoneal tissue changes found at post mortem examination were shown histologically to be foreign tissues of the same type deposited in the retroperitoneal space (disseminated xanthofibrogranuloma). Possible connections between the disseminated xanthofibrogranuloma, the pontine tumor and an albinism also present and multiple nevocytic nevi of the skin are discussed.

Adult↗
PubMed1975

Relationship of indole production and antibiotic susceptibility in the Klebsiella bacillus.

Of 2,442 Klebsiella strains isolated from clinical specimens at the University of Minnesota hospitals, 18.3% were found to be indole positive. A randomly selected equal number of indole-positive and indole-negative control isolates, characterized by 27 biochemical tests and by serotyping against 72 antisera, were tested against 14 antibiotics. The results indicated a greater incidence of multiple drug resistance among the indole-negative strains among those that produced indole. The organisms in the former group, in comparison to their indole-positive counterparts, were significantly more resistant to nitrofurantoin, tetracycline, chloramphenicol, neomycin, streptomycin, nalidixic acid, and kanamycin. Both groups of organisms were similar in their degree of resistance to ampicillin, carbenicillin, cephalothin, sulfisoxazole, colistimethate, polymyxin B, and gentamicin. The biochemical properties of the two indole groups were essentially identical. Correlation between serotype and multidrug resistance was inapparent.

Anti-Bacterial Agents↗
PubMed1975

45,X Turner's syndrome in monozygotic twin sisters.

A 7-year-old girl was admitted to the hospital for anaemia, secondary to intestinal blood los (melaena). She was found to have 45,X Turner's syndrome. Her identical twin sister also had Turner's syndrome with a 45,X chromosome complement. According to various criteria the probability of monozygosity was 0.9905. Although the incidence of twinning is greater than usual in families of patients with Turner's syndrome, affected cases have only been observed in twin sisters on six occasions. It seems therefore that the 45,X chromosome complement itself is not a factor predisposing to twinning, but that in some families, a factor is at play, which cuases either twinning or the 45,X aneuploidy, or both.

Aneuploidy↗
PubMed1975

Psychiatric evaluation services to court referred drug users.

This paper reports on the description and outcome of one hundred youthful drug abusers referred from family court for psychiatric evaluation and treatment recommendation. The average referral, both male and female, was a 16-year-old white Catholic from a middle class background who was diagnosed as having a personality disorder. Significantly more males than females showed pathology in early childhood such as behavior problems in school and hyperactivity. Follow-up data collected up to 6 months after evaluation and treatment recommendation indicated that approximately half of the clients showed improvement in terms of work and/or school adjustment, social relations, and drug use.

Achievement↗
PubMed1975

[2 unusual cases of myotonic dystrophy, the first presenting as Thomsen's disease, the second with pharyngoesophageal motility disorders leading to broncho-pulmonary complications].

Two rather special cases of myotonic dystrophy are described. The first concerns a 35-year-old woman, in whom the generalized myotonia and the early commencement of the disease (at the age of 2 years) led to the diagnosis of Thomsen's disease until a specific myotonic cataract was discovered at the age of 26. The consanguinity of the patient's parents may partly explain the "intermediary" nature of the clinical picture and suggests, in this case, an autosomal recessive heredity. The second patient, a 27-year-old man, suffered, in addition, from changes in the pharyngo-esophageal motility, leading to a deviation of the alimentary flux which was disclosed by cineradiography and which was responsible for repeated broncho-pulmonary infections. The authors discuss the problem of the differential diagnosis between Thomsen's disease and Steinert's disease and emphasize the importance of a biomicroscopic examination of the lenses to detect the abortive and pre-clinical forms of myotonic dystrophy. They point out that digestive troubles are sometimes the first symptoms of which the patient complains, and stress, in this connexion, the plurisymptomatic nature of Steinert's disease.

Adult↗
PubMed1975

[The chromosomal syndromes (author's transl)].

Considering the results of modern cytogenetics in the area of chromosomal abberation, we can adopt without restriction two demands formulated by G. Koch (1971). First, further systematic research on mentally subnormal children should be carried out to clarify whether forms of chromosomal-genetic abnormality based on previously unknown structural alterations in one or several chromosomes can be discovered among those labelled "mentally subnormal". Second, the chromosomal-genetic forms of mental subnormality should be differentiated psychologically in close cooperation with child and adolescent psychologists and psychiatrists.

Abortion, Habitual↗
PubMed1975

[A case of Goldenhar syndrome: acute vitamin A intoxication in the mother during pregnancy].

The authors describe the case of a boy aged 2 1/2, who showed at birth a bilateral epibulbar dermoid, preauricular appendices on the left side and other malformations suggesting Goldenhar's syndrome. The history disclosed that in the second month of pregnancy the mother had accidentally swallowed 10 ml of an oily solution of Vitamin A during a laboratory manipulation. In their discussion, the autonrs analyse the teratogenic action of Vitamin A during embryonic development and review the aetiologies found in cases of Goldenhar's syndrome.

Abnormalities, Drug-Induced↗
PubMed1973

Serological identification of an Ir-region product.

Reciprocal immunization of congenic lines differing in the middle portion of the H-2 complex leads to the production of antibodies which react with an antigen or antigens controlled by the Ir region. The antigen designated Ir-1.1 seems to be present only on a subpopulation of lymphocytes from lymph nodes and spleen. It is absent on bone marrow cells.

Animals↗
PubMed1973

Production of volatile nitrogenous compounds from the degradation of streptomycin by Pseudomonas maltophilia.

Ammonia, methylamine, and pyridine were detected in broth filtrates of a streptomycin-degrading strain of Pseudomonas maltophilia during growth on streptomycin as a sole carbon and nitrogen source. Ammonia and methylamine, quantitatively measured by conversion to chromophores with picryl sulfonic acid, were found to accumulate in broth, whereas pyridine concentration increased in the early stages of streptomycin degradation and then decreased as the degradation of the antibiotic neared completion. Exogenous pyridine was metabolized by washed-cell suspensions. Use of N-streptomycin-methyl-(14)C showed that the methylamine arose from the N-l-glucosamine-methyl moiety of streptomycin. Methylamine was an end product and was not further metabolized by cells.

Ammonia↗