Results 261 to 270 of about 66,744 (290)

Autosomal Chromosome Aberrations

1976
Prior to the introduction of cytogenetic techniques in human medicine some 15 years ago, only a single chromosome aberration syndrome, Down’s syndrome, was known clinically, but its etiology was still unclear. By direct chromosome examination, it was later shown that the clinical picture of Down’s syndrome is caused by the presence of an additional No.
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Chromosome‐aberration tests

Food Additives & Contaminants, 1984
Three points related to the subject of chromosome-aberration tests and carcinogenicity screening are dealt with in this paper. First, the relation between chromosome rearrangements and oncogenesis is briefly discussed, to stress the relevance of cytogenetic assays to assessment of the carcinogenic potential of drugs.
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Chromosome Aberrations in Radiation Workers

Journal of Occupational and Environmental Medicine, 1964
Recently published discussions of the possible role of chromosome aberrations in leukemogenesis (1) and aging (2) suggest that an increase in the frequency of such aberrations may carry with it an increased risk of illness. It is of more than academic interest, therefore, that some radiation workers do show a higher frequency of chromosome aberrations ...
Richard E. Ottoman, M. S. Sasaki, Robert C. Veomett, Amos Norman   +3 more
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Chromosome aberrations in a schizophrenia population

Schizophrenia Research, 2003
Cytogenetic abnormalities with schizophrenia may provide a valuable clue to the identification of target loci and successful search for major genes. We have performed chromosomal examinations by using the GTG banding technique on 134 schizophrenics. In 43 patients (32%), random numerical and structural aberrations were detected.
Demirhan O., Taştemir D.
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Chromosomal Aberrations and Aneuploidies of Spermatozoa

2013
Chromosomal abnormalities are relevant causes of human infertility, affecting 2 -14 % of infertile males. Patients with seminal anomalies could be affected by improper meiotic recombination and increased sperm chromosome aneuploidy. Since the transmission of a haploid chromosomal asset is fundamental for embryo vitality and development, the study of ...
Piomboni, P., Stendardi, A., Gambera, L.
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X Chromosome Aberrations

1999
Abstract In this chapter we consider gonadal maldevelopment caused by X-chromosome aberrations. As in Chapter 5, “gonadal maldevelopment” is defined broadly so that it includes defective spermatogenesis due to an extra X chromosome in XXY males and gonadal dysgenesis due to accelerated oocyte attrition in XO females. These two conditions,
Leonard Pinsky, Robert P Erickson, R Neil Schimke   +2 more
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Autosomal chromosome aberrations in ophthalmology

Journal of the Neurological Sciences, 1967
Abstract 1. (1) The eye is very often malformed in cases of chromosome aberration. The following anomalies may be found: chorioretinal degeneration, high myopia, congenital cataract, anophthalmos, microphthalmia, coloboma of the uvea, persistence of the primary vitreous with Reese's retinal dysplasia, palpebral anomalies, etc.
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AUTOIMMUNITY AND CHROMOSOMAL ABERRATIONS

The Lancet, 1964
R. G. Burwell, P.R.J. Burch, N. R. Rowell   +2 more
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Chromosomal aberrations in heavy smokers

Human Genetics, 1978
Lymphocyte chromosomes from 20 heavy smokers were analyzed from 48-h whole blood cultures for the frequency of dicentric chromosomes, ring chromosomes, and chromatid translocations. Compared to controls, these exchange type aberrations occurred more frequently in the smokers.
Jan Herha, Günter Obe
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A SIGN OF CHROMOSOMAL ABERRATION?

The Lancet, 1967
A. Dahlqvist, B. Hall
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