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Biomedical subjects

E Reuer

Publications and source records attributed to E Reuer.

6 recordsLinked to original sources
PubMed1979

[Mechanisms common to the development of malformation in congenital and sporadic forms of atrial septal defect (type II) (author's transl)].

Familial prevalence of some congenital cardiopathies leads to the conclusion that genetic factors might be involved. The case histories are presented of three families with atrial septal defect, Type II (ASD II) in which autosomal dominant inheritance was assumed on account of the pedigree analysis. Each family member was examined serologically, morphologically and morphometrically. One family was also tested for cytogenetic abnormalities. It is highly probable that the gene responsible for the defect is linked to the HLA system (Lod score = + 3.612) and is, therefore, located on the short arm of chromosome 6. The morphological examinations demonstrated uniformity of individual ear traits in related patients; moreover, the palmar dermatoglyphics showed a tendency to shortening of main line C, to ulnar and distal shifting of the carpal triradius and to an increase in hypothenar patterns. In addition a study was carried out of patients with apparently sporadic cardiopathy. A similar trend as to palmar configuration was observed. An attempt was made to connect known factors causing malformations with the results of this investigations.

Adolescent↗
PubMed1977

[Sex differences in hair color].

The hair-colours of an unselected Vienese sample (8399 male, 8176 female) of all ages and ascertained by the author himself have been analysed with regard to their sexual distribution. The comparisons of the age-groups necessary because of the individual age-changes of the hair-colour did not reveal any significant sexual dimorphism. Only during the periods of intensified growth the girls show a slight tendency to darker hair than the boys at the same age because of their faster development.

Adolescent↗
PubMed1976

[Pilometric methods-contributions and critical aspects].

On the basis of 13,000 single-hair-measurements and their statistical data a sample-size of 100 hair-measurements could be proved as an absolute minimum for the determination of the individual hair-thickness. If the standard deviation of a hair sample exceeds 15 mu its size should be increased accordingly. All the individual determinations of hair-thickness basing on samples consisting of less than 100 single hairs will lead to false results. In order to test if the measurements of hair-cross-section and of longitudinal top plan view result in approximately equal, constant, individual means, one part of the hairs of each of the samples was measured according to the cross-section, the other part according to the longitudinal method; into more than 10,000 single hairs thus have been studied. The means of the corresponding samples are within the expected confidence intervals. There exists consequently no difference between the results of the two measuring methods. Nevertheless both procedures require at least measurements of 100 unselected single hairs per sample in order to obtain individual representative means. Practicability of direct square-measurements and indirect calculation methods are shown, their advantages as well as their disadvantages discussed. Attention is drawn to much more correct calculation formula.

Adolescent↗