PubMed Health⌕ Search

Biomedical subjects

B Arensburg

Publications and source records attributed to B Arensburg.

At least 55 records · Page 3Linked to original sources
PubMed1987

Directional dental asymmetry in South Sinai Bedouin isolates.

Dental casts of 242 Bedouin children were used to study directional asymmetry (DA). Results of Student's t-test pair comparison showed that for permanent dentition, 4 out of 24 DA measures were statistically significant whereas for deciduous dentition, 8 out of 20 measures were significant (p less than 0.05). The magnitude of DA was on the average 1% of the total size of the tooth. No preference regarding dimension (buccolingual, mesiodistal) or jaw (maxilla, mandible) was detected for the DA. PCA results demonstrated the independent nature of DA measures in the dentition.

Adolescent↗
PubMed1984

Intra-familial correlations of dermatoglyphic traits in South Sinai Bedouins.

Correlation coefficients for some dermatoglyphic traits of the Muzeina Bedouins of South Sinai were determined in sib-sib, father-son, father-daughter, mother-son and mother-daughter comparisons. From among approximately 3000 members of the tribe, 60 male sib-sib pairs and 33 parental pairs, each with one son and one daughter, were selected for examination. The dermatoglyphic traits included finger pattern types, ridge counts with their intra-individual variability and bilateral asymmetry, and the incidence of palmar patterns. In such a small, biologically isolated and consanguineous population, the correlation coefficients for the diverse dermatoglyphic traits are expected to show some peculiarities. In general, we found them to be lower than in other populations. The difference is small for the complex traits with a multifactorial genetic determination, and more pronounced for the traits with a simpler genetic base. With diminution in the number of genes participating in the realization of a trait, the father-mother correlations increase owing to the intense consanguinity.

Adult↗
PubMed1983

The reciprocal influence of the different finger pattern types on their ridge count values.

The mutual influence of fingertip pattern types, whorls (W), ulnar loops (Lu), radial loops (Lr) and arches (A), on the pattern ridge count (RC) values is evident from the dermatoglyphics of a sample of 606 Israeli Jewish males. The presence of W is associated with an increase in the RC of Lu and Lr of the same individual, and conversely, the presence of Lu, Lr or A coincides with a decrease in the RC of W. The presence of A decreases also the RC of Lu and Lr, but the reciprocal influence does not occur because the RC of A is, by definition, always equal to zero. When two different pattern types concomitantly affect a third type, the net results is an intermediate one. The modifying influence of a pattern on the RC of others is proportional to the number of fingers carrying that pattern. When the total RC of an individual is used for genetic or medical purposes, the reciprocal influences of fingertip patterns on pattern RC values must be considered.

Dermatoglyphics↗
PubMed1982

Mutilation of the uvula among Bedouins of the South Sinai.

Mutilation of the uvula, as practiced by various tribes of Bedouins in the South Sinai, was discovered while carrying out anthropological studies in the area. Partial or total amputation of the uvula is performed on both boys and girls during the first or second year of life, as a ritual custom. Anatomical changes in the soft palate due to the uvulectomy in 115 subjects are described. The remnant of the uvula (scar) was classified according to size as: very large, large, medium, small, trace or none. A notch or kind of cleft of the palate, as a result of the uvulectomy, was considered the most extreme degree of extirpation. The majority (47%) were of small size and a notch was found in 9.6%. Changes in shape and symmetry of the arches of the palate as a result of the uvulectomy are also described. These changes are explained on the basis of the anatomical structure of the palate and uvula. The possible effects of the uvulectomy on health in general and on speech in particular are discussed.

Adolescent↗
PubMed1982

Lewis blood group and ABH secretor systems in some Jewish populations of Israel.

The Lewis blood groups, the secretion of ABH antigens and the frequencies of the related genes were determined in some Israeli Jewish populations of different origins. In total 834 individuals were investigated for ABH antigen secretion and of these, 452 for the Lewis antigens. The frequencies of the le gene in the East European, Central European, North African and Middle Eastern groups were 0.3635, 0.3397, 0.3015 and 0.2293, respectively. The frequencies of the se gene in the same groups were 0.4787, 0.4804, 0.5301 and 0.5468. In a South European and a Yemenite Jewish group, studied for the secretor status only, the obtained se gene frequencies were 0.4879 and 0.4663 respectively. Comparing the four groups studied both for Lewis blood groups and for secretor status, the smallest genetic distance was found between the East and Central European groups, and the greatest, between the East European and Middle Eastern groups.

ABO Blood-Group System↗
PubMed1980

Phosphoglucomutase, adenylate kinase and acid phosphatase polymorphism in some Jewish populations of Israel.

The phosphoglucomutase (PGM1) adenylate kinase (AK1) and acid phosphatase (ACP1) phenotypes were studied in Israeli Jews. In total 934 individuals were investigated for AK1 and of these, 926 for PGM1 and 768 for ACP1 isozymes. From the studied individuals, six groups deriving from Eastern, Central and Southern Europe, the Middle East, North Africa and Yemen were formed. The comparison of the phenotype distribution in these groups by the chi-square test failed to indicate any statistically significant differences with respect to PGM1 phenotypes. With respect to AK1 phenotypes, there were statistically significant differences between the Central European group on the one hand and the Yemenite and South European groups on the other (p less than 0.05), and with respect to ACP1--between the Middle Eastern and the Yemenite groups (p less than 0.01). In the studied groups, the frequency of the PGM11 gene varied from 0.6822 (North African group) to 0.7431 (Central European group), of the AK11 gene--from 0.9099 (Central European group) to 0.9698 (Yemenite group) and of the ACPb1 gene--from 0.6710 (Middle Eastern group) to 0.8194 (Yemenite group). The greatest genetic distances were found between the Yemenite group on the one hand and the Middle Eastern, Central European and East European subgroups on the other.

Acid Phosphatase↗
PubMed1980

Duffy, Kell and P blood group systems in some Jewish populations of Israel.

Duffy, Kell and P blood group systems were investigated in 977 Israeli Jews. Six groups deriving from Eastern, Central and Southern Europe, the Middle East, North Africa and Yemen were compared. The greatest differences between the groups occurred with regard to the Duffy blood group system, where the Fy gene was found at great frequency (0.5879) in the Yemenite Jews, a middling frequency (from 0.1083 to 0.2191) in Jews from the Middle East, North Africa and Southern Europe, and a low frequency of the Fya gene decreased in the following order: East European greater than Central European greater than South European greater than North African greater than Middle Eastern greater than Yemenite group. The shortest genetic distance was found between the Middle Eastern group on the one hand and the Central European and North African groups on the other. The highest values in the genetic distances were observed between the Yemenite and the other groups. Insofar as the Kell and P gene frequencies are concerned, the compared groups were similar. Comparison of the phenotype distribution by the chi-square test showed statistically significant differences between the groups only with respect to the Duffy system.

Adolescent↗
PubMed1979

Anatomical observations on the mylohyoid groove, and the course of the mylohyoid nerve and vessels.

In a study of 390 mylohyoid grooves in dry mandibles and in dissections of the region, the groove conformed to the classic description (that is, it was open along its entire length) in only 83.6% of the cases. In the remaining 16.4%, the sulcus was partially or totally converted to a bony canal by ossification of the membrane that covered it. When only partially converted, the ossification was proximal or distal, single or multiple. This ossification is explained according to the embryological origin of the membrane closing the canal from Meckel's cartilage. The practical importance of these observations in anatomical dissection and in surgical intervention in the region is discussed.

Humans↗
PubMed1978

Handedness, hand-clasping and arm-folding in Israeli males.

Comparative analysis of handedness, hand-clasping and arm-folding frequencies in four groups of adult Israel Jewish males of East European origin (N=562), Central European origin (N=165), Middle Eastern origin (N=191), and North African origin (N=163), indicates a significant similarity between the groups. A high percentage of left-handed individuals was observed in all groups except the Middle Eastern one. Right-hand clasping and left arm-folding predominated in all but the Central European group in which left hand-clasping predominated. When a comparison is made between individuals born in Eastern Europe and those born in Israel to parents of East European origin, the frequency of left handedness was considerably higher among the latter. This may be attributed to an inhibitory effect of the educational system on the expression of sinistrality in the first sub-group. Relationships between handedness and hand-clasping and between hand-clasping and arm-folding was also observed.

Adolescent↗
PubMed1978

Anatomical observations of the foramina transversaria.

Four hundred and eighty foramina transversaria in dry cervical vertebrae of 36 spines and in a number of dissections were studied and classified according to size, shape, and direction of their main diameter. A coefficient of roundness was then elaborated. The variations of foramina appear to follow a pattern at various vertebral levels. The possible factors (in addition to the embryological ones) involved in causing these variations-for example, mechanical stress, size, course, and number of vertebral vessels-were analysed. The importance of the correct interpretation of the variations in the foramina transversaria in radiographic or computerised axial tomography is discussed. The contribution of the present study to the understanding and diagnosis of pathological conditions related to the vertebral artery and its sympathetic plexus is stressed.

Adult↗