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PubMedDate not supplied

A developmental approach to the interpretation of dermatoglyphic data from Papua New Guinea and the Faroe Islands.

This study examines the influence of pattern intensity index (PII) on total ridge count (TRC) and the mean ridge count of whorls and ulnar loops. The date are principally finger print ridge counts and pattern types of 1005 Papua New Guineans (608 Waskia speakers from Karkar Island and 397 Yagaria speakers for Lufa sub District). In addition, in order to test whether some of the findings also apply to a dermatoglyphically very different population, data from a sample of 297 Faroe Islanders are analysed. The well known increase in TRC with PII is principally attributed to an increase in the mean ridge count of both whorls and ulnar loops, not as might be supposed to the increase in the proportion of whorls (overall the larger pattern type). The ratio of the larger ridge count to the smaller one provides a measure of whorl symmetry, which appears to increase with PII. The results are interpreted in terms of, and are in support of, the developmental hypothesis of dermatoglyphics reviewed by Mulvihill and Smith (1969).

Black People↗
PubMedDate not supplied

A dermatoglyphic survey of Kenyan schoolchildren.

The article reports on progress in the analysis of data from a dermatoglyphic survey of 6235 Kenyan schoolchildren, drawn from some 60 ethnic populations. The findings indicate considerable variation within Kenya for a majority of dermatoglyphic traits examined, often approaching the full sub-Saharan African range. The examination of inter-population relationships within Kenya is complex, owing to inconsistencies in population rankings both between phenetically unrelated traits and between the sexes. Moreover, no appreciable clustering of populations along linguistic or ethnic lines was detected during multivariate investigation.

Child↗
PubMedDate not supplied

A study of digital dermatoglyphics in Ireland.

Handprints obtained from 600 Irish subjects (274 males and 326 females), drawn from all counties of Ireland, were analysed. There was no clear evidence of any differences between the four great provinces of Ireland, nor between east and west, such as were shown by comprehensive blood group data, and it is concluded that Ireland can be regarded as dermatoglyphically homogeneous. Comparisons of the Irish quantitative and qualitative digital dermatoglyphics with those from other samples in Britain, and from other European countries, show that Ireland occupies a near-extreme position in the European range. These results are regarded as compatible with the interpretation from blood group evidence, that Ireland represented a region of refuge for an ancient population in the face of continuing colonizing pressure from the east in prehistoric and historic times, and traces of that ancient population are detectable in the genepool today.

Adolescent↗
PubMedDate not supplied

Digital dermatoglyphic patterns of Moroccan Arabs: relationships with Mediterranean populations.

Dermatoglyphic finger patterns and pattern intensity were examined in a sample of 204 (105 males and 99 females) adults from the authochthonous Arab population of south central Morocco. No significant sex differences were found for the overall finger pattern incidence or for the pattern intensity index. A high incidence of arches is the most remarkable characteristic of this population as compared to other Mediterranean groups. The significant differences from two previous sets of Moroccan data indicate a remarkable heterogeneity within the present day Moroccan population. Also important is the differentiation of this sample from other north African ethnic groups such as Berbers and Tuaregs. An analysis of the dermatoglyphic relationships using R-matrix analysis, shows a relative proximity between this Moroccan series and other southwest European groups as compared to north African populations.

Adolescent↗
PubMed2001

Dermatoglyphics of a high altitude Peruvian population and interpopulation comparisons.

Studies of genetic structures of Andean human populations have not been numerous, even though these studies could be used to answer questions concerning migration routes of the indigenous peoples who populated America. Such studies could provide basic genetic information and clarify uncertainties surrounding genetic relatedness of South American indigenous peoples. This present work describes, quantifies, and analyzes the digital and palmar dermatoglyphics of 120 people in the community of San Pedro de Casta, Perú. The results were then compared using distance analysis to all other Peruvian population values studied to date and other South American populations. The dermatoglyphic indicators studied were the distribution of digital pattern frequencies, the total ridge counts (TRC), the pattern intensity index (PII), the atd angle, and the a-b ridge counts. The results did not show statistically significant differences for digital patterns between hands, neither within a sex nor between sexes. The means and standard deviations of PII and TRC were 12.32 +/- 3.97 and 112.18 +/- 45.09, respectively. The means and standard deviations for the other two indicators were the following: atd angle, 94.85 degrees +/- 12.33; and a-b ridge counts, 81.57 +/- 9.06. The distance analyses results suggest the existence of two different genetic lines among high altitude populations, as well as the need for further research.

Adolescent↗
PubMed2002

Further evidence that congenital dermatoglyphic abnormalities are associated with psychosis: a twin study.

The presence of abnormal palmar flexion creases (APFC) and dermatoglyphic ridge dissociation (RD) may constitute enduring evidence of a prenatal insult that occurred before the third trimester of intrauterine life. We examined these dermatoglyphic abnormalities in a twin study of psychotic disorders. RD and APFC were analyzed in a monozygotic (MZ) twin sample from the Maudsley Hospital in London (11 normal control pairs, 16 pairs concordant for psychosis, 9 pairs discordant for psychosis, 1 concordant triplet, and 1 triplet with one affected member). The risk of either RD or APFC was 44 percent in affected twins and 20 percent in nonaffected twins (odds ratio = 3.25, 95% confidence interval: 1.03-10.31; one-sided p = 0.023). In the group of MZ twins discordant for psychosis, discordance for RD or APFC always paralleled discordance for psychosis (one-sided p = 0.078), suggesting the operation of nongenetic factors. The results confirm previous work suggesting the possibility that nongenetic factors early in pregnancy contribute to the liability to develop psychosis in later life.

Adult↗
PubMed1986

Dermatoglyphics in medicine.

The relative frequencies of various dermatoglyphic features have been reviewed for chromosomal disorders. When combined with other clinical features of a particular disease, dermatoglyphics can serve to strengthen a diagnostic impression and may be useful in screening select individuals for additional diagnostic studies.

Chromosome Aberrations↗
PubMedDate not supplied

Dermatoglyphics in Prader-Willi syndrome.

The finger-, palm-and sole-prints of thirteen patients with Prader-Willi syndrome have been analysed. Some information has also been obtained from another case. The topological classification has been used for describing palms and soles. Frequencies of finger pattern types, data on finger ridge-count and maximal atd angles are included. Relevant published data has also been considered in making assessments. It is concluded from the evidence available that the dermatoglyphics of patients with the syndrome differ little, if at all, from those of the normal population. Pattern intensity on hands, and particularly feet, is low. Dermatoglyphics, therefore, are not a useful criterion in the diagnosis of the syndrome.

Adolescent↗
PubMed1979

Dermatoglyphic findings in Rubinstein-Taybi syndrome.

The dermatoglyphics of seven patients with Rubinstein-Taybi syndrome and their seventeen family members were compared with those of 250 male and 250 female controls. The most striking dermatoglyphic findings of the patients were the increased frequency of arches, decreased frequency of ulnar loops and reduced ridge-counts on the finger-tips, particularly on the thumbs, lower a-b ridge-counts, increased frequency of I, Ir, II loops, e, f, and t'' triradii, decreased frequency of H loops and tb triradii on the palms, increased frequency of If loops, decreased frequency of I loops, f and p triradii on the soles. The relatives of the patients had more radial loops on the finger-tips, I and Hr loops and t' triradii on the palms, II, III, loops, f and z triradii on the soles.

Abnormalities, Multiple↗
PubMed1979

Dermatoglyphic distances and position of 21 trisomy mosaics.

The position of 21 trisomy mosaics with an average proportion of trisomic cells approximating 0.5 in relation to normal subjects and those with complete 21 trisomy has been evaluated by means of dermatoglyphic distances, using samples of 142 mosaics, 302 normal controls and 225 complete 21 trisomics for males and females separately and combined. Distances were calculated by means of the simplified D2k method. Penrose's "size and shape" analysis of variance has been applied for comparison to obtain distance coefficients, C2H, based on pattern intensities. Results indicate that mosaics are not intermediate but much closer to 21 trisomics in spite of the fact that the average proportion of trisomic cells in blood approximates 0.5; secondly, that the degree of deviation from the intermediate position of the mosaic sample is roughly proportional to the degree of cytological mosaicism. The position of mosaics is appreciably more intermediate in respect of finger-tip patterns than in respect of palmar and sole loops and triradii. The results obtained here have thus given evidence for the usefulness of dermatoglyphic distances, which enable all the differences in frequencies or means of the respective characters to be conveniently represented by a single number, in studies of the abnormal development of phenotypic characteristics in cases of incomplete trisomy.

Dermatoglyphics↗
PubMed1981

Pseudopseudohypoparathyroidism with lymphoedema and abnormal dermatoglyphics.

This paper describes a woman with pseudopseudohypoparathyroidism (PPHP) who had intractable lymphoedema and also abnormal dermatoglyphics. The findings were quite distinct from those in two previously reported cases of pseudohypoparathyroidism (PHP). Dermatoglyphics may prove useful in the diagnosis of PPHP but may also provide a clue to the factors which distinguish PPHP from PHP.

Adult↗
PubMed1982

Dermatoglyphic analyses of 24 individuals with the Prader-Willi syndrome.

Dermatoglyphic parameters of 24 PWS individuals, 14 males, 10 females, were examined using standard techniques. Nomenclature followed that of Schaumann & Alter (1976). There were no differences found in the position of the axial triradius or the frequency of hypothenar patterns, but there was a decrease in fingertip ulnar loop patterns in both sexes with an increase in whorls in males (P less than 0.01) and whorls and arches in females (P less than 0.05). In males, the main line A terminated in the thenar area on the left palm more frequently than in the controls (P less than 0.01) and generally the main line A terminated low in both sexes. The total finger ridge counts were not different from controls indicating smaller than usual pattern size. Of 48 hallucal patterns, 26 were loops, 21 were whorls and there was one arch. This study confirms previous data that there are no pathognomonic dermatoglyphic distortions in PWS.

Adolescent↗
PubMed1985

Discriminant analysis of dermatoglyphic sole and palm patterns in Danish cri du chat probands and normal controls.

Dermatoglyphic sole and palm patterns were studied in Danish cri du chat probands and in two control groups in order to estimate the diagnostic usefulness of the patterns. A linear discriminant function was developed based on three sole variables (I, III, IV) and four palm patterns (I, axial triradius, simian lines and IV + IVU + IVD), respectively. The palm patterns gave a better separation than the sole patterns. Only one of the 31 probands was not classified correctly from both sole and palm patterns. Dermatoglyphic analysis may therefore be of some diagnostic use along with other clinical features in cases with suspicion of the cri du chat syndrome.

Chromosome Deletion↗
PubMed1978

Dermatoglyphic and radiographic findings in a mother and daughter with pseudohypoparathyroidism.

The dermatoglyphic features of a mother and daughter with pseudohypoparathyroidism were compared with those of 19 other reported PHP cases and with findings typical of 45,X Turner syndrome. Our observations included large patterns with a predominance of whorls, unusual accidental patterns on the third fingers, elevated total and absolute finger ridge counts, extralimital digital triradii, intermediately placed axial triradii, and a single complete transverse palmar crease. With barium-coated hand radiographs, the positions of the palmar digital triradii were compared with those of the underlying metacarpal and carpal bones. Normally, the fourth digital triradii (c) are superficial to the epiphyseal region of the proximal phalanx, near the fourth M-P joint. In our cases, the c triradii were distal to the proximal phalanx, near the fourth M-P joint. In our cases, the c triradii were distal to the M-P joint, adjacent to the diaphysis of the proximal phalanx. These findings, related to post-natal differences in growth potential of osseous structures and overlying dermal ridge tissues in this disease, may also be relevant to other syndromes with abnormal development of the hand. The need for further delineation of PHP dermatoglyphics and comparison of findings with data from Turner syndrome and normals is stressed.

Adult↗
PubMed1978

The dermatoglyphic pattern of the trisomy 10p syndrome.

Dermatoglyphic findings are reported for six members of a family in which two patients have partial trisomy for the short arm of chromosome 10(p13 leads to pter) and there are two unaffected carriers of the balanced translocation t(5;10)(p15;p13). The patterns are compared with those of nine other published cases of trisomy 10p. The following dermatoglyphic features appear to be characteristic for the trisomy 10p syndrome: frequent whorls and a high total ridge count on the finger prints and on the palms, C-lines terminating in space 11 (2nd interdigitum), B-lines terminating in space 9(3rd interdigitum), axial triradii t'', high atd angles, abnormal creases on the palms and soles, and general dysplasia of the papillary ridges.

Chromosomes, Human, 6-12 and X↗
PubMed1980

Dermatoglyphic patterns in the Sjögren-Larsson syndrome.

The finger- and palm dermal-ridge patterns of all Swedish cases with the Sjögren-Larsson syndrome (SLS) were studied. The dermatoglyphic patterns of the SLS material showed variations from the normal material. This indicates an early prenatal pathological influence on the formation of dermatoglyphics in SLS.

Adolescent↗
PubMed1982

Fetal dermatoglyphics.

Dermatoglyphic studies were performed on 24 aborted human embryos in whom major chromosomal aberrations had been revealed by amniocentesis. Prints were obtained from the embryos by the Hollister method. An analysis was done using patterns on finger tips and the atd angle was measured in degrees. The Penrose classification was used to describe the locations of the various palm and foot patterns. Twenty-two out of the 24 embryos showed dermatoglyphic deviations that correlated well with the cytogenetic diagnosis. The fetuses had the following disorders: 7 with trisomy 21, 2 with trisomy 18, 2 with trisomy 13, 3 with structural autosomal aberrations and 10 had a sex-chromosome aberration.

Abortion, Legal↗
PubMed1982

The dermatoglyphic pattern of the Kabuki make-up syndrome.

Dermatoglyphic analyses of 12 patients with the newly recognized Kabuki make-up syndrome revealed a combination of unusual dermatoglyphic patterns. They included frequent fingertip ulnar loop patterns (72%), the absence of digital triradius c or d (25%), an interdigital triradius bc or cd (33%), hypothenar loop patterns (67%), and ulnar loop patterns in the fourth interdigital area (17%). Other unusual findings included persistence of fingertip pads (58%), a single flexion crease of the fourth or fifth finger (25%), and an excess of minor flexion creases of the palm (92%).

Dermatoglyphics↗