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PubMed1986

Dermatoglyphic findings in fragile X syndrome: a causal hypothesis points to X-Y interchange.

Dermatoglyphic analysis which included topological pattern elements, pattern intensities and dermatoglyphic measurements was performed in 90 male and 110 female fragile X subjects. Data on cytogenetic and intellectual assessments were also available in these individuals. The following conclusions have been drawn from the obtained results. 1. The fragile X syndrome is associated with an appreciable deviation in dermatoglyphic patterns and measurements, especially in males, which may be utilized for diagnostic purposes. 2. The variability in patterns and measurements is considerably increased which, together with irregular distributions, indicates that the fragile X condition may not be homogeneous. 3. The type of deviation in either sex is not inconsistent with the effect of an excessive dosage of the Y, combined with a deficit of the X chromosome and is, therefore, indicative of the X--Y chromosomal rearrangement as an initial lesion in fragile X. Since the deviation may not be specific, direct evidence for such rearrangement should be sought by means of molecular techniques.

Adolescent↗

PubMed1989

Hereditary gingival fibromatosis: report on three families and dermatoglyphic analysis.

Some syndromes that include gingival fibromatosis are associated with abnormalities of the hands and feet. The purpose of this work was to establish whether gingival fibromatosis, as an isolated disease, can be connected with disturbances in the development of the digitopalmar structures. In three families with 40 members, fibromatosis manifested in 16 (7 males and 9 females). The disease was transmitted as an autosomal dominant trait. Dermatoglyphics were analyzed in the proband in each family and in their fathers who had fibromatosis. The analysis showed the presence of patterns in IV interdigital areas in all patients. The fathers of 2 probands had double loops in the IV interdigital area, which is very rare in the general population (frequency, 0.6%). The position of the axial triradius was moderately distal (t') in 1, and markedly distal (t") in another, and in 4 it was borderline (tb). Total finger ridge count was increased, which indicated the increased size of the volar embryonal pads. Distorted dermatoglyphic findings may be considered microform abnormalities of the fingers and hands. Since dermatoglyphics are highly genetically controlled and reflect the status of the embryonal pads, the results suggest disharmony in the development of the mesodermal structures of the hands.

Adolescent↗

PubMed1980

Dermatoglyphs in carriers of a balanced 15;21 translocation.

Cytogenetic and dermatoglyphic features were studied in a large family with an inherited 15;21 translocation. Of 35 healthy members of the family, 21 carried the translocation chromosome and 14 were chromosomally normal. There were six members with Down's syndrome who had the translocation. Dermatoglyphic studies showed that carriers of this balanced translocation had the following peculiarities significantly more often than the general population. On the hands, they had ulnar loops on the fingertips, symmetrical high terminations of the A line, symmetrical ulnar loops on the hypothenar areas, distal loops in the 3rd interdigital areas, open fields in the 4th interdigital areas, axial triradii in the distal position, and single transverse palmar creases (Sydney lines). On the feet, they had small distal loops on the hallucal area and distal loops in the 4th interdigital areas. The translocation carriers also had significantly more often than non-carrier relatives symmetrical high terminations of the A line, open fields in the 4th interdigital areas, distal axial triradii, and Sydney lines. On the feet, they had small distal loops on the hallucal areas, distal loops in the 4th interdigital areas, and tibial loops on the proximal hypothenar areas. The data obtained from this study, and especially the values of the Walker and general indices, indicate that some of the dermatoglyphic stigmata of Down's syndrome are directly associated with the 15;21 translocation carrier state and can therefore be used for predicting that state.

Chromosomes, Human, 13-15↗

PubMed1975

Digital and palmar dermatoglyphs of South African Whites.

Digital and palmar dermatoglyphs in a random sample of normal Whites from Durban are described. The sample consisted of 200 males and 200 females. Features examined included frequency and distribution of finger patterns, digital and total ridge count, a-b score, and palmar topography. Data from this study are compared to similar data from South African Negroes, Indians, and Coloureds (mixed racial origin) and several outstanding racial characteristics are demonstrated in the dermatoglyphic profiles. It is suggested that the Indians' dermatoglyphic profile is dominant to those of Whites and Negroes.

Black People↗

PubMed1976

Genetical distance and dermatoglyphic characters. I. Interpopulation distance coefficients.

The distance coefficients between two relatively isolated population groups in Poland, based on various combinations of dermatoglyphic non-measurable characters were estimated. These were compared with the overall dermatoglyphic distance coefficients estimated separately for left and right, as well as with the serologic distance coefficient, based on ABO, Rh and Duffy blood groups. Dermatoglyphic distance coefficients, estimated from quantitative variables (pattern intensities) using Penrose's C2H analysis of variance method, were also introduced for a comparison. The differences in frequencies between two populations, separately for each character, were also compared with its heritability values.

ABO Blood-Group System↗

PubMed1999

Minor physical anomalies, dermatoglyphic asymmetries, and cortisol levels in adolescents with schizotypal personality disorder.

OBJECTIVE: A relationship between schizotypal personality disorder and schizophrenia has been documented in behavioral genetic studies, and there are similarities in the cognitive deficits and brain abnormalities associated with these disorders. Adolescents with schizotypal personality disorder are of particular interest because the postpubertal period is a critical one for the development of a DSM axis I disorder. It is likely that some schizotypal adolescents will remain stable over time, some will improve, and a subgroup will develop schizophrenia. This study tested the hypotheses that, like schizophrenic patients, schizotypal adolescents manifest an elevated rate of minor physical and dermatoglyphic anomalies, both of which suggest prenatal neurodevelopmental abnormalities. Cortisol release is also of interest because of evidence that the hypothalamic-pituitary-adrenal axis may influence the behavioral expression of vulnerability to schizophrenia. METHOD: Minor physical anomalies, dermatoglyphic asymmetries, and salivary cortisol levels were measured in three groups of adolescents: 20 with schizotypal personality disorder, 20 with other personality disorders, and 26 with no disorder. Assessments began at noon, and four saliva samples were obtained at hourly intervals. RESULTS: The schizotypal personality disorder group showed more minor physical anomalies and dermatoglyphic asymmetries than the normal comparison group and higher cortisol levels than both of the other groups. Group differences in cortisol level were most pronounced at the beginning of the evaluation. Cortisol level and age were positively correlated. CONCLUSIONS: The findings support the assumption that schizotypal personality disorder is associated with perturbations in fetal neurodevelopment and, under some circumstances, a heightened cortisol response.

Adolescent↗

PubMed1992

Dermatoglyphic evidence of fluctuating asymmetry in schizophrenia.

Fluctuating asymmetry provides a measure of an organism's capacity to buffer adverse factors that could disturb its development. It is estimated from the differences between theoretically identical right- and left-sided structures. Dermatoglyphic fluctuating asymmetry has been recently used to investigate developmental disorders. Fingerprints and palm prints of schizophrenic patients, which had been the subjects of an earlier report of conventional dermatoglyphic trait frequencies, were reanalysed to determine their level of fluctuating asymmetry. A review of the diagnostic protocols and clinical records used in the original study indicated that most of the 482 subjects would have met DSM-III-R criteria for schizophrenia. The schizophrenic sample had significantly higher levels of fluctuating asymmetry on four dermatoglyphic traits, the finger-ridge counts, fingerprint patterns, the palmar atd angles and palmar a-b ridge counts, than controls. This finding supports the results of two earlier studies, and its relevance to the roles of genetics, foetal insults, and developmental anomalies of the brain in the aetiology of schizophrenia is discussed.

Adult↗

PubMed2001

Clinical features of incontinentia pigmenti with emphasis on dermatoglyphic findings.

Incontinentia pigmenti is a syndrome characterized by both systemic and oral manifestations. Presented here are the dental, clinical, radiological, genetic and dermatoglyphic findings of a 6 year old female case and her family members. The following features were apparent: oligodontia in maxillary and mandibular arches in both dentition, peg-shaped incisors and brown lesions on the body surface. No other problems were observed. The case had remarkable dermatoglyphic findings such as hypothenar loops associated with distally displaced axial triradii on both palms, reduced total finger and summed palmar a-b ridge-counts, decreasing plantar pattern intensity on the left sole. The other family members had similar dermatoglyphic characteristics. The paternal grand father, the father and the brother had eye defects.

Anodontia↗

PubMed1994

Dermatoglyphics in individuals with asocial behaviour.

The patterns of fingertip prints (dermatoglyphics) in Swedish series of sexual offenders of law compared with common offenders of law and normal individuals were analysed. The dermatoglyphic patterns in common offenders of law did not differ from those in normal individuals. The group of sexual offenders of law showed statistically significant differences (p < 0.001) in the dermatoglyphic patterns compared to the samples of common criminals and normals.

Crime↗

PubMedDate not supplied

Dermatoglyphics of mothers of Malawian children with spina bifida cystica: a comparative study with female controls.

UNLABELLED: Dermatoglyphic traits are formed under genetic control early in development and do not change thereafter, thus maintaining stability not affected by age. METHODOLOGY: We determined the dermatoglyphic traits of mothers of children with spina bifida cystica and compared then with controls matched for number, age and parity, by counting and classifying palmar, plantar and digital ridge pattern configurations of arches, loops, whorls and ridges based on standard techniques. RESULTS: Palmar pattern types, showed absence of arches, significantly higher frequency of whorls (P > 0.05), lower total finger ridge count (TFRC) and higher Pattern Intensity Index (PII) in these mothers than in the controls (P > 0.001). However, no significant differences were observed between both groups in atd angle and a-b ridge count (P = 130, 0.70 respectively). Plantar pattern types showed loops restricted to the first two digits and absence of arches in the first digit in these mothers compared to controls in whom there were loops in the first four digits and a 100% frequency of arches. Similarly, PII was higher and Dankmeijer's Index (DI) lower in these mothers than in controls. CONCLUSION: Our findings demonstrate dermatoglyphic differences between both groups that suggest that mothers presenting with these traits are more predisposed to giving birth to children with spina bifida cystica.

Case-Control Studies↗

PubMed1976

[Inheritance of human finger and palm dermatoglyphic characteristics].

The degree of genetic determination of 25 quantitative dermatoglyphic characteristics has been studied on family: twin material: 45 pairs of MZ and 75 single-sex DZ twins; and 53 single-sex "parent-child" pairs. Approximating formulae were used to estimate main components of phenotypic variance due to additive interaction of genetic factors, to non-linear effects (intralocus dominance) and to the effect of total-familiar and random environmental factors. All the finger dermatoglyphic characteristics studied had a high degree of genetic determination (G greater than 0,80), and for most of them the contribution into the large variance of intralocus dominance effects was comparable with that of additive gene interaction, included in the determination of these characters. There are some palm dermatoglyphic characteristics ("ad" distance "cd" comb counting, "bad", "adt" and "cda" angles), which degree of genetic determination is low (G less than 0,35). At least ten quantitative finger and palm dermatogliphic characteristics with a high degree of genetic determination can be used for special studies in frames of multidimentional genetical analysis, including determination of twin zygosity type. Earlier described "indices" (using twin data) of relative role of genetic and environment factors in the determination of populational variability of quantitative characters are considered. None of them is shown to be a reliable estimate of the coefficient of genetic character determination. The use of these indices in practical studies can result in wrong conclusions on the degree and the character of genetic determination of quantitative characters.

Dermatoglyphics↗

PubMed1999

Dermatoglyphic analysis in bipolar affective disorder and schizophrenia--"continuum of psychosis" hypothesis corroborated?

Dermatoglyphic features are thought to be indicators of events in the early embryonal stages. They might also be associated with the developmental disorders of the central nervous system (CNS) including schizophrenia. Dermatoglyphic features of 92 male patients with bipolar affective disorder (BPAD) (unipolar depression and schizoaffective psychosis were excluded from the study) were compared with those of 195 males with schizophrenia (SCH) and both with those of 200 male controls (control group-CG). DSM-III-R criteria were used for the diagnostic evaluation. Quantitative analysis showed only one statistically significant difference between BPAD and SCH patients groups, regarding the c-d ridge count of the left hand. The canonical discriminant analysis did not permit correct classification (only 59.23% of cases were correctly classified) between BPAD and SCH. Numerous quantitative dermatoglyphic features of both BPAD and SCH differed significantly from those of the control subjects. Finger ridge counts as well as palmar ridge counts were markedly lower in BPAD and SCH as compared to the controls. These findings are not in contradiction with the hypothesis claiming that psychoses are a set of diverse expressions (due also to noninherited factors) of a single underlying entity.

Adult↗

PubMed1999

Dermatoglyphic characteristics of a population from the central Rhodopes (south Bulgaria).

The finger and palmar prints of a total of 386 individuals (182 males and 204 females) at an age between 10 and 18 years from the region of the villages Petkovo and Banite, situated along the river Malka Arda in the Central Rhodopes, were studied. The following dermatoglyphic traits were analyzed: pattern intensity index (PII), the main line or Cummin's index (MLI), the frequencies of the proximal palmar triradius (t), the true hypothenar patterns (Hy) and the accessory interdigital triradii (AIT). The specific dermatoglyphic complexes after Heet were also determined for the population under study. A peculiarity of this population is the appearance of a clearly expressed Eastern Complex (EC), which accounts for 53.1% in the males and for 48.8% in the females. These values of EC and the calculated dermatoglyphic distances (DD) after Heet show a similarity between the examined population and a number of populations from the Volga region, Northern Caucasus, Middle Asia and Siberia. This similarity could be explained with the preservation of the genetic heritage of the proto-Bulgarians, one of the three main components of the modern Bulgarians.

Adolescent↗

PubMed2001

Dermatoglyphics in 46, XY females.

Dermatoglyphics is known to be one of the best available diagnostic tools in genetic disorders. This paper aims to find out the diagnostic characteristic dermatoglyphic features in cytogenetically confirmed 46, XY female patients. The total number of patients studied (46, XY females) were 31 and the control consisted of 30 males and 30 females. Dermatoglyphic features, studied and tabulated, were: (a) Finger pattern frequency, (b) total finger ridge count (TFRC), absolute finger ridge count (AFRC), a-b ridge count, 'atd' angle and (c) palmar patterns eg, simian crease, Sydney line, hypothenar pattern, interdigital patterns. Results confirmed significant differences between the 46, XY females and the control groups: (i) 46, XY females had increased ulnar loops but decreased whorls as compared to control males (overall finger pattern frequency). (ii) The right thumb in 46, XY females had less whorls and more ulnar loops than both male and female control groups (individual finger pattern frequency). (iii) 46, XY females had lowered TFRC, AFRC, a-b ridge count than corresponding control groups (both control males and females). Significant differences were not observed for the 'atd' angle, interdigital patterns, hypothenar pattern, simian crease and Sydney line.

Case-Control Studies↗

PubMedDate not supplied

[Pathology of dermatoglyphics in ocular diseases].

The paper studies dermatoglyphics, viewed from a pathological perspective, on a group of 200 blind subjects or suffering from other grave congenital ocular affections, many of them hereditary, living in the province of Moldavia, from which 400 finger prints and palms have been collected. The observation to be made in that the advanced degree of sight's affection, up to the total loss, is correlated with an ample and strong pathological charge of the digital and palmar dermatoglyphic image of the subjects affected, suggestively expressed at the sample's level by a higher incidence of the distortions with serious medical implications, quite close to that recorded at deaf-mutes, mental handicapped people, in the grave congenital cardio-vascular affections, or at parents with malformed children from Moldavia. From the multitude of dermatoglyphic distortions put into evidence, the author considers that it is only one that might be specific to the serious congenital grave ocular affections, that is a certain disposal of the epidermal ridges, as a dense or very dense network at the level of the Th/I, in a ratio of 80% with women and 38% with men. The very high frequency of this distortion for females subjects might assume that the gene responsible for such a pathological configuration is placed on chromosome X.

Dermatoglyphics↗

PubMed2003

Intergenerational trend of some dermatoglyphic traits in Vaidyas of West Bengal, India.

In order to investigate the intergenerational change of dermatoglyphics, fingerprints of 400 individuals were collected from an endogamous caste Vaidyas of Barasat, West Bengal. Results were compared with the data of an earlier sample of Banerjee collected in 35 years before on the same community of the same area. As it is generally known that dermatoglyphics is selectively neutral, thus if no other evolutionary forces play a role, we cannot expect any change of dermatoglyphic characters after several years. In the present study, non-significant change in the frequency of pattern and more or less same PII have been observed in both sexes. But significant quantitative differences were found between the two samples. These differences may not be due to the change of intra-uterine environment, rather due to the inter-observer error of these two studies and the small sample size of the earlier study. Because though same methods were used in both studies, inter-observer variation is much possible in ridge counting than pattern type determination.

Adult↗

PubMed2004

Inter-sex and intra-sex differences in quantitative digital dermatoglyphics of Sardinian-speaking groups.

In this study, we analysed inter-sex differences within two linguistic groups from the Sardinian linguistic area and intra-sex differences between the two groups by means of 41 quantitative digital dermatoglyphic variables: 20 digital dermatoglyphic traits (radial and ulnar ridge counts on each of the 10 fingers), 15 digital dermatoglyphic directional asymmetry variables, total finger ridge count, bilateral summed radial and ulnar finger ridge counts, an index of asymmetry between homologous fingers, and two indices of intra-individual diversity of finger ridge counts. The comparisons between males and females within the same linguistic groups and between the males of the two groups and the females of the two groups were carried out with the Mann-Whitney test at a prefixed level of alpha = 0.05, using the Bonferroni correction for multiple comparisons. The results indicate a strong similarity of the two linguistic groups in the inter-sex differences, whereas there are no significant differences between them for either males or females. The similar pattern of sexual dimorphism and the homogeneity of the males and females of the two groups suggest a common genetic matrix of these Sardinian-speaking groups.

Cultural Evolution↗

PubMed2005

Asymmetry and diversity of dermatoglyphic traits: population comparison in five endogamous groups of West Bengal, India.

Five different endogamous populations encompassing the main social ranks in the caste hierarchy of West Bengal, India were analyzed. To compare variability in populations with contrasting ethnohistorical backgrounds, analysis of variance, Scheffe's test and cluster analysis were performed, as based on dermatoglyphic variables, namely, 22 quantitative traits and 36 indices of diversity and asymmetry. The present study reveals that: 1. Overall disparities among the 5 populations are expressed only in finger ridge counts on the Ist and Vth digits and PII, in a-b ridge counts, in endings of main lines A and D, and in MLI on the palms; 2. Heterogeneity is greater in fluctuating asymmetry than in directional asymmetry; 3. There is a greater heterogeneity in the 22 quantitative traits than in the 36 indices of diversity and asymmetry, with females contributing more than the males; 4. The highest contribution to population variation is by Lodha among five populations; 5. Inter-group variations are homogeneous in most of the variables, which does not correspond with the relationships to caste hierarchy of these populations; 6. The dendrograms based on dermatoglyphic variables demonstrate that the traditional grouping of Indian populations, based on caste hierarchy, may not be a reflection of their genetic origin, in that the pattern of clustering corresponded best with the known ethnohistorical records of the studied populations; 7. Hence, dermatoglyphic affinities may prove quite useful in tracing the ethnohistorical background of populations.

Dermatoglyphics↗