鄂温克族与鄂伦春族的群体遗传学研究(续)

本次调查采印了645名鄂温克族和424名鄂伦春族中、小学生和部分牧民、猎民的指纹和掌纹。观察了各型指纹出现率、指纹总嵴数、atd角和掌褶纹等指标。 1.各型指纹出现率 弓(A)、尺侧箕(L^u)、桡侧箕(L^r)和斗(W)的出现频率见表11。额左旗和陈旗鄂温克人中斗多于箕,与汉族相似。有些指纹型在某个手指上较为多见。

Identification of Dermal Crease Patterns as a Link between Genetics and Periodontitis:Reliability and Credibility

Introduction:The disruptions in the ectodermal layer during intrauterine growth in the process of the formation of epidermal ridges can be linked to the association between dermatoglyphics and abnormalities of the tooth and periodontium.Given the genetic linkage of periodontal disease this study was hypothesized at observing the association of chronic periodontitis,aggressive periodontitis,and individuals with healthy periodontium as per the 1999 AAP classification of periodontitis with their fingerprint patterns and ridge count.Materials and Methods:Patients belonging to an age cohort of 18-50 who visited the department of periodontics and implantology were included in the study.Patients’periodontal status was determined and was enrolled in the study.A total of 114 subjects were compared,where 38 subjects belonged to the individual group of periodontal condition that are designated as Group A(healthy),Group B(chronic periodontitis),and Group C(aggressive periodontitis).A total of 1140 fingerprints were collected.They were analyzed and classified according to their patterns and also the ridges were counted.Results:The comparison between three groups showed a statistically significant difference between increased percentage frequency of radial loops(28%)in chronic periodontitis and plain whorls(26.3%)in aggressive periodontitis.There was a significant difference between ridge count among all the three groups,the highest being in healthy and the least between aggressive periodontal conditions.Conclusion:Observations of the study show that there was a difference in fingerprint pattern between patients of all the three periodontal conditions indicating a link between epidermal ridges and condition of periodontium.

Fingerprint Patterns in Students with Learning Disability:Evidence of Sexual Dimorphism and Potential for Diagnosis in a Nigerian Population

This study assessed the sex-based relationship and prediction pattern between fingerprint patterns,ridge counts,and learning disability(LD).This cross-sectional study recruited 300 students(150 LD and 150 non-LD)aged between 3 and 29 years.The fingerprint patterns(arch,whorl,ulnar loop,and radial loop)and the ridge count:total finger ridge count(TFRC),absolute ridge count(ARC),ulnar ridge count(URC),and radial ridge count(RRC)were accessed.Students with LD showed a significantly higher whorl and a significantly lower ulnar loop than students without LD.There is a significant association of whorl pattern in the first right finger of subjects with LD compared to non-LD counterparts.TFRC,ARC,and URC were significantly higher in females with LD than non-LD females(P=0.01,0.03,and 0.001).Males with LD showed significantly lower TFRC,RRC,and URC counts than the non-LD males(P=0.02,0.01,and 0.001).TFRC can predict LD in males(odds ratio[OR]=1.010,P=0.032)and females(OR=0.993,P=0.012).Fingerprint pattern and ridge counts are sexually dimorphic in subjects with or without LD.TFRC and whorl fingerprint patterns may be vital predictive and screening tools for LD in males and females.

A dermatoglyphic study of the Amis aboriginal population of Taiwan

Amis is the largest aboriginal population in Taiwan. The previous dermatoglyphic studies of the Amis only reported limited data. In this study, we collected and analyzed the dermatoglyphs of 200 Amis in-dividuals, and we reported a wide range of dermatoglyphic variables including total finger ridge count, a-b ridge count, atd angle, axial triradius percent distance, and frequencies of fingerprint pattern, pal-mar thenar pattern, palmar interdigital pattern, and simian line. This study is the first comprehensive dermatoglyphic research of Amis since 1960s, and its dermatoglyphic data will be useful for future re-search in anthropology, genetics and medicine.

A dermatoglyphic study of the Kavalan aboriginal population of Taiwan

By the 1970s, a number of dermatoglyphic studies of Taiwan aborigines (Gaoshan nationality) had been published, however in each only a few dermatoglyphic variables were addressed. Since that time, little new research has been conducted. In this study, we collected and analyzed the dermatoglyphs of 100 individuals of Kavalan, a Taiwan aboriginal population, and we reported a wide range of dermatoglyphic variables including total finger ridge count (TFRC), a-b total ridge count (a-b RC), atd angle and axial triradius percent distance (tPD), and frequencies of fingerprint pattern, palmar thenar pattern, palmar interdigital pattern, palmar hypothenar pattern, and simian line. This study is the first comprehensive dermatoglyphic research of any Taiwan aboriginal population.

Development of chromatographic fingerprint for quality analysis of diploid and tetraploid Lonicera japonica

OBJECTIVE:To develop the chromatographic fingerprint of Lonicera japonica(L.japonica)and evaluate the effects of polyploidy on the quality of L.japonica.METHODS:High-performance liquid chromatography(HPLC)methods used to establish the chromatographic fingerprint were developed.The quality of 11 batches of diploid L.japonica and 13 batches of tetraploid L.japonica collected from different regions across China were analyzed.The contents of five active compounds,consisting of chlorogenic acid,rutin,galuteolin,isochlorogenic acid A and quercetin,were further detected in L.japonica.RESULTS:The chromatographic fingerprint established by the optimized HPLC method was verified for qualitative analysis of L.japonica.Quantitative analysis showed that the contents of chlorogenic acid,isochlorogenic acid A,and quercetin in tetraploid plants were higher than those in diploid plants,whereas rutin and galuteolin contents in tetraploid plants were lower than those in diploid plants.CONCLUSION:The developed HPLC method is suitable for qualitative analysis of L.japonica.Polyploidy was indicated to influence the chemical properties of L.japonica.Tetraploid L.japonica shows potential for utilization as a medicinal plant with different active components.

Assessment of Dental Caries and Oral Hygiene Status Among Twins

The study of twins provides a unique opportunity to evaluate the genetic and nongenetic contributions to a variance of multitude of traits.Twin research has revealed the impact of a strong genetic component to the variance of many dental traits.The present study was conducted to assess the dental caries and oral hygiene status in monozygotic(MZ)and dizygotic(DZ)twins.A random sample of 129 MZ and DZ twin pairs aged 6-15 years were included in this study.The zygosity of twin pairs was initially recorded by facial appearance and later determined by dermatoglyphics.Dental caries and oral hygiene status were recorded in these twin pairs and the data were subjected to statistical analysis.No significant difference was observed in the mean decayed,extracted due to caries and filled teeth(deft)in primary dentition and decayed,missing and filled(DMFT)in permanent dentition scores and oral hygiene status in MZ and DZ twin pair&The similarity observed in oral health status reflects the effects of a shared environment in MZ and DZ twin pairs.