A Sitek
Biographic Data
| ID | 17895 |
|---|---|
| NAME | A Sitek |
| GIVEN NAMES | A |
| FAMILY NAME | Sitek |
| SIGNATURE | SITEK A |
| AFFILIATIONS | University of Lodz |
| ORCID | 0000-0002-6802-1997 |
| VERIFIED | Yes |
| TOTAL WORKS | 24 |
| TOTAL CITATIONS | 3 |
| WORKS AS AUTHOR | 24 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2010 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Validation of candidate SNPs and CpGs for human face prediction
Background: Human facial genetics remains challenging due to the complexity of facial morphology, its highly polygenic basis, and the combined influence of genetics, environment, age, and lifestyle on facial appearance. Objective: To develop predictors of human facial appearance that could aid facial reconstruction in forensic anthropology and predict facial appearance using DNA-based methods alone. Subjects and methods: Data from ~800 individual…
Are facial indicators good markers of sexual dimorphic differences?
Background: Facial indices are commonly used to assess facial masculinization and feminization and are thought to reflect sexually selected traits linked to physiological, behavioural, and psychological characteristics. However, evidence for consistent sex differences remains inconclusive. Objective: To examine sexual dimorphism in facial indices commonly used to quantify facial masculinization and feminization in a contemporary Polish population…
Potential Predictor of Epigenetic Age Acceleration in Men
OBJECTIVES: Second to fourth digit ratio is widely known indicator of prenatal sex hormones proportion. Higher prenatal androgenization results in longer fourth finger and lower 2D:4D index. The aim of this study was to determine whether the 2D:4D digit ratio is associated with DNA methylation (DNAm) age dependently on sex. MATERIAL AND METHODS: The study included 182 adults (106 females and 76 males) with a mean age of 51.5 ± 13 years. The inves…
The age difference in 2D
In this study a widely debated association between 2D:4D digit ratio and age was investigated. The study material included 960 individuals (530 females and 430 males) from Central Poland aged between 6-79 years. The information about age was obtained via survey filled in by study participants or, if underaged, their parents. The direct measurements of the second and fourth finger were performed to assess the 2D:4D digit ratio. The 2D:4D digit rat…
Association of saliva 25(OH)D concentration with body composition and proportion among pre‐pubertal and pubertal Polish children
OBJECTIVES: Due to increasing problems with obesity and vitamin D deficiency among children, studies that tackle both problems together are needed. METHODS: Data were collected from 182 randomly selected children aged 6-13 years in primary schools in central Poland. Measures included anthropometric dimensions, body composition, questionnaires completed by participants' parents, and saliva samples. The level of 25(OH)D was assessed from the saliva…
Familial factors more importantly modify the age of achieving motor developmental milestones than duration of breastfeeding amongst Polish children
0.6568) in studied group of children. The results showed that parental age and education may affect the offspring's gross motor development, though effect sizes are small and directions of influence vary between fathers and mothers. The study underlines the importance of familial factors over the breastfeeding duration impact on time of developmental milestones.
Odontological analysis of Polish children with unilateral cleft lip and palate
Tooth size, being the effect of interaction of genetic and prenatal factors, could be of importance in interpreting the multifactor causes of cleft lip/palate. Publications indicating decreased tooth parameters, no dental differences, or larger dimensions of teeth in cleft lip/palate patients. Researchers report mostly mesiodistal (MD) measurements of maxillary (affected) teeth. There is a lack of data for buccolingual (BL) diameters. Both MD and…
The association between socioeconomic status, duration of breastfeeding, parental age and birth parameters with BMI, body fat and muscle mass among prepubertal children in Poland
Body composition can be linked with the duration of breastfeeding, SES, parental age, birth weight and birth length.
Further Evidence of an Association Between Low Second-to-Fourth Digit Ratio (2d
Males and females differ in their preference for occupations and sporting activities, and differ also in risk-taking attitudes. In addition to other explanations, prenatal hormone exposure has been implicated in these gender-associated differences. The ratio of the relative lengths of the second-to-fourth digits (2D:4D) is a proxy indicator of prenatal exposure to testosterone relative to oestrogen. The 2D:4D ratio has been found to be associated…
Do skin and hair pigmentation in prepubertal and early pubertal stages correlate with 2D
OBJECTIVES: In most human populations women are less pigmented than men. However, before puberty, boys tend to have lighter skin than girls. Previous research has shown that skin pigmentation in European women is negatively correlated with digit ratio (2D:4D). Therefore, it has been hypothesized that skin pigmentation in females is partially controlled by prenatal hormones. The aim of this study was to examine the correlation between 2D:4D and pi…
Association of five SNPs with human hair colour in the Polish population
Parental smoking during pregnancy shortens offspring's legs
Selected gene polymorphisms effect on skin and hair pigmentation in Polish children at the prepubertal age
).
Association of FTO and TMEM18 polymorphisms with overweight and obesity in the population of Polish children
The objective of the study was to verify whether or not FTO rs9939609, rs9926289 and TMEM18 rs4854344, rs6548238, rs2867125 variants are important risk factors for overweight and/or obesity in Polish children aged 6-16 (n=283). FTO rs 9939609 and rs9926289 exhibited a strong codominant obesity-predisposing effect of genotypes homozygous for minor alleles (OR=5.42, 95% CI: 2.04-14.39, p=0.0006). The important finding of the study is increased risk…
Prenatal factors associated with the neonatal line thickness in human deciduous incisors
Relationship between pre-natal factors, the perinatal environment, motor development in the first year of life and the timing of first deciduous tooth emergence
An earlier onset of tooth emergence in children exposed to maternal smoking during pregnancy seems to provide further evidence for disturbed foetal development in a smoke-induced hypoxic environment
Association of FTO gene with obesity in Polish schoolchildren
The goal of the study was verification of fat mass and obesity-associated (FTO) gene polymorphisms as significant risk factors of obesity in the population of Polish children. Body mass index (BMI) and DNA were evaluated, where DNA was extracted from saliva, collected from 213 children at the age of 6–13 years. DNA was genotyped by PCR (polymerase chain reaction) and HRM (high resolution melting) techniques, as well as by direct sequencing. Three…
Is increased constitutive skin and hair pigmentation an early sign of puberty?
Self-assessment of attractiveness of persons with body decoration
Second to fourth digits ratio (2D
This aims of this research are to determine if the 2D:4D digit ratio is related to subjective pain experience during tattooing and to examine gender differences therein. The study involved 43 male and 28 female Polish adults recruited from two tattoo salons in Wroclaw and Leszno in Western Poland. These subjects were asked if they felt pain during their tattooing and answers were recorded as ‘Yes’ or ‘No’. The ventral surface lengths of the secon…
Frequency of under- and overweight among children and adolescents during the economic transition in Poland
Effects of psychological stress on skin and hair pigmentation in Polish adolescents
The effects of psychological stress, gender and age on hair and skin pigmentation levels were evaluated in the reported study. The material included Polish high-school and university students aged 18–22 (in the age range 17.50–22.49). All subjects who had sunbathed or used tanning beds or lamps, skin tanning agents, tanning extenders and/or medical agents affecting skin pigmentation during the 60 days preceding the beginning of the study were exc…
Biometric Characteristics of the Pelvis in Female-to-Male Transsexuals
Tattooing and Body Piercing - What Motivates You To Do It
Background: Body ornamentation is becoming more and more popular, especially among young people. Aims: To establish the sociodemographic characteristics of people with tattoos or body piercing and to analyze the motivations for body ornamentation. Methods: The questionnaire studies were undertaken in Lodz — one of the largest cities in Poland. The data was collected from a group of 968 people, 476 of whom had a piercing and 492 a permanent tattoo…
The association between socioeconomic status, duration of breastfeeding, parental age and birth parameters with BMI, body fat and muscle mass among prepubertal children in Poland
Body composition can be linked with the duration of breastfeeding, SES, parental age, birth weight and birth length.
Biometric Characteristics of the Pelvis in Female-to-Male Transsexuals
Tattooing and Body Piercing - What Motivates You To Do It
Background: Body ornamentation is becoming more and more popular, especially among young people. Aims: To establish the sociodemographic characteristics of people with tattoos or body piercing and to analyze the motivations for body ornamentation. Methods: The questionnaire studies were undertaken in Lodz — one of the largest cities in Poland. The data was collected from a group of 968 people, 476 of whom had a piercing and 492 a permanent tattoo…
Frequency of under- and overweight among children and adolescents during the economic transition in Poland
Effects of psychological stress on skin and hair pigmentation in Polish adolescents
The effects of psychological stress, gender and age on hair and skin pigmentation levels were evaluated in the reported study. The material included Polish high-school and university students aged 18–22 (in the age range 17.50–22.49). All subjects who had sunbathed or used tanning beds or lamps, skin tanning agents, tanning extenders and/or medical agents affecting skin pigmentation during the 60 days preceding the beginning of the study were exc…
Biometric Characteristics of the Pelvis in Female-to-Male Transsexuals
Is increased constitutive skin and hair pigmentation an early sign of puberty?
Self-assessment of attractiveness of persons with body decoration
Second to fourth digits ratio (2D
This aims of this research are to determine if the 2D:4D digit ratio is related to subjective pain experience during tattooing and to examine gender differences therein. The study involved 43 male and 28 female Polish adults recruited from two tattoo salons in Wroclaw and Leszno in Western Poland. These subjects were asked if they felt pain during their tattooing and answers were recorded as ‘Yes’ or ‘No’. The ventral surface lengths of the secon…
Association of FTO gene with obesity in Polish schoolchildren
The goal of the study was verification of fat mass and obesity-associated (FTO) gene polymorphisms as significant risk factors of obesity in the population of Polish children. Body mass index (BMI) and DNA were evaluated, where DNA was extracted from saliva, collected from 213 children at the age of 6–13 years. DNA was genotyped by PCR (polymerase chain reaction) and HRM (high resolution melting) techniques, as well as by direct sequencing. Three…
Prenatal factors associated with the neonatal line thickness in human deciduous incisors
Relationship between pre-natal factors, the perinatal environment, motor development in the first year of life and the timing of first deciduous tooth emergence
An earlier onset of tooth emergence in children exposed to maternal smoking during pregnancy seems to provide further evidence for disturbed foetal development in a smoke-induced hypoxic environment
Parental smoking during pregnancy shortens offspring's legs
Selected gene polymorphisms effect on skin and hair pigmentation in Polish children at the prepubertal age
).
Association of FTO and TMEM18 polymorphisms with overweight and obesity in the population of Polish children
The objective of the study was to verify whether or not FTO rs9939609, rs9926289 and TMEM18 rs4854344, rs6548238, rs2867125 variants are important risk factors for overweight and/or obesity in Polish children aged 6-16 (n=283). FTO rs 9939609 and rs9926289 exhibited a strong codominant obesity-predisposing effect of genotypes homozygous for minor alleles (OR=5.42, 95% CI: 2.04-14.39, p=0.0006). The important finding of the study is increased risk…
Association of five SNPs with human hair colour in the Polish population
Further Evidence of an Association Between Low Second-to-Fourth Digit Ratio (2d
Males and females differ in their preference for occupations and sporting activities, and differ also in risk-taking attitudes. In addition to other explanations, prenatal hormone exposure has been implicated in these gender-associated differences. The ratio of the relative lengths of the second-to-fourth digits (2D:4D) is a proxy indicator of prenatal exposure to testosterone relative to oestrogen. The 2D:4D ratio has been found to be associated…
Do skin and hair pigmentation in prepubertal and early pubertal stages correlate with 2D
OBJECTIVES: In most human populations women are less pigmented than men. However, before puberty, boys tend to have lighter skin than girls. Previous research has shown that skin pigmentation in European women is negatively correlated with digit ratio (2D:4D). Therefore, it has been hypothesized that skin pigmentation in females is partially controlled by prenatal hormones. The aim of this study was to examine the correlation between 2D:4D and pi…
Familial factors more importantly modify the age of achieving motor developmental milestones than duration of breastfeeding amongst Polish children
0.6568) in studied group of children. The results showed that parental age and education may affect the offspring's gross motor development, though effect sizes are small and directions of influence vary between fathers and mothers. The study underlines the importance of familial factors over the breastfeeding duration impact on time of developmental milestones.
Odontological analysis of Polish children with unilateral cleft lip and palate
Tooth size, being the effect of interaction of genetic and prenatal factors, could be of importance in interpreting the multifactor causes of cleft lip/palate. Publications indicating decreased tooth parameters, no dental differences, or larger dimensions of teeth in cleft lip/palate patients. Researchers report mostly mesiodistal (MD) measurements of maxillary (affected) teeth. There is a lack of data for buccolingual (BL) diameters. Both MD and…
The association between socioeconomic status, duration of breastfeeding, parental age and birth parameters with BMI, body fat and muscle mass among prepubertal children in Poland
Body composition can be linked with the duration of breastfeeding, SES, parental age, birth weight and birth length.
Association of saliva 25(OH)D concentration with body composition and proportion among pre‐pubertal and pubertal Polish children
OBJECTIVES: Due to increasing problems with obesity and vitamin D deficiency among children, studies that tackle both problems together are needed. METHODS: Data were collected from 182 randomly selected children aged 6-13 years in primary schools in central Poland. Measures included anthropometric dimensions, body composition, questionnaires completed by participants' parents, and saliva samples. The level of 25(OH)D was assessed from the saliva…
The age difference in 2D
In this study a widely debated association between 2D:4D digit ratio and age was investigated. The study material included 960 individuals (530 females and 430 males) from Central Poland aged between 6-79 years. The information about age was obtained via survey filled in by study participants or, if underaged, their parents. The direct measurements of the second and fourth finger were performed to assess the 2D:4D digit ratio. The 2D:4D digit rat…
Potential Predictor of Epigenetic Age Acceleration in Men
OBJECTIVES: Second to fourth digit ratio is widely known indicator of prenatal sex hormones proportion. Higher prenatal androgenization results in longer fourth finger and lower 2D:4D index. The aim of this study was to determine whether the 2D:4D digit ratio is associated with DNA methylation (DNAm) age dependently on sex. MATERIAL AND METHODS: The study included 182 adults (106 females and 76 males) with a mean age of 51.5 ± 13 years. The inves…
Validation of candidate SNPs and CpGs for human face prediction
Background: Human facial genetics remains challenging due to the complexity of facial morphology, its highly polygenic basis, and the combined influence of genetics, environment, age, and lifestyle on facial appearance. Objective: To develop predictors of human facial appearance that could aid facial reconstruction in forensic anthropology and predict facial appearance using DNA-based methods alone. Subjects and methods: Data from ~800 individual…
Are facial indicators good markers of sexual dimorphic differences?
Background: Facial indices are commonly used to assess facial masculinization and feminization and are thought to reflect sexually selected traits linked to physiological, behavioural, and psychological characteristics. However, evidence for consistent sex differences remains inconclusive. Objective: To examine sexual dimorphism in facial indices commonly used to quantify facial masculinization and feminization in a contemporary Polish population…
Medicine (19 works) · Biology (11 works) · Demography (11 works) · Psychology (8 works) · Population (7 works) · Sexual Differentiation and Disorders (7 works) · Body mass index (5 works) · Environmental health (5 works) · Gene (5 works) · Skin Protection and Aging (5 works)