35 research outputs found
X-Chromosomal short tandem repeat loci in the Turkish population
In this study, we aimed to demonstrate the importance and utility of polymorphic short tandem repeat (STR) found on the human X chromosome and to provide the first allelic frequency data of X-STR (X chromosomal) loci in the Turkish population. Blood samples were taken from unrelated individuals (135 males and 129 females) from different regions of the country. Primers were designed according to gene bank data (www.gdb.org) and synthesised by the Köln Blutgruppen Institute. The primers amplified the following loci on the X chromosome: DXS8377, DXS101, DXS6789, STRX-1 and HUMHPRTB. Our data showed that two loci, DXS8377 and DX101, had the highest number of alleles (18) and the polymorphism information content (PIC) values of these loci were 0.9 and 0.87, respectively and were higher than those of other loci. In the other loci examined, 11 (STRX1), 10 (DXS6789) and 9 (HPRTB) alleles were detected and the PIC values of these loci were 0.78, 0.68 and 0.70, respectively. The highest (0.899) and lowest (0.674) rate of heterozygosity was found in the DXS8377 and HPRTB loci, respectively. In all loci, the power of discrimination for female (PDF) values were higher than the power of discrimination for male (PDM) values. The locus with the highest PDF value was DXS8377 (0.9841). The mean exclusion change (MEC) value of this locus also proved to be the highest for both fathermother- child and father-child. The locus with the lowest MEC value was DXS6789. To use calculations of probabilities of genetic results for forensic purposes, allelic frequencies in individuals in the community should be determined. Our study provides the first data from the Turkish population.Key words: X chromosomal (X-STR), forensic genetics, forensic sciences, DNA, kinship testing, paternity
16th IHIW: Immunogenetics of Aging
Ageing is a process characterised by progressive loss of
function in multiple different organ systems, such as
the nervous, endocrine and immune systems. Current
data showing that ageing processes may be associated
with alterations in the immune system suggest that
some of the genetic determinants of senescence might
be polymorphic genes that regulate immune responses.
The ‘Immunogenetics of Aging’ programme was a
component introduced in the 14th International HLA
and Immunogenetics Workshop (IHIWS) and developed
further within the 15th and 16th. The aim of this
component was to determine the contribution of
immune genes to successful ageing and an increased
capacity to reach the extreme limits of lifespan. Within
the 16th IHIWS, new populations were included, and
the number of samples analysed was increased. Analysis
was focused on innate immunity genes (KIR and
MBL2) and their correlation with CMV serostatus.
Collaborative studies suggested that both activating
and inhibitory KIR and functionally relevant MBL2
haplotypes are important factors for control of CMV
infection in the elderly and therefore for chronic
low-grade inflammation. Results showed that these
genes might be predictive biomarkers in ageing and longevity. Prevalence of MBL2 haplotypes determining
absence of the protein (LYPB, LYQC and HYPD) was
observed in elderly people with a higher CMV antibody
titre. The high CMV titre was also associated
with a decreased frequency of the activatory KIR2DS5
and A1B10 haplotypes in elderly. Due to the role of
KIR and low or deficient MBL haplotypes in viral
infections, these genetic markers could be considered
as indicators of a need for CMV prophylaxis at younger
age and therefore increased probability of longer
lifespan
A preliminary association study in Turkish population: Do IL-17 and UCP2 Gene variants Contributes to The Ethiology of Microtia?
The impact of HLA-C and KIR genes in allogeneic hematopoietic stem cell transplantation.
The impact of human leucocyte antigens in graft-versus-host disease and survival after haematopoietic stem cell transplantation in patients with leukaemia
The effect of air pollution and meteorological parameters on chronic obstructive pulmonary disease at an Istanbul hospital
In this study, the relation between emergency admissions for chronic obstructive pulmonary disease (COPD) at an Istanbul University Hospital between the years 1997 and 2001 and the meteorological and air pollution parameters has been analysed. Admissions were calculated for each month, and the relations between the number of admissions for each month and the corresponding month's meteorological parameters (pressure, temperature, moisture) and the average pollution values (CO, SO2, NO, NO2, PM10) were determined. There were 1586 patients included in this study. COPD admissions had a negative significant correlation with temperature (r = -0.72, p < 0.001), a positive significant correlation with pressure (r = 0.41, p = 0.001) and humidity (r = 0.34, p = 0.007), and also had a positive significant correlation with SO2 (r = 0.64, p < 0.001), NO (r = 0.40, p = 0.002), CO (r = 0.57, p < 0.001) and PM10 (r = 0.27, p = 0.03). No significant relationship was found for NO2. When the meteorological and clinical parameters were evaluated, it was found that the only variable related to the COPD admissions was temperature. These results for COPD admissions were found to be considerably higher in seasons other than summer (p < 0.001). When summer seasonal values were taken as reference (RR = 1), RR = 1.24 (95% CI: 1.049-1.475) for autumn, RR = 1.86 (95% CI: 1.541-2.115) for spring and RR = 2.08 (95% CI: 1.793-2.434) for winter. Air pollution and meteorological parameters should be seen as a widespread public health problem, which can trigger admission and even death due to COPD