Biomedical subjects
Publications and source records attributed to G Flatz.
In four population groups of Afghanistan, the Pushtu, Tajik, Hazara, and Usbek, the red cell enzymes EsD, GPT, AcP, PGM1, ADA, AK, and 6PGD were studied. Significant differences in frequency occurred between the Hazara and others in 6PGD, PGM1, and AK system, and between the Pushtu and others in the ADA system.
Studies of the acetylator polymorphism in Pushtoons, Tajiks, Hazaras and Usbeks living in Afghanistan revealed a lower frequency of the allele ACS in the last two populations. The results were compared with those of other populations. The importance of this polymorphism for therapy and a possible relation to the use of alkaloids in form of spices and drugs is discussed.
Gene frequencies of the serum proteins third component of complement (C3) transferrin (Tf), haptoglobin (Hp), group specific component (Gc), serum cholinesterase (E1), alpha1-antitrypsin (Pi), beta2-glycoprotein I (Bg), and ceruloplasmin (Cp) in the Tajiks, Pushtoons, Hazaras, and Usbeks in Afghanistan were reported. Rare variants were observed in the C3, Tf, and Pi systems.
The scope of prenatal diagnostics of hereditary diseases in early pregnancy and the cooperation of gynaecologists and human geneticists in this field are discussed.
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Two hundred and seventy apparently healthy adult subjects from Afghanistan, mainly from the central and eastern parts of the country, were subjected to a lactose tolerance test. The change of blood glucose from the fasting concentration at 20 min after the administration of lactose showed a bimodal distribution. Forty-seven subjects had a rise of blood glucose concentration of more than 1.1 mmol/l and were classified as persistence of high intestinal lactase activity (PHILA), a term which lays emphasis on the fact that high lactase activity in the adult is an unusual state whose prevalence in some populations requires explanation. In the Afghan sample there were no significant differences of the frequency of PHILA in different ethnic groups.
The C3 phenotype distribution was studied in 4 different populations from Afghanistan. The gene frequencies of C3S allele were: Tajiks (0,8547), Pushtoons (0.8812), Hazaras (0.9036) and Osbeks (0.8530). These values were significantly higher than in European populations studied previously. No significant differences were found between the mean serum levels of C3, C4 and C3-proactivator among 4 population groups. A higher concentration of IgG, IgA and IgM was observed in Afghanistan sera than reported for Europeans.
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