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141.
Mitochondrial DNA (mtDNA) restriction polymorphism was examined in Turkmens, Eastern Iranians, and Ukrainians. The gene pools of all populations studied were characterized by the presence of European mtDNA lineages. Mongoloid component observed in Turkmen and Iranian populations with the frequencies of about 20% was represented by groups C, D, and E/G in Turkmens, and by M*, D, A, and B in Iranians. The relative positions of the populations studied, of populations from the Caucasus, Western Iran, and Russian populations from the Krasnodar krai and Belgorod oblast in the space of principal components revealed a geographically specific pattern of the population clustering. The data on mtDNA polymorphism indicated pronounced differentiation of Eastern and Western Iranians. The latter were characterized by a mtDNA group composition similar to that in Eastern Slavs. The historical role of the Caspian populations in the formation of the population of Southeastern Europe is discussed. 相似文献
142.
Derenko MV Maliarchuk BA Denisova GA Dambueva IK Kakpakov VT Dorzhu ChM Luzina FA Lotosh EA Ondar UN Kaplina MI Zakharov IA 《Genetika》2002,38(10):1409-1416
Using the data on mitochondrial DNA (mtDNA) polymorphism, genetic structures of the ethnic groups inhabiting South and East Siberia, including Altaians, Buryats, Tuvinians, Todjins, Tofalars, Yakuts, and Evenks were described. Mitochondrial gene pools of the populations examined were characterized by different ratios between Mongoloid (M*, C, D, E/G, G, A, B, and F) and Caucasoid (H, HV, I, J, K, T, U, and X) mtDNA lineages. All the populations studied carried a marked Mongoloid component, maximum frequency of which was observed in Evenks (92.4%) and Buryats (90.1%). Maximum frequencies of Caucasoid mtDNA lineages were detected in Tofalars (20.7%) and Yakuts (14.5%). Statistically significant interpopulation differences regarding the frequencies of mtDNA haplogroups were observed between all populations examined, excluding the pairs of Evenks-Yakuts, Evenks-Tuvinians, and Tuvinians-Todjins. Differentiation of the ethnic groups inhabiting South and East Siberia, as well as Central and Middle Asia, is discussed based on genetic, linguistic, and anthropological data. 相似文献
143.
Portnoĭ LM Kazantseva IA Stashuk GA Gaganov LE Denisova LB Nefedova VO Legostaeva TB Iaurova NV 《Vestnik rentgenologii i radiologii》2000,(6):19-29
By using the principles of wide comparisons of the data of radiation diagnosis (routine X-ray study, ultrasonography (USG), CT, MRI) with the morphological findings of resected gastric specimens from patients with endophytic gastric cancer (EGC) (n = 85), the authors propose some points in the problem associated with its diagnosis. They believe that by taking into account the fact that there is an obvious growth of endophytic parietally growing gastric cancer with the concurrent reduction in its intestinal forms, it is necessary to restore current radiation to its leading place, along with endoscopy, in detecting the cancer. The authors makes a highly positive assessment of USG, CT, MRI in addition to routine X-ray study and endoscopy particularly in those cases when difficulties emerge in histological verification of the existing signs of parietally growing cancer. The paper makes indications for USG, CT, MRI concrete. The authors also show how to stage gastric cancer. 相似文献
144.
Derenko MV Maliarchuk BA Wozniak M Denisova GA Dambueva IK Dorzhu CM Grzybowski T Zakharov IA 《Genetika》2007,43(3):422-426
Data on the variation of 12 microsatellite loci of Y-chromosome haplogroup C3 were used to screen lineages included in the cluster of Genghis Khan's descendants in 18 northern Eurasian populations (Altaian Kazakhs, Altaians-Kizhi, Teleuts, Khakassians, Shorians, Tyvans, Todjins, Tofalars, Sojots, Buryats, Khamnigans, Evenks, Mongols, Kalmyks, Tajiks, Kurds, Persians, and Russians; the total sample size was 1437 people). The highest frequency of haplotypes from the cluster of the Genghis Khan's descendants was found in Mongols (34.8%). In Russia, this cluster was found in Altaian Kazakhs (8.3%), Altaians (3.4%), Buryats (2.3%), Tyvans (1.9%), and Kalmyks (1.7%). 相似文献
145.
Phylogeographic analysis of mitochondrial DNA in northern Asian populations 总被引:3,自引:1,他引:2
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Derenko M Malyarchuk B Grzybowski T Denisova G Dambueva I Perkova M Dorzhu C Luzina F Lee HK Vanecek T Villems R Zakharov I 《American journal of human genetics》2007,81(5):1025-1041
To elucidate the human colonization process of northern Asia and human dispersals to the Americas, a diverse subset of 71 mitochondrial DNA (mtDNA) lineages was chosen for complete genome sequencing from the collection of 1,432 control-region sequences sampled from 18 autochthonous populations of northern, central, eastern, and southwestern Asia. On the basis of complete mtDNA sequencing, we have revised the classification of haplogroups A, D2, G1, M7, and I; identified six new subhaplogroups (I4, N1e, G1c, M7d, M7e, and J1b2a); and fully characterized haplogroups N1a and G1b, which were previously described only by the first hypervariable segment (HVS1) sequencing and coding-region restriction-fragment-length polymorphism analysis. Our findings indicate that the southern Siberian mtDNA pool harbors several lineages associated with the Late Upper Paleolithic and/or early Neolithic dispersals from both eastern Asia and southwestern Asia/southern Caucasus. Moreover, the phylogeography of the D2 lineages suggests that southern Siberia is likely to be a geographical source for the last postglacial maximum spread of this subhaplogroup to northern Siberia and that the expansion of the D2b branch occurred in Beringia ~7,000 years ago. In general, a detailed analysis of mtDNA gene pools of northern Asians provides the additional evidence to rule out the existence of a northern Asian route for the initial human colonization of Asia. 相似文献
146.
147.
ERRATUM: Macho GA and Spears IR. 1999. Effects of Loading on the Biomechanical Behavior of Molars of Homo, Pan, and Pongo. Am J Phys Anthropol 109:211–227. The correct title of the article is given above. The word “biochemical” should be read as “biomechanical.” 相似文献
148.
149.
Bel'kova N. L. Parfenova V. V. Kostornova T. Ya. Denisova L. Ya. Zaichikov E. F. 《Microbiology》2003,72(2):203-213
An investigation of the microbial community of Lake Baikal by the methods of general and molecular microbiology showed that culturable bacterial strains are represented by various known genera. The lake water contains a great number of bacterial morphotypes, as revealed by electron microscopy, and a great diversity of nonculturable microorganisms belonging to different phylogenetic groups, as revealed by 16S rRNA gene fragment sequencing. The inference is made that the microbial community of Lake Baikal contains not only known species but also new bacterial species that are possibly endemic to the lake. 相似文献
150.