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PubMedDate not supplied

Variations of the enzymatic activity of the rat's gum glycolytic cycle following administration of sweeteners.

The effects of saccharose and isomalt on the rat's gum carbohydrate metabolism have been studied through evaluation of the activity of hexokinase (HK), phosphoglucoisomerase (PGI), lactatedehydrogenase (LDH), glucose-6-phosphate-dehydrogenase (G6PD), phosphofructokinase (PFK) and phosphoglucomutase (PGM). The values obtained by administering a drink sweetened with 10% isomalt are significantly lower (p < 0.05) than those obtained in the animals that had the drink sweetened with 10% saccharose. Administration of the same amount of drinks through gastric tube showed an enzymatic activity similar to that of the rats in the control group. Intermediate metabolites of the glycidic metabolism would then be responsible for the lesions of the oral epithelium, as those obtained by administering high levels of vitamin A, through an increased synthesis of acids. The increase of HK, PFK and PK activity with respect to the control group in those rats that had the isomalt on the rat's gum glycolytic cycle enzymes was found to be lower than that detected for other polyalcohols.

Animals↗
PubMed1996

[The gene pool of native inhabitants of the Samburg tundra].

This study continues a series of investigations of the gene pool of native Siberian ethnic groups. In a population of Tundra Nentsi (Northern Samoyeds) and a group of Komi-Zyryans (Finno-Ugrian) (Samburg settlement, Tyumenskaya oblast, Yamalo-Nenetskii Autonomous okrug), gene markers of the following genetic systems were studied: blood groups (ABO, MNSs, Rhesus, Kell, Duffy, and P), erythrocyte acid phosphatase (AcP), phosphoglucomutase 1 (PGM 1), haptoglobin (Hp), and transferrin (Tf). The population of Samburg Tundra Nentsi was shown to have a close genetic relationship with the "core" of the Forest Nentsi population. In Northern Samoyeds, three carriers of the rare allele K (blood group Kell) were found for the first time. It is suggested that this allele was transferred into the population of Tundra Nentsi from Komi. Samburg Tundra Nentsi are found to have the maximum frequency of the allele PGM 1 (Posphoglucomutase 1) among aboriginal populations of northern Asia. Analysis of original data and the literature revealed a significant genetic distance between the Komi and Northern Samoyed populations. It was shown that Samburg Komi occupy an intermediate position between the clusters of Nenets populations and Finno-Ugrians (Komi) living in Komi Republic.

Alleles↗
PubMed1995

Polymorphic protein expression (profile) in numigall.

Ten protein and enzyme polymorphic systems, viz. haemoglobin, albumin, transferrin, adenosine deaminase, adenylate kinase phosphoglucomutase, esterase-D, glyoxalase, alkaline phosphatase and amylase were studied in numigall (guinea fowl x chicken hybrids) to assess structural gene expression and regulatory gene divergence between the parental species. The investigation revealed presence of both the maternal and paternal electrophoretic components in case of adenosine deaminase, alkaline phosphatase, amylase, albumin and transferrin although no clear differences could be identified for haemoglobin and glyoxalase. Esterase-D and adenylate kinase phenotypes showed a dominance of the chicken type.

Animals↗
PubMed1997

Polymorphism of conventional genetic markers and HLA system in Turkey.

This study is part of a general survey in which the regional variability of various genetic markers in Turkey will be analyzed with special regard to its application in forensic medicine. Blood samples from 3173 unrelated healthy individuals of both sexes and from different regions of Turkey have been sampled and were typed for the blood group polymorphisms AB0, MNSs, Kell, Duffy, Kidd, P, Lutheran and Lewis, for the red cell enzyme polymorphisms adenylate kinase (AK), glyoxalase (GLO), phosphoglucomutase (PGM), esterase D (ESD), red cell acid phosphatase (aP), and for the serum protein polymorphisms group specific component (vitamin D binding protein, GC) and transferrin (TF). In addition to this the HLA-A and HLA-B antigens of the major histocompatibility complex (HLA) were also typed in 973 individuals. The blood group polymorphisms were typed by the classical haemagglutination methods. Serum protein and red cell enzyme polymorphisms were determined by conventional cellulose acetate electrophoresis. HLA antigens were typed by the standard two stage microlymphocytotoxicity technique. Genetic equilibrium can be assumed for all polymorphic systems under study. The results indicate some regional differences in the distribution of allele frequencies.

Adolescent↗
PubMed1998

[Genetic analysis of the South Altaian population of the Mendur-Sokkon village, Altai Republic].

This study was a continuation of complex research on the gene pool of indigenous Siberian populations conducted at the Institute of Cytology and Genetics, Siberian Division, Russian Academy of Sciences. In the population of South Altaians from the Mendur-Sokkon village, Ust'-Kanskii raion, Altai Republic, polymorphism for the following genetic markers was studied: blood groups ABO, MNSs, Rhesus, Kell, Duffy, and P; erythrocyte acid phosphatase (AcP); phosphoglucomutase 1 (PGM1); haptoglobin (Hp); and transferrin (Tf). The genetic position of South Altaians relative to the populations of the European part of Russia, Siberia, and the Urals was estimated. It was demonstrated that the gene pool of the South Altaian population of Mendur-Sokkon possessed both Caucasoid and Mongoloid genetic characteristics, with the latter prevailing. Genetically, this population is most closely related to Mongols and Nentsis. The genetic distance between South and North Altaians was large; this agreed with earlier genetic data and confirmed anthropological and ethnographic evidence indicating that these two groups had different backgrounds and were at different stages of ethnogenesis.

Adolescent↗
PubMed1998

Hyperglycemic effect of low protein cassava diet.

Hyperglycemic effect of cassava diet in presence of varying amounts of protein has been carried out. The rats fed a low protein high cyanide diet showed an increase in the blood glucose and a decrease in the liver glycogen. The activity of glycogen phosphorylase, glucose 6-phosphatase and phosphoglucomutase showed higher levels in the liver of low protein high cyanide group compared to the control group. Also, the activity of hexokinase, and isocitrate dehydrogenase activity in the liver of high cyanide low protein were significantly low. The results suggests that cassava diet with the low protein can induce hyperglycemia.

Animals↗