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V Stolc

Publications and source records attributed to V Stolc.

At least 37 records · Page 2Linked to original sources
PubMed1983

Linkage and polymorphism of a gene controlling lactate dehydrogenase in the rat.

The amount of lactate dehydrogenase subunit A in rat serum is under the control of the lactate dehydrogenase regulatory gene Ldr-1, and it is determined by two alleles, Ldr-1a (high) and Ldr-1b (low). Sex and LDH-A level segregate independently, so the Ldr-1 gene is autosomal. The genes for albino, red eye, hemoglobin, and Ldr-1 are linked (linkage group I), and their order is Ldr-1-Hbb-r-c. Our data put Ldr-1 45 cM from Hbb, and Hbb is 7 cM from c. Data in the literature separate r and c by 0.3 cM.

Alleles↗
PubMed1982

Stimulation of adenosine 3',5'-monophosphate formation in mononuclear leukocytes by toad venoms.

The content of adenosine 3',5'-monophosphate in human mononuclear leukocytes was enhanced 3-5-times by venoms obtained from African toad (Bufo africanus), American toad (Bufo americanus), Colorado river toad (Bufo arenarum) and Marine toad (Bufo marinus) at 25 micrograms/ml for 5 min of incubation at 37 degrees C. The maximum stimulation was observed after 1-5 min of incubation. The half-maximal stimulation was observed at 0.1 micrograms/ml venom obtained from Colorado river toad (Bufo arenarum). The increased content of adenosine 3',5'-monophosphate in the mononuclear leukocytes persisted without significant change for at least 30 min of incubation at 37 degrees C.

1-Methyl-3-isobutylxanthine↗
PubMed1982

Inhibitory effect of short-chain aliphatic acids on deoxythymidine incorporation into DNA in mitogen-stimulated and leukemic lymphocytes.

The effect of short-chain aliphatic acids on [3H]deoxythymidine incorporation into DNA was studied in human mitogen-stimulated lymphocytes. Butyric acid at 1-2 mM level was strongly inhibitory; however, its hydroxy or amino derivatives were ineffective. Valeric and propionic acids were less inhibitory. Formic, acetic, and hexanoic acids did not have any inhibitory effect. The effect of butyrate persisted in washed lymphocytes for 24-48 hr depending on the concentration used and the time of its addition into the incubation medium. The inhibitory effects of butyrate, valerate, and propionate on deoxythymidine and amino acid incorporation into DNA and protein were also found in human leukocytes in myelocytic and lymphocytic leukemias.

Acetates↗
PubMed1982

Hemoglobin polymorphism in inbred strains of rats (Rattus norvegicus).

Hemoglobin phenotypes A and B were determined by polyacrylamide gel electrophoresis of erythrocyte lysates from 29 inbred strains of rats. Fourteen strains have phenotype A and fifteen have phenotype B, which are characterized by five and six hemoglobin bands, respectively. Breeding studies showed that the phenotypes are codominant and that they segregate in a simple Mendelian fashion in the (A x B) F1 x A backcross. Sex and hemoglobin phenotype assort independently, and the hemoglobin phenotype is not linked to the major histocompatibility complex (RT1) and to two erythrocyte alloantigenic systems (RT2 and RT3).

Animals↗
PubMed1982

The effect of hemoglobin F upon glycosylated hemoglobin determinations.

Glycosylated hemoglobin (Hgb A1) determinations have been advocated for monitoring the control of diabetes mellitus. The prevalent method today for measuring Hgb A1 for most clinical laboratories has been a "mini-column" utilizing ion exchange chromatography. It has been stated that hemoglobin F (Hgb F) will elute with Hgb A1 and interfere with Hb A1 determinations. This study was designed to determine the quantitative effects of Hgb F upon Hgb A1 determinations. Thirty per cent of the study group had elevated Hgb A1 levels at 2% Hgb F concentration, 66% at 3% Hgb F concentration, and all individuals had elevated Hgb A1 levels at Hgb F concentrations of 4% or greater. The relationship of Hgb F to Hgb A1 concentration was not a simple identity, but could be represented by the equation y = 6.03 + 1.24x. If the ion exchange chromatography methodology is used, Hgb F levels should be determined whenever Hgb A1 levels are elevated, particularly in populations where increased Hgb F levels also might be encountered. The authors determined Hgb F levels whenever the concentration of Hgb A1 was 10% or greater. In their population, they found that approximately 1.5% of samples with elevated Hgb A1 concentrations had increased (greater than 2%) Hgb F levels.

Chromatography↗
PubMed1982

Polymorphism of serum acid phosphatase in the rat.

Polymorphism of serum acid phosphatase was detected by electrofocusing in acrylamide gel. The locus has two alleles Apsa and Apsb that segregated in the backcross progeny (A x B) F1 x B in a 1:1 ratio. The phenotype APS-A is dominant in the F1 generation. The gene for serum acid phosphatase segregated independently of the major histocompatibility complex and of the sex of the rats.

Acid Phosphatase↗
PubMed1982

Orientation of loci in the major histocompatibility complex of the rat and its comparison to man and the mouse.

Among 290 F2 progeny of an r10 X ACP cross were two recombinants which allowed the loci for glyoxalase-1 and neuraminidase-1 to be mapped relative to the RT1.A and dw-3 loci in the major histocompatibility complex (MHC) of the rat. In 673 progeny of the same cross there was a recombinant between ft and dw-3, and in 403 progeny of the backcross BY1 X (BY1 X BDIX)F1 there was another recombinant between ft and dw-3. These data, combined with those from previous studies, provide the information for constructing a detailed map of the rat major histocompatibility complex: the gene order and size in the rat are very similar to those in the mouse and different from those in man and in the other species that have been studied. Comparison of the structures of the MHC in the various species leads to a hypothesis about the evolution of the MHC which involves sequential duplications of the genes coding for class I and class II loci and an inversion in the prototypic muridae which placed the class II loci between the class I loci.

Animals↗
PubMed1980

Serum ferritin and bone marrow biopsy iron stores. II. Correlation with low serum iron and Fe/TIBC ratio less than 15%.

Diseases associated with defective reticuloendothelial release of iron may be difficult to distinguish from the iron-deficient state, since serum iron parameters (serum iron, percentage saturation of transferrin less then 15%) may overlap. Assessment of the bone marrow biopsy iron stores was often necessary to resolve the diagnosis. Serum ferritin levels have proved very useful in distinguishing the uncomplicated iron-deficient state from other disorders associated with low serum iron and low percentage saturation of transferrin. However, a small percentage of iron-deficient persons may have normal ferritin values, particularly if these persons have liver disease or hematopoietic or lymphoreticular neoplasms. In these cases, assessment of the bone marrow biopsy iron would still be necessary to evaluate the body iron stores.

Bone Marrow↗