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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 10 (1971), S. 1741-1745 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 46 (1979), S. 135-140 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The first case of trisomy of probable 12p mosaicism originated de novo is presented. Comparison of the clinical findings of this patient with those of previously described cases of 12p trisomy derived from translocated chromosomes indicates that the symptoms of 12p trisomy are: (1) normal birth weight and physical development, (2) severe psychomotor retardation and generalized hypotonia, (3) peculiarly round face with prominent cheeks, hypertelorism, epicanthus, broad, flat nasal bridge, short nose with anteverted nostrils, large philtrum, broad, prominent lower lip, and (4) poly(syn)dactyly of feet.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 46 (1979), S. 141-147 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary An infant with karyotype 46,XY,der(8),t(3;8)(q21;p23) is presented. The presence of trisomy 3q21→qter syndrome is suspected on the basis of comparison of the clinical and laboratory findings of this patient with those of cases that have been reported as partial 3q trisomy. The common phenotypic features of this syndrome include growth failure and mental or developmental retardation, hypotonia, persistent lanugo, distorted head, congenital glaucoma, short and upturned nose, prominent maxilla, micrognathia, short, webbed neck, short limbs, retroflexed third and fourth toes, cutaneous syndactyly of the second, third and fourth toes, and elevated galactose-1-phosphate uridyl transferase activity in the red blood cells.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary We describe a genetic polymorphism of human lymphocyte cytosol major polypeptide with mol. wt. 64,000, detected in peripheral blood lymphocytes by high resolution two-dimensional electrophoresis. Three different electrophoretic types (1-1, 2-1, 2-2) of the polypeptide have been identified. Family and population studies indicate that the three phenotypes of the polypeptide are determined by two common alleles at a single autosomal locus. The polypeptide occurs in the cytosol and is predominent in peripheral blood lymphocytes, B-lymphoblastoid cells, T-lymphoblastoid cells, lymph node, and spleen. The polypeptide has not been detected in HeLa cells, fibroblasts, erythrocytes, serum, and cerebrum. Traces of the polypeptide exist in liver, kidney, and skeletal muscle. It is proposed that the polypeptide and its locus be temporarily designated lymphocyte cytosol 64K polypeptide (LC64K polypeptide) andLC64P, respectively. In a Japanese population, the gene frequencies ofLC64P 1 andLC64P 2 were 0.936 and 0.064, respectively. The data suggest thatLC64P is a new locus, product of which shows genetic polymorphism and is associated with the function and/or the structure of lymphocytes.
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  • 5
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary We describe a genetic polymorphism of a human cellular polypeptide with mol. wt. 100,000, detected in peripheral blood lymphocytes by high resolution two-dimensional electrophoresis. Three different electrophoretic types (1-1, 2-1, and 2-2) of the polypeptide have been identified. Family and population studies indicate that the three phenotypes of the polypeptide are determined by two common alleles at a single autosomal locus. The polypeptide occurs in the cytosol and is one of the abundant polypeptides of B-lymphoblastoid cells, T-lymphoblastoid cells, fibroblasts, and HeLa cells. The data indicate that the cytosol polypeptide with mol.wt. 100,000 shows a genetic polymorphism determined by aew autosomal locus. It is proposed that the polypeptide and its locus be temporarily designated cytosol 100k polypeptide (C100k polypeptide) and C100P, respectively. In a Japanese population, the gene frequencies of C100P 1 and C100P 2 were 0.907 and 0.093, respectively.
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  • 6
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The 100 or so most intensely Coomassie blue-stained polypeptides from PHA-stimulated peripheral blood lymphocytes were analyzed by two-dimensional electrophoresis in combination with family and population studies. Besides polymorphic lymphocyte cytosol 64k polypeptide reported previously, genetic variants were frequently observed in three polypeptides with molecular weights of 100,000, 49,000, and 40,000. All of them occur in the cytosol. These variant polypeptides are charge variants, because they are separated in the isoelectric focusing dimension. It is indicated by family and population studies and cell distribution analysis that the polypeptide with a molecular weight of 100,000 shows a genetic polymorphism determined by two alleles at a new autosomal locus, as described in the following paper. Family and population studies also suggest that a genetic polymorphism defined by alleles at an autosomal locus is present in each of the polypeptides with molecular weights of 49,000 and 40,000. In contrast to the previous reports of the extremely restricted genetic variability of the 100 or so most abundant fibroblast polypeptides, the present data indicate that common genetic variants are present at least in four of the 100 or so most intensely Coomassie blue-stained lymphocyte polypeptides. The result also shows that careful side-by-side comparison of two-dimensional electrophoresis patterns among both parents and their children is an effective method to detect genetic variant polypeptides.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Approximately 250 phytohemagglutinin (PHA)-stimulated peripheral blood lymphocyte polypeptides from three unrelated healthy males were compared by high-resolution two-dimensional gel electrophoresis and double-label autoradiography. Comparisons by all possible pairwise combinations of [14C]leucine-labeled proteins from an individual and [3H]leucine-labeled proteins from another revealed that only three polypeptides differed qualitatively among the three individuals. The degree of variation in lymphocyte polypeptides between different individuals was similar to that in fibroblast polypeptides reported previously. Among the three variant polypeptides, two polypeptides with mol.wt. 64,000 and mol. wt. 37,000 coexisted with a polypeptide with the same molecular weight, and they showed the behavior expected of two allelic gene products separated in the isoelectric focusing dimension by charge differences. Analysis of [14C]leucine labeled peripheral blood lymphocyte proteints, from the parents of each individual, by two-dimensional gel electrophoresis indicated that the variant polypeptides with mol. wt. 64,000 and mol. wt. 37,000 in the propositus were inherited from one of his parents. The data indicate that genetic analysis of PHA-stimulated peripheral blood lymphocyte proteins is feasible by high-resolution two-dimensional gel electrophoresis in combination with double-label autoradiography and pedigree analysis.
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  • 8
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary To assess the relationship between relatively severe hereditary hypercholesterolemia with Achilles tendon xanthomas and the defect of the low density lipoprotein (LDL) receptor gene, family studies were carried out in 17 hypercholesterolemic families. In 16 out of the 17 families, hypercholesterolemia co-segregated with four different gross rearrangements, six different restriction fragment length polymorphism (RFLP) haplotypes, or an abnormal TaqI band of the LDL receptor gene. These findings are compatible with the interpretation that hypercholesterolemia is caused by defective LDL receptor genes, and that the origin of the mutant LDL receptor genes in Japanese generally differs among different pedigrees. In the remaining family, the proband and his sibling, both having relatively severe hypercholesterolemia and Achilles tendon xanthomas, shared an RFLP haplotype, although the proband's other sibling with moderate hypercholesterolemia but without Achilles tendon xanthomas did not. The mutant gene for familial defective apolipoprotein B-100 was not detected in the 17 probands. These data suggest that most, if not all, of the relatively severe hereditary hypercholesterolemia associated with Achilles tendon xanthomas is caused by a defect of the LDL receptor gene.
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  • 10
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract To determine the frequency of fetal nucleated cells in maternal peripheral blood during different stages of pregnancy, 50 primigravidas were investigated by determining the frequency of cells with the Y chromosome using fluorescence in situ hybridization (FISH) of Y-specific repetitive sequences of the DYZ1 family. Polymerase chain reaction (PCR) amplifying the same part of the DYZ1 used as the probe in FISH and a single-copy Y-specific fragment was also carried out for genomic DNA from the same samples. Cells with the hybridization signal were detected by FISH at and after 15 weeks of pregnancy in all pregnant women who gave birth to boys. The ratio of cells with the signal to those without the signal ranged from 1 in 144,000 to 1 in 4,000 with a tendency to increase as the pregnancy advanced. The frequency of fetal cells estimated by the PCR experiments was significantly and positively correlated with that found by FISH. The present study suggests that fetal nucleated cells increase in maternal peripheral blood with advancing gestation, from less than 1 in 100,000 nucleated cells in the first trimester to around 1 in 10,000 at term. These frequencies were much lower than those reported by cytological methods.
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