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  • 1
    ISSN: 1432-0428
    Keywords: Rat ; islet cell surface antigen ; immunobeads ; patch and cap formation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Antigens on the rat pancreatic islet cell surface were redistributed into patch and cap formation when the cells were incubated in the presence of the phosphodiesterase inhibitor, 3-isobutyl-1-methylxanthine, in tissue culture medium 199 for 24 h, before addition of rat pancreatic islet cell surface antibody. In contrast, if the cells were cultured in tissue culture medium 199 supplemented with glucose (5.5 or 16.7mmol/l) and 10% heat-inactivated fetal calf serum without 3-isobutyl-1-methylxanthine, cap formation was not detectable. These results suggest that mobile antigen on the surface of pancreatic B cells can be induced to aggregate into patch and cap formations during conditions of increased cellular metabolism.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-5233
    Keywords: Maturity-onset diabetes of the young (MODY) ; Genetics ; Diabetes mellitus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Genetic linkage studies of families with earlyonset type 2 diabetes have facilitated the identification of diabetes-susceptibility genes. In order to assess the feasibility of using linkage approaches to identify genes responsible for the development of type 2 diabetes in Japanese subjects, we examined our clinical records for multigenerational families suitable for genetic studies. We identified 16 families in which at least one subject was diagnosed with type 2 diabetes before 25 years of age. Seven of these families had a pattern of inheritance consistent with a diagnosis of maturity-onset diabetes of the young (MODY) and nine families showed a complex pattern of inheritance of type 2 diabetes with transmission of diabetes-susceptibility genes from both parents. The glucokinase and mitochondrial tRNALeu(UUR) genes were screened for mutations in at least one affected subject from each family in order to assess the contribution of mutations in these genes to the development of the diabetes. No mutations were found, which suggests that the diabetes in these families resulted from mutations in other genes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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