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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 38 (1995), S. 1249-1250 
    ISSN: 1432-0428
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0428
    Keywords: Glucagon receptor gene ; susceptibility ; missense mutation ; non-insulin-dependent diabetes mellitus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A possible pathogenic mutation in the glucagon receptor gene causing a Gly to Ser change at codon 40 (Gly40Ser) was reported to be associated and linked with non-insulin-dependent diabetes mellitus (NIDDM), in France and Sardinia, Since the frequency of the mutation (Gly40Ser), about 5% in the French population of familial NIDDM and 8% in randomly chosen diabetic patients in Sardinia, was much higher than that of any of the previously reported mutations in candidate genes, it is important to clarify whether the contribution of this mutation to NIDDM is universal. In this study, we investigated the association of this mutation with diabetes mellitus in a large number of Japanese diabetic patients (383 NIDDM and 53 insulin-dependent diabetic patients) by polymerase chain reaction-restriction fragment length polymorphism analysis. None of the Japanese diabetic patients showed Gly40Ser mutation and the association of this mutation with NIDDM was significantly different (p〈4·10−5 vs French, p〈3·10−6 vs Sardinian by Fisher's exact test). The results not only indicate that the mutation plays little, if any, role in susceptibility to diabetes in Japan, but also indicate the genetic heterogeneity in NIDDM and further emphasize the importance of studies on genetic susceptibility to NIDDM and other complex traits in different ethnic groups.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0428
    Keywords: Key words Glucagon receptor gene ; susceptibility ; missense mutation ; non-insulin-dependent diabetes mellitus.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A possible pathogenic mutation in the glucagon receptor gene causing a Gly to Ser change at codon 40 (Gly40Ser) was reported to be associated and linked with non-insulin-dependent diabetes mellitus (NIDDM), in France and Sardinia. Since the frequency of the mutation (Gly40Ser), about 5 % in the French population of familial NIDDM and 8 % in randomly chosen diabetic patients in Sardinia, was much higher than that of any of the previously reported mutations in candidate genes, it is important to clarify whether the contribution of this mutation to NIDDM is universal. In this study, we investigated the association of this mutation with diabetes mellitus in a large number of Japanese diabetic patients (383 NIDDM and 53 insulin-dependent diabetic patients) by polymerase chain reaction-restriction fragment length polymorphism analysis. None of the Japanese diabetic patients showed Gly40Ser mutation and the association of this mutation with NIDDM was significantly different (p 〈 4 · 10−5 vs French, p 〈 3 · 10−6 vs Sardinian by Fisher's exact test). The results not only indicate that the mutation plays little, if any, role in susceptibility to diabetes in Japan, but also indicate the genetic heterogeneity in NIDDM and further emphasize the importance of studies on genetic susceptibility to NIDDM and other complex traits in different ethnic groups. [Diabetologia (1995) 38: 983–985]
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0428
    Keywords: KeywordsOB gene ; microsatellite ; genetics ; obesity ; diabetes mellitus.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The mouse ob gene and its human homologue OB have recently been cloned. The mutations in the ob gene are known to be associated with extreme obesity. The relationship between the human OB gene and disease, however, is largely unknown due to the lack of suitable markers within or adjacent to the OB gene. To obtain informative markers, we searched for simple tandem repeat polymorphisms in the genomic sequence of the human OB gene and identified a novel tetranucleotide repeat in the 3′ flanking region. Fifteen alleles were detected in this marker with a heterozygosity of 0.85 and polymorphism information content of 0.83, indicating a highly informative nature of this marker. Two-point linkage mapping in two Centre Etude Polymorphisme Humaine (CEPH) reference families suggested that this marker is located in the interval between D7S514 and D7S530, the same interval where the OB gene is located (recombination fractions with D7S514 and D7S530 were 0.026 and 0.034, respectively). Although allele frequency distributions of this marker did not differ between 84 control subjects and 69 NIDDM patients, there was a tendency to higher body weight in control subjects with class I/class I genotype than in those without this genotype (68.8 ± 11.1 vs 60.8 ± 10.3 kg, p = 0.05). The highly polymorphic nature of this marker and its location in the OB gene makes this marker useful for linkage studies of the OB gene with a number of phenotypes, such as obesity, non-insulin-dependent diabetes mellitus, hypertension and the insulin resistance syndrome. [Diabetologia (1996) 36: 1398–1401]
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0428
    Keywords: Β3-adrenergic-receptor gene ; susceptibility ; missense mutation ; non-insulin-dependent diabetes mellitus ; insulin resistance syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A possible pathogenic mutation in the Β3-adrenergic-receptor gene (Trp64Arg) has been reported to be associated with an earlier age of onset of non-insulin-dependent diabetes mellitus (NIDDM) and clinical features of the insulin resistance syndrome in Pima Indian, Finnish and French subjects. Since marked heterogeneity has been reported in the association of mutations of candidate genes with NIDDM between Japanese and other ethnic groups, we investigated the association of Trp64Arg with NIDDM in Japanese subjects. The allele frequency of the mutation (Arg) was slightly, but not significantly, higher in NIDDM than in control subjects (70 out of 342 alleles [20.5%] vs 40 out of 248 [16.1%], respectively, p〉0.2). When our data were combined with those of Pima Indian and Finnish subjects, however, the Arg/Arg genotype was significantly associated with NIDDM as compared with the other two genotypes (p〈0.005, relative risk [RR] 2.13, 95% confidence interval [CI] 1.28–3.55). The Arg allele was also associated with NIDDM (p〈0.05, RR 1.27, 95% CI 1.06–1.52). Japanese subjects homozygous for the mutation had a significantly higher body mass index (mean ± SD∶25.5±3.9 kg/ m2) than heterozygotes (22.6±4.1, p〈0.05) and normal homozygotes (22.8±3.8, p〈0.05). NIDDM patients homozygous for the mutation tended to have an earlier age of onset of NIDDM than those with other genotypes. These data suggest that the Trp64Arg mutation not only contributes to weight gain and age-at-onset of NIDDM but is also associated with susceptibility to NIDDM.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0428
    Keywords: Keywords Angiotensin I-converting enzyme gene ; I/D polymorphism ; meta-analysis ; diabetic nephropathy ; diabetic retinopathy ; genetic susceptibility.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An insertion/deletion (I/D) polymorphism in the angiotensin-converting enzyme (ACE) gene has repeatedly been shown to be associated with ischaemic heart disease, but the association of this genetic marker with diabetic microangiopathy is controversial. To assess the association of the genotypes with the development of diabetic nephropathy or retinopathy, we performed a meta-analysis of data from the literature, using Mantel-Haenszel method followed by the Breslow-Day test for assessing homogeneity among data. In a total of 4773 diabetic patients from 18 studies with (n = 2495) and without (n = 2278) renal complications, the D allele was significantly associated with diabetic nephropathy (p 〈 0.0001) in a dominant model (summary odds ratio 1.32, 95 % confidence interval: 1.15 to 1.51). There was no significant evidence against homogeneity of the odds ratios (χ 2 = 18.9, 20 df; p = 0.53). The association was significant both in non-insulin-dependent (p 〈 0.005) and in insulin-dependent diabetes mellitus (p 〈 0.05). Likewise, in a total of 2010 diabetic patients with (n = 1008) and without (n = 1002) retinopathy, there was no association of the I/D polymorphism with diabetic retinopathy. These data suggest that the ACE I/D polymorphism affects the risk for diabetic nephropathy, but not for diabetic retinopathy. [Diabetologia (1998) 41: 47–53]
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-0428
    Keywords: NSY mouse ; non-insulin-dependent diabetes mellitus ; animal model ; insulin secretion ; isolated islets
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The NSY (Nagoya-Shibata-Yasuda) mouse was established as an inbred strain of mouse with spontaneous development of diabetes mellitus, by selective breeding for glucose intolerance from outbred Jcl∶ICR mice. NSY mice spontaneously develop diabetes mellitus in an age-dependent manner. The cumulative incidence of diabetes is 98% in males and 31% in females at 48 weeks of age. Neither severe obesity nor extreme hyperinsulinaemia is observed at any age in these mice. Glucose-stimulated insulin secretion was markedly impaired in NSY mice after 24 weeks of age. In contrast, fasting plasma insulin level was higher in male NSY mice than that in male C3H/He mice (545±73 vs 350±40 pmol/l, p〈0.05, at 36 weeks of age). Pancreatic insulin content was higher in male NSY mice than that in male C3H/He mice (76±8 vs 52±5 ng/mg wet weight, p〈0.05, at 36 weeks of age). Morphologically, no abnormal findings, such as hypertrophy or inflammatory changes in the pancreatic islets, were observed in NSY mice at any age. These data suggest that functional changes of insulin secretion in response to glucose from pancreatic beta cells may contribute to the development of non-insulin-dependent diabetes mellitus (NIDDM) in the NSY mouse. Although insulin sensitivity was not measured, fasting hyperinsulinaemia in NSY mice suggests that insulin resistance may also contribute to the pathogenesis of NIDDM. Since these findings are similar to the pathophysiologic features of human NIDDM patients, the NSY mouse is considered to be useful for investigating the pathogenesis and genetic predisposition to NIDDM.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 38 (1995), S. 1493-1495 
    ISSN: 1432-0428
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-0428
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 10
    ISSN: 1432-0428
    Keywords: Keywordsβ 3-adrenergic-receptor gene ; susceptibility ; missense mutation ; non-insulin-dependent diabetes mellitus ; insulin resistance syndrome.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A possible pathogenic mutation in the β 3-adrenergic-receptor gene (Trp64Arg) has been reported to be associated with an earlier age of on-set of non-insulin-dependent diabetes mellitus (NIDDM) and clinical features of the insulin resistance syndrome in Pima Indian, Finnish and French subjects. Since marked heterogeneity has been reported in the association of mutations of candidate genes with NIDDM between Japanese and other ethnic groups, we investigated the association of Trp64Arg with NIDDM in Japanese subjects. The allele frequency of the mutation (Arg) was slightly, but not significantly, higher in NIDDM than in control subjects (70 out of 342 alleles [20.5 %] vs 40 out of 248 [16.1 %], respectively, p 〉 0.2). When our data were combined with those of Pima Indian and Finnish subjects, however, the Arg/Arg genotype was significantly associated with NIDDM as compared with the other two genotypes (p 〈 0.005, relative risk [RR] 2.13, 95 % confidence interval [CI] 1.28–3.55). The Arg allele was also associated with NIDDM (p 〈 0.05, RR 1.27, 95 % CI 1.06–1.52). Japanese subjects homozygous for the mutation had a significantly higher body mass index (mean ± SD: 25.5 ± 3.9 kg/m2) than heterozygotes (22.6 ± 4.1, p 〈 0.05) and normal homozygotes (22.8 ± 3.8, p 〈 0.05). NIDDM patients homozygous for the mutation tended to have an earlier age of onset of NIDDM than those with other genotypes. These data suggest that the Trp64Arg mutation not only contributes to weight gain and age-at-onset of NIDDM but is also associated with susceptibility to NIDDM. [Diabetologia (1996) 39: 349–352]
    Type of Medium: Electronic Resource
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