Association of a functional 17beta-estradiol sensitive IL6-174G/C promoter polymorphism with early-onset type 1 diabetes in females
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Association of a functional 17beta-estradiol sensitive IL6-174G/C promoter polymorphism with early-onset type 1 diabetes in females. / Kristiansen, Ole P; Nolsøe, Runa L; Larsen, Lykke; Gjesing, Anette M P; Johannesen, Jesper; Larsen, Zenia Mee Effenberger; Lykkesfeldt, Anne E; Karlsen, Allan E; Pociot, Flemming; Mandrup-Poulsen, Thomas; DIEGG.
In: Human Molecular Genetics, Vol. 12, No. 10, 15.05.2003, p. 1101-10.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Association of a functional 17beta-estradiol sensitive IL6-174G/C promoter polymorphism with early-onset type 1 diabetes in females
AU - Kristiansen, Ole P
AU - Nolsøe, Runa L
AU - Larsen, Lykke
AU - Gjesing, Anette M P
AU - Johannesen, Jesper
AU - Larsen, Zenia Mee Effenberger
AU - Lykkesfeldt, Anne E
AU - Karlsen, Allan E
AU - Pociot, Flemming
AU - Mandrup-Poulsen, Thomas
AU - DIEGG
PY - 2003/5/15
Y1 - 2003/5/15
N2 - The type 1 diabetes mellitus (T1DM) candidate gene SNP IL6-174G/C was genotyped in 253 Danish T1DM families (1129 individuals). TDT analysis demonstrated linkage in the presence of association between the IL6-174C allele and T1DM in the 416 T1DM offspring, P(tdt)=0.04. Gender conditioned TDT analyses revealed that linkage and association with T1DM were present in females exclusively; P(tdt)=6.5 x 10(-4) and P(tdt)=2.4 x 10(-4), respectively. Random transmission of the IL6-174C/G alleles was found in T1DM males, non-T1DM males and non-T1DM females; all P(tdt)>/=0.37. Heterogeneity analyses (T1DM versus non-T1DM females) excluded preferential meiotic segregation in females, P=4.6 x 10(-3), and demonstrated differences in the transmission patterns between female and male T1DM offspring, P=5.1 x 10(-3). The IL6-174 CC genotype was associated with younger age at onset of T1DM in females (P=0.002). The impact of 17beta-estradiol (E(2)) on the IL6-174G/C variants was investigated by reporter studies. The PMA stimulated activity of the T1DM risk IL6-174C variant exceeded that of the T1DM protective IL6-174G variant by approximately 70% in the absence of E(2) (P(c)=0.004), but not with E(2) present (P(c)=0.12). The PMA stimulated activity of the IL6-174G variant was repressed without E(2) present, but was derepressed by addition of E(2), P(c)=0.024. In contrast, the PMA stimulated IL6-174C activity was unaffected by E(2) as were the constitutive activities of the IL6-174G/C variants. In conclusion, higher IL6 promoter activity may confer risk to T1DM in very young females. This excess risk is negated with increasing age, possibly by the increasing E(2) levels in puberty.
AB - The type 1 diabetes mellitus (T1DM) candidate gene SNP IL6-174G/C was genotyped in 253 Danish T1DM families (1129 individuals). TDT analysis demonstrated linkage in the presence of association between the IL6-174C allele and T1DM in the 416 T1DM offspring, P(tdt)=0.04. Gender conditioned TDT analyses revealed that linkage and association with T1DM were present in females exclusively; P(tdt)=6.5 x 10(-4) and P(tdt)=2.4 x 10(-4), respectively. Random transmission of the IL6-174C/G alleles was found in T1DM males, non-T1DM males and non-T1DM females; all P(tdt)>/=0.37. Heterogeneity analyses (T1DM versus non-T1DM females) excluded preferential meiotic segregation in females, P=4.6 x 10(-3), and demonstrated differences in the transmission patterns between female and male T1DM offspring, P=5.1 x 10(-3). The IL6-174 CC genotype was associated with younger age at onset of T1DM in females (P=0.002). The impact of 17beta-estradiol (E(2)) on the IL6-174G/C variants was investigated by reporter studies. The PMA stimulated activity of the T1DM risk IL6-174C variant exceeded that of the T1DM protective IL6-174G variant by approximately 70% in the absence of E(2) (P(c)=0.004), but not with E(2) present (P(c)=0.12). The PMA stimulated activity of the IL6-174G variant was repressed without E(2) present, but was derepressed by addition of E(2), P(c)=0.024. In contrast, the PMA stimulated IL6-174C activity was unaffected by E(2) as were the constitutive activities of the IL6-174G/C variants. In conclusion, higher IL6 promoter activity may confer risk to T1DM in very young females. This excess risk is negated with increasing age, possibly by the increasing E(2) levels in puberty.
KW - Age of Onset
KW - Animals
KW - Diabetes Mellitus, Type 1
KW - Estradiol
KW - Female
KW - Humans
KW - Interleukin-6
KW - Male
KW - Mice
KW - Polymorphism, Genetic
KW - Promoter Regions, Genetic
KW - Sex Factors
M3 - Journal article
C2 - 12719374
VL - 12
SP - 1101
EP - 1110
JO - Human Molecular Genetics
JF - Human Molecular Genetics
SN - 0964-6906
IS - 10
ER -
ID: 45583507