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• W2013470933 abstract "Abnormal nephron development associated with a frameshift mutation in the transcription factor hepatocyte nuclear factor-1β.BackgroundThe transcription factor hepatocyte nuclear factor (HNF)-1β functions as a homodimer or as a heterodimer with the structurally related protein HNF-1α. Both are expressed sequentially in rat kidney development, with HNF-1β being detected from the earliest inductory phases. HNF-1β gene mutations are associated with a unique disorder characterized by maturity-onset diabetes of the young (MODY) and early-onset and progressive nondiabetic renal dysfunction, which may lead to chronic renal failure.MethodsThe HNF-1β gene was screened for mutations in six subjects with early-onset diabetes and a history of renal dysfunction in the subjects or their families.ResultsA novel frameshift mutation in exon 4 of the HNF-1β gene and a deletion of CCTCT at codons 328 to 329 were detected in one subject. She was diagnosed as diabetic at the age of 21 in her second pregnancy. Glucose tolerance rapidly deteriorated over 18 months as a result of β-cell dysfunction. The HNF-1β mutation arose de novo on a paternal chromosome and cosegregated with renal abnormalities in her family. The proband had bilateral small cysts in normal-sized kidneys and a reduced creatinine clearance of 66 mL/min (NR 80–120). Her first pregnancy was terminated at 17 weeks following an ultrasound diagnosis of bilateral, nonfunctioning cystic kidneys. Her first-born child had a small multicystic, dysplastic right kidney and a dysplastic left kidney with a reduced creatinine clearance (40 mL/min per 1.73 m2). Histologic examination of the large (5.8 vs. 1.4 g), polycystic fetal kidneys showed no normal nephrogenesis.ConclusionsThese studies indicate that HNF-1β plays a central role in normal kidney development and pancreatic β-cell function, and suggest that one mechanism by which HNF-1β gene mutations may cause renal dysfunction are by their effects on nephron development. Abnormal nephron development associated with a frameshift mutation in the transcription factor hepatocyte nuclear factor-1β. The transcription factor hepatocyte nuclear factor (HNF)-1β functions as a homodimer or as a heterodimer with the structurally related protein HNF-1α. Both are expressed sequentially in rat kidney development, with HNF-1β being detected from the earliest inductory phases. HNF-1β gene mutations are associated with a unique disorder characterized by maturity-onset diabetes of the young (MODY) and early-onset and progressive nondiabetic renal dysfunction, which may lead to chronic renal failure. The HNF-1β gene was screened for mutations in six subjects with early-onset diabetes and a history of renal dysfunction in the subjects or their families. A novel frameshift mutation in exon 4 of the HNF-1β gene and a deletion of CCTCT at codons 328 to 329 were detected in one subject. She was diagnosed as diabetic at the age of 21 in her second pregnancy. Glucose tolerance rapidly deteriorated over 18 months as a result of β-cell dysfunction. The HNF-1β mutation arose de novo on a paternal chromosome and cosegregated with renal abnormalities in her family. The proband had bilateral small cysts in normal-sized kidneys and a reduced creatinine clearance of 66 mL/min (NR 80–120). Her first pregnancy was terminated at 17 weeks following an ultrasound diagnosis of bilateral, nonfunctioning cystic kidneys. Her first-born child had a small multicystic, dysplastic right kidney and a dysplastic left kidney with a reduced creatinine clearance (40 mL/min per 1.73 m2). Histologic examination of the large (5.8 vs. 1.4 g), polycystic fetal kidneys showed no normal nephrogenesis. These studies indicate that HNF-1β plays a central role in normal kidney development and pancreatic β-cell function, and suggest that one mechanism by which HNF-1β gene mutations may cause renal dysfunction are by their effects on nephron development." @default.
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• W2013470933 date "2000-03-01" @default.
• W2013470933 modified "2023-10-16" @default.
• W2013470933 title "Abnormal nephron development associated with a frameshift mutation in the transcription factor hepatocyte nuclear factor-1β1" @default.
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• W2013470933 doi "https://doi.org/10.1046/j.1523-1755.2000.057003898.x" @default.
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