A 24-year-old male with end-stage renal disease (ESRD) and disproportionately high uric acid plasma concentration was admitted to our unit. After studying the patient's medical history, as well as that of the entire family, hyperuricemia was discovered in his brother, while microscopic examination of his brother's and mother's urine revealed abundant uric acid crystals. After performing purine metabolic studies, it was determined that the two siblings suffered from partial hypoxanthine-guanine phosphoribosyltransferase (HPRT) deficiency (Kelley-Seegmiller syndrome). This report highlights the importance of clinical awareness and a thorough examination of the patient's medical history for establishing an early diagnosis and commencing treatment for such rare inherited metabolic disorders to prevent renal failure.
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Diagnostics (Basel)
December 2024
Department of Pediatrics, MacKay Memorial Hospital, Taipei 104217, Taiwan.
Background: Lesch-Nyhan syndrome (LNS) is a rare X-linked recessive metabolic disorder caused by mutations in the gene, resulting in hypoxanthine-guanine phosphoribosyltransferase (HPRT) deficiency. Early diagnosis is critical for optimizing management and improving outcomes. This study presents a case series of three Taiwanese patients diagnosed at a single medical center.
View Article and Find Full Text PDFBMC Mol Cell Biol
January 2025
Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, China.
Background: Inactivation or mutations of FAM20C causes human Raine Syndrome, which manifests as lethal osteosclerosis bone dysplasia or non-lethal hypophosphatemia rickets. However, it is only hypophosphatemia rickets that was reported in the mice with Fam20c deletion or mutations. To further investigate the local and global impacts of Fam20c mutation, we constructed a knock-in allele carrying Fam20c mutation (D446N) found in the non-lethal Raine Syndrome.
View Article and Find Full Text PDFIndian J Pediatr
December 2024
Department of Nephrology, Batman Training and Research Hospital, Batman, Turkey.
medRxiv
December 2024
Institute of Neurogenetics, University of Lübeck, 23538 Lübeck, Germany.
Acta Biochim Biophys Sin (Shanghai)
November 2024
Jiangxi Provincial Key Laboratory of Respiratory Diseases, Jiangxi Institute of Respiratory Disease, Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, China.
DNA replication stress is a significant contributor to spontaneous DNA damage and genome instability. While the impact of p53 deficiency on increasing DNA replication stress is known, the specific molecular mechanism underlying this phenomenon remains poorly understood. This study explores how p53 deficiency induces DNA replication stress by activating mTORC1 through R-loop formation, which is facilitated by the upregulation of RNR.
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