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http://dx.doi.org/10.1378/chest.125.5_suppl.150s | DOI Listing |
J Pediatr Endocrinol Metab
January 2025
Department of Pediatric Endocrinology, Antalya Training and Research Hospital, University of Health Sciences, Antalya, Türkiye.
Objectives: Neonatal severe hyperparathyroidism (NSHPT) is a rare condition characterized by inactivating mutations in the calcium-sensing receptor () gene, leading to significant hypercalcemia and related complications.
Case Presentation: We present a case of a six-day-old male infant with weakness, jaundice, and hypotonia, later diagnosed with NSHPT due to a known homozygous mutation (c.242T>A; p.
Front Endocrinol (Lausanne)
January 2025
Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy.
Tertiary hyperparathyroidism is characterized by hypercalcemia resulting from autonomous parathyroid hormone production and usually occurs after a prolonged period of secondary hyperparathyroidism. This condition can be a complication of X-linked hypophosphatemia (XLH), a rare genetic disease characterized by renal phosphate loss and consequent hypophosphatemia. Parathyroidectomy is considered the first-line therapy but surgical intervention can be complicated by hungry bone syndrome.
View Article and Find Full Text PDFJ Am Soc Nephrol
January 2025
Department of Cardiovascular and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark.
Background: The parathyroid calcium-sensing receptor (CASR) controls the release of parathyroid hormone (PTH) in response to changes in serum calcium levels. Activation of the renal CASR increases urinary calcium excretion and is particularly important when CASR-dependent reductions in PTH fail to lower serum calcium. However, the role of the renal CASR in protecting against hypercalcemia and the direct effects of chronic CASR activation on tubular calcium handling remains to be fully elucidated.
View Article and Find Full Text PDFJBMR Plus
February 2025
Radiology and Imaging Sciences, National Institutes of Health Clinical Center, National Institutes of Health, Bethesda, MD 20892, United States.
Jansen metaphyseal chondrodysplasia (JMC) is an ultra-rare disorder caused by constitutive activation of parathyroid hormone type 1 receptor (PTH1R). We sought to characterize the craniofacial phenotype of patients with the disease. Six patients with genetically confirmed JMC underwent comprehensive craniofacial phenotyping revealing a distinct facial appearance that prompted a cephalometric analysis demonstrating a pattern of mandibular retrognathia.
View Article and Find Full Text PDFJBMR Plus
February 2025
Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, VIC 3050, Australia.
Cherubism is a rare autosomal dominant skeletal dysplasia, affecting the maxilla and/or mandible. The condition typically has childhood onset, followed by progression until puberty, with subsequent regression. Cherubism lesions share histological features with giant cell tumor of bone, where high-dose monthly denosumab is an effective medical treatment.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!