AI Article Synopsis

  • Pseudohypoparathyroidism (PHP) is a rare genetic disorder that leads to low calcium levels, high phosphate levels, and increased parathyroid hormone in the blood.
  • The case presented focuses on a patient with PHP type IB and subclinical hypothyroidism, along with an analysis of his family's clinical and genetic data.
  • The study reviews existing literature, categorizes PHP subtypes, discusses their causes and symptoms, and offers treatment strategies to better equip healthcare professionals in managing the condition.

Article Abstract

Pseudohypoparathyroidism (PHP) is a rare genetic disease characterized by hypocalcemia, hyperphosphatemia, and elevated parathyroid hormone (PTH) in serum. Here, we report a case of a patient with pseudohypoparathyroidism type IB (PHPIB) and subclinical hypothyroidism, analyze the clinical and genetic data of his family members, review the relevant literature, and classify and discuss the pathogenesis and clinical characteristics of each subtype. Finally, we discuss the treatment approach to improve clinicians' understanding of the disease.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11100510PMC
http://dx.doi.org/10.2147/DMSO.S458405DOI Listing

Publication Analysis

Top Keywords

pseudohypoparathyroidism type
8
subclinical hypothyroidism
8
type subclinical
4
hypothyroidism pedigree
4
pedigree investigation
4
investigation literature
4
literature review
4
review pseudohypoparathyroidism
4
pseudohypoparathyroidism php
4
php rare
4

Similar Publications

Heterodisomy in the locus is also a cause of pseudohypoparathyroidism type 1B (iPPSD3).

Front Endocrinol (Lausanne)

December 2024

Rare Disease Research Group, Molecular (Epi) Genetics Laboratory, Bioaraba Health Research Institute, Araba University Hospital, Vitoria-Gasteiz, Spain.

Objective: To identify the genetic cause underlying the methylation defect in a patient with clinical suspicion of PHP1B/iPPSD3.

Design: Imprinting is an epigenetic mechanism that allows the regulation of gene expression. The locus is one of the loci within the genome that is imprinted.

View Article and Find Full Text PDF
Article Synopsis
  • - Pseudohypoparathyroidism type 1B (PHP1B) is caused by epigenetic changes affecting the GNAS gene, leading to parathyroid hormone resistance, especially in kidney cells due to inhibited Gsα protein expression from the maternal allele.
  • - Genetic defects in PHP1B patients include loss of methylation in specific regions and additional methylation issues in some, prompting researchers to identify the genetic basis for autosomal dominant PHP1B in families with complex GNAS methylation problems.
  • - Genome sequencing highlighted small GNAS variants and a microdeletion in affected families that possibly alter AS transcript expression, leading to reduced NESP transcription, thus suggesting a mechanism behind PHP1B development.
View Article and Find Full Text PDF
Article Synopsis
  • This report investigates a family with familial isolated hypoparathyroidism (FIH), highlighting a specific mutation that leads to high levels of functionally inactive parathyroid hormone (PTH) in a 34-year-old woman and her siblings.* -
  • The siblings were diagnosed with pseudohypoparathyroidism type 1b, characterized by chronic low calcium levels and elevated PTH, but without the typical features of related disorders.* -
  • Treatment with teriparatide, a recombinant human PTH, successfully normalized calcium levels and improved wellbeing for the patient, indicating that inactive variants of PTH can lead to complex hypocalcemia cases.*
View Article and Find Full Text PDF
Article Synopsis
  • Vitamin D-dependent rickets type 1A is an autosomal recessive disorder caused by mutations in a specific gene, leading to reduced production of active vitamin D in the kidneys.
  • A case of a 16-year-old Asian male with growth issues, bone deformities, and abnormal biochemical markers was initially misdiagnosed with pseudohypoparathyroidism due to low vitamin D and calcium and high phosphorus levels.
  • Molecular testing showed he had a novel mutation associated with vitamin D-dependent rickets type 1A, and high phosphorus levels were later attributed to concurrent extrapulmonary tuberculosis.
View Article and Find Full Text PDF
Article Synopsis
  • Two patients of East African descent have been identified with a novel homozygous variant in the parathyroid hormone receptor type 1 (PTH1R), which is linked to Eiken syndrome features such as brachydactyly and skeletal abnormalities.
  • Both patients showed parathyroid hormone resistance, resulting in low calcium and high phosphate levels, which initially pointed to pseudohypoparathyroidism, yet genetic testing confirmed a specific PTH1R mutation.
  • Functional analysis revealed that both PTH1R variants caused increased basal cAMP signaling and reduced responsiveness to PTH and PTH-related peptide, indicating a disruption in PTH1R signaling pathways associated with their clinical symptoms.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!