Publications by authors named "M Mannstadt"

Background: Fibrous dysplasia/McCune-Albright syndrome (FD/MAS) is a genetic disorder, marked by bone lesions, often affecting the craniofacial skeleton. Pain is a prevalent yet heterogeneous symptom reported by patients with craniofacial FD. Effective treatments are currently lacking, posing a significant clinical challenge to patient care.

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Context: Genetic testing of the calcium-sensing receptor (CASR) gene is crucial for confirming diagnoses of familial hypocalciuric hypercalcemia type I (FHH1) and autosomal dominant hypocalcemia type I (ADH1). Therefore, we created a publicly accessible comprehensive database of the disease-causing variants of the CASR gene.

Evidence Acquisition: We used two sources for variant reports: (1) we conducted a systematic review in the Embase and Pubmed databases from inception to March 2023, using search strategies associated with CASR.

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Purpose Of Review: Hypoparathyroidism (hypoPTH) is a rare disease that requires diligent adherence to treatment regimens to prevent hypocalcemia but also treatment-induced hypercalcemia and hypercalciuria. The menstrual cycle, pregnancy, and lactation can all impact calcium homeostasis but there is little known regarding the impact of ovarian stimulation. Furthermore, the limited reports suggest no clear association between menstrual phase and calcium balance among those with hypoPTH.

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Article Synopsis
  • Fibrous dysplasia/McCune-Albright Syndrome (FD/MAS) often affects the craniofacial skeleton, requiring diverse imaging techniques (like X-rays, CT, MRI, and F-NaF PET) to assess the lesions.
  • A study involving 15 patients with 35 lesions used a k-means clustering algorithm to classify these based on their imaging features.
  • The findings indicate three distinct types of lesions, providing a basis for future research into their progression, treatment options, and associated symptoms, ultimately improving patient management.
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Context: Continuous subcutaneous infusion of recombinant parathyroid hormone (rhPTH) through a pump has been proposed as a therapeutic alternative for patients with chronic hypoparathyroidism who remain symptomatic or hypercalciuric on conventional treatment (calcium and active vitamin D) or daily injections of rhPTH(1-84) or rhPTH(1-34). However, the real-world evidence of the outcome of this novel therapy is limited.

Case Descriptions: We report the clinical and biochemical outcomes of 12 adults with hypoparathyroidism (11 women, age 30-70 years, and 1 man, age 30 years) from 3 different clinical sites in the United States who were transitioned from conventional therapy to daily injections of rhPTH(1-84) or rhPTH(1-34) and then switched to continuous administration of rhPTH(1-84)/rhPTH(1-34) via pump therapy.

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