Evidence map›Paper›PMID 19837919›Full record

ArticleThe Journal of clinical endocrinology and metabolism2009

Activating autoantibodies against the calcium-sensing receptor detected in two patients with autoimmune polyendocrine syndrome type 1.

E Helen Kemp, Nikos G Gavalas, Kai J E Krohn, Edward M Brown, Philip F Watson, Anthony P Weetman

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical endocrinology and metabolism, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
3.3field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 74 citations in OpenAlex.

  1. Pooled it
  2. Etiology and Pathophysiology of Hypoparathyroidism: A Narrative Review.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2022
    Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Calcium-sensing receptor 20 years later.American journal of physiology. Cell physiology · 2014
    Review
  15. Calcium-sensing receptor: Role in health and disease.Indian journal of endocrinology and metabolism · 2012
    Article
  16. Review
  17. Article
  18. Hypoparathyroidism in the adult: epidemiology, diagnosis, pathophysiology, target-organ involvement, treatment, and challenges for future research.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2011
    Article
  19. Article
  20. Physiology and pathophysiology of the calcium-sensing receptor in the kidney.American journal of physiology. Renal physiology · 2010
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 3 countries.

E Helen KempDepartment of Human Metabolism, School of Medicine, University of Sheffield, Royal Hallamshire Hospital, Glossop Road, Sheffield S10 2JF, United Kingdom. e.h.kemp@sheffield.ac.uk
Nikos G Gavalas
Kai J E Krohn
Edward M Brown
Philip F Watson
Anthony P Weetman
University of Sheffield · GBBrigham and Women's Hospital · USTampere University Hospital · FI

Funding

Ca2+-Sensing Receptor: Novel Roles in Calcium HomeostasisR01DK078331 · NIDDK · BRIGHAM AND WOMEN'S HOSPITAL · PI BROWN, EDWARD M · 2008 to 2011
$1.4M
CA2+-RECEPTOR: IMMUNE MODULATION IN VIVO AND IN VITROR01DK067111 · NIDDK · BRIGHAM AND WOMEN'S HOSPITAL · PI BROWN, EDWARD M · 2004 to 2007
$1.2M
NIDDK NIH HHS DK078331NIDDK NIH HHS DK67111NIDDK NIH HHS R01 DK067111NIDDK NIH HHS R01 DK078331
6 · The paper itself

Abstract

contextAutoimmune polyendocrine syndrome type 1 (APS1) is an autosomal recessive disorder caused by mutations in the autoimmune regulator (AIRE) gene. Hypoparathyroidism occurs in 80% of patients with APS1 and has been suggested to result from an autoimmune reaction against the calcium-sensing receptor (CaSR) in parathyroid cells. Anti-CaSR binding antibodies have previously been detected in patients with APS1.

objectiveThe aim of this study was to determine whether anti-CaSR antibodies present in APS1 patients could modulate the response of the CaSR to stimulation by Ca(2+).

resultsThe results indicated that two of the 14 APS1 patients included in the study had anti-CaSR antibodies that stimulated the receptor. These antibodies were detected by their ability to increase both Ca(2+)-dependent extracellular signal-regulated kinase phosphorylation and inositol phosphate accumulation in human embryonic kidney 293 cells expressing the CaSR.

conclusionAn important implication of the present results is that although the majority of APS1 patients do not have CaSR-stimulating antibodies, there may be a small but substantial minority of patients in whom the hypoparathyroid state is the result of functional suppression of the parathyroid glands rather than their irreversible destruction.

Indexed as

AdolescentAdultAutoantibodiesCell LineChildExtracellular Signal-Regulated MAP KinasesFemaleHumansHypoparathyroidismImmunoglobulin GInositol PhosphatesMaleMiddle AgedPhosphorylationPolyendocrinopathies, AutoimmuneReceptors, Calcium-SensingAutoantibodiesExtracellular Signal-Regulated MAP KinasesImmunoglobulin GInositol PhosphatesReceptors, Calcium-Sensing

Identifiers

PMID19837919
PMCPMC2795648
OpenAlexW2051842912

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.