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Related Experiment Videos

Hypertension in pseudohypoparathyroidism type I.

A S Brickman1, N Stern, J R Sowers

  • 1Endocrinology Division, Sepulveda Veterans Administration Medical Center, California 91343.

The American Journal of Medicine
|December 1, 1988
PubMed
Summary

Hypertension is common in pseudohypoparathyroidism (PsHP) types Ia and Ib, particularly in those with severe obesity. This endocrine hypertension shows distinct hormonal and nervous system alterations compared to general obesity-related hypertension.

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Area of Science:

  • Endocrinology
  • Cardiovascular Medicine
  • Human Physiology

Background:

  • Calcium homeostasis plays a key role in blood pressure regulation.
  • Pseudohypoparathyroidism (PsHP) involves resistance to parathyroid hormone, affecting calcium metabolism.
  • Studying PsHP offers insights into calcium's role in human arterial pressure modulation.

Purpose of the Study:

  • To investigate blood pressure levels in patients with pseudohypoparathyroidism (PsHP) types Ia and Ib.
  • To understand the relationship between PsHP, calcium homeostasis, and hypertension.
  • To explore the role of calcitrophic hormones in modulating arterial pressure in PsHP.

Main Methods:

  • Recruited 46 patients with type I PsHP (28 type Ia, 18 type Ib).
  • Measured blood pressure and assessed obesity in all participants.

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  • Conducted detailed hormonal measurements in nine hypertensive PsHP patients.

    • Main Results:

    • Hypertension was present in 53% of adult PsHP patients (18 of 34).
    • Hypertension prevalence was similar in PsHP types Ia and Ib and not linked to hypothyroidism or hypocalcemia.
    • PsHP-related hypertension was strongly associated with severe obesity, with significantly higher body weight in hypertensive patients.

    Conclusions:

    • Hypertension is a common finding in PsHP types Ia and Ib.
    • This endocrine hypertension is linked to excessive body weight but exhibits unique renin-aldosterone and sympathetic nervous system alterations.
    • The underlying pathophysiology of hypertension in these PsHP forms requires further investigation.