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Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay
Published on: January 31, 2022
Pituitary function in patients with hereditary haemochromatosis
P M Uitz1, S Hartleb, S Schaefer
1Division of Endocrinology & Diabetology, Faculty of Medicine and University Hospital, Philipp's University, Marburg, Germany.
Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Metabolisme
|October 4, 2012
Summary
Hereditary haemochromatosis frequently impairs pituitary function, especially in middle-aged adults. This study found significant corticotrophic insufficiency in 50% of patients, highlighting the need for endocrine monitoring in haemochromatosis.
Area of Science:
- Endocrinology
- Genetics
- Metabolic Disorders
Background:
- Hereditary haemochromatosis (HH) is a genetic disorder causing iron overload.
- Iron deposition can affect various endocrine organs, including the pituitary gland.
- Previous studies suggest a potential link between HH and pituitary dysfunction.
Purpose of the Study:
- To investigate pituitary function in adult patients with genetically confirmed hereditary haemochromatosis.
- To assess the prevalence of pituitary insufficiencies using standardized stimulation tests.
- To identify specific patterns of endocrine dysfunction in HH patients.
Main Methods:
- Prospective diagnostic study involving 22 adult patients with hereditary haemochromatosis.
- Standardized combined pituitary stimulation test using CRH, GHRH/arginine, GnRH, and TRH.
- Analysis of hormone levels including cortisol, testosterone, LH, and IGF-1.
Main Results:
- Pituitary insufficiencies were detected in 11 patients (50%).
- Isolated corticotrophic insufficiency was the most common finding (n=10).
- No somatotrophic pituitary insufficiencies were observed; low IGF-1 levels in 32% may indicate impaired hepatic synthesis.
Conclusions:
- Hypopituitarism, particularly corticotrophic insufficiency, is prevalent in middle-aged hereditary haemochromatosis patients.
- Endocrine screening, including pituitary function tests, is recommended for HH patients.
- Low IGF-1 levels in HH patients may occur independently of somatotrophic function.
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