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[Anterio-hypophyseal function in central diabetes insipidus]
Medicina (Florence, Italy)
|April 1, 1989
Summary
Post-traumatic and idiopathic central diabetes insipidus (C.DI) can present with heterogeneous hypothalamo-pituitary function. Periodic hormonal evaluation is crucial, as subclinical hypothyroidism may occur despite normal baseline pituitary function.
Area of Science:
- Endocrinology
- Neuroendocrinology
- Pituitary Disorders
Context:
- Central diabetes insipidus (C.DI) encompasses various etiologies, including post-traumatic (PT.DI), idiopathic (I.DI), and secondary forms.
- Adult patients with C.DI exhibit diverse hypothalamo-pituitary function, necessitating comprehensive assessment.
Purpose:
- To evaluate the hypothalamo-pituitary function in adult patients with different forms of C.DI.
- To identify potential subclinical hormonal deficiencies despite normal baseline pituitary function.
Summary:
- Thirty-two adult patients with C.DI (post-traumatic, secondary, idiopathic) underwent hormonal assessment (ACTH, TSH, FSH, LH, PRL, cortisol, T3, T4, Testosterone) with and without DDAVP therapy.
- Stimulation tests with releasing factors (TRH, LHRH, oCRH) were performed. While basal anterior pituitary function was generally normal, some patients showed isolated subclinical secondary or tertiary hypothyroidism.
- The CRH-ACTH axis response remained intact, suggesting vasopressin is not essential for its normal function.
Impact:
- Highlights the need for accurate, periodic, and complete hormonal evaluations in C.DI patients.
- Reveals that subclinical hypothyroidism can be present in C.DI patients, underscoring the importance of thorough endocrine assessment.
- Suggests that the CRH-ACTH axis is largely independent of vasopressin in maintaining normal function.