Clinical and in-vitro investigations have been performed on a corticotroph adenoma removed from a patient suffering from Cushing's disease. Prior to surgery, the patient's Cushing's disease had been successfully controlled, clinically and biochemically, by long term administration of bromocriptine. After selective adenomectomy, tumour tissue was investigated by a perfused isolated cell column technique. It was shown that the tumour cells secreted immunoreactive- (IR)- ACTH and IR-alpha-MSH and that the release of both peptides was promptly suppressed by dopamine. Chromatographic analysis of the secreted IR-alpha-MSH revealed a high proportion of acetylated alpha-MSH; smaller amounts of desacetyl alpha-MSH and diacetyl alpha-MSH were present. The relevance of these findings to the proposal that certain corticotroph adenomas are derived from the intermediate lobe of the pituitary is discussed. It is concluded that there is little direct evidence for involvement of the residual zona intermedia of the adult human pituitary in the development of Cushing's disease.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/j.1365-2265.1988.tb03658.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Leukocytosis in Cushing's syndrome persists post-surgical remission and could predict a lower remission prognosis in patients with Cushing's disease.
J Endocrinol Invest
January 2025
Institute of Endocrinology, Beilinson Hospital, Rabin Medical Center, Petach Tikva, 49100, Israel.
Context: Leukocytosis frequently noted in Cushing's syndrome (CS), along with other blood cell changes caused by direct and indirect cortisol effects.
Objective: Assess baseline white blood cell (WBC) profile in CS patients compared to controls and WBC changes pre- and post-remission after surgical treatment for CS.
Design: A comparative nationwide retrospective cohort study.
Diagnostic value of 11C-Methionine PET-CT imaging in persistent or recurrent Cushing's disease after surgery.
J Clin Endocrinol Metab
January 2025
Department of Endocrinology and Nutrition, Cliniques Universitaires Saint-Luc UCL, Bruxelles, Belgium.
Introduction: Equivocal or negative pituitary magnetic resonance imaging (MRI) findings raise a significant challenge in the management of persistent or recurrent Cushing's disease (CD), compromising the chances of success of a further transsphenoidal surgery (TSS). The aim of our study was to determine the diagnostic utility of 11C-methionine (MET) positron emission tomography coupled with computerized tomography (PET/CT) in localizing the residual or relapsing corticotroph adenoma.
Methods: We retrospectively analyzed the results of 11C-MET PET/CT performed in two tertiary medical centers between May 2002 and November 2023 in 22 patients with a persisting or recurrent CD after initial TSS and equivocal or negative pituitary MRI findings.
Factors predicting secondary hypertension in young adults with hypertension: a retrospective study.
BMC Cardiovasc Disord
January 2025
Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Background: Hypertension in young adults is often due to secondary causes, and investigating these can be resource-intensive. This study aimed to identify clinical and biochemical markers that could suggest secondary hypertension in individuals under 40 years.
Materials And Methods: A 6-year retrospective observational cohort study included 207 young adults with hypertension who were assessed for secondary causes such as hyperthyroidism, primary aldosteronism, Cushing's syndrome, pheochromocytoma, and renovascular disease.
Purpose: To evaluate the effect of osilodrostat and hypercortisolism control on blood pressure (BP) and glycemic control in patients with Cushing's disease.
Methods: Pooled analysis of two Phase III osilodrostat studies (LINC 3 and LINC 4), both comprising a 48-week core phase and an optional open-label extension. Changes from baseline in systolic and diastolic BP (SBP and DBP), fasting plasma glucose (FPG), and glycated hemoglobin (HbA) were evaluated during osilodrostat treatment in patients with/without hypertension or diabetes at baseline.
Selective resection of the medial wall of the cavernous sinus in pituitary surgery: results of a prospective single center analysis.
Pituitary
January 2025
Department of Neurosurgery, Mayo Clinic, Jacksonville, FL, USA.
Purpose: Pituitary adenomas, despite their histologically benign nature, can severely impact patients' quality of life due to hormone hypersecretion. Invasion of the medial wall of the cavernous sinus (MWCS) by these tumors complicates surgical outcomes, lowering biochemical remission rates and increasing recurrence. This study aims to share our institutional experience with the selective resection of the MWCS in endoscopic pituitary surgery.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!