A patient with a mixed pituitary tumor secreting TSH and GH was treated, starting 3 months after partial adenomectomy, with the somatostatin analog SMS 201-995 for 8 months. Somatostatin itself inhibited TSH, GH, and alpha-subunit release by the tumor both in vivo and in vitro. Long term treatment with twice daily sc injections of SMS 201-995 resulted in decreased TSH secretion and lower serum thyroid hormone levels. However, euthyroidism was achieved only when the patient was treated with three daily 200-micrograms injections of SMS 201-995. After 30 weeks of SMS 201-995 therapy, TSH secretion increased, while GH secretion remained suppressed. After withdrawal for 6 months, SMS 201-995 (100 micrograms, sc, twice daily) again completely inhibited TSH secretion. SMS 201-995 did not alter the volume of the residual adenomatous tissue. We conclude that SMS 201-995 may be a valuable therapeutic agent for the management of patients with a thyrotroph adenoma. However, desensitization may occur during long term treatment.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1210/jcem-66-3-636 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Partial AUCs in Long-Acting Injectables: Rationale, Challenges, Variability, Usefulness, and Clinical Relevance.
Pharmaceutics
December 2024
Pharmathen SA, 31 Spartis Str., 14452 Metamorfosi Attica, Greece.
Regulatory authorities typically require bioequivalence to be demonstrated by comparing pharmacokinetic parameters like area under the plasma concentration-time curve (AUC) and maximum plasma concentration (C). Because in certain cases, AUC and C alone may not be adequate to identify formulation differences in early and/or late segments of the dosing interval, partial AUCs (pAUCs) have been proposed as additional metrics to evaluate bioequivalence. Even though cut-off points for pAUCs are usually decided based on clinical relevance, the identification of the correct cut-off range remains elusive in many other cases and tends to contribute to increased pAUC estimate variabilities.
View Article and Find Full Text PDFDifferential Impact of Medical Therapies for Acromegaly on Glucose Metabolism.
Int J Mol Sci
January 2025
Endocrinology Unit, Department of Internal Medicine and Medical Specialties, School of Medical and Pharmaceutical Sciences, University of Genova, 16132 Genova, Italy.
Acromegaly is a rare endocrine disorder caused by excessive growth hormone (GH) production, due, in the vast majority of cases, to the presence of a GH-secreting pituitary tumour. The chronic elevation of GH and the resulting high circulating levels of insulin-like growth factor-1 (IGF-1) cause the characteristic tissue overgrowth and a number of associated comorbidities, including several metabolic changes, such as glucose intolerance and overt diabetes mellitus (DM). Elevated GH concentrations directly attenuate insulin signalling and stimulate lipolysis, decreasing glucose uptake in peripheral tissues, thus leading to the development of impaired glucose tolerance and DM.
View Article and Find Full Text PDFASO Author Reflections: The Effects of Perioperative Corticosteroids on Postoperative Complications After Pancreatoduodenectomy: A Debated Topic of Systematic Review and Meta-analysis.
Ann Surg Oncol
January 2025
Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Introduction: Pancreatoduodenectomy (PD) is a complex surgery with high morbidity and mortality, often associated with complications like post-pancreatectomy hemorrhage (PPH) and postoperative pancreatic fistulas (POPF). The corticosteroids administered intraoperatively has been shown to improve postoperative outcomes in patients undergoing surgery. However, their impact on complications following PD remains controversial.
View Article and Find Full Text PDFA Rare Case of Peritoneal Mesothelioma Detected by 18F-AlF-NOTA-Octreotide PET/CT.
Clin Nucl Med
January 2025
From the Department of Nuclear Medicine (PET-CT Center), National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
We present a case of 37-year-old man with multiple masses in the abdominal and pelvic cavity who underwent 18F-AlF-NOTA-octreotide PET/CT. The masses demonstrated heterogeneously increased uptake on 18F-AlF-NOTA-octreotide PET/CT and were suggestive of neuroendocrine tumor. However, the histopathological examinations confirmed the masses to be peritoneal mesothelioma.
View Article and Find Full Text PDFPharmacological Strategies for High-Output Ileostomies in Children: A Narrative Review.
Acta Paediatr
January 2025
Department of Paediatric Gastroenterology, University Hospitals Leuven, Leuven, Belgium.
Aim: Nutritional measures often suffice for managing high-output ileostomy (HOI) in paediatric patients, but pharmacological treatment may be required to control ostomy output. This paper reviews the literature on the pharmacological management of paediatric HOI and provides recommendations.
Methods: PubMed and Embase were searched for relevant articles up to 22 May 2024.
Want 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!