Adult female armadillos were injected with tritiated estradiol. The pituitary gland was removed and processed for autoradiography. Nuclear uptake and retention of the steroid was found in 28.8% of the cells in the pars distalis and 3.7% of the pituicytes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF01971824 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Novel therapeutic approaches targeting 5-HT7 receptors outside the central nervous system.
J Recept Signal Transduct Res
January 2025
Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey.
Serotonin (5-HT) is a neurotransmitter found throughout the human body that regulates many physiological events arising from the brain and central nervous system (CNS), such as sleep and appetite. However, it has many other functions in systems outside. In addition to the routine expression of 5-HT7 receptors in CNS regions, such as the pituitary gland, spinal cord, and hippocampus, many studies have reported the expression of these receptors in pathological conditions outside.
View Article and Find Full Text PDFScreening with Metoclopramide Test to Reduce Unnecessary Pituitary Magnetic Resonance Studies in Moderate Hyperprolactinemia.
J Appl Lab Med
January 2025
Service of Biochemistry, Clínica Universidad de Navarra, Pamplona, Spain.
Background: In prolactinoma diagnosis, current guidelines recommend prolactin (PRL) assessment, considering values exceeding 200 ng/mL highly suggestive of prolactinoma. However, subtler hyperprolactinemia is more common, and to rule out potential prolactinomas, pituitary resonance magnetic imaging (MRI) studies are necessary. These present limitations in terms of availability, costs, and delays in diagnosis.
View Article and Find Full Text PDFDirect photoreception by pituitary endocrine cells regulates hormone release and pigmentation.
Science
January 2025
Department of Marine Bioscience, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan.
The recent discovery of nonvisual photoreceptors in various organs has raised expectations for uncovering their roles and underlying mechanisms. In this work, we identified a previously unrecognized hormone-releasing mechanism in the pituitary of the Japanese rice fish (medaka) induced by light. Ca imaging analysis revealed that melanotrophs, a type of pituitary endocrine cell that secretes melanocyte-stimulating hormone, robustly increase the concentration of intracellular Ca during short-wavelength light exposure.
View Article and Find Full Text PDFRET signalling in the pituitary: a double-edged sword for differentiation, apoptosis and therapeutic strategies in acromegaly.
Endocr Relat Cancer
January 2025
C Alvarez, Centro de Investigación en Medicina Molecular y Enfermedades Crónicas (CIMUS), University of Santiago de Compostela (USC), Santiago de Compostela, Spain.
The discovery of RET mutations in Multiple Endocrine Neoplasia 2A (MEN2A) in 1993 ignited a revolution in our understanding of this versatile receptor. Since then, RET's influence has expanded to encompass diverse organs, including the pituitary gland. This review explores the multifaceted role of RET in somatotrophs, focusing on two opposing pathways: proliferation versus differentiation and apoptosis.
View Article and Find Full Text PDFCase report: Pheochromocytoma-induced pseudo-Cushing's syndrome.
Front Endocrinol (Lausanne)
January 2025
Department of Internal Medicine and Endocrinology, University Clinical Centre of the Medical University of Warsaw, Warsaw, Poland.
Article Synopsis
- Non-neoplastic hypercortisolaemia, or pseudo-Cushing's syndrome (PCS), can occur due to various health conditions like depression, obesity, and diabetes, linked to overactivity of the hypothalamic-pituitary-adrenal axis.
- A 66-year-old woman exhibited symptoms such as weakness, weight loss, and poorly controlled hypertension, which led to the discovery of pheochromocytoma, a tumor that causes hormone overproduction, upon further testing.
- After undergoing surgery to remove the tumor and receiving supportive treatment, her symptoms improved significantly, confirming the diagnosis of PCS rather than traditional Cushing's syndrome.
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!