The chemokine SDF-1 (CXCL12) and its receptor CXCR4 control several processes during embryonic development such as the regulation of stem cell proliferation, differentiation, and migration. However, the role of this pathway in the formation of the pituitary gland is not understood. We sought to characterise the expression patterns of CXCR4, SDF-1 and CXCR7 at different stages of pituitary gland development. Our expression profiling revealed that SDF-1 is expressed in progenitor-rich regions of the pituitary anterior lobe, that CXCR4 and CXCR7 have opposite expression domains and that CXCR4 expression is conserved between mice and human embryos. We then assessed the importance of this signalling pathway in the development and function of the murine pituitary gland through conditional deletion of CXCR4 in embryonic pituitary progenitors. Successful and specific ablation of CXCR4 expression in embryonic pituitary progenitors did not lead to observable embryonic nor postnatal defects but allowed the identification of stromal CXCR4+ cells not derived from HESX1+ progenitors. Further analysis of constitutive SDF-1, CXCR7 and CXCR4 mutants of the pathway indicates that CXCR4 expression in HESX1+ cells and their descendants is not essential for normal pituitary development in mice.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9937476 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0280001 | PLOS |
Publication Analysis
Top Keywords
Similar Publications
Intrasellar Tuberculosis Presenting as Pituitary Apoplexy: A Case Report.
Cureus
December 2024
Department of Neurosurgery, NMC Royal Hospital, Abu Dhabi, ARE.
Patients presenting with acute onset of headache and ophthalmoplegia are clinically diagnosed as having a pituitary adenoma with apoplexy. Rarely, other diseases can mimic this condition clinically and radiologically, requiring a high index of suspicion to reach the correct diagnosis. We present a case of a 37-year-old male of Indian origin, who had intra- and supra-sellar tuberculosis (TB), presenting with classical clinical features of pituitary apoplexy and constitutional symptoms.
View Article and Find Full Text PDFUse of "enhanced contact endoscopy for pituitary surgery" in a collision sellar tumor (papillary craniopharyngioma + non-functional pituitary adenoma): Representative case illustration and two-dimensional operative video.
Surg Neurol Int
December 2024
Center for Skull Base and Minimally Invasive Neurosurgery, Hospital Angeles Pedregal, Centro de Especialidades Quirúrgicas, Mexico City, Mexico.
Background: Collision sellar tumors are rare disease entities. Less than 30 cases have been reported in the literature in the last 20 years. We present the case of one patient diagnosed with a collision sellar tumor and describe the use of Enhanced Contact Endoscopy for pituitary gland and tumoral identification not previously described in the literature.
View Article and Find Full Text PDFMultifaceted delineation of atrophic thyroiditis among pediatric population: An extensive literature survey.
Clin Pediatr Endocrinol
January 2025
Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan.
Autoimmune hypothyroidism is categorized into Hashimoto thyroiditis (HT) and atrophic thyroiditis (AT). Although a consensus exists among Japanese endocrinologists that pediatric AT is associated with severe hypothyroidism, the question remains whether AT and HT are separate conditions. To investigate the clinical characteristics of pediatric AT, we conducted a comprehensive literature review using PubMed and ICHUSHI, a local database.
View Article and Find Full Text PDFPrevalence and outcomes of patients taking oral corticosteroids for over 1 month undergoing major surgery in England 2010-2020.
Anaesthesia
January 2025
Bristol Heart Institute, Bristol Medical School, University of Bristol, Bristol, UK.
Introduction: Approximately 1% of the UK population is prescribed oral corticosteroids at any one time. It is not known how many of these patients present for major surgery. We aimed to establish the prevalence, characteristics and outcomes of patients taking oral corticosteroids.
View Article and Find Full Text PDFEndocrine dysfunction in long-term survivors of pediatric head and neck rhabdomyosarcoma.
Eur J Endocrinol
January 2025
Department of Pediatric Oncology, Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands.
Objective: Survivors of pediatric head and neck rhabdomyosarcoma (HNRMS) are at risk of developing endocrinopathies following local treatment, resulting from radiation damage to the pituitary gland, hypothalamus, or thyroid gland, often at a young age. Our aim was to determine the prevalence of endocrine dysfunction in long-term HNRMS survivors and compare the prevalence of anterior pituitary insufficiency (API) among different local treatment strategies: external beam radiation with photons, external beam radiation with protons, microscopically radical surgery combined with external irradiation, and macroscopic radical surgery combined with brachytherapy.
Design And Methods: Head and neck rhabdomyosarcoma survivors treated between 1993 and 2017, with ≥2 years of follow-up, without recurrent disease or secondary malignancy were eligible for this study.
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!