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Potassium Current Signature of Neuronal/Glial Progenitors in Amniotic Fluid Stem Cells.
Cells
January 2025
Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell'Elce di Sotto 8, 06123 Perugia, Italy.
Article Synopsis
- Amniotic fluid contains stem cells (AF-SCs) that have potential uses in regenerative medicine for treating various injuries and diseases.
- When exposed to basic Fibroblast Growth Factor (bFGF), AF-SCs show the ability to survive and migrate in a rat brain model, resembling characteristics of neuronal/glial progenitor cells.
- The study employs electrophysiological techniques to identify specific potassium currents in AF-SCs and confirms that histamine can influence calcium dynamics and potassium current activation in these cells.
Ellagic acid-protein nano-complex inhibits tumor growth by reducing the intratumor bacteria and inhibiting histamine production.
Biomaterials
December 2024
Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, China. Electronic address:
In recent years, there has been growing interest in understanding the role of bacteria within tumors and their potential as targets for cancer therapy. In this work, we developed an ellagic acid (EA) - endogenous protein (eP) nanocomposite (eP-EA) to target tumors by EPR (enhanced permeability and retention), kill bacteria within tumors to regulate anti-tumor immune responses. The potential mechanism of eP-EA treatment is associated with the reduced abundance and diversity of microorganisms within the tumor, culminating with an altered metabolism within the Tumor microenvironment (TME).
View Article and Find Full Text PDFNovel Insights on the Biology and Immunological Effects of Histamine: A Road Map for Allergists and Mast Cell Biologists.
J Allergy Clin Immunol
December 2024
Institute of Allergology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology, Berlin, Germany. Electronic address:
Histamine (CHN, molecular weight 111.15 g/mol) is a well-studied endogenous biogenic amine composed of an imidazole ring attached to an ethylamine side chain. It has a limited half-life of a few minutes within tissues and in circulation.
View Article and Find Full Text PDFNeuronal substance P-driven MRGPRX2-dependent mast cell degranulation products differentially promote vascular permeability.
Front Immunol
December 2024
Department of Science of Allergy and Inflammation, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Mas-related G protein-coupled receptor b2 (Mrgprb2) binding to its cationic endogenous and exogenous ligands induces mast cell degranulation and promotes inflammation in mice. However, the physiological roles of its human homologue MRGPRX2 remain unclear. Here we aimed to elucidate the mechanisms by which MRGPRX2 regulates vascular permeability, and generated MRGPRX2 knock-in (MRGPRX2-KI) and Mrgprb2 knockout (Mrgprb2-KO) mice.
View Article and Find Full Text PDFPrevalence of Migraine Headache among Patients with Allergic Rhinitis in a Tertiary Care Hospital, Puducherry.
Indian J Otolaryngol Head Neck Surg
October 2024
Department of Otorhinolaryngology, SVMCH&RC, Ariyur, Puducherry, India.
Allergic rhinitis is one of the most common and undertreated diseases in the world. In recent times, there has been increased development of non-sinus headaches among patients with allergic rhinitis. Various common endogenous molecules such as nitric oxide, calcitonin gene-related peptide, and histamine have been implicated in the development of migraines, which leads to the development of migraines among allergic rhinitis patients.
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