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Scratching promotes allergic inflammation and host defense via neurogenic mast cell activation.
Science
January 2025
Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, USA.
Itch is a dominant symptom in dermatitis, and scratching promotes cutaneous inflammation, thereby worsening disease. However, the mechanisms through which scratching exacerbates inflammation and whether scratching provides benefit to the host are largely unknown. We found that scratching was required for skin inflammation in mouse models dependent on FcεRI-mediated mast cell activation.
View Article and Find Full Text PDFSodium butyrate regulates macrophage polarization by TGR5/β-arrestin2 in vitro.
Mol Med
January 2025
Department of Critical Care Medicine, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuchang, Wuhan, 430060, Hubei, China.
Background: Macrophages play an important role in the pathogenesis of ulcerative colitis (UC). We will explore the effects of sodium butyrate (SB) on macrophage function.
Methods: The targets of butyric acid were identified using SwissTargetPrediction database and surface plasmon resonance (SPR).
Metabolically stable apelin analogs: development and functional role in water balance and cardiovascular function.
Clin Sci (Lond)
January 2025
Center for Interdisciplinary Research in Biology, College de France, Institut National de la Santé et de la Recherche Médicale, Paris, France.
Apelin, a (neuro) vasoactive peptide, plays a prominent role in controlling water balance and cardiovascular functions. Apelin and its receptor co-localize with vasopressin in magnocellular vasopressinergic neurons. Apelin receptors (Apelin-Rs) are also expressed in the collecting ducts of the kidney, where vasopressin type 2 receptors are also present.
View Article and Find Full Text PDFStructure and function of a near fully-activated intermediate GPCR-Gαβγ complex.
Nat Commun
January 2025
Department of Molecular Biosciences, University of South Florida, 4202 E Fowler Ave, Tampa, FL, 33620, USA.
Unraveling the signaling roles of intermediate complexes is pivotal for G protein-coupled receptor (GPCR) drug development. Despite hundreds of GPCR-Gαβγ structures, these snapshots primarily capture the fully activated complex. Consequently, the functions of intermediate GPCR-G protein complexes remain elusive.
View Article and Find Full Text PDFLobaric acid suppresses the stemness potential of colorectal cancer cells through mTOR/AKT.
Biofactors
January 2025
College of Pharmacy, Sunchon National University, Sunchon, Republic of Korea.
Stereocaulon alpinum has been found to have potential pharmaceutical properties due to the presence of secondary metabolites such as usnic acid, atranorin, and lobaric acid (LA) which have anticancer activity. On the other hand, the effect of LA on the stemness potential of colorectal cancer (CRC) cells remains unexplored, and has not yet been thoroughly investigated. In this study, we examined the inhibitory activity of LA from Stereocaulon alpinum against the stemness potential of CRC cells and investigated the possible underlying mechanisms.
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