Aging is a multifactorial process involving many steps including senescence. The immune system plays a critical role in aging where chronic inflammation and senescence has been shown to be detrimental. Natural killer (NK) cells are the predominant innate lymphocyte subset that mediate various responses to include surveillance and elimination of senescent cells. Here, we use autologous propagated and activated NK (aNK) cells from 5 patients to demonstrate that aNK cells decrease senescent cells and immunosenescence in humans based on markers p16 and β-galactosidase. In addition, inflammatory cytokine panel data suggest a role for removal of immunosenescence to reduce the aging-related inflammatory response.
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http://dx.doi.org/10.1016/j.bbrep.2022.101380 | DOI Listing |
Science
January 2025
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel.
Caspase family proteases and Toll/interleukin-1 receptor (TIR)-domain proteins have central roles in innate immunity and regulated cell death in humans. We describe a bacterial immune system comprising both a caspase-like protease and a TIR-domain protein. We found that the TIR protein, once it recognizes phage invasion, produces the previously unknown immune signaling molecule adenosine 5'-diphosphate-cyclo[N7:1'']-ribose (N7-cADPR).
View Article and Find Full Text PDFChaos
January 2025
Institut de Neurosciences des Systèmes, Aix-Marseille University, INSERM, Marseille 13005, France.
Abdom Radiol (NY)
January 2025
AGH University of Krakow, Krakow, Poland.
Purpose: Shear wave elastography (SWE) provides a means for adding information about the mechanical properties of tissues to a diagnostic ultrasound examination. It is important to understand the physics and methods by which the measurements are made to aid interpretation of the results as they relate to disease processes.
Methods: The components of how ultrasound is used to generate shear waves and make measurements of the induced motion are reviewed.
ACS Nano
January 2025
Nanomedicine Center, The Great Bay Area National Institute for Nanotechnology Innovation, 136 Kaiyuan Avenue, Guangzhou 510700, China.
The neurological implications of micro- and nanoplastic exposure have recently come under scrutiny due to the environmental prevalence of these synthetic materials. Parkinson's disease (PD) is a major neurological disorder clinically characterized by intracellular Lewy-body inclusions and dopaminergic neuronal death. These pathological hallmarks of PD, according to Braak's hypothesis, are mediated by the afferent propagation of α synuclein (αS) via the enteric nervous system, or the so-called gut-brain axis.
View Article and Find Full Text PDFNeuropharmacology
January 2025
Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, 78229, USA. Electronic address:
Kappa opioid receptors (KOR) expressed by peripheral pain-sensing neurons (nociceptors) are a promising target for development of effective and safer analgesics for inflammatory pain that are devoid of central nervous system adverse effects. Here we sought to delineate the signaling pathways that underlie peripheral KOR-mediated antinociception in adult male and female Sprague-Dawley rats. In an inflammatory model of pain, local intraplantar (i.
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