Asthma and chronic obstructive pulmonary disease (COPD) are both highly prevalent, chronic inflammatory lung diseases that lead to significant morbidity and mortality. Matrix metalloproteinases (MMPs) are extracellular matrix degrading enzymes that play a critical role in normal development and physiological tissue remodeling and repair. In addition, they play an important role in the regulation of the kinetics and function of inflammatory cells. There is increasing evidence that MMPs are involved in the pathogenesis of both asthma and COPD, and several MMPs are possible therapeutic targets in these common chronic airway diseases.
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http://dx.doi.org/10.1016/j.coph.2004.12.005 | DOI Listing |
Background: Overexpression of tear matrix metalloproteinases-9 (MMP-9) on the ocular surface tissues has been reported to result in ocular surface damage. MMP-9 levels in tears have been listed as one of many tools for confirming dry eye disease (DED).
Objective: This investigation aimed to compare MMP-9 levels and ocular surface parameters in diabetic patients with and without DED.
Tissue Cell
December 2024
Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China. Electronic address:
Age-related diseases are often linked to chronic inflammation. Senescent cells secrete inflammatory cytokines, chemokines and matrix metalloproteinases, collectively referred to as the senescence-associated secretory phenotype (SASP). The current study discovered that aging leads to the accumulation of senescent tendon stem/progenitor cells (TSPCs) in tendon tissue, resulting in the development of a SASP.
View Article and Find Full Text PDFNat Nanotechnol
January 2025
Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech College of Engineering and Emory School of Medicine, Atlanta, GA, USA.
The forward design of biosensors that implement Boolean logic to improve detection precision primarily relies on programming genetic components to control transcriptional responses. However, cell- and gene-free nanomaterials programmed with logical functions may present lower barriers for clinical translation. Here we report the design of activity-based nanosensors that implement AND-gate logic without genetic parts via bi-labile cyclic peptides.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Background: Alzheimer's disease (AD) is a complex neurodegenerative disorder characterized by hallmark pathologies that affect many brain regions, including the cellular microenvironment with the hippocampus, ultimately leading to profound deficits in cognition. Surprising recent work has shown that factors in the systemic environment regulate the hippocampal cellular niche; age-associated blood-borne factors exacerbate brain aging phenotypes, whereas youth-associated blood-borne factors, including tissue inhibitor of metalloproteinases 2 (TIMP2), reverse or ameliorate features of brain aging. As aging serves as the major risk factor for AD, and recent work shows that systemic factors can regulate AD pathology, we sought to characterize mechanisms by which the systemic environment regulates CNS phenotypes relevant to AD pathology through changes in neuroinflammation.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Indiana University School of Medicine, Stark Neurosciences Research Institute, Department of Neurology, Indianapolis, IN, USA.
Anti-amyloid immunotherapy holds great promise for our patients and their families as the first disease-modifying therapy for the treatment of Alzheimer's disease (AD) to be approved. Positive clinical trials for lecanamab and donanemab showed significant and rapid lowering of brain amyloid burden and a significant slowing of cognitive decline. Amyloid-related imaging abnormalities (ARIA) in the form of vasogenic edema (ARIA-E) and micro - and macro- hemorrhages (ARIA-H) remain the major obstacle to broad use of these agents.
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