Results 41 to 50 of about 18,919 (201)

Stiffening of the nucleus pulposus upon axial loading of the intervertebral disc: An experimental in situ study

JOR Spine, 2018
Mechanical loading is inherently related to the function and degeneration of the intervertebral disc. We present a series of experiments aimed at measuring the effect of a loading/unloading cycle of the intervertebral disc on the mechanical properties of
Steven V. Beekmans, Kaj S. Emanuel, Theodoor H. Smit, Davide Iannuzzi   +3 more
doaj   +1 more source

The tandem-random transition of cellular patterning: proposed roles of N-cadherin-based orientational cell adhesions in the development, maintenance, and degeneration of the nucleus pulposus. [PDF]

Biol Rev Camb Philos Soc
ABSTRACT Intervertebral disc degeneration (IDD) can contribute to lower back and neck pain. In IDD, the most affected component of the intervertebral disc is the nucleus pulposus (NP). Derived from the notochord, where cells are organized into a tandem configuration, young NP cells cluster in three‐dimensional (3D) networks embedded in a gelatinous ...
Wei X, Vo N, Sowa GA.
europepmc   +2 more sources

Senescent Synovial Intimal Fibroblasts Aggravate Osteoarthritis by Regulating Macrophage Polarization and Chondrocyte Phenotype Through ANGPTL4‐α5β1 Axis

Advanced Science, EarlyView.
Senescent synovial intimal fibroblasts (SIF) are identified as key drivers of osteoarthritis. They promote M1 macrophage polarization and cartilage degeneration via the ANGPTL4–α5β1 axis, regulated by transcription factors EGR1 and ATF3. Pharmacological inhibition of this pathway alleviates disease, revealing SIF senescence as a promising therapeutic ...
Muhai Deng, Yunsheng Jiang, Zhiyu Chen, Kaiquan Chen, Na Cao, Yang Huang, Zhengxue Quan, Cheng Chen   +7 more
wiley   +1 more source

ROS‐Responsive Wedelolactone Hydrogel Promotes Intervertebral Disc Repair by Disrupting the NF‐κB–LCN2 Inflammatory Feedback Loop

Advanced Science, EarlyView.
A mechanically robust, ROS‐responsive hydrogel is engineered to treat intervertebral disc degeneration by targeting the NF‐κB–LCN2 inflammatory feedback loop. By delivering wedelolactone specifically within oxidative niches, this system disrupts macrophage–disc cell crosstalk.
Zimei Wu, Yan Xu, Lang Qin, Zemin Ling, Yingjie Mai, Xiong Tian Guo, Jiajia Chen, Leping Yan, Lin Wang, Liming Bian, Fuxin Wei   +10 more
wiley   +1 more source

Poly-3-hydroxybutyrate-co-3-hydroxyvalerate(PHBV)-Polyethylene glycol 20k(PEG20k) as a promising delivery system for PT2399 in the treatment of disc degeneration

Journal of Biological Engineering
Disc degeneration often leads to a highly prevalent symptom known as low back pain. Healthy nucleus pulposus tissue exhibited a hypoxic environment devoid of blood vessels, while degenerated nucleus pulposus experienced hypoxic deterioration and the ...
Zhencong Li, Weilin Zhang, Shengbang Huang, Zhiwen Dai, Jinguo Liang, Qiulan Qiu, Siyuan Chen, Weixiong Guo, Zhongwei Wang, Jinsong Wei   +9 more
doaj   +1 more source

Development of a library of laminin-mimetic peptide hydrogels for control of nucleus pulposus cell behaviors [PDF]

, 2021
Julie E. Speer, Marcos N. Barcellona, Michael Y Lu, Zizhen Zha, Liufang Jing, Munish C. Gupta, Jacob M. Buchowski, Michael P. Kelly, Lori A. Setton   +8 more
openalex   +1 more source

Lipid Nanoparticles Delivering ClpP‐mRNA Suppress Pyroptosis and Senescence in Intervertebral Disc Degeneration via mTOR/BNIP3‐Activated Mitophagy

Rare Metals, EarlyView.
ABSTRACT Intervertebral disc degeneration (IDD) is a predominant cause of low back pain, significantly impacting quality of life. Mitochondrial fitness is essential in the progression of IDD, as it regulates cellular senescence and pyroptosis. This study investigates the role of mitochondrial caseinolytic protease P (ClpP) in alleviating senescence and
Kun Wang, Zhiqiang Wang, Tong Zhang, Shicheng Qiu, Guang Yang, Yanzheng Gao, Xiaofeng Lian, Xin Peng   +7 more
wiley   +1 more source

Mechanosensitive Cell‐Laden Shape‐Memory Scaffolds Engineered via Cryogelation

Small Structures, EarlyView.
GelMA‐based shape‐memory scaffolds encapsulating human adipose‐derived stem cells are fabricated via cryogelation, showing rapid recovery and high cell viability. Under cyclic compression, they promoted mechanotransduction gene expression, and composite formulations (collagen/GelMA, dECM/GelMA) retained robust shape‐memory, highlighting their promise ...
JaeYoon Lee, ByungJoon Choi, Hanjun Hwangbo, GaEun Heo, GeunHyung Kim   +4 more
wiley   +1 more source

Axial length, myopia progression, and myopic maculopathy in Stickler syndrome

Acta Ophthalmologica, EarlyView.
Abstract Purpose We lack knowledge on the potentially progressive nature of and the prevalence of complications to myopia as a characteristic trait of Stickler syndrome. Methods This cross‐sectional study combines ophthalmic examination and medical record data on Danish patients with genetically confirmed Stickler syndrome type 1 (COL2A1) and type 2 ...
Kirstine B. Boysen, Mette Bertelsen, Nanna D. Rendtorff, Stense Farholt, Line Kessel   +4 more
wiley   +1 more source

Intervertebral Disc Degeneration and Regeneration: New Molecular Mechanisms and Therapeutics

Cells
The intervertebral disc (IVD) is a soft tissue that constitutes the spinal column together with the vertebrae, and consists of the central nucleus pulposus (gelatinous tissue) and the annulus fibrosus (rich in fibrous tissue) that surrounds the nucleus ...
Hideki Sudo
doaj   +1 more source