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Pro-inflammatory cytokines such as IL-1β, IL-6, and TNF-α also trigger pathological pain. [1] While IL-1β is released by monocytes and macrophages, it is also present in nociceptive DRG neurons. IL-6 plays a role in neuronal reaction to an injury. TNF-α is a well known proinflammatory cytokine present in neurons and the glia.
As an example, the cytokine IL-1α is a DAMP that originates within the nucleus of the cell which, once released to the extracellular space, binds to the PRR IL-1R, which in turn initiates an inflammatory response to the trauma or pathogen that initiated the release of IL-1α. [3]
1] Factors involved in Inflammaging Aging leads to perturbations in cellular homeostasis leading to inflammaging that results in pro-inflammatory cytokine secretion. Inflammaging (also known as inflamm-aging or inflamm-ageing ) is a chronic, sterile, low-grade inflammation that develops with advanced age, in the absence of overt infection, and ...
Cytokines also play a role in anti-inflammatory pathways and are a possible therapeutic treatment for pathological pain from inflammation or peripheral nerve injury. [22] There are both pro-inflammatory and anti-inflammatory cytokines that regulate this [clarification needed] pathway.
The inflammasome was discovered by the team of Jürg Tschopp, at the University of Lausanne, in 2002. [17] [18] In 2002, it was first reported by Martinon et al. [17] that NLRP1 (NLR family PYD-containing 1) could assemble and oligomerize into a structure in vitro, which activated the caspase-1 cascade, thereby leading to the production of pro-inflammatory cytokines, including IL-1β and IL-18.
This classification is not strict; for example, CCL20 can act also as pro-inflammatory chemokine. [5] Inflammatory: these are formed under pathological conditions (on pro-inflammatory stimuli, such as IL-1, TNF-alpha, LPS, or viruses) and actively participate in the inflammatory response attracting immune cells to the site of inflammation.
Through its induction of proinflammatory cytokines, IL-1β and IL-18, it has been proposed that inhibition of inflammasome may also serve as an efficient therapeutic method. [55] The involvement of inflammasome has also been researched in several other diseases including experimental autoimmune encephalomyelitis (EAE), Alzheimer's and Parkinson ...
The inflammasome activates a different set of caspases as compared to apoptosis, for example, caspase-1/4/5 in humans and caspase-11 in mice. [3] These caspases contribute to the maturation and activation of the pro-inflammatory cytokines IL-1β and IL-18, as well as the pore-forming protein gasdermin D.