Neurogenic inflammation

Source: Wikipedia, the free encyclopedia.

Neurogenic inflammation is

endothelin-3 (ET-3).[1][2][3] In such neurons, release of these pro-inflammatory mediators is thought to be triggered by the activation of ion channels that are the principal detectors of noxious environmental stimuli. In particular, the heat/capsaicin receptor TRPV1[4] and the irritant/wasabi receptor TRPA1.[5][6][7] TRPA1 channels stimulated by lipopolysaccharide (LPS) may also cause acute neurogenic inflammation.[8]
Once released, these neuropeptides induce the release of histamine from adjacent mast cells. In turn, histamine evokes the release of substance P and calcitonin gene-related peptide; thus, a bidirectional link between histamine and neuropeptides in neurogenic inflammation is established.[9]

Neurogenic inflammation appears to play an important role in the

. [17][18][19]

In

CGRP.[20][21] leading to a "sterile neurogenic inflammation."[22]

Prevention

Interleukin-1 beta (IL-1β), followed by exacerbated bone loss. These and other data suggest that deficient dietary magnesium intake, even at levels not uncommon in humans, may trigger neurogenic inflammation and lead to an increased risk of osteoporosis.[24]

Treatment

In 2018, three CGRP blockers were approved by the

FDA
for the prevention of migraine: erenumab; fremanezumab; and galcanezumab.

The calcitonin gene-related peptide (CGRP) is a therapeutic target in migraine because of its hypothesized role in mediating trigeminovascular pain transmission and the vasodilatory component of neurogenic inflammation (see "Pathophysiology, clinical manifestations, and diagnosis of migraine in adults", section on 'Role of calcitonin gene-related peptide'). In 2018, the US Food and Drug Administration (FDA) approved the CGRP antagonists erenumab [36], fremanezumab [37], and galcanezumab [38] for migraine prevention.
Smith, "Preventive treatment of migraine in adults" UpToDate 2019[25]

Additional CGRP blockers are progressing through clinical trials.[26]

Anticipating later

botox therapy for migraine, early work by Jancsó et al. found some success in treatment using denervation or pretreatment with capsaicin to prevent uncomfortable symptoms of neurogenic inflammation.[27]

A 2010 study of the treatment of migraine with CGRP blockers had shown promise for CGRP blockers.[28] In early trials, the first oral nonpeptide CGRP antagonist, MK-0974 (Telcagepant), was shown effective in the treatment of migraine attacks,[29] but elevated liver enzymes in two participants were found. Other therapies and other links in the neurogenic inflammatory pathway for interruption of disease are under study, including migraine therapies.[30]

Noting that botulinum toxin has been shown to have an effect on inhibiting neurogenic inflammation, and evidence suggesting the role of neurogenic inflammation in the pathogenesis of psoriasis,[14] the University of Minnesota has a pilot clinical trial underway to follow up on the observation that patients treated with botulinum toxin for dystonia had dramatic improvement in psoriasis.[31]

Astelin (

vasomotor rhinitis including rhinorrhea, nasal congestion, and post nasal drip in adults and children 12 years of age and older."[32][33]

Statins appear to "decrease expression of the proinflammatory neuropeptides calcitonin gene-related peptide and substance P in sensory neurons,"[34]
and so might be of use in treating diseases presenting with predominant neurogenic inflammation.

Research

In a 2012 article[35] in Nature Neuroscience Chiu et al. discuss the development of science related to neurogenic inflammation and provide a graphic[36] illustrating key discoveries leading toward the current understanding of neurogenic inflammation, its mechanisms, and the conditions caused by its disorder.

References

External links