Nickel particles are present in Crohn's disease tissue and exacerbate intestinal inflammation in IBD susceptible mice.
Biochem Biophys Res Commun
; 592: 74-80, 2022 02 12.
Article
in En
| MEDLINE
| ID: mdl-35032835
ABSTRACT
Crohn's disease is an inflammatory disease of the gut caused by a complex interplay among genetic, microbial, and environmental factors. The intestinal tract is constantly exposed to metals and other trace elements ingested as food. Synchrotron radiation-induced X-ray fluorescence spectroscopy and X-ray absorption fine structure analysis revealed the deposition of nickel particles within Crohn's disease tissue specimens. After nickel particle stimulation, THP-1 cells showed filopodia formation and autophagic vacuoles containing lipid bodies. Nickel particles precipitated colitis in mice bearing mutations of the IBD susceptibility protein A20/TNFAIP3. Nickel particles also exacerbated dextran sulfate sodium-induced colitis in mice harboring myeloid cell-specific Atg5 deficiency. These findings illustrate that nickel particle ingestion may worsen Crohn's disease by perturbing autophagic processes in the intestine, providing new insights into environmental factors in Crohn's disease pathogenesis.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Crohn Disease
/
Disease Progression
/
Inflammation
/
Intestines
/
Nickel
Limits:
Animals
/
Humans
Language:
En
Journal:
Biochem Biophys Res Commun
Year:
2022
Document type:
Article
Affiliation country:
Japan