PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “NITROGEN DIOXIDE”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 739 records · Page 41Linked to original sources
PubMed1997

beta-Carotene effectively scavenges toxic nitrogen oxides: nitrogen dioxide and peroxynitrous acid.

beta-Carotene absorbed 2 equimolar amounts of NO2 accompanying the complete destruction of beta-carotene. Electron spin resonance study using 2-phenyl-4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl revealed that no significant amounts of NO were released by the interaction. Nitrogen atoms derived from NO2 were tightly bound to the beta-carotene molecules. Destruction of beta-carotene was inhibited little by alpha-tocopherol and polyunsaturated fatty esters, and slightly by ascorbyl palmitate, indicating that beta-carotene was a more effective scavenger of NO2. ONOOH/ONOO- and 3-morpholinosydononimine similarly destroyed beta-carotene. The results suggest that beta-carotene contributes to the prevention of cytotoxicity and genotoxicity of NO2 and ONOOH/ONOO- derived from NO.

Amiloride↗