NDLI: Shell-bound iron dependant nitric oxide synthesis in encysted Artemia parthenogenetica embryos during hydrogen peroxide exposure

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Shell-bound iron dependant nitric oxide synthesis in encysted Artemia parthenogenetica embryos during hydrogen peroxide exposure

Content Provider	Springer Nature Link
Author	Veeramani, Sivaram Baskaralingam, Vaseeharan
Copyright Year	2011
Abstract	Artemia is a tiny marine crustacean, serves as an excellent tool in both basic and applied aspects of stress biology research. In the current manuscript, we report that Artemia parthenogenetica embryos (cysts), in diapause stage, undergo iron transition changes when exposed to chemical diapause deactivation stimulus (hydrogen peroxide). X-ray surface analysis of A. parthenogenetica embryos exposed to H2O2 showed significant transitional changes in iron, as seen in cyst cross-sections. Electron paramagnetic resonance study revealed that upon H2O2 exposure, increased nitric oxide (NO) production was observed in non-decapsulated cysts (ND), but not in decapsulated cysts (DC) (shell-removed cysts). Spin trapping studies also showed an increase in hydroxyl radical formation in NDs exposed to H2O2 through Fenton-like reaction. On the contrary, exposure of DCs to H2O2 did not induce hydroxyl radical formation. Taken together, results from the present study indicate a key role of cyst shell-bound iron and reactive oxygen species on successful diapause termination in eukaryotic extremophile animal model, such as Artemia.
Starting Page	1035
Ending Page	1044
Page Count	10
File Format	PDF
ISSN	09660844
Journal	BioMetals
Volume Number	24
Issue Number	6
e-ISSN	15728773
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-05-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Artemia parthenogenetica Diapause Hydrogen peroxide Nitric oxide Shell-bound Iron Microbiology Pharmacology/Toxicology Plant Physiology Medicine/Public Health Cell Biology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Biochemistry, Genetics and Molecular Biology Biomaterials Agricultural and Biological Sciences

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