NDLI: Early-Life Exposure to Methylmercury in Wildtype and pdr-1/parkin Knockout C. elegans

Content Provider	Springer Nature Link
Author	Martinez Finley, Ebany J. Chakraborty, Sudipta Slaughter, James C. Aschner, Michael
Copyright Year	2013
Abstract	We examined the impact of early-life exposure to methylmercury (MeHg) on Caenorhabditis elegans (C. elegans) pdr-1 mutants, addressing gene-environment interactions. We tested the hypothesis that early-life exposure to MeHg and knockout (KO) of pdr-1 (mammalian: parkin/PARK2) exacerbates MeHg toxicity and damage to the dopaminergic (DAergic) system. pdr-1KO worms showed increased lethality and decreased lifespan following MeHg exposure. Mercury (Hg) content, measured with inductively coupled plasma-mass spectrometry was increased in pdr-1KO worms compared to wildtype (N2) controls. 2′7′ dichlorodihydrofluorescein diacetate assay revealed a significant increase in reactive oxygen species in both strains following MeHg exposure; however, while N2 worms showed an increase in skn-1 transcript levels following MeHg exposure, there was no difference in skn-1 induction in pdr-1KO worms. Dopamine-dependent behavioral analysis revealed an effect of MeHg on N2 wildtype worms, but no effect on pdr-1KO worms. Taken together, these results suggest that pdr-1KO worms are more sensitive to MeHg than wildtype worms, but MeHg does not exacerbate behavioral changes related to the absence of pdr-1.
Starting Page	1543
Ending Page	1552
Page Count	10
File Format	PDF
ISSN	03643190
Journal	Neurochemical Research
Volume Number	38
Issue Number	8
e-ISSN	15736903
Language	English
Publisher	Springer US
Publisher Date	2013-04-23
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Methylmercury Parkin Early-life exposure Dopamine Large amino acid transporter Neurosciences Neurochemistry Biochemistry Cell Biology Neurology
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry Cellular and Molecular Neuroscience

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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