NDLI: Polychlorinated Biphenyls PCB 153 and PCB 126 Impair the Glutamate–Nitric Oxide–cGMP Pathway in Cerebellar Neurons in Culture by Different Mechanisms

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Polychlorinated Biphenyls PCB 153 and PCB 126 Impair the Glutamate–Nitric Oxide–cGMP Pathway in Cerebellar Neurons in Culture by Different Mechanisms

Content Provider	Springer Nature Link
Author	Llansola, Marta Piedrafita, Blanca Rodrigo, Regina Montoliu, Carmina Felipo, Vicente
Copyright Year	2009
Abstract	Polychlorinated biphenyls (PCBs) are persistent organic pollutants present in human blood and milk. Exposure to PCBs during pregnancy and lactation leads to cognitive impairment in children. Perinatal exposure to PCB 153 or PCB 126 impairs the glutamate–nitric oxide–cGMP pathway in cerebellum in vivo and learning ability in adult rats. The aims of this work were: (1) to assess whether long-term exposure of primary cultures of cerebellar neurons to PCB 153 or PCB 126 reproduces the impairment in the function of the glutamate–nitric oxide–cGMP pathway found in rat cerebellum in vivo; (2) to provide some insight on the steps of the pathway affected by these PCBs; (3) to assess whether the mechanisms of interference of the pathway are different for PCB 126 and PCB 153. Both PCB 153 and PCB 126 increase basal levels of cGMP by different mechanisms. PCB 126 increases the amount of soluble guanylate cyclase while PCB 153 does not. PCB 153 reduces the amount of calmodulin while PCB 126 does not. Also both PCBs impair the function of the glutamate–nitric oxide–cGMP pathway by different mechanisms, PCB 153 impairs nitric oxide-induced activation of soluble guanylate cyclase and increase in cGMP while PCB 126 does not. PCB 126 reduces NMDA-induced increase in calcium while PCB 153 does not. When PCB 153 and PCB 126 exhibit the same effect, PCB 126 was more potent than PCB 153, as occurs in vivo.
Starting Page	97
Ending Page	105
Page Count	9
File Format	PDF
ISSN	10298428
Journal	Neurotoxicity Research
Volume Number	16
Issue Number	2
e-ISSN	14763524
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-04-29
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	PCBs NMDA Cerebellum cGMP Learning Neurobiology Pharmacology/Toxicology Neurochemistry Neurology Pharmaceutical Sciences/Technology Neurosciences
Content Type	Text
Resource Type	Article
Subject	Neuroscience Toxicology

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Polychlorinated Biphenyls PCB 153 and PCB 126 Impair the Glutamate–Nitric Oxide–cGMP Pathway in Cerebellar Neurons in Culture by Different Mechanisms