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The uptake of H-3-5HT by JAR cells occurs exclusively through SERT.

Women's Health Weekly

| July 03, 2003 | COPYRIGHT 2003 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

2003 JUL 3 - (NewsRx.com & NewsRx.net) -- The uptake of H-3-5HT by JAR cells occurs exclusively through SERT.

According to a study from Portugal, "The aim of this work was to characterize the uptake of 1-methyl-4-phenylpyridinium (MPP) in the JAR human choriocarcinoma cell line.

"As JAR cells, as well as the placenta, express the neuronal serotonin transporter (SERT), a comparison between the uptake of H-3-MPP+ and H-3-serotonin (H-3-5HT) was made," wrote F. Martel and colleagues, Faculty of Medicine, Department of Biochemistry.

"Specific uptake of H-3-MPP+ (0.2 microM) was temperature-, Na+- and potential-dependent. 5HT and MPP+ reduced H-3-MPP+ specific uptake (for 5HT, its IC50 was found to be 4 microM). The SERT inhibitors desipramine and fluoxetine also inhibited H-3-MPP+ specific uptake (with IC50S of 189 and 0.92 microM, respectively)," the researchers wrote.

"The inhibitors of the extraneuronal monoamine transporter (EMT) and of the organic cation transporter type 2 (OCT2), corticosterone and decynium22, had no effect on H-3-MPP+ specific uptake, but cyanine863 concentration-dependently reduced it (with an IC50 of 23 microM).

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Source: HighBeam Research, The uptake of H-3-5HT by JAR cells occurs exclusively through SERT.

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