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- W2011656189 abstract "—We have investigated the feasibility of using gene therapy to attenuate the age-related decline in striatal dopamine D2 receptors (D2R) associated with reduced motor control. To this end, we have constructed an adenoviral vector containing the cDNA for the rat D2R. When injected into HeLa and HS24 cells in vitro, the vector induced an abundant message for D2R, as demonstrated by Northern analysis, and produced a membrane-bound protein capable of binding a D2R ligand, [3H]spiperone. When injected into rat striatum in vivo, the vector produced a marked increase in D2R near the site of injection, as evidenced by increased [3H]spiperone binding as well as by another more specific ligand, [125I]iodosulpride. The D2R produced in the striatum were functional, as evidenced by rotational behavior induced by a subcutaneous injection of the dopamine agonist, apomorphine. However, we did not observe any significant improvement in motor performance during preliminary experiments in which aged rats received bilateral striatal injections of the vector. In young rats, vector-induced expression of D2R in striatum was increased markedly three to five days after infection, but then declined to baseline levels by day 21. Loss of expression in aged rats proceeded at a somewhat lower rate. Because of the loss of expression and lack of significant performance enhancement in aged rats following vector injection into the striatum, we are now pursuing other strategies. These include functional assessment of the current vector in D2R null mutant mice as well as construction of new vectors that may yield more long-term expression." @default.
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- W2011656189 title "Application of gene therapy to treat age-related loss of dopamine D2 receptor" @default.
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- W2011656189 doi "https://doi.org/10.1016/s0531-5565(98)00043-6" @default.
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