Impaired learning and memory in CD38 null mutant mice

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Abstract

CD38 is an enzyme that catalyzes the formation of cyclic ADP ribose and nicotinic acid adenine dinucleotide phosphate, both of which are involved in the mobilization of Ca 2+ from intracellular stores. Recently, CD38 has been shown to regulate oxytocin release from hypothalamic neurons. Importantly, CD38 mutations are associated with autism spectrum disorders (ASD) and CD38 knockout (CD38 -/- ) mice display ASD-like behavioral phenotypes including deficient parental behavior and poor social recognition memory. Although ASD and learning deficits commonly co-occur, the role of CD38 in learning and memory has not been investigated. We report that CD38 -/- mice show deficits in various learning and memory tasks such as the Morris water maze, contextual fear conditioning, and the object recognition test. However, either long-term potentiation or long-term depression is not impaired in the hippocampus of CD38 -/- mice. Our results provide convincing evidence that CD38 -/- mice show deficits in various learning and memory tasks including spatial and non-spatial memory tasks. Our data demonstrate that CD38 is critical for regulating hippocampus-dependent learning and memory without modulating synaptic plasticity.

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Kim, S., Kim, T. H., Lee, H. R., Jang, E. H., Ryu, H. H., Kang, M., … Kaang, B. K. (2016). Impaired learning and memory in CD38 null mutant mice. Molecular Brain, 9(1). https://doi.org/10.1186/s13041-016-0195-5

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