Promotion of structural plasticity in area V2 of visual cortex prevents against object recognition memory deficits in aging and Alzheimer's disease rodents  

作　　者：Irene Navarro-Lobato Mariam Masmudi-Martín Manuel F.López-Aranda Juan F.López-Téllez Gloria Delgado Pablo Granados-Durán Celia Gaona-Romero Marta Carretero-Rey Sinforiano Posadas María E.Quiros-Ortega Zafar U.Khan 

机构地区：[1]Laboratory of Neurobiology,Centro de Investigaciones Médico Sanitarias(CIMES),University of Malaga,Malaga,Spain [2]Department of Medicine,Faculty of Medicine,University of Malaga,Malaga,Spain [3]Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas(CIBERNED),Institute of Health Carlos III,Madrid,Spain [4]the Donders Institute for Brain Cognition and Behaviour,Radboud University,Nijmegen,The Netherlands [5]the Brain Metastasis Group,National Cancer Research Centre(CNIO),Madrid,Spain [6]the Department of Neurobiology,University of California-Los Angeles,Los Angeles,CA,USA

出　　处：《Neural Regeneration Research》2024年第8期1835-1841,共7页中国神经再生研究（英文版）

基　　金：supported by grants from the Ministerio de Economia y Competitividad(BFU2013-43458-R);Junta de Andalucia(P12-CTS-1694 and Proyexcel-00422)to ZUK。

摘　　要：Memory deficit,which is often associated with aging and many psychiatric,neurological,and neurodegenerative diseases,has been a challenging issue for treatment.Up till now,all potential drug candidates have failed to produce satisfa ctory effects.Therefore,in the search for a solution,we found that a treatment with the gene corresponding to the RGS14414protein in visual area V2,a brain area connected with brain circuits of the ventral stream and the medial temporal lobe,which is crucial for object recognition memory(ORM),can induce enhancement of ORM.In this study,we demonstrated that the same treatment with RGS14414in visual area V2,which is relatively unaffected in neurodegenerative diseases such as Alzheimer s disease,produced longlasting enhancement of ORM in young animals and prevent ORM deficits in rodent models of aging and Alzheimer’s disease.Furthermore,we found that the prevention of memory deficits was mediated through the upregulation of neuronal arbo rization and spine density,as well as an increase in brain-derived neurotrophic factor(BDNF).A knockdown of BDNF gene in RGS14414-treated aging rats and Alzheimer s disease model mice caused complete loss in the upregulation of neuronal structural plasticity and in the prevention of ORM deficits.These findings suggest that BDNF-mediated neuronal structural plasticity in area V2 is crucial in the prevention of memory deficits in RGS14414-treated rodent models of aging and Alzheimer’s disease.Therefore,our findings of RGS14414gene-mediated activation of neuronal circuits in visual area V2 have therapeutic relevance in the treatment of memory deficits.

关 键 词：behavioral performance brain-derived neurotrophic factor cognitive dysfunction episodic memory memory circuit activation memory deficits memory enhancement object recognition memory prevention of memory loss regulator of G protein signaling 

分 类 号：R749.16[医药卫生—神经病学与精神病学]