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Administration of intramuscular AAV-BDNF and intranasal AAV-TrkB promotes neurological recovery via enhancing corticospinal synaptic connections in stroke rats
In this study, we performed non-invasive treatment methods focused on intramuscular injection into stroke-injured forelimb muscles, or intranasal administration using adeno-associated virus (AAV) vectors carrying genes encoding BDNF or TrkB. In a permanent rat middle cerebral artery occlusion (MCAO) model, we assessed the effects of combination therapy with AAV-BDNF and AAV-TrkB on motor functional recovery and synaptic plasticity of the corticospinal connections. Our results showed that BDNF or TrkB gene transduced in the spinal anterior horn neurons and cerebral cortical neurons. Compared to AAV vector treatment alone, b...
Source: Experimental Neurology - October 2, 2022 Category: Neurology Authors: Jing Wang Yichen Cai Jingyi Sun Hua Feng Xiaoyu Zhu Qian Chen Feng Gao Qingbin Ni Leilei Mao Mingfeng Yang Baoliang Sun Source Type: research

Peripherally delivered Adeno-associated viral vectors for spinal cord injury repair
In conclusion, in the future, minimally invasive administration of AAVs may improve recovery after SCI with minimal side effects.PMID:34896114 | DOI:10.1016/j.expneurol.2021.113945
Source: Experimental Neurology - December 13, 2021 Category: Neurology Authors: Jared D Sydney-Smith Aline B Spejo Philippa M Warren Lawrence D F Moon Source Type: research

Presynaptic Caytaxin prevents apoptosis via deactivating DAPK1 in the acute phase of cerebral ischemic stroke.
Abstract Death-associated protein kinase 1 (DAPK1) is a key protein that mediates neuronal death in ischemic stroke. Although the substrates of DAPK1 and molecular signal in stroke have been gradually discovered, the modulation of DAPK1 itself is still unclear. Here we first reveal that Caytaxin, a brain-specific member of BCL2/adenovirus E1B -interacting protein (BNIP-2), increases and interacts with DAPK1 as early as 2 h after middle cerebral artery occlusion (MCAO) in the penumbra area of mouse brain. Furthermore, Caytaxin binds to DAPK1 at the presynaptic site and inhibits DAPK1 catalytic activity. Silencing...
Source: Experimental Neurology - April 7, 2020 Category: Neurology Authors: Wang S, Chen K, Yu J, Wang X, Li Q, Lv F, Shen H, Pei L Tags: Exp Neurol Source Type: research

Molecular profile of the rat peri-infarct region four days after stroke: Study with MANF.
In this study, we examine the molecular profile of the peri-infarct region on post-stroke day four, time when reparative processes are ongoing. We used a multiomics approach, involving RNA sequencing, and mass spectrometry-based proteomics and metabolomics to characterize molecular changes in the peri-infarct region. We also took advantage of our previously developed method to express transgenes in the peri-infarct region where self-complementary adeno-associated virus (AAV) vectors were injected into the brain parenchyma on post-stroke day 2. We have previously used this method to show that mesencephalic astrocyte-derived...
Source: Experimental Neurology - March 26, 2020 Category: Neurology Authors: Teppo J, Vaikkinen A, Stratoulias V, Mätlik K, Anttila JE, Smolander OP, Pöhö P, Harvey BK, Kostiainen R, Airavaara M Tags: Exp Neurol Source Type: research

OCT4B-190 protects against ischemic stroke by modulating GSK-3 β/HDAC6.
OCT4B-190 protects against ischemic stroke by modulating GSK-3β/HDAC6. Exp Neurol. 2019 Apr 11;: Authors: Chen Y, Wu Z, Zhu X, Zhang M, Zang X, Li X, Xu Y Abstract OCT4 is a key regulator in maintaining the pluripotency and self-renewal of embryonic stem cells (ESCs). Human OCT4 gene has three mRNA isoforms, termed OCT4A, OCT4B and OCT4B1. The 190-amino-acid protein isoform (OCT4B-190) is one of the major products of OCT4B mRNA, the biological function of which is still not well defined. Recent evidence suggests that OCT4B-190 may function in the cellular stress response. The glycogen synthase kinase...
Source: Experimental Neurology - April 10, 2019 Category: Neurology Authors: Chen Y, Wu Z, Zhu X, Zhang M, Zang X, Li X, Xu Y Tags: Exp Neurol Source Type: research