ROCKVILLE, Md., Oct. 15, 2012 /PRNewswire/ --Neuralstem,    Inc. (NYSE MKT: CUR) announced that data on Neuralstem's    NSI-566 spinal cord-derived neural stem cell line in a rat    model of ischemic stroke was presented in a poster,    "Histopathological Assessment of Adult Ischemic Rat Brains    after 4 Weeks of Intracerebral Transplantation of NSI-566RSC    Cell Line," at The Society for Neurosciences Annual Meeting    (http://www.sfn.org/AM2012/). This    study was conducted independently in the laboratory of Dr.    Cesar Borlongan, who is the director at the Center of    Excellence for Aging and Brain Repair at the University of    South Florida College of Medicine. Post-mortem histology    was conducted in collaboration with Neuralstem. Rats that    suffered ischemic stroke by middle cerebral artery occlusion,    were transplanted 7 days post-stroke with increasing doses of    NSI-566 into the stroke area. The animals were followed    for safety and behavioral response for 56 days    post-transplantation. Researchers reported Saturday that    there was significant improvement in both motor and    neurological tests in the stem cell-treated rats. There were    significant dose-dependent differences in the behavioral    improvement across treatment groups at post-transplantation    periods, with the highest dose showing the most significant    improvement in both motor and neurological tests.    Similarly, there were significant differences in the behavioral    performance among treatment groups at post-transplantation    periods, with the most significant improvement in both motor    and neurological tests seen at day 56 post-transplantation.  
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    "This study was designed to evaluate the potential therapeutic    value of intracerbral dosing of human neural stem cells    (NSI-566, supplied by Neuralstem) in an animal model of adult    ischemic stroke," said Cesar V. Borlongan, Ph.D.,    University of South Florida College of Medicine, and the lead    study author. "The results are very clear. The recovery of    motor and neurological tests demonstrated by high-dose    transplanted stroke animals was significantly better throughout    the 56-day study period compared to vehicle-infused stroke    animals, or low-dosed animals. In addition, there was stable    improvement in the high-dose animals, and they showed a trend    of better improvement over time."  
    A separate poster, "Survival and Differentiation of Human    Neural Stem Cells (NSI-566RSC) After Grafting into    Ischemia-Injured Porcine Brain," was also presented on    Saturday. This study was independently carried out    by Dr. Martin Marsala and his colleagues. Dr. Marsala is    a professor and the head of the Neuroregeneration Laboratory at    University of California San Diego and also a member of the    Sanford Consortium for Regenerative Medicine. In this    study, the same stem cells were transplanted into the brains of    pigs that received an ischemic stroke on one side of the    brain. 8-9 weeks after the ischemic event, which models    chronic stroke in humans, feasibility and safety of escalating    cell doses and injections were assessed. Body    temperature, behavior, muscle tone and coordination, sensory    function, food consumption, defecation, and micturition were    monitored at least twice daily for the first 7 days, and once    weekly thereafter, until termination. Up to 12 million    cells in 25 cell injection deposits via 5 cannula penetrations    were shown to be safe, which closely mimics the intended    clinical route and method of delivery in future human clinical    trials. At 6 weeks post-transplantation, there were no    complications from the cell transplantation method or the    cells. All animals recovered and showed progressive    improvement with no distinction. All treated animals    showed effective engraftment and neuronal maturation with    extensive axonal projections. These data support the    application of NSI-566RSC cell line to be transplanted into a    chronic stage of previously ischemia-injured brain for    treatment of motor deficits resulting from stroke.  
    "Our study was designed to evaluate the potential value of    Neuralstem's cells in a chronic model of ischemic stroke and in    a species that allowed for the use of human scale    transplantation tools and dosing," said Martin Marsala, MD, at    the University of California at San Diego Medical School, and    the lead study author of the porcine study. "We have    demonstrated clearly that both the route of administration and    the cells are safe and well tolerated and that the cells    survived and differentiated into mature neurons in the host    brain tissue."  
    "We have demonstrated safety and efficacy of NSI-566RSC in a    subacute model of ischemic stroke in rats and feasibility    and safety in a chronic model of ischemic stroke in mini-pigs,"    said Karl Johe, PhD, Chairman of Neuralstem's Board of    Directors and Chief Scientific Officer. "Together, these two    studies demonstrate strong proof of principle data that our    NSI-566 cells are ready to go into humans to treat paralysis in    stroke patients."  
    Neuralstem has recently completed a Phase I trial testing the    safety of NSI-566 in the treatment of amyotrophic lateral    sclerosis (ALS or Lou Gehrig's disease) and has been approved    to initiate a human clinical trial in ischemic stroke in China,    through its subsidiary, Suzhou Neuralstem.  
    About Neuralstem  
    Neuralstem's patented technology enables the ability to produce    neural stem cells of the human brain and spinal cord in    commercial quantities, and the ability to control the    differentiation of these cells constitutively into mature,    physiologically relevant human neurons and glia. Neuralstem has    recently treated the last patient in an FDA-approved Phase I    safety clinical trial for amyotrophic lateral sclerosis (ALS),    often referred to as Lou Gehrig's disease, and has been awarded    orphan status designation by the FDA.  
    In addition to ALS, the company is also targeting major central    nervous system conditions with its NSI-566 cell therapy    platform, including spinal cord injury, ischemic stroke and    glioblastoma (brain cancer). The company has submitted an IND    (Investigational New Drug) application to the FDA for a Phase I    safety trial in spinal cord injury.  
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Significant Recovery Of Motor And Neurological Functions In Ischemic Stroke Rats With Neuralstem NSI-566 Cells