 - Acute spinal cord injury paraplegic and tetraplegic patients with confirmed classification of ASIA A C5 lesion T12; 4-14 days post-injury i.e. study drug treatment must begin 4-14 days post injury for paraplegic patients and for those tetraplegic patients who do not require artificial respiration at time of treatment initiation within the 4-14 days time interval. In those tetraplegic patients who still require artificial respiration in the 4-14 days time interval treatment can be initiated up to 60 days post-injury as soon as the patient is weaned off the respiratory machine. 