Medicine for treating nerves damage and preparation method thereof
A technology for the treatment of drugs and nerve damage, applied in the field of biomedicine, can solve the problems of lack of living environment, limited curative effect and poor curative effect at the damaged site
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Embodiment 1
[0020] Example 1: Fresh spinal cord within 30 minutes from human embryos was washed repeatedly with 1640 or 199 culture medium, cut into ganglia of about 1 mm, cultured in a 37°C incubator for 48 hours, and cobra venom was added for nerve growth After 8 days of co-cultivation of factor NGF and culture medium, the culture medium is a mixed culture medium of 1640 or 199 and 15% newborn calf serum, which accounts for 85% by weight, and is additionally added with penicillin 100 units / ml and streptomycin 100 μg / ml , The culture medium is maintained at pH 7.0. Finally, the cell content in the co-cultured combination drug is not less than 400×10 4 Pieces / ml~600×10 4 Pieces / ml, the content of living cells is not less than 85%, and the NGF is not less than 2500 to 5000 units. Frozen storage and passage. The cryopreserved cells were resuscitated before the operation and implanted in the pia mater of the spinal cord at the injury site.
Embodiment 2
[0021] Example 2: A fresh spinal cord was removed from the body of a golden monkey, washed repeatedly with 1640 or 199 culture medium within 30 minutes, cut into ganglia of about 1 mm, cultured in a 37°C incubator for 48 hours, and added to the mouse submandibular gland After 8 days of co-cultivation of nerve growth factor NGF and culture medium, the culture medium is a mixed culture medium of 1640 or 199 and 15% newborn calf serum, which accounts for 85% by weight, and is additionally added with penicillin 100 units / ml and streptomycin 100 μg / ml, the culture medium is maintained at pH 7.0. Finally, the cell content in the co-cultured combination drug is not less than 400×10 4 Pieces / ml~600×10 4 Pieces / ml, the content of living cells is not less than 85%, and the NGF is not less than 2500 to 5000 units. Frozen storage and passage. The cryopreserved cells were resuscitated before surgery and implanted into the pia mater of the spinal cord of the golden monkey. The measurement resu...
Embodiment 3
[0022] Example 3: Remove the fresh spinal cord from the mouse body, wash it repeatedly with 1640 or 199 culture medium within 30 minutes, cut it into ganglia of about 1 mm, culture it in a 37°C incubator for 48 hours, add the cobra snake venom nerve After the growth factor NGF and the culture solution were co-cultured for 8 days, the culture solution was a mixed culture solution of 85% by weight of 1640 or 199 and 15% of newborn calf serum, and added penicillin 100 units / ml and streptomycin 100 μg / ml, the culture medium is kept at pH 7.0. Finally, the cell content in the co-cultured combination drug is not less than 400×10 4 Pieces / ml~600×10 4 Pieces / ml, the content of living cells is not less than 85%, and the NGF is not less than 2500 to 5000 units. Frozen storage and passage. The cryopreserved cells were resuscitated before the operation and implanted around the sciatic nerve injured by the clamp. The results of the pain recovery measurement of the mice are shown in Table 2.
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