FIELD: medicine.
SUBSTANCE: biocompatible implant (BI) made of magnetic material in a biocompatible matrix (BM) is placed loosely along a posterior surface of an injured spinal cord of an experimental animal (EA) The EA is immersed periodically into a constant magnetic field. Its magnetic vector is aligned with a craniocaudal direction of spinal tracts. The BM of the BI is animal or herbal gelatine, wherein ferromagnetic magnetite or ferromagnetic ferrite nanoparticles 18-42 wt % with a particle size of 2.0-38 nm and at a magnetic field intensity (N) of 5-10 mT are immobilised as a magnetic material of the BI. The magnetic exposure covering the traumatic spinal injuries involves the combined effect of the magnetic field of the BI and the external rotating magnetic field at a magnetic induction of 0.15-0.35 T. The external magnetic exposure frequency is 1 or 2 times a day; the length is from 2 to 8 minutes per one session; the number of sessions is from 2 to 4. Animal gelatine in the BM of the BI can represent agar-agar, whereas herbal gelatine is pectin. The BM of the BI can additionally contain polyamines contributing to cell growth and proliferation, e.g. spermine or spemidine, in an amount of 1-5 wt %.
EFFECT: method enables recovering the spinal cord function sufficiently completely in the distal direction from the injury region, providing the favourable conditions for the adequate neuroglial growth with recipient's long neuron penetration from the intact proximal portion of the spinal cord into the distal one to ensure its conductive function, reducing the cicatrisation within the spinal injury, and eliminating the cerebral tissue oedema.
3 cl, 8 ex
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Authors
Dates
2015-07-27—Published
2014-06-11—Filed