structure using salt crystals<\/a> of two sizes, 106-200\u00b5m and 40-75\u00b5m. The first size allowed scientists to form pores in the material, the second created a microrelief on their surface. If the pores are needed more for the sprouting of blood vessels and bone tissue, the microrelief contributes to the attachment of osteoblasts to the surface of the implant.<\/p>\n“To attract osteoblasts to the implant site and induce bone growth, we saturated the samples with recombinant BMP-2 protein obtained in our laboratory. The addition of recombinant erythropoietin, also developed by us, was supposed to promote increased vascular germination and additional growth of bone tissue.<\/p>\n
\u201cThe work on obtaining the material and characterising its properties was carried out within the framework of a project funded by the Russian Science Foundation”, comments Anna Karyagina, ScD in Biology, senior researcher at Gamalei Institute of Epidemiology.<\/p>\n
Implanting polyether ether ketone into mice<\/h3>\n
NUST MISIS researchers implanted samples of the material into a 4mm round skull defect in eight groups of laboratory mice. Aside from the control group, the mice received samples with different composition\u2014pure polyether ether ketone, polyether ether ketone without proteins, polyether ether ketone with different concentrations of proteins, and the same variants with the addition of hydroxyapatite.<\/p>\n
Scientist discovered that the optimal combinations are polyether ether ketone with EPO 3.5\u00b5g, BMP-2 and 3.5\u00b5g. In these groups, the maximum overgrowth of the bone defect was achieved in six weeks of the experiment.<\/p>\n
Due to the introduction of recombinant proteins, it was possible to increase the effectiveness of implant survival by four to six times. Not only will this new implant allow the patient to recover faster after surgery, the new bone tissue at the site of the defect would be able to withstand the same loads as before the operation.<\/p>\n
Scientists plan to continue working on improving polymer implantation materials, for instance by using bioresorbable compounds that dissolve over time.<\/p>\n","protected":false},"excerpt":{"rendered":"
Researchers have made a skull polymer implant from polyether ether ketone, which can increase skull implant survival by up to 600%. A team of researchers from The National University of Science and Technology MISIS (NUST MISIS) and Gamalei Institute of Epidemiology and Microbiology have developed a method of increasing the survival efficiency of skull polymer […]<\/p>\n","protected":false},"author":4,"featured_media":5015,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[10551],"tags":[849],"acf":[],"yoast_head":"\n
Scientists create skull implants from polyether ether ketone<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n\n\n\n\n\n\t\n\t\n\t\n