35 research outputs found
Π€ΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΠΈΠ·Π°ΡΠΈΡ ΠΊΠ°Π»ΡΡΠΈΠΉΡΠΎΡΡΠ°ΡΠ½ΡΡ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ² Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡΠΌΠΈ Π±Π΅Π»ΠΊΠΎΠ²ΠΎΠΉ ΠΏΡΠΈΡΠΎΠ΄Ρ
Recent approaches to the calcium phosphate (CaP) materials functionalization with drugs and biomolecules have been actively developed for bone defect reconstruction. However, the current techniques are low efficient in context of drug incorporation and non-controlled release from the materials. Eventually, continuous therapeutic effect in bone defect area couldnβt be achieved. The aim of this work was to develop an effective method for biologically active molecules incorporation onto the surface of CΠ°P materials, and to study the dynamics of its release. Octacalcium phosphate (OCP), Ξ²-tricalcium phosphate (Ξ²-TCP) and Ξ²-tricalcium phosphate with biomimetic calcium phosphate layer (Ξ²-TCPmod.) were used as ceramic bioactive carriers. Bovine serum albumin (BSA) was used as a model compounds. BSA incorporation on the ceramics surface was performed by biomimetic co-precipitation from several buffer solutions containing the incorporated compound. The efficiency of biomolecules incorporation was evaluated by measuring BSA concentrations in solutions before and after materials incubation. The release of the incorporated molecules from the materials was investigated for 6 days. The structure and composition of the obtained materials were studied by application of XRD, FTIR, SEM, BET methods. It was shown that the OCP specific surface (surface area, (SBET)) was almost in 12 times higher than SBET of Ξ²-TCP. By using biomimetic approach the increase of Ξ²-TCP surface area in 1.6 times was achieved; this enhanced protein incorporation more than 3 times. The BSA biomimetic co-precipitation together with CaP on the OCP surface proved to be more effective than its adsorption from salt free solutions. The study of BSA release revealed that only 45% of loaded albumin released during 6 days of observation. Therefore, the effective method of CaP functionalization was developed. Based on biomolecules incorporation by biomimetic co-precipitation from CaP solutions, it provided a low rate of its release.Π ΠΏΠΎΡΠ»Π΅Π΄Π½Π΅Π΅ Π²ΡΠ΅ΠΌΡ Π°ΠΊΡΠΈΠ²Π½ΠΎ ΡΠ°Π·ΡΠ°Π±Π°ΡΡΠ²Π°ΡΡΡΡ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄Ρ ΠΊ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΊΠ°Π»ΡΡΠΈΠΉΡΠΎΡΡΠ°ΡΠ½ΡΡ
(ΠΠ€) ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ² Π»Π΅ΠΊΠ°ΡΡΡΠ²Π΅Π½Π½ΡΠΌΠΈ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠ°ΠΌΠΈ ΠΈ Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡΠΌΠΈ Ρ ΡΠ΅Π»ΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΈΡ
Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΏΠ»Π°ΡΡΠΎΡΠΌΡ Π΄Π»Ρ Π°Π΄ΡΠ΅ΡΠ½ΠΎΠΉ Π΄ΠΎΡΡΠ°Π²ΠΊΠΈ Π² Π·ΠΎΠ½Ρ ΠΊΠΎΡΡΠ½ΠΎΠ³ΠΎ Π΄Π΅ΡΠ΅ΠΊΡΠ°. ΠΠ΄Π½Π°ΠΊΠΎ ΡΡΡΠ΅ΡΡΠ²ΡΡΡΠΈΠ΅ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ Π½ΠΈΠ·ΠΊΠΎΠΉ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡΡ ΠΈΠ½ΠΊΠΎΡΠΏΠΎΡΠ°ΡΠΈΠΈ ΠΈ Π½Π΅ΡΠ΄ΠΎΠ²Π»Π΅ΡΠ²ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ ΡΠΊΠΎΡΠΎΡΡΡΡ Π²ΡΡΠ²ΠΎΠ±ΠΎΠΆΠ΄Π΅Π½ΠΈΡ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ² ΠΈΠ· ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ², Π½Π΅ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡΠ΅ΠΉ ΠΏΠΎΡΡΠΎΡΠ½Π½ΡΠΉ ΠΈ Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΡΠΉ ΡΠ΅ΡΠ°ΠΏΠ΅Π²ΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΡΡΠ΅ΠΊΡ Π² ΠΎΠ±Π»Π°ΡΡΠΈ Π΄Π΅ΡΠ΅ΠΊΡΠ°. Π¦Π΅Π»ΡΡ Π΄Π°Π½Π½ΠΎΠΉ ΡΠ°Π±ΠΎΡΡ ΡΡΠ°Π»Π° ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΡΠΏΠΎΡΠΎΠ±Π° ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΠ€ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ² Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡΠΌΠΈ ΠΈ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΈΡ
Π²ΡΡΠ²ΠΎΠ±ΠΎΠΆΠ΄Π΅Π½ΠΈΡ. Π ΡΠ°Π±ΠΎΡΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈ Π³ΡΠ°Π½ΡΠ»ΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΠΠ€ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΎΠΊΡΠ°ΠΊΠ°Π»ΡΡΠΈΠ΅Π²ΡΠΉ ΡΠΎΡΡΠ°Ρ (ΠΠΠ€), Ξ²-ΡΡΠΈΠΊΠ°Π»ΡΡΠΈΠ΅Π²ΡΠΉ ΡΠΎΡΡΠ°Ρ (Ξ²-Π’ΠΠ€) ΠΈ Ξ²-Π’ΠΠ€ Ρ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΠΠ€ ΡΠ»ΠΎΠ΅ΠΌ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ (Ξ²-Π’ΠΠ€ΠΌΠΎΠ΄.), Π° Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΌΠΎΠ΄Π΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡ - Π±ΡΡΠΈΠΉ ΡΡΠ²ΠΎΡΠΎΡΠΎΡΠ½ΡΠΉ Π°Π»ΡΠ±ΡΠΌΠΈΠ½ (BSA). ΠΠ½ΠΊΠΎΡΠΏΠΎΡΠ°ΡΠΈΡ BSA Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡ ΠΊΠ΅ΡΠ°ΠΌΠΈΠΊΠΈ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΠ»ΠΈ ΡΠΎΠ²ΠΌΠ΅ΡΡΠ½ΠΎ Ρ Π±ΠΈΠΎΠΌΠΈΠΌΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΠ΅ΠΌ ΠΈΠ· ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΠ€ Π±ΡΡΠ΅ΡΠ½ΡΡ
ΡΠ°ΡΡΠ²ΠΎΡΠΎΠ², ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΡ
ΠΈΠ½ΠΊΠΎΡΠΏΠΎΡΠΈΡΡΠ΅ΠΌΠΎΠ΅ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠ΅. ΠΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΈΠ½ΠΊΠΎΡΠΏΠΎΡΠ°ΡΠΈΠΈ BSA ΠΎΡΠ΅Π½ΠΈΠ²Π°Π»ΠΈ, ΠΈΠ·ΠΌΠ΅ΡΡΡ Π΅Π³ΠΎ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ Π² ΡΠ°ΡΡΠ²ΠΎΡΠ°Ρ
Π΄ΠΎ ΠΈ ΠΏΠΎΡΠ»Π΅ ΠΈΠ½ΠΊΡΠ±Π°ΡΠΈΠΈ Ρ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π°ΠΌΠΈ. ΠΠΈΠ½Π°ΠΌΠΈΠΊΡ Π²ΡΡ
ΠΎΠ΄Π° BSA ΠΈΠ· ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π»ΠΈ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ 6 ΡΡΡΠΎΠΊ. ΠΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡ ΠΈ ΡΡΡΡΠΊΡΡΡΡ ΠΠ€ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π»ΠΈ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ²: ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ΅ΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ, ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ°Π·ΠΎΠ²ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°, ΠΠ-Π€ΡΡΡΠ΅ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°, Π½ΠΈΠ·ΠΊΠΎΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ Π°Π΄ΡΠΎΡΠ±ΡΠΈΠΈ Π°Π·ΠΎΡΠ°. Π ΡΠ°Π±ΠΎΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΡΠ΄Π΅Π»ΡΠ½Π°Ρ ΠΏΠ»ΠΎΡΠ°Π΄Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ (SΡΠ΄.) ΠΠΠ€ ΡΠΎΡΡΠ°Π²ΠΈΠ»Π° 5.9 ΠΌ2/Π³, Ξ²-Π’ΠΠ€ β 0.5 ΠΌ2/Π³. ΠΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Ξ²-Π’ΠΠ€ ΠΏΡΠΈΠ²Π΅Π»Π° ΠΊ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ SΡΠ΄. Π² 1.6 ΡΠ°Π· ΠΈ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° Π²ΡΡΡΠΎΠ΅Π½Π½ΠΎΠ³ΠΎ BSA Π½Π° Π΅Π³ΠΎ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡ Π² 3 ΡΠ°Π·Π°. Π‘ΠΎΠ²ΠΌΠ΅ΡΡΠ½Π°Ρ ΠΏΡΠ΅ΡΠΈΠΏΠΈΡΠ°ΡΠΈΡ BSA ΠΈ ΡΠΎΡΡΠ°ΡΠΎΠ² ΠΊΠ°Π»ΡΡΠΈΡ Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ Π±ΠΈΠΎΠΌΠΈΠΌΠ΅ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΡ Π±ΡΠ»Π° Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½Π΅Π΅ Π°Π΄ΡΠΎΡΠ±ΡΠΈΠΈ BSA Π±Π΅Π· ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΠ€ ΡΠ°ΡΡΠ²ΠΎΡΠΎΠ². ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ Π²ΡΡΠ²ΠΎΠ±ΠΎΠΆΠ΄Π΅Π½ΠΈΡ BSA ΠΈΠ· ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΠΠ€ Π²ΡΡΠ²ΠΈΠ»ΠΎ, ΡΡΠΎ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ 6 ΡΡΡΠΎΠΊ Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΡ Π²ΡΡΠ²ΠΎΠ±ΠΎΠΆΠ΄Π°Π΅ΡΡΡ 45% Π²ΡΡΡΠΎΠ΅Π½Π½ΠΎΠ³ΠΎ Π² ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π» Π±Π΅Π»ΠΊΠ°. Π’Π°ΠΊΠΈΠΌ ΠΎΠ±ΡΠ°Π·ΠΎΠΌ, Π±ΡΠ» ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΠ€ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ², ΠΎΡΠ½ΠΎΠ²Π°Π½Π½ΡΠΉ Π½Π° ΠΈΠ½ΠΊΠΎΡΠΏΠΎΡΠ°ΡΠΈΠΈ Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ ΡΠΎΠ²ΠΌΠ΅ΡΡΠ½ΠΎ Ρ Π±ΠΈΠΎΠΌΠΈΠΌΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΠ΅ΠΌ ΠΈΠ· ΠΊΠ°Π»ΡΡΠΈΠΉ- ΡΠΎΡΡΠ°ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΡΡΠ²ΠΎΡΠ° ΠΈ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡΠΈΠΉ Π½ΠΈΠ·ΠΊΡΡ ΡΠΊΠΎΡΠΎΡΡΡ ΠΈΡ
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