3 research outputs found

    Reactive Changes in Elements of Stromal-Vascular Differons of Dysferlin-Deficient Skeletal Muscles after Procaine Injection

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    The study assessed reactivity of stromal-vascular skeletal muscle differons to acute chemical injury. Dysferlin-deficient Bla/J mice and the wild-type Π‘57BL/6 mice were intramuscularly injected with 100 ΞΌl of 0.5% procaine solution. The middle segment of gastrocnemius muscle was taken on postsurgery days 2, 4, 10, and 14 for routine histological examination. To evaluate proliferation and vascularization, the paraffin sections were stained immunohistochemically with antibodies to Ξ±-smooth muscle actin and Ki-67. The connective tissue was stained according to Mallory. The study revealed diminished proliferative activity of stromal-vascular differons and decreased vascular density in muscles of Bla/J mice. Thus, mutations in the DYSF gene coding dysferlin down-regulate the reparation processes in all differons of skeletal muscle

    ΠŸΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Π³Π΅Π½-Π°ΠΊΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ остСопластичСского ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Π° ΠΏΡ€ΠΈ Π»Π΅Ρ‡Π΅Π½ΠΈΠΈ нСсращСния Π±Π΅Π΄Ρ€Π΅Π½Π½ΠΎΠΉ кости: клиничСский случай

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    Background. Non-unions of distal femur fractures are difficult to treat and occur in about 6% of cases. Multifactorial causes of fractures non-unions require individual treatment for each patient in accordance with the β€œdiamond” concept. The standard protocol for patients with atrophic non-unions treatment involves bone autografts using, but there are limitations of size, shape, quality and quantity of autografts. Osteoplastic materials with osteoinductive (angiogenic) and osteoconductive activity can be used as bioresorbable implants in combination with autogenous spongy bone in the treatment of extremities long bones non-unions.Clinical case description. A 63-year-old patient was admitted to the clinic for non-union of distal third of the femur with bone defect, fragments were fixed with a plate. The examination revealed plate fracture, screws migration (group III according to the Non-Union Scoring System). The volume of supposed bone defect was about 8.5 cm3. The surgery was performed: plate removal, debridement of the non-union zone, femur defect replacement with a bone autograft in combination with the gene-activated osteoplastic material β€œHistograft” in a ratio of 1:1, osteosynthesis of the femur with two plates. After 6 months. during the control computed tomography, consolidation was determined (4 points on the REBORNE scale). Pain was practically absent (NRS-2). The range of motion in the knee joint: flexion β€” 80o, extension β€” 180o. According to the Knee Society Score (KSS) β€” 68 points.Conclusion. In this case report the complete fracture fusion was achieved in patient within 6 months β€” 4 points on the REBORNE scale. No adverse events were observed. It confirms the safety and efficacy of described method and allows to continue the clinical trials.ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ. ΠŸΡ€ΠΈ ΠΏΠ΅Ρ€Π΅Π»ΠΎΠΌΠ°Ρ… Π΄ΠΈΡΡ‚Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΎΡ‚Π΄Π΅Π»Π° Π±Π΅Π΄Ρ€Π΅Π½Π½ΠΎΠΉ кости нСсращСния ΡΠΎΡΡ‚Π°Π²Π»ΡΡŽΡ‚ ΠΎΠΊΠΎΠ»ΠΎ 6% случаСв ΠΈ Ρ‚Ρ€ΡƒΠ΄Π½ΠΎ ΠΏΠΎΠ΄Π΄Π°ΡŽΡ‚ΡΡ Π»Π΅Ρ‡Π΅Π½ΠΈΡŽ. ΠœΠ½ΠΎΠ³ΠΎΡ„Π°ΠΊΡ‚ΠΎΡ€Π½Ρ‹Π΅ ΠΏΡ€ΠΈΡ‡ΠΈΠ½Ρ‹ нСсращСния ΠΏΠ΅Ρ€Π΅Π»ΠΎΠΌΠΎΠ² Ρ‚Ρ€Π΅Π±ΡƒΡŽΡ‚ ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡƒΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ΄Π±ΠΎΡ€Π° лСчСния Π² соотвСтствии с Β«Π±Ρ€ΠΈΠ»Π»ΠΈΠ°Π½Ρ‚ΠΎΠ²ΠΎΠΉΒ» ΠΊΠΎΠ½Ρ†Π΅ΠΏΡ†ΠΈΠ΅ΠΉ. Π‘Ρ‚Π°Π½Π΄Π°Ρ€Ρ‚Π½Ρ‹ΠΉ ΠΏΡ€ΠΎΡ‚ΠΎΠΊΠΎΠ» лСчСния ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ² с атрофичСскими нСсращСниями ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅Ρ‚ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ костных аутотрансплантатов, ΠΎΠ΄Π½Π°ΠΊΠΎ возмоТности формирования Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΡ‹Ρ… ΠΏΠΎ Ρ€Π°Π·ΠΌΠ΅Ρ€Ρƒ, Ρ„ΠΎΡ€ΠΌΠ΅, качСству ΠΈ количСству аутотрансплантатов ΠΎΠ³Ρ€Π°Π½ΠΈΡ‡Π΅Π½Ρ‹. ΠžΡΡ‚Π΅ΠΎΠΏΠ»Π°ΡΡ‚ΠΈΡ‡Π΅ΡΠΊΠΈΠ΅ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ с остСоиндуктивной (Π°Π½Π³ΠΈΠΎΠ³Π΅Π½Π½ΠΎΠΉ) ΠΈ остСокондуктивной Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒΡŽ допустимо ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ Π² качСствС Π±ΠΈΠΎΡ€Π΅Π·ΠΎΡ€Π±ΠΈΡ€ΡƒΠ΅ΠΌΡ‹Ρ… ΠΈΠΌΠΏΠ»Π°Π½Ρ‚Π°Ρ‚ΠΎΠ² Π² сочСтании с Π°ΡƒΡ‚ΠΎΠ³Π΅Π½Π½ΠΎΠΉ Π³ΡƒΠ±Ρ‡Π°Ρ‚ΠΎΠΉ ΠΊΠΎΡΡ‚ΡŒΡŽ ΠΏΡ€ΠΈ Π»Π΅Ρ‡Π΅Π½ΠΈΠΈ нСсращСний Π΄Π»ΠΈΠ½Π½Ρ‹Ρ… костСй конСчностСй.ОписаниС клиничСского случая. ΠŸΠ°Ρ†ΠΈΠ΅Π½Ρ‚, 63 Π³ΠΎΠ΄Π°, поступил Π² ΠΊΠ»ΠΈΠ½ΠΈΠΊΡƒ ΠΏΠΎ ΠΏΠΎΠ²ΠΎΠ΄Ρƒ нСсращСния с Π΄Π΅Ρ„Π΅ΠΊΡ‚ΠΎΠΌ костной Ρ‚ΠΊΠ°Π½ΠΈ Π½ΠΈΠΆΠ½Π΅ΠΉ Ρ‚Ρ€Π΅Ρ‚ΠΈ Π±Π΅Π΄Ρ€Π΅Π½Π½ΠΎΠΉ кости, фиксированного пластиной. ΠŸΡ€ΠΈ обслСдовании выявлСны ΠΏΠ΅Ρ€Π΅Π»ΠΎΠΌ пластины, миграция Π²ΠΈΠ½Ρ‚ΠΎΠ² (III Π³Ρ€ΡƒΠΏΠΏΠ° ΠΏΠΎ систСмС Non-Union Scoring System). ОбъСм ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅ΠΌΠΎΠ³ΠΎ костного Π΄Π΅Ρ„Π΅ΠΊΡ‚Π° составил ΠΎΠΊΠΎΠ»ΠΎ 8,5 см3. Π’Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π° опСрация: ΡƒΠ΄Π°Π»Π΅Π½ΠΈΠ΅ мСталлоконструкции, ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Π·ΠΎΠ½Ρ‹ нСсращСния, пластика Π΄Π΅Ρ„Π΅ΠΊΡ‚Π° Π±Π΅Π΄Ρ€Π΅Π½Π½ΠΎΠΉ кости костным аутотрансплантатом Π² ΠΊΠΎΠΌΠ±ΠΈΠ½Π°Ρ†ΠΈΠΈ с Π³Π΅Π½-Π°ΠΊΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹ΠΌ остСопластичСским ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΠΎΠΌ «Гистографт» Π² ΡΠΎΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠΈ 1:1, остСосинтСз Π±Π΅Π΄Ρ€Π΅Π½Π½ΠΎΠΉ кости двумя пластинами. Π§Π΅Ρ€Π΅Π· 6 мСс. посрСдством ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠΉ Ρ‚ΠΎΠΌΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π° консолидация (4 Π±Π°Π»Π»Π° ΠΏΠΎ шкалС REBORNE). Π‘ΠΎΠ»Π΅Π²ΠΎΠΉ синдром практичСски отсутствовал (NRS-2 ). Амплитуда Π΄Π²ΠΈΠΆΠ΅Π½ΠΈΠΉ Π² ΠΊΠΎΠ»Π΅Π½Π½ΠΎΠΌ суставС: сгибаниС β€” 80Β°, Ρ€Π°Π·Π³ΠΈΠ±Π°Π½ΠΈΠ΅ β€” 180Β°, ΠΏΠΎ шкалС Knee Society Score (KSS) β€” 68 Π±Π°Π»Π»ΠΎΠ².Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. Π’ прСдставлСнном клиничСском случаС использования Π³Π΅Π½-Π°ΠΊΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ остСопластичСского ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Π° Π½Π° основС ΠΎΠΊΡ‚Π°ΠΊΠ°Π»ΡŒΡ†Π΅Π²ΠΎΠ³ΠΎ фосфата ΠΈ ΠΏΠ»Π°Π·ΠΌΠΈΠ΄- Π½ΠΎΠΉ Π”ΠΠš с Π³Π΅Π½ΠΎΠΌ VEGF-A ΠΏΠΎΠ»Π½ΠΎΠ΅ сращСниС Π±Ρ‹Π»ΠΎ достигнуто Π½Π° срокС 6 мСс.: 4 Π±Π°Π»Π»Π° ΠΏΠΎ шкалС REBORNE. ΠŸΡ€ΠΈ этом Π½Π΅ наблюдалось Π½Π΅ΠΆΠ΅Π»Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… явлСний, Ρ‡Ρ‚ΠΎ ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€ΠΆΠ΄Π°Π΅Ρ‚ Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎΡΡ‚ΡŒ ΠΈ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ издСлия ΠΈ позволяСт ΠΏΡ€ΠΎΠ΄ΠΎΠ»ΠΆΠΈΡ‚ΡŒ клиничСскоС исслСдованиС

    Gene-Activated Hydrogels Based on Sodium Alginate for Reparative Myogenesis of Skeletal Muscle

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    Abstract: Two variants of gene-activated hydrogels based on sodium alginate containing plasmid DNA with the gene of vascular endothelial growth factor (VEGF-A) are developed. The former represented alginate hydrogel without additional components; the latter contained up to 25 wt % of octacalcium phosphate (OCP) micrograins. Alginate-based hydrogels without OCP are characterized by a honeycomb structure with the pore size of 50–200 ΞΌm and mechanical compression strength of 0.2 MPa. Addition of OCP micrograins results in filling of the polymer framework by them and an increase in the compression strength to 0.57 MPa at 16.7 wt % of OCP with a decrease to 0.49 MPa with an increase in the OCP content to 20 wt %. Both variants of gene-activated hydrogels induce reparative myogenesis in the central zone of muscle defect; a larger number of MyoG+ cells and newly formed MyH7B+ muscle fibers are identified as compared to analogous hydrogels without plasmid DNA after two weeks after surgery (p < 0.05)
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