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Biomedical investigations of biodegradable PHAs / E. I. Shishatskaya // Macromolecular Symposia. - 2008. - Vol. 269, Is. 1. - P65-81, DOI 10.1002/masy.200850909 . - ISSN 1022-1360
Кл.слова (ненормированные):
Biodegradable polymers -- Biomedical investigations -- PHA -- ABS resins -- Biodegradable polymers -- Biopolymers -- Biotechnology -- Bone -- Cell culture -- Endothelial cells -- Fibers -- Functional polymers -- Osteoblasts -- Polymers -- Surgery -- Abdominal surgeries -- Biocompatible -- Biodegradable -- Biomedical -- Biomedical investigations -- Bone defects -- Ectopic bones -- Hepatocytes -- In vitro -- Microparticles -- Oral surgeries -- Osteogenesis -- PHA -- Polyhydroxybutyrate -- Polymer devices -- Ralstonia -- Russian academy of sciences -- Two types -- Polymer films
Аннотация: This work is a review of the results of biomedical studies of polymer devices (films, fibers, microparticles, 30 implants) made from resorbable PHAs synthesized by the bacterium Wautersia (Ralstonia) eutropha 65786, using the technology developed at the Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences. Two types of PHAs - polyhydroxybutyrate (PHB) and a hydroxybutyrate/hydroxyvalerate copolymer (PHB/PHV) - have been proven to be biocompatible in vitro in cultures of fibroblasts, endothelial cells, hepatocytes, and osteoblasts, and in short- and long-duration experiments on animals. Polymer films and membranes have been found to be usable as scaffolds for functioning cells and monofilament suture fibers - for stitching muscular-fascial wounds and in abdominal surgery. Ectopic bone formation assay and experiments with the model of segmental osteotomy showed that 30 PHB and PHB/HA implants can be used for reparative osteogenesis. The paper reports beneficial results of using polymers to repair bone defects in oral surgery. Copyright В© 2008 WILEY-VCH Verlag GmbH & Co. KGaA.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodnui Av., 69, Krasnoyarsk, 660148, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shishatskaya, E.I.

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An in vivo study of osteoplastic properties of resorbable poly-3-hydroxybutyrate in models of segmental osteotomy and chronic osteomyelitis / E. I. Shishatskaya [et al.] // Artif. Cells, Nanomed. Biotechnol. - 2014. - Vol. 42, Is. 5. - P344-355, DOI 10.3109/21691401.2013.816312 . - ISSN 2169-1401
Кл.слова (ненормированные):
3D implants -- Bone substitute -- Histological analysis and radiography -- Hydroxyapatite -- P3HB -- Polymer of 3-hydroxybutyric acid -- Reconstructive osteogenesis -- 3-hydroxybutyric acid -- Bone substitutes -- Histological analysis -- Osteogenesis -- P3HB -- Hydroxyapatite
Аннотация: A series of 3D implants and filling materials prepared from powdered biodegradable polymers, polyhydroxyalkanoates (PHAs), have been designed for the purposes of reparative osteogenesis. The 3D implants are made of resorbable polymer of hydroxybutyric acid (poly-3-hydroxybutyrate, P3HB) and a composite of this polymer with hydroxyapatite (HA) (P3HB/HA). The properties of the implants were studied in vivo in a model of segmental osteotomy and compared with commercial material Bio-Oss®. All implants containing P3HB as the main component facilitate reconstructive osteogenesis. P3HB and P3HB/HA show pronounced osteoplastic properties; their in vivo degradation is slow and corresponds to the growth of a new bone tissue, facilitating normal reparative osteogenesis. Also, powdered P3HB and P3HB/tienam can be used as filling materials for osteoplasty of bone cavities infected by Staphylococcus aureus. Biodegradable 3D implants and P3HB-based filling materials show pronounced osteoplastic properties and degrade in vivo at a slow rate, enabling normal reparative osteogenesis.

Scopus
Держатели документа:
Institute of Biophysics of Siberian Branch, Russian Academy of SciencesAkademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodnyi AvenueKrasnoyarsk, Russian Federation
Krasnoyarsk Dental Research Center for Diabetes Mellitus ProblemsKrasnoyarsk, Russian Federation
V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, 1 Partizan Zheleznyak StreetKrasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shishatskaya, E.I.; Kamendov, I.V.; Starosvetsky, S.I.; Vinnik, Y.S.; Markelova, N.N.; Shageev, A.A.; Khorzhevsky, V.A.; Peryanova, O.V.; Shumilova, A.A.

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Porous 3D implants of degradable poly-3-hydroxybutyrate used to enhance regeneration of rat cranial defect / A. A. Shumilova [et al.] // J. Biomed. Mater. Res. Part A. - 2017. - Vol. 105, Is. 2. - P566-577, DOI 10.1002/jbm.a.35933. - Cited References:53. - Contract grant sponsor: The state budget allocated to the fundamental research at the Russian Academy of Sciences; contract grant number: 01201351505 . - ISSN 1549-3296. - ISSN 1552-4965

РУБ Engineering, Biomedical + Materials Science, Biomaterials
Рубрики:
BONE TISSUE REGENERATION
   CRITICAL SIZE DEFECT
   IN-VITRO
   CALVARIAL
Кл.слова (ненормированные):
3D implants -- poly-3-hydroxybutyrate -- MSC differentiation -- grafts for -- osteogenesis -- regeneration of defect cranial
Аннотация: The study describes preparation and testing of porous 3D implants of natural degradable polymer of 3-hydroxybutyric acid P(3HB) for regeneration of bone tissue defects. The ability of the P(3HB) implants to favor attachment and facilitate proliferation and directed differentiation of mesenchymal stem cells (MSCs) was studied in the culture of MSCs isolated from bone marrow and adipose tissue. Tissue-engineered hybrid systems (grafts) constructed using P(3HB) and P(3HB) in combination with osteoblasts were used in experiments on laboratory animals (n=48) with bone defect model. The defect model (5 mm in diameter) was created in the rat parietal bone, and filling of the defect by the new bone tissue was monitored in the groups of animals with P(3HB) implants, with commercial material, and without implants (negative control). Computed tomography (CT) and histologic examination showed that after 120 days, in the group with the osteoblast-seeded P(3HB) implants, the defect was completely closed; in the group with the cell-free P(3HB) implants, the remaining defect was no more than 10% of the initial one (0.5 mm); in both the negative and positive controls, the size of the defect was about 1.0-1.2 mm. These results suggest that P(3HB) has good potential as osteoplastic material for reconstructive osteogenesis. (c) 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 566-577, 2017.

WOS,
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Держатели документа:
Siberian Fed Univ, 79 Svobodnyi Ave, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia.
VF Voino Yasenetsky Krasnoyarsk State Med Univ, 1 Partizan Zheleznyak St, Krasnoyarsk 660022, Russia.

Доп.точки доступа:
Shumilova, A. A.; Myltygashev, M. P.; Kirichenko, A. K.; Nikolaeva, E. D.; Volova, T. G.; Shishatskaya, E. I.; Russian Academy of Sciences [01201351505]

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