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1099112 occurrences (No.1 in the rank) during 5 years in the PubMed. [cache]
169) This study aimed to produce a bioactive poly (l-lactide-co-glycolide)-tricalcium phosphate (PLGA-TCP)-based porous scaffold incorporating the osteopromotive phytomolecule icaritin, using a fine spinning technology.
2015 Journal of tissue engineering and regenerative medicine
* Biofabrication of a PLGA-TCP-based porous bioactive bone substitute with sustained release of icaritin.
- A phytomolecule, icaritin, has been identified and shown to be osteopromotive for the prevention of osteoporosis and osteonecrosis. This study aimed to produce a bioactive poly (l-lactide-co-glycolide)-tricalcium phosphate (PLGA-TCP)-based porous scaffold incorporating the osteopromotive phytomolecule icaritin, using a fine spinning technology. Both the structure and the composition of icaritin-releasing PLGA-TCP-based scaffolds were evaluated by scanning electron microscopy (SEM). The porosity was quantified by both water absorption and micro-computed tomography (micro-CT). The mechanical properties were evaluated using a compression test. In vitro release of icaritin from the PLGA-TCP scaffold was quantified by high-performance liquid chromatography (HPLC). The attachment, proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) on the composite scaffold were evaluated. Both an in vitro cytotoxicity test and an in vivo test via muscular implantation were conducted to confirm the scaffold's biocompatibility. The results showed that the PLGA-TCP-icaritin composite scaffold was porous, with interconnected macro- (about 480 µm) and micropores (2-15 µm). The mechanical properties of the PLGA-TCP-icaritin scaffold were comparable with those of the pure PLGA-TCP scaffold, yet was spinning direction-dependent. Icaritin content was detected in the medium and increased with time. The PLGA-TCP-icaritin scaffold facilitated the attachment, proliferation and osteogenic differentiation of BMSCs. In vitro cytotoxicity test and in vivo intramuscular implantation showed that the composite scaffold had no toxicity with good biocompatibility. In conclusion, an osteopromotive phytomolecule, icaritin, was successfully incorporated into PLGA-TCP to form an innovative porous composite scaffold with sustained release of osteopromotive icaritin, and this scaffold had good biocompatibility and osteopromotion, suggesting its potential for orthopaedic applications.
=>1.〜を勉強[研究]する, 学ぶ, 調べる, 2.調査, 勉強, 3.書斎, 勉強する
Overview of noun study
The noun study has 10 senses (first 8 from tagged texts)
1. (90) survey, study -- (a detailed critical inspection)
2. (17) study, work -- (applying the mind to learning and understanding a subject (especially by
reading); "mastering a second language requires a lot of work"; "no schools offer graduate study in
interior design")
3. (6) report, study, written report -- (a written document describing the findings of some
individual or group; "this accords with the recent study by Hill and Dale")
4. (6) study -- (a state of deep mental absorption; "she is in a deep study")
5. (6) study -- (a room used for reading and writing and studying; "he knocked lightly on the closed
door of the study")
6. (3) discipline, subject, subject area, subject field, field, field of study, study, bailiwick --
(a branch of knowledge; "in what discipline is his doctorate?"; "teachers should be well trained in
their subject"; "anthropology is the study of human beings")
7. (2) sketch, study -- (preliminary drawing for later elaboration; "he made several studies before
starting to paint")
8. (1) cogitation, study -- (attentive consideration and meditation; "after much cogitation he
rejected the offer")
9. study -- (someone who memorizes quickly and easily (as the lines for a part in a play); "he is a
quick study")
10. study -- (a composition intended to develop one aspect of the performer's technique; "a study in
spiccato bowing")
Overview of verb study
The verb study has 6 senses (first 6 from tagged texts)
1. (73) analyze, analyse, study, examine, canvass, canvas -- (consider in detail and subject to an
analysis in order to discover essential features or meaning; "analyze a sonnet by Shakespeare";
"analyze the evidence in a criminal trial"; "analyze your real motives")
2. (17) study -- (be a student; follow a course of study; be enrolled at an institute of learning)
3. (15) study, consider -- (give careful consideration to; "consider the possibility of moving")
4. (13) learn, study, read, take -- (be a student of a certain subject; "She is reading for the bar
exam")
5. (5) study, hit the books -- (learn by reading books; "He is studying geology in his room"; "I
have an exam next week; I must hit the books now")
6. (2) study, meditate, contemplate -- (think intently and at length, as for spiritual purposes; "He
is meditating in his study")
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