2021 International journal of biological macromolecules
* Macroporous scaffold surface modified with biological macromolecules and piroxicam-loaded gelatin nanofibers toward meniscus cartilage repair.
- Meniscus cartilage has poor self-healing capacity in the inner zone and its damage leads to articular cartilage degeneration. Here we have developed hybrid constructs using polycaprolactone (PCL) and polyurethane (PU) surface modified by gelatin (G), chitosan (C), and hyaluronic acid (H) biomacromolecules and piroxicam-loaded gelatin nanofibers (PCL/PU/GCH/P). The surface of constructs was crosslinked using EDC and NHS. The scaffolds were investigated by SEM, FTIR spectroscopy, swelling test, degradation rate, mechanical tests, and in vitro piroxicam release assay. Furthermore, the cell-seeded scaffolds were evaluated by SEM, viability assay, dapi staining, cell migration, proliferation, and gene expression of chondrocytes within these scaffolds. Finally, the animal study was performed in a rabbit model. Chondrocyte and rabbit adipose-derived mesenchymal stem cells (ASCs) from the infrapatellar fat pad (Hoffa's fat pad) were used. Swelling and degradation rate were increased in the modified scaffolds. Tensile and compressive Young's modulus also were near to human native meniscus tissue. The highest expression level of chondrocyte marker genes was observed for the PCL/PU/GCH scaffold. A significant regeneration was obtained in rabbits treated with ASCs-loaded PCL/PU/GCH/P scaffold after 3 months. The surface-modified scaffolds with or without ASCs could successfully accelerate meniscus regeneration and exhibit potential application in meniscus tissue engineering.
=>価格を評定する, 割合, 率, 歩合, 料金, 値段, 相場, 速度, 度合, 人を〜を思う, みなす, 価値がある,
人を〜とみなす, 科金, 評価する
Overview of noun rate
The noun rate has 4 senses (first 3 from tagged texts)
1. (68) rate -- (a magnitude or frequency relative to a time unit; "they traveled at a rate of 55
miles per hour"; "the rate of change was faster than expected")
2. (39) rate, charge per unit -- (amount of a charge or payment relative to some basis; "a 10-minute
phone call at that rate would cost $5")
3. (1) pace, rate -- (the relative speed of progress or change; "he lived at a fast pace"; "he works
at a great rate"; "the pace of events accelerated")
4. rate -- (a quantity or amount or measure considered as a proportion of another quantity or amount
or measure; "the literacy rate"; "the retention rate"; "the dropout rate")
Overview of verb rate
The verb rate has 3 senses (first 3 from tagged texts)
1. (9) rate, rank, range, order, grade, place -- (assign a rank or rating to; "how would you rank
these students?"; "The restaurant is rated highly in the food guide")
2. (2) rate -- (be worthy of or have a certain rating; "This bond rates highly")
3. (1) rate, value -- (estimate the value of; "How would you rate his chances to become President?";
"Gold was rated highly among the Romans")
--- WordNet end ---