ELIZA

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308018 occurrences (No.72 in the rank) during 5 years in the PubMed. [no cache] 500 found

14) Co-culture of mesenchymal stromal cells (MSCs) with articular chondrocytes (ACs) has been reported to improve the efficiency of utilization of a small number of ACs for the engineering of implantable cartilaginous tissues.

--- ABSTRACT ---

PMID:23225781 DOI:10.1002/term.1661

2015 Journal of tissue engineering and regenerative medicine

* Cartilage graft engineering by co-culturing primary human articular chondrocytes with human bone marrow stromal cells.

- Co-culture of mesenchymal stromal cells (MSCs) with articular chondrocytes (ACs) has been reported to improve the efficiency of utilization of a small number of ACs for the engineering of implantable cartilaginous tissues. However, the use of cells of animal origin and the generation of small-scale micromass tissues limit the clinical relevance of previous studies. Here we investigated the in vitro and in vivo chondrogenic capacities of scaffold-based constructs generated by combining primary human ACs with human bone marrow MSCs (BM-MSCs). The two cell types were cultured in collagen sponges (2 × 6 mm disks) at the BM-MSCs:ACs ratios: 100:0, 95:5, 75:25 and 0:100 for 3 weeks. Scaffolds freshly seeded or further precultured in vitro for 2 weeks were also implanted subcutaneously in nude mice and harvested after 8 or 6 weeks, respectively. Static co-culture of ACs (25%) with BM-MSCs (75%) in scaffolds resulted in up to 1.4-fold higher glycosaminoglycan (GAG) content than what would be expected based on the relative percentages of the different cell types. In vivo GAG induction was drastically enhanced by the in vitro preculture and maximal at the ratio 95:5 (3.8-fold higher). Immunostaining analyses revealed enhanced accumulation of type II collagen and reduced accumulation of type X collagen with increasing ACs percentage. Constructs generated in the perfusion bioreactor system were homogeneously cellularized. In summary, human cartilage grafts were successfully generated, culturing BM-MSCs with a relatively low fraction of non-expanded ACs in porous scaffolds. The proposed co-culture strategy is directly relevant towards a single-stage surgical procedure for cartilage repair.

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--- WordNet output for number --- =>に番号をつける, 数, 番号, 総数, 若干, 多数, 曲, 過ごす, 達する, 番号を唱える Overview of noun number The noun number has 11 senses (first 9 from tagged texts) 1. (131) number, figure -- (the property possessed by a sum or total or indefinite quantity of units or individuals; "he had a number of chores to do"; "the number of parameters is small"; "the figure was about a thousand") 2. (63) number -- (a concept of quantity involving zero and units; "every number has a unique position in the sequence") 3. (5) act, routine, number, turn, bit -- (a short theatrical performance that is part of a longer program; "he did his act three times every evening"; "she had a catchy little routine"; "it was one of the best numbers he ever did") 4. (5) phone number, telephone number, number -- (the number is used in calling a particular telephone; "he has an unlisted number") 5. (2) numeral, number -- (a symbol used to represent a number; "he learned to write the numerals before he went to school") 6. (2) issue, number -- (one of a series published periodically; "she found an old issue of the magazine in her dentist's waiting room") 7. (1) number -- (a select company of people; "I hope to become one of their number before I die") 8. (1) number, identification number -- (a numeral or string of numerals that is used for identification; "she refused to give them her Social Security number") 9. (1) number -- (a clothing measurement; "a number 13 shoe") 10. number -- (the grammatical category for the forms of nouns and pronouns and verbs that are used depending on the number of entities involved (singular or dual or plural); "in English the subject and the verb must agree in number") 11. number -- (an item of merchandise offered for sale; "she preferred the black nylon number"; "this sweater is an all-wool number") Overview of verb number The verb number has 6 senses (first 3 from tagged texts) 1. (6) total, number, add up, come, amount -- (add up in number or quantity; "The bills amounted to $2,000"; "The bill came to $2,000") 2. (2) number -- (give numbers to; "You should number the pages of the thesis") 3. (1) number, list -- (enumerate; "We must number the names of the great mathematicians") 4. count, number -- (put into a group; "The academy counts several Nobel Prize winners among its members") 5. count, number, enumerate, numerate -- (determine the number or amount of; "Can you count the books on your shelf?"; "Count your change") 6. number, keep down -- (place a limit on the number of) --- WordNet end ---