ELIZA

return kwic search for first out of >500 occurrences
378430 occurrences (No.48 in the rank) during 5 years in the PubMed. [cache]

126) As a first step towards the employment of such a vehicle for cell therapy, this study examined the capability of an alginate-sulphate/alginate scaffold, able to capture and rigorously control the release of GFs, to promote the expansion and lineage differentiation of NPCs in vitro.

--- ABSTRACT ---

PMID:23956230 DOI:10.1002/term.1797

2015 Journal of tissue engineering and regenerative medicine

* The influence of sustained dual-factor presentation on the expansion and differentiation of neural progenitors in affinity-binding alginate scaffolds.

- Biomaterials capable of controlling the release of multiple growth factors (GFs) could potentially promote the integration of co-transplanted neural progenitor cells (NPCs) and stimulate the plasticity and regenerability of the lesioned spinal cord. As a first step towards the employment of such a vehicle for cell therapy, this study examined the capability of an alginate-sulphate/alginate scaffold, able to capture and rigorously control the release of GFs, to promote the expansion and lineage differentiation of NPCs in vitro. Epidermal growth factor (EGF) and fibroblast growth factor-2 (bFGF) were affinity-bound to alginate-sulphate (200 ng/scaffold) and the bioconjugates were mixed with partially calcium-crosslinked alginate. NPCs isolated from 18 day-old rat embryo brains and seeded into the scaffold during preparation were found to proliferate and differentiate within the vehicle. A continuous release of both bFGF and EGF was noted for a period of 21 days. The concentrations of released GFs were sufficient to promote extensive NPC proliferation at initial cultivation times; the number of neurospheres in the scaffold was twice the number found in the 2D cultures supplemented with 20 ng/ml each factor every 3 days. Between days 10-14, when the GF concentrations had substantially declined, extensive cell migration from the neurospheres as well as lineage differentiation were noted in the scaffold; immunocytochemical analyses confirmed the presence of neurons, astrocytes and oligodendrocytes.The scaffold has a potential to serve as cell delivery vehicle, with proven capability to promote cell retention and expansion, while enabling NPC lineage differentiation in situ.

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[frequency of next (right) word to first]

(1)32 time	(19)5 meaningful	(37)2 5	(55)2 marriage
(2)21 report	(20)4 line	(38)2 6	(56)2 meta-analysis
(3)11 and	(21)3 14	(39)2 72	(57)2 mitochondrial
(4)11 to	(22)3 3	(40)2 application	(58)2 months
(5)10 time,	(23)3 complete	(41)2 approach	(59)2 myocardial
(6)9 year	(24)3 described	(42)2 article	(60)2 postnatal
(7)8 2	(25)3 in	(43)2 attempt	(61)2 presented
(8)8 molar	(26)3 it	(44)2 choice	(62)2 relapse
(9)8 reported	(27)3 order	(45)2 clinical	(63)2 smear
(10)8 step	(28)3 postoperative	(46)2 component	(64)2 stage
(11)8 we	(29)3 record	(47)2 comprehensive	(65)2 step,
(12)7 case	(30)3 sequenced	(48)2 concern	(66)2 test
(13)6 determined	(31)3 the	(49)2 course	(67)2 that
(14)6 group	(32)3 treatment	(50)2 demonstration	(68)2 therapy
(15)6 study	(33)3 two	(51)2 few	(69)2 trimester
(16)5 dose	(34)3 was	(52)2 intentions	(70)2 trimester,
(17)5 evidence	(35)2 null	(53)2 introduction	(71)2 using
(18)5 generation	(36)2 30	(54)2 left

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--- WordNet output for first --- =>初めて, 最初の, 第一の, はじめに, 最初, 第1 Overview of noun first The noun first has 6 senses (first 4 from tagged texts) 1. (9) first, number one -- (the first or highest in an ordering or series; "He wanted to be the first") 2. (5) first, number one, number 1 -- (the first element in a countable series; "the first of the month") 3. (1) beginning, commencement, first, outset, get-go, start, kickoff, starting time, showtime, offset -- (the time at which something is supposed to begin; "they got an early start"; "she knew from the get-go that he was the man for her") 4. (1) first base, first -- (the fielding position of the player on a baseball team who is stationed at first of the bases in the infield (counting counterclockwise from home plate)) 5. first, first-class honours degree -- (an honours degree of the highest class) 6. first gear, first, low gear, low -- (the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving) Overview of adj first The adj first has 6 senses (first 5 from tagged texts) 1. (232) first -- (preceding all others in time or space or degree; "the first house on the right"; "the first day of spring"; "his first political race"; "her first baby"; "the first time"; "the first meetings of the new party"; "the first phase of his training") 2. (61) first, 1st -- (indicating the beginning unit in a series) 3. (4) inaugural, initiative, initiatory, first, maiden -- (serving to set in motion; "the magazine's inaugural issue"; "the initiative phase in the negotiations"; "an initiatory step toward a treaty"; "his first (or maiden) speech in Congress"; "the liner's maiden voyage") 4. (4) beginning, first -- (serving to begin; "the beginning canto of the poem"; "the first verse") 5. (3) first, foremost, world-class -- (ranking above all others; "was first in her class"; "the foremost figure among marine artists"; "the top graduate") 6. first -- (highest in pitch or chief among parts or voices or instruments or orchestra sections; "first soprano"; "the first violin section"; "played first horn") Overview of adv first The adv first has 4 senses (first 4 from tagged texts) 1. (58) first, firstly, foremost, first of all, first off -- (before anything else; "first we must consider the garter snake") 2. (40) first, for the first time -- (the initial time; "when Felix first saw a garter snake") 3. (9) first -- (before another in time, space, or importance; "I was here first"; "let's do this job first") 4. (4) foremost, first -- (prominently forward; "he put his best foot foremost") --- WordNet end ---