ELIZA

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286252 occurrences (No.88 in the rank) during 5 years in the PubMed. [no cache] 500 found

192) These findings indicate that the deficiency of hyaluronan in the aged dermis might result from the down-regulation in the potential of older human fibroblasts to secrete hyaluronan and that decrease in secretory potential is mainly associated with the down-regulated expression of hyaluronan synthases, especially hyaluronan synthase 2, but not with the expression levels of hyaluronidases.

--- ABSTRACT ---

PMID:24590928 DOI:10.1007/s10616-014-9707-2

2015 Cytotechnology

* The decreased secretion of hyaluronan by older human fibroblasts under physiological conditions is mainly associated with the down-regulated expression of hyaluronan synthases but not with the expression levels of hyaluronidases.

- Although it has been reported that levels of hyaluronan are decreased in the dermis of aged skin, little is known about the cellular mechanism(s) underlying that hyaluronan deficiency. Since hyaluronan is produced by dermal fibroblasts and is secreted into the surrounding dermal tissues, we examined the secretion of hyaluronan by dermal fibroblasts and characterized its cellular mechanism using real-time RT-PCR and western blotting for its synthesizing and degrading enzymes, hyaluronan synthase and hyaluronidase, respectively. The secretion of hyaluronan by dermal fibroblasts derived from differently aged human donors, was higher in the younger human fibroblasts tested (0 and 19 years old) compared to the older human fibroblasts tested (39, 56 and 77 years old). The relative secretion levels of hyaluronan by the different human fibroblasts tested were attributable to the relative expression of hyaluronan synthases 1, 2, 3 but not hyaluronidases 1, 2 enzymes at the gene and protein levels among those fibroblasts. These findings indicate that the deficiency of hyaluronan in the aged dermis might result from the down-regulation in the potential of older human fibroblasts to secrete hyaluronan and that decrease in secretory potential is mainly associated with the down-regulated expression of hyaluronan synthases, especially hyaluronan synthase 2, but not with the expression levels of hyaluronidases.

--- ABSTRACT END ---

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(1)55 the	(15)3 key	(29)2 P-selectin,	(44)2 cell
(2)11 a	(16)3 multiple	(30)2 P2X3	(45)2 constitutively
(3)9 genes	(17)3 ncRAN	(32)2 Sema	(46)2 hyaluronan
(4)8 several	(18)3 nicotine-induced	(33)2 Siglec-9	(47)2 imprinted
(5)6 miR-218	(19)3 nuclear	(34)2 TAF4	(48)2 intercellular
(6)5 these	(20)3 specific	(35)2 Wnt	(49)2 membrane
(7)4 VEGF	(21)3 this	(36)2 acetyl-CoA	(50)2 miR-128
(8)4 first	(22)2 AdipoR1	(37)2 adhesion	(51)2 napsin
(9)4 matrix	(23)2 Caspase	(38)2 adiponectin	(52)2 phosphorylated
(10)3 CYP1A1	(24)2 FBP1	(39)2 angiogenic	(53)2 piRNA-823
(11)3 DNMT1	(25)2 GABAA	(40)2 anti-apoptotic	(54)2 pro-inflammatory
(12)3 all	(26)2 GLP-1R	(41)2 b-FGF,	(55)2 some
(13)3 cardiac	(27)2 Ki-67,	(42)2 c-Myc	(56)2 three
(14)3 integrin	(28)2 LOX-1	(43)2 cartilage

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--- WordNet output for expression --- =>表現すること, 式, 表現, 表示, 言い回し, 表現法, 表情 Overview of noun expression The noun expression has 9 senses (first 6 from tagged texts) 1. (23) expression, look, aspect, facial expression, face -- (the feelings expressed on a person's face; "a sad expression"; "a look of triumph"; "an angry face") 2. (18) expression, manifestation, reflection, reflexion -- (expression without words; "tears are an expression of grief"; "the pulse is a reflection of the heart's condition") 3. (15) expression, verbal expression, verbalism -- (the communication (in speech or writing) of your beliefs or opinions; "expressions of good will"; "he helped me find verbal expression for my ideas"; "the idea was immediate but the verbalism took hours") 4. (5) saying, expression, locution -- (a word or phrase that particular people use in particular situations; "pardon the expression") 5. (4) formulation, expression -- (the style of expressing yourself; "he suggested a better formulation"; "his manner of expression showed how much he cared") 6. (4) formula, expression -- (a group of symbols that make a mathematical statement) 7. expression -- ((genetics) the process of expressing a gene) 8. construction, grammatical construction, expression -- (a group of words that form a constituent of a sentence and are considered as a single unit; "I concluded from his awkward constructions that he was a foreigner") 9. expression -- (the act of forcing something out by squeezing or pressing; "the expression of milk from her breast") --- WordNet end ---