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279736 occurrences (No.90 in the rank) during 5 years in the PubMed. [cache]

202) Mast cells (MC) containing their specific proteases were found in synovium tissue.

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PMID:34482531 DOI:10.1007/s12026-021-09231-2

2021 Immunologic research

* Disrupted homeostasis of synovial hyaluronic acid and its associations with synovial mast cell proteases of rheumatoid arthritis patients and collagen-induced arthritis rats.

- Hyaluronic acid (HA) is the main component of the extracellular matrix (ECM) of joints, and it is important for a lubricating joint during body movement. Degradation is the main metabolic process of HA in vivo. Hyaluronidases (HAase) were known for HA degradation. The inflammation-induced HA rapid-metabolism can reduce HA viscosity and concentration in joints. Mast cells (MC) containing their specific proteases were found in synovium tissue. It is unclear if MC-proteases could be involved in HA degradation pathways. This study aims to explore the correlations between HA concentration vs mast cell proteases, or matrix metalloproteinase-2/9 (MMP-2/9) and to investigate the association of MC-specific proteases with disrupted synovial HA homeostasis in rheumatoid arthritis (RA) or collagen-induced arthritis rats. The synovial fluid samples from no-RA and RA patients were collected; the collagen-induced arthritis (CIA) rat model was established; HA concentration and the activities of MC-protease and MMP-2/9 in the samples were detected, and the correlations were analyzed. In vitro interaction experiment was carried out by mixing MC-proteases with HA to observe the degradation speed. The HA concentrations in synovial fluids were decreased in RA patients and CIA rats compared with those in no-RA subjects or normal rats respectively. The activities of mast cell proteases in synovial fluids were increased and positively correlated with MMP-9, but negatively correlated with HA concentrations. In vitro study, the addition of MC-chymase and tryptase promoted the speed in HA degradation. MC-proteases may influence HA degradation pathway.

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(1)18 to	(21)3 for	(41)2 food	(61)2 or
(2)11 and	(22)3 genes	(42)2 foods	(62)2 parameters
(3)8 focus	(23)3 genetic	(43)2 gene	(63)2 patient
(4)7 vulnerability	(24)3 marker	(44)2 granule	(64)2 physical
(5)6 effects	(25)3 mechanisms	(45)2 group	(65)2 proteases
(6)6 factors	(26)3 proteins	(46)2 groups	(66)2 research
(7)5 recommendations	(27)2 GC	(47)2 immune	(67)2 responses
(8)4 IgA	(28)2 N3FA	(48)2 in	(68)2 risk
(9)4 aspects	(29)2 PHC	(49)2 information	(69)2 sensitization
(10)4 cancer	(30)2 antibodies	(50)2 interventional	(70)2 siRNA
(11)4 components	(31)2 antigens	(51)2 interventions	(71)2 social
(12)4 inhibitor	(32)2 area	(52)2 issues	(72)2 spatial
(13)4 population	(33)2 attention	(53)2 knockout	(73)2 study
(14)3 T	(34)2 binding	(54)2 mental	(74)2 target
(15)3 brain	(35)2 biological	(55)2 microbial	(75)2 terms
(16)3 cell	(36)2 biomarkers	(56)2 molecular	(76)2 topics
(17)3 changes	(37)2 cellular	(57)2 mortality	(77)2 treatment
(18)3 counseling	(38)2 clinical	(58)2 mutations	(78)2 type
(19)3 deletion	(39)2 emphasis	(59)2 needs
(20)3 differences	(40)2 factors,	(60)2 online

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--- WordNet output for specific --- =>特有の, 特効薬, 明確な, 特定の, 種の, はっきりした Overview of noun specific The noun specific has 2 senses (no senses from tagged texts) 1. particular, specific -- (a fact about some part (as opposed to general); "he always reasons from the particular to the general") 2. specific -- (a medicine that has a mitigating effect on a specific disease; "quinine is a specific for malaria") Overview of adj specific The adj specific has 4 senses (first 2 from tagged texts) 1. (39) specific -- ((sometimes followed by `to') applying to or characterized by or distinguishing something particular or special or unique; "rules with specific application"; "demands specific to the job"; "a specific and detailed account of the accident") 2. (5) specific -- (stated explicitly or in detail; "needed a specific amount") 3. specific -- (relating to or distinguishing or constituting a taxonomic species; "specific characters") 4. specific -- (being or affecting a disease produced by a particular microorganism or condition; used also of stains or dyes used in making microscope slides; "quinine is highly specific for malaria"; "a specific remedy"; "a specific stain is one having a specific affinity for particular structural elements") --- WordNet end ---