Absence of differences among low, middle, and high molecular weight hyaluronan in activating murine immune cells in vitro

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F18%3A00067624" target="_blank" >RIV/00159816:_____/18:00067624 - isvavai.cz</a>
Alternative codes found
RIV/68081707:_____/18:00488411 RIV/00216224:14310/18:00102435
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijbiomac.2017.08.131" target="_blank" >http://dx.doi.org/10.1016/j.ijbiomac.2017.08.131</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijbiomac.2017.08.131" target="_blank" >10.1016/j.ijbiomac.2017.08.131</a>

Result language
angličtina
Original language name
Absence of differences among low, middle, and high molecular weight hyaluronan in activating murine immune cells in vitro
Original language description
Hyaluronan (HA) effects on immune response are suggested to be dependent on HA molecular weight (MW), as low MW HA should activate immune cells in contrast to high MW HA. However, some current studies do not support this conception and emphasize the importance of the form of preparation of HA, particularly with respect to its purity and origin. We compared the activation of mouse immune cells by HA samples (100 kDa, 500 kDa, and 997 kDa) prepared from HA originating from rooster comb, and HA samples (71 kDa, 500 kDa, and 1000 kDa) prepared from pharmacological grade HA originating from Streptococcus equi. Interestingly, in contrast to established theory, only middle and high MW HA originating from rooster comb induced the production of tumor necrosis factor-α by macrophages and in whole blood. Further, all tested preparations of HA failed to induce the expression of inducible nitric oxide synthase, the production of nitric oxide, or the expression of cyclooxygenase 2 in macrophages and splenocytes. Importantly, all HA samples originating from rooster comb were found to be contaminated by endotoxin (up to 1.23 EU/ml). Hence, low MW HA did not reveal itself to have significantly higher immunostimulatory activity compared to HA of higher MW.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10608 - Biochemistry and molecular biology

Project
<a href="/en/project/LQ1605" target="_blank" >LQ1605: Translational Medicine</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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