Mechanisms of Bioactivities of Fucoidan from the Brown Seaweed <i>Fucus vesiculosus</i> L. of the Barents Sea
The aim of this study was to elucidate some mechanisms of radical scavenging and the anti-inflammatory, anti-hyperglycemic, and anti-coagulant bioactivities of high molecular weight fucoidan from <i>Fucus vesiculosus</i> in several in vitro models. Fucoidan has displayed potent 1, 1-diph...
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MDPI AG
2020-05-01
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| Series: | Marine Drugs |
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| Online Access: | https://www.mdpi.com/1660-3397/18/5/275 |
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| author | Olga N. Pozharitskaya Ekaterina D. Obluchinskaya Alexander N. Shikov |
| author_facet | Olga N. Pozharitskaya Ekaterina D. Obluchinskaya Alexander N. Shikov |
| author_sort | Olga N. Pozharitskaya |
| collection | DOAJ |
| description | The aim of this study was to elucidate some mechanisms of radical scavenging and the anti-inflammatory, anti-hyperglycemic, and anti-coagulant bioactivities of high molecular weight fucoidan from <i>Fucus vesiculosus</i> in several in vitro models. Fucoidan has displayed potent 1, 1-diphenyl-2-picryl hydrazil radical scavenging and reduction power activities. It significantly inhibits the cyclooxygenase-2 (COX-2) enzyme (IC<sub>50</sub> 4.3 μg mL<sup>−1</sup>) with a greater selectivity index (lg(IC<sub>80</sub> COX-2/IC<sub>80</sub>COX-1), −1.55) than the synthetic non-steroidal anti-inflammatory drug indomethacin (lg(IC<sub>80</sub> COX-2/IC<sub>80</sub>COX-1), −0.09). A concentration-dependent inhibition of hyaluronidase enzyme with an IC<sub>50</sub> of 2.9 μg mL<sup>−1</sup> was observed. Fucoidan attenuated the lipopolysaccharide-induced expression of mitogen-activated protein kinase p38. Our findings suggest that the inhibition of dipeptidyl peptidase-IV (DPP-IV) (IC<sub>50</sub> 1.11 μg mL<sup>−1</sup>) is one of the possible mechanisms involved in the anti-hyperglycemic activity of fucoidan. At a concentration of 3.2 μg mL<sup>−1</sup>, fucoidan prolongs the activated partial thromboplastin time and thrombin time by 1.5-fold and 2.5-fold compared with a control, respectively. A significant increase of prothrombin time was observed after the concentration of fucoidan was increased above 80 μg mL<sup>−1</sup>. This evidenced that fucoidan may have an effect on intrinsic/common pathways and little effect on the extrinsic mechanism. This study sheds light on the multiple pathways of the bioactivities of fucoidan. As far as we know, the inhibition of hyaluronidase and DPP-IV by high molecular fucoidan was studied for the first time in this work. Our results and literature data suggest that molecular weight, sulfate content, fucose content, and polyphenols may contribute to these activities. It seems that high molecular weight fucoidan has promising therapeutic applications in different pharmacological settings. Anti-oxidant, anti-inflammatory and anti-coagulant drugs have been used for the management of complications of COVID19. Taken as a whole, fucoidan could be considered as a prospective candidate for the treatment of patients with COVID19; however, additional research in this field is required. |
| first_indexed | 2024-03-10T19:39:04Z |
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| language | English |
| last_indexed | 2024-03-10T19:39:04Z |
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| spelling | doaj.art-dba15239b2964a87aaa87ad38df1a3812023-11-20T01:26:44ZengMDPI AGMarine Drugs1660-33972020-05-0118527510.3390/md18050275Mechanisms of Bioactivities of Fucoidan from the Brown Seaweed <i>Fucus vesiculosus</i> L. of the Barents SeaOlga N. Pozharitskaya0Ekaterina D. Obluchinskaya1Alexander N. Shikov2Murmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), Vladimirskaya, 17, 183010 Murmansk, RussiaMurmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), Vladimirskaya, 17, 183010 Murmansk, RussiaMurmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), Vladimirskaya, 17, 183010 Murmansk, RussiaThe aim of this study was to elucidate some mechanisms of radical scavenging and the anti-inflammatory, anti-hyperglycemic, and anti-coagulant bioactivities of high molecular weight fucoidan from <i>Fucus vesiculosus</i> in several in vitro models. Fucoidan has displayed potent 1, 1-diphenyl-2-picryl hydrazil radical scavenging and reduction power activities. It significantly inhibits the cyclooxygenase-2 (COX-2) enzyme (IC<sub>50</sub> 4.3 μg mL<sup>−1</sup>) with a greater selectivity index (lg(IC<sub>80</sub> COX-2/IC<sub>80</sub>COX-1), −1.55) than the synthetic non-steroidal anti-inflammatory drug indomethacin (lg(IC<sub>80</sub> COX-2/IC<sub>80</sub>COX-1), −0.09). A concentration-dependent inhibition of hyaluronidase enzyme with an IC<sub>50</sub> of 2.9 μg mL<sup>−1</sup> was observed. Fucoidan attenuated the lipopolysaccharide-induced expression of mitogen-activated protein kinase p38. Our findings suggest that the inhibition of dipeptidyl peptidase-IV (DPP-IV) (IC<sub>50</sub> 1.11 μg mL<sup>−1</sup>) is one of the possible mechanisms involved in the anti-hyperglycemic activity of fucoidan. At a concentration of 3.2 μg mL<sup>−1</sup>, fucoidan prolongs the activated partial thromboplastin time and thrombin time by 1.5-fold and 2.5-fold compared with a control, respectively. A significant increase of prothrombin time was observed after the concentration of fucoidan was increased above 80 μg mL<sup>−1</sup>. This evidenced that fucoidan may have an effect on intrinsic/common pathways and little effect on the extrinsic mechanism. This study sheds light on the multiple pathways of the bioactivities of fucoidan. As far as we know, the inhibition of hyaluronidase and DPP-IV by high molecular fucoidan was studied for the first time in this work. Our results and literature data suggest that molecular weight, sulfate content, fucose content, and polyphenols may contribute to these activities. It seems that high molecular weight fucoidan has promising therapeutic applications in different pharmacological settings. Anti-oxidant, anti-inflammatory and anti-coagulant drugs have been used for the management of complications of COVID19. Taken as a whole, fucoidan could be considered as a prospective candidate for the treatment of patients with COVID19; however, additional research in this field is required.https://www.mdpi.com/1660-3397/18/5/275fucoidancyclooxygenasedipeptidyl peptidase IVanti-inflammatoryanti-hyperglycemicanti-coagulant |
| spellingShingle | Olga N. Pozharitskaya Ekaterina D. Obluchinskaya Alexander N. Shikov Mechanisms of Bioactivities of Fucoidan from the Brown Seaweed <i>Fucus vesiculosus</i> L. of the Barents Sea Marine Drugs fucoidan cyclooxygenase dipeptidyl peptidase IV anti-inflammatory anti-hyperglycemic anti-coagulant |
| title | Mechanisms of Bioactivities of Fucoidan from the Brown Seaweed <i>Fucus vesiculosus</i> L. of the Barents Sea |
| title_full | Mechanisms of Bioactivities of Fucoidan from the Brown Seaweed <i>Fucus vesiculosus</i> L. of the Barents Sea |
| title_fullStr | Mechanisms of Bioactivities of Fucoidan from the Brown Seaweed <i>Fucus vesiculosus</i> L. of the Barents Sea |
| title_full_unstemmed | Mechanisms of Bioactivities of Fucoidan from the Brown Seaweed <i>Fucus vesiculosus</i> L. of the Barents Sea |
| title_short | Mechanisms of Bioactivities of Fucoidan from the Brown Seaweed <i>Fucus vesiculosus</i> L. of the Barents Sea |
| title_sort | mechanisms of bioactivities of fucoidan from the brown seaweed i fucus vesiculosus i l of the barents sea |
| topic | fucoidan cyclooxygenase dipeptidyl peptidase IV anti-inflammatory anti-hyperglycemic anti-coagulant |
| url | https://www.mdpi.com/1660-3397/18/5/275 |
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