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ORIGINAL ARTICLE
Year : 2018  |  Volume : 14  |  Issue : 58  |  Page : 534-540

Antioxidant and anti-inflammatory effects of a methanol extract from the marine sponge Hyrtios erectus


1 Department of Zoology, Voorhees College, Thiruvalluvar University, Vellore, Tamil Nadu; Bioinformatics Centre, Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
2 Department of Chemistry and Institute For Genomic Biology, University of Illinois, Urbana Champaign, Illinois, USA
3 Department of Zoology, Voorhees College, Thiruvalluvar University, Vellore, Tamil Nadu, India
4 Division of Fisheries Sciences, Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
5 Bioinformatics Centre; Department of Animal Sciences, Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India

Correspondence Address:
Arun Kumar De
Department of Animal Sciences, Central Island Agricultural Research Institute, Port Blair - 744 101, Andaman and Nicobar Islands
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/pm.pm_133_17

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Background: The marine environment, due to its phenomenal diversity, is a rich natural source of many biologically active compounds. Objective: Marine sponge Hyrtios erectus, collected from North Bay of South Andaman Sea, was screened for potential antioxidant and anti-inflammatory activities. Materials and Methods: The antioxidant activities of the methanol (MeOH) extract of the sponge at different concentrations (0–100 μg/mL) were determined by measuring the free radical-scavenging activities. The anti-inflammatory activities of the extract were determined by measuring the inhibitory effect of the extract on albumin denaturation and inducible nitric oxide (NO) production. Quantitative real-time polymerase chain reaction was used to investigate the effect of the sponge extract on the expression of eight proinflammatory cytokine genes. Results: Our results suggested that the MeOH extract of the sponge exhibited antioxidant activity against 2,2-diphenyl-1-picrylhydrazyl-free radicals, superoxide anions, and hydroxyl radicals. More than 50% inhibition (half inhibitory concentration) was recorded with concentration of 50 μg/mL of the sponge extract. Extract of the sponge at a concentration of 25 μg/mL inhibited NO production by a macrophage cell line in vitro by 91.22% ± 5.78%. The sponge extract induced downregulation of eight proinflammatory cytokine genes in breast cancer Michigan Cancer Foundation-7 cell line. Conclusion: The secondary metabolites present in the MeOH extract of the sponge showed the potential antioxidant and anti-inflammatory activities. Further studies are required to identify the bioactive compounds. Abbreviations used: DPPH: 2,2-diphenyl-1-picrylhydrazyl; DMEM: Dulbecco's modified eagle's medium; MTT: 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; EDTA: Ethylenediaminetetraacetic acid; NBT: Nitroblue tetrazolium; PMS: Phenazine methosulfate; DMSO: Dimethyl sulfoxide.


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