Abstract
Ethno pharmacological relevance
The study explores the anti-inflammatory activity of components present in fractions obtained from leaves of Hippophae rhamnoides in mouse peritoneal macrophages.
Aim of the study
Immunomodulators salvage the immune response by enhancing or reducing its capacity to the required level. Plant extracts are extensively used as immunomodulators because of their easy availability, simple methods of preparation and minimum side effects with maximum efficacy.
Materials and methods
The present study was conducted to assess the immunomodulatory activities of phyto constituents present in Seabuckthorn leaves. The aqueous–alcoholic leaf extract was subjected to successive and parallel extraction in the presence of polar and non-polar solvents for fractionation of compounds. Based on the yield, three fractions were selected viz. parallel methanol (PM), successive chloroform (SC) and successive methanol (SM) and screened for in vitro immunomodulatory activities. Peritoneal macrophages were isolated from Balb/c mice and cultured with or without LPS to evaluate the immunomodulatory effect of the three fractions on cell viability, hemolytic activity, nitric oxide (NO) production, cytokine levels, iNOS and COX-2 expressions.
Results
The results revealed that none of the three fractions induced hemolysis. Cells treated with PM fraction significantly suppressed LPS-induced NO production and pro-inflammatory cytokines such as TNF-α, IL-6 and IFN-γ as compared to SC and SM treatment. The iNOS and COX-2 expressions were also significantly reduced after treatment with PM fraction.
Conclusions
The decrease in LPS-induced NO production, pro-inflammatory cytokine secretion, iNOS and COX-2 expression signifies anti-inflammatory properties of PM fraction containing tannins, proteins and carbohydrate groups. Hence, this plant-derived immunomodulator can be used as a therapeutic agent in inflammatory diseases.
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Change history
09 May 2017
An erratum to this article has been published.
Abbreviations
- BSA:
-
Bovine serum albumin
- COX-2:
-
Cycloxygenase-2
- DMSO:
-
Dimethyl sulfoxide
- EDTA:
-
Ethylene diamine tetra acetic acid
- ELISA:
-
Enzyme linked immuno assay
- FBS:
-
Fetal bovine serum
- FCS:
-
Fetal calf serum
- HPLC:
-
High-pressure thin layer chromatography
- HPTLC:
-
High-performance thin layer chromatography
- HRP:
-
Horseradish peroxidase
- IFN-γ:
-
Interferon-γ
- IL-1β:
-
Interleukin-1 beta
- IL-4:
-
Interleukin-4
- IL-6:
-
Interlukin-6
- iNOS:
-
Inducible nitric oxide synthase
- LPS:
-
Lipopolysacchride
- MTT:
-
(3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide)
- NO:
-
Nitric oxide
- PBMC:
-
Peripheral blood mononuclear cell
- PBS:
-
Phosphate buffer saline
- PM:
-
Parallel methanol extract
- PVDF:
-
Polyvinylidene fluoride
- SC:
-
Successive chloroform extract
- SDS PAGE:
-
Sodium dodecyl sulfate polyacrylamide gel electrophoresis
- SM:
-
Successive methanol extract
- TLC:
-
Thin layer chromatography
- TMB:
-
3,3′5,5′-Tetramethylbenzidine
- TNF-α:
-
Tumor necrosis factor-α
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Acknowledgements
Himanshi thanks UGC for the financial support in the form of Senior Research Fellowship. The Defence R&D Organization (DRDO) is greatly acknowledged for the funding of the project. The authors thank Mr. Bhagwat Singh (Experimental Animals Facility) for providing experimental animals.
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The incorrect author group was published in the original version. It has been corrected and updated now.
An erratum to this article is available at https://doi.org/10.1007/s10787-017-0353-0.
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Tanwar, H., Shweta, Singh, D. et al. Anti-inflammatory activity of the functional groups present in Hippophae rhamnoides (Seabuckthorn) leaf extract. Inflammopharmacol 26, 291–301 (2018). https://doi.org/10.1007/s10787-017-0345-0
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DOI: https://doi.org/10.1007/s10787-017-0345-0