Cited by 24Natural Compounds in Disease TreatmentPhytochemical Studies and BioactivitiesNF-κB Signaling Pathways

Effects of 20-hydroxyecdysone, Leuzea carthamoides extracts, dexamethasone and their combinations on the NF-κ B activation in HeLa cells

Peschel, Wieland, Kump, Alfred, Prieto, José Maria·2011·Journal of Pharmacy and Pharmacology

Abstract

OBJECTIVES: The plant steroid 20-hydroxyecdysterone (20E) and 20E-containing extracts from Leuzea carthamoides (Willd.) DC are sold with claims of anabolic and immunomodulatory effects. Yet their effect on the activation of nuclear factor kappa B (NF-κB), a key player in immune response and cell fate, and their influence on the NF-κB-inhibiting activity of steroidal anti-inflammatory drugs is still unknown. METHODS: The ability of 20E, Leuzea extracts and selected steroidal/non-steroidal anti-inflammatory drugs to influence the activation of NF-κB was explored using, as the experimental model, human cervical cancer HeLa-IL-6 cells stably transfected with an IL-6-bound reporter gene. Effects on cell viability and proliferation were monitored (MTT assay). HPLC-DAD was used to establish links between chemical patterns of Leuzea extracts and their bioactivities. KEY FINDINGS: 20E inhibited NF-κB activation (IC50 31.8 µm) but was less active than other plant metabolites (xanthohumol 3.8 µm, withaferin A 1.4 µm). Leuzea extracts with high content in 20E had a fair activating effect, but in contrast, some extracts with low 20E content significantly inhibited NF-κB activation at IC50s ranging from 3.5 to 6.2 µg/ml. Combination tests confirmed that 20E does not explain the NF-κB modulation achieved by Leuzea extracts. The extracts but not 20E itself showed a significant modulation of the NF-κB inhibitory effect of dexamethasone. CONCLUSIONS: 20E is unlikely a major player in the NF-κB inhibitory effects displayed by some Leuzea extracts in vitro. If confirmed in vivo, caution should prevail towards marketed Leuzea extracts that are non-standardised or standardised on 20E only, since different starting materials and extracts may even cause opposite effects. More importantly, our results indicate the interaction potential of Leuzea with steroidal anti-inflammatory drugs.

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Crossref · 10.1111/j.2042-7158.2011.01349.x

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Authors
Peschel, W., Kump, A., & Prieto, J. M.
Affiliations
  • University of London (GB)
  • Botanische Arbeitsgemeinschaft am Oberösterreichischen Landesmuseum , Biologiezentrum, Linz,
Corresponding author
Peschel, Wieland
Venue
Journal of Pharmacy and Pharmacology
Published
2011-11-01
Volume
63
Issue
11
Pages
1483-1495
ISSN
  • 0022-3573 (ISSN-L)
  • 2042-7158
OpenAlex
W2119673735
Cited by
24
References
42
Citations by year
2025: 2 · 2024: 3 · 2023: 4 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 1 · 2015: 5 · 2014: 2 · 2013: 1 · 2012: 1
FWCI
3.42
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Pharmacy and Pharmacology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Natural Compounds in Disease Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Phytochemical Studies and Bioactivities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
Keywords
20-hydroxyecdysone, Leuzea carthamoides, NF-κB activation, dexamethasone, plant steroids, xanthohumol, withaferin A, HeLa cells, combined effects, immunomodulation
MeSH terms
Anti-Inflammatory Agents, Non-Steroidal, Dexamethasone, Drug Combinations, Ecdysterone, HeLa Cells, Humans, NF-kappa B, Plant Preparations, Leuzea

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