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1 "Seoyoung Kim"
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Original Article
Shilajit, a Natural Phytocomplex Acts as a Neuroprotective Agent Against Amyloid Beta-induced Cytotoxicity and Inflammation
Seoyoung Kim, Changon Seo, HyeJin Park, Jin Gwan Kwon, Jin Kyu Kim, Hyoun Jong Moon, Sunki Lim, Yujeong Gho, Wang Jun Lee, Yongmun Choi, Sanghun Lee
Perspect Integr Med. 2024;3(2):114-122.   Published online June 21, 2024
DOI: https://doi.org/10.56986/pim.2024.06.007
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AbstractAbstract PDFSupplementary Material
Background
Shilajit is a natural phytocomplex known for centuries in Ayurveda traditional medicine for its antioxidant, immunomodulatory, and neuroprotective properties. However, there is little published scientific evidence to support these acclaimed properties.
Methods
The safety, regarding the heavy metal content, component analysis, the neuroprotective effects and amyloid beta (Aβ)-induced cytotoxicity and inflammation of 3 samples of Shilajit derived from different geographical origins were assessed. Neuroprotective effects of Shilajit were examined using neuroblastoma cell lines (SH-SY5Y and IMR-32) and cell viability assays. The inhibitory effect on the proinflammatory cytokine derived from macrophage cells was assessed using bone marrow-derived macrophage cells in vitro and in a murine model of Aβ-induced inflammation (ex vivo analysis).
Results
The results showed that a daily dose of each Shilajit sample were within the permissible heavy metal limit established by the United States Food and Drug Administration. The 3 Shilajit samples alleviated Aβ-induced toxicity in neuronal cells. One sample derived from the Altai Mountains suppressed Aβ-induced processing of pro-interleukin (pro-IL)-1β into mature, biologically active IL-1β in macrophages. This Shilajit sample inhibited Aβ-induced production of the proinflammatory cytokine IL-1β in the brain (ex vivo analysis). In component analysis, this sample was enriched in salicyluric acid.
Conclusion
Shared and distinct properties were observed among the 3 Shilajit samples concerning their neuroprotective effects, and regarding safety, the daily dose of each Shilajit had a safe level of heavy metal content. Salicyluric acid in Shilajit may be important in mitigating Aβ-induced inflammatory cytokine but more research is necessary.

Perspect Integr Med : Perspectives on Integrative Medicine
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