The Impact of Silymarin on Inflammation and Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Numerous studies have investigated into the antioxidant and anti-inflammatory properties of silymarin, as well as its ability to reduce reactive oxygen species and inflammation biomarkers. The effect of silymarin on inflammation and oxidative stress was investigated using the keywords “milk thistle”...

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Main Authors: Mahdi Vajdi, Shaghayegh Adeli, Arash Karimi, Vahid Asghariazar, Arezoo Moini Jazani, Ramin Nasimidoost Azgomi
Format: Article
Language:English
Published: Wiley 2025-01-01
Series:International Journal of Clinical Practice
Online Access:http://dx.doi.org/10.1155/ijcp/3985207
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author Mahdi Vajdi
Shaghayegh Adeli
Arash Karimi
Vahid Asghariazar
Arezoo Moini Jazani
Ramin Nasimidoost Azgomi
author_facet Mahdi Vajdi
Shaghayegh Adeli
Arash Karimi
Vahid Asghariazar
Arezoo Moini Jazani
Ramin Nasimidoost Azgomi
author_sort Mahdi Vajdi
collection DOAJ
description Numerous studies have investigated into the antioxidant and anti-inflammatory properties of silymarin, as well as its ability to reduce reactive oxygen species and inflammation biomarkers. The effect of silymarin on inflammation and oxidative stress was investigated using the keywords “milk thistle” OR “Silybum marianum” OR “Silybum” OR “silymarin” OR “Silibinin” AND “MDA” OR “Malondialdehyde” OR “TAC” OR “total antioxidant capacity” OR “IL-10” OR “Interleukin-10” OR “IL-6” OR “Interleukin-6” OR “TNF-α” OR “tumor necrosis factor alpha” on the Web of Science, Scopus, Embase, PubMed, and Cochrane Library, up until March 2023. Data were combined using a random-effects model, and the weighted/standardized mean differences (WMDs/SMDs) with a 95% confidence interval (CI) were used as the overall effect size. Our meta-analysis indicated that silymarin supplementation resulted in a significant decrease in levels of C-reactive protein (CRP) (WMD: −3.39 mg/L, 95% CI: −5.99, −0.79, p=0.01) and malondialdehyde (MDA) (SMD: −1.69, 95% CI: −2.62, −0.76, p<0.001). Furthermore, silymarin significantly increases IL-10 (WMD: 2.03 pg/mL; 95% CI: 1.04, 3.01, p<0.001), superoxide dismutase (SOD) (SMD: 3.39, 95% CI: 1.42, 5.37, p=0.001), and glutathione peroxidase (GPx) (SMD: 1.94; 95% CI, 0.89 to 2.99; p<0.001) level. However, silymarin supplementation did not have significant effects on TAC (SMD: 2.91; 95% CI: −0.30, 6.11, p=0.076) and IL-6 (WMD: −0.70 pg/mL; 95% CI: −1.42, 0.02, p<0.056) level. Silymarin supplementation may significantly improve oxidative stress and inflammation in adults by decreasing CRP and MDA and increasing IL-10, SOD, and GPx. However, additional studies with longer study periods are required to ascertain the long-term effects of silymarin on oxidative stress and chronic inflammation.
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spelling doaj-art-faa6625328d246a7a5fe25447b382c0c2025-02-01T00:00:02ZengWileyInternational Journal of Clinical Practice1742-12412025-01-01202510.1155/ijcp/3985207The Impact of Silymarin on Inflammation and Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled TrialsMahdi Vajdi0Shaghayegh Adeli1Arash Karimi2Vahid Asghariazar3Arezoo Moini Jazani4Ramin Nasimidoost Azgomi5Department of Community NutritionDepartment of Biochemistry and Diet TherapyNutrition Research CenterDepartment of Medical GeneticsTraditional Medicine and Hydrotherapy Research CenterTraditional Medicine and Hydrotherapy Research CenterNumerous studies have investigated into the antioxidant and anti-inflammatory properties of silymarin, as well as its ability to reduce reactive oxygen species and inflammation biomarkers. The effect of silymarin on inflammation and oxidative stress was investigated using the keywords “milk thistle” OR “Silybum marianum” OR “Silybum” OR “silymarin” OR “Silibinin” AND “MDA” OR “Malondialdehyde” OR “TAC” OR “total antioxidant capacity” OR “IL-10” OR “Interleukin-10” OR “IL-6” OR “Interleukin-6” OR “TNF-α” OR “tumor necrosis factor alpha” on the Web of Science, Scopus, Embase, PubMed, and Cochrane Library, up until March 2023. Data were combined using a random-effects model, and the weighted/standardized mean differences (WMDs/SMDs) with a 95% confidence interval (CI) were used as the overall effect size. Our meta-analysis indicated that silymarin supplementation resulted in a significant decrease in levels of C-reactive protein (CRP) (WMD: −3.39 mg/L, 95% CI: −5.99, −0.79, p=0.01) and malondialdehyde (MDA) (SMD: −1.69, 95% CI: −2.62, −0.76, p<0.001). Furthermore, silymarin significantly increases IL-10 (WMD: 2.03 pg/mL; 95% CI: 1.04, 3.01, p<0.001), superoxide dismutase (SOD) (SMD: 3.39, 95% CI: 1.42, 5.37, p=0.001), and glutathione peroxidase (GPx) (SMD: 1.94; 95% CI, 0.89 to 2.99; p<0.001) level. However, silymarin supplementation did not have significant effects on TAC (SMD: 2.91; 95% CI: −0.30, 6.11, p=0.076) and IL-6 (WMD: −0.70 pg/mL; 95% CI: −1.42, 0.02, p<0.056) level. Silymarin supplementation may significantly improve oxidative stress and inflammation in adults by decreasing CRP and MDA and increasing IL-10, SOD, and GPx. However, additional studies with longer study periods are required to ascertain the long-term effects of silymarin on oxidative stress and chronic inflammation.http://dx.doi.org/10.1155/ijcp/3985207
spellingShingle Mahdi Vajdi
Shaghayegh Adeli
Arash Karimi
Vahid Asghariazar
Arezoo Moini Jazani
Ramin Nasimidoost Azgomi
The Impact of Silymarin on Inflammation and Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
International Journal of Clinical Practice
title The Impact of Silymarin on Inflammation and Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_full The Impact of Silymarin on Inflammation and Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_fullStr The Impact of Silymarin on Inflammation and Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_full_unstemmed The Impact of Silymarin on Inflammation and Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_short The Impact of Silymarin on Inflammation and Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_sort impact of silymarin on inflammation and oxidative stress a systematic review and meta analysis of randomized controlled trials
url http://dx.doi.org/10.1155/ijcp/3985207
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