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Jaffar HM, Al‐Asmari F, Khan FA, Rahim MA, Zongo E. Silymarin: Unveiling its pharmacological spectrum and therapeutic potential in liver diseases-A comprehensive narrative review. Food Sci Nutr 2024; 12:3097-3111. [PMID: 38726410 PMCID: PMC11077231 DOI: 10.1002/fsn3.4010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 05/12/2024] Open
Abstract
Liver diseases, encompassing conditions such as cirrhosis, present a substantial global health challenge with diverse etiologies, including viral infections, alcohol consumption, and non-alcoholic fatty liver disease (NAFLD). The exploration of natural compounds as therapeutic agents has gained traction, notably the herbal remedy milk thistle (Silybum marianum), with its active extract, silymarin, demonstrating remarkable antioxidant and hepatoprotective properties in extensive preclinical investigations. It can protect healthy liver cells or those that have not yet sustained permanent damage by reducing oxidative stress and mitigating cytotoxicity. Silymarin, a natural compound with antioxidant properties, anti-inflammatory effects, and antifibrotic activity, has shown potential in treating liver damage caused by alcohol, NAFLD, drug-induced toxicity, and viral hepatitis. Legalon® is a top-rated medication with excellent oral bioavailability, effective absorption, and therapeutic effectiveness. Its active component, silymarin, has antioxidant and hepatoprotective properties, Eurosil 85® also, a commercial product, has lipophilic properties enhanced by special formulation processes. Silymarin, during clinical trials, shows potential improvements in liver function, reduced mortality rates, and alleviation of symptoms across various liver disorders, with safety assessments showing low adverse effects. Overall, silymarin emerges as a promising natural compound with multifaceted hepatoprotective properties and therapeutic potential in liver diseases.
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Affiliation(s)
- Hafiza Madiha Jaffar
- University Institute of Diet & Nutritional Sciences, Faculty of Allied Health SciencesThe University of LahoreLahorePakistan
| | - Fahad Al‐Asmari
- Department of Food and Nutrition Sciences, College of Agricultural and Food SciencesKing Faisal UniversityAl‐AhsaSaudi Arabia
| | - Faima Atta Khan
- University Institute of Diet & Nutritional Sciences, Faculty of Allied Health SciencesThe University of LahoreLahorePakistan
- Department of Food Science, Faculty of Life SciencesGovernment College UniversityFaisalabadPakistan
| | - Muhammad Abdul Rahim
- Department of Food Science, Faculty of Life SciencesGovernment College UniversityFaisalabadPakistan
- Department of Food Science & Nutrition, Faculty of Medicine and Allied Health SciencesTimes InstituteMultanPakistan
| | - Eliasse Zongo
- Laboratoire de Recherche et d'Enseignement en Santé et Biotechnologies AnimalesUniversité Nazi BONIBobo DioulassoBurkina Faso
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Bahari H, Shahraki Jazinaki M, Rashidmayvan M, Taheri S, Amini MR, Malekahmadi M. The effects of silymarin consumption on inflammation and oxidative stress in adults: a systematic review and meta-analysis. Inflammopharmacology 2024; 32:949-963. [PMID: 38372848 DOI: 10.1007/s10787-023-01423-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 12/24/2023] [Indexed: 02/20/2024]
Abstract
BACKGROUND Owing to the rich phytochemical content of Silymarin, it may effectively manage inflammation and oxidative stress. We, therefore, aimed to examine the existing evidence on the effect of Silymarin consumption on inflammation and oxidative stress factors by conducting a systematic review and meta-analysis of randomized controlled trials. METHODS A systematic literature search up to September 2023 was completed in PubMed/Medline, Scopus, and Web of Science, to identify eligible RCTs. Heterogeneity tests of the selected trials were performed using the I2 statistic. Random effects models were assessed based on the heterogeneity tests, and pooled data were determined as weighted mean differences with a 95% confidence interval. RESULTS Fifteen RCTs were included in this meta-analysis. Our findings showed that Silymarin consumption significantly decreased CRP (WMD, - 0.50 mg/L; 95% CI, (- 0.95 to - 0.04); p = 0.03), MDA (WMD, - 1.19 nmol/mL; 95% CI, (- 1.99 to - 0.38); p = 0.004), and IL-6 (WMD, - 0.44 pg/ml; 95% CI, (- 0.75 to - 0.12); p = 0.006). Silymarin consumption had no significant effects on IL-10, TAC, and GSH. A significant non-linear relationship was observed between the duration of the intervention and MDA changes. CONCLUSIONS Silymarin can help reduce inflammation in patients with diabetes and thalassemia by reducing MDA as an oxidative stress marker and CRP and IL-6 as inflammatory markers.
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Affiliation(s)
- Hossein Bahari
- Transplant Research Center, Clinical Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mostafa Shahraki Jazinaki
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Rashidmayvan
- Department of Nutrition, Food Sciences and Clinical Biochemistry, School of Medicine, Social Determinants of Health Research Center, Gonabad University of Medical Science, Gonabad, Iran
| | - Shaghayegh Taheri
- Department of Clinical Biochemistry, School of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Mohammad Reza Amini
- Student Research Committee, Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Nutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahsa Malekahmadi
- Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.
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Dostál Z, Zholobenko AV, Přichystalová H, Gottschalk B, Valentová K, Malli R, Modrianský M. Quercetin protects cardiomyoblasts against hypertonic cytotoxicity by abolishing intracellular Ca 2+ elevations and mitochondrial depolarisation. Biochem Pharmacol 2024; 222:116094. [PMID: 38423187 DOI: 10.1016/j.bcp.2024.116094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 01/31/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND AND AIM Osmotic changes represent a burden for the body and their limitation would be beneficial. We hypothesized that ubiquitous natural compounds could guard against cytotoxic effects of osmotic stress. We evaluated the anti-hypertonic mechanism of quercetin and 2,3-dehydrosilybin in H9c2 cells in vitro. EXPERIMENTAL PROCEDURE Protective effect of both compounds was determined by neutral red assay, cell apoptosis was estimated by measuring caspase-3 activity and verified by western blot and annexin V assay. Phosphorylation level of selected proteins was also detected. Mitochondrial membrane potential was evaluated using dye JC-1. Ca2+ signals were evaluated using genetically encoded fluorescent Ca2+ biosensor GCaMP7f. Formation of reactive oxygen species was measured using an oxidant-sensing probe dihydrofluorescein diacetate. KEY RESULTS Quercetin protected H9c2 cells against hypertonic stress-induced cell death. We observed a significant increase in intracellular Ca2+ levels ([Ca2+]cyto) when cells originally placed in a hypertonic solution were returned to a normotonic environment. Quercetin was found to prevent this increase in [Ca2+]cyto and also the depolarization of mitochondrial membrane potential. CONCLUSIONS AND IMPLICATIONS Quercetin, but not 2,3-dehydrosilybin, reduced adverse effects of osmotic stress mainly by dampening the elevation of [Ca2+]cyto and mitochondrial Ca2+ overload. This may consequently prevent MPTP pore opening and activation of apoptosis.
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Affiliation(s)
- Z Dostál
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Olomouc, Czech Republic
| | - A V Zholobenko
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Olomouc, Czech Republic
| | - H Přichystalová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Olomouc, Czech Republic
| | - B Gottschalk
- Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - K Valentová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 142 20 Prague, Czech Republic
| | - R Malli
- Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed Graz, 8010 Graz, Austria
| | - M Modrianský
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Olomouc, Czech Republic.
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Surai PF, Surai A, Earle-Payne K. Silymarin and Inflammation: Food for Thoughts. Antioxidants (Basel) 2024; 13:98. [PMID: 38247522 PMCID: PMC10812610 DOI: 10.3390/antiox13010098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/07/2024] [Accepted: 01/13/2024] [Indexed: 01/23/2024] Open
Abstract
Inflammation is a vital defense mechanism, creating hostile conditions for pathogens, preventing the spread of tissue infection and repairing damaged tissues in humans and animals. However, when inflammation resolution is delayed or compromised as a result of its misregulation, the process proceeds from the acute phase to chronic inflammation, leading to the development of various chronic illnesses. It is proven that redox balance disturbances and oxidative stress are among major factors inducing NF-κB and leading to over-inflammation. Therefore, the anti-inflammatory properties of various natural antioxidants have been widely tested in various in vitro and in vivo systems. Accumulating evidence indicates that silymarin (SM) and its main constituent silibinin/silybin (SB) have great potential as an anti-inflammation agent. The main anti-inflammatory mechanism of SM/SB action is attributed to the inhibition of TLR4/NF-κB-mediated signaling pathways and the downregulated expression of pro-inflammatory mediators, including TNF-α, IL-1β, IL-6, IL-12, IL-23, CCL4, CXCL10, etc. Of note, in the same model systems, SM/SB was able to upregulate anti-inflammatory cytokines (IL-4, IL-10, IL-13, TGF-β, etc.) and lipid mediators involved in the resolution of inflammation. The inflammatory properties of SM/SB were clearly demonstrated in model systems based on immune (macrophages and monocytes) and non-immune (epithelial, skin, bone, connective tissue and cancer) cells. At the same time, the anti-inflammatory action of SM/SB was confirmed in a number of in vivo models, including toxicity models, nonalcoholic fatty liver disease, ischemia/reperfusion models, stress-induced injuries, ageing and exercising models, wound healing and many other relevant model systems. It seems likely that the anti-inflammatory activities of SM/SB are key elements on the health-promoting properties of these phytochemicals.
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Affiliation(s)
- Peter F. Surai
- Vitagene and Health Research Centre, Bristol BS4 2RS, UK
- Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria
- Faculty of Agricultural and Environmental Sciences, Szent Istvan University, H-2103 Gödöllo, Hungary
- Biochemistry and Physiology Department, Saint-Petersburg State University of Veterinary Medicine, 196084 St. Petersburg, Russia
- Faculty of Veterinary Medicine, Sumy National Agrarian University, 40021 Sumy, Ukraine
- Faculty of Technology of Grain and Grain Business, Odessa National Technological University, 65039 Odessa, Ukraine
| | | | - Katie Earle-Payne
- NHS Greater Glasgow and Clyde, Renfrewshire Health and Social Care Centre, 10 Ferry Road, Renfrew PA4 8RU, UK
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Pluháčková H, Kudláčková B, Svojanovská L, Roth M, Bradáčová M, Bjelková M. Effect of Field Trial on Silymarin Complex Composition and Antioxidant Assessment of Milk Thistle (Silybum marianum L. Gaertner). PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2023; 78:691-697. [PMID: 37668769 DOI: 10.1007/s11130-023-01101-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/21/2023] [Indexed: 09/06/2023]
Abstract
Plant foods are receiving increasing attention as a valuable source of health beneficial compounds. Understanding the impact of growing conditions on the quality of milk thistle is critical for determining appropriate agro-ecological and agro-economic parameters for its production and, subsequently, food products rich in health-beneficial compounds. For this purpose, a randomized milk thistle cultivation trial was established in the experimental field of Agritec Plant Research Plc. in Šumperk, Czech Republic, and carried out for two subsequent growing seasons in 2020 and 2021. The milk thistle achenes, variety Mirel, were sown in the row width of 12.5, 25 and 37 cm; and the qualitative parameters of each field trial such as achenes yields, silymarin complex determination and also antioxidant assessment (total phenolic content, total flavonoids content, DPPH and ABTS radical scavenging activity) were evaluated. The environmental impact of the extraction process was reduced by using pressurized liquid extraction with 60% EtOH (v/v). The weather conditions during the trial as well as the row spacing of milk thistle sowing were revealed to have a significant influence on the evaluated parameters (p ≤ 0.05). The highest yields of evaluated parameters were obtained for the growing season 2021 and the row spacing of 37 cm.
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Affiliation(s)
- Helena Pluháčková
- Department of Crop Science, Breeding and Plant Medicine, Mendel University in Brno, Zemědělská 1, Brno, 613 00, Czech Republic
| | - Barbora Kudláčková
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 967/97, Brno, 602 00, Czech Republic.
| | - Lenka Svojanovská
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 967/97, Brno, 602 00, Czech Republic
| | - Michal Roth
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 967/97, Brno, 602 00, Czech Republic
| | - Marta Bradáčová
- Department of Crop Science, Breeding and Plant Medicine, Mendel University in Brno, Zemědělská 1, Brno, 613 00, Czech Republic
| | - Marie Bjelková
- Agritec Plant Research, Ltd., Zemědělská 2520/16, Šumperk, 787 01, Czech Republic
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Pferschy-Wenzig EM, Kunert O, Thumann T, Moissl-Eichinger C, Bauer R. Characterization of metabolites from milk thistle flavonolignans generated by human fecal microbiota. PHYTOCHEMISTRY 2023; 215:113834. [PMID: 37648045 DOI: 10.1016/j.phytochem.2023.113834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/18/2023] [Accepted: 08/20/2023] [Indexed: 09/01/2023]
Abstract
Silymarin, a mixture of diastereomeric and regioisomeric flavonolignans from milk thistle (Silybum marianum (L.) Gaertn.) fruits, is known to possess a panel of pharmacological activities. However, due to low water solubility and extensive phase II metabolism, the oral bioavailability of the flavonolignans is limited. Since their interaction with gut microbiome is likely due to their predominantly fecal excretion route, the biotransformation of milk thistle flavonolignans by gut microorganisms was studied. A 1:1 mixture of the two main silymarin flavonolignans silybins A and B was incubated in human fecal suspension from one donor for 24 h under anoxic conditions. Purification of the incubate allowed to isolate and structurally elucidate the two main metabolites as (2R, 3R)-2-{4-[2-(3,4-dihydroxy-phenyl)-(1R)-1-hydroxymethyl-ethoxy]-3-hydroxy-phenyl}-3,5,7-trihydroxy-chroman-4-one (a product of demethylation and dioxane ring cleavage) and demethylsilybin B. Furthermore, silymarin was incubated with human fecal suspension, and its biotransformation was monitored by means of LC-HRMS metabolite profiling. Apart from the two isolated and structurally elucidated metabolites, several types of biotransformation products could be annotated, including demethylation products, reduction/ring cleavage products, products of demethylation plus reduction/ring cleavage, as well as several low molecular weight aromatic metabolites. The potential pharmacological activities of these gut microbial metabolites deserve closer examination in the future.
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Affiliation(s)
- Eva-Maria Pferschy-Wenzig
- University of Graz, Institute of Pharmaceutical Sciences, Beethovenstraße 8, 8010, Graz, Austria; BioTechMed- Graz, Mozartgasse 12/II, 8010, Graz, Austria.
| | - Olaf Kunert
- University of Graz, Institute of Pharmaceutical Sciences, Beethovenstraße 8, 8010, Graz, Austria.
| | - Timo Thumann
- University of Graz, Institute of Pharmaceutical Sciences, Beethovenstraße 8, 8010, Graz, Austria.
| | - Christine Moissl-Eichinger
- Medical University Graz, Diagnostic & Research Institute of Hygiene, Microbiology and Environmental Medicine, Neue Stiftingtalstraße 6 (MC1.B.)/III, 8010, Graz, Austria; BioTechMed- Graz, Mozartgasse 12/II, 8010, Graz, Austria.
| | - Rudolf Bauer
- University of Graz, Institute of Pharmaceutical Sciences, Beethovenstraße 8, 8010, Graz, Austria; BioTechMed- Graz, Mozartgasse 12/II, 8010, Graz, Austria.
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Shah-Abadi ME, Ariaei A, Moradi F, Rustamzadeh A, Tanha RR, Sadigh N, Marzban M, Heydari M, Ferdousie VT. In Silico Interactions of Natural and Synthetic Compounds with Key Proteins Involved in Alzheimer's Disease: Prospects for Designing New Therapeutics Compound. Neurotox Res 2023; 41:408-430. [PMID: 37086338 PMCID: PMC10122091 DOI: 10.1007/s12640-023-00648-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/26/2022] [Accepted: 04/16/2023] [Indexed: 04/23/2023]
Abstract
Memory impairment is a result of multiple factors including amyloid-beta (Aβ) accumulation. Several receptors are mediated for Aβ transport and signaling. Moreover, blood lipids are involved in Aβ signaling pathway through these receptors. Mediated blood lipid level by statins aims to regulate Aβ signaling cascade. First, the structure of receptors was taken from the RCSB PDB database and prepared with MGLTools and AutoDock tool 4. Second, the ligand was prepared for docking through AutoDock Vina. The binding affinity was calculated, and the binding sites were determined through LigPlot+ software. Besides, pharmacokinetic properties were calculated through multiple software. Finally, a molecular dynamics (MD) simulation was conducted to evaluate ligands stability along with clustering analysis to evaluate proteins connection. Our molecular docking and dynamic analyses revealed silymarin as a potential inhibitor of acetylcholinesterase (AChE), P-glycoprotein, and angiotensin-converting enzyme 2 (ACE2) with 0.704, 0.85, and 0.83 Å for RMSD along with -114.27, -107.44, and -122.51 kcal/mol for free binding energy, respectively. Moreover, rosuvastatin and quercetin have more stability compared to silymarin and donepezil in complex with P-glycoprotein and ACE2, respectively. Eventually, based on clustering and pharmacokinetics analysis, silymarin, rosuvastatin, and quercetin are suggested to be involved in peripheral clearance of Aβ. The bioactivity effects of mentioned statins and antioxidants are predicted to be helpful in treating memory impairment in Alzheimer's disease (AD). Nevertheless, mentioned drug effect could be improved by nanoparticles to facilitate penetration of the blood-brain barrier (BBB).
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Affiliation(s)
| | - Armin Ariaei
- Student Research Committee, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Moradi
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Auob Rustamzadeh
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Rastegar Rahmani Tanha
- Department of Neurosurgery, School of Medicine, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Nader Sadigh
- Department of Emergency Medicine, Trauma and Injury Research Center, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohsen Marzban
- Student Research Committee, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Mahdi Heydari
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Tedesco DEA, Guerrini A. Use of Milk Thistle in Farm and Companion Animals: A Review. PLANTA MEDICA 2023; 89:584-607. [PMID: 36302565 DOI: 10.1055/a-1969-2440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Milk thistle, Silybum marianum, is a medicinal plant grown for its bioactive compounds with well-documented antioxidant and hepatoprotective properties. Milk thistle has a well-established pharmacological reputation for treatments of human liver disease, but it is also used in animals. This review summarizes the experimental evidence of milk thistle's effects on animals when administered as silymarin extract (feed additive) or a feed ingredient, if administered as seed or expeller/cake with the seed residue still containing the bioactive components. The use as a feed additive or feed ingredient is motivated by the complexity of silymarin registration as a veterinary drug. In farm animals, the drug improves the animals' performance and product quality and oxidative stability, supports liver function during the productive life-cycle, improves gut-health and morphology, and can reduce intestinal pathogens. In dogs and cats, the treatment is focused on acute and chronic liver diseases including the detoxification processes and support of drug treatments including chemotherapy. In equine athletes, milk seed cake showed positive effects and a faster return of cortisol to the resting values before exercise occurred. In aquaculture, it confirms its usefulness in supporting animal health and performance. In certain studies it is not clear what has been administered, and the composition and doses are not always clearly reported. A few studies reported no effects, but none reported problems connected to milk thistle administration. However, the overall picture shows that the use of milk thistle results in improved or restored health parameters or better animal performance.
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Silymarin for treatment of adults with nonalcoholic fatty liver disease. Cochrane Database Syst Rev 2023; 2023:CD015524. [PMCID: PMC10074766 DOI: 10.1002/14651858.cd015524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To evaluate the benefits and harms of silymarin in adults with nonalcoholic fatty liver disease (NAFLD).
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Tomou EM, Papakyriakopoulou P, Skaltsa H, Valsami G, Kadoglou NPE. Bio-Actives from Natural Products with Potential Cardioprotective Properties: Isolation, Identification, and Pharmacological Actions of Apigenin, Quercetin, and Silibinin. Molecules 2023; 28:molecules28052387. [PMID: 36903630 PMCID: PMC10005323 DOI: 10.3390/molecules28052387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of morbidity and mortality worldwide. As a result, pharmaceutical and non-pharmaceutical interventions modifying risk factors for CVDs are a top priority of scientific research. Non-pharmaceutical therapeutical approaches, including herbal supplements, have gained growing interest from researchers as part of the therapeutic strategies for primary or secondary prevention of CVDs. Several experimental studies have supported the potential effects of apigenin, quercetin, and silibinin as beneficial supplements in cohorts at risk of CVDs. Accordingly, this comprehensive review focused critically on the cardioprotective effects/mechanisms of the abovementioned three bio-active compounds from natural products. For this purpose, we have included in vitro, preclinical, and clinical studies associated with atherosclerosis and a wide variety of cardiovascular risk factors (hypertension, diabetes, dyslipidemia, obesity, cardiac injury, and metabolic syndrome). In addition, we attempted to summarize and categorize the laboratory methods for their isolation and identification from plant extracts. This review unveiled many uncertainties which are still unexplored, such as the extrapolation of experimental results to clinical practice, mainly due to the small clinical studies, heterogeneous doses, divergent constituents, and the absence of pharmacodynamic/pharmacokinetic analyses.
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Affiliation(s)
- Ekaterina-Michaela Tomou
- Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece
| | - Paraskevi Papakyriakopoulou
- Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece
| | - Helen Skaltsa
- Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece
| | - Georgia Valsami
- Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece
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Lněničková K, Vrba J, Kosina P, Papoušková B, Mekadim C, Mrázek J, Sova M, Sovová E, Valentová K, Křen V, Kouřilová P, Vrbková J, Ulrichová J. Metabolic profiling of silymarin constituents in urine and feces of healthy volunteers: A 90-day study. J Funct Foods 2023. [DOI: 10.1016/j.jff.2022.105391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Ghodousi M, Karbasforooshan H, Arabi L, Elyasi S. Silymarin as a preventive or therapeutic measure for chemotherapy and radiotherapy-induced adverse reactions: a comprehensive review of preclinical and clinical data. Eur J Clin Pharmacol 2023; 79:15-38. [PMID: 36450892 DOI: 10.1007/s00228-022-03434-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022]
Abstract
PURPOSE Thus far, silymarin has been examined in several studies for prevention or treatment of various chemotherapy or radiotherapy-induced adverse reactions. In this review, we try to collect all available human, animal, and pre-clinical data in this field. METHODS The search was done in Scopus, PubMed, Medline, and systematic reviews in the Cochrane database, using the following keywords: "Cancer," "Chemotherapy," "Radiotherapy," "Mucositis," "Nephrotoxicity," "Dermatitis," "Ototoxicity," "Cardiotoxicity," "Nephrotoxicity," "Hepatotoxicity," "Reproductive system," "Silybum marianum," "Milk thistle," and "Silymarin" and "Silybin." We included all relevant in vitro, in vivo, and human studies up to the date of publication. RESULTS Based on 64 included studies in this review, silymarin is considered a safe and well-tolerated compound, with no known clinical drug interaction. Notably, multiple adverse reactions of chemotherapeutic agents are effectively managed by its antioxidant, anti-apoptotic, anti-inflammatory, and anti-immunomodulatory properties. Clinical trials suggest that oral silymarin may be a promising adjuvant with cancer treatments, particularly against hepatotoxicity (n = 10), nephrotoxicity (n = 3), diarrhea (n = 1), and mucositis (n = 3), whereas its topical formulation can be particularly effective against radiodermatitis (n = 2) and hand-foot syndrome (HFS) (n = 1). CONCLUSION Further studies are required to determine the optimal dose, duration, and the best formulation of silymarin to prevent and/or manage chemotherapy and radiotherapy-induced complications.
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Affiliation(s)
- Mahsa Ghodousi
- Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hedyieh Karbasforooshan
- Department of Clinical Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Arabi
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
- Pharmaceutical Technology Institute, Nanotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Sepideh Elyasi
- Department of Clinical Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Enhanced bioavailability and hepatoprotective effect of silymarin by preparing silymarin-loaded solid dispersion formulation using freeze-drying method. Arch Pharm Res 2022; 45:743-760. [PMID: 36178580 DOI: 10.1007/s12272-022-01407-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 09/13/2022] [Indexed: 11/02/2022]
Abstract
This study aimed to develop a solid dispersion formulation of silymarin (Silymarin-SD) using freeze-drying method to enhance its oral bioavailability (BA) by inhibiting the intestinal first-pass effect and increasing its solubility and permeability. Silymarin-SD formulation (i.e., silymarin:tween 80:hydroxypropyl cellulose (HPC) = 1:1:3 (w/w/w) significantly increased silymarin permeability in the duodenum, jejunum, and ileum by decreasing the efflux ratio of silymarin and by inhibiting silymarin-glucuronidation activity, in which tween 80 played a crucial role. As a result, orally administered Silymarin-SD formulation increased plasma silymarin concentrations and decreased silymarin-glucuronide in rats compared with silymarin alone and silymmarin:D-α-tocopherol polyethylene glycol 1000 succinate (1:1, w/w) formulation. In addition to modulating intestinal first-pass effect, Silymarin-SD formulation showed a significantly higher cumulative dissolution for 120 min compared with that of silymarin from the physical mixture (PM) of the same composition as Silymarin-SD and silymarin alone; the relative BA of silymarin-SD increased to 215% and 589% compared with silymarin-PM and silymarin alone, respectively. This could be attributed to the amorphous status of the Silymarin-SD formulation without chemical interaction with excipients, such as tween 80 and HPC. Moreover, the hepatoprotective effect of Silymarin-SD in acetaminophen-induced acute hepatotoxicity, as estimated from the alanine aminotransferase and aspartate aminotransferase values, was superior to that of silymarin. In conclusion, the increase in the dissolution rate and intestinal permeability of silymarin, and the inhibition of silymarin-glucuronidation by the Silymarin-SD formulation, prepared using tween 80 and HPC, increased its plasma concentration and resulted in a superior hepatoprotective effect compared to silymarin.
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14
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Molaei S, Amiri F, Salimi R, Ferdowsi S, Bahadori M. Therapeutic effects of mesenchymal stem cells-conditioned medium derived from suspension cultivation or silymarin on liver failure mice. Mol Biol Rep 2022; 49:10315-10325. [PMID: 36097106 DOI: 10.1007/s11033-022-07785-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 07/08/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Common treatments of liver disease failed to meet all the needs in this important medical field. It results in an urgent need for proper some new adjuvant therapies. Mesenchymal stem cells (MSCs) and their derivatives are promising tools in this regard. We aimed to compare the Silymarin, as traditional treatment with mesenchymal stem cell conditioned medium (MSC-CM), as a novel strategy, both with therapeutic potentialities in term of liver failure (LF) treatment. METHODS AND RESULTS Mice models with liver failure were induced with CCl4 and were treated in the groups as follows: normal mice receiving DMEM-LG medium as control, LF-mice receiving DMEM-LG medium as sham, LF-mice receiving Silymarin as LF-SM, and LF-mice receiving MSC sphere CM as LF-MSC-CM. Biochemical, histopathological, molecular and protein level parameters were evaluated using blood and liver samples. Liver enzymes, MicroRNA-122 values as well as necrotic score were significantly lower in the LF-SM and LF-MSC-CM groups compared to sham. LF-SM showed significantly higher level of total antioxidant capacity and malondialdehyde than that of LF-MSC-CM groups. Sph-MSC-CM not only induced more down-regulated expression of fibrinogen-like protein 1 and receptor interacting protein kinases1 but also led to higher expression level of keratinocyte growth factor. LF-MSC-CM showed less mortality rate compared to other groups. CONCLUSIONS Hepato-protective potentialities of Sph-MSC-CM are comparable to those of Silymarin. More inhibition of necroptosis/ necrosis and inflammation might result in rapid liver repair in case of MSC-CM administration.
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Affiliation(s)
- Sedigheh Molaei
- Social Determinants of Health Research Center, Saveh University of Medical Sciences, Saveh, Iran
| | - Fatemeh Amiri
- Department of Medical Laboratory Sciences, School of Para Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Rasoul Salimi
- Department of Emergency Medicine, Besat Hospital, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Shirin Ferdowsi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Marzie Bahadori
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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15
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Křen V, Valentová K. Silybin and its congeners: from traditional medicine to molecular effects. Nat Prod Rep 2022; 39:1264-1281. [PMID: 35510639 DOI: 10.1039/d2np00013j] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Covering: 2015 up to 2022 (Feb)Silymarin, an extract of milk thistle (Silybum marianum) fruits, has been used in various medicinal applications since ancient times. A major component of silymarin is the flavonolignan silybin and its relatives isosilybin, silychristin, silydianin, 2,3-dehydrosilybin, and some others. Except for silydianin, they occur in nature as two stereomers. This review focuses on recent developments in chemistry, biosynthesis, modern advanced analytical methods, and transformations of flavonolignans specifically reflecting their chirality. Recently described chemotypes of S. marianum, but also the newest findings regarding the pharmacokinetics, hepatoprotective, antiviral, neuroprotective, and cardioprotective activity, modulation of endocrine functions, modulation of multidrug resistance, and safety of flavonolignans are discussed. A growing number of studies show that the respective diastereomers of flavonolignans have significantly different activities in anisotropic biological systems. Moreover, it is now clear that flavonolignans do not act as antioxidants in vivo, but as specific ligands of biological targets and therefore their chirality is crucial. Many controversies often arise, mainly due to the non-standard composition of this phytopreparation, the use of various undefined mixtures, the misattribution of silymarin vs. silybin, and also the failure to consider the chemistry of the respective components of silymarin.
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Affiliation(s)
- Vladimír Křen
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, CZ 14220, Czech Republic.
| | - Kateřina Valentová
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, CZ 14220, Czech Republic.
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16
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Holasová K, Křížkovská B, Hoang L, Dobiasová S, Lipov J, Macek T, Křen V, Valentová K, Ruml T, Viktorová J. Flavonolignans from silymarin modulate antibiotic resistance and virulence in Staphylococcus aureus. Biomed Pharmacother 2022; 149:112806. [PMID: 35303568 DOI: 10.1016/j.biopha.2022.112806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/25/2022] [Accepted: 03/07/2022] [Indexed: 11/25/2022] Open
Abstract
Antibiotic resistance is currently a serious health problem. Since the discovery of new antibiotics no longer seems to be a sufficient tool in the fight against multidrug-resistant infections, adjuvant (combination) therapy is gaining in importance as well as reducing bacterial virulence. Silymarin is a complex of flavonoids and flavonolignans known for its broad spectrum of biological activities, including its ability to modulate drug resistance in cancer. This work aimed to test eleven, optically pure silymarin flavonolignans for their ability to reverse the multidrug resistance phenotype of Staphylococcus aureus and reduce its virulence. Silybin A, 2,3-dehydrosilybin B, and 2,3-dehydrosilybin AB completely reversed antibiotic resistance at concentrations of 20 µM or less. Both 2,3-dehydrosilybin B and AB decreased the antibiotic-induced gene expression of representative efflux pumps belonging to the major facilitator (MFS), multidrug and toxic compound extrusion (MATE), and ATP-binding cassette (ABC) families. 2,3-Dehydrosilybin B also inhibited ethidium bromide accumulation and efflux in a clinical isolate whose NorA and MdeA overproduction was induced by antibiotics. Most of the tested flavonolignans reduced cell-to-cell communication on a tetrahydrofuran-borate (autoinducer-2) basis, with isosilychristin leading the way followed by 2,3-dehydrosilybin A and AB, which halved communication at 10 µM. Anhydrosilychristin was the only compound that reduced communication based on acyl-homoserine lactone (autoinducer 1), with an IC50 of 4.8 µM. Except for isosilychristin and anhydrosilychristin, all of the flavonolignans inhibited S. aureus surface colonization, with 2,3-dehydrosilybin A being the most active (IC50 10.6 µM). In conclusion, the selected flavonolignans, particularly derivatives of 2,3-dehydrosilybin B, 2,3-dehydrosilybin AB, and silybin A are non-toxic modulators of S. aureus multidrug resistance and can decrease the virulence of the bacterium, which deserves further detailed research.
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Affiliation(s)
- Kateřina Holasová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technická 3, Prague 166 28, Czech Republic.
| | - Bára Křížkovská
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technická 3, Prague 166 28, Czech Republic.
| | - Lan Hoang
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technická 3, Prague 166 28, Czech Republic.
| | - Simona Dobiasová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technická 3, Prague 166 28, Czech Republic.
| | - Jan Lipov
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technická 3, Prague 166 28, Czech Republic.
| | - Tomáš Macek
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technická 3, Prague 166 28, Czech Republic.
| | - Vladimír Křen
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 142 20 Prague, Czech Republic.
| | - Kateřina Valentová
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 142 20 Prague, Czech Republic.
| | - Tomáš Ruml
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technická 3, Prague 166 28, Czech Republic.
| | - Jitka Viktorová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technická 3, Prague 166 28, Czech Republic.
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17
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Deng M, Chen H, Xie L, Liu K, Zhang X, Li X. Tea saponins as natural emulsifiers and cryoprotectants to prepare silymarin nanoemulsion. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.113042] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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18
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Koltai T, Fliegel L. Role of Silymarin in Cancer Treatment: Facts, Hypotheses, and Questions. J Evid Based Integr Med 2022; 27:2515690X211068826. [PMID: 35018864 PMCID: PMC8814827 DOI: 10.1177/2515690x211068826] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/20/2021] [Accepted: 12/06/2021] [Indexed: 12/14/2022] Open
Abstract
The flavonoid silymarin extracted from the seeds of Sylibum marianum is a mixture of 6 flavolignan isomers. The 3 more important isomers are silybin (or silibinin), silydianin, and silychristin. Silybin is functionally the most active of these compounds. This group of flavonoids has been extensively studied and they have been used as hepato-protective substances for the mushroom Amanita phalloides intoxication and mainly chronic liver diseases such as alcoholic cirrhosis and nonalcoholic fatty liver. Hepatitis C progression is not, or slightly, modified by silymarin. Recently, it has also been proposed for SARS COVID-19 infection therapy. The biochemical and molecular mechanisms of action of these substances in cancer are subjects of ongoing research. Paradoxically, many of its identified actions such as antioxidant, promoter of ribosomal synthesis, and mitochondrial membrane stabilization, may seem protumoral at first sight, however, silymarin compounds have clear anticancer effects. Some of them are: decreasing migration through multiple targeting, decreasing hypoxia inducible factor-1α expression, inducing apoptosis in some malignant cells, and inhibiting promitotic signaling among others. Interestingly, the antitumoral activity of silymarin compounds is limited to malignant cells while the nonmalignant cells seem not to be affected. Furthermore, there is a long history of silymarin use in human diseases without toxicity after prolonged administration. The ample distribution and easy accessibility to milk thistle-the source of silymarin compounds, its over the counter availability, the fact that it is a weed, some controversial issues regarding bioavailability, and being a nutraceutical rather than a drug, has somehow led medical professionals to view its anticancer effects with skepticism. This is a fundamental reason why it never achieved bedside status in cancer treatment. However, in spite of all the antitumoral effects, silymarin actually has dual effects and in some cases such as pancreatic cancer it can promote stemness. This review deals with recent investigations to elucidate the molecular actions of this flavonoid in cancer, and to consider the possibility of repurposing it. Particular attention is dedicated to silymarin's dual role in cancer and to some controversies of its real effectiveness.
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Affiliation(s)
- Tomas Koltai
- Hospital del Centro Gallego de Buenos Aires, Buenos Aires, Argentina
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19
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Romanucci V, Giordano M, Pagano R, Zimbone S, Giuffrida ML, Milardi D, Zarrelli A, Di Fabio G. Investigation on the solid-phase synthesis of silybin prodrugs and their timed-release. Bioorg Med Chem 2021; 50:116478. [PMID: 34695708 DOI: 10.1016/j.bmc.2021.116478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 12/15/2022]
Abstract
Prodrugs are ingenious derivatives of therapeutic agents designed to improve the pharmacokinetic profile of the drug. Here, we report an efficient and regioselective solid phase approach for obtaining new prodrugs of 9″-silybins conjugated with 3'-ribonucleotide units (uridine and adenosine) as pro-moieties. Uridine and adenosine conjugates were obtained in good yields (41-50%), beginning with silibinin and its diastereomers (silybin A and silybin B), using a NovaSyn® support functionalized with an ad hoc linker, which allowed selective detachment of only the desired products. As expected, the solubility of both uridine and adenosine conjugates was higher than that of the parental natural product (5 mg/mL and 3 mg/mL for uridine and adenosine, respectively). Our investigations revealed that uridine conjugates were quickly cleaved by RNase A, releasing silybin drugs, even at low enzyme concentrations. No toxic effects were found for any ribonucleotide conjugate on differentiated neuroblastoma SH-SY5Y cells when tested at increasing concentrations. All results strongly encourage further investigations of uridine-silybin prodrugs as potential therapeutic agents for both oral and intravenous administration. The present synthetic approach represents a valuable strategy to the future design of new prodrugs with modified nucleoside pro-moieties to modulate the pharmacokinetics of silybins or different natural products with strong pharmacological activities but poor bioavailability.
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Affiliation(s)
- Valeria Romanucci
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, I-80126 Napoli, Italy
| | - Maddalena Giordano
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, I-80126 Napoli, Italy
| | - Rita Pagano
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, I-80126 Napoli, Italy
| | - Stefania Zimbone
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Sede Secondaria di Catania, Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Maria Laura Giuffrida
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Sede Secondaria di Catania, Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Danilo Milardi
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Sede Secondaria di Catania, Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Armando Zarrelli
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, I-80126 Napoli, Italy
| | - Giovanni Di Fabio
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, I-80126 Napoli, Italy.
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20
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Han J, Zhang J, Zhang C. Irinotecan-Induced Steatohepatitis: Current Insights. Front Oncol 2021; 11:754891. [PMID: 34707997 PMCID: PMC8542761 DOI: 10.3389/fonc.2021.754891] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 09/23/2021] [Indexed: 01/14/2023] Open
Abstract
The hepatotoxicity of irinotecan is drawing wide concern nowadays due to the widespread use of this chemotherapeutic against various solid tumors, particularly metastatic colorectal cancer. Irinotecan-induced hepatotoxicity mainly manifests as transaminase increase and steatosis with or without transaminase increase, and is accompanied by vacuolization, and lobular inflammation. Irinotecan-induced steatohepatitis (IIS) increases the risk of morbidity and mortality in patients with colorectal cancer liver metastasis (CRCLM). The major risks and predisposing factors for IIS include high body mass index (BMI) or obesity, diabetes, and high-fat diet. Mitochondrial dysfunction and autophagy impairment may be involved in the pathogenesis of IIS. However, there is currently no effective preventive or therapeutic treatment for this condition. Thus, the precise mechanisms underlying the pathogenesis of IIS should be deciphered for the development of therapeutic drugs. This review summarizes the current knowledge and research progress on IIS.
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Affiliation(s)
- Jun Han
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pharmacy, Affiliated Hospital of Jianghan University, Wuhan, China
| | | | - Chengliang Zhang
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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21
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Abstract
The natural diastereomeric mixture of silybins A and B is often used (and considered) as a single flavonolignan isolated from the fruit extract of milk thistle (Silybum marianum), silymarin. However, optically pure silybin diastereomers are required for the evaluation of their biological activity. The separation of silybin diastereomers by standard chromatographic methods is not trivial. Preparative chemoenzymatic resolution of silybin diastereomers has been published, but its optimization and scale-up are needed. Here we present a continuous flow reactor for the chemoenzymatic kinetic resolution of silybin diastereomers catalyzed by Candida antarctica lipase B (CALB) immobilized on acrylic resin beads (Novozym® 435). Temperature, flow rate, and starting material concentration were varied to determine optimal reaction conditions. The variables observed were conversion and diastereomeric ratio. Optimal conditions were chosen to allow kilogram-scale reactions and were determined to be −5 °C, 8 g/L silybin, and a flow rate of 16 mL/min. No significant carrier degradation was observed after approximately 30 cycles (30 days). Under optimal conditions and using a 1000 × 15 mm column, 20 g of silybin per day can be easily processed, yielding 6.7 and 5.6 g of silybin A and silybin B, respectively. Further scale-up depends only on the size of the reactor.
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22
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Křen V. Chirality Matters: Biological Activity of Optically Pure Silybin and Its Congeners. Int J Mol Sci 2021; 22:ijms22157885. [PMID: 34360650 PMCID: PMC8346157 DOI: 10.3390/ijms22157885] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 07/19/2021] [Indexed: 12/31/2022] Open
Abstract
This review focuses on the specific biological effects of optically pure silymarin flavo-nolignans, mainly silybins A and B, isosilybins A and B, silychristins A and B, and their 2,3-dehydro derivatives. The chirality of these flavonolignans is also discussed in terms of their analysis, preparative separation and chemical reactions. We demonstrated the specific activities of the respective diastereomers of flavonolignans and also the enantiomers of their 2,3-dehydro derivatives in the 3D anisotropic systems typically represented by biological systems. In vivo, silymarin flavonolignans do not act as redox antioxidants, but they play a role as specific ligands of biological targets, according to the "lock-and-key" concept. Estrogenic, antidiabetic, anticancer, antiviral, and antiparasitic effects have been demonstrated in optically pure flavonolignans. Potential application of pure flavonolignans has also been shown in cardiovascular and neurological diseases. Inhibition of drug-metabolizing enzymes and modulation of multidrug resistance activity by these compounds are discussed in detail. The future of "silymarin applications" lies in the use of optically pure components that can be applied directly or used as valuable lead structures, and in the exploration of their true molecular effects.
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Affiliation(s)
- Vladimír Křen
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
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