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Kızılaslan N, Aydın D, Sumbul O, Koroglu R, Aygun H. The effect of quercetin on absence epilepsy in WAG/Rij rats. Neurol Res 2023:1-7. [PMID: 36972421 DOI: 10.1080/01616412.2023.2194182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
AIM In the present study, the effect of quercetin, a powerful antioxidant flavonoid, on genetic absence epilepsy was studied in WAG/Rij rats. MATERIAL AND METHOD Tripolar electrodes were implanted into WAG/Rij rats. Basal electrocorticography (ECoG) was recorded following a recovery period. After basal ECoG recording, different doses of quercetin (QRC) (25, 50 and 100 mg/kg) were injected intraperitoneally (i.p.) for 30 days. ECoG recording was continued for 31 days, three hours a day. After recording, the rats were anesthetized and euthanized through cervical dislocation and their brains were excised. Biochemically, TNF-alpha, IL-6 and NO were studied in whole rat brains. RESULTS In WAG/Rij rats, low-dose quercetin (25 mg/kg) reduced the number and duration of spike-wave discharges (SWDs) compared to the control group. However, 50 and 100 mg/kg quercetin doses increased SWDs. Duration of SWDs was prolonged only with 100 mg/kg dose. None of the quercetin doses had any effect on average amplitude of SWDs. In addition, it was observed in biochemical analyses that 25 mg/kg quercetin reduced TNF-alpha, IL-6 and NO levels compared to the control group. While TNF-alpha and IL-6 levels in rat brains were not affected by 50 or 100 mg/kg doses, both doses were found to increase NO levels in rat brains. CONCLUSION Based on the results of the present study, 25 mg/kg low-dose quercetin may have reduced absence seizures by reducing proinflammatory cytokines and NO, but high-dose quercetin may have increased absence seizures through increasing the NO level. This contrasting effect of quercetin on absence seizures needs to be investigated by advanced mechanisms.
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Affiliation(s)
- Nildem Kızılaslan
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Tokat Gaziosmanpasa University, Tokat, Turkey
| | - Duygu Aydın
- Ankara Metropolitan Municipality, Occupational Physician, Ankara, Turkey
| | - Orhan Sumbul
- Department of Neurology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Turkey
| | - Reyhan Koroglu
- Department of Nuclear Medicine, Sultan 2 Abdülhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Hatice Aygun
- Department of Physiology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Turkey
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Salami AT, Oyagbemi AA, Alabi MV, Olaleye SB. Naringenin modulates Cobalt activities on gut motility through mechanosensors and serotonin signalling. Biomarkers 2023; 28:11-23. [PMID: 36250715 DOI: 10.1080/1354750x.2022.2137235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
IntroductionCobalt chloride-(CoCl2) exerts beneficial and toxic activities depending on dose however Naringenin-(Nar) a flavonoid, chelates heavy metals. Absorption of ingested heavy metals, or chelates are dependent on gut motility (gastric emptying and intestinal transit time) and mechanosensor regulation. Literature is vague on CoCl2 activities on gut motility and mechanosensor nor probable chelating actions with naringenin which was investigated in this study.MethodOne hundred male Wistar rats were grouped viz; A to D (25, 62, 150 and 300 mg/kg CoCl2), E to H doses of CoCl2+Nar (50 mg/kg), I-Narigenin and J-Control. Gastric emptying and intestinal transit time were evaluated by day eight, intestinal tissue assayed for biochemical, histological and immunohistochemistry reactivity.ResultCoCl2 significantly increased Gastric emptying (150 and 300 mg/kg) and Intestinal transit time unlike Naringenin. CoCl2 (150 mg/kg) significantly increased Catalase and Nitric oxide but ameliorated by Naringenin. ATPase activities significantly increased in 150 mg/kg-CoCl2 but ameliorated by Naringenin. Carbonyl levels increased in all CoCl2+Nar groups. High Enterochromaffin-cell count in 25 and 62 mg/kg-CoCl2 were ameliorated by Naringenin. Serotonin immunoreactivity increased in CoCl2 (25, 62, 300 mg/kg) but reduced in CoCl2+Nar groups.ConclusionCobalt chloride enhanced gastric motility via increased mechanosensor activities and serotonin expression at low doses. Naringenin ameliorated toxicity of high cobalt chloride via metal-flavonoid chelates.
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Affiliation(s)
- Adeola Temitope Salami
- Gastrointestinal Secretion and Inflammation Research Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Ademola Adetokubo Oyagbemi
- Cardiorenal Laboratory, Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Moyosore Victoria Alabi
- Gastrointestinal Secretion and Inflammation Research Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Samuel Babafemi Olaleye
- Gastrointestinal Secretion and Inflammation Research Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
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Ameliorative Potential of Betanin on Cigarette Smoke Extract-induced Respiratory Mucosal Inflammation and Oxidative Stress in the Adult Zebrafish Model. Pharmacogn Mag 2023. [DOI: 10.1177/09731296221145075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Background Betanin, a natural pigment and glycosidic bioactive compound, possesses anti-inflammatory antioxidant activity. Objectives In this study, we evaluated the potential effect of betanin on cigarette smoke extract (CSE)-induced pulmonary inflammation in the zebrafish model. Materials and Methods Zebrafish were randomly divided into five groups with control, CSE-exposed and betanin-treated after CSE exposure for 3 and 6 days. Oxidative stress-related parameters like reactive oxygen species (ROS), nitric oxide (NO) and myeloperoxidase (MPO) were analysed, histopathological studies were carried out and gene expression of proinflammatory tumour necrosis factor-alpha, inducible NO synthase and anti-inflammatory interleukin-10 cytokines was determined. Results Treatment with betanin reduced ROS, MPO and NO with histopathological improvement, alleviating CSE-induced pulmonary inflammation. Further, decreased expression of the proinflammatory gene and increased expression of the anti-inflammatory gene were observed after 6 days of treatment. Conclusion Betanin exhibits a protective effect against CSE exposure by inhibiting oxidative stress and inflammation.
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Villa-Jaimes GS, Moshage H, Avelar-González FJ, González-Ponce HA, Buist-Homan M, Guevara-Lara F, Sánchez-Alemán E, Martínez-Hernández SL, Ventura-Juárez J, Muñoz-Ortega MH, Martínez-Saldaña MC. Molecular and Antioxidant Characterization of Opuntia robusta Fruit Extract and Its Protective Effect against Diclofenac-Induced Acute Liver Injury in an In Vivo Rat Model. Antioxidants (Basel) 2023; 12:antiox12010113. [PMID: 36670975 PMCID: PMC9855095 DOI: 10.3390/antiox12010113] [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: 12/05/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 01/04/2023] Open
Abstract
A molecular characterization of the main phytochemicals and antioxidant activity of Opuntia robusta (OR) fruit extract was carried out, as well as an evaluation of its hepatoprotective effect against diclofenac (DF)-induced acute liver injury was evaluated. Phenols, flavonoids and betalains were quantified, and antioxidant characterization was performed by means of the ABTS•+, DPPH and FRAP assays. UPLC-QTOF-MS/MS was used to identify the main biocompounds present in OR fruit extract was carried out via. In the in vivo model, groups of rats were treated prophylactically with the OR fruit extract, betanin and N-acteylcysteine followed by a single dose of DF. Biochemical markers of oxidative stress (MDA and GSH) and relative gene expression of the inducible antioxidant response (Nrf2, Sod2, Hmox1, Nqo1 and Gclc), cell death (Casp3) and DNA repair (Gadd45a) were analyzed. Western blot analysis was performed to measure protein levels of Nrf2 and immunohistochemical analysis was used to assess caspase-3 activity in the experimental groups. In our study, the OR fruit extract showed strong antioxidant and cytoprotective capacity due to the presence of bioactive compounds, such as betalain and phenols. We conclude that OR fruit extract or selected components can be used clinically to support patients with acute liver injury.
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Affiliation(s)
- Gloria Stephanie Villa-Jaimes
- Department de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes 20100, Mexico
| | - Han Moshage
- Department of Gastroenterology and Hepatology, University Medical Center of Groningen, University of Groningen, 9713 ZP Groningen, The Netherlands
- Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, 9713 ZP Groningen, The Netherlands
| | | | | | - Manon Buist-Homan
- Department of Gastroenterology and Hepatology, University Medical Center of Groningen, University of Groningen, 9713 ZP Groningen, The Netherlands
- Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, 9713 ZP Groningen, The Netherlands
| | - Fidel Guevara-Lara
- Departamento de Química, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes 20100, Mexico
| | - Esperanza Sánchez-Alemán
- Department de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes 20100, Mexico
- Unidad de Medicina Familiar 8, Instituto Mexicano del Seguro Social (IMSS), Aguascalientes 20180, Mexico
| | - Sandra Luz Martínez-Hernández
- Departamento de Microbiología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes 20100, Mexico
| | - Javier Ventura-Juárez
- Department de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes 20100, Mexico
| | - Martín Humberto Muñoz-Ortega
- Departamento de Química, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes 20100, Mexico
| | - Ma. Consolación Martínez-Saldaña
- Department de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes 20100, Mexico
- Correspondence:
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Das SS, Dubey AK, Verma PRP, Singh SK, Singh SK. Therapeutic Potential of Quercetin-Loaded Nanoemulsion against Experimental Visceral Leishmaniasis: In Vitro/ Ex Vivo Studies and Mechanistic Insights. Mol Pharm 2022; 19:3367-3384. [PMID: 35980291 DOI: 10.1021/acs.molpharmaceut.2c00492] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Visceral leishmaniasis (VL) is one of the most fatal and neglected tropical diseases caused by Leishmania donovani (L. donovani). The applications of currently available chemotherapy (amphotericin B, miltefosine, and others) in VL treatment have been limited due to their poor bioavailability, unfavorable toxicity profile, and prolonged parenteral dosing. Quercetin (QT), a potent natural antioxidant, is a prominent target when conducting investigations on alternative therapies against L. donovani infections. However, the therapeutic applications of QT have been restricted due to its low solubility and bioavailability. In the present study, we developed and evaluated the antileishmanial activity (ALA) of quercetin-loaded nanoemulsion (QTNE) against L. donovani clinical strains. In vitro anti-promastigote assay results demonstrated that QTNE (IC50 6.6 μM, 48 h) significantly inhibited the growth of parasites more efficiently than the pure QT suspension in a dose- and time-dependent manner. Results of the anti-amastigote assay revealed that the infected macrophages (%) of QTNE were significantly more than those of the pure QT suspension at all concentrations (6.6, 26.4, and 52.8 μM; p < 0.05, p < 0.01 compared to the control). Moreover, the results of in vitro and ex vivo studies assisted in determining the mechanistic insights associated with the ALA of QTNE. The overall findings suggested that QTNE exhibited potential ALA by enhancing the intracellular ROS and nitric oxide levels, inducing distortion of membrane integrity and phosphatidylserine release (AV/PI), rupturing the parasite DNA (late apoptosis/necrosis process), and upregulating the immunomodulatory effects (IFN-γ and IL-10 levels). Additionally, QTNE showed superior biocompatibility against all of the treated healthy cells (PBMCs, PECs, and BMCs) as compared to the control. In conclusion, QTNE acts as a potential antileishmanial agent targeting both promastigote and intracellular amastigote forms of L. donovani, which thus opens a new avenue for the use of QTNE in VL therapy.
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Affiliation(s)
- Sabya Sachi Das
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India
| | - Amit Kumar Dubey
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER) Hajipur, Vaishali 844102, Bihar, India.,Parasite Immunology Lab, Division of Microbiology, Indian Council of Medical Research (ICMR)-Rajendra Memorial Research Institute of Medical Sciences (RMRIMS), Patna 800007, Bihar, India
| | - Priya Ranjan Prasad Verma
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India
| | - Shubhankar Kumar Singh
- Parasite Immunology Lab, Division of Microbiology, Indian Council of Medical Research (ICMR)-Rajendra Memorial Research Institute of Medical Sciences (RMRIMS), Patna 800007, Bihar, India
| | - Sandeep Kumar Singh
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India
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Asgharian P, Tazekand AP, Hosseini K, Forouhandeh H, Ghasemnejad T, Ranjbar M, Hasan M, Kumar M, Beirami SM, Tarhriz V, Soofiyani SR, Kozhamzharova L, Sharifi-Rad J, Calina D, Cho WC. Potential mechanisms of quercetin in cancer prevention: focus on cellular and molecular targets. Cancer Cell Int 2022; 22:257. [PMID: 35971151 PMCID: PMC9380290 DOI: 10.1186/s12935-022-02677-w] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 08/08/2022] [Indexed: 02/07/2023] Open
Abstract
Over the past few years, the cancer-related disease has had a high mortality rate and incidence worldwide, despite clinical advances in cancer treatment. The drugs used for cancer therapy, have high side effects in addition to the high cost. Subsequently, to reduce these side effects, many studies have suggested the use of natural bioactive compounds. Among these, which have recently attracted the attention of many researchers, quercetin has such properties. Quercetin, a plant flavonoid found in fresh fruits, vegetables and citrus fruits, has anti-cancer properties by inhibiting tumor proliferation, invasion, and tumor metastasis. Several studies have demonstrated the anti-cancer mechanism of quercetin, and these mechanisms are controlled through several signalling pathways within the cancer cell. Pathways involved in this process include apoptotic, p53, NF-κB, MAPK, JAK/STAT, PI3K/AKT, and Wnt/β-catenin pathways. In addition to regulating these pathways, quercetin controls the activity of oncogenic and tumor suppressor ncRNAs. Therefore, in this comprehensive review, we summarized the regulation of these signalling pathways by quercetin. The modulatory role of quercetin in the expression of various miRNAs has also been discussed. Understanding the basic anti-cancer mechanisms of these herbal compounds can help prevent and manage many types of cancer.
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Affiliation(s)
- Parina Asgharian
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmacognosy, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abbas Pirpour Tazekand
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kamran Hosseini
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Molecular Medicine, Faculty of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Haleh Forouhandeh
- Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Tohid Ghasemnejad
- Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Ranjbar
- Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Muzaffar Hasan
- Agro Produce Processing Division, ICAR—Central Institute of Agricultural Engineering, Bhopal, 462038 India
| | - Manoj Kumar
- Chemical and Biochemical Processing Division, ICAR—Central Institute for Research on Cotton Technology, Mumbai, 400019 India
| | - Sohrab Minaei Beirami
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Vahideh Tarhriz
- Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saiedeh Razi Soofiyani
- Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Clinical Research Development Unit of Sina Educational, Research, and Treatment Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | | | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - William C. Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong, China
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Zhu C, Liu G, Gu X, Yin J, Xia A, Han M, Zhang T, Jiang Q. Effect of quercetin on muscle growth and antioxidant status of the dark sleeper Odontobutis potamophila. Front Genet 2022; 13:938526. [PMID: 35957695 PMCID: PMC9358148 DOI: 10.3389/fgene.2022.938526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 06/30/2022] [Indexed: 11/13/2022] Open
Abstract
Quercetin is a flavanol beneficial in reducing fat, promoting muscle growth, and Anti-oxidation. To study its effects in freshwater fish, the full-length cDNA of the follistatin (FST) and myostatin (MSTN) genes of the dark sleeper Odontobutis potamophila were cloned for the first time. Juvenile individual O. potamophila was exposed to quercetin at one of four concentrations (0, 2.5, 5, and 10 mg/L) for 21 days. The expression level of MSTN which inhibits muscle growth in the quercetin solution was lower than in the unexposed control group. The genes that promote muscle growth are in TGF-β superfamily like FST, TGF-β1 (transforming growth factor-beta 1), and Myogenic regulatory factors (MRFs) like Myf5 (myogenic factor 5), MyoD (myogenic differentiation), MyoG (myogenin), were higher than in the control group. Apolipoprotein and growth hormone receptor transcription levels in the quercetin-treated fish were significantly lower than in the control group. The concentrations of triglyceride, low-density lipoprotein cholesterol, and high-density lipoprotein cholesterol in the muscle tissue decreased, and the lipid-lowering function of quercetin was also demonstrated at the biochemical level. In this study, we analyzed the mRNA levels of AKT, Keap1 (kelch-like ECH-associated protein 1), Nrf2 (NF-E2-related factor 2) oxidation-related genes in the Nrf2/ARE antioxidant pathway, and Malondialdehyde (MDA), catalase (CAT) activity and glutathione (GSH) content in the hepatopancreas of O. potamophila after quercetin treatment, the mRNA expression of AKT, Nrf2 and CAT activity and GSH content are higher than in the control group. Quercetin enhances antioxidant properties and positively affects muscle growth. The results showed that quercetin has no significant effects on the growth performance of O. potamophila, but is effective in increasing muscle growth rate and lowering muscle fat content.
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Affiliation(s)
- Chenxi Zhu
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
| | - Guoxing Liu
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Xiankun Gu
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Lowtemperature Germplasm Bank of Important Economic Fish of Jiangsu Provincial Science and TechnologyResources (Agricultural Germplasm Resources) Coordination Service Platform, Freshwater Fisheries Research Institute of JiangsuProvince, NanjingChina
| | - Jiawen Yin
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Lowtemperature Germplasm Bank of Important Economic Fish of Jiangsu Provincial Science and TechnologyResources (Agricultural Germplasm Resources) Coordination Service Platform, Freshwater Fisheries Research Institute of JiangsuProvince, NanjingChina
| | - Aijun Xia
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Lowtemperature Germplasm Bank of Important Economic Fish of Jiangsu Provincial Science and TechnologyResources (Agricultural Germplasm Resources) Coordination Service Platform, Freshwater Fisheries Research Institute of JiangsuProvince, NanjingChina
| | - Mingming Han
- Biology Program, School of Distance Education, Universiti Sains Malaysia, Minden, Malaysia
| | - Tongqing Zhang
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Lowtemperature Germplasm Bank of Important Economic Fish of Jiangsu Provincial Science and TechnologyResources (Agricultural Germplasm Resources) Coordination Service Platform, Freshwater Fisheries Research Institute of JiangsuProvince, NanjingChina
| | - Qichen Jiang
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Lowtemperature Germplasm Bank of Important Economic Fish of Jiangsu Provincial Science and TechnologyResources (Agricultural Germplasm Resources) Coordination Service Platform, Freshwater Fisheries Research Institute of JiangsuProvince, NanjingChina
- *Correspondence: Qichen Jiang,
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Weaver J, Liu KJ. A Review of Low-Frequency EPR Technology for the Measurement of Brain pO2 and Oxidative Stress. APPLIED MAGNETIC RESONANCE 2021; 52:1379-1394. [PMID: 35340811 PMCID: PMC8945541 DOI: 10.1007/s00723-021-01384-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/24/2021] [Accepted: 06/30/2021] [Indexed: 06/14/2023]
Abstract
EPR can uniquely measure paramagnetic species. Although commercial EPR was introduced in 1950s, the early studies were mostly restricted to chemicals in solution or cellular experiments using X-band EPR equipment. Due to its limited penetration (<1 mm), experiments with living animals were almost impossible. To overcome these difficulties, Swartz group, along with several other leaders in field, pioneered the technology of low frequency EPR (e.g., L-band, 1-2 GHz). The development of low frequency EPR and the associated probes have dramatically expanded the application of EPR technology into the biomedical research field, providing answers to important scientific questions by measuring specific parameters that are impossible or very difficult to obtain by other approaches. In this review, which is aimed at highlighting the seminal contribution from Swartz group over the last several decades, we will focus on the development of EPR technology that was designed to deal with the potential challenges arising from conducting EPR spectroscopy in living animals. The second half of the review will be concentrated on the application of low frequency EPR in measuring cerebral tissue pO2 changes and oxidative stress in various physiological and pathophysiological conditions in the brain of animal disease models.
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Affiliation(s)
- John Weaver
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM 87131
| | - Ke Jian Liu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM 87131
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Bioflavonoid-Induced Apoptosis and DNA Damage in Amastigotes and Promastigotes of Leishmania donovani: Deciphering the Mode of Action. Molecules 2021; 26:molecules26195843. [PMID: 34641387 PMCID: PMC8512304 DOI: 10.3390/molecules26195843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/13/2021] [Accepted: 08/23/2021] [Indexed: 12/04/2022] Open
Abstract
Natural products from plants contain many interesting biomolecules. Among them, quercetin (Q), gallic acid (GA), and rutin (R) all have well-reported antileishmanial activity; however, their exact mechanisms of action are still not known. The current study is a step forward towards unveil the possible modes of action of these compounds against Leishmania donovani (the causative agent of visceral leishmaniasis). The selected compounds were checked for their mechanisms of action against L. donovani using different biological assays including apoptosis and necrosis evaluation, effects on genetic material (DNA), quantitative testing of nitric oxide production, ultrastructural modification via transmission electron microscopy, and real-time PCR analysis. The results confirmed that these compounds are active against L. donovani, with IC50 values of 84.65 µg/mL, 86 µg/mL, and 98 µg/mL for Q, GA, and R, respectively. These compounds increased nitric oxide production and caused apoptosis and DNA damage, which led to changes in the treated cells’ ultrastructural behavior and finally to the death of L. donovani. These compounds also suppressed essential enzymes like trypanothione reductase and trypanothione synthetase, which are critical for leishmanial survival. The selected compounds have high antileishmanial potentials, and thus in-vivo testing and further screening are highly recommended.
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Phukan K, Devi R, Chowdhury D. Green Synthesis of Gold Nano-bioconjugates from Onion Peel Extract and Evaluation of Their Antioxidant, Anti-inflammatory, and Cytotoxic Studies. ACS OMEGA 2021; 6:17811-17823. [PMID: 34308016 PMCID: PMC8296016 DOI: 10.1021/acsomega.1c00861] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 06/10/2021] [Indexed: 05/04/2023]
Abstract
Plant secondary metabolites such as flavonoids demonstrate high degrees of antioxidant, anti-inflammatory, and anticancer activities. Among flavonoids, quercetin plays an important role in inflammation by downregulating the level of various cytokines. Thereby, in this work, onion (Allium cepa) peel was successfully utilized for the synthesis of gold nano-bioconjugates acting as a natural therapeutic drug. In this process, crude onion peel extract was first divided into different fractionates, namely, ethyl acetate, butanol, methanol, and water, and they were subjected to various preliminary studies of antioxidant activities. The ethyl acetate fractionate shows high antioxidant activities in all the assays. The bioactive components were identified and found to contain a high amount of quercetin as confirmed by liquid chromatography with tandem mass spectrometry and high-performance liquid chromatogrpahy. Three gold nano-bioconjugates were prepared with different concentrations of the ethyl acetate fractionate. Various biochemical anti-inflammatory assays were carried out and compared with the active ethyl acetate fraction of the onion peel drug (OPD). The cytotoxicity of the nano-bioconjugate system and the OPD was checked in the myoblast L6 cell line from skeletal muscle tissues to evaluate the toxicity. All the three nano-bioconjugates A, B, and E demonstrated high percentages of cell viability, viz., 73.07, 72.3, and 69.15%, respectively, at their highest concentration of 200 μg/mL. The OPD also showed 88.56% cell viability with no toxic effects in the myoblast L6 cell line from skeletal muscle tissues. The reactive oxygen species reduction of nano-bioconjugate B showed a marked reduction of 76.77% at a maximum concentration of 200 μg/mL, whereas the OPD showed 68.17%. Hence, through this work, a cheap source of nano-bioconjugates is developed, which can act as a potent antioxidant and anti-inflammatory agent and are more active in comparison to the OPD alone.
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Affiliation(s)
- Kabyashree Phukan
- Material
Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
| | - Rajlakshmi Devi
- Life
Sciences Division, Institute of Advanced
Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
| | - Devasish Chowdhury
- Material
Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
- . Tel.: +91 361 2912073. Fax: +91 361 2279909
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Mohsenpour H, Pesce M, Patruno A, Bahrami A, Pour PM, Farzaei MH. A Review of Plant Extracts and Plant-Derived Natural Compounds in the Prevention/Treatment of Neonatal Hypoxic-Ischemic Brain Injury. Int J Mol Sci 2021; 22:E833. [PMID: 33467663 PMCID: PMC7830094 DOI: 10.3390/ijms22020833] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 12/13/2022] Open
Abstract
Neonatal hypoxic-ischemic (HI) brain injury is one of the major drawbacks of mortality and causes significant short/long-term neurological dysfunction in newborn infants worldwide. To date, due to multifunctional complex mechanisms of brain injury, there is no well-established effective strategy to completely provide neuroprotection. Although therapeutic hypothermia is the proven treatment for hypoxic-ischemic encephalopathy (HIE), it does not completely chang outcomes in severe forms of HIE. Therefore, there is a critical need for reviewing the effective therapeutic strategies to explore the protective agents and methods. In recent years, it is widely believed that there are neuroprotective possibilities of natural compounds extracted from plants against HIE. These natural agents with the anti-inflammatory, anti-oxidative, anti-apoptotic, and neurofunctional regulatory properties exhibit preventive or therapeutic effects against experimental neonatal HI brain damage. In this study, it was aimed to review the literature in scientific databases that investigate the neuroprotective effects of plant extracts/plant-derived compounds in experimental animal models of neonatal HI brain damage and their possible underlying molecular mechanisms of action.
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Affiliation(s)
- Hadi Mohsenpour
- Department of Pediatrics, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah 75333–67427, Iran;
| | - Mirko Pesce
- Department of Medicine and Aging Sciences, University G. d’Annunzio, 66100 Chieti, Italy
| | - Antonia Patruno
- Department of Medicine and Aging Sciences, University G. d’Annunzio, 66100 Chieti, Italy
| | - Azam Bahrami
- Medical Technology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67158-47141, Iran;
| | - Pardis Mohammadi Pour
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran;
| | - Mohammad Hosein Farzaei
- Medical Technology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67158-47141, Iran;
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12
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Abstract
Although the association between fruit consumption and CHD risk has been well studied, few studies have focused on flavonoid-rich fruits (FRF), in particular strawberries and grapes. We aimed to verify the association of total and specific FRF consumption with risk of CHD by a large prospective cohort study. A total of 87 177 men and women aged 44-75 years who were free of CVD and cancer at study baseline were eligible for the present analysis. FRF consumption was assessed using a FFQ. Cox proportional hazards regression models were used to estimate the hazard ratios (HR) of CHD in relation to FRF consumption with adjustment for potential risk factors and confounders. During a mean follow-up of 13·2 years, we identified 1156 incident CHD cases. After full adjustment for covariates including demographics, lifestyles and dietary factors, the HR were 0·93 (95 % CI 0·77, 1·11), 0·91 (95 % CI 0·75, 1·11), 0·84 (95 % CI 0·67, 1·04) and 0·78 (95 % CI 0·62, 0·99) for the second, third, fourth and fifth quintiles compared with the lowest quintile of FRF consumption. Regarding specific fruits, we observed a significant inverse association for citrus fruit consumption and a borderline inverse association for strawberry consumption, while no association was observed for apple/pear or grape consumption. Although the associations appeared to be stronger in women, they were not significantly modified by sex. Higher consumption of FRF, in particular, citrus fruits, may be associated with a lower risk of developing CHD.
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13
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Dobrydnev AV, Tkachuk TM, Atamaniuk VP, Popova MV. Quercetin-Amino Acid Conjugates are Promising Anti-Cancer Agents in Drug Discovery Projects. Mini Rev Med Chem 2020; 20:107-122. [PMID: 31595850 DOI: 10.2174/1389557519666191009152007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/14/2019] [Accepted: 09/18/2019] [Indexed: 02/06/2023]
Abstract
Quercetin is a plant flavonoid with great potential for the prevention and treatment of disease. Despite the curative application of quercetin is hampered by low bioavailability, its core serves as a scaffold for generating more potent compounds with amplified therapeutic window. This review aims to describe recent advances in the improvement of the pharmacokinetic profile of quercetin via the amino acid prodrug approach which offers wide structural diversity, physicochemical and biological properties improvement. According to the findings, conjugation of quercetin with amino acids results in increased solubility, stability, cellular permeability as well as biological activity. In particular quercetin- amino acid conjugates exhibited potent anticancer, MDR-reversal and antibiotic resistance reversal activities. The synthetic pathways and examples of quercetin-amino acid conjugates are considered. Practical considerations and challenges associated with the development of these prodrugs are also discussed. This mini-review covers the literature on quercetin-amino acid conjugates since 2001 when the first thematic work was published.
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Affiliation(s)
- Alexey V Dobrydnev
- SMC Ecopharm Ltd., Naberezhno-Korchuvatska Street 136-B, Kyiv 03045, Ukraine
| | - Tetiana M Tkachuk
- SMC Ecopharm Ltd., Naberezhno-Korchuvatska Street 136-B, Kyiv 03045, Ukraine
| | - Viktor P Atamaniuk
- SMC Ecopharm Ltd., Naberezhno-Korchuvatska Street 136-B, Kyiv 03045, Ukraine
| | - Maria V Popova
- Chemistry Department, National Taras Shevchenko University of Kyiv, Lva Tolstoho Street 12, Kyiv 01033, Ukraine
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14
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Uddin MS, Mamun AA, Rahman MA, Kabir MT, Alkahtani S, Alanazi IS, Perveen A, Ashraf GM, Bin-Jumah MN, Abdel-Daim MM. Exploring the Promise of Flavonoids to Combat Neuropathic Pain: From Molecular Mechanisms to Therapeutic Implications. Front Neurosci 2020; 14:478. [PMID: 32587501 PMCID: PMC7299068 DOI: 10.3389/fnins.2020.00478] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/17/2020] [Indexed: 01/10/2023] Open
Abstract
Neuropathic pain (NP) is the result of irregular processing in the central or peripheral nervous system, which is generally caused by neuronal injury. The management of NP represents a great challenge owing to its heterogeneous profile and the significant undesirable side effects of the frequently prescribed psychoactive agents, including benzodiazepines (BDZ). Currently, several established drugs including antidepressants, anticonvulsants, topical lidocaine, and opioids are used to treat NP, but they exert a wide range of adverse effects. To reduce the burden of adverse effects, we need to investigate alternative therapeutics for the management of NP. Flavonoids are the most common secondary metabolites of plants used in folkloric medicine as tranquilizers, and have been claimed to have a selective affinity to the BDZ binding site. Several studies in animal models have reported that flavonoids can reduce NP. In this paper, we emphasize the potentiality of flavonoids for the management of NP.
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Affiliation(s)
- Md Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh.,Pharmakon Neuroscience Research Network, Dhaka, Bangladesh
| | - Abdullah Al Mamun
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh.,Pharmakon Neuroscience Research Network, Dhaka, Bangladesh
| | - Md Ataur Rahman
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology, Seoul, South Korea
| | | | - Saad Alkahtani
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ibtesam S Alanazi
- Department of Biology, Faculty of Sciences, Univesity of Hafr Al Batin, Hafr Al Batin, Saudi Arabia
| | - Asma Perveen
- Glocal School of Life Sciences, Glocal University, Saharanpur, India
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - May N Bin-Jumah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Mohamed M Abdel-Daim
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.,Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
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15
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Qi-activating quercetin alleviates mitochondrial dysfunction and neuroinflammation in vivo and in vitro. Arch Pharm Res 2020; 43:553-566. [DOI: 10.1007/s12272-020-01238-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 05/19/2020] [Indexed: 01/05/2023]
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16
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Fatima A, Siddique YH. Role of Flavonoids in Neurodegenerative Disorders with Special Emphasis on Tangeritin. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2019; 18:581-597. [DOI: 10.2174/1871527318666190916141934] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 06/12/2019] [Accepted: 07/09/2019] [Indexed: 02/07/2023]
Abstract
Flavonoids are naturally occurring plant polyphenols found universally in all fruits, vegetables
and medicinal plants. They have emerged as a promising candidate in the formulation of treatment
strategies for various neurodegenerative disorders. The use of flavonoid rich plant extracts and
food in dietary supplementation have shown favourable outcomes. The present review describes the
types, properties and metabolism of flavonoids. Neuroprotective role of various flavonoids and the
possible mechanism of action in the brain against the neurodegeneration have been described in detail
with special emphasis on the tangeritin.
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Affiliation(s)
- Ambreen Fatima
- Drosophila Transgenic Laboratory, Section of Genetics, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Yasir Hasan Siddique
- Drosophila Transgenic Laboratory, Section of Genetics, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
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17
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Tran HA, Ly KL, Fox KE, Tran PA, Nguyen TH. Immobilization of Antimicrobial Silver and Antioxidant Flavonoid as a Coating for Wound Dressing Materials. Int J Nanomedicine 2019; 14:9929-9939. [PMID: 31908450 PMCID: PMC6926368 DOI: 10.2147/ijn.s230214] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 11/19/2019] [Indexed: 12/18/2022] Open
Abstract
Purpose The aim of this study is to develop a new coating for wound dressings that is comprised of antimicrobial silver (Ag) and antioxidant flavonoid quercetin (Q). Methods Dip-coating was used to apply the coating on cotton gauge as a model dressing. Ag was immobilised using polydopamine as a priming and catalytic layer followed by coating of quercetin that was incorporated in a functionalized polydimethylsiloxane. The coating was investigated using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and release assay. The antimicrobial activity of quercetin and Ag was tested against Staphylococcus aureus (S. aureus). A surgical wound model on mice was used to evaluate the effects of the coated dressing on wound healing rates and tissue histology. Results Ag and quercetin showed enhanced antimicrobial activity against S. aureus when used in combination. Ag and quercetin were successfully immobilized onto the fibre of the dressing using the dip-coating process. The coating released Ag and quercetin over 8 days and showed strong antioxidant activity. In the wound healing model, complete wound closure was achieved in 12 days in the group receiving coated dressing and was associated with an enhancement in tissue remodelling and neo-angiogenesis and the reduction in tissue inflammation. Conclusion These new antimicrobial-antioxidant coatings may be promising in the development of advanced wound care therapies.
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Affiliation(s)
- Hien A Tran
- Queensland University of Technology (QUT), Brisbane, Queensland 4001, Australia.,Interface Science and Materials Engineering Group, School of Chemistry, Physics and Mechanical Engineering, QUT, Brisbane, Queensland, Australia.,Centre in Regenerative Medicine, QUT, Brisbane, Queensland, Australia.,Department of Biomedical Engineering, International University, Vietnam National University- Ho Chi Minh City (VNU-HCM), Ho Chi Minh City 70000, Vietnam
| | - Khanh L Ly
- Department of Biomedical Engineering, International University, Vietnam National University- Ho Chi Minh City (VNU-HCM), Ho Chi Minh City 70000, Vietnam
| | - Kate E Fox
- School of Engineering, Centre for Additive Manufacturing, RMIT University, Melbourne, VIC 3001, Australia
| | - Phong A Tran
- Queensland University of Technology (QUT), Brisbane, Queensland 4001, Australia.,Interface Science and Materials Engineering Group, School of Chemistry, Physics and Mechanical Engineering, QUT, Brisbane, Queensland, Australia.,Centre in Regenerative Medicine, QUT, Brisbane, Queensland, Australia
| | - Thi-Hiep Nguyen
- Department of Biomedical Engineering, International University, Vietnam National University- Ho Chi Minh City (VNU-HCM), Ho Chi Minh City 70000, Vietnam
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18
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Sánchez M, Romero M, Gómez-Guzmán M, Tamargo J, Pérez-Vizcaino F, Duarte J. Cardiovascular Effects of Flavonoids. Curr Med Chem 2019; 26:6991-7034. [DOI: 10.2174/0929867326666181220094721] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 10/29/2018] [Accepted: 10/29/2018] [Indexed: 02/07/2023]
Abstract
:
Cardiovascular Disease (CVD) is the major cause of death worldwide, especially in Western
society. Flavonoids are a large group of polyphenolic compounds widely distributed in plants, present
in a considerable amount in fruit and vegetable. Several epidemiological studies found an inverse association
between flavonoids intake and mortality by CVD. The antioxidant effect of flavonoids was
considered the main mechanism of action of flavonoids and other polyphenols. In recent years, the role
of modulation of signaling pathways by direct interaction of flavonoids with multiple protein targets,
namely kinases, has been increasingly recognized and involved in their cardiovascular protective effect.
There are strong evidence, in in vitro and animal experimental models, that some flavonoids induce
vasodilator effects, improve endothelial dysfunction and insulin resistance, exert platelet antiaggregant
and atheroprotective effects, and reduce blood pressure. Despite interacting with multiple targets, flavonoids
are surprisingly safe. This article reviews the recent evidence about cardiovascular effects that
support a beneficial role of flavonoids on CVD and the potential molecular targets involved.
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Affiliation(s)
- Manuel Sánchez
- Department of Pharmacology, School of Pharmacy, University of Granada, and Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Miguel Romero
- Department of Pharmacology, School of Pharmacy, University of Granada, and Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Manuel Gómez-Guzmán
- Department of Pharmacology, School of Pharmacy, University of Granada, and Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Juan Tamargo
- Department of Pharmacology, School of Medicine, Complutense University of Madrid and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain
| | - Francisco Pérez-Vizcaino
- Department of Pharmacology, School of Medicine, Complutense University of Madrid and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain
| | - Juan Duarte
- Department of Pharmacology, School of Pharmacy, University of Granada, and Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
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19
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Jeong JS, Piao Y, Kang S, Son M, Kang YC, Du XF, Ryu J, Cho YW, Jiang HH, Oh MS, Hong SP, Oh YJ, Pak YK. Triple herbal extract DA-9805 exerts a neuroprotective effect via amelioration of mitochondrial damage in experimental models of Parkinson's disease. Sci Rep 2018; 8:15953. [PMID: 30374025 PMCID: PMC6206089 DOI: 10.1038/s41598-018-34240-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 10/10/2018] [Indexed: 12/13/2022] Open
Abstract
Moutan cortex, Angelica Dahurica root, and Bupleurum root are traditional herbal medicines used in Asian countries to treat various diseases caused by oxidative stress or inflammation. Parkinson's disease (PD) has been associated with mitochondrial dysfunction, but no effective treatment for mitochondrial dysfunction has yet been identified. In this study we investigated the neuroprotective effects of the triple herbal extract DA-9805 in experimental models of PD. DA-9805 was prepared by extracting three dried plant materials (Moutan cortex, Angelica Dahurica root, and Bupleurum root in a 1:1:1 mixture) with 90% ethanol on a stirring plate for 24 h at room temperature and fingerprinted using high-performance liquid chromatography. 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) and its active metabolite 1-methyl-4-phenylpyridinium (MPP+), which both exert neurotoxic effects on dopaminergic neurons by inhibiting mitochondrial oxidative phosphorylation (OXPHOS) complex I, were used to make experimental models of PD. In MPP+-treated SH-SY5Y cells, DA-9805 ameliorated the suppression of tyrosine hydroxylase expression and mitochondrial damage on OXPHOS complex 1 activity, mitochondrial membrane potential, reactive oxygen species (ROS) generation, and oxygen consumption rate. In the MPTP-induced subacute PD model mice, oral administration of DA-9805 recovered dopamine content as well as bradykinesia, as determined by the rotarod test. DA-9805 protected against neuronal damage in the substantia nigra pars compacta (SNpc) and striatum. In both in vitro and in vivo models of PD, DA-9805 normalized the phosphorylation of AKT at S473 and T308 on the insulin signaling pathway and the expression of mitochondria-related genes. These results demonstrate that the triple herbal extract DA-9805 showed neuroprotective effects via alleviating mitochondria damage in experimental models of PD. We propose that DA-9805 may be a suitable candidate for disease-modifying therapeutics for PD.
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Affiliation(s)
- Jin Seok Jeong
- R&D Center of Dong-A ST, Yong-in, Kyungki-do, 17073, Korea
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Ying Piao
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea
- Department of Emergency, Yanbian University Hospital, Yanji City, Jilin Province, 133000, China
| | - Sora Kang
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea
| | - Minuk Son
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea
| | - Young Cheol Kang
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea
| | - Xiao Fei Du
- R&D Center of Dong-A ST, Yong-in, Kyungki-do, 17073, Korea
| | - Jayoung Ryu
- R&D Center of Dong-A ST, Yong-in, Kyungki-do, 17073, Korea
| | | | - Hai-Hua Jiang
- R&D Center of Dong-A ST, Yong-in, Kyungki-do, 17073, Korea
| | - Myung Sook Oh
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, 02447, Korea
| | - Seon-Pyo Hong
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, 02447, Korea
| | - Young J Oh
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea.
| | - Youngmi Kim Pak
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea.
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul, 02447, Korea.
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20
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Protective Effect of Pitao ( Pitavia punctata (R. & P.) Molina) Polyphenols against the Red Blood Cells Lipoperoxidation and the In Vitro LDL Oxidation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:1049234. [PMID: 30151018 PMCID: PMC6091293 DOI: 10.1155/2018/1049234] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 06/17/2018] [Accepted: 06/28/2018] [Indexed: 12/11/2022]
Abstract
The oxidative stress is characterized by an imbalance between the oxidizing agents and antioxidants; meanwhile, the consumption of antioxidants has been considered as an important tool in the prevention of oxidative stress and its consequences. Pitavia punctata (R. & P.) Molina is an endemic arboreal species from the Chilean Coast Range, in which a large amount of flavonoids has been described. This work focused on characterizing and evaluating, in human erythrocytes, the antioxidant capacity and membrane protection of P. punctata extracts and the in vitro protection of the oxidation of the Low Density Lipoprotein (LDL). The phytochemical screening revealed the presence of Quercetin derivatives and flavonoids, such as (-)-Epicatechin, Kaempferol, and derivatives. The methanolic extract presented an important antioxidant activity, protecting the membrane integrity of the red blood cells against the oxidative damage caused by Hypochlorous acid and inhibiting the oxidation of the LDL lipoprotein.
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21
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Choi DH, Cho UM, Hwang HS. Anti-inflammation effect of rebaudioside A by inhibition of the MAPK and NF-κB signal pathway in RAW264.7 macrophage. ACTA ACUST UNITED AC 2018. [DOI: 10.3839/jabc.2018.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Da Hee Choi
- School of Cosmetic Science and Beauty Biotechnology, Semyung University, 65, Semyungro, Jechon, Chungbuk 27136, Republic of Korea
| | - Uk Min Cho
- School of Cosmetic Science and Beauty Biotechnology, Semyung University, 65, Semyungro, Jechon, Chungbuk 27136, Republic of Korea
| | - Hyung Seo Hwang
- School of Cosmetic Science and Beauty Biotechnology, Semyung University, 65, Semyungro, Jechon, Chungbuk 27136, Republic of Korea
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Shah FA, Park DJ, Koh PO. Identification of Proteins Differentially Expressed by Quercetin Treatment in a Middle Cerebral Artery Occlusion Model: A Proteomics Approach. Neurochem Res 2018; 43:1608-1623. [DOI: 10.1007/s11064-018-2576-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 06/06/2018] [Accepted: 06/14/2018] [Indexed: 02/06/2023]
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23
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Park DJ, Shah FA, Koh PO. Quercetin attenuates neuronal cells damage in a middle cerebral artery occlusion animal model. J Vet Med Sci 2018; 80:676-683. [PMID: 29563391 PMCID: PMC5938200 DOI: 10.1292/jvms.17-0693] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Cerebral ischemia is a neurological disorder with high mortality. Quercetin is a
flavonoid compound that is abundant in vegetables and fruits. It exerts anti-inflammatory
and anti-apoptotic effects. This study investigated the neuroprotective effects of
quercetin in focal cerebral ischemia. Male Sprague-Dawley rats were subjected to middle
cerebral artery occlusion (MCAO) to induce focal cerebral ischemia. Quercetin or vehicle
was injected 30 min before the onset of ischemia. A neurological function test, brain
edema measurement, and 2,3,5-triphenyltetrazolium chloride staining were performed to
elucidate the neuroprotective effects of quercetin. Western blot analysis was performed to
observe caspase-3 and poly ADP-ribose polymerase (PARP) protein expression. MCAO leads to
severe neuronal deficits and increases brain edema and infarct volume. However, quercetin
administration attenuated the MCAO-induced neuronal deficits and neuronal degeneration. We
observed increases in caspase-3 and PARP protein levels in MCAO-operated animals injected
with vehicle, whereas quercetin administration attenuated these increases in MCAO injury.
This study reveals the neuroprotective effect of quercetin in an MCAO-induced animal model
and demonstrates the regulation of caspase-3 and PARP expression by quercetin treatment.
These results suggest that quercetin exerts a neuroprotective effect through preventing
the MCAO-induced activation of apoptotic pathways affecting caspase-3 and PARP
expression.
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Affiliation(s)
- Dong-Ju Park
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - Fawad-Ali Shah
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - Phil-Ok Koh
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
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Divya MK, Lincy L, Raghavamenon AC, Babu TD. Ameliorative effect of Apodytes dimidiata on cisplatin-induced nephrotoxicity in Wistar rats. PHARMACEUTICAL BIOLOGY 2016; 54:2149-2157. [PMID: 26940704 DOI: 10.3109/13880209.2016.1149494] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Context Nutraceuticals possessing antioxidant potential have been used to alleviate side effects exerted by many chemotherapeutics, including cisplatin. Since Apodytes dimidiata E. Mey. Ex Arn. (Icacinaceae) shows antioxidant potential, it may possess significant chemoprotective effects. Objectives The study investigated whether A. dimidiata could attenuate cisplatin-induced renal damage. Materials and methods Nephrotoxicity was induced by cisplatin (single i.p., 16 mg/kg b wt.) in Wistar rats. Methanolic leaf extract of A. dimidiata (AMF) was administered at a dose of 250 mg/kg b. wt. orally for 5 consecutive days before/after cisplatin administration. Blood and renal parameters were analysed. Total phenolic and flavonoid content in AMF and its NO scavenging effect was determined. Results Significant protective effect of AMF on cisplatin-induced nephrotoxicity was observed in pre-treated animals. The reduction of urea, creatinine and lipid peroxidation was 58.31%, 42.19% and 60%, respectively, and the increase in haemoglobin and leucocyte count was 28.25% and 42.91%, respectively. The increase calculated for GSH, GPx, SOD and catalase was 35.64%, 18.14%, 74.42% and 35.46%, respectively. Tissue architecture of kidney was almost normal in AMF treated animals. The results were comparable to the standard drug, silymarin. AMF contained high level of polyphenols and flavonoids and was found to scavenge NO radicals (IC50 121.8 μg/mL). Discussion and conclusion AMF can effectively counteract cisplatin mediated renal acute toxicity possibly by scavenging reactive oxygen and nitrogen species. Accordingly, the study suggests that AMF can ameliorate free radical-induced damage associated with chemotherapeutic drugs.
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Affiliation(s)
- Menon Kunnathully Divya
- a Department of Biochemistry, Amala Cancer Research Centre , Amala Nagar (Recognised Research Centre, University of Calicut) , Thrissur , Kerala , India
| | - Lawrence Lincy
- a Department of Biochemistry, Amala Cancer Research Centre , Amala Nagar (Recognised Research Centre, University of Calicut) , Thrissur , Kerala , India
| | - Achuthan Chathrattil Raghavamenon
- a Department of Biochemistry, Amala Cancer Research Centre , Amala Nagar (Recognised Research Centre, University of Calicut) , Thrissur , Kerala , India
| | - Thekkekara Devassy Babu
- a Department of Biochemistry, Amala Cancer Research Centre , Amala Nagar (Recognised Research Centre, University of Calicut) , Thrissur , Kerala , India
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25
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Multi-target screening mines hesperidin as a multi-potent inhibitor: Implication in Alzheimer's disease therapeutics. Eur J Med Chem 2016; 121:810-822. [DOI: 10.1016/j.ejmech.2016.03.057] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 03/09/2016] [Accepted: 03/20/2016] [Indexed: 01/09/2023]
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Nabavi SF, Sureda A, Habtemariam S, Nabavi SM. Ginsenoside Rd and ischemic stroke; a short review of literatures. J Ginseng Res 2015; 39:299-303. [PMID: 26869821 PMCID: PMC4593783 DOI: 10.1016/j.jgr.2015.02.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 02/08/2015] [Indexed: 01/05/2023] Open
Abstract
Panax ginseng is a well-known economic medical plant that is widely used in Chinese traditional medicine. This species contains a unique class of natural products-ginsenosides. Recent clinical and experimental studies have presented numerous lines of evidence on the promising role of ginsenosides on different diseases including neurodegenerative diseases, cardiovascular diseases, and certain types of cancer. Nowadays, most of the attention has focused on ginsenoside Rd as a neuroprotective agent to attenuate ischemic stroke damages. Some of the evidence showed that ginsenoside Rd ameliorates ischemic stroke-induced damages through the suppression of oxidative stress and inflammation. Ginsenoside Rd can prolong neural cells' survival through the upregulation of the endogenous antioxidant system, phosphoinositide-3-kinase/AKT and extracellular signal-regulated protein kinase 1/2 pathways, preservation of mitochondrial membrane potential, suppression of the nuclear factor-kappa B, transient receptor potential melastatin, acid sensing ion channels 1a, poly(ADP-ribose) polymerase-1, protein tyrosine kinase activation, as well as reduction of cytochrome c-releasing and apoptosis-inducing factor. In the current work, we review the available reports on the promising role of ginsenoside Rd on ischemic stroke. We also discuss its chemistry, source, and the molecular mechanism underlying this effect.
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Affiliation(s)
- Seyed Fazel Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Antoni Sureda
- Research Group on Community Nutrition and Oxidative Stress, University of Balearic Islands, and CIBERobn (Physiopathology of Obesity and Nutrition), Palma de Mallorca, Balearic Islands, Spain
| | - Solomon Habtemariam
- Pharmacognosy Research Laboratories, Medway School of Science, University of Greenwich, Chatham-Maritime, Kent ME4 4TB, UK
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Jeitner TM, Battaile K, Cooper AJL. Critical Evaluation of the Changes in Glutamine Synthetase Activity in Models of Cerebral Stroke. Neurochem Res 2015; 40:2544-56. [DOI: 10.1007/s11064-015-1667-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 05/14/2015] [Accepted: 05/20/2015] [Indexed: 01/04/2023]
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Oboh G, Ademosun AO, Ayeni PO, Omojokun OS, Bello F. Comparative effect of quercetin and rutin on α-amylase, α-glucosidase, and some pro-oxidant-induced lipid peroxidation in rat pancreas. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s00580-014-2040-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Suleria HAR, Butt MS, Anjum FM, Saeed F, Khalid N. Onion: Nature Protection Against Physiological Threats. Crit Rev Food Sci Nutr 2014; 55:50-66. [DOI: 10.1080/10408398.2011.646364] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Insight into the anti-amyloidogenic activity of polyphenols and its application in virtual screening of phytochemical database. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1081-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Behravan E, Razavi BM, Hosseinzadeh H. Review of plants and their constituents in the therapy of cerebral ischemia. Phytother Res 2014; 28:1265-74. [PMID: 24919707 DOI: 10.1002/ptr.5187] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Revised: 05/08/2014] [Accepted: 05/18/2014] [Indexed: 11/08/2022]
Abstract
Cerebral ischemia is a condition in which there is insufficient blood flow to the brain to meet metabolic demand. This leads to cerebral hypoxia and thus to the death of neuronal cells or stroke. The limited number of medicines currently available for patients following ischemic stroke and insufficient data on efficiency of these chemicals in the treatment of stroke led us to the search for novel therapeutic approaches. Recent studies have focused on the possible capacity of natural compounds extracted from vegetables and fruits, to prevent human disabilities caused by cerebral ischemia. In this review, we will discuss some plants and their constituents that may protect brain ischemia or delay the neurological disorders following a stroke. We have reviewed different studies in scientific databases that investigate herbal compounds and their effects on cerebral ischemia.
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Affiliation(s)
- Effat Behravan
- Department of Pharmacodynamy and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Structure-activity association of flavonoids in lung diseases. Molecules 2014; 19:3570-95. [PMID: 24662074 PMCID: PMC6271797 DOI: 10.3390/molecules19033570] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 03/13/2014] [Accepted: 03/17/2014] [Indexed: 12/22/2022] Open
Abstract
Flavonoids are polyphenolic compounds classified into flavonols, flavones, flavanones, isoflavones, catechins, anthocyanidins, and chalcones according to their chemical structures. They are abundantly found in Nature and over 8,000 flavonoids have from different sources, mainly plant materials, have been described. Recently reports have shown the valuable effects of flavonoids as antiviral, anti-allergic, antiplatelet, antitumor, antioxidant, and anti-inflammatory agents and interest in these compounds has been increasing since they can be helpful to human health. Several mechanisms of action are involved in the biological properties of flavonoids such as free radical scavenging, transition metal ion chelation, activation of survival genes and signaling pathways, regulation of mitochondrial function and modulation of inflammatory responses. The anti-inflammatory effects of flavonoids have been described in a number of studies in the literature, but not frequently associated to respiratory disease. Thus, this review aims to discuss the effects of different flavonoids in the control of lung inflammation in some disorders such as asthma, lung emphysema and acute respiratory distress syndrome and the possible mechanisms of action, as well as establish some structure-activity relationships between this biological potential and chemical profile of these compounds.
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Hassan GS, Abdel Rahman DE, Saleh DO, Abdel Jaleel GAR. Benzofuran–Morpholinomethyl–Pyrazoline Hybrids as a New Class of Vasorelaxant Agents: Synthesis and Quantitative Structure–Activity Relationship Study. Chem Pharm Bull (Tokyo) 2014; 62:1238-51. [DOI: 10.1248/cpb.c14-00572] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
As America’s baby boomer population matures, there is an increasing interest in supplements that can delay or oppose the aging process. This antiaging movement has exploded over the past decade. While most supplements are not supported by scientific literature or government controls, a number of products have been the subject of significant scientific inquiry. Hormone replacement therapy, including testosterone and growth hormone, has mixed results, and antioxidative strategies are supported by basic science but lack clinical evidence-based outcomes. While the process of aging has become better understood leading to more rational approaches to combat its effects on health, the clinician is reminded to carefully discern between the science and marketing that is available in this area.
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Liu CM, Zheng GH, Cheng C, Sun JM. Quercetin protects mouse brain against lead-induced neurotoxicity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:7630-7635. [PMID: 23855546 DOI: 10.1021/jf303387d] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Quercetin (QE), the major bioflavonoid in the human diet, has been reported to have many benefits and medicinal properties. However, its protective effects against lead (Pb)-induced neurotoxicity have not been clarified. The aim of the present study was to investigate the effects of QE on neurotoxicity in mice exposed to Pb. Mice were exposed to lead acetate (20 mg/kg body weight/day) intragastrically with or without QE (15 and 30 mg/kg body weight/day) coadministration for 3 months. The data showed that QE significantly prevented Pb-induced neurotoxicity in a dose-dependent manner. Exploration of the underlying mechanisms of QE action revealed that QE administration decreased Pb contents in blood (13.2, 19.1%) and brain (17.1, 20.0%). QE markedly increased NO production (39.1, 61.1%) and PKA activity (51.0, 57.8%) in brains of Pb-treated mice. Additionally, QE remarkably suppressed Pb-induced oxidative stress in mouse brain. Western blot analysis showed that QE increased the phosphorylations of Akt, CaMKII nNOS, eNOS, and CREB in brains of Pb-treated mice. The results suggest that QE can inhibit Pb-induced neurotoxicity and partly restore PKA, Akt, NOS, CaMKII, and CREB activities.
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Affiliation(s)
- Chan-Min Liu
- School of Life Science, Jiangsu Normal University , No. 101 Shanghai Road, Tangshan New Area, Xuzhou City 221116, Jiangsu Province, People's Republic of China
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Karuppagounder S, Madathil S, Pandey M, Haobam R, Rajamma U, Mohanakumar K. Quercetin up-regulates mitochondrial complex-I activity to protect against programmed cell death in rotenone model of Parkinson’s disease in rats. Neuroscience 2013; 236:136-48. [DOI: 10.1016/j.neuroscience.2013.01.032] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/09/2013] [Accepted: 01/10/2013] [Indexed: 12/21/2022]
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Abdel-Monem N, Abdel-Azeem AM, El Ashry ESH, Ghareeb DA, Nabil-Adam A. Assessment of Secondary Metabolites from Marine-Derived Fungi as Antioxidant. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojmc.2013.33009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lapi D, Vagnani S, Pignataro G, Esposito E, Paterni M, Colantuoni A. Protective Effects of Quercetin on Rat Pial Microvascular Changes during Transient Bilateral Common Carotid Artery Occlusion and Reperfusion. Front Physiol 2012; 3:32. [PMID: 22403549 PMCID: PMC3290798 DOI: 10.3389/fphys.2012.00032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 02/06/2012] [Indexed: 11/29/2022] Open
Abstract
The aim of this study was to assess the in vivo effects of quercetin on pial microvascular responses during transient bilateral common carotid artery occlusion (BCCAO) and reperfusion. Rat pial microcirculation was visualized by fluorescence microscopy through a closed cranial window. Pial arterioles were classified in five orders of branchings. Capillaries were assigned order 0, the smallest arterioles order 1, and the largest ones order 5. In ischemic rats, 30 min BCCAO and 60 min reperfusion caused arteriolar diameter decrease (by 14.5 ± 3.3% of baseline in order 2), microvascular leakage [0.47 ± 0.04, normalized gray levels (NGL)], leukocyte adhesion in venules (9 ± 2/100 μm venular length, v.l./30 s), and reduction of capillary perfusion (by 40 ± 7% of baseline). Moreover, at the end of BCCAO and reperfusion there was a significant increase in reactive oxygen species (ROS) formation when compared with baseline. Quercetin highest dose determined dilation in all arteriolar orders (by 40 ± 4% of baseline in order 2) and prevented microvascular permeability (0.15 ± 0.02 NGL), leukocyte adhesion (3 ± 1/100 μm v.l./30 s) as well as ROS formation, while capillary perfusion was protected. Inhibition of endothelial nitric oxide synthase (NOS) prior to quercetin reduced arteriolar dilation (order 2 diameter increase by 10.3 ± 2.5% of baseline) and caused permeability increase (0.29 ± 0.03 NGL); inhibition of neuronal NOS or inducible NOS did not affect quercetin-induced effects. Inhibition of guanylyl cyclase prior to quercetin reversed the quercetin’s effects on pial arteriolar diameter and leakage. In conclusion, quercetin was able to protect pial microcirculation from ischemia–reperfusion damage inducing arteriolar dilation likely by nitric oxide release. Moreover, quercetin scavenger activity blunted ROS formation preserving the blood–brain barrier integrity.
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Affiliation(s)
- Dominga Lapi
- Department of Neuroscience, "Federico II" University Medical School Naples, Italy
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Animal Models of Stroke for Preclinical Drug Development: A Comparative Study of Flavonols for Cytoprotection. Transl Stroke Res 2012. [DOI: 10.1007/978-1-4419-9530-8_25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Aldemir M, Özgün G, Önen E, Okulu E, Kayıgil Ö. Quercetin has a protective role on histopathological findings on testicular ischaemia-reperfusion injury in rats. Andrologia 2011; 44 Suppl 1:479-83. [PMID: 21806666 DOI: 10.1111/j.1439-0272.2011.01211.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
We investigated the effects of quercetin on pathological findings on testicular ischaemia-reperfusion (I/R) injury in rats. Twenty-four male Wistar albino rats were randomly assigned into four groups: Group 1, control (n = 5); Group 2, sham (n = 4); Group 3, I/R (n = 8); and Group 4, I/R + quercetin (n = 7). Bilateral testicular artery and vein were occluded for 1 h, followed by reperfusion in I/R and I/R + quercetin animals. Quercetin (20 mg kg(-1) per day) was administrated once daily by gavage to Group 1 and Group 4, respectively, after reperfusion. At the end of the study, bilateral orchiectomies were performed for histopathologic examination. The tissue damage was evaluated with light microscopy. Normal inter-stitium and seminiferous tubules were observed in control group. In the sham group, rats were seen minimal oedema around the seminiferous tubules and congested vascular structures. In Group 3, oedema, vascular congestion and haemorrhage between seminiferous tubules were observed. In Group 4, histopathologic features were markedly less than Group 3 (P = 0.03). Our study demonstrated that quercetin seems to have a protective effect on testis histopathology in rats with testicular I/R.
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Affiliation(s)
- M Aldemir
- Department of 2nd Urology, Atatürk Training and Research Hospital, Ankara, Turkey.
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Ranpariya VL, Parmar SK, Sheth NR, Chandrashekhar VM. Neuroprotective activity of Matricaria recutita against fluoride-induced stress in rats. PHARMACEUTICAL BIOLOGY 2011; 49:696-701. [PMID: 21599496 DOI: 10.3109/13880209.2010.540249] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
CONTEXT Oxidative stress plays a key role in pathophysiology of many neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, Huntington's disease, and so on. Although Matricaria recutita L. (Asteraceae), German chamomile, is traditionally used for central nervous system (CNS)-related diseases, its antistress properties have received little attention. OBJECTIVE The present study evaluated the neuroprotective effect of German chamomile against aluminium fluoride (AlF₄⁻)-induced oxidative stress in rats. MATERIALS AND METHODS The Sprague-Dawley rats of either sex (200-250 g) were selected and grouped as: group I received normal saline; group II received AlF₄⁻ (negative control); groups III, IV, and V received 100, 200, and 300 mg/kg, orally, German chamomile methanol extract (GCME) along with AlF₄⁻; and group VI received quercetin (25 mg/kg, i.p.) + AlF₄⁻, respectively. After 10 days treatment with GCME, oxidative stress was induced by administering AlF₄⁻ through drinking water for 7 days. Then, the protective antioxidant enzyme levels were measured and the histopathological studies were carried out. RESULTS The GCME showed dose-dependent neuroprotective activity by significant decrease in lipid peroxidation (LPO) and increase in the superoxide dismutase (SOD), catalase (CAT), glutathione (GSH), and total thiol levels in extract-treated animals as compared with negative control group (P < 0.001). The histopathological studies also revealed the potent neuroprotective action of German chamomile against oxidative brain damage. CONCLUSION The present study for the first time shows potent neuroprotective activity of the methanol extract of German chamomile against AlF₄⁻-induced oxidative stress in rats.
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Affiliation(s)
- V L Ranpariya
- Department of Pharmaceutical Sciences, Saurashtra University, Rajkot-360005, Gujarat, India
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Haleagrahara N, Siew CJ, Mitra NK, Kumari M. Neuroprotective effect of bioflavonoid quercetin in 6-hydroxydopamine-induced oxidative stress biomarkers in the rat striatum. Neurosci Lett 2011; 500:139-43. [PMID: 21704673 DOI: 10.1016/j.neulet.2011.06.021] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2011] [Revised: 06/06/2011] [Accepted: 06/10/2011] [Indexed: 01/25/2023]
Abstract
An increasing large body of research on Parkinson's disease (PD) has focused on the understanding of the mechanisms behind the potential neuro protection offered by antioxidants and iron chelating agents. In this study, the protective effect of the bioflavonoid quercetin on 6-hydroxydopamine (6-OHDA)-induced model of PD was investigated. PD was induced by a single intracisternal injection of 6-hydroxydopamine (300μg) to male Sprague-Dawley rats. Quercetin treatment (30mg/kg body weight) over 14 consecutive days markedly increased the striatal dopamine and antioxidant enzyme levels compared with similar measurements in the group treated with 6-OHDA alone. There was a significant decrease in protein carbonyl content in the striatum compared with that of rats that did not receive quercetin. A significant increase in neuronal survivability was also found with quercetin treatment in rats administered 6-OHDA. In conclusion, treatment with quercetin defended against the oxidative stress in the striatum and reduced the dopaminergic neuronal loss in the rat model of PD.
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Affiliation(s)
- Nagaraja Haleagrahara
- Division of Human Biology, Faculty of Medicine and Health, International Medical University, 57000 Kuala Lumpur, Malaysia.
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Panickar KS, Anderson RA. Mechanisms underlying the protective effects of myricetin and quercetin following oxygen-glucose deprivation-induced cell swelling and the reduction in glutamate uptake in glial cells. Neuroscience 2011; 183:1-14. [PMID: 21496478 DOI: 10.1016/j.neuroscience.2011.03.064] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 03/24/2011] [Accepted: 03/29/2011] [Indexed: 01/28/2023]
Abstract
The protective effects of the flavonoid polyphenols, myricetin and quercetin, were investigated on key features of ischemic injury in cultures including cell swelling and the reduction in glutamate uptake. C6 glial cells were exposed to oxygen-glucose deprivation (OGD) for 5 h and cell swelling was determined 90 min after the end of OGD. OGD-induced swelling was significantly blocked by both quercetin and myricetin although higher concentrations were required for quercetin. OGD-induced free radical production, a contributing factor in cell swelling, was significantly reduced by both myricetin and quercetin. However, depolarization of the inner mitochondrial membrane potential (ΔΨ(m)), the blockade of which generally reduces swelling, was significantly diminished by myricetin, but not quercetin. This indicated that quercetin could reduce swelling despite its inability to prevent depolarization of ΔΨ(m) possibly through other signaling pathways. Increased intracellular calcium ([Ca²+](i)) is an important characteristic of ischemic injury and is implicated in swelling. Both myricetin and quercetin attenuated the increase in [Ca²+](i). Further, a reduction in [Ca²+](i), through the use of nifedipine, nimodipine, verapamil, dantrolene, or BAPTA-AM, significantly reduced OGD-induced cell swelling indicating that one possible mechanism by which such flavonoids attenuate cell swelling may be through regulating [Ca²+](i). OGD-induced decrease in glutamate uptake was attenuated by myricetin, but not quercetin. Cyclosporin A, a blocker of the mitochondrial permeability transition (mPT) pore, but not FK506 (that does not block the mPT), attenuated the decline in glutamate uptake after OGD, indicating the involvement of the mPT in glutamate uptake. Our results indicated that while blockade of ΔΨ(m) may be sufficient to reduce swelling, it may not be a necessary factor, and that flavonoids reduce cell swelling by regulating [Ca²+](i). The differential effects of myricetin and quercetin on OGD-induced reduction on glutamate uptake may be due to their differential effects on mitochondria.
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Affiliation(s)
- K S Panickar
- Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD 20705, USA.
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Ahmad A, Khan MM, Hoda MN, Raza SS, Khan MB, Javed H, Ishrat T, Ashafaq M, Ahmad ME, Safhi MM, Islam F. Quercetin protects against oxidative stress associated damages in a rat model of transient focal cerebral ischemia and reperfusion. Neurochem Res 2011; 36:1360-71. [PMID: 21472457 DOI: 10.1007/s11064-011-0458-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2011] [Indexed: 12/17/2022]
Abstract
Experimental studies have demonstrated that oxidative stress and apoptosis play an important role in cerebral ischemic pathogenesis and may represent a target for treatment. The purpose of this study was to determine whether the quercetin dihydrate (Q) protects against cerebral ischemia neuronal damage. Male Wistar rats were subjected to transient middle cerebral artery occlusion (MCAO) for 2 h and reperfused for 72 h. Quercetin (30 mg/kg, i.p) was administrated 30 min before the onset of ischemia and after the ischemia at interval of 0, 24, 48, and 72 h. The administration of Q showed marked reduction in infarct size, reduced the neurological deficits in terms of behaviors, suppressed neuronal loss and diminished the p53 expression in MCAO rats. Q was found to be successful in upregulating the antioxidant status and lowering the TBARS level. Conversely, the elevated activity of poly (ADP-ribose) polymerase (PARP), and activity of caspase-3 in MCAO group was attenuated significantly in Q treated group when compared with MCAO group. Our study reveals that Q, as a powerful antioxidant, could prevent free radicals associated oxidative damage and morphological changes in the MCAO rats. Thus, it may have a therapeutic value for the treatment of stroke.
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Affiliation(s)
- Ajmal Ahmad
- Neurotoxicology Laboratory, Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi, 110062, India
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Arung ET, Furuta S, Ishikawa H, Kusuma IW, Shimizu K, Kondo R. Anti-melanogenesis properties of quercetin- and its derivative-rich extract from Allium cepa. Food Chem 2011. [DOI: 10.1016/j.foodchem.2010.07.067] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Arung ET, Wijaya Kusuma I, Shimizu K, Kondo R. Tyrosinase inhibitory effect of quercetin 4′-O-β-D-glucopyranoside from dried skin of red onion (Allium cepa). Nat Prod Res 2011; 25:256-63. [DOI: 10.1080/14786411003754256] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Flavonols and cardiovascular disease. Mol Aspects Med 2010; 31:478-94. [PMID: 20837053 DOI: 10.1016/j.mam.2010.09.002] [Citation(s) in RCA: 250] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 09/02/2010] [Accepted: 09/02/2010] [Indexed: 01/07/2023]
Abstract
Flavonols, and specially quercetin, are widely distributed in plants and are present in considerable amounts in fruits and vegetables. In addition to their anti-oxidant effect, flavonols interfere with a large number of biochemical signaling pathways and, therefore, physiological and pathological processes. There is solid evidence that, in vitro, quercetin and related flavonols exert endothelium-independent vasodilator effects, protective effect on nitric oxide and endothelial function under conditions of oxidative stress, platelet antiaggregant effects, inhibition of LDL oxidation, reduction of adhesion molecules and other inflammatory markers and prevention of neuronal oxidative and inflammatory damage. The metabolites of quercetin show partial protective effects on endothelial function and LDL oxidation. Quercetin produces undisputed antihypertensive and antiatherogenic effects, prevents endothelial dysfunction and protects the myocardium from ischemic damage. It has no clear effects on serum lipid profile and on insulin resistance. Human intervention trials with isolated flavonols demonstrate an antihypertensive effect. The meta-analysis of epidemiological studies show an inverse association between flavonol (together with flavone) intake and coronary heart disease and stroke. Therefore, although there is no solid proof yet, a substantial body of evidence suggests that quercetin may prevent the most common forms of cardiovascular disease contributing to the protective effects afforded by fruits and vegetables.
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Effects of Lycopene, Indole-3-Carbinol, and Luteolin on Nitric Oxide Production and iNOS Expression are Organ-Specific in Rats. Arh Hig Rada Toksikol 2010; 61:275-85. [DOI: 10.2478/10004-1254-61-2010-2012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Effects of Lycopene, Indole-3-Carbinol, and Luteolin on Nitric Oxide Production and iNOS Expression are Organ-Specific in RatsNatural compounds are known to modify NO content in tissues; however, the biological activity of polyphenol-rich food often does not correspond to the effects of individual polyphenols on NO synthase activity. The aim of this study was to see how natural compounds luteolin, indole-3-carbinol, and lycopene modify NO production in rat tissues and change the expression of the iNOS gene and protein. Indole-3-carbinol produced multiple effects on the NO level; it significantly decreased NO concentration in blood, lungs, and skeletal muscles and increased it in the liver. Indole-3-carbinol enhanced lipopolyssaccharide (LPS)-induced NO production in all rat organs. It decreased iNOS gene expression in the brain cortex of animals that did not receive LPS and up-regulated it in the LPS-treated animals. Lycopene increased the iNOS gene transcription rate in the brain cortex of LPS-treated animals. Luteolin did not modify NO production in any organ of LPS-untreated rats, nor did it affect gene expression in the liver. In the brain it slightly decreased iNOS gene expression. Luteolin decreased NO production in the blood of LPS-treated animals and the number of iNOS-positive cells in these animals. Our results suggest that changes in tissue NO levels caused by natural compounds cannot be predicted from their effect on NOS expression or activity obtained in model systems. This stresses the importance of direct measurements of NO and NOS expression in animal tissues.
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Prongay KD, Lewis AD, Hurn PD, Murphy SJ. Dietary soy may not confound acute experimental stroke infarct volume outcomes in ovariectomized female rats. Lab Anim 2010; 44:238-46. [PMID: 20147341 PMCID: PMC2888984 DOI: 10.1258/la.2009.009031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Oestrogen administration can alter experimental stroke outcomes. Soy as a source of phytoestrogens may therefore modulate responses in 'oestrogen-sensitive' stroke models, thus potentially confounding results. We evaluated the effects of dietary soy on acute infarct volumes in a pilot study using a rat focal stroke model. We hypothesized that ovariectomized (OVX) rats fed a soy-rich diet would have smaller acute infarct volumes than rats fed a soy-free diet. OVX rats were randomly assigned to a soy-free (n = 6) or a soy-rich (n = 6) diet for four weeks and weighed weekly. Following the dietary trial, rats underwent 2 h of middle cerebral artery occlusion (MCAO). Mean arterial blood pressure, rectal and temporalis muscle temperatures, arterial blood gases and blood glucose were recorded peri-ischaemia. Rats were euthanized 22 h following 2 h of MCAO. Brains were stained with 2,3,5-triphenyl tetrazolium chloride for acute infarct volume analysis. Uterine weight and histology were also evaluated as additional internal oestrogen-sensitive controls. Rats on the soy-free diet had greater gains in body weight (259 +/- 6% baseline body weight) than rats on the soy-rich diet (238 +/- 4% baseline body weight). No differences were seen in uterine weight and histology, peri-ischaemic physiological parameters and infarct volumes between the treatment groups. The results of this pilot study suggest that the dietary soy level tested may not alter acute infarct volumes in ischaemic female rat brain. More studies addressing the potential confounding effects of dietary soy in 'oestrogen-sensitive' stroke models are needed if investigators are to make informed choices regarding diets used in experimental stroke research.
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Affiliation(s)
- Kamm D. Prongay
- Department of Comparative Medicine, Oregon Health and Science University, Portland, OR 97239
| | - Anne D. Lewis
- Pathology Services, Division of Animal Resources, Oregon National Primate Research Center, Beaverton, OR 97006
| | - Patricia D. Hurn
- Department of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, Portland, OR 97239
| | - Stephanie J. Murphy
- Department of Comparative Medicine, Oregon Health and Science University, Portland, OR 97239
- Department of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, Portland, OR 97239
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