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Zhao J, Huang G, Fu Y, Lou Z, Yu H, Wang W, Mao D. Exposure to atrazine stimulates progesterone secretion and induces oxidative stress, inflammation, and apoptosis in the ovary of pseudopregnant rats. Chemosphere 2024; 356:141906. [PMID: 38583534 DOI: 10.1016/j.chemosphere.2024.141906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 03/04/2024] [Accepted: 04/03/2024] [Indexed: 04/09/2024]
Abstract
Atrazine (ATR) is one of the most commonly used herbicides worldwide. As an endocrine disruptor, it causes ovarian dysfunction, but the mechanism is unclear. We hypothesized that ATR could affect ovarian steroidogenesis, oxidative stress, inflammation, and apoptosis. In the current study, rats aged 28 days were treated with PMSG and HCG to obtain amounts of corpora lutea. Then, rats were injected with ATR (50 mg/kg/day) or saline (0.9%) for 7 days. Sera were collected to detect biochemical indices and progesterone (P4) level, ovaries were collected for antioxidant status, HE, qPCR, and WB analysis. Results showed that ATR exposure affected growth performance as well as serum TP, GLB, and ALB levels, increased serum P4 level and ovarian mRNA and protein levels of StAR, CYP11A1, and HSD3B. ATR treatment increased ovarian mRNA and protein levels of CREB but not PKA expression. ATR treatment increased ovarian mRNA abundances of Nrf-2 and Nqo1, MDA level, and decreased SOD, GST, and T-AOC levels. ATR exposure increased the mRNA abundances of pro-inflammatory cytokines including Tnf-α, Il-1β, Il-6, Il-18, and Inos. ATR exposure increased the mRNA and protein level of Caspase 3 and the ratio of BAX/BCL-2. In conclusion, NRF-2/NQO1 signaling pathway and CREB might be involved in the regulation of ATR in luteal steroidogenesis, oxidative stress, inflammation, and apoptosis in rat ovary.
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Affiliation(s)
- Jie Zhao
- Nanjing Agricultural University, Nanjing, 210095, China
| | | | - Yuting Fu
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhangbo Lou
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Hao Yu
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Wei Wang
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Dagan Mao
- Nanjing Agricultural University, Nanjing, 210095, China.
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2
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Mgbudom-Okah CJ, Abarikwu SO, Wegwu MO, Henkel R. Testosterone restores TM3 and TM4 cell viability, reduces reactive oxygen species generation, and protects against atrazine-induced stereological changes in rat testes. J Biochem Mol Toxicol 2024; 38:e23562. [PMID: 37842800 DOI: 10.1002/jbt.23562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/30/2023] [Accepted: 10/09/2023] [Indexed: 10/17/2023]
Abstract
In this study, we performed the stereological examination of rat testes and evaluated the protective effect of testosterone against atrazine (ATZ) toxicity in TM3 Leydig and TM4 Sertoli cells. Testosterone intake in rats increased the volumetric density of the seminiferous tubules; tubular diameter; germinal epithelial height; number of spermatogonia, primary and secondary spermatocytes, round spermatids, Sertoli cells, and Leydig cells; and Johnsen scores compared with the values after ATZ treatment (p < 0.05). Furthermore, testosterone increased the viability of TM3 cells and reduced reactive oxygen species (ROS) generation in TM4 cells compared to the ATZ-treated group. In conclusion, exogenous testosterone intake maintains testicular morphometry and spermatogenesis in rats, and minimizes cell death and ROS generation in testicular cell lines exposed to ATZ. However, TM4 cells are more responsive to testosterone-mediated regulation of ROS generation induced by ATZ than TM3 cells.
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Affiliation(s)
- Chidimma J Mgbudom-Okah
- Reproductive Biology and Molecular Toxicology Research Group, Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Sunny O Abarikwu
- Reproductive Biology and Molecular Toxicology Research Group, Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Matthew O Wegwu
- Reproductive Biology and Molecular Toxicology Research Group, Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Ralf Henkel
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- LogixX Pharma, Berkshire, UK
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3
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Abarikwu SO, Ezim OE, Ikeji CN, Farombi EO. Atrazine: cytotoxicity, oxidative stress, apoptosis, testicular effects and chemopreventive Interventions. Front Toxicol 2023; 5:1246708. [PMID: 37876981 PMCID: PMC10590919 DOI: 10.3389/ftox.2023.1246708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 09/19/2023] [Indexed: 10/26/2023] Open
Abstract
Atrazine (ATZ) is an environmental pollutant that interferes with several aspects of mammalian cellular processes including germ cell development, immunological, reproductive and neurological functions. At the level of human exposure, ATZ reduces sperm count and contribute to infertility in men. ATZ also induces morphological changes similar to apoptosis and initiates mitochondria-dependent cell death in several experimental models. When in vitro experimental models are exposed to ATZ, they are faced with increased levels of reactive oxygen species (ROS), cytotoxicity and decreased growth rate at dosages that may vary with cell types. This results in differing cytotoxic responses that are influenced by the nature of target cells, assay types and concentrations of ATZ. However, oxidative stress could play salient role in the observed cellular and genetic toxicity and apoptosis-like effects which could be abrogated by antioxidant vitamins and flavonoids, including vitamin E, quercetin, kolaviron, myricetin and bioactive extractives with antioxidant effects. This review focuses on the differential responses of cell types to ATZ toxicity, testicular effects of ATZ in both in vitro and in vivo models and chemopreventive strategies, so as to highlight the current state of the art on the toxicological outcomes of ATZ exposure in several experimental model systems.
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Affiliation(s)
- Sunny O. Abarikwu
- Reproductive Biology and Molecular Toxicology Research Group, Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Ogechukwu E. Ezim
- Reproductive Biology and Molecular Toxicology Research Group, Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Cynthia N. Ikeji
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ebenezer O. Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
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Das S, Sakr H, Al-Huseini I, Jetti R, Al-Qasmi S, Sugavasi R, Sirasanagandla SR. Atrazine Toxicity: The Possible Role of Natural Products for Effective Treatment. Plants (Basel) 2023; 12:2278. [PMID: 37375903 DOI: 10.3390/plants12122278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023]
Abstract
There are various herbicides which were used in the agriculture industry. Atrazine (ATZ) is a chlorinated triazine herbicide that consists of a ring structure, known as the triazine ring, along with a chlorine atom and five nitrogen atoms. ATZ is a water-soluble herbicide, which makes it capable of easily infiltrating into majority of the aquatic ecosystems. There are reports of toxic effects of ATZ on different systems of the body but, unfortunately, majority of these scientific reports were documented in animals. The herbicide was reported to enter the body through various routes. The toxicity of the herbicide can cause deleterious effects on the respiratory, reproductive, endocrine, central nervous system, gastrointestinal, and urinary systems of the human body. Alarmingly, few studies in industrial workers showed ATZ exposure leading to cancer. We embarked on the present review to discuss the mechanism of action of ATZ toxicity for which there is no specific antidote or drug. Evidence-based published literature on the effective use of natural products such as lycopene, curcumin, Panax ginseng, Spirulina platensis, Fucoidans, vitamin C, soyabeans, quercetin, L-carnitine, Telfairia occidentalis, vitamin E, Garcinia kola, melatonin, selenium, Isatis indigotica, polyphenols, Acacia nilotica, and Zingiber officinale were discussed in detail. In the absence of any particular allopathic drug, the present review may open the doors for future drug design involving the natural products and their active compounds.
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Affiliation(s)
- Srijit Das
- Department of Human and Clinical Anatomy, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat 123, Oman
| | - Hussein Sakr
- Department of Physiology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat 123, Oman
| | - Isehaq Al-Huseini
- Department of Physiology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat 123, Oman
| | - Raghu Jetti
- Department of Basic Medical Sciences, College of Applied Medical Sciences, King Khalid University, Abha 62521, Saudi Arabia
| | - Sara Al-Qasmi
- College of Medicine and Health Sciences, Sultan Qaboos University, Muscat 123, Oman
| | - Raju Sugavasi
- Department of Anatomy, Fathima Institute of Medical Sciences, Kadapa 516003, India
| | - Srinivasa Rao Sirasanagandla
- Department of Human and Clinical Anatomy, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat 123, Oman
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Tauchen J, Frankova A, Manourova A, Valterova I, Lojka B, Leuner O. Garcinia kola: a critical review on chemistry and pharmacology of an important West African medicinal plant. Phytochem Rev 2023:1-47. [PMID: 37359709 PMCID: PMC10205037 DOI: 10.1007/s11101-023-09869-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 04/03/2023] [Indexed: 06/28/2023]
Abstract
Garcinia kola Heckel (Clusiaceae) is a tree indigenous to West and Central Africa. All plant parts, but especially the seeds, are of value in local folklore medicine. Garcinia kola is used in treatment of numerous diseases, including gastric disorders, bronchial diseases, fever, malaria and is used to induce a stimulating and aphrodisiac effect. The plant is now attracting considerable interest as a possible source of pharmaceutically important drugs. Several different classes of compounds such as biflavonoids, benzophenones, benzofurans, benzopyran, vitamin E derivatives, xanthones, and phytosterols, have been isolated from G. kola, of which many appears to be found only in this species, such as garcinianin (found in seeds and roots), kolanone (fruit pulp, seeds, roots), gakolanone (stem bark), garcinoic acid, garcinal (both in seeds), garcifuran A and B, and garcipyran (all in roots). They showed a wide range of pharmacological activities (e.g. analgesic, anticancer, antidiabetic, anti-inflammatory, antimalarial, antimicrobial, hepatoprotective and neuroprotective effects), though this has only been confirmed in animal models. Kolaviron is the most studied compound and is perceived by many studies as the active principle of G. kola. However, its research is associated with significant flaws (e.g. too high doses tested, inappropriate positive control). Garcinol has been tested under better conditions and is perhaps showing more promising results and should attract deeper research interest (especially in the area of anticancer, antimicrobial, and neuroprotective activity). Human clinical trials and mechanism-of-action studies must be carried out to verify whether any of the compounds present in G. kola may be used as a lead in the drug development.
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Affiliation(s)
- Jan Tauchen
- Department of Food Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech Republic
| | - Adela Frankova
- Department of Food Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech Republic
| | - Anna Manourova
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Irena Valterova
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences, Prague, Czech Republic
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Bohdan Lojka
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Olga Leuner
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences, Prague, Czech Republic
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Tesi EP, Ben‐Azu B, Mega OO, Mordi J, Knowledge OO, Awele ED, Rotu RA, Emojevwe V, Adebayo OG, Eneni OA. Kolaviron, a flavonoid‐rich extract ameliorates busulfan‐induced chemo‐brain and testicular damage in male rats through inhibition of oxidative stress, inflammatory, and apoptotic pathways. J Food Biochem 2022; 46:e14071. [DOI: 10.1111/jfbc.14071] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 12/19/2021] [Accepted: 12/20/2021] [Indexed: 12/12/2022]
Affiliation(s)
- Edesiri P. Tesi
- Department of Science Laboratory Technology Delta State Polytechnic Ogwashi‐Uku Nigeria
| | - Benneth Ben‐Azu
- Department of Pharmacology Faculty of Basic Medical Science, College of Health Sciences Delta State University Abraka Nigeria
| | - Oyovwi O. Mega
- Department of Basic Medical Sciences Achievers University Owo Nigeria
| | - Joseph Mordi
- Department of Biochemistry Faculty of Basic Medical Science, College of Health Sciences Delta State University Abraka Nigeria
| | - Obed O. Knowledge
- Department of Science Laboratory Technology Delta State Polytechnic Ogwashi‐Uku Nigeria
| | - Egbuchua D. Awele
- Department of Science Laboratory Technology Delta State Polytechnic Ogwashi‐Uku Nigeria
| | - Rume A. Rotu
- Department of Physiology Faculty of Basic Medical Science College of Medicine University of Ibadan Ibadan Nigeria
| | - Victor Emojevwe
- Department of Physiology Faculty of Basic Medical Science University of Medical Sciences Ondo Nigeria
| | - Olusegun G. Adebayo
- Neurophysiology Unit, Department of Physiology PAMO University of Medical Sciences Port‐Harcourt Nigeria
| | - Okubo Aya‐Ebi Eneni
- Department of Pharmacology and Toxicology Faculty of Pharmacy Niger Delta University Amassoma Nigeria
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7
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Cetkovic-Cvrlje M, Rogan S, Barbaro E. Garcinia kola treatment exhibits immunomodulatory properties while not affecting type 1 diabetes development in an experimental mouse model. Int J Immunopathol Pharmacol 2022. [PMCID: PMC8777369 DOI: 10.1177/20587384211069831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective T cells orchestrate an inflammatory response that destroys pancreatic insulin-producing
β cells during the development of autoimmune type 1 diabetes (T1D). Garcinia
kola Heckel (GK) is a plant widely exploited in West African traditional
medicine. Some of the therapeutic effects of GK nut’s extract (GKE) have been suggested
to be due to its anti-inflammatory potential. Since GKE has never been investigated in a
T1D experimental model, nor in the T cells’ context, we aimed to determine whether GKE
exhibits antidiabetic properties and affects T cells by its anticipated
anti-inflammatory action. Methods The effect of aqueous GKE (aGKE) ingestion, 100 mg/kg daily by drinking water over the
period of 6 weeks, has been tested in a low-dose streptozotocin-induced (LDSTZ) mouse
model of autoimmune T1D. T cells were studied in vitro and in
vivo in mice treated by aGKE. Results The results showed that aGKE treatment, which started a week before induction of
disease, neither delayed the development of T1D, nor reduced glycemia severity.
Interestingly, aGKE treatment did affect T cells and their function, significantly
decreasing the frequency of helper (TH) and cytotoxic (TC) T
cells, while elevating the levels of pro-inflammatory cytokines, TNF-α, IL-6, and IFN-γ,
and suppressing IL-2. Conclusion In conclusion, our results did not confirm the antidiabetic property of GKE, while
suggesting its therapeutic exploration in TH2-dependent pathologies that
benefit from an aggravated TH1 response, such as allergies.
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Affiliation(s)
- Marina Cetkovic-Cvrlje
- Department of Biological Sciences andImmunology Laboratory, St Cloud State University, St Cloud, MN, USA
| | - Shana Rogan
- Department of Biological Sciences andImmunology Laboratory, St Cloud State University, St Cloud, MN, USA
| | - Emily Barbaro
- Department of Biological Sciences andImmunology Laboratory, St Cloud State University, St Cloud, MN, USA
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Abarikwu SO, Njoku RCC, John IG, Amadi BA, Mgbudom-Okah CJ, Onuah CL. Antioxidant and anti-inflammatory protective effects of rutin and kolaviron against busulfan-induced testicular injuries in rats. Syst Biol Reprod Med 2021; 68:151-161. [PMID: 34753368 DOI: 10.1080/19396368.2021.1989727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
There are few treatment options, including the use of natural phenolics-based combination therapy for mitigating male infertility conditions associated with chemotherapy. Busulfan is an anti-cancer drug that leads to testicular problems in humans. Here, we studied the effect of co-treatment of rutin and kolaviron against busulfan-induced testis damage. Young adult male Wistar rats were intraperitoneally injected busulfan (4 mg/kg b.w), and then orally administered rutin (30 mg/kg b.w), and kolaviron (50 mg/kg b.w) alone and combined for 60 days. Results revealed that rutin and kolaviron alone or in combination reversed busulfan-induced increase in oxidative stress along with sperm quality of treated animals. However, kolaviron and rutin separately improved the concentrations of MDA and GSH and sperm quality more than when they were combined. Similarly, rutin and kolaviron separately or in combination preserved spermatogenesis and relieved busulfan-induced increase in nitric oxide concentration, myeloperoxidase and 3β-hydroxysteroid dehydrogenase activities. Co-supplementation with kolaviron but not rutin nor when rutin was combined with kolaviron also improved the testicular level of tumor necrosis-alpha. Finally, the histological features in the testes caused by busulfan were reversed by rutin, whereas treatment with kolaviron alone or in combination with rutin partially protected the testis from busulfan-induced injury as demonstrated by the appearance of few germ cells, damaged tubules, loss of round spermatids and defoliation of the seminiferous epithelium. Thus, the combined treatment regimen of rutin and kolaviron sparingly prevented busulfan-induced testicular injuries in rats.Abbreviations: CAT: Catalase; GSH: Glutathione; 3β-HSD: 3β- hydroxysteroid Dehydrogenase; MDA: Malondialdehyde; TNF-α: Tumor necrosis-alpha; BUS: Busulfan; RUT: Rutin; KV: Kolaviron; TBARS: Thiobarbituric Acid Reactive Substances; MPO: Myeloperoxidase; ELISA: Enzyme-Linked Immunoassay; NAD: Nicotinamide Adenine Dinucleotide (oxidized); ROS: Reactive Oxygen Species.
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Affiliation(s)
- Sunny O Abarikwu
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Rex-Clovis C Njoku
- Department of Chemistry/Biochemistry & Molecular Biology, Alex Ekwueme-Federal University Ndufu-Alike, Ikwo, Nigeria
| | - Ifeoma G John
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Benjamin A Amadi
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | | | - Chigozie L Onuah
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
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Erukainure OL, Salau VF, Chukwuma CI, Islam MS. Kolaviron: A Biflavonoid with Numerous Health Benefits. Curr Pharm Des 2021; 27:490-504. [PMID: 33185157 DOI: 10.2174/1381612826666201113094303] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 07/23/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The increasing interests on the healing properties of medicinal plants have led to a paradigm shift from the use of synthetic drug to the search of natural medicines for the treatment and management of several diseases. Like other phenolics flavonoids have been continuously explored for their medicinal benefits, with their potent antioxidant activity being a major interest. Kolaviron (KVN) is a biflavonoid isolated from Garcinia kola Heckel, which has been reported for its potent antioxidant and anti-inflammatory properties. These properties have been explored in several disease models including reproductive toxicity, cardiotoxicity, diabetes mellitus, gastrotoxicity and hepatotoxicity. OBJECTIVES The present study was aimed to review the reported medicinal properties of KVN in order to provide some guidelines and direction to researchers on KVN research. METHODS A literature search was conducted with the aim of identifying peer-reviewed published data on KVN and their biological activities. Different academic and/or scientific search engines were utilized including but not limited to Google Scholar, PubMed, ScienceDirect and so on. RESULTS Among all the studied disease models obtained from the literatures, the effect of KVN on reproductive toxicity was the most studied as it represented 25% of all the studies, followed by neuroprotective, cardioprotective and hepatoprotective activities of Kolaviron. From our identified studies, KVN has been shown to have antidiabetic, cardioprotective, neuroprotective, hematoprotective, nephroprotective, gastroprotective, hepatoprotective activities. KVN also has effects on malaria and reproductive health, which can be explored for novel drug and nutraceutical developments for related ailments. Unfortunately, while toxicity data are lacking, most studies are limited to in vitro and/or in vivo models, which may impede translation in this area of research. CONCLUSION Based on data gathered from the literature search, it is evident that KVN possesses numerous health benefits, which can be attributed to its potent antioxidant and anti-inflammatory activities. However, more studies are required in this area of research to validate the medicinal value of kolaviron, which may positively influence the economic value of plant, Garcinia kola.
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Affiliation(s)
- Ochuko L Erukainure
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
| | - Veronica F Salau
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
| | - Chika I Chukwuma
- Center on Quality of Health and Living (CQHL), Faculty of Health and Environmental Sciences, Central University of Technology, Bloemfontein, 9300, Free State, South Africa
| | - Md Shahidul Islam
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
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10
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Abarikwu SO, Costa GMJ, de Lima E Martins Lara N, Lacerda SMSN, de França LR. Atrazine impairs testicular function in BalB/c mice by affecting Leydig cells. Toxicology 2021; 455:152761. [PMID: 33766575 DOI: 10.1016/j.tox.2021.152761] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 03/07/2021] [Accepted: 03/18/2021] [Indexed: 11/21/2022]
Abstract
Several studies have reported the effects of atrazine on the gonads of many experimental models. However, the short-term effects of in vivo exposure to atrazine on the testes of mice are not well clarified. Here we reported that adult BalB/c mice exposed to atrazine (50 mg kg-1 body weight) by gavage for three consecutive days have reduced numbers of 3β-hydroxysteroid dehydrogenase positive Leydig cells (LCs), associated with increased in situ cell death fluorescence and caspase-3 immuno-expression in the testes. Consequently, immunostaining for cell cycle gene regulators showed increased expressions of p45, accompanied with increased expressions of cyclin D2 and E2. Histological observations of the gonads showed reduced number of germ cells in particular areas, sloughed seminiferous epithelium, presence of giant apoptotic cells close to the seminiferous tubule lumen and in the epididymal lumen along with low numbers of Leydig cells in the testicular interstitial areas. Similarly, LCs isolated from the testes of BalB/c mice that were exposed to atrazine (0.5, 25, 50 mg kg-1 body weight) in the same manner as in the first experiment presented dose-dependent increased caspase-3 activity, decreased cell viability, intratesticular and serum testosterone concentrations and LCs testosterone secretion. In summary, atrazine appears to directly decrease the number of testosterone secreting LCs in mice through apoptosis.
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11
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Olaleye O, Titilope O, Moses O. Possible health benefits of polyphenols in neurological disorders associated with COVID-19. Acta fac medic Naissensis 2021. [DOI: 10.5937/afmnai38-30190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Novel Coronavirus disease 2019 (COVID-19) represents an emergent global health burden that has challenged the health systems worldwide. Since its sudden upsurge in 2019, many COVID-19 patients have exhibited neurological symptoms and complications. Till now, there is no known effective established drug against the highly contagious COVID-19 infection despite the frightening associated mortality rate. This article aims to present the mechanism of action of coronavirus-2 (SARS-CoV-2), the clinical neurological manifestations displayed by COVID-19 patients, and present polyphenols with neuroprotective ability that can offer beneficial effects against COVID-19-mediated neuropathology. Reports from COVID-19 clinical studies, case reports, and other related literature were evaluated for this review. Neurological complications of COVID-19 include anosmia, acute cerebrovascular disease, acute disseminated post-infectious encephalomyelitis, encephalitis, etc. Also, SARS-CoV-2 sould be a neurotropic vіruѕ due to its iѕolatіon from serebroѕrіnal fluіd. Multіrle neurologіsal damages displayed by COVID-19 patients might be due to hyperinflammation associated with SARS-CoV-2 infections. Resveratrol, kolaviron, quercetin and apigenin are polyphenols with proven anti-inflammatory and therapeutic properties that can extenuate the adverse effects of COVID-19. These polyphenols have been documented to suppress c-Jun N-terminal kinase (JNK), phosphoinositide-3-kinase (PI3-K), extrasellularѕіgnal-regulated kinase (ERK), nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-kB) and mіtogen-astіvated protein kіnaѕe (MAPK) pathways which are essential in the pathogenesis of COVID-19. They also showed significant inhibitory activities against SARS-CoV-2 proteins. Taken together, these polyphenols may offer neuroprotective benefits against COVID-19 mediated neuropathology via modulation of the pathogenic pathways.
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Salau VF, Erukainure OL, Bharuth V, Ibeji CU, Olasehinde TA, Islam MS. Kolaviron stimulates glucose uptake with concomitant modulation of metabolic activities implicated in neurodegeneration in isolated rat brain, without perturbation of tissue ultrastructural morphology. Neurosci Res 2020; 169:57-68. [PMID: 32645363 DOI: 10.1016/j.neures.2020.06.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/22/2020] [Accepted: 06/30/2020] [Indexed: 02/07/2023]
Abstract
Reduced glucose uptake usually occurs in type 2 diabetes due to down-regulation of brain glucose transporters. The potential of kolaviron, a biflavonoid from Garcinia kola to stimulate glucose uptake and suppress glucose-induced oxidative toxicity were investigated in rat brain. Its molecular interactions with the target proteins were investigated in silico. Kolaviron was incubated with excised rat brain in the presence of glucose for 2 h, with metformin serving as a positive control. Kolaviron caused a significant (p < 0.05) increase in glucose uptake, glutathione level, superoxide dismutase, catalase, ATPase, ENTPDase and 5'-nucleotidase activities, while concomitantly depleting malondialdehyde level, acetylcholinesterase and butyrylcholinesterase activities compared to brains incubated with glucose only. Electron microscopy (SEM and TEM) analysis revealed kolaviron had little or no effect on the ultrastructural morphology of brain tissues as evidenced by the intact dendritic and neuronal network, blood vessels, mitochondria, synaptic vesicles, and pre-synaptic membrane. SEM-EDX analysis revealed a restorative effect of glucose-induced alteration in brain elemental concentrations, with total depletion of aluminum and zinc. MTT analysis revealed kolaviron had no cytotoxic effect on HT-22 cells. Molecular docking revealed a potent interaction between kolaviron and catalase at the SER114 and MET350 residues, with a binding energy of 12 kcal/mol. Taken together, these results portray the potential of kolaviron to stimulate glucose uptake while concomitantly coffering a neuroprotective effect.
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Affiliation(s)
- Veronica F Salau
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa; Department of Biochemistry, Veritas University, Bwari, Abuja, Nigeria
| | - Ochuko L Erukainure
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa; Department of Pharmacology, University of the Free State, Bloemfontein, 9300, South Africa
| | - Vishal Bharuth
- Microscopy and Microanalysis Unit, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
| | - Collins U Ibeji
- Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, University of Nigeria, Nsukka, 410001, Nigeria
| | - Tosin A Olasehinde
- Department of Biochemistry and Microbiology, University of Fort Hare, Alice, Eastern Cape 5700, South Africa
| | - Md Shahidul Islam
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa.
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Omotoso GO, Mutholib NY, Abdulsalam FA, Bature AI. Kolaviron protects against cognitive deficits and cortico-hippocampal perturbations associated with maternal deprivation in rats. Anat Cell Biol 2020; 53:95-106. [PMID: 32274254 PMCID: PMC7118269 DOI: 10.5115/acb.19.160] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/23/2019] [Accepted: 10/04/2019] [Indexed: 11/27/2022] Open
Abstract
Prolonged separation of pups from their mother in early postnatal period can interfere with normal growth and development, resulting in different behavioral changes similar to features of schizophrenia in man. This study explored the cytoprotective action of kolaviron, a biflavonoid, on the prefrontal cortex and hippocampus of maternally deprived Wistar rats. Eight months old female rats were time-mated, and after delivery their pups were randomly assigned into four groups; group A received 0.5 ml of normal saline, group B received kolaviron orally (200 mg/kg/bw) on postnatal days (PND) 21–35, group C were maternally deprived on PND 9 for 24 hours, while group D were also maternally deprived on PND 9 for 24 hours, and then received kolaviron orally (200 mg/kg/bw) on PND 21–35. Behavioral studies (open field test, Morris water test, and Y-maze test) were conducted after the experiment prior to sacrifice. Some of the rats were anesthetized with ketamine and perfusion-fixed with 0.1 M phosphate buffered saline and 4% paraformaldehyde, while others were sacrificed by cervical dislocation for enzyme studies. The hippocampus and prefrontal cortex were excised from the brain and processed for tissue histology, histochemistry, and enzymatic analysis. Results revealed behavioral deficits, oxidative stress, degenerative changes, and astrocytosis in the prefrontal cortex and hippocampus of maternally deprived rats, but intervention with kolaviron caused significant improvement in neurobehavior, morphology, and neurochemistry in these brain areas. We concluded that kolaviron could protect the brain against neurological consequences of nutritional and environmental insults arising from maternal separation in early postnatal period.
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Affiliation(s)
- Gabriel Olaiya Omotoso
- Department of Anatomy, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
| | | | | | - Abdulkabir I Bature
- Department of Anatomy, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
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Nkanu EE, Ujong UP, Otu GU, Etetim A. Impact of kolaviron(a biflavonoid) on lipid peroxidation, thromboxane and cyclooxygenase activity in dexamethasone treated ats. Scientific African 2019; 6:e00162. [DOI: 10.1016/j.sciaf.2019.e00162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Farombi EO, Awogbindin IO, Farombi TH, Oladele JO, Izomoh ER, Aladelokun OB, Ezekiel IO, Adebambo OI, Abah VO. Neuroprotective role of kolaviron in striatal redo-inflammation associated with rotenone model of Parkinson's disease. Neurotoxicology 2019; 73:132-141. [PMID: 30930291 DOI: 10.1016/j.neuro.2019.03.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 03/20/2019] [Accepted: 03/20/2019] [Indexed: 02/06/2023]
Abstract
Parkinson's disease is the most prevalent movement disorder. Currently, therapies are palliative with associated irreversible behavioural incompetence. Here, we investigated the ability of kolaviron (KV), an anti-inflammatory biflavonoid isolated form Garcinia kola seeds, to rescue striatal neuronal damage and redo-inflammation in rats exposed to rotenone (ROT). Aged rats exposed to 11 days of rotenone intoxication were treated with KV either concurrently or for 18 days. The 18-day regimen included 7 days of pre-treatment prior 11-day concurrent ROT-KV treatment. Rotenone-exposed rats lost weight appreciably and travelled less distance with reduced speed, decline efficiency to maintain a straight path, enhanced freezing, increased immobile episodes and poor hole recognition. The motor incompetence was attributed to enhanced striatal neurodegeneration, increased alpha synuclein formation and reduced tyrosine hydroxylase expression. ROT intoxication significantly increased reactive species production, which co-existed with induction of striatal antioxidant system and damage to biomolecules. ROT additionally upregulated COX-2 expression, enhanced myeloperoxidase activity and increased concentration of striatal inteleukine-6 (IL-6), IL-1β and tumour necrosis factor (TNF-α). Treatment with kolaviron reversed the rotenone-associated locomotor impairment and exploratory deficits, motor/neuromuscular incompetence, striatal neurodegeneration, neurobiochemical imbalance, altered antioxidant defence system and neuroinflammation. KV-treated rats showed improved capacity to maintain efficient gait with minimal rigidity and enhanced coordination. Taken together, kolaviron exhibited neuroprotective properties, which may be beneficial for the prevention and management of Parkinson's disease, via antioxidant, anti-inflammatory and anti-apoptotic mechanisms.
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Affiliation(s)
- Ebenezer O Farombi
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Ifeoluwa O Awogbindin
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Temitope H Farombi
- Department of Medicine, College of Medicine, University of Ibadan, University College Hospital, Ibadan, Nigeria; Chief Tony Anenih Geriatric Center, University College Hospital, Ibadan, Nigeria
| | - Johnson O Oladele
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Edirin R Izomoh
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Oladimeji B Aladelokun
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ibukunoluwa O Ezekiel
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Oluwabunmi I Adebambo
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Victoria O Abah
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
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Ojo OB, Amoo ZA, Saliu IO, Olaleye MT, Farombi EO, Akinmoladun AC. Neurotherapeutic potential of kolaviron on neurotransmitter dysregulation, excitotoxicity, mitochondrial electron transport chain dysfunction and redox imbalance in 2-VO brain ischemia/reperfusion injury. Biomed Pharmacother 2019; 111:859-72. [DOI: 10.1016/j.biopha.2018.12.144] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 12/26/2018] [Accepted: 12/31/2018] [Indexed: 02/05/2023] Open
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Čermak AMM, Pavičić I, Želježić D. Redox imbalance caused by pesticides: a review of OPENTOX-related research. Arh Hig Rada Toksikol 2018; 69:126-34. [PMID: 29990294 DOI: 10.2478/aiht-2018-69-3105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 05/01/2018] [Indexed: 11/20/2022] Open
Abstract
Pesticides are a highly diverse group of compounds and the most important chemical stressors in the environment. Mechanisms that could explain pesticide toxicity are constantly being studied and their interactions at the cellular level are often observed in well-controlled in vitro studies. Several pesticide groups have been found to impair the redox balance in the cell, but the mechanisms leading to oxidative stress for certain pesticides are only partly understood. As our scientific project "Organic pollutants in environment - markers and biomarkers of toxicity (OPENTOX)" is dedicated to studying toxic effects of selected insecticides and herbicides, this review is focused on reporting the knowledge regarding oxidative stress-related phenomena at the cellular level. We wanted to single out the most important facts relevant to the evaluation of our own findings from studies conducted on in vitro cell models.
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Omotoso GO, Olajide OJ, Gbadamosi IT, Rasheed MA, Izuogu CT. Kolaviron Protects the Prefrontal Cortex and Hippocampus against Histomorphological and Neurobehavioural Changes in Cuprizone Model of Multiple Sclerosis. Malays J Med Sci 2018; 25:50-63. [PMID: 30918455 PMCID: PMC6422579 DOI: 10.21315/mjms2018.25.2.6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/06/2018] [Indexed: 12/18/2022] Open
Abstract
Background This study explored the efficacy of kolaviron-a biflavonoid complex isolated from the seeds of Garcinia kola-in protecting against cuprizone (CPZ)-induced demyelination in both the prefrontal cortex and the hippocampus of Wistar rats. Methodology Thirty rats were treated to receive 0.5 mL phosphate-buffered saline (group A, control), 0.5 mL corn oil (group B), 0.2% CPZ (group C), for 6 weeks, 0.2% CPZ for 3 weeks and then 200 mg/kg of Kv for 3 weeks (group D), or 200 mg/kg of Kv for 3 weeks followed by 0.2% CPZ for 3 weeks (group E). Rats were assessed for exploratory functions and anxiety-like behaviour before being euthanised and perfused transcardially with 4% paraformaldehyde. Prefrontal and hippocampal thin sections were stained in hematoxylin and eosin and cresyl fast violet stains. Results CPZ-induced demyelination resulted in behavioural impairment as seen by reduced exploratory activities, rearing behaviour, stretch attend posture, center square entry, and anxiogenic characteristics. Degenerative changes including pyknosis, karyorrhexis, neuronal hypertrophy, and reduced Nissl integrity were also seen. Animals treated with Kv showed significant improvement in behavioural outcomes and a comparatively normal cytoarchitectural profile. Conclusion Kv provides protective roles against CPZ-induced neurotoxicity through prevention of ribosomal protein degradation.
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Affiliation(s)
- Gabriel Olaiya Omotoso
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Ilorin, Ilorin, Nigeria
| | - Olayemi Joseph Olajide
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Ilorin, Ilorin, Nigeria.,International Center for Genetic Engineering and Biotechnology, Padriciano 99, Trieste-Italy
| | - Ismail Temitayo Gbadamosi
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Ilorin, Ilorin, Nigeria
| | - Mikail Abiodun Rasheed
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Ilorin, Ilorin, Nigeria
| | - Chiazokam Tochukwu Izuogu
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Ilorin, Ilorin, Nigeria
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Abarikwu SO, Duru QC, Njoku RCC, Amadi BA, Tamunoibuomie A, Keboh E. Effects of co-exposure to atrazine and ethanol on the oxidative damage of kidney and liver in Wistar rats. Ren Fail 2018; 39:588-596. [PMID: 28741978 PMCID: PMC6446176 DOI: 10.1080/0886022x.2017.1351373] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Both ethanol (EtoH) and atrazine (ATZ) have hepatic and nephro-toxic effects in rats. In the present study, the toxicity of EtoH (5 g kg−1) on the kidney and liver in the absence or in the presence of different doses of ATZ (50, 100, 300 mg kg−1) was evaluated after 21 days in rats. Results showed that the mixture effects on catalase and superoxide dismutase activities were more severe in both tissues compared to EtoH alone, especially as the dose of ATZ was increased. Hepatic malondialdehyde level (an index of lipid peroxidation) was increased from 20.32% in the EtoH +50 mg kg−1 ATZ-treated rats to 34% in the EtoH +300 mg kg−1 ATZ-treated rats compared to the EtoH values. Renal malondialdehyde values remain as high as 81% in the EtoH-treated rats and the different combine exposure groups. Furthermore, as the dose of ATZ in the mixture was increased, serum uric acid level increased compared to the EtoH values. When the EtoH +300 mg kg−1 ATZ-animals were pretreated with curcumin (an antioxidant), the histopathological changes and peroxidative damages in both tissues were blocked. The exposure of EtoH-treated rats to ATZ enhanced renal and hepatic peroxidative damages in rats.
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Affiliation(s)
- Sunny O Abarikwu
- a Department of Biochemistry , University of Port Harcourt , Choba , Nigeria
| | - Queen C Duru
- a Department of Biochemistry , University of Port Harcourt , Choba , Nigeria
| | - Rex-Clovis C Njoku
- a Department of Biochemistry , University of Port Harcourt , Choba , Nigeria
| | - Benjamin A Amadi
- a Department of Biochemistry , University of Port Harcourt , Choba , Nigeria
| | - Aseme Tamunoibuomie
- a Department of Biochemistry , University of Port Harcourt , Choba , Nigeria
| | - Enebimoere Keboh
- a Department of Biochemistry , University of Port Harcourt , Choba , Nigeria
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Abstract
Because atrazine is a widely used herbicide, its adverse effects on the reproductive system have been extensively researched. In this study, we investigated the effects of atrazine exposure on porcine oocyte maturation and the possible mechanisms. Our results showed that the rates of oocyte maturation significantly decreased after treatment with 200 μM atrazine in vitro. Atrazine treatment resulted in abnormal spindle morphology but did not affect actin distribution. Atrazine exposure not only triggered a DNA damage response but also decreased MPF levels in porcine oocytes. Our results also revealed that atrazine worsened porcine oocyte quality by causing excessive accumulation of superoxide radicals, increasing cathepsin B activity, and decreasing the GSH level and mitochondrial membrane potential. Furthermore, atrazine decreased developmental competence of porcine oocytes up to the blastocyst stage and changed some properties: cell numbers, apoptosis, and related gene expression levels. Collectively, our results indicate that porcine oocyte maturation is defective after atrazine treatment at least through disruption of spindle morphology, MPF activity, and mitochondrial function and via induction of DNA damage, which probably reduces developmental competence.
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Hu W, Zhou PH, Rao T, Zhang XB, Wang W, Zhang LJ. Adrenomedullin attenuates interleukin-1β-induced inflammation and apoptosis in rat Leydig cells via inhibition of NF-κB signaling pathway. Exp Cell Res 2015; 339:220-30. [PMID: 26511504 DOI: 10.1016/j.yexcr.2015.10.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 10/20/2015] [Accepted: 10/23/2015] [Indexed: 02/07/2023]
Abstract
The aim of this paper is to investigate the protective effects of adrenomedullin (ADM) on interleukin-1β (IL-1β)-induced inflammation and apoptosis in rat Leydig cells and its underlying molecular mechanisms. Leydig cells were isolated from adult Sprague-Dawley rats. The cell culture was established by adding ADM 2h prior to 24h treatment with IL-1β-induced cytotoxicity. We detected cell viability and concentrations of testosterone, reactive oxygen species (ROS), malondialdehyde (MDA), and reduced glutathione (GSH). Gene expression levels were measured for inducible nitric oxide synthase (iNOS) and cyclo-oxygenase-2 (COX-2). Concentrations were detected for nitric oxide (NO) and prostaglandin E2 (PGE2). Apoptosis was assessed using terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL). Levels of gene expression and protein were detected for Bcl-2, Bax, caspase-3, and poly adenosine diphosphate-ribose polymerase (PARP). Protein levels were measured for nuclear factor kappa B (NF-κB) p65 and IκBα. ADM reduced IL-1β-induced cytotoxicity. ADM pretreatment significantly increased testosterone concentrations and decreased ROS, MDA, and GSH concentrations. ADM pretreatment inhibited IL-1β-induced inflammation in Leydig cells by decreasing the gene expression levels of iNOS and COX-2, as well as the concentrations of NO and PGE2. ADM pretreatment further decreased the number of TUNEL-positive stained Leydig cells, as confirmed by the increase in gene expression and protein levels of Bcl-2 and the decrease of Bax, caspase-3, and PARP levels. Moreover, ADM pretreatment inhibited NF-κB p65 phosphorylation and IκBα phosphorylation and degradation. ADM has potential anti-inflammatory and anti-apoptotic properties in IL-1β-induced rat Leydig cells, which might be related to NF-κB signaling pathway.
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Affiliation(s)
- Wei Hu
- Department of Urology, Renmin Hospital of Wuhan University, No. 238 Liberation Road, Wuhan 430060, Hubei Province, China
| | - Pang-hu Zhou
- Department of Orthopedics, Renmin Hospital of Wuhan University, No. 238 Liberation Road, Wuhan 430060, Hubei Province, China.
| | - Ting Rao
- Department of Urology, Renmin Hospital of Wuhan University, No. 238 Liberation Road, Wuhan 430060, Hubei Province, China
| | - Xiao-bin Zhang
- Department of Urology, Renmin Hospital of Wuhan University, No. 238 Liberation Road, Wuhan 430060, Hubei Province, China
| | - Wei Wang
- Department of Urology, Renmin Hospital of Wuhan University, No. 238 Liberation Road, Wuhan 430060, Hubei Province, China
| | - Li-jun Zhang
- Department of Urology, Renmin Hospital of Wuhan University, No. 238 Liberation Road, Wuhan 430060, Hubei Province, China
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Abarikwu SO, Duru QC, Chinonso OV, Njoku RC. Antioxidant enzymes activity, lipid peroxidation, oxidative damage in the testis and epididymis, and steroidogenesis in rats after co-exposure to atrazine and ethanol. Andrologia 2015; 48:548-57. [DOI: 10.1111/and.12478] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/17/2015] [Indexed: 12/18/2022] Open
Affiliation(s)
- S. O. Abarikwu
- Department of Biochemistry; University of Port Harcourt; Choba Nigeria
| | - Q. C. Duru
- Department of Biochemistry; University of Port Harcourt; Choba Nigeria
| | - O. V. Chinonso
- Department of Biochemistry; University of Port Harcourt; Choba Nigeria
| | - R.-C. Njoku
- Department of Biochemistry; University of Port Harcourt; Choba Nigeria
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Adedara IA, Owoeye O, Aiyegbusi MA, Dagunduro JO, Daramola YM, Farombi EO. Kolaviron protects against benzo[a]pyrene-induced functional alterations along the brain-pituitary-gonadal axis in male rats. Environ Toxicol Pharmacol 2015; 40:459-470. [PMID: 26280929 DOI: 10.1016/j.etap.2015.07.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/19/2015] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
Exposure to benzo[a]pyrene (B[a]P) is well reported to be associated with neurological and reproductive dysfunctions. The present study investigated the influence of kolaviron, an isolated biflavonoid from the seed of Garcinia kola, on functional alterations along the brain-pituitary-gonadal axis in male rats exposed to B[a]P. Benzo[a]pyrene was orally administered at a dose of 10mg/kg alone or orally co-administered with kolaviron at 100 and 200mg/kg for 15 consecutive days. Administration of B[a]P significantly (p<0.05) decreased plasma levels of pituitary hormones namely follicle-stimulating hormone (FSH) and prolactin but increased luteinizing hormone (LH) by 47%, 55% and 20.9%, respectively, when compared with the control. The significant decrease in gonadosomatic index (GSI) was accompanied by significant decrease in testosterone production and sperm functional parameters in the B[a]P-treated rats. Moreover, B[a]P-treated rats showed significant elevation in the circulatory concentrations of pro-inflammatory cytokines and oxidative stress indices in the brain, testes and sperm of B[a]P-treated rats. Light microscopy revealed severe necrosis of the Purkinje cells in the cerebellum, neuronal degeneration of the cerebral cortex, neuronal necrosis of the hippocampus and testicular atrophy in B[a]P-treated rats. Kolaviron co-treatment significantly ameliorated B[a]P mediated damages by suppressing pro-inflammatory mediators and enhancing the antioxidant status, neuroendocrine function, sperm characteristics and improving the architecture of the brain and testes in B[a]P-treated rats. The findings in the present investigation highlight that kolaviron may be developed to novel therapeutic agent against toxicity resulting from B[a]P exposure.
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Affiliation(s)
- Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Olatunde Owoeye
- Department of Anatomy, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Motunrayo A Aiyegbusi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Joshua O Dagunduro
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Yetunde M Daramola
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ebenezer O Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
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Huang P, Yang J, Ning J, Wang M, Song Q. Atrazine Triggers DNA Damage Response and Induces DNA Double-Strand Breaks in MCF-10A Cells. Int J Mol Sci 2015; 16:14353-68. [PMID: 26114388 PMCID: PMC4519846 DOI: 10.3390/ijms160714353] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 06/03/2015] [Accepted: 06/03/2015] [Indexed: 01/01/2023] Open
Abstract
Atrazine, a pre-emergent herbicide in the chloro-s-triazine family, has been widely used in crop lands and often detected in agriculture watersheds, which is considered as a potential threat to human health. Although atrazine and its metabolites showed an elevated incidence of mammary tumors in female Sprague–Dawley (SD) rats, no molecular evidence was found relevant to its carcinogenesis in humans. This study aims to determine whether atrazine could induce the expression of DNA damage response-related proteins in normal human breast epithelial cells (MCF-10A) and to examine the cytotoxicity of atrazine at a molecular level. Our results indicate that a short-term exposure of MCF-10A to an environmentally-detectable concentration of atrazine (0.1 µg/mL) significantly increased the expression of tumor necrosis factor receptor-1 (TNFR1) and phosphorylated Rad17 in the cells. Atrazine treatment increased H2AX phosphorylation (γH2AX) and the formation of γH2AX foci in the nuclei of MCF-10A cells. Atrazine also sequentially elevated DNA damage checkpoint proteins of ATM- and RAD3-related (ATR), ATRIP and phospho-Chk1, suggesting that atrazine could induce DNA double-strand breaks and trigger the DNA damage response ATR-Chk1 pathway in MCF-10A cells. Further investigations are needed to determine whether atrazine-triggered DNA double-strand breaks and DNA damage response ATR-Chk1 pathway occur in vivo.
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Affiliation(s)
- Peixin Huang
- Department of Agriculture & Environmental Sciences, Lincoln University of Missouri, Jefferson City, MO 65102, USA.
- Department of Pediatrics, Children's Mercy Hospitals and Clinics, University of Missouri Kansas City School of Medicine, Kansas City, MO 64108, USA.
| | - John Yang
- Department of Agriculture & Environmental Sciences, Lincoln University of Missouri, Jefferson City, MO 65102, USA.
| | - Jie Ning
- Department of Pathology and Anatomical Sciences, University of Missouri, Columbia, MO 65211, USA.
| | - Michael Wang
- Department of Pathology and Anatomical Sciences, University of Missouri, Columbia, MO 65211, USA.
| | - Qisheng Song
- Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA.
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Song XY, Li JN, Wu YP, Zhang B, Li BX. Atrazine Causes Autophagy- and Apoptosis-Related Neurodegenerative Effects in Dopaminergic Neurons in the Rat Nigrostriatal Dopaminergic System. Int J Mol Sci 2015; 16:13490-506. [PMID: 26075868 DOI: 10.3390/ijms160613490] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/30/2015] [Accepted: 06/02/2015] [Indexed: 01/24/2023] Open
Abstract
Atrazine (2-chloro-4-ethytlamino-6-isopropylamine-1,3,5-triazine; ATR) is widely used as a broad-spectrum herbicide. Animal studies have demonstrated that ATR exposure can cause cell death in dopaminergic neurons. The molecular mechanisms underlying ATR-induced neuronal cell death, however, are unknown. In this study, we investigated the autophagy and apoptosis induced by ATR in dopaminergic neurons in vivo. Wistar rats were administered with ATR at doses of 10, 50 and 100 mg/kg body weight by oral gavage for three months. In terms of histopathology, the expression of autophagy- and apoptosis-related genes as well as proteins related to the Beclin-1/B-cell lymphoma 2 (Bcl-2) autophagy and apoptosis pathways were examined in the rat nigrostriatal dopaminergic system. We observed degenerative micromorphology indicative of neuronal apoptosis and mitochondrial autophagy by electron microscopy in ATR-exposed rat striatum. The rat ventral mesencephalon in the ATR-exposed groups also showed increased expression of Beclin-1, LC3-II, Bax and Caspase-9, and decreased expression of tyrosine hydroxylase (TH), Bcl-xl and Bcl-2. These findings indicate that ATR may induce autophagy- and apoptosis-related changes in doparminergic neurons. Furthermore, this induction may be regulated by the Beclin-1 and Bcl-2 autophagy and apoptosis pathways, and this may help to better understand the mechanism underlying the neurotoxicity of ATR.
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Dey A, De JN. Neuroprotective therapeutics from botanicals and phytochemicals against Huntington's disease and related neurodegenerative disorders. J Herb Med 2015; 5:1-19. [DOI: 10.1016/j.hermed.2015.01.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abarikwu SO, Farombi EO. Atrazine induces apoptosis of SH-SY5Y human neuroblastoma cells via the regulation of Bax/Bcl-2 ratio and caspase-3-dependent pathway. Pestic Biochem Physiol 2015; 118:90-98. [PMID: 25752436 DOI: 10.1016/j.pestbp.2014.12.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 11/13/2014] [Accepted: 12/05/2014] [Indexed: 06/04/2023]
Abstract
Atrazine (ATZ) is a well known herbicide that is frequently detected in ground and surface water at significant levels. Our objective was to study the toxic effect of ATZ on the human neuroblastoma (SH-SY5Y) cells, and the degree of cytotoxicity and morphological changes were followed during the cell death. Application of cytotoxicity bioassays indicates that ATZ (5-50 µg/mL) decreases cell viability in a dose- and time-dependent manner. The evidence of apoptosis was confirmed by an increase in caspase-3 activity, and cell death was blocked when caspase-3 activity was inhibited. Typical apoptotic phenotype that includes nuclear fragmentation, micro nuclei formation, DNA fragmentation and increase in the expressions apoptosis-associated markers Bax, p53 and p21 and decreased expression of Bcl-2 were observed in treated cells. We also observed dose-dependent increase in reactive oxygen species (ROS) levels in ATZ-treated cells. These results suggest that ATZ-induces apoptosis and ROS levels in SH-SY5Y cells, and could be implicated in human neurodegenerative disorder.
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Affiliation(s)
- Sunny O Abarikwu
- Department of Biochemistry, University of Port Harcourt, Choba, Nigeria.
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Akinmoladun AC, Akinrinola BL, Olaleye MT, Farombi EO. Kolaviron, a Garcinia kola biflavonoid complex, protects against ischemia/reperfusion injury: pertinent mechanistic insights from biochemical and physical evaluations in rat brain. Neurochem Res 2015; 40:777-87. [PMID: 25638229 DOI: 10.1007/s11064-015-1527-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 01/21/2015] [Accepted: 01/24/2015] [Indexed: 01/09/2023]
Abstract
The pathophysiology of stroke is characterized by biochemical and physical alterations in the brain. Modulation of such aberrations by therapeutic agents affords insights into their mechanism of action. Incontrovertible evidences that oxidative stress is involved in the pathophysiology of neurologic disorders have brought antioxidative compounds, especially plant phytochemicals, under increasing focus as potential remedies for the prevention and management of neurodegenerative diseases. Kolaviron, a biflavonoid complex isolated from Garcinia kola Heckel (Guttiferae) was evaluated for neuroprotectivity in brains of male Wistar rats submitted to bilateral common carotid artery occlusion-induced global ischemia/reperfusion injury (I/R). Animals were divided into six groups: sham treated, vehicle (I/R), 50 mg/kg kolaviron + I/R, 100 mg/kg kolaviron + I/R, 200 mg/kg kolaviron + I/R and quercetin (20 mg/kg i.p.) + I/R. The common carotid arteries were occluded for 30 min followed by 2 h of reperfusion. Relative brain weight and brain water content were determined and oxidative stress and neurochemical markers were also evaluated. I/R caused significant decreases in glutathione level and the activities of enzymic antioxidants, the sodium pump and acetylcholinesterase while significant increases were recorded in relative brain weight, brain water content, lipid peroxidation and the activities of glutamine synthetase and myeloperoxidase. There was a remarkable ablation of I/R induced oxidative stress, neurochemical aberrations and brain edema in animals pretreated with kolaviron. The results suggested that the protection afforded by kolaviron probably involved regulation of redox and electrolyte homeostasis as well as anti-inflammatory and antiexcitotoxic mechanisms.
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Affiliation(s)
- Afolabi C Akinmoladun
- Department of Biochemistry, The Federal University of Technology, School of Sciences, Akure, Nigeria,
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Jiang C, Fu Y, Zhang L, Gong J, Wang Z, Xiao W, Zhang H, Guo Y. Synthesis and biological evaluation of novel marine-derived indole-based 1,2,4-oxadiazoles derivatives as multifunctional neuroprotective agents. Bioorg Med Chem Lett 2015; 25:216-20. [DOI: 10.1016/j.bmcl.2014.11.068] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 11/21/2014] [Accepted: 11/26/2014] [Indexed: 01/29/2023]
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Abarikwu SO. Anti-inflammatory effects of kolaviron modulate the expressions of inflammatory marker genes, inhibit transcription factors ERK1/2, p-JNK, NF-κB, and activate Akt expressions in the 93RS2 Sertoli cell lines. Mol Cell Biochem 2015; 401:197-208. [PMID: 25542212 DOI: 10.1007/s11010-014-2307-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 12/20/2014] [Indexed: 01/27/2023]
Abstract
The anti-inflammatory effects of kolaviron (Kol-v) have been demonstrated in several experimental models. The ability of Kol-v to modulate the expressions of inflammatory genes in lipopolysaccharide (LPS)-stimulated Sertoli cell line, 93RS2 was investigated in this study. Kol-v decreased the expressions of inflammatory genes TNF-α, Tlr-4, and Nfκb1 and has synergistic effect on LPS-induced COX-2 and iNOS expressions at high concentrations (25-100 μM). At lower concentrations (5-15 µM), the expressions of TNF-α, IL-6, and IL-1α were down-regulated by Kol-v except Tgfβ1 that was up-regulated. The LPS-induced decrease in the expression of the anti-inflammatory genes IL-3, IL-4, and IL-10 was blocked by Kol-v at all concentrations of Kol-v tested. The LPS-induced phosphorylations of mitogen-activated protein kinase family members (ERK1/2, and p-JNK), decreased IκBα expression, and decreased Akt phosphorylation was blocked by Kol-v. Our results highlight the potential for Kol-v at lower concentration to ameliorate cellular damage caused by local inflammation.
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Abarikwu SO, Akiri OF, Durojaiye MA, Alabi AF. Combined administration of curcumin and gallic acid inhibits gallic acid-induced suppression of steroidogenesis, sperm output, antioxidant defenses and inflammatory responsive genes. J Steroid Biochem Mol Biol 2014; 143:49-60. [PMID: 24565563 DOI: 10.1016/j.jsbmb.2014.02.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 01/24/2014] [Accepted: 02/13/2014] [Indexed: 11/16/2022]
Abstract
In this study, we investigated the effects of administration of gallic acid (Gal) with or without curcumin (Cur) on the sperm output, steroid level and antioxidant defenses in rat testis in vivo and the expression of inflammatory responsive genes in vitro. Male Wistar rats were divided randomly into four groups and given oral Gal (100mg/kg/day) and Cur (100mg/kg/day) alone or in combination for four weeks. The sperm quality was impaired following Gal treatment, while Cur prevented this and also improved the sperm count as well as the efficiency of sperm production (DSP/gm testis). The inhibitory effects of Gal on plasma testosterone level, glutathione levels, activities of glutathione peroxidase, catalase, superoxide dismutase and steroidogenic enzymes, 3β-hydroxysteroid dehydrogenase (3β-HSD) and 17β-HSD in the rat testis was blocked by Cur. Interestingly, the level of testosterone and the activities of the steroidogenic enzymes were significantly increased after treatment with Cur alone. Malondialdehyde concentration was unchanged following Gal treatment, while a significant decrease in malondialdehyde level was observed following treatment with Cur alone or in combination with Gal. We further analyzed the effects of Cur and Gal (25-100 μM) on the 93RS2 Sertoli cell-lines and observed that Cur blocked the Gal-induced suppression of inflammatory mediators such as TNF-α and IL-6, while Gal blocked the suppressive effect of Cur on IL-1α expression. Furthermore, the stimulatory or inhibitory effects of Gal on the expressions Tgf-β1 and CD-14 was concentration-dependent and could be blocked by Cur. When cultures of primary Sertoli cells were exposed to both Cur and Gal for 24h, p-JNK/SAPK expression remain stable, whereas Gal-induced p-p65 (NF-κB) expression and IκBα degradation was seen to be blocked by Cur but not Gal-induced expression of pERK1/2. Overall, Cur has stimulatory reproductive effects and could protect the testis from the toxic effects of Gal by mechanisms that could not be explained by its effects on the expressions of inflammatory cytokines but by its anti-oxidant properties.
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Affiliation(s)
- Sunny O Abarikwu
- Department of Chemical Sciences, Redeemer's University, Redemption Camp, Ogun State, Nigeria.
| | - Oghenetega F Akiri
- Department of Chemical Sciences, Redeemer's University, Redemption Camp, Ogun State, Nigeria
| | - Mojisola A Durojaiye
- Department of Chemical Sciences, Redeemer's University, Redemption Camp, Ogun State, Nigeria
| | - Adenike F Alabi
- Department of Chemical Sciences, Redeemer's University, Redemption Camp, Ogun State, Nigeria
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Owoeye O, Adedara IA, Bakare OS, Adeyemo OA, Egun C, Farombi EO. Kolaviron and vitamin E ameliorate hematotoxicity and oxidative stress in brains of prepubertal rats treated with an anticonvulsant phenytoin. Toxicol Mech Methods 2014; 24:353-61. [DOI: 10.3109/15376516.2014.913752] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abarikwu SO. Kolaviron, a natural flavonoid from the seeds of Garcinia kola, reduces LPS-induced inflammation in macrophages by combined inhibition of IL-6 secretion, and inflammatory transcription factors, ERK1/2, NF-κB, p38, Akt, p-c-JUN and JNK. Biochim Biophys Acta Gen Subj 2014; 1840:2373-81. [PMID: 24650887 DOI: 10.1016/j.bbagen.2014.03.006] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 02/22/2014] [Accepted: 03/06/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Kolaviron (Kol-v), an important component of Garcinia kola seed has a variety of biologic activities, including anti-inflammatory properties. METHODS We tested the ability of Kol-v to block signalling pathways implicated in lipopolysaccharide (LPS)-induced inflammatory gene expression in RAW 264.7 macrophage cell line. RESULTS When macrophages pre-treated with Kol-v (15 and 25μM) were activated with LPS, phosphorylation of p38 and p-c-JUN but not IκBα degradation and phosphorylation of NF-κB (p65), ERK1/2, and IκBα were blocked. Furthermore, Kol-v suppressed LPS-induced increase in the expression of IL-18 gene and LPS-induced decrease in the mRNA expression of IP-10 but it had no effect on the LPS-induced decrease in the gene expression levels of IL-1α, IL-33, IL-1β, and IFNβ1-1. When macrophages pre-treated with Kol-v (50 and 100μM) were activated with LPS, phosphorylation of Akt, ERK1/2, IκBα, and NFκB (p65) but not that of CREB was blocked by Kol-v. The protective effect of Kol-v on the LPS-induced phosphorylation of the mitogen activated protein kinase (MAPK) family member JNK was only observed at 100μM. At all concentrations of Kol-v (0-100μM) tested in this study, there was no effect of Kol-v on LPS-induced secretion of the pro-inflammatory cytokine TNF-α but a concentration dependent inhibition of Kol-v on IL-6 secretion was observed. CONCLUSION Kol-v interferes with LPS signalling by reducing the activation of several inflammatory transcription factors and that its inhibitory action on IL-6 secretion correlates with inhibition of ERK1/2, p38, Akt, p-c-JUN and JNK signalling pathways. GENERAL SIGNIFICANCE The anti-inflammatory potential of Kol-v via inhibition of IL-6 secretion in RAW macrophage was established in this study.
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Affiliation(s)
- Sunny O Abarikwu
- Department of Chemical Sciences, College of Natural Sciences, Redeemer's University, Redemption City, Ogun State, Nigeria.
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Jestadi DB, Phaniendra A, Babji U, Shanmuganathan B, Periyasamy L. Effects of Atrazine on Reproductive Health of Nondiabetic and Diabetic Male Rats. Int Sch Res Notices 2014; 2014:676013. [PMID: 27433493 DOI: 10.1155/2014/676013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/25/2014] [Accepted: 08/13/2014] [Indexed: 12/19/2022]
Abstract
The aim of the present study was to investigate the effects of low dose of atrazine on reproductive system of male Wistar rats. 16 rats were divided into four groups of four animals each. Group I (nondiabetic) and group III (diabetic) animals served as controls that received safflower oil (300 μL/kg bw/day), respectively. Group II (nondiabetic) and group IV (diabetic) animals received atrazine (300 μg/kg bw/day). Nonsignificant decrease in the activities of antioxidant and steroidogenic enzymes and sperm parameters suggests that atrazine did not produce any effect on reproductive system of rats. Histological findings also revealed that atrazine at a dose of 300 μg/kg bw did not produce any testicular toxic effects in nondiabetic and diabetic atrazine treated rats. Low dose of atrazine did not show reproductive toxicity in rats. To know the effects of atrazine in diabetic rats further studies have to be carried out with increased concentration of atrazine.
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Jeong EJ, Hwang L, Lee M, Lee KY, Ahn MJ, Sung SH. Neuroprotective biflavonoids of Chamaecyparis obtusa leaves against glutamate-induced oxidative stress in HT22 hippocampal cells. Food Chem Toxicol 2013; 64:397-402. [PMID: 24315869 DOI: 10.1016/j.fct.2013.12.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 12/02/2013] [Accepted: 12/03/2013] [Indexed: 10/25/2022]
Abstract
Four biflavonoids (1-4), five flavonoids glycosides (5-9), two catechins (10, 11), two lignans (12-13), neolignan glycoside (14) and phenylpropanoid glycoside (15) were isolated from the leaves of Chamaecyparis obtusa (Cupressaceae). Neuroprotective effects of the isolated compounds were evaluated employing HT22 mouse hippocampal cells, a model system to study glutamate-induced oxidative stress. The glutamate injured HT22 cells were protected significantly by amentoflavone (3), ginkgetin (4) and (-)-epitaxifolin 3-O-β-D-xylopyranoside (9). The reduced activities of antioxidant enzymes, superoxide dismutase (SOD), glutathione reductase (GR) in response to high concentration of glutamate were preserved by pre-treatment of 3, 4 or 9, while the activities of glutathione peroxidase (Gpx) and catalase (CAT) were little affected. The reduced content of GSH induced by glutamate was also recovered by 3, 4 or 9 in accommodation with the decrease in ROS production. In addition, the phosphorylation of ERK1/2 induced by glutamate insult was clearly prevented by 3, while little changed by 4. Taken together, amentoflavone (3), ginkgetin (4) and (-)-epitaxifolin 3-O-β-D-xylopyranoside (9) derived from C. obtusa could protect HT22 neuronal cells against glutamate-induced oxidative damage through preserving antioxidant enzymes activities and/or inhibiting ERK1/2 activation.
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Affiliation(s)
- Eun Ju Jeong
- Department of Agronomy & Medicinal Plant Resources, College of Life Sciences and Natural Resources, Gyeongnam National University of Science and Technology, Jinju 660-758, Republic of Korea
| | - Lim Hwang
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul 151-742, Republic of Korea
| | - Mina Lee
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul 151-742, Republic of Korea
| | - Ki Yong Lee
- College of Pharmacy, Korea University, Sejong 339-700, Republic of Korea
| | - Mi-Jeong Ahn
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 660-751, Republic of Korea
| | - Sang Hyun Sung
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul 151-742, Republic of Korea.
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Adedara IA, Mathur PP, Farombi EO. Kolaviron prevents ethylene glycol monoethyl ether-induced testicular apoptosis via down-regulation of stress proteins, Fas/Fas-L and caspases expressions in rats. Toxicol Mech Methods 2013; 23:689-96. [DOI: 10.3109/15376516.2013.843107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Lin Z, Dodd CA, Filipov NM. Differentiation state-dependent effects of in vitro exposure to atrazine or its metabolite diaminochlorotriazine in a dopaminergic cell line. Life Sci 2012; 92:81-90. [PMID: 23142650 DOI: 10.1016/j.lfs.2012.10.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 10/19/2012] [Accepted: 10/30/2012] [Indexed: 10/27/2022]
Abstract
AIMS This study sought to determine the impact of in vitro exposure to the herbicide atrazine (ATR) or its major mammalian metabolite diaminochlorotriazine (DACT) on dopaminergic cell differentiation. MAIN METHODS N27 dopaminergic cells were exposed for 24 or 48 h to ATR or DACT (12-300 μM) and their effects on cell viability, ATP levels, ADP:ATP ratio and differentiation markers, such as soma size and neurite outgrowth, were assessed. KEY FINDINGS Overall, intracellular ATP levels and soma size (decreased by ATR at ≥12 μM; 48 h) were the two parameters most sensitive to ATR exposure in undifferentiated and differentiating dopaminergic cells, respectively. At the morphological level, ATR, but not DACT, increased the percentage of morphologically abnormal undifferentiated N27 cells. On the other hand, exposure to DACT (300 μM; 48 h), but not ATR, increased the ADP:ATP ratio regardless of the differentiation state and it moderately disrupted thin neurite outgrowth. Only the highest concentration of ATR or DACT (300 μM) was cytotoxic after a longer exposure (48 h) and undifferentiated N27 cells were the least sensitive to the cytotoxic effects of ATR or DACT. SIGNIFICANCE Our results suggest that the energy perturbation and morphological disruption of dopaminergic neuronal differentiation induced by ATR and, to a lesser extent, DACT, may be associated with reported neurological deficits caused by developmental ATR exposure in rodents.
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Affiliation(s)
- Zhoumeng Lin
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
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Abarikwu SO, Pant AB, Farombi EO. Dietary Antioxidant, Quercetin, Protects Sertoli-Germ Cell Coculture from Atrazine-Induced Oxidative Damage. J Biochem Mol Toxicol 2012; 26:477-85. [DOI: 10.1002/jbt.21449] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 08/21/2012] [Accepted: 09/16/2012] [Indexed: 11/12/2022]
Affiliation(s)
- Sunny O. Abarikwu
- Department of Chemical Sciences; College of Natural Sciences; Redeemer's University; Redemption City; Ogun State; Nigeria
| | - Aditya B. Pant
- Indian Institute of Toxicology Research (Formerly Industrial Toxicology Research Centre); Lucknow; India
| | - Ebenezer O. Farombi
- Drug Metabolism and Toxicology Research Laboratories; Department of Biochemistry; University of Ibadan; Ibadan; Oyo State; Nigeria
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Abarikwu SO, Pant AB, Farombi EO. Quercetin decreases steroidogenic enzyme activity, NF-κB expression, and oxidative stress in cultured Leydig cells exposed to atrazine. Mol Cell Biochem 2013; 373:19-28. [DOI: 10.1007/s11010-012-1471-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 09/26/2012] [Indexed: 12/06/2022]
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Abarikwu SO, Farombi EO, Pant AB. Kolaviron Biflavanoids of Garcinia Kola Seeds Protect Atrazine-Induced Cytotoxicity in Primary Cultures of Rat Leydig Cells. Int J Toxicol 2012; 31:407-15. [DOI: 10.1177/1091581812445476] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We sought to explore the mechanism by which kolaviron (Kol) protects against atrazine (ATZ)-induced toxicity of cultured interstitial Leydig cells (ILCs). In our experiments, treatment with Kol improved Leydig cell viability and significantly reduced malondialdehyde (MDA) and reactive oxygen species (ROS) levels. Further investigations revealed a reduction in glutathione peroxidase (GSH-Px), glutathione reductase (GR), glutathione-S-transferase (GST) and elevation of superoxide dismutase 1 (SOD-1) and superoxide dismutase 2 (SOD-2) as measured by messenger RNA (mRNA) expression. Additionally, the ATZ-induced alterations in the mRNA transcript copy numbers of steroidogenesis genes: steroidogenic acute regulatory protein (StAR), cytochrome P450 side-chain cleavage enzyme (CYP11A1), and 3β-hydroxysteroid dehydrogenase (3β-HSD) were shifted toward the control values by Kol. Taken together, these findings indicate that Kol protects ILCs from ATZ-induced toxicity via the reduction in ROS and MDA levels and induce normalization of mRNA levels of all the tested genes.
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Affiliation(s)
- Sunny O. Abarikwu
- Department of Chemical Sciences, College of Natural Sciences, Redeemer’s University, Redemption City, Ogun State, Nigeria
| | - Ebenezer O. Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Aditya B. Pant
- In Vitro Toxicology Laboratories, Indian Institute of Toxicology Research (Council of Scientific & Industrial Research) Lucknow, Uttar Pradesh, India
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Abarikwu SO, Pant AB, Farombi EO. 4-Hydroxynonenal induces mitochondrial-mediated apoptosis and oxidative stress in SH-SY5Y human neuronal cells. Basic Clin Pharmacol Toxicol 2011; 110:441-8. [PMID: 22118713 DOI: 10.1111/j.1742-7843.2011.00834.x] [Citation(s) in RCA: 224] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Excessive and sustained increases in oxidative stress and apoptosis have been implicated in the pathogenesis of many diseases. In this study, we demonstrated that 4-hydroxynonenal (4-HNE), a product of lipid peroxidation in a range of concentration (0.1-50 μM) showed cytotoxic effects on SH-SY5Y cell culture at a concentration >5 μM at 4 hr of exposure. 4-HNE dose dependently decreased cell viability and significantly promoted reactive oxygen species formation and enhanced oxidative stress as reflected in the increased level of lipid peroxidation and catalase activity and decreased glutathione peroxidase activity as well as glutathione levels. 4-HNE-induced oxidative stress was associated with increased transcriptional and translational expressions of Bax and p53 in SH-SY5Y cells. Mitochondrial-mediated apoptosis was confirmed by increased expression and activity of caspase-3. Our data demonstrate that 4-HNE induces neuronal cell death through abnormal expression of apoptotic markers (p53, Bax and caspase-3). Oxidative stress may be involved in the initial priming of SH-SY5Y cells to 4-HNE-induced cytotoxicity in vitro.
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Affiliation(s)
- Sunny O Abarikwu
- Department of Chemical Sciences, College of Natural Sciences, Redeemer's University, Redemption City, Ogun State, Nigeria.
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