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Van PCP, Ngo Van H, Quang MB, Duong Thanh N, Nguyen Van D, Thanh TD, Tran Minh N, Thi Thu HN, Quang TN, Thao Do T, Thanh LP, Do Thi Thu H, Le Tuan AH. Stigmastane-type steroid saponins from the leaves of Vernonia amygdalina and their α-glucosidase and xanthine oxidase inhibitory activities. Nat Prod Res 2024; 38:601-606. [PMID: 36924396 DOI: 10.1080/14786419.2023.2188589] [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: 11/03/2022] [Accepted: 03/02/2023] [Indexed: 03/18/2023]
Abstract
Two new vernonioside K (1) and vernonioside L (2) and four known Δ7,9(11) stigmastane-type steroidal saponins-vernonioside B2 (3), vernoniacum B (4), vernonioside B1 (5), and vernoamyoside A (6)-were isolated from the leaves of Vernonia amygdalina. Their structures were determined by comprehensive spectroscopic analysis with one-dimensional nuclear magnetic resonance, two-dimensional nuclear magnetic resonance, and high-resolution mass spectrometry. All isolated compounds (1-6) were evaluated to determine their inhibitory effects on α-glucosidase and xanthine oxidase. Among them, two new compounds 1 and 2 showed significant inhibition of α-glucosidase with IC50 values of 78.56 ± 7.28 and 14.74 ± 1.57 (μM), respectively, comparable with acarbose as a positive control (127.53 ± 1.73 μM); none of these compounds inhibited xanthine oxidase activity. Compounds 1 and 2 are promising candidates for the development of antidiabetic agents from natural sources.
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Affiliation(s)
- PCong Pham Van
- Vietnam Academy of Science and Technology (VAST), Graduate University of Science and Technology, Hanoi, Vietnam
- Center for Research and Technology Transfer, VAST, Hanoi, Vietnam
| | - Hieu Ngo Van
- Vietnam Academy of Science and Technology (VAST), Graduate University of Science and Technology, Hanoi, Vietnam
- Center for Research and Technology Transfer, VAST, Hanoi, Vietnam
| | - Minh Bui Quang
- Center for Research and Technology Transfer, VAST, Hanoi, Vietnam
| | - Nam Duong Thanh
- Center for Research and Technology Transfer, VAST, Hanoi, Vietnam
| | - Dan Nguyen Van
- Center for Research and Technology Transfer, VAST, Hanoi, Vietnam
| | - Tuan Do Thanh
- Thai Binh University of Medicine and Pharmacy, Thai Binh City, Thai Binh, Vietnam
| | - Ngoc Tran Minh
- Traditional medicinal administration, Ministry of Health, Ba Dinh, Hanoi, Vietnam
| | | | | | - Thi Thao Do
- Institute of Biotechnology, VAST, Cau Giay, Hanoi, Vietnam
| | | | - Hien Do Thi Thu
- Vietnam Academy of Science and Technology (VAST), Graduate University of Science and Technology, Hanoi, Vietnam
- Center for Research and Technology Transfer, VAST, Hanoi, Vietnam
| | - Anh Hoang Le Tuan
- Vietnam Academy of Science and Technology (VAST), Graduate University of Science and Technology, Hanoi, Vietnam
- Center for Research and Technology Transfer, VAST, Hanoi, Vietnam
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Abiola T, John EO, Sossou IT, Charles Callistus B. Immune boosting and ameliorative properties of aqueous extract of Vernonia amygdalina Delile against MSG-induced genotoxicity: An in silico and in vivo approach. Heliyon 2024; 10:e23226. [PMID: 38163244 PMCID: PMC10755317 DOI: 10.1016/j.heliyon.2023.e23226] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 11/28/2023] [Accepted: 11/29/2023] [Indexed: 01/03/2024] Open
Abstract
Vernonia amygdalina (VA) is popularly consumed as food and as medicine due to its nutritional and bioactive constituents. This study assessed the anti-genotoxic effect of aqueous leaf extract of VA against monosodium (MSG) -induced genotoxicity. Crude extraction and phytochemical analysis were done using standard methods. In silico studies was done using compounds in the extract against Bcl-2, NF-kB 50, DNA polymerase lambda, DNA ligase, superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX). Twelve rats were divided into three groups with four rats in each group. Group I was fed on food and water, group II received MSG (4 g/kg) per body weight (pbw) intraperitoneally, group III received MSG (4 g/kg) pbw intraperitoneally followed by oral dose of VA leaf extract (250 mg/kg) per body weight. The number of the micronucleated red blood cells and white blood cells were determined from blood smears microscopically. Results showed that aqueous extract of VA contained in mg/100 g alkaloids (7.04 ± 0.16), saponins (3.91 ± 0.13), flavonoid (1.64 ± 0.16), phenol (3.40 ± 0.12) and tannins (0.07 ± 0.32). In silico studies revealed high binding interaction (ΔG > -8.6) of vernoniosides D and E with all the tested proteins. There was a reduction in the number of micronucleated cells, neutrophils and eosinophils of the treated group compared to the MSG group, while there was an increase in the lymphocyte count. The anti-genotoxic effects of VA leaf extract might be attributed to the synergistic interaction of the various bioactive components in the extract. VA could be a potential plant for the prevention of cancer and other diseases that attenuate the immune system.
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Affiliation(s)
- Temitope Abiola
- Department of Biochemistry, Faculty of Basic Medical Sciences, Redeemer's University, Ede, Osun State, Nigeria
| | - Emmanuel O. John
- Department of Chemical Sciences, Biochemistry Unit, College of Natural and Applied Sciences, Oduduwa University, Ipetumodu, Ile-Ife, Osun State, Nigeria
| | - Ibukun Temitope Sossou
- Department of Medical Laboratory Sciences, Faculty of Basic Medical Sciences, Redeemer's University, Ede, Osun State, Nigeria
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Hasibuan PAZ, Keliat JM, Lubis MF, Nasution A. The ethyl acetate extract of Vernonia amygdalina leaf ameliorates gemcitabine effect against migration and invasion of PANC-1 cells via down-regulation the VEGF, COX 2, and RAS/MEK pathways. Saudi Pharm J 2024; 32:101872. [PMID: 38111670 PMCID: PMC10727942 DOI: 10.1016/j.jsps.2023.101872] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/12/2023] [Indexed: 12/20/2023] Open
Abstract
Individuals diagnosed with cancer often turn to the use of herbal remedies with the intention of treating and ameliorating the condition, impeding the progression of metastasis, enhancing immune function, mitigating stress, and inducing relaxation. Recently, medicinal plants were combined with conventional chemotherapy to decrease the side effects and increase the effectiveness of chemotherapy. This study showed the effectiveness of gemcitabine (Gem) was significantly increased after being used together with ethyl acetate extract obtained from Vernonia amygdalina (Eav) leaves. The combination doses of Eav and Gem were determined based on cytotoxic activity using the MTT assay method. The anticancer effect of this combination was identified by several parameters including the apoptosis effect, anti-migration, and anti-invasion activities of PANC-1 cells. Furthermore, this effect was explained via protein expression evaluation using immunohistochemical and flow cytometry. The Eav has a better Inhibitory Concentration 50 (IC50) than Gem of 21.19 ± 0.64 µg/mL and 164.78 ± 1.40 µg/mL. The combination of Eav and Gem at IC50 (1:1) has the strongest activity than Eav and Gem alone at 500.00 µg/mL. The anti-cancer effect of this combination showed significantly increased levels of apoptosis, particularly in the early phase of 17.46 ± 0.35 % (p < 0.0001) than Eav and Gem alone of 7.76 ± 0.25 % and 7.06 ± 0.20 %. A similar impact was evaluated in the migration and invasion of PANC-1 cells after the combination treatment. The % relative migration and cell invasion were significantly decreased compared to the control group and Eav or Gem alone by 21.49 ± 0.96 % and 125.25 ± 5.25 cells, respectively (p < 0.0001). This study found that signature molecules of VEGF, COX2, RAS, and MEK were down-regulated after treatment. Our study suggested that the Eav ameliorates the Gem effect against PANC-1 cells through apoptosis, migration, and invasion influence via RAS/MEK pathways.
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Affiliation(s)
| | - Jane Melita Keliat
- Department of Pharmaceutical and Food Analysis, Faculty of Vocational, Universitas Sumatera Utara, Indonesia
| | - Muhammad Fauzan Lubis
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Sumatera Utara, Indonesia
| | - Annisa Nasution
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Indonesia
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Tesfaye M, Gonfa Y, Tadesse G, Temesgen T, Periyasamy S. Green synthesis of silver nanoparticles using Vernonia amygdalina plant extract and its antimicrobial activities. Heliyon 2023; 9:e17356. [PMID: 37383214 PMCID: PMC10293723 DOI: 10.1016/j.heliyon.2023.e17356] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 03/25/2023] [Revised: 06/14/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023] Open
Abstract
The green nanoparticles synthesis method from leaves extract revealed full an economical, sustainable and eco-friendly method. In this study, the leaf extract of Vernonia amygdalina was as a reducing and capping agent for the synthesis of silver nanoparticles (AgNPs). M/DW binary solvent was selected for its relatively better extraction performance than methanol, ethanol, distilled water and ethanol/distilled water. Furthermore, the effect of solvent ratio of M/DW, precursor concentration, ratio of silver nitrate (AgNO3) to plant extract, temperature, time and pH on the synthesis of AgNPs was carried out. Greenly synthesized Agents was confirmed using UV-Vis spectroscopy and characterized by XRD and FT-IR. Besides, its antimicrobial activities were also evaluated using agar diffusion techniques. The UV-Vis spectra showed specific Surface Plasmon Resonance (SPR) absorption peaks between 411 nm and 430 nm which revealed the formation of AgNPs during the synthesis. The nanoparticle synthesis was further confirmed by XRD analysis. Phytochemical screening test and FT-IR analysis of V. amygdalina leaves extract revealed the existence of phenolic, Tannin, saponins and flavonoid groups, which capped the nanoparticles during the synthesis. The antibacterial activities of the synthesized AgNPs were evaluated against Gram-positive bacteria (S. pyogenes and S. aureus) and Gram-negative bacteria (E. coli and P. aeruginosa) and higher inhibition zones were observed.
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Konmy B, Olounladé PA, Adjobimey T, Dansou CC, Adoho ACC, Tchetan E, Alowanou GG, Azando EVB, Adjanohoun A, Doko Allou SY, Baba-Moussa L. In vivo anticoccidial activity and immune response of Moringa oleifera and Vernonia amygdalina leaves against Eimeria magna and Eimeria media in rabbits. Front Cell Infect Microbiol 2023; 13:1173138. [PMID: 37274317 PMCID: PMC10232876 DOI: 10.3389/fcimb.2023.1173138] [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: 02/24/2023] [Accepted: 04/26/2023] [Indexed: 06/06/2023] Open
Abstract
Introduction The aims of this study were to determine the immune response and the anticoccidial activity induced by Moringa oleifera and Vernonia amygdalina leaves in rabbits infected with Eimeria magna and Eimeria media. Methods Thirty-five-day-old rabbits, free from coccidia, were infested with 2.103 oocysts of Eimeria magna and Eimeria media, then received the acetone extract of the leaves of Moringa oleifera and Vernonia amygdalina at different doses by oral gavage. Results and discussion The inhibition of the excretion of oocysts was evaluated by the McMaster technique and the levels of cytokines (IL-4 and IL-12) and immunoglobulin IgG were assayed by the ELISA method. The in vivo efficacy on E. magna and E. media oocysts was 95.43% and 96.53% for Moringa oleifera and Vernonia amygdalina at 1000 mg/kg bw against 98% for the positive control. Interestingly the plant extracts increased the production of interleukin (IL) and immunoglobulins (Ig) compared to controls. Plasma IL-4 levels (pg/ml) in rabbits were 128.94 and 131.38; those of IL-12 (pg/ml) were 395.55 and 426.56, and then for those of IgG (μg/ml) were 14.70 and 13.94 respectively with the acetone extracts of Moringa oleifera and Vernonia amygdalina on D14 PT at 1000 mg/kg bw. This study indicates that Moringa oleifera and Vernonia amygdalina can be used as an alternative to synthetic anticoccidials. These plants could be used to increase the resistance of the immune system of rabbits to infestations of Eimeria species in rabbit farms.
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Affiliation(s)
- Basile Konmy
- Zootechnical Research and Livestock System Unit, School of Management and Operation of Livestock Systems, National University of Agriculture, Porto-Novo, Benin
- Laboratory of Biology and Molecular Typing in Microbiology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Abomey-Calavi, Benin
- Laboratory of Ethnopharmacology and Animal Health, Faculty of Agronomic Sciences, University of Abomey-Calavi, Cotonou, Benin
| | - Pascal Abiodoun Olounladé
- Zootechnical Research and Livestock System Unit, School of Management and Operation of Livestock Systems, National University of Agriculture, Porto-Novo, Benin
- Laboratory of Ethnopharmacology and Animal Health, Faculty of Agronomic Sciences, University of Abomey-Calavi, Cotonou, Benin
| | - Tomabu Adjobimey
- Unité de Biochimie et de Biologie Moléculaire, Faculté des Sciences et Techniques, Université d’Abomey-Calavi, Abomey-Calavi, Benin
| | - Christian Cocou Dansou
- Zootechnical Research and Livestock System Unit, School of Management and Operation of Livestock Systems, National University of Agriculture, Porto-Novo, Benin
| | - Akouavi Carine Chimène Adoho
- Zootechnical Research and Livestock System Unit, School of Management and Operation of Livestock Systems, National University of Agriculture, Porto-Novo, Benin
| | - Esaïe Tchetan
- Zootechnical Research and Livestock System Unit, School of Management and Operation of Livestock Systems, National University of Agriculture, Porto-Novo, Benin
- Laboratory of Ethnopharmacology and Animal Health, Faculty of Agronomic Sciences, University of Abomey-Calavi, Cotonou, Benin
| | - Georcelin Goué Alowanou
- Laboratory of Ethnopharmacology and Animal Health, Faculty of Agronomic Sciences, University of Abomey-Calavi, Cotonou, Benin
| | | | - Adolphe Adjanohoun
- Laboratory of Biology and Molecular Typing in Microbiology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Abomey-Calavi, Benin
| | - Sanni-yo Doko Allou
- Zootechnical Research and Livestock System Unit, School of Management and Operation of Livestock Systems, National University of Agriculture, Porto-Novo, Benin
| | - Lamine Baba-Moussa
- Laboratory of Biology and Molecular Typing in Microbiology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Abomey-Calavi, Benin
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Wang ZH, Zhao XJ, Chen X, Fei WT, Wang C, Zhang JJ, Wang LY. [Properties of new exotic traditional Chinese medicinal Vernonia amygdalina leaves:a literature research]. Zhongguo Zhong Yao Za Zhi 2023; 48:2265-2271. [PMID: 37282915 DOI: 10.19540/j.cnki.cjcmm.20221116.401] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The leaves of Vernonia amygdalina Delile of the family Asteraceae(also known as "bitter leaf"), rich in biological activities, are used as both medicine and food for a long time in West tropical Africa. They have been introduced into Southeast Asia and Fujian and Guangdong provinces of China in recent years. However, little is known about the properties of the plant in traditional Chinese medicine(TCM), which limits its combination with other Chinese medicinal herbs. In this study, 473 articles on V. amygdalina leaves were selected from PubMed, Web of Science, CNKI, Wanfang Data and VIP to summarize their components, pharmacological effects and clinical research. V. amygdalina leaves presented anti-microbial, hypoglycemic, anti-hypertensive, lipid-lowering, anti-tumor, anti-inflammatory, antioxidant, and other pharmacological effects. On the basis of the theory of TCM properties, the leaves were inferred to be cold in property and bitter and sweet in flavor, acting on spleen, liver, stomach and large intestine and with the functions of clearing heat, drying dampness, purging fire, removing toxin, killing insects and preventing attack of malaria. They can be used to treat dampness-heat diarrhea, interior heat and diabetes, malaria, insect accumulation and eczema(5-10 g dry leaves by decoction per day and an appropriate amount of crushed fresh leaves applying to the affected area for external use). Due to the lack of TCM properties, V. amygdalina leaves are rarely used medicinally in China. The determination of medicinal properties of the leaves is conducive to the introduction of new exotic medicinal herbs and the development of new TCM resources, which facilitated further clinical application and research and development of Chinese medicinal herbs.
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Affiliation(s)
- Zi-Heng Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine Beijing 102488, China
| | - Xiao-Jun Zhao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine Beijing 102488, China
| | - Xun Chen
- School of Chinese Materia Medica, Beijing University of Chinese Medicine Beijing 102488, China
| | - Wen-Ting Fei
- School of Chinese Materia Medica, Beijing University of Chinese Medicine Beijing 102488, China
| | - Chun Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine Beijing 102488, China
| | - Jian-Jun Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine Beijing 102488, China
| | - Lin-Yuan Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine Beijing 102488, China
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Aderibigbe SA, Idowu SO, Olaniyi AA. Isotonic, aqueous-based media as simple and suitable test media for short-term Haemonchus placei adult worm motility assay. Exp Parasitol 2023; 249:108516. [PMID: 36967034 DOI: 10.1016/j.exppara.2023.108516] [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] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 03/21/2023] [Accepted: 03/21/2023] [Indexed: 04/08/2023]
Abstract
The solvating power of test media used in anthelmintic assays is critical to the validity of assay results, especially when evaluating plant extracts. High solutes in media lowers its solvating power, altering the range of concentrations available for investigation and assay performance. To identify simplified, well-tolerated media for adult Haemonchus placei with improved solvating power, we investigated the impact of varying solutions of pH (2.5-8.5), salinity (19-154 mM), and normal saline (NS) incorporating dissolution enhancers (acetone, propylene glycol, DMSO and Tween-80; 10-40% v/v) on the nematode over 3 h at room temperature. The performance of identified media, NS and 20% Tween-80 in NS, were evaluated by preparing sample extracts (acetone extract Sarcocephalus latifolius, AESL20&10; and chloroform extract Vernonia amygdalina, CEVA20&10) stock solutions (20 and 10 mg/mL) in them, assessed their apparent dissolution, and each highest stock solution that dissolves the extracts evaluated for anthelmintic activity against H. placei. We found isotonicity to be the critical-to-worm survival factor as H. placei survived 100% in pH solutions 3.5-8.5, and saline solutions 39-154 mM. The dissolution enhancers, at 40%, gave no survival. At 30% and 20%, only Tween-80 gave 92.5% and 100% survival, respectively. At 10%, Tween-80, acetone, DMSO and propylene glycol gave 100%, 100%, 87.5% and 0% survival, respectively. In 20% Tween-80 in NS, AESL20&10 and CEVA20&10 dissolved, furnishing wider concentration range (20-0 mg/mL); whereas only AESL10 dissolved in NS (narrower concentration range, 10-0 mg/mL). The LC50s (mg/mL) of 7.67 (AESL10, NS) and 7.48 (AESL20, Tween-80 in NS) were not significantly different (p > 0.05), while CEVA20 (Tween-80 in NS) gave 2.67. Our findings show that NS and 20% Tween-80 in NS, as isotonic, aqueous-based media, are suitable, and well-tolerated as test media for adult H. placei in a short-term motility assay. Up to 30% Tween-80 could be used to enhance dissolution where necessary.
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Affiliation(s)
- Segun A Aderibigbe
- Department of Pharmaceutical Chemistry, University of Ibadan, Ibadan, Nigeria.
| | - Sunday O Idowu
- Department of Pharmaceutical Chemistry, University of Ibadan, Ibadan, Nigeria.
| | - Ajibola A Olaniyi
- Department of Pharmaceutical Chemistry, University of Ibadan, Ibadan, Nigeria
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Nguemfo Tchankugni A, Mbida M, Hescheler J, Nguemo F. Effect of Ethanolic Extract of Vernonia amygdalina on the Proliferation, Viability and Function of Mouse Induced Pluripotent Stem Cells and Cardiomyocytes. Plants (Basel) 2023; 12:1108. [PMID: 36903967 PMCID: PMC10005699 DOI: 10.3390/plants12051108] [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] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/03/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Vernonia amygdalina (V. amygdalina) leaves are commonly used in traditional medicine around the world for the treatment of a plethora disorders, including heart disease. The aim of this study was to examine and evaluate the cardiac effect of V. amygdalina leaf extracts using mouse induced pluripotent stem cells (miPSCs) and their cardiomyocytes' (CMs) derivatives. We used a well-established stem cell culture to assess the effect of V. amygdalina extract on miPSC proliferation, EB formation and the beating activity of miPS cell-derived CMs. To study the cytotoxic effect of our extract, undifferentiating miPSCs were exposed to different concentrations of V. amygdalina. Cell colony formation and EB morphology were assessed using microscopy, whereas the cell viability was accessed with an impedance-based method and immunocytochemistry following treatment with different concentrations of V. amygdalina. Ethanolic extract of V. amygdalina induced toxicity in miPSCs, as revealed by a decrease in cell proliferation and colony formation, and an increase in cell death at a concentration of ≥20 mg/mL. At a concentration of 10 mg/mL, the rate of beating EBs was observed with no significant difference regarding the yield of cardiac cells. In addition, V. amygdalina did not affect the sarcomeric organization, but induced positive or negative effects on miPS cell-derived CMs' differentiation in a concentration-dependent manner. Taken together, our findings demonstrate that the ethanolic extract of V. amygdalina affected cell proliferation, colony forming and cardiac beating capacities in a concentration-dependent manner.
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Affiliation(s)
- Arlette Nguemfo Tchankugni
- Research Unit of Biology and Applied Ecology, Department of Animal Biology, Faculty of Science, University of Dschang, Dschang P.O. Box 067, Cameroon
| | - Mpoame Mbida
- Research Unit of Biology and Applied Ecology, Department of Animal Biology, Faculty of Science, University of Dschang, Dschang P.O. Box 067, Cameroon
| | - Jürgen Hescheler
- Center for Physiology and Pathophysiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Filomain Nguemo
- Center for Physiology and Pathophysiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
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Liu X, Yang R, Xu Q, Zhou M, Feng J, Wang G, Lin T, Tian W, Chen H. Tautomeric phytosterols from Vernonia amygdalina Delile and their anti-cervical cancer activity. Bioorg Chem 2022; 128:106068. [PMID: 35933896 DOI: 10.1016/j.bioorg.2022.106068] [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] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/02/2022]
Abstract
Vernonia amygdalina Delile is generally used as green vegetables for cuisine in Nigeria and health tea or products in southeast of china. It was also used as folk medicine for the treatment of anti-helminth, febrifuge, digestive tonic and wounds. In this study, eleven undescribed phytosterols (1-2, 4-12) and six known analogues (3, 13-17) were isolated from the stems of V. amygdalina. Their structures including absolute configurations were elucidated by comprehensive spectroscopic methods (1D and 2D NMR, HRESIMS), X-ray diffraction and comparison of their ECD spectra. Besides, the tautomerism of phytosterols (1, 3-6, 12-17) with hemiacetal moiety were analyzed by solution NMR with different deuterated solvent and variable-temperature experiments. In addition, the cytotoxic activities of isolates against HeLa cells were evaluated. As a result, compound 10 exhibited the most potent anti-cervical cancer activity with the IC50 of 22.44 μM. Mechanism studies indicated that 10 triggered HeLa cells apoptosis through activating caspase signaling pathway. Furthermore, 10 could arrest the cell cycle in S phase and suppress the activation of the PI3K/AKT/mTOR pathway, leading to the inhibition of HeLa cells proliferation.
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Affiliation(s)
- Xiangzhong Liu
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China
| | - Renjing Yang
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China
| | - Qiannan Xu
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China
| | - Mi Zhou
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China
| | - Jie Feng
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China
| | - Guanghui Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China
| | - Ting Lin
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China.
| | - Wenjing Tian
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China.
| | - Haifeng Chen
- Fujian Provincial Key Laboratory of Innovative Drug Target, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, PR China.
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Nkono BLNY, Rouamba A, Duceac IA, Verestiuc L. Antihyperglycemic effect of Vernonia amygdalina and in vitro evaluation of its antiproliferative activity on human osteosarcoma MG-63. Pan Afr Med J 2022; 42:222. [PMID: 36845227 PMCID: PMC9949303 DOI: 10.11604/pamj.2022.42.222.33149] [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: 01/07/2022] [Accepted: 07/10/2022] [Indexed: 11/11/2022] Open
Abstract
Introduction the leaves of Vernonia amygdalina (V. amygdalina) are consumed as food in sub-Saharan Africa (SSA). In traditional medicine, this plant is widely used in the treatment of cancer and diabetes mellitus. In the present study, we evaluated the antihyperglycemic and the antiproliferative activities of the hydroalcoholic extract of V. amygdalina leaves (HAEVa). Methods we conducted an experimental descriptive and analytical study with a prospective data collection from May 2019 to July 2020. For the in vivo study, the experiments were carried out on albino male rats of Wistar strain (Rattus norvegicus). Antihyperglycemic activity was performed in vivo in dexamethasone-induced insulin-resistant rats using the oral glucose tolerance test (OGTT). The biocompatibility and the antiproliferative activity of extract were performed in vitro respectively on rabbit primary dermal fibroblasts (RPDF) and human osteosarcoma MG-63 cells using the 3-(4,5-dimethylthiazol-2yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The data were analyzed with the GraphPad Prism software version 5.0.3. The statistical analyses were obtained by the analysis of variance (ANOVA), followed by Bonferroni´s post-test. P<0.05 was considered as the minimal level of statistical significance. Results regarding to the antiproliferative investigation, extract at 125, 250 μg/mL exhibited a significant cytotoxic effect on human osteosarcoma MG-63 compared to the vehicle (p<0.001) in a dose-response manner after 24h, 48h of exposure to HAEVa. Interestingly, HAEVa in concentrations of 125 and 250μg/ml showed no cytotoxicity (p>0.05) on RPDF after the different times of exposure. However, HAEVa in a high concentration of 500 μg/mL wasn´t biocompatible with RPDF. HAEVa also prevented postprandial blood glucose level in dexamethasone-induced insulin-resistant rats at both doses tested (p>0.05 and p<0.01 at doses of 50 and 100 mg/kg respectively). Conclusion the results of this study suggest that HAEVa has antiproliferative properties on MG-63 osteosarcoma in vitro and also inhibits in vivo the postprandial blood glucose level in dexamethasone-induced insulin-resistant rats.
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Affiliation(s)
- Barnabé Lucien Nkono Ya Nkono
- Department of Biological Sciences, Higher Teacher Training College, University of Yaounde 1, Yaounde, Cameroon,,Corresponding author: Barnabé Lucien Nkono Ya Nkono, Department of Biological Sciences, Higher Teacher Training College, University of Yaounde 1, Yaounde, Cameroon.
| | - Ablassé Rouamba
- Laboratoire de Biochimie et Chimie Appliquées, Université Joseph Ki-Zerbo, Ouagadougou, Burkina Faso
| | - Ioana Alexandra Duceac
- Faculty of Medical Bioengineering, Grigore T. Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Liliana Verestiuc
- Faculty of Medical Bioengineering, Grigore T. Popa University of Medicine and Pharmacy, Iasi, Romania
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Wu JY, Xie JH, Chen YJ, Fu XQ, Wang RJ, Deng YY, Wang S, Yu HX, Liang C, Yu ZL. Amelioration of TPA-induced skin inflammation by the leaf extract of Vernonia amygdalina involves ERK/STAT3 (Ser727) signaling inhibition. Phytomedicine 2022; 102:154194. [PMID: 35660348 DOI: 10.1016/j.phymed.2022.154194] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 01/24/2022] [Revised: 05/16/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Uncontrolled inflammation causes health problems. Extracellular signal-regulated kinase (ERK) phosphorylates signal transducer and activator of transcription 3 (STAT3) at Ser727, resulting in inflammation. The leaf of Vernonia amygdalina (VA) is a medicinal herb for managing inflammation-associated diseases. Oral administration or topical application of VA leaf extract exerts anti-inflammatory effects in rat models. However, the anti-inflammatory mechanisms of the herb are not fully understood. PURPOSE In this study, we aimed to investigate the involvement of ERK/STAT3 (Ser727) signaling in the anti-inflammatory effects of an ethanolic extract of VA leaves. STUDY DESIGN AND METHODS Extracts of VA leaves were prepared with different concentrations of ethanol. A LPS-stimulated RAW264.7 cell model was used for in vitro assays, and a TPA (12-O-tetradecanoylphorbol-13-acetate)-induced ear edema mouse model was employed for in vivo assays. The 95% ethanol extract of VA leaves (VAE) exerted the strongest inhibitory effect on nitric oxide (NO) production in LPS-stimulated macrophages; thus it was selected for use in this study. Hematoxylin and eosin (H&E) staining was used to examine pathological conditions of mouse ear tissues. Griess reagent was employed to examine NO generation in cell cultures. Immunoblotting and ELISA were used to examine protein levels, and RT-qPCR was employed to examine mRNA levels. RESULTS Topical application of VAE ameliorated mouse ear edema induced by TPA. VAE suppressed the phosphorylation of ERK (Thr202/Tyr204) and STAT3 (Ser727); and decreased protein levels of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin (IL)-6, IL-1β and tumor necrosis factor-α (TNF-α) in the mouse ear tissues and in LPS-stimulated RAW 264.7 cells. VAE also inhibited NO production, and lowered mRNA levels of IL-6, IL-1β and TNF-α in the macrophages. CONCLUSIONS VAE ameliorates TPA-induced mouse ear edema. Suppression of ERK/STAT3 (Ser727) signaling is involved in VAE's anti-inflammatory effects. These novel data provide further pharmacological justifications for the medicinal use of VA in treating inflammation-associated diseases, and lay the groundwork for developing VAE into a new anti-inflammatory agent.
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Key Words
- Acute inflammation
- COX-2, cyclooxygenase-2
- ERK
- ERK, extracellular signal-regulated kinase
- IL, interleukin
- MAPK, mitogen-activated protein kinase
- NO, nitric oxide
- STAT3
- STAT3, signal transducer and activator of transcription 3
- TNF-α, tumor necrosis factor-α
- TPA
- VA, Vernonia amygdalina Del.
- VAE, the 95% ethanol extract of VA leaves
- Vernonia amygdalina
- iNOS, inducible nitric oxide synthase
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Affiliation(s)
- Jia-Ying Wu
- Research and Development Centre for Natural Health Products, HKBU Institute for Research and Continuing Education, Shenzhen, China; Consun Chinese Medicines Research Centre for Renal Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Jian-Hua Xie
- Department of Food and Biological Engineering, Zhangzhou Institute of Technology, China
| | - Ying-Jie Chen
- Research and Development Centre for Natural Health Products, HKBU Institute for Research and Continuing Education, Shenzhen, China; Consun Chinese Medicines Research Centre for Renal Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Xiu-Qiong Fu
- Research and Development Centre for Natural Health Products, HKBU Institute for Research and Continuing Education, Shenzhen, China; Consun Chinese Medicines Research Centre for Renal Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Rui-Jun Wang
- Consun Chinese Medicines Research Centre for Renal Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Yu-Yi Deng
- Consun Chinese Medicines Research Centre for Renal Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Shuo Wang
- Dalian Fusheng Natural Medicine Research Institute, China
| | - Hai-Xia Yu
- Jilin Yatai Traditional Chinese Medicine Innovation Research Institute, China
| | - Chun Liang
- Division of Life Science and State Key Lab of Molecular Neuroscience, Hong Kong University of Science and Technology, China
| | - Zhi-Ling Yu
- Research and Development Centre for Natural Health Products, HKBU Institute for Research and Continuing Education, Shenzhen, China; Consun Chinese Medicines Research Centre for Renal Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
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Vonia S, Hartati R, Insanu M. In Vitro Alpha-Glucosidase Inhibitory Activity and the Isolation of Luteolin from the Flower of Gymnanthemum amygdalinum (Delile) Sch. Bip ex Walp. Molecules 2022; 27:2132. [PMID: 35408529 DOI: 10.3390/molecules27072132] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 11/24/2022]
Abstract
Diabetes mellitus is a major health issue that has posed a significant challenge over the years. Gymnanthemum amygdalinum is a well-known plant that can be potentially used to treat this disease. Therefore, this study aimed to evaluate the inhibitory effect of its root, stem bark, leaves, and flower extracts on alpha-glucosidase using an in vitro inhibition assay to isolate the bioactive compounds and determine their levels in the samples. The air-dried plant parts were extracted by maceration using methanol. The results showed that the flower extract had the greatest inhibitory effect (IC50 47.29 ± 1.12 µg/mL), followed by the leaves, roots, and stem bark. The methanolic flower extract was further fractionated with different solvents, and the ethyl acetate fraction showed the strongest activity (IC50 19.24 ± 0.12 µg/mL). Meanwhile, acarbose was used as a positive control (IC50 73.36 ± 3.05 µg/mL). Characterization based on UV, 1H-, and 13C-NMR established that the ethyl acetate fraction yielded two flavonoid compounds, namely, luteolin and 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-methoxy-4H-chromen-4-on, which had IC50 values of 6.53 ± 0.16 µg/mL and 39.95 ± 1.59 µg/mL, respectively. The luteolin levels in the crude drug, methanolic extract, and ethyl acetate fraction were 3.4 ± 0.2 mg (0.3%), 32.4 ± 0.8 mg (3.2%), and 68.9 ± 3.4 mg (6.9%) per 1 g samples, respectively. These results indicated that the G. amygdalinum flower extract exerted potent inhibitory alpha-glucosidase activity.
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Tokofai BM, Idoh K, Oke OE, Agbonon A. Hepatoprotective Effects of Vernonia amygdalina (Astereaceae) Extract on CCl 4-Induced Liver Injury in Broiler Chickens. Animals (Basel) 2021; 11:3371. [PMID: 34944148 DOI: 10.3390/ani11123371] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 12/03/2022] Open
Abstract
Simple Summary Since the ban on the use of antibiotics as growth promoters in poultry feed, many studies have focused on the use of plants in poultry feed as an alternative to this ban. Currently, many plants are used to improve the growth performance and health status of poultry. Few studies are conducted to evaluate the hepatoprotective effects of these plants in poultry. The current study showed that Vernonia amygdalina extract confers a hepatoprotective effect on poultry. Abstract The aim of this study was to evaluate the effect of Vernonia amygdalina leaf extract (VALE) on the carbon tetrachloride-induced hepatotoxicity (CCl4) in broiler chickens. A total of 360-day-old broilers were divided into 4 treatments of 90 birds each consisting of 6 replicates of 15 birds each. The treatments were birds offered 1 mL/kg BW saline (control group), 100 mg/kg BW VALE, 1 mL/kg BW CCl4 (CCl4-treated group), and 100 mg/kg BW VALE + 1 mL/kg BW CCl4 (VALE + CCl4 group). Blood samples were collected at 42 days of age and analyzed for the liver enzymes: alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and selected biochemical parameters. The experiment was laid out in a completely randomized design. The results obtained showed that VALE had the potential to mitigate the adverse effects of CCl4 on protein and lipid metabolism as reflected in the low serum malondialdehyde (MDA) levels, which is a marker of lipid peroxidation. The aqueous extract of Vernonia amygdalina (VA) at a dose of 100 mg/kg body weight showed a moderate hepatoprotective effect by reducing serum AST levels (p < 0.05). The levels of serum AST, ALP, ALT, and GGT were significantly increased in CCl4-treated birds compared to the control group, reflecting carbon tetrachloride-induced liver damage. The VALE + CCl4 group showed a significantly higher amount of ALP compared to birds treated with carbon tetrachloride, suggesting a hepatoprotective effect. To conclude, Vernonia amygdalina aqueous extract can be used to confer protection against hepatotoxicity, which can induce severe hepatocellular damage in birds.
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Syahputra R, Harahap U, Dalimunthe A, Pandapotan M, Satria D. Protective effect of Vernonia amygdalina Delile against doxorubicin-induced cardiotoxicity. Heliyon 2021; 7:e07434. [PMID: 34401548 PMCID: PMC8353308 DOI: 10.1016/j.heliyon.2021.e07434] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/20/2021] [Accepted: 06/24/2021] [Indexed: 10/29/2022] Open
Abstract
Doxorubicin has been used as an anticancer drug and has already indicated effective in the treatment of cancer. The incidence of cardiotoxicity due to doxorubicin was approximately 11%, resulting in the limited use of doxorubicin. Cardiac protection during doxorubicin therapy is needed because it can reduce the incidence of heart failure. Vernonia amygdalina (VA) is traditionally used by Indonesians as a traditional medicine and contains many secondary metabolites, including vernolide, vernodalol, vernoamygdalin, vernolepin, luteolin, luteolin 7-O-beta-glucoronoside and luteolin 7-O-glucoside. The pharmacological activity of VA has been widely studied, including its antimalarial, antidiabetic, anticancer, hepatoprotective, nephroprotective, and antioxidant activities. This research aimed to determine the antioxidant 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity, total phenol, total flavonoid, and cardioprotective effects of Vernonia Amygdalina. Negative control was only intraperitoneal injection of doxorubicin (20 mg/kgbw) on the eight day while quercetin (85 mg/kgbw) and ethanol extract of Vernonia amygdalina (EEVA) 100, 200, 400 mg/kgbw dose are orally administered for eight consecutive days. Both quercetin and EEVA groups were also injected with doxorubicin (20 mg/kgbw) on the same day. On the following day, rats were injected with ketamine HCL 75 mg/kgbw and were dissected for heart blood collected. The blood collected 3 ml from each rat was analyzed for biochemical parameters. The analyzed biochemical parameters were Aspartate transaminase (AST), Alanine transaminase (ALT), Ureum, Creatinine, Creatinine kinase-MB (CK-MB), Lactate dehydrogenase (LDH), Troponin T, Brain natriuretic peptide (BNP), and antioxidant parameter Superoxide Dismutase (SOD). The result showed that EEVA antioxidant activity was 40.51 ± 4.89 μg/mL, total flavonoid was 3.79 ± 0.61 mg QE/g extract, and total phenol was 281.575 ± 1.069 mg GAE/g extract. Quercetin (85 mg/kgbw) and EEVA (400 mg/kgbw) reduce AST, ALT, Ureum, Creatinine, CK- MB, LDH, Troponin T, BNP significantly and increase rats' SOD level compared with negative control. So that, this study explicates that EEVA potentials as cardioprotective agent against doxorubicin by reducing biochemical parameters.
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Affiliation(s)
- R.A. Syahputra
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - U. Harahap
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - A. Dalimunthe
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - M. Pandapotan
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - D. Satria
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Sumatera Utara, Medan 20155, Indonesia
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Liu H, Kang P, Liu Y, An Y, Hu Y, Jin X, Cao X, Qi Y, Ramesh T, Wang X. Zinc oxide nanoparticles synthesised from the Vernonia amygdalina shows the anti-inflammatory and antinociceptive activities in the mice model. Artif Cells Nanomed Biotechnol 2021; 48:1068-1078. [PMID: 32815404 DOI: 10.1080/21691401.2020.1809440] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this study, we synthesised the zinc oxide nanoparticles from Vernonia amygdalina and evaluated its anti-inflammatory and antinociceptive potentials against the different inflammation and pain induced mice model. The synthesised zinc oxide nanoparticles were characterised by UV, SEM, XRD and FTIR techniques. The anti-nociceptive effects of V. amygdalina were examined by different stimuli e.g. acetic acid, glutamate, capsaicin, and formalin-induced nociception in mice. The anti-inflammatory effects of synthesised zinc oxide nanoparticles were assessed by air sack assessment and the level of inflammatory cytokines were studied. The muscle tension of animals were studied through open field assessment. The present study exhibited proficient antinociceptive and anti-inflammatory actions of the synthesised Zinc oxide nanoparticles from V. amygdalina. The sormulated zinc oxide nanoparticles were appreciably reduced the acetic acid, glutamate, capsaicin, and formalin-induced nociceptive responses in mice. Further the zinc nanoparticles were exhibited the potent anti-inflammatory actions via reducing the inflammatory response and pro-inflammatory cytokines level in the mice. In conclusion, the findings of this study proved the beneficial effects of zinc oxide nanoparticles from V. amygdalina against the different pain and inflammation-induced mice. Hence, it was clear that the zinc nanoparticles from V. amygdalina could be promising antinociceptive and anti-inflammatory agent in the future.
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Affiliation(s)
- Hairui Liu
- Department of Anesthesiology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Peipei Kang
- Department of Anesthesiology, Department of Nantong Tumor Hospital, Nantong city, Jiangsu, China
| | - Ying Liu
- Department of Anesthesiology, Qinghai Women and Children's Hospital Qinghai, Gansu, China
| | - Yifan An
- Department of Anesthesiology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Yanting Hu
- Department of Anesthesiology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Xiyuan Jin
- Department of Anesthesiology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xin Cao
- Department of Anesthesiology, XIN FENG XIAN People's Hospital Ganzhou, Jiangxi, China
| | - Yunfei Qi
- Department of Anesthesiology, PLA 949 Hospital Aletai City, Xinjiang, China
| | - Thiyagarajan Ramesh
- Department of Basic Medical Sciences, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
| | - Xiao Wang
- Department of Anesthesiology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
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Erukainure OL, Islam MS. Vernonia amygdalina stimulates muscle glucose uptake and modulates redox activities and functional chemistry in oxidative hepatic injury. J Food Biochem 2021; 46:e13794. [PMID: 34057221 DOI: 10.1111/jfbc.13794] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/30/2021] [Accepted: 05/07/2021] [Indexed: 10/21/2022]
Abstract
The ethyl acetate, ethanol, and aqueous extracts sequentially obtained from the leaves of Vernonia amygdalina were investigated for their antidiabetic and antioxidant protective effect in oxidative hepatic injury. The extracts showed significant (p < .05) free radical scavenging and reducing power activities. They significantly (p < .05) elevated reduced glutathione level, superoxide dismutase, and catalase activities, with concomitant depletion of malondialdehyde level. The ethanol and aqueous extracts caused a removal of oxidative-included chemical functional group at 1,500-1,200 (amide II)/cm region, with the inclusion of a functional group at 3,000-2,800 (carboxylic acid)/cm region. The extracts significantly (p < .05) inhibited the activities of α-glucosidase and α-amylase and stimulated glucose uptake in rat muscles. Gas chromatography-mass spectrometric (GC-MS) analysis revealed phytol as the predominant compound, with ethanol having the highest concentration. Based on the IC50 values, the ethanol extract exhibited the best activities, followed by the ethyl acetate extract, while the aqueous extract was the least. These results suggest the antioxidative and antidiabetic properties of V. amygdalina as evident by their modulation of antioxidant biomarkers and oxidative-induced chemistry changes and stimulate muscle glucose uptake. PRACTICAL APPLICATIONS: Vernonia amygdalina (bitter leaf) is amongst the common leafy vegetables in West Africa reported for its various medicinal and nutritional properties. It is utilized as a food ingredient as well as supplement for the treatment and management of type 2 diabetes. The ability of its extracts to stimulate glucose uptake and protect against diabetic-induced changes in the chemical functional groups of the liver gives more credence to its reported antidiabetic properties. Being a common leafy vegetable, V. amygdalina can be a cheap source of nutraceutical for the treatment and management of type 2 diabetes and its complications.
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Affiliation(s)
- Ochuko L Erukainure
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa.,Department of Pharmacology, School of Clinical Medicine, Faculty of Health Sciences, University of the Free State, Bloemfontein, South Africa
| | - Md Shahidul Islam
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
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Joseph J, Khor KZ, Moses EJ, Lim V, Aziz MY, Abdul Samad N. In vitro Anticancer Effects of Vernonia amygdalina Leaf Extract and Green-Synthesised Silver Nanoparticles. Int J Nanomedicine 2021; 16:3599-3612. [PMID: 34079252 PMCID: PMC8164701 DOI: 10.2147/ijn.s303921] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 02/02/2021] [Accepted: 04/13/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Vernonia amygdalina (VA) is a traditional African herbal medicine that has been reported to possess anticancer properties. However, the anticancer properties of VA silver nanoparticles have not been studied. The aim of the study was to examine and evaluate the anticancer activities of VA leaf extracts and VA silver nanoparticles on the human breast cancer cell line, MCF-7. Methods VA leaves were extracted using sequential extraction assisted with ultrasound using three different solvents: ethanol, 50% ethanol, and deionized water. The silver nanoparticles were synthesised with VA aqueous extract. Results The ethanol extract and VA silver nanoparticles inhibit MCF-7 cell proliferation with an average half-maximal inhibitory concentration (IC50) value of 67µg/mL and 6.11µg/mL, respectively, after 72 hours of treatment. The ethanol extract and VA silver nanoparticles also caused G1 phase cell cycle arrest, induced apoptosis and nuclear fragmentation in MCF-7 cells. Conclusion VA ethanol extracts and VA silver nanoparticles decreased the cell viability in MCF-7 cells in a time and dose-dependent manner by inducing apoptosis and causing DNA damage. Further research is needed to elucidate the mechanism of action of VA leaf extracts and VA silver nanoparticles. This study is the first to report on the anticancer activity of VA silver nanoparticles in MCF-7 cells.
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Affiliation(s)
- Julia Joseph
- Integrative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Sains@BERTAM, Universiti Sains Malaysia, Kepala Batas, 13200, Pulau Pinang, Malaysia
| | - Kang Zi Khor
- Integrative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Sains@BERTAM, Universiti Sains Malaysia, Kepala Batas, 13200, Pulau Pinang, Malaysia
| | - Emmanuel Jairaj Moses
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Sains@BERTAM, Universiti Sains Malaysia, Kepala Batas, 13200, Pulau Pinang, Malaysia
| | - Vuanghao Lim
- Integrative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Sains@BERTAM, Universiti Sains Malaysia, Kepala Batas, 13200, Pulau Pinang, Malaysia
| | - Mohd Yusmaidie Aziz
- Integrative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Sains@BERTAM, Universiti Sains Malaysia, Kepala Batas, 13200, Pulau Pinang, Malaysia
| | - Nozlena Abdul Samad
- Integrative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Sains@BERTAM, Universiti Sains Malaysia, Kepala Batas, 13200, Pulau Pinang, Malaysia
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Shui L, Huo K, Chen Y, Zhang Z, Li Y, Niu J. Integrated metabolome and transcriptome revealed the flavonoid biosynthetic pathway in developing Vernonia amygdalina leaves. PeerJ 2021; 9:e11239. [PMID: 33981500 PMCID: PMC8083182 DOI: 10.7717/peerj.11239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 11/26/2020] [Accepted: 03/17/2021] [Indexed: 12/18/2022] Open
Abstract
Background Vernonia amygdalina as a tropical horticultural crop has been widely used for medicinal herb, feed, and vegetable. Recently, increasing studies revealed that this species possesses multiple pharmacological properties. Notably, V. amygdalina leaves possess an abundance of flavonoids, but the specific profiles of flavonoids and the mechanisms of fl avonoid bi osynthesis in developing leaves are largely unknown. Methods The total flavonoids of V. amygdalina leaves were detected using ultraviolet spectrophotometer. The temporal flavonoid profiles of V. amygdalina leaves were analyzed by LC-MS. The transcriptome analysis of V. amygdalina leaves was performed by Illumina sequencing. Functional annotation and differential expression analysis of V. amygdalina genes were performed by Blast2GO v2.3.5 and RSEM v1.2.31, respectively. qRT-PCR analysis was used to verify the gene expressions in developing V. amygdalina leaves. Results By LC-MS analysis, three substrates (p-coumaric acid, trans-cinnamic acid, and phenylalanine) for flavonoid biosynthesis were identified in V. amygdalina leaves. Additionally, 42 flavonoids were identified from V. amygdalina leaves, including six dihydroflavones, 14 flavones, eight isoflavones, nine flavonols, two xanthones, one chalcone, one cyanidin, and one dihydroflavonol. Glycosylation and methylation were common at the hydroxy group of C3, C7, and C4’ positions. Moreover, dynamic patterns of different flavonoids showed diversity. By Illumina sequencing, the obtained over 200 million valid reads were assembled into 60,422 genes. Blast analysis indicated that 31,872 genes were annotated at least in one of public databases. Greatly increasing molecular resources makes up for the lack of gene information in V. amygdalina. By digital expression profiling and qRT-PCR, we specifically characterized some key enzymes, such as Va-PAL1, Va-PAL4, Va-C4H1, Va-4CL3, Va-ACC1, Va-CHS1, Va-CHI, Va-FNSII, and Va-IFS3, involved in flavonoid biosynthesis. Importantly, integrated metabolome and transcriptome data of V. amygdalina leaves, we systematically constructed a flavonoid biosynthetic pathway with regards to material supplying, flavonoid scaffold biosynthesis, and flavonoid modifications. Our findings contribute significantly to understand the underlying mechanisms of flavonoid biosynthesis in V. amygdalina leaves, and also provide valuable information for potential metabolic engineering.
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Affiliation(s)
- Lanya Shui
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, College of Forestry, Hainan University, Haikou, Hainan, China
| | - Kaisen Huo
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, College of Forestry, Hainan University, Haikou, Hainan, China
| | - Yan Chen
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, College of Forestry, Hainan University, Haikou, Hainan, China
| | - Zilin Zhang
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, College of Forestry, Hainan University, Haikou, Hainan, China
| | - Yanfang Li
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, College of Forestry, Hainan University, Haikou, Hainan, China
| | - Jun Niu
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, College of Forestry, Hainan University, Haikou, Hainan, China
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Oladele JO, Oyeleke OM, Oladele OT, Oladiji AT. Covid-19 treatment: Investigation on the phytochemical constituents of Vernonia amygdalina as potential Coronavirus-2 inhibitors. ACTA ACUST UNITED AC 2021; 18:100161. [PMID: 33619460 DOI: 10.1016/j.comtox.2021.100161] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 08/05/2020] [Revised: 01/08/2021] [Accepted: 02/14/2021] [Indexed: 11/23/2022]
Abstract
The upsurge in the current cases of COVID-19 poses a major threat on human health and population all over the globe. The emergence of new infectious diseases and increase in frequency of drug resistant viruses demand effective and novel therapeutic agents. In this study, we used bioinformatics approach to investigate the possible inhibitory potentials of phytochemical constituents of Vernonia amygdalina towards coronavirus-2 major protease. Pharmacodynamics, pharmacokinetics and toxicological profiles of the compounds were also examined using the pkCSM server. All the phytochemicals showed good binding affinity to the binding pocket of PDB ID 6LU7. It was observed that veronicoside A exhibited the highest binding affinity when compared to remdesivir, hydroxy-vernolide, vernodalin, vernodalol, and vernolide. The amino acids LEU272, LEU287, GLY275, TYR237, LYS236, THR198, THR199, ARG131, and LYS5 were showed as the key residues for veronicoside A binding to human SARS-COV2 major protease. The Pharmacodynamics and pharmacokinetics results suggested that all the tested phytochemicals have significant drug likeness properties and they could be absorbed through the human intestine. Furthermore, all the tested phytochemicals are not hepatoxic and also exhibited non or relatively low toxic effects in human. Taken together, the results of this study indicated that all the tested phytochemicals are potential putative inhibitors of SARS-COV2 major protease with non or low toxicity effects. However, further experimental and clinical studies are needed to further explore their activities and validate their efficacies against COVID-19.
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Mosisa Gudeta B, Melesie Taye G, Abula T, Alemayehu Gadisa D. Evaluation of Anti-Diarrheal Activity of 80% Methanol Extracts of Vernonia amygdalina Delile (Asteraceae) Leaves in Mice. J Exp Pharmacol 2020; 12:455-462. [PMID: 33177891 PMCID: PMC7652236 DOI: 10.2147/jep.s282669] [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: 09/22/2020] [Accepted: 10/27/2020] [Indexed: 11/23/2022] Open
Abstract
Introduction Diarrhea is a cause of morbidity and mortality, especially in children. Patients with diarrhea have been suffering from limited treatment options due to poor drug tolerance, side effect, and multi-drug resistance to almost all the current drug treatments. Therefore, it is important to search for a new therapeutic medicine that can effectively prevent the disease and safe. Vernonia amygdalina is an indigenous medicinal plant used traditionally for the treatment of diarrhea in Ethiopia. The aim of this study was therefore to confirm the antidiarrheal activities of 80% methanol leaves extract using mice models. Materials and Methods The antidiarrheal activities of the 80% methanol leaves extract were investigated using castor oil-induced diarrhea, intestinal motility, and enteropooling models in mice. The negative control received distilled water orally, the test groups received three dose levels (100, 200, and 400 mg/kg) of the plant materials, and the positive control is given 3 mg/kg Loperamide orally. Results In the castor oil-induced diarrheal model, the extract delayed onset of diarrhea and reduced fecal parameters at all tested doses significantly as compared with the negative control. Results from the charcoal meal test revealed that the extract produced a significant anti-motility effect at all tested doses as compared with the negative control. In the enteropooling test, the extract produced a significant decline in the volume and weight of intestinal contents. The observed antidiarrheal activity could be associated with the phytochemicals present in this plant extract. It was also observed that the extracts have shown no acute toxicity at a dose of 2 g/kg. Conclusion This study provides the antidiarrheal activity of the crude extract in all three models. Hence, the findings provide scientific support for the traditional use of Vernonia amygdalina leaves as treatment of diarrhea.
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Affiliation(s)
- Biruk Mosisa Gudeta
- Department of Pharmacy, College of Medicine and Health Sciences, Ambo University, Ambo, Ethiopia
| | - Getu Melesie Taye
- Department of Pharmacy, College of Medicine and Health Sciences, Ambo University, Ambo, Ethiopia
| | - Teferra Abula
- Department of Pharmacology, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Diriba Alemayehu Gadisa
- Department of Pharmacy, College of Medicine and Health Sciences, Ambo University, Ambo, Ethiopia
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21
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Eze JC, Okafor F, Nwankwo NE, Okeke ES, Onwudiwe NN. Schistosomiasis prevention option: toxicological evaluation of Vernonia amygdalina on the tissues of Bulinus truncatus at different pH conditions. Heliyon 2020; 6:e04796. [PMID: 32923725 DOI: 10.1016/j.heliyon.2020.e04796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/16/2020] [Accepted: 08/24/2020] [Indexed: 11/27/2022] Open
Abstract
Research into, and the use of plant products in the control of vectors of pathogens is being revived and seriously considered as an alternative or complete replacement for the classical synthetic agents. The study was designed to investigate toxicological assessment of the aqueous leaf extract of Vernonia amygdalina on mortality and tissue level damages of the freshwater snail Bulinus truncatus at different pH levels. The effects of the extract on total protein concentration and activities of acetylcholinesterase, acid phosphatase and alkaline phosphatase in the tissues of the snail were assayed using standard methods. Compared to the control (snail group not treated with the extract of V. amygdalina), there were significant (p < 0.05) reductions in the total protein concentrations and acetylcholinesterase activity in the snails' tissues of the treated groups (0.20 mg/L, 0.40 mg/L and 1.00 mg/L) at all the pH conditions (3.5, 7.0 and 10.5). The reverse of this trend followed in the case of acid and alkaline phosphatases’ activities. The study provides a substantial possibility of exploiting local indigenous plant resources such as V. amygdalina for control of freshwater snails and monitor water pollution. The study also raised a possibility of the locals living around freshwater bodies prone to trematode borne diseases to reflexively control freshwater snail population by just squeeze-washing their V. amygdalina around the river banks.
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22
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Oladele JO, Oyeleke OM, Oladele OT, Olaniyan M. Neuroprotective mechanism of Vernonia amygdalina in a rat model of neurodegenerative diseases. Toxicol Rep 2020; 7:1223-1232. [PMID: 32995297 PMCID: PMC7509141 DOI: 10.1016/j.toxrep.2020.09.005] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 09/03/2020] [Accepted: 09/06/2020] [Indexed: 02/08/2023] Open
Abstract
The global upsurge in the prevalence of neurodegenerative diseases in recent years has been associated with increase in toxic chemical exposure and release into the biosystem, having over 46.8 million people suffer dementia worldwide. This study focused on elucidating the neuroprotective mechanism of methanol leaf extract of Vernonia amygdalina (MLVA) in nitrobenzene-induced neurodegenerative disease in rats. Thirty aged male rats were sorted into five groups of six rats each. Group A received distilled water while 100 mg/kg bw of nitrobenzene was orally administered to groups (B to E) to induce neurodegeneration. Group B (disease control) was untreated, while Group C and D were treated with oral administration of 200 and 400 mg/kg bw of MLVA respectively and group E with vitamin E for 14 days. Locomotor behaviour was analysed using video-tracking software while the midbrain, cerebrum and cerebellum of the rats were processed for biochemical analyses. Results showed that treatment of nitrobenzene-induced neurodegenerative rats with MLVA significantly (p < 0.05) increase dopamine, GSH, antioxidant enzymes levels; and decrease acetylcholinesterase activity, biomarkers of inflammatory and oxidative stress level. Also, MLVA enhanced neurobehavioural and locomotor activities in all markers assessed. Taken together, neuroprotective mechanisms of MLVA can be linked to its antioxidant, acetylcholinesterase suppression, lipid peroxidation inhibition, anti-inflammatory and neurobehavioural restoring abilities.
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Affiliation(s)
- Johnson O. Oladele
- Biochemistry Unit, Department of Chemical Sciences, Faculty of Science, Kings University, Ode-Omu, Osun State, Nigeria
| | - Oyedotun M. Oyeleke
- Biochemistry Unit, Department of Chemical Sciences, Faculty of Science, Kings University, Ode-Omu, Osun State, Nigeria
- Phytomedicine and Toxicology Laboratories, Department of Biochemistry, Faculty of Basic and Applied Sciences, Osun State University, Osogbo, Nigeria
| | - Oluwaseun T. Oladele
- Phytomedicine and Toxicology Laboratories, Department of Biochemistry, Faculty of Basic and Applied Sciences, Osun State University, Osogbo, Nigeria
| | - Monisola Olaniyan
- Biochemistry Unit, Department of Chemical Sciences, Faculty of Science, Kings University, Ode-Omu, Osun State, Nigeria
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23
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Yusoff SF, Haron FF, Tengku Muda Mohamed M, Asib N, Sakimin SZ, Abu Kassim F, Ismail SI. Antifungal Activity and Phytochemical Screening of Vernonia amygdalina Extract against Botrytis cinerea Causing Gray Mold Disease on Tomato Fruits. Biology (Basel) 2020; 9:E286. [PMID: 32932993 DOI: 10.3390/biology9090286] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/29/2020] [Accepted: 09/09/2020] [Indexed: 01/28/2023]
Abstract
Gray mold disease caused by Botrytis cinerea is a damaging postharvest disease in tomato plants, and it is known to be a limiting factor in tomato production. This study aimed to evaluate antifungal activities of Vernonia amygdalina leaf extracts against B. cinerea and to screen the phytochemical compound in the crude extract that had the highest antifungal activity. In this study, crude extracts of hexane, dichloromethane, methanol, and water extracts with concentration levels at 100, 200, 300, 400, and 500 mg/mL were shown to significantly affect the inhibition of B. cinerea. Among the crude extracts, dichloromethane extract was shown to be the most potent in terms of antifungal activities. The SEM observation proved that the treatment altered the fungal morphology, which leads to fungal growth inhibition. For the in vivo bioassay, the fruits treated with dichloromethane extract at 400 and 500 mg/mL showed the lowest disease incidence with mild severity of infection. There were 23 chemical compounds identified in V. amygdalina dichloromethane extract using GCMS analysis. The top five major compounds were dominated by squalene (16.92%), phytol (15.05%), triacontane (11.31%), heptacosane (7.14%), and neophytadiene (6.28%). Some of these significant compounds possess high antifungal activities. This study proved that V. amygdalina from dichloromethane extract could be useful for inhibiting gray mold disease on tomato fruit and has potential as a natural antifungal agent.
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24
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Okoduwa SIR, Umar IA, James DB, Inuwa HM, Habila JD, Venditti A. Bioguided fractionation of hypoglycaemic component in methanol extract of Vernonia amygdalina: an in vivo study. Nat Prod Res 2020; 35:5943-5947. [PMID: 32787625 DOI: 10.1080/14786419.2020.1805605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Nine components (C1-C9) were isolated from chloroform fraction of fractionated methanol extracts of Vernonia amygdalina leaves (FMEVA) by column chromatography. All the components C1 to C9 were purified and screened for hypoglycaemic activities in type-2 diabetic rats. The most potent hypoglycaemic component was elucidated on the basis of extensive spectroscopic (1D-, 2D-NMR, GC-MS, FTIR) data analysis. The Component C5 was found to be the most potent hypoglycaemic in reducing blood glucose by 12.55 ± 3.55% at 4 h post-oral administration, when compared to the positive (18.07 ± 1.20%) and negative (-1.99 ± 0.43%) controls. The spectroscopic data analysis reveals that the isolated compound has a structure consistent with 11β,13-dihydrovernolide. The isolated compound is part of the hypoglycaemic components present in V. amygdalina leaves that is responsible for the anti-diabetic activities. Further research is needed in the development of this compound or its derivatives for pharmaceutical use.
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Affiliation(s)
- Stanley I R Okoduwa
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria.,Directorate of Research and Development, Nigerian Institute of Leather and Science Technology, Zaria, Nigeria
| | - Isma'ila A Umar
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - Dorcas B James
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - Hajiya M Inuwa
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - James D Habila
- Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria
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25
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Abstract
In this study, a new stigmastane, vernonioside V, was isolated from the ethanol extract of leaves of Vernonia amygdalina along with a known flavonoid, cynaroside, and then anti-inflammatory activity of isolated compounds was investigated. The result showed that vernonioside V at concentration of 30 µg/mL strongly inhibited TNFα, IL-6, and IL-8 inflammatory cytokine production. Furthermore, LPS-induced supreoxide generation in Raw 264.7 were significantly reduced by pre-treatment of vernonioside V (30 µg/mL). These data indicated that vernonioside V had inhibitory activities on pro-inflammatory cytokine in LPS-stimulated Raw 264.7 through reactive oxygen species (ROS).
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Affiliation(s)
- Thi Xuan Thu Nguyen
- Faculty of Chemical Engineering, University of Science and Technology, The University of Danang, Da Nang, Vietnam
| | - Duc Long Dang
- VN-UK Institute for Research and Executive Education, The University of Danang, Da Nang, Vietnam
| | - Van Quang Ngo
- Institute of Chemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Tat Cuong Trinh
- Key Laboratory for Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam
| | - Quang Nam Trinh
- Key Laboratory for Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam.,Hanoi- Amsterdam High School for The Gifted, Hanoi, Vietnam
| | | | - Thi Thu Thuy Thanh
- Institute of Chemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
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26
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Acheampong DO, Owusu-Adzorah N, Armah FA, Aninagyei E, Asiamah EA, Thomford AK, Anyan WK. Ethnopharmacological evaluation of schistosomicidal and cercaricidal activities of some selected medicinal plants from Ghana. Trop Med Health 2020; 48:19. [PMID: 32308530 PMCID: PMC7147056 DOI: 10.1186/s41182-020-00205-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 12/27/2019] [Accepted: 03/25/2020] [Indexed: 11/23/2022] Open
Abstract
Background The adulticidal and cercaricidal activities of five Ghanaian medicinal plants, namely, Phyllanthus amarus, Vernonia amygdalina, Azadirachta indica, Morinda lucida and Nauclea latifolia against S. mansoni were evaluated in this study. Six weeks old ICR mice (n = 25) were percutaneously infected with S. mansoni cercariae. Nine weeks later, infected mice (n = 5) were anaesthetised and perfused for adult S. mansoni. Cercariae were treated with different concentrations (1000, 500, 250, 125, 62.5, 31.25 μg/mL) of methanolic extracts of the experimenting plants in triplicates. Adult S. mansoni incopula were also treated with same concentrations of each extract or 20 μg/mL praziquantel. The cercariae and adult worms were observed at time intervals for 180 min and 120 h to assess mortality and viability respectively. Additionally, 9-week cercariae-infected mice (4 groups of 5 mice) were treated with either 500 mg/kg po A. indica or V. amygdalina, 400 mg/kg po praziquantel or distilled water for 14 days. The mice were euthanized after adult worms were recovered from them. The liver was processed and histologically examined for granuloma formations. Results All the plants exhibited varying cercaricidal and adulticidal activities against S. mansoni in a time and concentration-dependent manner. A. indica (3 h IC50 = 27.62 μg/mL) and V. amygdalina (3 h IC50 = 35.84 μg/mL) exerted the highest cercaricidal activity. Worm recovery after treatment with V. amygdalina, A. indica and praziquantel in vivo was 48.8%, 85.1 % and 59.9 % respectively (p < 0.05). A. indica and V. amydalina-treated mice recorded lesser mean liver and spleen weights compared to untreated groups (p < 0.05). Conclusion A. indica demonstrated the highest cercaricidal and alduticidal activities in vitro, whereas V. amygdalina exhibited the most potent aldulticidal activity in vivo. This study could provide baseline information which can be used to develop plant-based alternative commercial drugs against S. mansoni.
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Affiliation(s)
- Desmond Omane Acheampong
- 1Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Science, University of Cape Coast, Cape Coast, Ghana
| | - Ninette Owusu-Adzorah
- 1Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Science, University of Cape Coast, Cape Coast, Ghana
| | - Francis Ackah Armah
- 1Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Science, University of Cape Coast, Cape Coast, Ghana
| | - Enoch Aninagyei
- 2Department of Biomedical Sciences, School of Basic and Biomedical Sciences, University of Health and Allied Sciences, Ho, Volta Region, Ghana
| | - Ernest Amponsah Asiamah
- 1Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Science, University of Cape Coast, Cape Coast, Ghana
| | - Ama Kyeraa Thomford
- 1Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Science, University of Cape Coast, Cape Coast, Ghana
| | - William Kofi Anyan
- 3Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana
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27
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Enemchukwu CM, Oli AN, Okoye EI, Ujam NT, Osazuwa EO, Emechebe GO, Okeke KN, Ifezulike CC, Ejiofor OS, Okoyeh JN. Winning the War against Multi-Drug Resistant Diarrhoeagenic Bacteria. Microorganisms 2019; 7:microorganisms7070197. [PMID: 31295889 PMCID: PMC6680719 DOI: 10.3390/microorganisms7070197] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/13/2019] [Accepted: 05/13/2019] [Indexed: 01/12/2023] Open
Abstract
Drug-resistant-diarrhoeagenic bacteria are currently emerging healthcare challenge. This study investigated the effects of Vernonia amygdalina, Garcinia kola, tetracycline and metronidazole combinations on such bacteria. Agar well diffusion method was employed to determine the inhibitory effects of the herbal extracts on diarrhoeagenic bacteria while Time-Kill Assay was used to determine bactericidal effects of the extracts against test isolates. Interactions between plant extracts and antibiotics were investigated using Checkerboard assay. Minimum inhibitory concentrations of the extracts against the bacterial isolates ranged between 3.125–50 mg/mL, while those of tetracycline and metronidazole ranged from 30–50 μg/mL. Synergism was observed against B. cereus and S. aureus for metronidazole + aqueous G. kola at all ratios. Generally, the combinations aqueous G. kola + ethanolic G. kola and aqueous G. kola + ethanolic V. amygdalina showed more pronounced synergism against the Staphylococcus aureus than B. cereus isolates with the fractional inhibition concentration (FIC) indices ranging from 0.32–0.95. Synergism of tetracycline + crude extracts and metronidazole combinations were more pronounced on the test isolates and especially on the Gram-negative organisms with FIC indices ranging from 0.41–0.91. Conclusion: The herbal extracts combinations and extracts–antibiotics combinations are synergistic on diarrhoeagenic bacteria at defined combination ratios.
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Affiliation(s)
- Chizoba Mercy Enemchukwu
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, Agulu, Nnamdi Azikiwe University, Awka 420108, Nigeria
| | - Angus Nnamdi Oli
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, Agulu, Nnamdi Azikiwe University, Awka 420108, Nigeria.
| | - Ebere Innocent Okoye
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Agulu, Nnamdi Azikiwe University, Awka 420108, Nigeria
| | - Nonye Treasure Ujam
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, Enugu State University of Science and Technology, Enugu 400102, Nigeria
| | - Emmanuel O Osazuwa
- Department of Pharmaceutical Microbiology, School of Pharmacy, University of Benin, Benin-City 300271 Edo State, Nigeria
| | - George Ogonna Emechebe
- Department of Pediatrics, Chukwuemeka Odumegwu Ojukwu University, Awka 420108, Anambra State, Nigeria
| | - Kenneth Nchekwube Okeke
- Department of Pediatrics, Chukwuemeka Odumegwu Ojukwu University, Awka 420108, Anambra State, Nigeria
| | | | - Obiora Shedrack Ejiofor
- Department of Pediatrics, Chukwuemeka Odumegwu Ojukwu University, Awka 420108, Anambra State, Nigeria
| | - Jude Nnaemeka Okoyeh
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Winston Salem State University, Winston-Salem, NC 27101, USA
- Department of Biology and Clinical Laboratory Science, Division of Arts and Sciences, Neumann University, One Neumann Drive, Aston, PA 19014-1298, USA
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28
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Anh HLT, Vinh LB, Lien LT, Cuong PV, Arai M, Ha TP, Lin HN, Dat TTH, Cuong LCV, Kim YH. In vitro study on α-amylase and α-glucosidase inhibitory activities of a new stigmastane-type steroid saponin from the leaves of Vernonia amygdalina. Nat Prod Res 2019; 35:873-879. [PMID: 31204853 DOI: 10.1080/14786419.2019.1607853] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Using various chromatographic separations, four compounds, including one new steroid saponin named vernoamyoside E (1), were isolated from the leaves of the Vietnamese medicinal plant Vernonia amygdalina Delile (Asteraceae). Their structures were established by spectroscopic methods such as 1D- and 2D-NMR, HR-ESI-MS, and HPLC analysis. The inhibitory activities against α-glucosidase and α-amylase of the isolated compounds from V. amygdalina were reported for the first time. The results indicated that compound 1 significantly inhibited both against α-amylase and α-glucosidase activity.
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Affiliation(s)
- Hoang Le Tuan Anh
- Mientrung Institute for Scientific Research Vietnam Academy of Science and Technology, Hue city, Vietnam.,Graduate University of Science and Technology Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Le Ba Vinh
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea.,Institute of Marine Biochemistry Vietnam Academy of Science and Technology, Ha Noi, Vietnam
| | - Le Thi Lien
- Mientrung Institute for Scientific Research Vietnam Academy of Science and Technology, Hue city, Vietnam.,Graduate University of Science and Technology Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Pham Viet Cuong
- Mientrung Institute for Scientific Research Vietnam Academy of Science and Technology, Hue city, Vietnam
| | - Masayoshi Arai
- Research Center for Drug Discovery, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Tran Phuong Ha
- Mientrung Institute for Scientific Research Vietnam Academy of Science and Technology, Hue city, Vietnam
| | - Hoang Ngoc Lin
- Mientrung Institute for Scientific Research Vietnam Academy of Science and Technology, Hue city, Vietnam
| | - Ton That Huu Dat
- Mientrung Institute for Scientific Research Vietnam Academy of Science and Technology, Hue city, Vietnam
| | - Le Canh Viet Cuong
- Mientrung Institute for Scientific Research Vietnam Academy of Science and Technology, Hue city, Vietnam
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
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Orisakwe OE, Ozoani HA, Nwaogazie IL, Ezejiofor AN. Probabilistic health risk assessment of heavy metals in honey, Manihot esculenta, and Vernonia amygdalina consumed in Enugu State, Nigeria. Environ Monit Assess 2019; 191:424. [PMID: 31183582 DOI: 10.1007/s10661-019-7549-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 12/12/2018] [Accepted: 05/21/2019] [Indexed: 06/09/2023]
Abstract
Honey is a nutritive fluid product of bees with an array of pharmacological/medicinal effects. As a natural product from honeybees, honey is regarded to be safe and free from any contaminants. Cassava tuber (Manihot esculenta)-based meal, Vernonia amygdalina (bitter leaf soup), and honey are common local cuisine in Nigeria. This is a human health risk assessment of heavy metals associated with the consumption of honey (Apis mellifera scutellata), cassava (Manihot esculenta), and bitter leaf (Vernonia amygdalina) in Enugu State, Nigeria. Concentrations of lead (Pb), Cd, As, Cu, Ni, Mn, Fe, Cr, and Fe in honey, soil, Manihot esculenta, and Vernonia amygdalina were determined using an atomic absorption spectrophotometer (AAS). The principal component analysis (PCA) was performed as a factor reduction technique among 12 factors (3 locations against 4 sources of heavy metals). The mean concentration of metals in honey, soil, Manihot esculenta, and Vernonia amygdalina ranged from 0.001 to 4.28 mg kg-1, from 0.0026 to 170.52 mg kg-1, from 0.012 to 80.63 mg kg-1, and from 0.0016 to 126.48 mg kg-1, respectively. Pb showed the highest carcinogenic risk with values of 3.18E-04-1.43E-01 in Vernonia amygdalina and 1.69E-04-3.47E-04 in Manihot esculenta for adults and children, respectively. In honey, Cd showed the highest carcinogenic risk with values of 1.26E-02-1.07E-01. About 51.5% of total cancer risk (TCR) was below 1E-04. Consumption of honey, Vernonia amygdalina, and Manihot esculenta in some urban parts of Enugu may pose some adverse health effects.
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Affiliation(s)
- Orish Ebere Orisakwe
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port Harcourt, PMB, Port Harcourt, Rivers State, 5323, Nigeria.
| | - Harrison Anezi Ozoani
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port Harcourt, PMB, Port Harcourt, Rivers State, 5323, Nigeria
| | - Ify Lawerence Nwaogazie
- Department of Civil & Environmental Engineering, Faculty of Engineering, University of Port Harcourt, PMB, Port Harcourt, Rivers State, 5323, Nigeria
| | - Anthonet Ndidi Ezejiofor
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port Harcourt, PMB, Port Harcourt, Rivers State, 5323, Nigeria
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30
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Erukainure OL, Oyebode OA, Ibeji CU, Koorbanally NA, Islam MS. Vernonia Amygdalina Del. stimulated glucose uptake in brain tissues enhances antioxidative activities; and modulates functional chemistry and dysregulated metabolic pathways. Metab Brain Dis 2019; 34:721-732. [PMID: 30607820 DOI: 10.1007/s11011-018-0363-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 09/16/2018] [Accepted: 12/04/2018] [Indexed: 12/21/2022]
Abstract
Brain glucose uptake is usually reduced in type 2 diabetes owing to downregulation of brain glucose transporters. The ability of Vernonia amygdalina to stimulate glucose uptake as well as ameliorate glucose-induced oxidative stress and proinflammation were investigated in rat brain. Hot infusion of V. amygdalina leaves was incubated with rat brain tissues for 2 h in the presence of glucose. Another incubation with glucose only, served as negative control while metformin served as positive control. Incubation of brain tissues with V. amygdalina led to significant (p < 0.05) increase in glucose uptake, reduced glutathione, nitric oxide and non-thiol proteins levels, superoxide dismutase, catalase and ATPase activities, while concomitantly decrease in myeloperoxidase activity and malondialdehyde level compared to the negative control. Incubation with glucose only, led to the development of nitrate, amide II and amide I functional groups which were removed on incubation with the infusion. LC-MS analysis revealed depletion of oxidative stress-induced 2-keto-glutaramic acid and cysteinyl-tyrosine metabolites in brain tissues, with concomitant generation of S-formylglutathione and adenosine tetraphosphate by the infusion. Pathway analysis of the metabolites revealed an activation of pyruvate metabolism pathway in the negative control, with the infusion reducing the intensity fold. LC-MS analysis of the infusion revealed the presence of l-serine, l-cysteine, l-proline, nicotinic acid, cumidine, salicylic acid, isoquinoline, 3-methyl-, and γ-octalactone. Except for l-serine, l-cysteine and l-proline, the other compounds were predicted to be permeable across the blood brain barrier. These results indicate the brain glucose uptake stimulatory and neuroprotective effect of V. amygdalina.
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Affiliation(s)
- Ochuko L Erukainure
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
- Nutrition and Toxicology Division, Federal Institute of Industrial Research, Oshodi, Lagos, Nigeria
| | - Olajumoke A Oyebode
- Department of Biochemistry, School of Life Sciences, 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
| | - Neil A Koorbanally
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
| | - Md Shahidul Islam
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa.
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Omojokun OS, Famurewa AJ, Jaiyeoba OA, Oboh G, Agbebi OJ. Alkaloid extracts from Bitter leaf ( Vernonia amygdalina) and Black nightshade (Solanum nigrum) inhibit phosphodiesterase-5, arginase activities and oxidative stress in rats penile tissue. J Food Biochem 2019; 43:e12889. [PMID: 31353618 DOI: 10.1111/jfbc.12889] [Citation(s) in RCA: 4] [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: 10/02/2018] [Revised: 03/20/2019] [Accepted: 04/11/2019] [Indexed: 12/11/2022]
Abstract
The erectogenic potential of alkaloids extracted from Bitter leaf (Vernonia amygdalina) and Black nightshade (Solanum nigrum) was investigated in this study. Fresh leaves obtained from Bitter leaf and Black night shade were air-dried, pulverized, and extracted for alkaloids. The inhibitory potential of the alkaloid extracts on arginase and phosphodiesterase-5 (PDE-5) activities in rats penile tissue was determined in vitro. The antioxidant properties were also evaluated and the constituent alkaloids quantified using GC-MS. The alkaloid extracts inhibited arginase (0-30.51 μg/ml) and PDE-5 (0-133.69 μg/ml) activities in a concentration-dependent pattern. Similarly, the alkaloid extracts inhibited Fe2+ -induced lipid peroxidation in rats penile tissues, scavenged DPPH, OH, and NO radicals as a function of concentration. GC-MS characterization revealed over 20 alkaloid compounds. The inhibition of PDE-5-, arginase-, pro-oxidant-induced lipid peroxidative-, and free radicals-scavenging activities by the alkaloids is suggestive of putative mechanisms underlying their therapeutic use for managing erectile dysfunction in folklore medicine. PRACTICAL APPLICATIONS: Alkaloids extracted from Black nightshade (Solanum nigrum) and Bitter leaf (Vernonia amygdalina) were characterized and investigated by standard procedures for inhibitory action against key erectile dysfunction-linked enzymes and antioxidant activity. The alkaloids inhibited erectile dysfunction-linked enzymes (arginase and PDE-5) and showed considerable antioxidant activity in a concentration-dependent manner. In view of this, we suggest the application of these results in the development of erectile dysfunction drugs in the pharmaceutical industry, with probable minimal or no adverse effect.
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Affiliation(s)
- Olasunkanmi S Omojokun
- Biochemistry Unit, Department of Physical & Chemical Sciences, Elizade University, Ilara-mokin, Nigeria.,Functional Foods, Nutraceuticals and Phytomedicine Unit, Department of Biochemistry, The Federal University of Technology, Akure, Nigeria
| | - Akindele J Famurewa
- Biochemistry Unit, Department of Physical & Chemical Sciences, Elizade University, Ilara-mokin, Nigeria
| | - Oluwademilade A Jaiyeoba
- Biochemistry Unit, Department of Physical & Chemical Sciences, Elizade University, Ilara-mokin, Nigeria
| | - Ganiyu Oboh
- Functional Foods, Nutraceuticals and Phytomedicine Unit, Department of Biochemistry, The Federal University of Technology, Akure, Nigeria
| | - Oluwaseun J Agbebi
- Functional Foods, Nutraceuticals and Phytomedicine Unit, Department of Biochemistry, The Federal University of Technology, Akure, Nigeria.,Laboratory Department, Environmental Resources Managers Limited, Lekki, Nigeria
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Madzuki IN, Lau SF, Abdullah R, Mohd Ishak NI, Mohamed S. Vernonia amygdalina inhibited osteoarthritis development by anti-inflammatory and anticollagenase pathways in cartilage explant and osteoarthritis-induced rat model. Phytother Res 2019; 33:1784-1793. [PMID: 31033070 DOI: 10.1002/ptr.6366] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 08/01/2018] [Revised: 03/15/2019] [Accepted: 03/16/2019] [Indexed: 01/05/2023]
Abstract
Vernonia amygdalina (VA) is a medicinal tropical herb for diabetes and malaria and believed to be beneficial for joint pains. The antiosteorthritis effects of VA leaf in cartilage explant assays and on postmenopausal osteoarthritis (OA) rat model were investigated. The VA reduced the proteoglycan and nitric oxide release from the cartilage explants with interleukin 1β (IL-1β) stimulation. For the preclinical investigation, ovariectomized (OVX) female rats were grouped (n = 8) into nontreated OA, OA + diclofenac (5 mg/kg), OA + VA extract (150 and 300 mg/kg), and healthy sham control. Monosodium iodoacetate was injected into the knee joints to accelerate OA development. After 8 weeks, the macroscopic, microscopic, and histological images showed that the OA rats treated with VA 300 mg/kg and diclofenac had significantly reduced cartilage erosions and osteophytes unlike the control OA rats. The extract significantly down-regulated the inflammatory prostaglandin E2, nuclear factor κβ, IL-1β, ADAMTS-5, collagen type 10α1, and caspase3 in the OVX-OA rats. It up-regulated the anti-inflammatory IL-10 and collagen type 2α1 mRNA expressions, besides reducing serum collagenases (MMP-3 and MMP-13) and collagen type II degradation biomarker (CTX-II) levels in these rats. The VA (containing various caffeoyl-quinic acids, flavanone-O-rutinoside, luteolin, apigenin derivative and vernonioside D) suppressed inflammation, pain, collagenases as well as cartilage degradation, and improved cartilage matrix synthesis to prevent OA.
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Affiliation(s)
- Iffah Nadhira Madzuki
- Institute of Bioscience, Universiti Putra Malaysia (UPM), Serdang, Malaysia.,Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), Padang Besar, Malaysia
| | - Seng Fong Lau
- Faculty of Veterinary Medicine, Universiti Putra Malaysia (UPM), Serdang, Malaysia
| | - Rasedee Abdullah
- Faculty of Veterinary Medicine, Universiti Putra Malaysia (UPM), Serdang, Malaysia
| | | | - Suhaila Mohamed
- Institute of Bioscience, Universiti Putra Malaysia (UPM), Serdang, Malaysia
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Erukainure OL, Chukwuma CI, Sanni O, Matsabisa MG, Islam MS. Histochemistry, phenolic content, antioxidant, and anti-diabetic activities of Vernonia amygdalina leaf extract. J Food Biochem 2018; 43:e12737. [PMID: 31353661 DOI: 10.1111/jfbc.12737] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 09/20/2018] [Revised: 10/21/2018] [Accepted: 10/31/2018] [Indexed: 12/13/2022]
Abstract
Vernonia amygdalina leaves were investigated for their histochemical properties and antidiabetic activities. Histochemical analysis of the leaf revealed distributions of acidic lipid, mucilage, and pectin, lipids, polyphenols, and alkaloids at the mid rib, glandular trichome, and epidermis. HPLC analysis of the leaves hot water infusion revealed the presence of quercetin and (-)-epi-catechin. The infusion had significant (p < 0.05) 2,2'-diphenyl-1-picrylhydrazyl scavenging activity and ferric reducing antioxidant power. Ex vivo antioxidative analysis revealed the ability of the infusion to increase glutathione level, superoxide dismutase, and catalase activities, while concomitantly depleting malondialdehyde level and DNA fragmentation in Fe2+ -induced hepatic injury. The infusion showed significant (p < 0.05) inhibitory activity against α-glucosidase and pancreatic lipase. It also inhibited intestinal glucose absorption and enhanced muscle glucose uptake, respectively. The ability of the infusion to abate oxidative stress, DNA fragmentation and stimulate muscle glucose uptake may suggest the antioxidative, anti-apoptotic, and insulin-sensitizing activity of V. amygdalina. PRACTICAL APPLICATIONS: Vernonia amygdalina (bitter leaf) is among the common leafy vegetables in West Africa reported for its various medicinal and nutritional properties. It is utilized as a food ingredient as well as supplement for the treatment and management of type 2 diabetes (T2D). Its ability to inhibit intestinal glucose absorption, enhance muscle glucose uptake, and protect against hepatic oxidative stress gives more credence to its reported antidiabetic properties. Being a common leafy vegetable, V. amygdalina can be a cheap source of nutraceutical for the treatment and management of T2D and its complications.
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Affiliation(s)
- Ochuko L Erukainure
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Durban, South Africa.,Nutrition and Toxicology Division, Federal Institute of Industrial Research, Lagos, Nigeria
| | - Chika I Chukwuma
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Durban, South Africa.,Department of Pharmacology, University of the Free State, Bloemfontein, South Africa
| | - Olakunle Sanni
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Durban, South Africa
| | | | - Md Shahidul Islam
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Durban, South Africa
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Ohwofasa IT, Okwena Pondei J. Synergistic Effect of the Extracts of <i> Vernonia amygdalina</i> and <i>Solenostemon monostachyus</i> on Gram-negative Bacteria. Pak J Biol Sci 2018; 21:369-375. [PMID: 30417997 DOI: 10.3923/pjbs.2018.369.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND OBJECTIVES Herbal medicines are getting more importance in the treatment of infections ailments because most of the synthetic drugs have side effects. A large proportion of the developing countries populations depend on herbal remedy for their physical and psychological health needs depend. Hence, the anti-bacterial activity of the mixture of the extracts of Solenostemon monostachyus and Vernonia amygdalina, common medicinal plants use in Africa, Asia and Europe on some Gram-negative bacteria was investigated. MATERIALS AND METHODS The plants that were cultivated in a well-drained soil and the bacteria, Salmonella typhii, Escherichi coli and Enterobacter aerogenes freshly isolated from clinical samples were used for this study. The plant leaves were grounded separately into a powder and analyzed quantitatively for phytochemical composition and extracted using acetone. Similarly, equal volume of the two plants was homogenized. The sensitivity of the bacteria isolates was performed using disk diffusion method and the antimicrobial activity was determined by measuring the diameter zones of inhibition and for the sensitive measurement (inhibitory zones >20) and resistant measurement (inhibitory zones <17). RESULTS Analysis of the plants revealed their phytochemical composition. The plant's extracts had high diameter zones of inhibition at the higher concentrations and the concoction treatment was more sensitive. In V. amygdalina, the zone of inhibition varied significantly between S. typhi and E. aerogenes (p<0.05, F = 7.2) and between E. coli and E. aerogenes (p<0.05, F = 6.7), while in S. monostachyus, it varid significantly between S. typhi and E. coli (p<0.05, F = 9.2) and between E. coli and E. aerogenes (p<0.05, F = 5.8). CONCLUSION These plants were readily available at no cost therefore, they could be exploited to provide novel compounds that may be used as starting materials for the production of drug that can obliterate resistance bacteria.
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Tekou FA, Kuate D, Nguekouo PT, Woumbo CY, Oben JE. Effect of cooking treatments on the phytochemical composition and antidiabetic potential of Vernonia amygdalina. Food Sci Nutr 2018; 6:1684-1691. [PMID: 30258613 PMCID: PMC6145230 DOI: 10.1002/fsn3.732] [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: 03/15/2018] [Revised: 06/10/2018] [Accepted: 06/13/2018] [Indexed: 01/10/2023] Open
Abstract
The present study aimed at evaluating the effects of domestic culinary treatment on phytochemical contents (phenolic content and dietary fiber), and the antidiabetic potential of Vernonia amygdalina in type 2 diabetic rats. The culinary forms implied boiling leaves of V. amygdalina directly and eliminating the leaves' bitterness before boiling. Seventy wistar rats were artificially induced with type 2 diabetes using streptozotocin and high-fat diet. They then received by oral intubation powders of different culinary forms of leaves extract or suspensions of V. amygdalina at a dose of 500 mg /kg for a period of 4 weeks. The crude fiber, total phenol contents and the DPPH scavenging ability of these culinary forms were also measured and the results showed that values of these parameters were higher in the unwashed form than the washed form. The washed and unwashed forms of V. amygdalina significantly reduced (p < 0.05) the blood glucose, the total cholesterol, triglyceride, transaminases, urea and creatine levels. Aqueous extract has the highest ability to reduce the blood glucose level (75.76%) followed by the unwashed form (61.17%) which was greater than that of the washed form. Also, these forms significantly increased serum HDL cholesterol and total protein level, with the highest activity obtained with the unwashed form. Washing the V. amygdalina leaves (that consists of multiple trituration of leaves with water) contributes to the reduction of antidiabetic and antioxidant properties.
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Affiliation(s)
- Florian Amel Tekou
- Faculty of ScienceDepartment of BiochemistryLaboratory of Medicinal Plants BiochemistryFood Science and NutritionUniversity of DschangDschangCameroon
- Faculty of ScienceDepartment of BiochemistryLaboratory of Nutrition and Nutritional BiochemistryUniversity of Yaoundé 1YaoundéCameroon
| | - Dieudonne Kuate
- Faculty of ScienceDepartment of BiochemistryLaboratory of Medicinal Plants BiochemistryFood Science and NutritionUniversity of DschangDschangCameroon
- Faculty of ScienceDepartment of BiochemistryLaboratory of Nutrition and Nutritional BiochemistryUniversity of Yaoundé 1YaoundéCameroon
| | - Philippe Tekem Nguekouo
- Faculty of ScienceDepartment of BiochemistryLaboratory of Medicinal Plants BiochemistryFood Science and NutritionUniversity of DschangDschangCameroon
- Faculty of ScienceDepartment of BiochemistryLaboratory of Nutrition and Nutritional BiochemistryUniversity of Yaoundé 1YaoundéCameroon
| | - Cerile Ypolyte Woumbo
- Faculty of ScienceDepartment of BiochemistryLaboratory of Medicinal Plants BiochemistryFood Science and NutritionUniversity of DschangDschangCameroon
| | - Julius Enyong Oben
- Faculty of ScienceDepartment of BiochemistryLaboratory of Nutrition and Nutritional BiochemistryUniversity of Yaoundé 1YaoundéCameroon
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Adefisayo MA, Akomolafe RO, Akinsomisoye OS, Alabi QK, Ogundipe L, Omole JG, Olamilosoye KP. Protective Effects of Methanol Extract of Vernonia amygdalina ( del.) Leaf on Aspirin-Induced Gastric Ulceration and Oxidative Mucosal Damage in a Rat Model of Gastric Injury. Dose Response 2018; 16:1559325818785087. [PMID: 30013459 PMCID: PMC6043926 DOI: 10.1177/1559325818785087] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 03/29/2018] [Revised: 05/23/2018] [Accepted: 05/29/2018] [Indexed: 11/17/2022] Open
Abstract
This study investigated the quantitative polyphenolic constituents and gastroprotective effects of methanol extract of Vernonia amygdalina leaf (MEVA) against aspirin-induced gastric ulcer in rats. Ulceration was induced by 3 days’ oral administration of aspirin (150 mg/kg body weight). Wistar rats were pretreated with cimetidine (reference drug) at a dose of 100 mg/kg body weight and MEVA at 200, 300, and 400 mg/kg body weight once daily for 28 days prior to ulcer induction. At the end of the experiment, gastric secretions, antioxidant status, and histopathological alteration were evaluated. We observed that the significantly increased ulcer index, gastric volume, free and total acidity, malondialdehyde level, and pepsin activity were effectively reduced following treatment with 200 and 300 mg/kg MEVA. The extract also markedly attenuated the reduced activity of superoxide dismutase and reduced glutathione level as well as pH and mucin content in the ulcerated rats. Administration of the extract also significantly attenuates necrosis of the stomach tissue of the ulcerated rats. The results suggested that the MEVA leaf, preferably at 200 and 300 mg/kg body weight, ameliorated aspirin-induced gastric ulceration via antioxidative and H2 receptor antagonist.
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Affiliation(s)
- Modinat A Adefisayo
- Department of Physiology, Faculty of Basic Medical Sciences, University of Medical Sciences, Ondo State, Nigeria.,Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Rufus O Akomolafe
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Olumide S Akinsomisoye
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Quadri K Alabi
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria.,Department of Haematology and Blood Transfusion, Faculty of Basic Medical Sciences, College of Medicine, Afe Babalola University, Ado Ekiti, Nigeria
| | - Laofe Ogundipe
- Department of Public Health and Community Medicine, Afe Babalola University, Ado Ekiti, Nigeria
| | - Joseph G Omole
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Kehinde P Olamilosoye
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
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Ekeleme-Egedigwe CA, Ijeh II, Okafor PN. Modulatory effects of dietary supplementation by Vernonia amygdalina on high-fat-diet-induced obesity in Wistar rats. Acta Sci Pol Technol Aliment 2018; 16:431-442. [PMID: 29241322 DOI: 10.17306/j.afs.0504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Obesity is a growing public health problem arising from energy imbalance. The effect of 10% dietary incorporation of Vernonia amygdalina (VA) leaves into high-fat diets on some biological markers of adiposity and dyslipidaemia was investigated. METHODS Experimental diets consisted of the following – CD (control diet); HFD (high-fat diet); and HFD- VA (HFD containing 10% Vernonia amygdalina leaves) supplementation. Fifteen male Wistar rats were randomly divided into three groups of five animals each. After twelve weeks of feeding, serum lipid profile, blood glucose concentrations, body weight, adiposity index, feed intake, fecal loss and relative organ weight were investigated. RESULTS Vernonia amygdalina (VA) inhibited HFD-induced weight gain and adiposity in rats. HFD-induced obese rats showed a significant increase in the levels of serum TG and TC compared to rats on a normal diet. However, the levels of serum TG, TC, LDL-C in HFDVA rats reduced significantly relative to the levels in HFD rats. Our results indicate that HFDVA reversed fatty infiltration leading to decreased body weight and fat tissue mass in the rats. CONCLUSIONS These results suggested that incorporation of Vernonia amygdalina into high-fat diets may have therapeutic potentials for obesity and related metabolic disorders. Further studies to explore its possibility as an alternative pharmacologic agent to treat obesity are warranted.
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Affiliation(s)
| | - Ifeoma I Ijeh
- Department of Biochemistry, College of Natural Sciences, Michael Okpara University of Agriculture Umudike, Nigeria
| | - Polycarp N Okafor
- Department of Biochemistry, College of Natural Sciences, Michael Okpara University of Agriculture Umudike, Nigeria
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Adefisayo MA, Akomolafe RO, Akinsomisoye SO, Alabi QK, Ogundipe OL, Omole JG, Olamilosoye KP. Gastro-protective effect of methanol extract of Vernonia amygdalina (del.) leaf on aspirin-induced gastric ulcer in Wistar rats. Toxicol Rep 2017; 4:625-633. [PMID: 29657922 PMCID: PMC5897319 DOI: 10.1016/j.toxrep.2017.11.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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: 07/11/2017] [Revised: 11/10/2017] [Accepted: 11/13/2017] [Indexed: 02/07/2023] Open
Abstract
This study investigated the protective effects of methanol extract of Vernonia amygdalina leaf (MEVA) on aspirin induced gastric ulcer in rats. Thirty Wistar rats, 150-200 g were divided into six groups as follows: Group 1 (control) rats received 2 mL/kg of propylene glycol for 28 consecutive days. Group 2 (Ulcer Control) received 150 mg/kg/day of aspirin suspended in 3 mL of 1% carboxymethylcellulose in water orally for 3 consecutive days during which the rats were fasted for the induction of ulcer. Group 3 received cimetidine at 100 mg/kg/day orally for 28 consecutive days and thereafter treated as group 2. Groups 4, 5 and 6 received MEVA orally at 200, 300 and 400 mg/kg/day respectively for 28 consecutive days and thereafter were treated with aspirin as group 2. All the animals were sacrifice at the end of the study to determine the gastric pH, gastric acidity, gastric ulcer score, haematological indices, superoxide dismutase (SOD) activity, reduced glutathione (GSH) and Lipid peroxidation (LPO) levels. The result showed that aspirin significantly (p < 0.05) increased gastric ulcer score and index, decreased gastric pH, gastric acidity, SOD activity, GSH level as well as increased LPO level. It induced significant necrosis of the stomach tissue. Administration of MEVA significantly (p < 0.05) increased gastric pH, but decreased gastric acid secretion and reversed alteration of haematological parameters. It also significantly (p < 0.05) increased SOD activity, GSH level and decreased LPO level. The results suggest that Vernonia amygdalina possesses gastro-protective properties against aspirin-induced gastric ulcer.
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Affiliation(s)
- Modinat A. Adefisayo
- Department of Physiology, Faculty of Basic Medical Sciences, University of Medical Sciences, Ondo State, Nigeria
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Rufus O. Akomolafe
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Stephen O. Akinsomisoye
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Quadri K. Alabi
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
- Department of Hematology and Blood Transfusion, Faculty of Basic Medical Sciences, College of Medicine, Afe Babalola University, Ado Ekiti, Ekiti State, Nigeria
| | - Olaofe L. Ogundipe
- Department of Public Health and Community Medicine, Afe Babalola University, Ado Ekiti, Ekiti State, Nigeria
| | - Joseph G. Omole
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Kehinde P. Olamilosoye
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
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Onasanwo SA, Oyebanjo OT, Ajayi AM, Olubori MA. Anti-nociceptive and anti-inflammatory potentials of Vernoniaamygdalina leaf extract via reductions of leucocyte migration and lipid peroxidation. J Intercult Ethnopharmacol 2017; 6:192-198. [PMID: 28512601 PMCID: PMC5429079 DOI: 10.5455/jice.20170330010610] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 11/21/2016] [Accepted: 03/09/2017] [Indexed: 11/23/2022]
Abstract
Background: Vernonia amygdalina is well known as a medicinal plant in folk medicine as antidiabetic, anthelmintic, antimalarial, laxative/purgative, and expectorant among others. Aim: This study was conducted to investigate the antinociceptive and anti-inflammatory effects of V. amygdalina. Materials and Methods: Methanol extract of V. amygdalina leaf (MEVA) was evaluated for antinociceptive effect and possible mechanisms of action in the presence of naloxone (1 mg/kg), atropine (2 mg/kg), and prazosin (1 mg/kg) using acetic acid writhing test in mice. The anti-inflammatory effect was evaluated in carrageenan hind paw edema and carrageenan air pouch models. Protein concentration, malondialdehyde (MDA), glutathione (GSH), and superoxide dismutase (SOD) assays were carried out for its antioxidative activities in inflammation. Hematoxylin and eosin staining was used to assess the level of inflammation. Results: From the acetic acid writhing test results, MEVA (50,100 mg/kg) showed significant antinociceptive effect. Naloxone, atropine and prazosin did not significantly reverse the antinociceptive effect of MEVA (50 mg/kg). MEVA (50, 100, and 200 mg/kg) showed dose-dependent inhibition of edema (41.4, 63.0, and 68.6%) at 4 h post-carrageenan injection. In the carrageenan air pouch model, MEVA (200 mg/kg) significantly (P < 0.05) reduced infiltrating leukocytes, protein concentration and MDA levels, while GSH and SOD were unaffected. The histological study showed a reduction in the infiltration of inflammatory cells in MEVA-treated groups. Conclusion: V. amygdalina showed antinociceptive activity and anti-inflammatory effect via reductions of leukocyte migration and lipid peroxidation.
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Affiliation(s)
- Samuel Adetunji Onasanwo
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Oyetola Tolulope Oyebanjo
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Abayomi Mayowa Ajayi
- Department of Pharmacology and Therapeutics, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Mujeedat Adebukola Olubori
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
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Iwo MI, Sjahlim SL, Rahmawati SF. Effect of Vernonia amygdalina Del. Leaf Ethanolic Extract on Intoxicated Male Wistar Rats Liver. Sci Pharm 2017; 85:E16. [PMID: 28333116 PMCID: PMC5489920 DOI: 10.3390/scipharm85020016] [Citation(s) in RCA: 5] [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: 12/29/2016] [Revised: 03/16/2017] [Accepted: 03/16/2017] [Indexed: 11/17/2022] Open
Abstract
Vernonia amygdalina has been shown to have antioxidant activity, and is also expected to have hepatoprotective activity. This study was conducted to study the effect of V. amygdalina ethanol extracts on intoxicated rat livers. Fresh leaves were extracted in ethanol, and the hepatoprotective activity was tested on male Wistar rats induced with a combination of isoniazid (INH) and rifampicin. Parameters observed were the activity of the enzyme alanine transferase (ALT), serum albumin levels, liver index, and histopathological of the rat liver. The results showed that 50 and 100 mg/kg rat body weight of V. amygdalina ethanol extracts could prevent liver intoxication, starting on day 14. Based on serum albumin concentrations and ALT activity, the high dose extract (100 mg/kg) was more potent as a hepatoprotective agent compared to the extract at a low dose (50 mg/kg). The group of rats treated with a high dose extract showed normal liver index compared to the positive control. Through histology examination, the liver of rats treated with a high dose extract (100 mg/kg) showed minimal liver cell structure damage, and showed similar patterns to the normal rat. Based on these results, it can be concluded that V. amygdalina ethanol extracts can be used to protect the liver in a combination of INH and rifampicin as antituberculosis treatment.
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Affiliation(s)
- Maria Immaculata Iwo
- Pharmacology Clinical Pharmacy Research Group, School of Pharmacy, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia.
- Biotechnology Biomedical Research Center, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia..
| | - Sergia Louisa Sjahlim
- Pharmacology Clinical Pharmacy Research Group, School of Pharmacy, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia.
| | - Siti Farah Rahmawati
- Pharmacology Clinical Pharmacy Research Group, School of Pharmacy, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia.
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Okwuzu JO, Odeiga P, AdetoroOtubanjo O, Ezechi OC. Cytotoxicity testing of aqueous extract of bitter leaf ( Vernonia amygdalina Del) and sniper 1000EC (2,3 dichlorovinyl dimethyl phosphate) using the Alium cepa test. Afr Health Sci 2017; 17:147-153. [PMID: 29026388 DOI: 10.4314/ahs.v17i1.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The unrefined nature of the herbal preparations from Vernonia amygdalina (VA) and toxicity potentials of Sniper may both have severe consequences on the biochemical and genetic systems. OBJECTIVES To assess the microscopic and macroscopic effects of these substances. METHODS VA leafs and Sniper were prepared and dissolved in distilled water to give different concentrations. Series of baseline tests were carried out to establish concentration range for root growth. Series of twelve onion bulbs of three per series was prepared, with a series of three onion bulbs serving as control. Chromosomal aberrations were statistically analysed using chi- squared test. Root bundle mean length was obtained after 96 hours and EC50 values at 95% confidence interval was determined from a plot of root length against sample concentrations using Microsoft Excel software. RESULTS Total cytotoxic effect was induced by 2% sniper and 70% VA. EC50 for VA and sniper were 33.07 and 0.346 respectively. The two substances induced chromosomal aberrations and the effect was concentration dependent. CONCLUSION There are risks of these widely used substances for therapeutic and environmental purposes.
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Affiliation(s)
| | - Peter Odeiga
- Department of cell biology and genetics, University of Lagos, Akoka, Yaba Lagos
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Egedigwe CA, Ijeh II, Okafor PN, Ejike CECC. Aqueous and methanol extracts of Vernonia amygdalina leaves exert their anti-obesity effects through the modulation of appetite-regulatory hormones. Pharm Biol 2016; 54:3232-3236. [PMID: 27569644 DOI: 10.1080/13880209.2016.1216135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 02/09/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT Aqueous and methanol extracts of Vernonia amygdalina Del. (Asteraceae) (AEVA and MEVA, respectively) leaves are reported to possess anti-obesity properties, exerted through unknown mechanisms. OBJECTIVE This study investigated the effects of AEVA and MEVA on relevant hormones and enzymes in high-fat diet (HFD)-induced obese rats. MATERIALS AND METHODS Forty-two Wistar rats were placed into seven groups. The test groups received 100 mg/kg.bw AEVA (AEVA100), 500 mg/kg.bw AEVA (AEVA500), 50 mg/kg.bw MEVA (MEVA50) and 200 mg/kg.bw MEVA (MEVA200), respectively. The positive control (PC) group received 20 mg/kg.bw Orlistat, while the negative control (NeC) and normal control (NoC) groups received distilled water. The extracts were given orally daily for 12 weeks. Thereafter, the concentrations/activities of relevant hormones/enzymes in their sera were determined. RESULTS Insulin concentrations (ng/ml) in the test groups ranged from 1.08 ± 0.01 (AEVA100) to 1.09 ± 0.01 (AEVA500). They were all similar (p > .05) to the NoC and PC controls. Leptin concentrations (pg/ml) in the test rats ranged from 0.02 ± 0.01 (AEVA500) to 0.03 ± 0.00 (MEVA50), and were all similar to the NoC group. The ghrelin concentrations of only the AEVA500 and MEVA200 groups were similar to those of the PC group (0.10 ± 0.01 pg/ml). AEVA100 and MEVA200 resulted in adiponectin concentrations (ng/ml) of the rats (0.27 ± 0.04 and 0.28 ± 0.04 respectively) that were similar to the PC group. The activities of lipoprotein lipase and the concentrations of intestinal amylase in the test rats were similar to values obtained for the control groups. CONCLUSION Appetite regulation may be the mechanism through which the weight-loss properties of AEVA and MEVA are expressed.
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Affiliation(s)
- Chima A Egedigwe
- a Department of Biochemistry , College of Natural Sciences, Michael Okpara University of Agriculture , Umudike , Abia State , Nigeria
- b Department of Chemistry/Biochemistry/Molecular Biology, Faculty of Science and Technology , Federal University Ndufu-Alike , Ikwo , Ebonyi State , Nigeria
| | - Ifeoma I Ijeh
- a Department of Biochemistry , College of Natural Sciences, Michael Okpara University of Agriculture , Umudike , Abia State , Nigeria
| | - Polycarp N Okafor
- a Department of Biochemistry , College of Natural Sciences, Michael Okpara University of Agriculture , Umudike , Abia State , Nigeria
| | - Chukwunonso E C C Ejike
- a Department of Biochemistry , College of Natural Sciences, Michael Okpara University of Agriculture , Umudike , Abia State , Nigeria
- c Department of Medical Biochemistry, Faculty of Basic Medical Sciences , Federal University Ndufu-Alike , Ikwo , Ebonyi State , Nigeria
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Abstract
Background: Vernonia amygdalina, commonly called bitter-leaf, is widely consumed in many parts of Africa, and Nigeria, in particular. The leaf extract has been reported to have antimicrobial, anti-plasmodial, anti-helminthic, as well as prebiotic properties, but its immuno-modulatory effects have not been well-studied, neither have the prebiotics been identified. This study evaluated the immuno-modulatory properties of the aqueous leaf extract and identified the prebiotic components. Methods: The immuno-modulatory potential was evaluated by monitoring the effects of oral administration of the extract on immunological, haematological and lipid profiles of Rattus norvegicus, while the prebiotic components were identified by thin layer chromatography (TLC), following liquid-liquid fractionation of the extract. Results: Consumption of the extract caused significant increases in CD4+-, white blood cell-, total lymphocyte- and high density lipid (HDL) counts; decreases in low density lipid (LDL) and triglycerides and no significant effect on haemoglobin (Hb) and packed cell volume (PCV) in the blood of test animals. The water-soluble fraction of the extract contained most of the phyto-constituents of the extract and Thin Layer Chromatographic analysis of the fraction revealed the presence of fructo-oligosaccharide and galacto-oligosaccharide prebiotics. Conclusion: The results from this study have shown that the aqueous leaf extract of V. amygdalina has positive immune-modulatory and haematologic effects and contains some important prebiotic compounds.
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Affiliation(s)
- Ezeonu Im
- Department of Microbiology, Faculty of Biological Sciences, University of Nigeria, Nsukka
| | - Asuquo Ae
- Department of Microbiology, Faculty of Biological Sciences, University of Nigeria, Nsukka
| | - Ukwah Bn
- Department of Medical Laboratory Sciences, Faculty of Health Sciences, Ebonyi State University, Abakaliki
| | - Ukoha Po
- Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, University of Nigeria, Nsukka
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Howard CB, McDowell R, Feleke K, Deer E, Stamps S, Thames E, Singh V, Pervin S. Chemotherapeutic Vulnerability of Triple-negative Breast Cancer Cell-derived Tumors to Pretreatment with Vernonia amygdalina Aqueous Extracts. Anticancer Res 2016; 36:3933-3943. [PMID: 27466496 PMCID: PMC5226471] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 06/13/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Unresponsive to most clinical therapies, triple-negative breast cancer (TNBC) is the dominant biological cause of population-based racioethnic disparities in breast cancer mortality in the United States. We report the chemotherapeutic vulnerability of TNBC cells and stem cell-derived tumors to Vernonia amygdalina aqueous leaf extracts (VA extracts). VA extracts arrest cell proliferation and induce apoptosis in vitro and inhibit growth of implanted tumors and show chemo-preventive efficacy in vivo. MATERIALS AND METHODS H(RAS) cells and MDA-MB-468 cells were subcutaneously implanted into nude mice with or without pretreatment with VA extracts before chemotherapeutic treatment with VA extracts and/or paclitaxel to evaluate their ability to inhibit tumor growth. RESULTS The most significant reduction in tumor volume was observed in the MDA-MB-468 cell-induced tumors following VA extract pre-treatment compared to those from HRAS cell implantation. CONCLUSION VA extracts induce apoptosis, exhibit additive effects, inhibit tumor growth and display chemo-preventive actions against TNBCs.
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Affiliation(s)
- Carolyn B Howard
- Department of Biology, College of Science Engineering and Technology, Jackson State University, Jackson, MS, U.S.A.
| | - Roderick McDowell
- Department of Biology, College of Science Engineering and Technology, Jackson State University, Jackson, MS, U.S.A
| | - Kidus Feleke
- Department of Biology, College of Science Engineering and Technology, Jackson State University, Jackson, MS, U.S.A
| | - Evangeline Deer
- Department of Biology, College of Science Engineering and Technology, Jackson State University, Jackson, MS, U.S.A
| | - Symone Stamps
- Department of Biology, College of Science Engineering and Technology, Jackson State University, Jackson, MS, U.S.A
| | - Easter Thames
- Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, U.S.A
| | - Vikash Singh
- Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, U.S.A
| | - Shehla Pervin
- Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, U.S.A
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Shittu OB, Ajayi OL, Bankole SO, Popoola TOS. Intestinal ameliorative effects of traditional Ogi-tutu, Vernonia amygdalina and Psidium guajava in mice infected with Vibrio cholera. Afr Health Sci 2016; 16:620-8. [PMID: 27605980 PMCID: PMC4994574 DOI: 10.4314/ahs.v16i2.33] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Cholera, a severe acute watery diarrhea caused by Vibrio cholerae is endemic in Nigeria with most cases occurring in the rural areas. In South West Nigeria, some individuals resort to alternative treatments such as Ogi-tutu, Psidium guajava and Vernonia amygdalina during infections. The effectiveness of these alternatives in the prevention and treatment of V. cholerae infection requires experimental investigation. OBJECTIVE This study was designed to investigate the ameliorative effects of Ogi-tutu, Vernonia amygdalina and Psidium guajava on intestinal histopathology of experimental mice infected with V. cholerae. METHODS Preliminary investigation of in vitro vibriocidal activities of these alternatives were carried out using agar cup diffusion assay. For ameliorative effects, adult mice were inoculated with 100 µl (106 cells) of Vibrio cholerae and dosed at 0 h (immediate prevention) and 4 h (treatment of infection) and their intestines were histopathologically evaluated. RESULTS The histopathological changes were the same irrespective of the treated groups, but the lesions varied in extent and severity. The ameliorative effects in decreasing order were V. amygdalina > P. guajava > Ogi-tutu. CONCLUSION V. amygdalina gave the best ameliorative effects in the prevention and treatment of V. cholerae infection.
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Affiliation(s)
- Olufunke B Shittu
- Department of Microbiology, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - Olusola L Ajayi
- Department of Veterinary Pathology, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta, Nigeria
| | - Samuel O Bankole
- Department of Pure and Applied Zoology, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - Temitope OS Popoola
- Department of Microbiology, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
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Omoregie ES, Pal A. Antiplasmodial, antioxidant and immunomodulatory activities of ethanol extract of Vernonia amygdalina del. Leaf in Swiss mice. Avicenna J Phytomed 2016; 6:236-47. [PMID: 27222837 PMCID: PMC4877969] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Vernonia amygdalina (V. amygdalina) leaf is locally employed in the Southern region of Nigeria in the treatment of malaria infection. This study evaluated the in vivo antiplasmodial, antioxidant and immunomodulatory effect of ethanol extract of V. amygdalina leaf. MATERIALS AND METHODS The active principles of the dried leaf were extracted with ethanol. For quality validation, chemical finger-print of the extract was performed through high performance thin layer chromatography (HPTLC). The extract was assessed for antiplasmodial activity by the standard four-day suppressive test on Plasmodium berghei (ANKA) infected male Swiss mice (six weeks old) placed into five groups of six animals each. RESULT The absorption spectra from the HPTLC revealed several peaks suggesting presence of some bioactive compounds. Results from the in vivo study showed that the ethanol extract of the plant leaf was significantly active against P. berghei in a dose-dependent manner with the minimum and maximum activity observed in the mice treated orally with 100mg/kg (% inhibition of 23.7%) and 1000 mg/kg (% inhibition of 82.3 %) of the extract, respectively, on day four of the study. There was also a dose-dependent decrease (p<0.05) in some oxidative stress indices including nitric oxide and lipid peroxidation levels in the extract treated groups as against the non-treated infected group which had high levels of these parameters. The pro-inflammatory cytokines (TNF-α and IFN-ɣ) levels were also considerably low in the extract treated groups relative to the non-treated infected group. CONCLUSION The results suggest that ethanol extract of V. amygdalina leaf was active, with some immunomodulatory effect, against P . berghei infection.
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Affiliation(s)
- Ehimwenma Sheena Omoregie
- Department of Biochemistry, Faculty of Life Sciences, University of Benin, PMB 1154, Benin City, Nigeria ,Corresponding Author: Tel: +2348023397020,
| | - Anirban Pal
- In vivo Animal Testing Facility, Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, India
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Momoh MA, Muhamed U, Agboke AA, Akpabio EI, Osonwa UE. Immunological effect of aqueous extract of Vernonia amygdalina and a known immune booster called immunace(®) and their admixtures on HIV/AIDS clients: a comparative study. Asian Pac J Trop Biomed 2015; 2:181-4. [PMID: 23569894 DOI: 10.1016/s2221-1691(12)60038-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 08/15/2011] [Revised: 09/07/2011] [Accepted: 09/28/2011] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE To investigate the immunological effect of Vernonia amygdalina (V. amygdalina) leaf extract and immunace(®) on HIV infected patients taking highly active antiretroviral therapy. METHODS Fresh V. amygdalina leaves were collected within Nsukka area in Enugu State. The leaves were rinsed with distilled water. Two handful of cleaned fresh leaves were soaked in 200 mL water and squeezed gently by hand to a mixture. Clients were divided into four groups and each group was given different combination. They took the medication for four weeks. The immune effect was tested against marketed immune booster in some retroviral clients. RESULTS The mean absolute CD4 count was increased in the client who took the extract or supplement. And the clients who took both the extract and supplement had a greater increase in the CD4 count. The increased CD4 was significant as compared with the control group (P<0.05). The skin rashes were also improved in the entire groups. CONCLUSIONS It can be concluded that the aqueous extract of V. amygdalina and immunace or both have immunological effect on HIV infected patients. Therefore, we suggest that the V. amygdalina extract or immunace or both could be used as adjuvant in the management of HIV/AIDS clients.
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Affiliation(s)
- M A Momoh
- Department of Pharmaceutics University of Nigeria Nsukka, Enugu State
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Adedapo AA, Aremu OJ, Oyagbemi AA. Anti-oxidant, anti-inflammatory and antinociceptive properties of the acetone leaf extract of vernonia amygdalina in some laboratory animals. Adv Pharm Bull 2014; 4:591-8. [PMID: 25671194 DOI: 10.5681/apb.2014.087] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 12/16/2014] [Accepted: 12/28/2014] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Vernonia amygdalina is a medicinal plant of great importance that has its fresh leaves rich in vitamins and salt hence, it is valuable in human diet. The anti-oxidant, anti-inflammatory and analgesic activities of its acetone leaf extract were evaluated in this study to validate its folkloric use. METHODS The acetone extract is prepared by dissolving ground plant materials (200g) in 1 L of acetone for 48 h, filtered, and then dried using rotary evaporator before it is used for the pharmacological investigations. Standard phytochemical methods were used to test for the presence of phytoactive compounds in the plant. Acute toxicity was carried out in mice to determine safe doses for use. The anti-inflammatory activities were conducted using carrageenan and histamine to induce oedema in rats while analgesic activities were embarked upon using acetic acid- induced writhing test and formalin-induced paw lick test. The anti-oxidant activities were assessed in vitro using ABTS, DPPH, FRAP and total polyphenolics. RESULTS The results from this study showed that the 100 and 200 mg/kg doses of the acetone extract caused significant reduction in oedema induced by both carrageenan and histamine. Similar effect was observed in analgesic tests which were comparable to that of indomethacin, the reference drug used in the study. CONCLUSION The anti-oxidant effects were also good and the pharmacological activities may be due to the presence of polyphenols and other phytochemicals contained in the plant. The study may have thus validated the folkloric use of this plant as a medicinal and nutritional agent.
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Affiliation(s)
- Adeolu Alex Adedapo
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olujoke Janet Aremu
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ademola Adetokunbo Oyagbemi
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
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Iroanya OO, Adebesin OA, Okpuzor J. Evaluation of the Hepato and Nephron-Protective Effect of a Polyherbal Mixture using Wistar Albino Rats. J Clin Diagn Res 2014; 8:HC15-21. [PMID: 25121002 PMCID: PMC4129255 DOI: 10.7860/jcdr/2014/5875.4501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 02/15/2013] [Accepted: 04/30/2014] [Indexed: 11/24/2022]
Abstract
AIM A polyherbal formulation prepared from a mixture of leaves of Gongronema latifolia, Ocimum gratissimum and Vernonia amygdalina (GOV) was evaluated for hepato-nephro protective properties against acetaminophen-induced toxicity in Wistar albino rats. MATERIALS AND METHODS Normal Wistar albino rats were orally treated with different doses of GOV extract (2, 4 and 8 g/kg b. wt), distilled water and some standard hepatoprotective drugs such as Liv 52 and silymarin for 14 days. However, a day prior to the 14th day, 3 g/kg body weight dose of Acetaminophen (APAP) was administered p.o. 1h before GOV and the standard drugs to induce hepatic and renal damage. The normal control was setup which received only distilled water. The serum levels of liver marker enzymes, biochemical analytes, antioxidant enzymes and hematological parameters were monitored. RESULTS The results showed that pretreatment of experimental animals with a different doses of the polyherbal formulation dose dependently caused a significant (p≤0.05) increase in the levels of most of the measured hematological parameters but significantly (p≤0.05) reduced the levels of MCV and monocytes when compared to the APAP induced toxin control group. Rats pretreated with GOV exhibited significant (p < 0.05) increase in serum levels of ALP, ALT, AST, GGT, LDH, Cholesterol, Triglycerides, Urea and a subsequent decrease in Albumin, Creatine and Total protein when compared to the normal rats. This trend in enzyme and biochemical analytes levels were significantly (p < 0.05) reversed when compared to toxin control group. GOV significantly (p < 0.05) and dose dependently increased the serum, kidney and hepatic CAT, GPx, GSH, GST, SOD and total protein activity in APAP induced damage in rats compared to the toxin control groups. CONCLUSION The data from this study suggest that the polyherbal formulation possess hepato and nephron-protective potential against acetaminophen induced hepatotoxicity in rats, thus providing scientific rationale for its use in traditional medicine for the treatment of liver diseases.
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Affiliation(s)
| | - Olumide Adedapo Adebesin
- Assistant Lecturer, Department of Cell Biology and Genetics,University of Lagos, Akoka – Yaba, Lagos, Nigeria
| | - Joy Okpuzor
- Professor and Head, Department of Cell Biology and Genetics,University of Lagos, Akoka – Yaba, Lagos, Nigeria
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Cameron KS, Howard CB, Izevbigie EB, Hill BJ, Tchounwou PB. Sensitivity and mechanisms of taxol-resistant prostate adenocarcinoma cells to Vernonia amygdalina extract. Exp Toxicol Pathol 2013; 65:759-65. [PMID: 23238229 PMCID: PMC3652909 DOI: 10.1016/j.etp.2012.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Accepted: 11/08/2012] [Indexed: 12/13/2022]
Abstract
Prostate cancer (PC) patients once Paclitaxel (TAX) treatment responsive later develop hormone refractory PC, thus becoming TAX-insensitive. This underscores the urgent need to develop novel anti-PC therapies. Vernonia amygdalina (VA) could be one such candidate agent. We have shown that androgen-independent PC-3 cells are sensitive to VA treatment in vitro. VA extract (0.01, 0.1 and 1 mg/ml) inhibited DNA synthesis by 12%, 45% (p<0.05), and 73% (p<0.01) respectively. In contrast, TAX (0.01, 0.1, and 1 μM) failed to significantly affect cell growth, suggesting TAX resistance. We tested molecular mechanisms which may lend to the observed PC-3 cell VA sensitivity/TAX resistance. Though both VA and TAX stimulated MAPK activity, VA's induction was more intense, but transient, compared to TAX's sustained action. NF-κB activation was inhibited on average by 50% by either 1 mg/ml VA or 1 μM TAX. VA extract caused 35% and 45% increases in c-Myc activity at 10 and 60 min intervals respectively, with the highest stimulation attained 1h after treatment. In contrast, similar levels were attained by TAX rapidly (within 5 min) and were sustained compared to the slow/multi-phasic action of VA. VA extract treatments had no effect on AKT gene expression, while TAX treatments yielded a four-fold (P<0.01) increase; and P-glycoprotein (P-gp) activity was inhibited by VA and stimulated by TAX, compared to control (basal ATPase activity). This study shows that TAX-resistant PC-3 cells are sensitive to VA, perhaps explained by differential regulatory patterns of MAPK, c-Myc, AKT, and Pgp activities/expressions.
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Affiliation(s)
- Keyuna S. Cameron
- The Laboratory of Cellular Signaling, Phytoceuticals, and Cancer Prevention and Therapies, Jackson State University, Jackson, Mississippi
- NIH-Center for Environmental Health, College of Science Engineering and Technology, Jackson State University, Jackson, Mississippi
| | - Carolyn B. Howard
- JSU-RCMI Breast Cancer Research Laboratory, Jackson State University, Jackson, Mississippi
- NIH-Center for Environmental Health, College of Science Engineering and Technology, Jackson State University, Jackson, Mississippi
- Department of Biology, Jackson State University, Jackson, Mississippi
| | - Ernest B. Izevbigie
- The Laboratory of Cellular Signaling, Phytoceuticals, and Cancer Prevention and Therapies, Jackson State University, Jackson, Mississippi
- NIH-Center for Environmental Health, College of Science Engineering and Technology, Jackson State University, Jackson, Mississippi
- Department of Biology, Jackson State University, Jackson, Mississippi
| | - Brandon J. Hill
- The Laboratory of Cellular Signaling, Phytoceuticals, and Cancer Prevention and Therapies, Jackson State University, Jackson, Mississippi
- NIH-Center for Environmental Health, College of Science Engineering and Technology, Jackson State University, Jackson, Mississippi
- Department of Biology, Jackson State University, Jackson, Mississippi
| | - Paul B. Tchounwou
- JSU-RCMI Breast Cancer Research Laboratory, Jackson State University, Jackson, Mississippi
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