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Nkwingwa BK, Wado EK, Foyet HS, Bouvourne P, Jugha VT, Mambou AHMY, Bila RB, Taiwe GS. Ameliorative effects of Albizia adianthifolia aqueous extract against pentylenetetrazole-induced epilepsy and associated memory loss in mice: Role of GABAergic, antioxidant defense and anti-inflammatory systems. Biomed Pharmacother 2023; 165:115093. [PMID: 37392651 DOI: 10.1016/j.biopha.2023.115093] [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: 05/08/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023] Open
Abstract
Albizia adianthifolia (Schumach.) (Fabaceae) is a medicinal herb used for the treatment of epilepsy and memory impairment. This study aims to investigate the anticonvulsant effects of Albizia adianthifolia aqueous extract against pentylenetetrazole (PTZ)-induced spontaneous convulsions in mice; and determine whether the extract could mitigate memory impairment, oxidative/nitrergic stress, GABA depletion and neuroinflammation. Ultra-high performance liquid chromatography/mass spectrometry analysis was done to identify active compounds from the extract. Mice were injected with PTZ once every 48 h until kindling was developed. Animals received distilled water for the normal group and negative control groups, doses of extract (40, 80, or 160 mg/kg) for the test groups and sodium valproate (300 mg/kg) for the positive control group. Memory was measured using Y maze, novel object recognition (NOR) and open field paradigms, while the oxidative/nitrosative stresses (MDA, GSH, CAT, SOD and NO), GABAergic transmission (GABA, GABA-T and GAD) and neuro-inflammation (TNF-α, IFN-γ, IL- 1β, and IL-6) were determined. Brain photomicrograph was also studied. Apigenin, murrayanine and safranal were identified in the extract. The extract (80-160 mg/kg) significantly protected mice against seizures and mortality induced by PTZ. The extract significantly increased the spontaneous alternation and the discrimination index in the Y maze and NOR tests, respectively. PTZ kindling induced oxidative/nitrosative stress, GABA depletion, neuroinflammation and neuronal cells death was strongly reversed by the extract. The results suggest that the anticonvulsant activity of Albizia adianthifolia extract is accompanied by its anti-amnesic property, and may be supported by the amelioration of oxidative stress, GABAergic transmission and neuroinflammation.
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Affiliation(s)
- Balbine Kamleu Nkwingwa
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
| | - Eglantine Keugong Wado
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
| | - Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
| | - Parfait Bouvourne
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
| | - Vanessa Tita Jugha
- Department of Animal Biology and Conservation, Faculty of Science, University of Buea, P.O. Box 63, Buea, Cameroon
| | - Alain Hart Mann Youbi Mambou
- Department of Animal Biology and Conservation, Faculty of Science, University of Buea, P.O. Box 63, Buea, Cameroon
| | - Raymond Bess Bila
- Department of Animal Biology and Conservation, Faculty of Science, University of Buea, P.O. Box 63, Buea, Cameroon
| | - Germain Sotoing Taiwe
- Department of Animal Biology and Conservation, Faculty of Science, University of Buea, P.O. Box 63, Buea, Cameroon.
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Rebe RN, Lembe JT, Nyayi SDG, Ngatanko HHA, Wado EK, Ketcha Wanda GJM, Ndinteh DT, Njamen D, Zingue S, Foyet HS. Estrogenic and anti-amnesic potential of Millettia griffoniana Baill. (Fabaceae) ethanolic extract on scopolamine-induced memory impairment in ovariectomized Wistar rats. J Ethnopharmacol 2023; 309:116325. [PMID: 36906157 DOI: 10.1016/j.jep.2023.116325] [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] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dementias including Alzheimer disease (AD) are three times higher in menopausal women than in men. Phytoestrogens, a group of plant-derived compounds are known to alleviate menopausal complaints including dementia. Millettia griffoniana Baill is a phytoestrogen-rich plant used to treat menopausal complaints and dementia. AIM Evaluating the estrogenic and neuroprotective potential of Millettia griffoniana on ovariectomized (OVX) rats. MATERIALS AND METHODS The in vitro safety of M. griffoniana ethanolic extract was assayed by MTT in human mammary epithelial (HMEC) and mouse neuronal (HT-22) cells and its lethal dose 50 (LD50) was estimated following OECD 423 guidelines. For estrogenicity, in vitro the well known E-screen assay on MCF-7 cells was performed and in vivo four groups of OVX rats were treated either with 75, 150 and 300 mg/kg M. griffoniana extract doses or estradiol (1 mg/kg BW) for three days; and changes in uterine and vagina were analyzed. Then, for neuroprotective effect, Alzheimer-type dementia induction was achieved by scopolamine (1.5 mg/kg B.W., i.p.) injection four days/week and M. griffoniana extract as well as piracetam (standard) were administered daily for 2 weeks to evaluate the extract's neuroprotective potential. The endpoints were the assessment of learning and working memory, oxidative stress state (SOD, CAT, and MDA) in brain, acetylcholine esterase (AChE) activity and the histopathological changes in hippocampus. RESULTS No toxic effect was observed when incubating mammary (HMEC) and neuronal (HT-22) cells with M. griffoniana ethanol extract for 24 h and its LD50 was found >2000 mg/kg. The extract also exhibited both in vitro and in vivo estrogenic activities, displayed by a significant (p < 0.01) increment in MCF-7 cells population in vitro and an increase in the epithelium height of the vagina and the wet weight of the uterus mainly with the 150 mg/kg BW extract dose compared to untreated OVX rats. The extract also reversed scopolamine-induced memory impairment in rat by improving learning, working and reference memory. This was associated with an increment in CAT and SOD expression, alongside a decrement in MDA content and AChE activity in hippocampus. Further, the extract reduced neuronal cell loss in hippocampal structures (CA1, CA3 and dentate gyrus). High Performance Liquid Chromatography coupled with Mass Spectrometry (HPLC-MS) spectra, revealed the presence of numerous phytoestrogens in M. griffoniana extract. CONCLUSION M. griffoniana ethanolic extract has estrogenic, anticholinesterase and antioxidant activities that could account for its anti-amnesic effects. These findings therefore sheds light on why this plant is commonly used in the therapy of menopausal complaints and dementia.
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Affiliation(s)
- Roland Nhouma Rebe
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon.
| | - Jordan Tonga Lembe
- Centre for Natural Product Research, Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg, 2028, South Africa.
| | - Simon Désiré Guedang Nyayi
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon.
| | | | - Eglantine Keugong Wado
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon.
| | | | - Derek Tantoh Ndinteh
- Centre for Natural Product Research, Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg, 2028, South Africa.
| | - Dieudonné Njamen
- Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaounde, Cameroon.
| | - Stéphane Zingue
- Centre for Natural Product Research, Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg, 2028, South Africa; Department of Pharmacotoxicology and Pharmacokinetics, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, P.O. Box 1364 Yaoundé, Cameroon.
| | - Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon.
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Damo JLK, Boiangiu RS, Brinza I, Kenko Djoumessi LB, Rebe RN, Kamleu BN, Guedang SDN, Camdi GW, Bouvourné P, Keugong EW, Ngatanko HHA, Cioanca O, Hancianu M, Foyet HS, Hritcu L. Neuroprotective Potential of Guiera senegalensis (Combretaceae) Leaf Hydroethanolic Extract against Cholinergic System Dysfunctions and Oxidative Stress in Scopolamine-Induced Cognitive Impairment in Zebrafish ( Danio rerio). Plants (Basel) 2022; 11:1149. [PMID: 35567150 PMCID: PMC9100236 DOI: 10.3390/plants11091149] [Citation(s) in RCA: 2] [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] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 06/15/2023]
Abstract
Guiera senegalensis JF Gmel. (Combretaceae) (GS) is a plant used in traditional medicine in West Africa for the treatment of several diseases, such as epilepsy and depression. However, its potential benefits in improving scopolamine (Sco)-induced memory impairment and brain oxidative stress in zebrafish have been investigated. In the present study, zebrafish (Danio rerio) were treated with GS (1, 4, and 8 μg/L) for 19 days as well as Sco (100 µM) 30 min before behavioral tests. Behavioral performance was assessed by the Y-maze test and novel object recognition test (NOR), whereas anxiety response was evaluated in the novel tank diving test (NTT). Subsequently, high-performance liquid chromatography (HPLC) was used to evaluate the GS chemical composition. Sco promoted oxidative stress and acetylcholinesterase (AChE) activity. Moreover, both oxidative stress parameters and AChE activity were ameliorated by GS treatment. Accordingly, the present findings further provided the potential use of GS as a natural, alternative treatment against cognitive disorders associated to Alzheimer's disease (AD).
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Affiliation(s)
- Jorelle Linda Kamda Damo
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Razvan Stefan Boiangiu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (I.B.)
| | - Ion Brinza
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (I.B.)
| | - Léa Blondelle Kenko Djoumessi
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Roland Nhouma Rebe
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Balbine Nkwingwa Kamleu
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Simon Désiré Nyayi Guedang
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Guillaume Woumitna Camdi
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Parfait Bouvourné
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Eglantine Wado Keugong
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Hervé Hervé Abaïssou Ngatanko
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Oana Cioanca
- Department of Pharmacognosy, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (O.C.); (M.H.)
| | - Monica Hancianu
- Department of Pharmacognosy, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (O.C.); (M.H.)
| | - Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua P.O. Box 814, Cameroon; (J.L.K.D.); (L.B.K.D.); (R.N.R.); (B.N.K.); (S.D.N.G.); (G.W.C.); (P.B.); (E.W.K.); (H.H.A.N.)
| | - Lucian Hritcu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (I.B.)
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Keugong Wado E, Kubicki M, Ngatanko AHH, Léa Blondelle KD, Jorelle Linda D, Roland RN, Balbine K, Lamshoeft M, Assongalem AE, Foyet HS. Anxiolytic and antidepressant effects of Ziziphus mucronata hydromethanolic extract in male rats exposed to unpredictable chronic mild stress: Possible mechanisms of actions. J Ethnopharmacol 2020; 260:112987. [PMID: 32446929 DOI: 10.1016/j.jep.2020.112987] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/04/2020] [Accepted: 05/16/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ziziphus mucronata (ZM) is used traditionally in the treatment of mood and depression. However, no existing scientific data is confirming this traditional claim. AIM OF THE STUDY The present study was planned to investigate the anxiolytic and antidepressant-like effects of this plant in a stressed-induced depression model in rats. MATERIALS AND METHODS Depressive-like behaviors were induced by exposing rats to different stress paradigms daily for 30 days. A sucrose preference test was performed to assess anhedonia in rats. Anxiety and depression-related behavior were assessed. The oxidative parameters (lipid peroxidation, SOD and catalase activities) were evaluated. Pindolol and Flumazenil were also used to assess the mechanism of action of ZM extract. RESULTS The results showed that chronic administration of ZM (150, 300, and 600 mg/kg, p.o., 30 days) and imipramine treatment (20 mg/kg, p.o, 30 days) remarkably (P < 0.05) reversed the UCMS-induced behavioral changes observed in stress vehicle treated rats by reducing sucrose preference, decreased the immobility period in the FST and latency in NSF. Besides, ZM (300 and 600 mg/kg, p.o., 30 days) raised the percentages of time spent and number of open arms entries as well as the number of transitions. Also, ZM (300 mg/kg, (P < 0.05) decreased lipid peroxidation and increased both SOD and catalase activities (300 and 600 mg/kg, (P < 0.05)). These aforementioned behavioral indices were also completely nullified by pindolol a β-adrenoceptors blocker and 5-HT 1A/1B receptor antagonist but not by flumazenil, a benzodiazepine receptors antagonist. CONCLUSION ZM improved symptoms of anxiety and depression in behavioral despair paradigm in chronically stressed rats. The observed effects could be due to its capacities to restore the antioxidant status, and probably the modulation of monoamines transmissions.
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Affiliation(s)
- Eglantine Keugong Wado
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box: 814, Maroua, Cameroon.
| | - Michael Kubicki
- Research and Development Bayer Crop Science, 40789, Monheim, Germany
| | | | | | - Damo Jorelle Linda
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box: 814, Maroua, Cameroon
| | - Rebe Nhouma Roland
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box: 814, Maroua, Cameroon
| | - Kamleu Balbine
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box: 814, Maroua, Cameroon
| | - Marc Lamshoeft
- Research and Development Bayer Crop Science, 40789, Monheim, Germany
| | - Acha Emmanuel Assongalem
- Department of Biomedical Science, Faculty of Health Sciences, University of Buea, P.O. Box: 63, Buea, Cameroon
| | - Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box: 814, Maroua, Cameroon
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Foyet HS, Deffo ST, Yewo PK, Antioch I, Zingue S, Asongalem EA, Kamtchouing P, Ciobica A. Correction to: Ficus sycomorus extract reversed behavioral impairment and brain oxidative stress induced by unpredictable chronic mild stress in rats. Altern Ther Health Med 2017; 17:552. [PMID: 29284460 PMCID: PMC5747076 DOI: 10.1186/s12906-017-2069-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 12/19/2017] [Indexed: 11/23/2022]
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Vougat Ngom RRB, Garabed RB, Rumbeiha WK, Foyet HS, Schrunk DE, Shao D, Zoli Pagnah A. Penicillin-G and oxytetracycline residues in beef sold for human consumption in Maroua, Cameroon. FoodContamination 2017. [DOI: 10.1186/s40550-017-0062-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Foyet HS, Tsala DE, Zogo Essono Bodo JC, Carine AN, Heroyne LT, Oben EK. Anti-inflammatory and anti-arthritic activity of a methanol extract from Vitellaria paradoxa stem bark. Pharmacognosy Res 2015; 7:367-77. [PMID: 26692752 PMCID: PMC4660517 DOI: 10.4103/0974-8490.159569] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [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] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Vitellaria paradoxa is a traditional medicinal plant of Cameroon. Several studies on this plant have focused on the cosmetic profile of its fruits. The present study focuses on the anti-inflammatory potency of stem barks extract of this plant. OBJECTIVE The objective was to evaluate the effect of methanolic extract of V. paradoxa (VPME) stem barks on inflammatory response in rats. MATERIALS AND METHODS Anti-inflammatory effects of VPME were evaluated in acute and chronic (28 days) inflammation induced in Wistar albino rats. The effects on hyperalgesia and locomotors activity were also quantified. The relative weight of lymphoid organs was obtained as well as some hematological parameters. RESULTS In the carrageenan-induced inflammation, VPME (75 mg/kg) exhibited a significant (66.67%) inhibition after 1 h. On the complete Freund's adjuvant-induced rheumatoid arthritis, VPME showed a significant protective effect with 8.12% inflammation against 25.00% for the control group after 2 days of the treatment. The extract (75 and 150 mg/kg) significantly reduced the score of arthritis with a maximum obtained on day 19(th) of the experimentation. There was a significant increase in the reaction time of rats on the hot plate as well as the exploratory activities of the animals in the open field. This extract significantly prevented weight, hemoglobin and red blood cells losses, and spleen hypertrophy. A protective action against skin destruction and cartilage erosion was evident. Liquid chromatography-mass spectrometry analysis of the extract revealed the presence of catechins. CONCLUSIONS These findings suggested that V. paradoxa may contribute to the reduction of the inflammatory response.
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Affiliation(s)
- Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Sciences, University of Maroua, P.O Box 814, Cameroon
| | - David Emery Tsala
- Department of Biological Sciences, Faculty of Sciences, University of Maroua, P.O Box 814, Cameroon
| | - J C Zogo Essono Bodo
- Department of Earth and Life Sciences, Higher Teachers' Training College, University of Maroua, P.O Box 55, Maroua, Cameroon
| | - Azanfack Name Carine
- Department of Earth and Life Sciences, Higher Teachers' Training College, University of Maroua, P.O Box 55, Maroua, Cameroon
| | - Lissia Toussoumna Heroyne
- Department of Earth and Life Sciences, Higher Teachers' Training College, University of Maroua, P.O Box 55, Maroua, Cameroon
| | - Eyong Kenneth Oben
- Department of Organic Chemistry, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon
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Foyet HS, Asongalem AE, Oben EK, Cioanca O, Hancianu M, Hritcu L. Effects of the Methanolic Extract of Vitellaria paradoxa Stem Bark Against Scopolamine-Induced Cognitive Dysfunction and Oxidative Stress in the Rat Hippocampus. Cell Mol Neurobiol 2015; 36:1139-49. [PMID: 26620052 DOI: 10.1007/s10571-015-0310-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 08/19/2015] [Accepted: 11/24/2015] [Indexed: 12/20/2022]
Abstract
Vitellaria paradoxa C.F. Gaertn (Sapotaceae) is a perennial three which naturally grows in the northern part of Cameroon. It has been traditionally used in the Cameroonian folk medicine for treating inflammation and pain. In the present study, we evaluate the possible anti-amnesic and antioxidative effects of the methanolic extract of V. paradoxa stem bark in an Alzheimer's disease (AD) rat model of scopolamine. Rats received a single injection of scopolamine (1.5 mg/kg) before behavioral testing and were treated with the methanolic extract (25 and 50 mg/kg), daily, for eight continuous days. Also, the antioxidant activity in the hippocampus was assessed using the total content of reduced glutathione and malondialdehyde levels. The scopolamine-treated rats exhibited the following: decrease of exploratory time and discrimination index within the novel object recognition test, decrease of spontaneous alternations percentage within Y-maze task, and increase of working memory errors, reference memory errors, and time taken to consume all five baits within radial arm-maze task. Administration of the methanolic extract significantly improved these parameters, suggesting positive effects on memory formation processes and antioxidant potential. Our results suggest that the methanolic extract ameliorates scopolamine-induced memory impairment by attenuation of the oxidative stress in the rat hippocampus.
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Affiliation(s)
- Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon.
| | - Acha Emmanuel Asongalem
- Department of Biomedical Sciences, Faculty of Health Sciences, University of Buea, P.O. Box 63, Buea, Cameroon
| | - Eyong Kenneth Oben
- Department of Organic Chemistry, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Oana Cioanca
- Faculty of Pharmacy, University of Medicine and Pharmacy "Gr. T. Popa", 16 University Str., 700117, Iasi, Romania
| | - Monica Hancianu
- Faculty of Pharmacy, University of Medicine and Pharmacy "Gr. T. Popa", 16 University Str., 700117, Iasi, Romania
| | - Lucian Hritcu
- Department of Biology, Alexandru Ioan Cuza University of Iasi, Bd. Carol I, No. 11, 700506, Iasi, Romania.
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Eyong KO, Foyet HS, Baïrys G, Ngosong Folefoc G, Acha Asongalem E, Lagojda A, Lamshöft M. A new ursane triterpenoic acid and other potential anti-inflammatory and anti-arthritic constituents from EtOAc extracts of Vitellaria paradoxa stem bark. J Ethnopharmacol 2015; 174:277-286. [PMID: 26297841 DOI: 10.1016/j.jep.2015.08.014] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 08/14/2015] [Accepted: 08/17/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Vitellaria paradoxa (shea tree) is used in traditional medicine for the treatment of various ailments, including, inflammation and fever. Therefore the present research investigates the anti-inflammatory and anti-rheumatic effects of V. paradoxa stem bark extracts in rats and the isolation and characterization of its active constituents. METHODS The anti-inflammatory activity of ethyl acetate extract of V. Paradoxa (VPEE) was evaluated by use of the carrageenan-induced paw oedema model in rats. Moreover, rheumatoid arthritis (RA) was induced by injection of Freund's Completed Adjuvant (FCA) into the subplantar surface of the hind paw of the male Wistar rats. Paw volume was measured plethysmometrically. Joint swelling was measured using electronic vernier caliper. Hot plate test was used to assess the effect of VPEE on hyperalgesia while open field was used to assess the locomotors activity. The relative weight of spleen, liver and thymus was obtained as well as some haematological parameters. Tibiotarsal joint was extracted for histopathology under light microscope. Chemical analysis was carried out by high resolution mass spectrometry and one and two-dimensional NMR techniques. RESULTS LC-MS analysis of the EtOAc extract revealed the presence of a new triterpenoid and several known compounds. The structure of the novel compound was elucidated by means of LC-MS and selected 1D and 2D-NMR experiments. The biological effects of ethyl acetate (VPEE), methanol (VPME) and water extracts (VPAE) of V. paradoxa were tested on carrageenan model of acute inflammation and FCA-induced rheumatoid arthritis animal model. In the carrageenan-induced inflammation, VPEE (150 mg/kg) significant (66.67%) inhibited the first (after 1h) and the second phase (4-6h) of edema formation. On the Complete Freund's adjuvant-induced rheumatoid arthritis, VPEE at the same dose showed a significantly protective effect. On days 19-28th of treatment, the maximum inflammatory percentage was between 9.60 and 8.91% for the VPEE compared to 30.91-24.29% for the controls. All the extracts significantly reduced the score of arthritis but the maximal reduction was obtained with the VPEE on day 24th of the experimentation. The altered haematological parameters in the arthritic rats were significantly recovered to near normal by the treatment with VPEE at the dose of 150 mg/kg. Further histological studies revealed the anti-arthritic activity by preventing cartilage destruction of the arthritic joints of adjuvant arthritic rats. The spleen hypertrophy induced by the FCA was also significantly inhibited. CONCLUSION These findings provide pharmacological basis for the application of the VPEE in inflammatory disorders.
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Affiliation(s)
- Kenneth Oben Eyong
- Department of Organic Chemistry, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | - Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 46, Maroua, Cameroon
| | - Guerisson Baïrys
- Department of Organic Chemistry, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | | | - Emanuel Acha Asongalem
- Department of Biomedical Science, Faculty of Health Sciences, University of Buea, P.O. Box 63, Buea, Cameroon
| | | | - Marc Lamshöft
- Bayer CropScience Aktiengesellschaft, Monheim, Germany.
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Beppe GJ, Dongmo AB, Foyet HS, Dimo T, Mihasan M, Hritcu L. The aqueous extract of Albizia adianthifolia leaves attenuates 6-hydroxydopamine-induced anxiety, depression and oxidative stress in rat amygdala. BMC Complement Altern Med 2015; 15:374. [PMID: 26481946 PMCID: PMC4615887 DOI: 10.1186/s12906-015-0912-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 10/13/2015] [Indexed: 01/15/2023]
Abstract
BACKGROUND While the Albizia adianthifolia (Schumach.) W. Wright (Fabaceae) is a traditional herb largely used in the African traditional medicine as analgesic, purgative, antiinflammatory, antioxidant, antimicrobial, memory-enhancer, anxiolytic and antidepressant drug, there are no scientific data that clarify the anxiolytic and antidepressant-like effects in 6-hydroxydopamine (6-OHDA)-lesioned animal model of Parkinson's disease. This study was undertaken in order to identify the effects of aqueous extract of A. adianthifolia leaves on 6-hydroxydopamine-induced anxiety, depression and oxidative stress in the rat amygdala. METHODS The effect of the aqueous extract of A. adianthifolia leaves (150 and 300 mg/kg, orally, daily, for 21 days) on anxiety and depression was assessed using elevated plus-maze and forced swimming tests, as animal models of anxiety and depression. Also, the antioxidant activity in the rat amygdala was assessed using assessed using superoxide dismutase, glutathione peroxidase and catalase specific activities, the total content of the reduced glutathione, protein carbonyl and malondialdehyde levels. Statistical analyses were performed using by one-way analysis of variance (ANOVA). Significant differences were determined by Tukey's post hoc test. F values for which p < 0.05 were regarded as statistically significant. Pearson's correlation coefficient and regression analysis were used in order to evaluate the connection between behavioral measures, the antioxidant defence and lipid peroxidation. RESULTS 6-OHDA-lesioned rats exhibited the following: decrease of the exploratory activity, the percentage of the time spent and the number of entries in the open arm within elevated plus-maze test and decrease of swimming time and increase of immobility time within forced swimming test. Administration of the aqueous extract significantly exhibited anxiolytic- and antidepressant-like effects and also antioxidant potential in the rat amygdala. CONCLUSIONS Our results suggest that the aqueous extract ameliorates 6-OHDA-induced anxiety and depression by attenuation of the oxidative stress in the rat amygdala. These pieces of evidence accentuate its use in traditional medicine.
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Affiliation(s)
- Galba Jean Beppe
- Laboratory of Animal Physiology, Faculty of Science, University of Yaoundé I, PO Box, 812, Yaoundé, Cameroon.
- Department of Biological Sciences, Faculty of Science, University of Maroua, PO Box, 814, Maroua, Cameroon.
| | - Alain Bertrand Dongmo
- Laboratory of Animal Biology and Physiology, University of Douala, PO Box, 24157, Douala, Cameroon.
| | - Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, PO Box, 814, Maroua, Cameroon.
| | - Théophile Dimo
- Laboratory of Animal Physiology, Faculty of Science, University of Yaoundé I, PO Box, 812, Yaoundé, Cameroon.
| | - Marius Mihasan
- Department of Biology, Alexandru Ioan Cuza University of Iasi, Bd. Carol I, No. 11, Iasi, Romania.
| | - Lucian Hritcu
- Department of Biology, Alexandru Ioan Cuza University of Iasi, Bd. Carol I, No. 11, Iasi, Romania.
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Foyet HS, Abaïssou HHN, Wado E, Acha EA, Alin C. Emilia coccinae (SIMS) G Extract improves memory impairment, cholinergic dysfunction, and oxidative stress damage in scopolamine-treated rats. BMC Complement Altern Med 2015; 15:333. [PMID: 26400617 PMCID: PMC4580266 DOI: 10.1186/s12906-015-0864-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 09/16/2015] [Indexed: 12/25/2022]
Abstract
BACKGROUND E. coccinae (SIMS) G. (Asteraceae) is an annual plant commonly found throughout the plain of the Central Africa and widely used in Cameroonian folk medicine for the treatment of fever and convulsions in children. We previously reported that the methanolic extract of this plant improved spatial memory. However no underlying mechanism was explored. The present study was undertaken to investigate the effects of the hydroalcoholic extract of Emilia coccinae on memory in scopolamine treated rats and to propose possible mechanisms of action. METHODS Novel object recognition and Y-maze paradigm were used to test memory while oxidative profile, AChE and ACh level of the whole brain were assessed to outline the mechanism of nootropic activity of the extract. 200 and 400 mg/kg of the extract were chronically administrated during 14 consecutive days in separate groups of scopolamine intraperitoneal treated rats (1.5 mg/kg). RESULTS The hydroalcoholic extract of Emilia coccinae (HEEC) at the dose of 200 mg/kg significantly improved the memory of rats and reversed the amnesia induced by scopolamine. In addition, we showed that this extract is decreasing the acetyl cholinesterase activity while also increasing the acetylcholine levels in the brain. HEEC (200 and 400 mg/kg) significantly increased antioxidant enzyme activities (SOD, GSH and CAT) and reduced lipid peroxidation (MDA level) in the rat whole brain homogenates. CONCLUSIONS Taken together, our results suggested that the hydroalcoholic extract of Emilia coccinae ameliorated the cognitive dysfunction in scopolamine treated rats through the blockage of the oxidative effect of scopolamine and inhibition of AChE activity.
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Affiliation(s)
- Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, Cameroon. P.O. Box: 814, Maroua, Cameroon.
| | - Hervé Hervé Ngatanko Abaïssou
- Department of Life and Earth Sciences, Higher Teachers' Training College, University of Maroua, P.O. Box: 55, Maroua, Cameroon.
| | - Eglantine Wado
- Department of Agriculture, Cattle farming and Derived products, High Institute of the Sahel, University of Maroua, P.O. Box: 46, Maroua, Cameroon.
| | - Emmanuel Asongalem Acha
- Department of Biomedical Science, Faculty of Health Sciences, University of Buea, P.O. Box 63, Buea, Cameroon.
| | - Ciobica Alin
- Alexandru Ioan Cuza University, 11 Carol I Blvd., 700506, Iasi, Romania.
- Center of Biomedical Research of the Romanian Academy, Iasi Branch, Romania.
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Vougat RRBN, Foyet HS, Ziebe R, Garabed RB. Antioxidant activity and phytochemical constituent of two plants used to manage foot and mouth disease in the Far North Region of Cameroon. J Intercult Ethnopharmacol 2014; 4:40-6. [PMID: 26401383 PMCID: PMC4566761 DOI: 10.5455/jice.20141020064838] [Citation(s) in RCA: 7] [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: 09/18/2014] [Accepted: 10/20/2014] [Indexed: 11/21/2022]
Abstract
Aim: Plants used in the Far North Region of Cameroon by livestock farmers to manage foot and mouth disease (FMD) in cattle and the phytochemical composition and antioxidant potentials of two of them (Boscia senegalensis [BS] and Tapinanthus dodoneifolius [TD]) were investigated in this study. Materials and Methods: Ethno veterinary data were collected from 325 livestock farmers using semi-structured interviews from September 2011 to April 2012. The 2,2-diphenyl-picrylhydrazyl radical scavenging activity and total phenolic content (TPC) were first performed with five different solvents to choose the best extract of each plant based on these two factors. To achieve our aim, the ferric iron reducing activity, hydroxyl radical scavenging activity (HRSA), free radical scavenging activity (FRSA), vitamin E and iron content were analyzed on extracts selected using current techniques. Results: The results showed that 12 plants of 8 different families are regularly used by farmers to manage FMD. It also demonstrated that acetone extract of TD and methanolic extract of BS are the extracts which showed the best total antioxidant activity (AA) and the best TPC. In general, TD show the best AA during the HRSA and FRSA analysis compared with BS. Similarly, TD content more phenolic compounds and tannins than BS. Both plants contain proteins, saponins, tannins, phenols, alkaloid, and polyphenols which are known to have many biological activities. Conclusion: These results support the AA of both plants and can justify their use by herders to treat FMD which is often followed by many secondary diseases.
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Affiliation(s)
| | - Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Sciences, University of Maroua, Maroua, Cameroon
| | - Roland Ziebe
- Department of Agriculture, Livestock and by-products, The Higher Institute of the Sahel, University of Maroua, Maroua, Cameroon
| | - Rebecca B Garabed
- Department of Veterinary Preventative Medicine, College of Veterinary Medicine, Ohio State University, OH, USA
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Beppe GJ, Dongmo AB, Foyet HS, Tsabang N, Olteanu Z, Cioanca O, Hancianu M, Dimo T, Hritcu L. Memory-enhancing activities of the aqueous extract of Albizia adianthifolia leaves in the 6-hydroxydopamine-lesion rodent model of Parkinson's disease. BMC Complement Altern Med 2014; 14:142. [PMID: 24884469 PMCID: PMC4019966 DOI: 10.1186/1472-6882-14-142] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 04/25/2014] [Indexed: 11/10/2022]
Abstract
Background Albizia adianthifolia (Schumach.) W. Wright (Fabaceae) is a traditional herb largely used in the African traditional medicine as analgesic, purgative, anti-inflammatory, antioxidant, antimicrobial and memory-enhancer drug. This study was undertaken in order to evaluate the possible cognitive-enhancing and antioxidative effects of the aqueous extract of A. adianthifolia leaves in the 6-hydroxydopamine-lesion rodent model of Parkinson’s disease. Methods The effect of the aqueous extract of A. adianthifolia leaves (150 and 300 mg/kg, orally, daily, for 21 days) on spatial memory performance was assessed using Y-maze and radial arm-maze tasks, as animal models of spatial memory. Pergolide - induced rotational behavior test was employed to validate unilateral damage to dopamine nigrostriatal neurons. Also, in vitro antioxidant activity was assessed through the estimation of total flavonoid and total phenolic contents along with determination of free radical scavenging activity. Statistical analyses were performed using two-way analysis of variance (ANOVA). Significant differences were determined by Tukey’s post hoc test. F values for which p < 0.05 were regarded as statistically significant. Pearson’s correlation coefficient and regression analysis were used in order to evaluate the association between behavioral parameters and net rotations in rotational behavior test. Results The 6-OHDA-treated rats exhibited the following: decrease of spontaneous alternations percentage within Y-maze task and increase of working memory errors and reference memory errors within radial arm maze task. Administration of the aqueous extract of A. adianthifolia leaves significantly improved these parameters, suggesting positive effects on spatial memory formation. Also, the aqueous extract of A. adianthifolia leaves showed potent in vitro antioxidant activity. Furthermore, in vivo evaluation, the aqueous extract of A. adianthifolia leaves attenuated the contralateral rotational asymmetry observed by pergolide challenge in 6-OHDA-treated rats. Conclusions Taken together, our results suggest that the aqueous extract of A. adianthifolia leaves possesses antioxidant potential and might provide an opportunity for management neurological abnormalities in Parkinson’s disease conditions.
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Bouba AA, Njintang NY, Foyet HS, Scher J, Montet D, Mbofung CMF. Proximate Composition, Mineral and Vitamin Content of Some Wild Plants Used as Spices in Cameroon. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/fns.2012.34061] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Hritcu L, Foyet HS, Stefan M, Mihasan M, Asongalem AE, Kamtchouing P. Neuroprotective effect of the methanolic extract of Hibiscus asper leaves in 6-hydroxydopamine-lesioned rat model of Parkinson's disease. J Ethnopharmacol 2011; 137:585-591. [PMID: 21704692 DOI: 10.1016/j.jep.2011.06.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 05/19/2011] [Accepted: 06/08/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE While the Hibiscus asper Hook.f. (Malvaceae) is a traditional herb largely used in tropical region of the Africa as vegetable, potent sedative, tonic and restorative, anti-inflammatory and antidepressive drug, there is very little scientific data concerning the efficacy of this. MATERIALS AND METHODS The antioxidant and antiapoptotic activities of the methanolic extract of Hibiscus asper leaves (50 and 100 mg/kg) were assessed using superoxide dismutase (SOD), glutathione peroxidase (GPX) and catalase (CAT) specific activities, total glutathione (GSH) content, malondialdehyde (MDA) level (lipid peroxidation) and DNA fragmentation assays in male Wistar rats subjected to unilateral 6-hydroxydopamine (6-OHDA)-lesion. RESULTS In 6-OHDA-lesioned rats, methanolic extract of Hibiscus asper leaves showed potent antioxidant and antiapoptotic activities. Chronic administration of the methanolic extract (50 and 100 mg/kg, i.p., daily, for 7 days) significantly increased antioxidant enzyme activities (SOD, GPX and CAT), total GSH content and reduced lipid peroxidation (MDA level) in rat temporal lobe homogenates, suggesting antioxidant activity. Also, DNA cleavage patterns were absent in the 6-OHDA-lesioned rats treated with methanolic extract of Hibiscus asper leaves, suggesting antiapoptotic activity. CONCLUSIONS Taken together, our results suggest that the methanolic extract of Hibiscus asper leaves possesses neuroprotective activity against 6-OHDA-induced toxicity through antioxidant and antiapoptotic activities in Parkinson's disease model.
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Affiliation(s)
- Lucian Hritcu
- Department of Biology, Alexandru Ioan Cuza University, Bd. Carol I, No.11 20A, Iasi 700506, Romania.
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Foyet HS, Hritcu L, Ciobica A, Stefan M, Kamtchouing P, Cojocaru D. Methanolic extract of Hibiscus asper leaves improves spatial memory deficits in the 6-hydroxydopamine-lesion rodent model of Parkinson's disease. J Ethnopharmacol 2011; 133:773-779. [PMID: 21070845 DOI: 10.1016/j.jep.2010.11.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 10/27/2010] [Accepted: 11/02/2010] [Indexed: 05/30/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE While the Hibiscus asper Hook.f. (Malvaceae) is a traditional herb largely used in tropical region of the Africa as vegetable, potent sedative, tonic and restorative, anti-inflammatory and antidepressive drug, there is very little scientific data concerning the efficacy of this. AIM OF THE STUDY We investigated antioxidant activity and the effects of methanolic extract of Hibiscus asper leaves on neurological capacity of male Wistar rats subjected to unilateral 6-hydroxydopamine (6-OHDA)-lesion. MATERIALS AND METHODS Two model systems: 2,4-dinitrophenyl-1-picryl hydrazyl (DPPH) radical scavenging activity and β-carotene bleaching inhibition assay were used to measure the antioxidant activities of the plan extract. We also investigated the neuroprotective effect of methanolic extract of Hibiscus asper leaves (50 and 100 mg/kg) in male Wistar rats subjected to unilateral 6-hydroxydopamine (6-OHDA)-lesion rat model. RESULTS Methanolic extract of Hibiscus asper leaves showed potent antioxidant and free radical scavenging activity. Chronic administration of methanolic extract (50 and 100 mg/kg, i.p., daily, for 7 days) significantly reduce anxiety-like behavior and inhibit depression in elevated plus-maze and forced swimming tests, suggesting anxiolytic and antidepressant activity. Also, spatial memory performance in Y-maze and radial arm-maze tasks was improved, suggesting positive effects on memory formation. CONCLUSIONS Taken together, our results suggest that the methanolic extract of Hibiscus asper leaves have antioxidant effects and might provide an opportunity to management neurological abnormalities in Parkinson's disease conditions.
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Affiliation(s)
- Harquin Simplice Foyet
- Department of Agriculture, Cattle farming and Derived products, High Institute of the Sahel, University of Maroua, Cameroon
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Asongalem EA, Nana P, Foyet HS, Dimo T, Kamtchouing P. Antifertility and fetotoxic activities of Acanthus montanus aqueous extract in Wistar rats. ACTA ACUST UNITED AC 2009; 30:521-8. [PMID: 18985180 DOI: 10.1358/mf.2008.30.7.1254614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Acanthus montanus T. Anderson (Acanthaceae) possesses several medicinal properties; it is used in Cameroon as a folk medicine to treat pain, inflammation and threatened abortion. The aim of this study was to determine the effect of A. montanus aqueous extract on the estrous cycle pre- and postimplantation in rats and its mechanism of action. The estrous cycles of Wistar rats were monitored before, during and after oral administration of distilled water (control) or aqueous extract (62.5, 125, 250, 500, 1000 mg/kg/day). Furthermore, pregnant rats received the above doses of aqueous extract on days 1-6 (preimplantation) or 6-15 (postimplantation) of gestation and were sacrificed on day 8 or 20 of pregnancy, respectively. Moreover, aqueous extract (500 and 1000 mg/kg/day) was given to ovariectomized rats in the presence or absence of exogenously administered estrogen and/or progesterone and uterine weight and deciduoma count were evaluated. The extract, irrespective of dose, reversibly prolonged the metestrous and occasionally the diestrous stages of the estrous cycle. The extract did not alter the uterine wet weight or deciduoma count, suggesting a lack of estrogenic and progestational effects. At 1000 mg/kg/day, the extract caused appreciable preimplantation losses of 36.8 +/- 6.5% (P < 0.05), while none of the doses caused postimplantation losses. The extract also caused delayed fetal growth.
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Affiliation(s)
- Emmanuel Acha Asongalem
- Pharmacology and Toxicology Unit, Department of Physiological Sciences, Faculty of Medicine & Biomedical Sciences, University of Yaounde 1, Yaounde, Cameroon.
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Nana P, Asongalem EA, Foyet HS, Folefoc GN, Dimo T, Kamtchouing P. Maternal and developmental toxicity evaluation of Acanthus montanus leaves extract administered orally to Wistar pregnant rats during organogenesis. J Ethnopharmacol 2008; 116:228-233. [PMID: 18178353 DOI: 10.1016/j.jep.2007.11.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2006] [Revised: 10/26/2007] [Accepted: 11/15/2007] [Indexed: 05/25/2023]
Abstract
Acanthus montanus is a plant used in Cameroon to treat pains and threatened abortion. The aim of this study was to evaluate the influence of methanol/methylene chlorides leaves extract from Acanthus montanus on Wistar pregnant rats and identify the substance(s) essential for these actions. Dams were treated orally from days 6 to 15 of the pregnancy at the dose levels of 0, 250, 500 and 1000 mg/(kgday). They were sacrificed on day 20 or allowed to deliver and wean. Various parameters were assessed. The F(1) generation offsprings were allowed to give birth to F(2) generation and a number of parameters assessed. The results showed that there was no maternal or organs toxicity. Embryotoxicity was observed during organogenesis manifested by reduction in foetal body weight, crown-rump and tail lengths and reduced ossification of extremities bones. However after delivery, these signs of growth retardation were seen before day 5, and henceforth, the treated pups regained all their parameters to normality. All others parameters for F(1) and F(2) generations were insignificant. beta-Sitosterol was the major chemical component of the extract and its role on these results could not be ignored. The MeOH/CH(2)Cl(2) extract of this plant is embryotoxic peri-natally at high doses but this failed to manifest after 5 days of post-natal survival. beta-Sitosterol may be central in the observed effects of the extract. This extract can be tolerated by pregnant patients.
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Affiliation(s)
- P Nana
- Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon.
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Asongalem EA, Foyet HS, Ekobo S, Dimo T, Kamtchouing P. Antiinflammatory, lack of central analgesia and antipyretic properties of Acanthus montanus (Ness) T. Anderson. J Ethnopharmacol 2004; 95:63-68. [PMID: 15374608 DOI: 10.1016/j.jep.2004.06.014] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2004] [Revised: 05/12/2004] [Accepted: 06/21/2004] [Indexed: 05/24/2023]
Abstract
Aqueous leaves extract of Acanthus montanus (Nees) T. Anderson (Acanthaceae) were tested for antiinflammatory, analgesic and antipyretic properties. This was done using standard methodologies following oral administration of the extract. The results showed that the extract significantly reduced the oedema induced by carrageenan within 30 min with 200 mg/kg being the most potent. On the analgesia front, acetic acid writhing test was significant. The extract reduced only the number of paw licks of phase 2 and not phase 1 of formalin test. The results on hotplate and tail immersion tests excluded central acting analgesic properties of the extract. In overall, the analgesic tests conducted revealed that the extract had only peripheral analgesic properties. Its effect on pyresis was also observed to be appreciable. It significantly reduced fever at doses greater than 100 mg/kg within 6 h.
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Affiliation(s)
- E A Asongalem
- Department of Physiological Sciences, Faculty of Medicine and Biomedical Sciences, Pharmacology and Toxicology Unit, University of Yaounde 1, Yaounde, Cameroon, P.O. Box 8283, Yaounde.
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Asongalem EA, Foyet HS, Ngogang J, Folefoc GN, Dimo T, Kamtchouing P. Analgesic and antiinflammatory activities of Erigeron floribundus. J Ethnopharmacol 2004; 91:301-308. [PMID: 15120453 DOI: 10.1016/j.jep.2004.01.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2003] [Revised: 01/04/2004] [Accepted: 01/04/2004] [Indexed: 05/24/2023]
Abstract
This study was intended to evaluate the analgesic and antiinflammatory activities of an aqueous extract of Erigeron floribundus (H.B. & K) or (syn": Conyza sumatrensis (Retz) E.K. Walker) (Asteraceae). Phytochemical analysis was carried out using standard methodologies. The analgesic investigations were carried out against two types of noxious stimuli, chemical (formalin-induced pain and acetic acid-induced writhing) and thermal (hotplate and tail immersion tests). The effects following aspirin and naloxone pretreatments were also studied. For the antiinflammatory activities, the carrageenan-induced oedema of the hindpaw of rats was used and the paw volume measured plethysmometrically from 0 to 24 h after injection. This was compared to a standard drug indomethacin (10 mg/kg). The results were subjected to statistical analysis. The plant had saponins, flavonoids, glycosides, alkaloids, oils, phenols and tannins and significantly increased the reaction time of hotplate and immersion tests. It decreased the writhings of acetic acid-induced abdominal contractions and lickings of formalin-induced pain. Aspirin had no effect on hotplate and tail immersion tests but showed an effect on writhing test. These results showed that the plant had both central and peripheral acting effects and this was confirmed by its effect on both phases of formalin-induced pain. The extract also significantly decreased the rat paw oedema volume at 50 mg/kg and above. In conclusion, Erigeron floribundus has central and peripheral analgesic properties as well as antiinflammatory activities.
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Affiliation(s)
- E A Asongalem
- Department of Physiological Sciences, Pharmacology and Toxicology Unit, Faculty of Medicine & Biomedical Sciences, University of Yaounde 1, P.O. Box 8283, Yaounde, Cameroon.
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