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Nonato DTT, Aragão GF, Craveiro RMCB, Pereira MG, Vasconcelos SMM, Wong DVT, Júnior RCPL, Soares PMG, Lima MADS, Assreuy AMS, Chaves EMC. Polysaccharide-rich extract of Genipa americana leaves protects seizures and oxidative stress in the mice model of pentylenetetrazole-induced epilepsy. Biomed Pharmacother 2024; 172:116212. [PMID: 38364734 DOI: 10.1016/j.biopha.2024.116212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 02/18/2024] Open
Abstract
Plant polysaccharides have biological activities in the brain and those obtained from Genipa americana leaves present antioxidant and anticonvulsant effects in the mice model of pentylenetetrazole (PTZ)-induced acute seizures. This study aimed to evaluate the polysaccharide-rich extract of Genipa americana leaves (PRE-Ga) in the models of acute seizures and chronic epilepsy (kindling) induced by PTZ. In the acute seizure model, male Swiss mice (25-35 g) received PRE-Ga (1 or 9 mg/kg; intraperitoneal- IP), alone or associated with diazepam (0.01 mg/kg), 30 min before induction of seizures with PTZ (70 mg/kg; IP). In the chronic epilepsy model, seizures were induced by PTZ (40 mg/kg) 30 min after treatment and in alternated days up to 30 days and evaluated by video. Brain areas (prefrontal cortex, hippocampus, striatum) were assessed for inflammatory and oxidative stress markers. Diazepam associated to PRE-Ga (9 mg/kg; i.p.) increased the latency of seizures in acute (222.4 ± 47.57 vs. saline: 62.00 ± 4.709 s) and chronic models (6.267 ± 0.502 vs. saline: 4.067 ± 0.407 s). In hippocampus, PRE-Ga (9 mg/kg) inhibited TNF-α (105.9 ± 5.38 vs. PTZ: 133.5 ± 7.62 pmol/g) and malondialdehyde (MDA) (473.6 ± 60.51) in the chronic model. PTZ increased glial fibrillar acid proteins (GFAP) and Iba-1 in hippocampus, which was reversed by PRE-Ga (GFAP: 1.9 ± 0.23 vs PTZ: 3.1 ± 1.3 and Iba-1: 2.2 ± 0.8 vs PTZ: 3.2 ± 1.4). PRE-Ga presents neuroprotector effect in the mice model of epilepsy induced by pentylenetetrazole reducing seizures, gliosis, inflammatory cytokines and oxidative stress.
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Affiliation(s)
| | - Gislei Frota Aragão
- Superior Institute of Biomedical Sciences, State University of Ceará, 60714-903 Fortaleza, Ceará, Brazil
| | | | - Maria Gonçalves Pereira
- Superior Institute of Biomedical Sciences, State University of Ceará, 60714-903 Fortaleza, Ceará, Brazil
| | | | - Deysi Viviana Tenazoa Wong
- Department of Physiology and Pharmacology, Federal University of Ceará, 60455-760 Fortaleza, Ceará, Brazil
| | | | - Pedro Marcos Gomes Soares
- Department of Physiology and Pharmacology, Federal University of Ceará, 60455-760 Fortaleza, Ceará, Brazil
| | | | - Ana Maria Sampaio Assreuy
- Superior Institute of Biomedical Sciences, State University of Ceará, 60714-903 Fortaleza, Ceará, Brazil
| | - Edna Maria Camelo Chaves
- Superior Institute of Biomedical Sciences, State University of Ceará, 60714-903 Fortaleza, Ceará, Brazil.
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Foutsop AF, Ateufack G, Adassi BM, Yassi FB, Kom TD, Noungoua CM, Petsou A, Ngoupaye GT. The Aqueous Lyophilisate of Alchemilla Kiwuensis Engl. (Rosaceae) Displays Antiepileptogenic and Antiepileptic Effects on PTZ-induced Kindling in rats: Evidence of Modulation of Glutamatergic and GABAergic Pathways Coupled to Antioxidant Properties. Neurochem Res 2023; 48:3228-3248. [PMID: 37436614 DOI: 10.1007/s11064-023-03982-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/26/2023] [Accepted: 07/01/2023] [Indexed: 07/13/2023]
Abstract
Alchemilla kiwuensis Engl. (Rosaceae) (A. kiwuensis) is an herbaceous plant traditionally used by Cameroonians to treat epilepsy and other central nervous system disorders. The present study evaluated the antiepileptogenic and antiepileptic effects of A. kiwuensis (40 mg/kg, 80 mg/kg) following Pentylenetetrazole (PTZ)-induced kindling as well as its sub-chronic toxicity. Following an initial i.p administration of a challenge dose (70 mg/kg), Wistar rats of both sexes received sub convulsive doses (35 mg/kg) of PTZ every other day, one hour after the oral gavage of animals with treatments, until two consecutive stage 4, in all animals of negative control. Seizure progression, latency, duration, and repetition were noted. Twenty-four hours later, animals were dissected to extract their hippocampi. The resulting homogenates were used to evaluate Malondialdehyde, reduced glutathione, catalase activity, GABA, GABA-Transaminase, glutamate, glutamate transporter 2, IL-1β and TGF-1 β. Sub-chronic toxicity was conducted according to OECD 407 guidelines. The lyophilisate of A. kiwuensis significantly increased the latency of seizure appearance, delayed seizure progression and decreased seizure repetition and duration. Biochemical analysis revealed that the lyophilisate significantly increased the catalase activity, reduced glutathione, GABA, glutamate transporter 2 and TGF-1B levels. The lyophilisate equally caused a significant decreased in the GABA-Transaminase activity, malondialdehyde, and IL-1 β levels. There was no noticeable sign of toxicity. A. kiwuensis possesses antiepileptic and antiepiletogenic effects by enhancing GABAergic neurotransmission and antioxidant properties, coupled to modulation of glutamatergic and neuroinflammatory pathways and is innocuous in a sub-chronic model. These justifies its local use for the treatment of epilepsy.
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Affiliation(s)
- Aurelien Fossueh Foutsop
- Animal Physiology and Phytopharmacology Research Unit, Department of Animal Biology, Faculty of Sciences, University of Dschang, P.O BOX: 67, Dschang, Cameroon
| | - Gilbert Ateufack
- Animal Physiology and Phytopharmacology Research Unit, Department of Animal Biology, Faculty of Sciences, University of Dschang, P.O BOX: 67, Dschang, Cameroon
| | - Blesdel Maxwell Adassi
- Department of Biological Sciences, Faculty of Sciences, University of Maroua, P.O BOX: 814, Maroua, Cameroon
| | - Francis Bray Yassi
- Department of Biological Sciences, Faculty of Sciences, University of Ngaoundéré, P.O BOX: 454, Ngaoundéré, Cameroon
| | - Tatiana Diebo Kom
- Department of Biological Sciences, Faculty of Sciences, University of Maroua, P.O BOX: 814, Maroua, Cameroon
| | - Chretien Mbeugangkeng Noungoua
- Animal Physiology and Phytopharmacology Research Unit, Department of Animal Biology, Faculty of Sciences, University of Dschang, P.O BOX: 67, Dschang, Cameroon
| | - Adolph Petsou
- Department of Biological Sciences, Faculty of Sciences, University of Maroua, P.O BOX: 814, Maroua, Cameroon
| | - Gwladys Temkou Ngoupaye
- Animal Physiology and Phytopharmacology Research Unit, Department of Animal Biology, Faculty of Sciences, University of Dschang, P.O BOX: 67, Dschang, Cameroon.
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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] [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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Adassi MB, Ngoupaye GT, Yassi FB, Foutsop AF, Kom TD, Ngo Bum E. Revealing the most effective anticonvulsant part of Malvaviscus arboreus Dill. Ex Cav. and its acute and sub-acute toxicity. JOURNAL OF ETHNOPHARMACOLOGY 2023; 303:115995. [PMID: 36509255 DOI: 10.1016/j.jep.2022.115995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/21/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Different parts of Malvaviscus arboreus Dill. Ex Cav. (M. arboreus) are traditionally used in the West Region of Cameroon to treat many diseases, including epilepsy. AIM OF THE STUDY To determine which part of M. arboreus offers the best anticonvulsant effect, and to assess the acute and sub-acute toxicity of the part of interest. MATERIALS AND METHODS the anticonvulsant effect of the aqueous lyophilisate of the decoction of flowers, leaves, stems and roots of M. arboreus at various doses was evaluated and compared on the model of acute epileptic seizures induced by pentylenetetrazole (PTZ) (70 mg/kg), injected 1 h after oral administration of the various extracts. Out of these plant parts, the leaves were then selected to prepare the hydroethanolic extract and its anticonvulsant effect against PTZ at the doses of 122.5, 245 and 490 mg/kg, as well as its acute toxicity were compared with those of the aqueous lyophilisate of the leaves. The anticonvulsant effect of the aqueous lyophilisate of M. arboreus leaves was further evaluated on models of acute epileptic seizures induced by picrotoxin (PIC) (7.5 mg/kg), strychnine (STR) (2.5 mg/kg) and pilocarpine (350 mg/kg). The 28 days sub-acute toxicity, as well as the quantitative phytochemistry and the in vitro antioxidant potential (FRAP, DPPH, ABTS+) of the aqueous lyophilisate of the leaves of M. arboreus were also evaluated. RESULTS M. arboreus leaves showed the best anticonvulsant effect and the aqueous lyophilisate was the best extract. The latter significantly protected the animals against convulsions induced by PTZ (71.43%) (p < 0.01), PIC (57.14%) (p < 0.05) and STR (42%) and had no effect on pilocarpine-induced seizures. Furthermore, it showed no acute or sub-acute toxicity, and revealed a high content of flavonoids, saponins, tannins and alkaloids, and antioxidant activity in vitro. CONCLUSION The aqueous lyophilisate of the leaves of M. arboreus offers the best anticonvulsant effect on the extraction solvent used, and it would act mainly via a potentiation of the inhibitory systems of the brain (GABA, Glycine). In addition, its richness in bioactive compounds gives it an antioxidant potential, and it is not toxic in acute and sub-acute toxicity. All this justifies at least in part its empirical uses, and makes M. arboreus a candidate for the alternative treatment of epilepsy.
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Affiliation(s)
- Maxwell Blesdel Adassi
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
| | - Gwladys Temkou Ngoupaye
- Animal Physiology and Phytopharmacology Research Unit, Department of Animal Biology, University of Dschang, P.O. Box 67, Dschang, Cameroon.
| | - Francis Bray Yassi
- Department of Biological Sciences, Faculty of Science, University of Ngaoundéré, P.O. Box, Ngaoundéré, 454, Cameroon
| | - Aurelien Fossueh Foutsop
- Animal Physiology and Phytopharmacology Research Unit, Department of Animal Biology, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Tatiana Diebo Kom
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
| | - Elisabeth Ngo Bum
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
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Ethnomedicinal Information on Plants Used for the Treatment of Bone Fractures, Wounds, and Sprains in the Northern Region of the Republic of Benin. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:8619330. [PMID: 36588593 PMCID: PMC9797300 DOI: 10.1155/2022/8619330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022]
Abstract
Medicinal plants are frequently used in African countries due to their importance in the treatment of various conditions. In the northern Republic of Benin, traditional healers are recognized as specialists in the treatment of fractures, wounds, and sprains. The present study was conducted to document the practices (diagnosis and materials) and traditional knowledge accumulated by healers in this region on their area of specialty. In addition, literature-based research was performed to support the usage of the most cited plants. Sixty traditional healers identified as "reference persons" from Atakora and Donga departments in the northern Republic of Benin, who specialized in the treatment of fractures, wounds, and sprains, were interviewed in their communities through a semi-structured questionnaire. Information about the practice, age of the healers, medicinal plants used in this treatment, methods of preparation, and administration were collected. Samples of the plant species were also collected, identified, and stored in the national herbarium at the University of Abomey-Calavi, the Republic of Benin. The study enabled the identification of thirty-four (34) species belonging to twenty-three (23) families. Ochna rhizomatosa and Ochna schweinfurthiana (21%) were the most quoted plants among the species, followed by Chasmanthera dependens (12.1%), Piliostigma thonningii (11.3%), and Combretum sericeum (8.1%). These plants were reported to strengthen bones, reduce inflammation, relieve pain, and promote healing in the northern part of the Republic of Benin. Besides their ability to treat fractures, wounds, and sprains, they are also used for multiple purposes in the West African subregions. According to the available literature, some of the plants will need to be investigated for their phytoconstituents and pharmacological activity to validate their ethnobotanical uses. These results confirm the need for documenting traditional knowledge since it represents an opportunity for exploring plant species with potentially good pharmacological effects, which have been barely investigated. Plants identified may constitute a significant source of bioactive compounds in the treatment of various ailments such as skin inflammation and musculoskeletal disorders. They can be further explored to justify their use in traditional Beninese medicine.
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Ngoupaye GT, Adassi MB, Foutsop AF, Yassi FB, Ngo Bum E. Pentylenetetrazole kindling-induced epilepsy rat models: Insight on the severity state, a comparative study. IBRO Neurosci Rep 2022; 13:164-176. [PMID: 36590094 PMCID: PMC9795317 DOI: 10.1016/j.ibneur.2022.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 01/04/2023] Open
Abstract
This study aimed to carry out a comparative study of the main models of chronic epilepsy induced by pentylenetetrazole (PTZ)-kindling method and to assess the efficacy of sodium valproate, one of the main antiepileptics, on the best epilepsy-inducing kindling model. Two sets of 24 animals were divided into 4 groups of 6 animals and treated as follow: Set 1 included: group 1, control; group 2, the classic kindling PTZ group (UKEOD); group 3, PTZ kindling every other day group with challenge (CKEOD); group 4, PTZ kindling every day group, with challenge (CKED); Set 2 included: group 1, control; group 2, CKEOD group; group 3 and 4, receiving either valproate 200 mg/kg or valproate 300 mg/kg + CKEOD procedure. Results show that CKEOD group significantly reduced the number of injections necessary to reach the fully-kindled state, increased the severity of seizures and improved the stability of seizures. In addition, the CKEOD group significantly increased the level of malondialdehyde and GABA transaminase, reduced the level of reduced glutathione, catalase and GABA. Furthermore, it had no impact on plasma levels of alanine aminotransferase (ALAT) and aspartate aminotransferase (ASAT). Valproate 300 mg/kg significantly protected animals against kindling induced by CKEOD. The kindling model with a challenge dose administered on day 1 (CKEOD) thus allows to induce more severe, more stable chronic epilepsy and in a shorter period of time, and could thus contribute to a better understanding of epilepsy, as well as its uses in drug discovery.
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Affiliation(s)
- Gwladys Temkou Ngoupaye
- Department of Animal Biology, University of Dschang, P.O. Box 67, Dschang, Cameroon,Corresponding author.
| | - Maxwell Blesdel Adassi
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
| | | | - Francis Bray Yassi
- Department of Biological Sciences, Faculty of Science,University of Ngaoundéré, P.O. Box 454, Ngaoundéré, Cameroon
| | - Elisabeth Ngo Bum
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon
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Taiwe GS, Ndieudieu Kouamou AL, Dabole B, Ambassa ARM, Mambou HMAY, Bila RB, Tchoya TB, Menanga JR, Djomeni Dzeufiet PD, Ngo Bum E. Protective Effects of Anthocleista djalonensis Extracts against Pentylenetetrazole-Induced Epileptic Seizures and Neuronal Cell Loss: Role of Antioxidant Defense System. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2021; 2021:5523705. [PMID: 34504535 PMCID: PMC8423543 DOI: 10.1155/2021/5523705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 08/16/2021] [Indexed: 11/23/2022]
Abstract
Oxidative stress and neurodegeneration are involved in the initiation of epileptogenesis and progression of epileptic seizures. This study was aimed at investigating the anticonvulsant, antioxidant, and neuroprotective properties of active fractions isolated from Anthocleista djalonensis root barks in pentylenetetrazole mouse models of epileptic seizures. Bioactive-guided fractionation of Anthocleista djalonensis (AFAD) extracts using acute pentylenetetrazole (90 mg/kg) induced generalised tonic-clonic seizures, which afforded a potent anticonvulsant fraction (FPool 5). Further fractionation of AFAD was performed by high-performance liquid chromatography, which yielded fifteen subfractions, which were chemically characterised. In addition, AFAD was tested against convulsions or spontaneous kindled seizures induced, respectively, by acute (50 mg/kg) or subchronic (30 mg/kg) injection of pentylenetetrazole. Finally, oxidative stress markers, brain GABA content, and neuronal cell loss were evaluated in AFAD-treated pentylenetetrazole-kindled mice. Administration of AFAD significantly protected mice against acute pentylenetetrazole (90 mg/kg)-induced convulsions. In acute pentylenetetrazole (50 mg/kg)-induced hippocampal and cortical paroxysmal discharges, AFAD significantly decreased the number of crisis, the cumulative duration of crisis, and the mean duration of crisis. Additionally, AFAD significantly decreased the number of myoclonic jerks and improved the seizure score in subchronic pentylenetetrazole-induced kindled seizures. The pentylenetetrazole-induced alteration of oxidant-antioxidant balance, GABA concentration, and neuronal cells in the brain were attenuated by AFAD treatment. This study showed that AFAD protected mice against pentylenetetrazole-induced epileptic seizures possibly through the enhancement of antioxidant defence and GABAergic signalling. These events might be correlated with the amelioration of neuronal cell loss; hence, AFAD could be a potential candidate for the treatment of epilepsy.
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Affiliation(s)
- Germain Sotoing Taiwe
- Department of Zoology and Animal Physiology, Faculty of Science, University of Buea, Buea, Cameroon
| | | | - Bernard Dabole
- Department of Chemistry, Faculty of Science, University of Maroua, Maroua, Cameroon
| | | | | | - Raymond Bess Bila
- Department of Zoology and Animal Physiology, Faculty of Science, University of Buea, Buea, Cameroon
| | - Thierry Bang Tchoya
- Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I, Yaounde, Cameroon
| | - Joseph Renaud Menanga
- Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde I, Yaounde, Cameroon
| | | | - Elisabeth Ngo Bum
- Department of Biological Sciences, Faculty of Science, University of Ngaoundere, Ngaoundere, Cameroon
- Department of Biological Sciences, Faculty of Science, University of Maroua, Maroua, Cameroon
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Zheng T, Peng J, Pei T, Shi Y, Liu L, Chen K, Xiao H, Chen Y. Cornel iridoid glycoside exerts a neuroprotective effect on neuroinflammation in rats with brain injury by inhibiting NF-κB and STAT3. 3 Biotech 2019; 9:195. [PMID: 31065495 PMCID: PMC6497687 DOI: 10.1007/s13205-019-1697-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 03/28/2019] [Indexed: 12/28/2022] Open
Abstract
Traumatic brain injury leads to problems with movement and cognitive deficits and has a high mortality rate. Cornel iridoid glycoside, the active ingredient of Cornus officinalis, has been reported to ameliorate apoptosis and inflammation in rats. We investigated the therapeutic effect of cornel iridoid glycoside on neuroinflammation in rats with brain injury. Rats were treated with cornel iridoid glycoside, and then measurements of antioxidant, proinflammatory marker, and NF-κB and STAT3 mRNA and protein levels, as well as a histopathologic analysis, were conducted. Cornel iridoid glycoside significantly reduced lipid peroxidation and TNF-α and IL-6 levels but increased the levels of antioxidants. In addition, cornel iridoid glycoside significantly decreased the expression of NF-κB and STAT3. Histopathological analyses showed that cornel iridoid glycoside reduced the severity of neuroinflammation and apoptosis. Therefore, cornel iridoid glycoside significantly ameliorated neuroinflammation by reducing lipid peroxidation and proinflammatory marker levels and increasing antioxidant levels in rats with brain injury.
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Affiliation(s)
- Tingting Zheng
- Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen, 518036 Guangdong China
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Biomedical Research Institute, Biomedical Research Institute, Shenzhen PKU-HKUST Medical Center, Shenzhen, 518036 Guangdong China
| | - Jiao Peng
- Department of Pharmacy, Peking University Shenzhen Hospital, Shenzhen, 518036 Guangdong China
| | - Tao Pei
- Department of Stomatology, Peking University Shenzhen Hospital, Shenzhen, 518036 Guangdong China
| | - Yu Shi
- Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen, 518036 Guangdong China
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Biomedical Research Institute, Biomedical Research Institute, Shenzhen PKU-HKUST Medical Center, Shenzhen, 518036 Guangdong China
| | - Li Liu
- Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen, 518036 Guangdong China
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Biomedical Research Institute, Biomedical Research Institute, Shenzhen PKU-HKUST Medical Center, Shenzhen, 518036 Guangdong China
| | - Keke Chen
- Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen, 518036 Guangdong China
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Biomedical Research Institute, Biomedical Research Institute, Shenzhen PKU-HKUST Medical Center, Shenzhen, 518036 Guangdong China
| | - Haitao Xiao
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, 518061 Guangdong China
| | - Yun Chen
- Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen, 518036 Guangdong China
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Biomedical Research Institute, Biomedical Research Institute, Shenzhen PKU-HKUST Medical Center, Shenzhen, 518036 Guangdong China
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Taiwe GS, Kouamou ALN, Ambassa ARM, Menanga JR, Tchoya TB, Dzeufiet PDD. Evidence for the involvement of the GABA-ergic pathway in the anticonvulsant activity of the roots bark aqueous extract of Anthocleista djalonensis A. Chev. (Loganiaceae). J Basic Clin Physiol Pharmacol 2018; 28:425-435. [PMID: 28777735 DOI: 10.1515/jbcpp-2017-0048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 06/06/2017] [Indexed: 11/15/2022]
Abstract
BACKGROUND The root bark of Anthocleista djalonensis A. Chev. (Loganiaceae) is widely used in traditional medicine in Northern Cameroon to treat epilepsy and related conditions, such as migraine, insomnia, dementia, anxiety, and mood disorders. METHODS To investigate the anticonvulsant effects and the possible mechanisms of this plant, an aqueous extract of Anthocleista djalonensis (AEAD) was evaluated by using animal models of bicuculline-, picrotoxin-, pilocarpine-, and pentylenetetrazole-induced convulsions. Their effects on brain γ-aminobutyric acid (GABA) concentration and GABA-T activity were also determined. RESULTS This extract significantly protected mice against bicuculline-induced motor seizures. It provided 80% protection against picrotoxin-induced tonic-clonic seizures, and strongly antagonized convulsions induced by pilocarpine. AEAD also protected 100% of mice against pentylenetetrazole-induced seizures. Flumazenil, a central benzodiazepine receptor antagonist and FG7142, a partial inverse agonist in the benzodiazepine site of the GABAA receptor complex, were found to have an inhibitory effect on the anticonvulsant action of AEAD in pentylenetetrazole test. Finally, the brain GABA concentration was significantly increased and GABA-T activity was inhibited by AEAD. CONCLUSIONS The effects of Anthocleista djalonensis suggested the presence of anticonvulsant properties that might involve an action on benzodiazepine and/or GABA sites in the GABAA receptor complex or by modulating GABA concentration in the central nervous system (CNS).
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Owolabi OO, James DB, Sani I, Andongma BT, Fasanya OO, Kure B. Phytochemical analysis, antioxidant and anti-inflammatory potential of FERETIA APODANTHERA root bark extracts. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:12. [PMID: 29329564 PMCID: PMC5767069 DOI: 10.1186/s12906-017-2070-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 12/21/2017] [Indexed: 12/20/2022]
Abstract
Background Inflammation has been implicated in many disorders, including cancer and available therapies elicit adverse effects. Plants of the family Rubiaceae have shown potency against inflammation. The anti-inflammatory and anti-oxidant potential of Feretia apodanthera was investigated in this study to evaluate its effectiveness. Methods The phytochemical, antioxidant and anti-inflammatory potential of root bark (n-Hexane, diethyl ether, ethanol and aqueous) extracts of Feretia apodanthera was investigated in this study. The extracts were subjected to various chemical tests for phytochemical constituents; their antioxidant activity was determined using in-vitro DPPH radical scavenging activity assay and their anti-inflammatory activity was determined using carrageenan induced paw oedema model. FTIR and GCMS analysis was done to determine the compounds present. Results Phytochemical screening of extracts revealed the presence of unsaturated steroids, triterpenes, cardiac glycosides, tannins, saponin and alkaloids. Vitamin C had a median inhibitory concentration (IC50) of 0.038 mg/ml which was lower than IC50 of all the extracts. Of all the extracts, ethanol extract had the lowest IC50 (0.044 mg/ml) which is comparable to vitamin C. Anti-inflammatory studies showed that the inflammation inhibition potential of 400 mg/kg body weight of all the extracts was significantly lower (p < 0.05) than the standard ketoprofen (50 mg/kg) at the first three hours but significantly higher (p < 0.05) at the fourth hour. At the fifth hour, the inflammation inhibition potential of diethyl ether, ethanol and aqueous extracts were significantly higher (p < 0.05) than that of the standard. FTIR analysis showed the presence of ketones, amines, alkenes and carboxylic groups. GCMS analysis revealed compounds that are potential anti-inflammatory agents. Conclusion This study revealed that extracts of Feretia apodanthera possess anti-inflammatory effects against right hind paw oedema of albino rats and can act as an effective antioxidant.
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Neuropharmacological and acute toxicological evaluation of ethanolic extract of Allamanda cathartica L. flowers and plumieride. Regul Toxicol Pharmacol 2017; 91:9-19. [DOI: 10.1016/j.yrtph.2017.10.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 09/29/2017] [Accepted: 10/02/2017] [Indexed: 11/24/2022]
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Andoh T, Uta D, Kato M, Toume K, Komatsu K, Kuraishi Y. Prophylactic Administration of Aucubin Inhibits Paclitaxel-Induced Mechanical Allodynia via the Inhibition of Endoplasmic Reticulum Stress in Peripheral Schwann Cells. Biol Pharm Bull 2017; 40:473-478. [PMID: 28381802 DOI: 10.1248/bpb.b16-00899] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Paclitaxel is a chemotherapeutic agent that causes peripheral neuropathy as its major dose-limiting side effect. However, the peripheral neuropathy is difficult to manage. A study we recently conducted showed that repetitive administration of aucubin as a prophylactic inhibits paclitaxel-induced mechanical allodynia. However, the mechanisms underlying the anti-allodynic activity of aucubin, which is a major component of Plantaginis Semen, was unclear. In addition to mechanical allodynia, aucubin inhibited spontaneous and mechanical stimuli-induced firing in spinal dorsal horn neurons; however, catalpol, a metabolite of aucubin, did not show these effects. Furthermore, paclitaxel induced the expression of CCAAT/enhancer-binding protein homologous protein, a marker of endoplasmic reticulum (ER) stress, in the sciatic nerve and a Schwann cell line (LY-PPB6 cells); however, this effect was inhibited by aucubin. These results suggest that aucubin inhibits paclitaxel-induced mechanical allodynia through the inhibition of ER stress in peripheral Schwann cells.
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Affiliation(s)
- Tsugunobu Andoh
- Department of Applied Pharmacology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
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Gupta G, Dahiya R, Dua K, Chellappan DK, Tiwari J, Narayan Sharma G, Kumar Singh S, Mishra A, Kumar Sharma R, Agrawal M. Anticonvulsant effect of liraglutide, GLP-1 agonist by averting a change in GABA and brain glutathione level on picrotoxin-induced seizures. EXCLI JOURNAL 2017; 16:752-754. [PMID: 28827991 PMCID: PMC5547386 DOI: 10.17179/excli2017-283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 05/16/2017] [Indexed: 11/16/2022]
Affiliation(s)
- Gaurav Gupta
- School of Pharmacy, Jaipur National University, Jagatpura 302017, Jaipur, India.,School of Medicine and Public Health, University of Newcastle, Newcastle, NSW 2308, Australia
| | - Rajiv Dahiya
- Laboratory of Peptide Research and Development, School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad & Tobago, West Indies
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Dinesh Kumar Chellappan
- Department of Life Science, International Medical University, Bukit Jalil, Kuala Lumpur, Malaysia
| | - Juhi Tiwari
- School of Pharmacy, Jaipur National University, Jagatpura 302017, Jaipur, India
| | | | - Santosh Kumar Singh
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura 302017, Jaipur, India
| | - Anurag Mishra
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura 302017, Jaipur, India
| | - Rakesh Kumar Sharma
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura 302017, Jaipur, India
| | - Mohit Agrawal
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura 302017, Jaipur, India
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