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N’goka V, Oyegue Liabagui SL, Sima Obiang C, Begouabe H, Nsonde Ntandou GF, Imboumy-Limoukou RK, Biteghe-Bi-Essone JC, Kumulungui BS, Lekana-Douki JB, Abena AA. Pentaclethra eetveldeana Leaves from Four Congo-Brazzaville Regions: Antioxidant Capacity, Anti-Inflammatory Activity and Proportional Accumulation of Phytochemicals. Plants (Basel) 2023; 12:3271. [PMID: 37765435 PMCID: PMC10535678 DOI: 10.3390/plants12183271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/16/2023] [Accepted: 07/18/2023] [Indexed: 09/29/2023]
Abstract
Oxidative stress and inflammation play a key role in the occurrence of neurodegenerative diseases. Traditionally, Pentaclethra eetveldeana leaves are used in dementia treatment. Therefore, this study aimed to evaluate the antioxidant and anti-inflammatory activities as well as the phytochemical composition of Pentaclethra eetveldeana leaves from four Congo-Brazzaville regions. The 1.2-diphenyl-1-picrylhydrazyl radical-scavenging, β-carotene bleaching and molybdenum reduction assays were used to assess the antioxidant activity. The protein denaturation and erythrocyte membrane stabilization tests were used to analyze the anti-inflammatory activity. Phytochemical screening, the quantification of polyphenols by spectrophotometry, as well as the determination of extraction yields were carried out. It was found that the extracts reduced molybdenum; furthermore, compared to ascorbic acid, they showed better antiradical activity and inhibited lipid peroxidation. Moreover, globally, the membrane-stabilizing power of the aqueous extracts was superior or comparable to diclofenac, while the same extracts were less effective for the inhibition of denaturation. All of the aqueous extracts contained polyphenols, saponins, alkaloids, anthraquinones, reducing sugar and cardiotonic glycosides. The total polyphenols, tannins and proanthocyanidins are produced proportionally from one region to another. Finally, the leaves from Brazzaville and Boundji contain flavonols, while those from Makoua and Owando contain flavones. Thus, Pentaclethra eetveldeana leaves contribute to traditional dementia treatment through their antioxidant and anti-inflammatory properties.
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Affiliation(s)
- Victor N’goka
- Laboratoire de Pharmacodynamie et de Physiopathologie Expérimentale (L2PE), Faculté des Sciences et Techniques, Université Marien Ngouabi (UMNG), Brazzaville BP 69, Congo
- Unité d’Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre Interdisciplinaire et de Recherches Médicales de Franceville (CIRMF), Franceville BP 769, Gabon
| | - Sandrine Lydie Oyegue Liabagui
- Unité d’Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre Interdisciplinaire et de Recherches Médicales de Franceville (CIRMF), Franceville BP 769, Gabon
- Département de Biologie, Faculté des Sciences, Université des Sciences et Techniques de Masuku (USTM), Franceville BP 876, Gabon
- Ecole Doctorale Régionale d’Afrique Centrale en Infectiologie Tropicale (ECODRAC), Université des Sciences et Techniques de Masuku (USTM), Franceville BP 876, Gabon
| | - Cédric Sima Obiang
- Laboratoire de Recherches en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku (USTM), Franceville BP 876, Gabon
| | - Herman Begouabe
- Laboratoire de Recherches en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku (USTM), Franceville BP 876, Gabon
| | - Gelase Fredy Nsonde Ntandou
- Laboratoire de Pharmacodynamie et de Physiopathologie Expérimentale (L2PE), Faculté des Sciences et Techniques, Université Marien Ngouabi (UMNG), Brazzaville BP 69, Congo
| | - Romeo Karl Imboumy-Limoukou
- Unité d’Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre Interdisciplinaire et de Recherches Médicales de Franceville (CIRMF), Franceville BP 769, Gabon
| | - Jean-Claude Biteghe-Bi-Essone
- Unité d’Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre Interdisciplinaire et de Recherches Médicales de Franceville (CIRMF), Franceville BP 769, Gabon
| | - Brice Serge Kumulungui
- Unité d’Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre Interdisciplinaire et de Recherches Médicales de Franceville (CIRMF), Franceville BP 769, Gabon
| | - Jean Bernard Lekana-Douki
- Unité d’Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre Interdisciplinaire et de Recherches Médicales de Franceville (CIRMF), Franceville BP 769, Gabon
- Département de Parasitologie-Mycologie Médecine Tropicale, Faculté de Médecine, Université des Sciences de la Santé (USS), Libreville BP 4009, Gabon
| | - Ange Antoine Abena
- Laboratoire de Biochimie et de Pharmacologie (LBP), Faculté des Sciences de la Santé, Université Marien Ngouabi (UMNG), Brazzaville BP 69, Congo
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Essono Mintsa M, Kumulungui BS, Obiang CS, Dussert E, Choque E, Herfurth D, Ravallec R, Ondo JP, Mesnard F. Cytotoxicity and Identification of Antibacterial Compounds from Baillonella toxisperma Bark Using a LC-MS/MS and Molecular Networking Approach. Metabolites 2023; 13:metabo13050599. [PMID: 37233640 DOI: 10.3390/metabo13050599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/20/2023] [Accepted: 04/20/2023] [Indexed: 05/27/2023] Open
Abstract
Baillonella toxisperma is a medicinal plant used in northern Gabon to treat microbial diseases. It is a plant well-known by local populations, but very few studies have focused on the molecules responsible for the antibacterial activities of B. toxisperma. This study proposes a dereplication strategy based on molecular networking generated from HPLC-ESI-Q/TOF data, allowing investigation of the molecules responsible for the antibacterial activity of B. toxisperma. From this strategy, eighteen compounds were putatively identified. All of these compounds belonged mainly to five families of natural compounds, including phenylpropanolamines, stilbenes, flavonoids, lignans and phenolic glycosides. The chemical study carried out from the bark of B. toxisperma allowed us to identify, for the first time, compounds such as resveratrol and derivatives, epicatechin, epigallocatechin and epigallocatechin gallate. In addition, antibacterial activity (diffusion method and microdilution) and cytotoxicity (Cell Counting Kit-8 (CCK-8 Assay)) in vitro were evaluated. The crude ethanolic extract, as well as the fractions of B. toxisperma, showed significant antibacterial activity. However, the ethanolic fractions F2 and F4 presented high antibacterial activity compared to the crude extract. Cytotoxicity studies on colon-cancer cells (Caco-2) and human keratinocyte cells (HaCaT) showed moderate cytotoxicity in both cell types. This study clearly shows the therapeutic potential of the ethanolic extract of the bark of B. toxisperma and provides information on the phytochemical composition and bioactive compounds of the plant.
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Affiliation(s)
- Morel Essono Mintsa
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, 80000 Amiens, France
- Centre Interdisciplinaire de Recherches Médicales de Franceville (CIRMF), Franceville P.O. Box 769, Gabon
- Laboratoire Innovation Matériau Bois Habitat (LIMBHA), Ecole Supérieure du Bois, 7 Rue Christian Pauc, 44306 Nantes, France
| | - Brice Serge Kumulungui
- Centre Interdisciplinaire de Recherches Médicales de Franceville (CIRMF), Franceville P.O. Box 769, Gabon
| | - Cédric Sima Obiang
- Laboratoire de Recherches en Biochimie (LAREBIO), Université des Sciences et Techniques de Masuku, Franceville P.O. Box 943, Gabon
| | - Elodie Dussert
- UMRt BioEcoAgro 1158-INRAE, Institut Charles Violette, Université de Lille, 59655 Lille, France
| | - Elodie Choque
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, 80000 Amiens, France
| | - Damien Herfurth
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, 80000 Amiens, France
| | - Rozenn Ravallec
- UMRt BioEcoAgro 1158-INRAE, Institut Charles Violette, Université de Lille, 59655 Lille, France
| | - Joseph-Privat Ondo
- Laboratoire de Recherches en Biochimie (LAREBIO), Université des Sciences et Techniques de Masuku, Franceville P.O. Box 943, Gabon
| | - François Mesnard
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, 80000 Amiens, France
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Sima Obiang C, Ndong Mba T, Ondo JP, Ngoua Meye Misso RL, Orango Bourdette JO, Otogo N'Nang E, Mbogho Abogho J, Jolinom Mbot E, Obame Engonga LC, Nsi Emvo E. Toxicity, Antibacterial, and Phytochemical Analyses of Antrocaryon klaineanum Pierre Extracts. Adv Pharmacol Pharm Sci 2023; 2023:9304681. [PMID: 37128201 PMCID: PMC10148743 DOI: 10.1155/2023/9304681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 03/18/2023] [Accepted: 04/07/2023] [Indexed: 05/03/2023] Open
Abstract
Medicinal plants are traditionally used in Gabon to treat several types of illnesses. The study's purpose was to determine the toxic, antibacterial, and anti-inflammatory effects of Antrocaryon klaineanum Pierre extracts and to characterize their phytochemical compounds. Toxicity was evaluated on frog tadpoles (Phrynobatrachus africanus Hallowell). The microorganism susceptibility test was performed by the diffusion method, while minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were evaluated using the microdilution technique. Anti-inflammatory activity was tested through protein denaturation and membrane stabilization methods. Chromatography and molecular network techniques were used to characterize chemical compounds. The lethality test showed that the lethal concentration (LC50) increased from 110.03 ± 1.25 to 15.86 ± 2.21 μg/mL after 24 and 96 hours of exposure. In tadpoles exposed to 7.81 μg/mL extract, the first mortalities (12.5%) were observed on the fifth day of exposure. A relative decrease in mature erythrocytes exposed to plant extracts was observed. The antibacterial activity shows that the Ak F2, Ak F3, and Ak F4 fractions (from the water-ethanol crude extract) gave the greatest antibacterial activities compared to the other extracts. The water, water-acetone, and water-ethanol extracts showed good inhibition of denaturation. The haemolysis test shows that the extracts exhibited good anti-inflammatory activities. Phytochemical characterisation revealed four major compounds, including monogallate epicatechin and hydroxy-ergostadian. The molecular network revealed five main clusters. Our study shows that A. klaineanum Pierre could be a promising natural product for the isolation of molecules with potential biological activities.
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Affiliation(s)
- Cédric Sima Obiang
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Thiery Ndong Mba
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, Franceville, Gabon
- Laboratoire de Biologie Moléculaire et Cellulaire (LABMC), Faculté des Sciences Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Joseph Privat Ondo
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Rick Léonid Ngoua Meye Misso
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Juliette Ornely Orango Bourdette
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Elvis Otogo N'Nang
- Laboratoire de Chimie des Substances Naturelles (LACSN), Institut Supérieure d'Agronomie et de Biotechnologie, Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Joefred Mbogho Abogho
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Elvis Jolinom Mbot
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Louis Clément Obame Engonga
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Edouard Nsi Emvo
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, Franceville, Gabon
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Obiang CS, Ndong Mba T, Meye Misso RLN, Orango Bourdette JO, Privat Ondo J, Ndong Atome GR, Obame Engonga LC, Emvo EN. Ethnopharmacological Study and Antibacterial Activities of Some Plants Used in Traditional Medicine for the Treatment of Diarrheal Diseases in Gabon. TIM 2022. [DOI: 10.18502/tim.v7i4.11489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The purpose of this work was to develop ethnopharmacological and biological studies of plants used in traditional medicine for the treatment of diarrheal diseases. This study results in scientific data that validates the uses of these plants in traditional medicine. Firstly, ethnopharmacological surveys were conducted with a few traditional healers from the provinces of Estuaire, Haut Ogooué and Woleu-Ntem in Gabon. Next, ethnobotanical data such as percentage of families, species, routes of administration, methods of preparation, parts used and number of plant names were analyzed and summarized. Finally, the antibacterial activities of some plants have been evaluated by diffusion and microdilution methods. Thirty-four (34) traditional healers were interviewed. A total of 90 plant species were identified during this study. They belong to 44 families, the most represented were Leguminoseae (13.33%), Apocynaceae (7.78%), Annonaceae (5.55%), Euphorbiaceae (4.44%) and Anacardiaceae (4.44%). Trees were used more (44.44%) than shrubs (32.22%), herbaceous plants (16.67%) and lianas (6.67%). The drug administration was mainly oral (84.62%) and by the anal route. Decoction and maceration were the two most used methods of preparation. Among identified plants, twenty-seven (27) plant extracts were subjected to microbiological analyzes. Plant extracts tested were active on Gram-negative and Gram-positive bacteria. Cola nitida extracts gave the best antibacterial activity against Enterococcus faecalis 103907 CIP. This study identified 90 antidiarrheal plant species and clearly shows the antimicrobial potential of several medicinal species.
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Sima Obiang C, Ndong Mba T, Ngoua Meye Misso RL, Orango Bourdette JO, Ndong Atome GR, Ondo JP, Obame Engonga LC. Contribution to vector control by essential oils of Aucoumea klaineana, Canarium schweinfurthii, Cymbopogon nardus, Dacryodes edulis and Eucalyptus citriodora from Gabon. J Herbmed Pharmacol 2022. [DOI: 10.34172/jhp.2022.56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Introduction: Aucoumea klaineana, Canarium schweinfurthii, Cymbopogon nardus, Dacryodes edulis, and Eucalyptus citriodora are of Gabonese origin, believed to have insecticidal activity. This study contributes to vector control by the insecticidal activities (larvicidal and ovicidal) of five essential oils from these plants against Anopheles gambiae, a major vector of malaria in Gabon. Methods: The essential oils were extracted by hydrodistillation. Larvicidal and ovicidal effects of essential oils were performed using different concentrations on third and fourth instar larvae and eggs of A. gambiae vectors. The effects of these oils were examined on the mortality rate of larvae and eggs. Results: The essential oils of A. klaineana, C. schweinfurthii, C. nardus, A. edulis, and E. citriodora showed greater activity against mosquito larvae (7.33 < LC50 < 107.14) compared to eggs (22.80 < LC50 < 64.63). D. edulis showed the highest activity against Anopheles gambiae eggs and larvae. Of all plants, essential oils from A. klaineana showed the lowest activity of A. gambiae eggs and larvae. Larvae were more sensitive than eggs. All essential oils were toxic to the various aquatic vectors of malaria. Conclusion: The study reveals the potential ovicidal efficacy and larvicidal activity of these plants against A. gambiae.
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Affiliation(s)
- Cédric Sima Obiang
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, BP 769 Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, BP 943 Franceville, Gabon
| | - Thiery Ndong Mba
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, BP 769 Franceville, Gabon
- Laboratoire de Biologie Moléculaire et Cellulaire (LABMC), Faculté des Sciences Université des Sciences et Techniques de Masuku, P. O. Box 943 Franceville, Gabon
| | - Rick-Léonid Ngoua Meye Misso
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, BP 769 Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, BP 943 Franceville, Gabon
| | - Juliette Ornely Orango Bourdette
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, BP 769 Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, BP 943 Franceville, Gabon
| | - Guy Roger Ndong Atome
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, BP 769 Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, BP 943 Franceville, Gabon
| | - Joseph Privat Ondo
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, BP 769 Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, BP 943 Franceville, Gabon
| | - Louis-Clément Obame Engonga
- Laboratoire de Recherche en Biochimie (LAREBIO), Faculté des Sciences, Université des Sciences et Techniques de Masuku, BP 769 Franceville, Gabon
- Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, BP 943 Franceville, Gabon
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Essono Mintsa M, Otogo N’nang E, Choque É, Siah A, Jacquin J, Muchembled J, Molinié R, Roulard R, Cailleu D, Beniddir MA, Sima Obiang C, Ondo JP, Kumulungui B, Mesnard F. Combined LC-MS/MS and Molecular Networking Approach Reveals Antioxidant and Antimicrobial Compounds from Erismadelphus exsul Bark. Plants (Basel) 2022; 11:plants11111505. [PMID: 35684277 PMCID: PMC9182967 DOI: 10.3390/plants11111505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/28/2022] [Accepted: 05/28/2022] [Indexed: 05/19/2023]
Abstract
Erismadelphus exsul Mildbr bark is widely used in Gabonese folk medicine. However, little is known about the active compounds associated with its biological activities. In the present study, phytochemical profiling of the ethanolic extract of Erismadelphus exsul was performed using a de-replication strategy by coupling HPLC-ESI-Q/TOF with a molecular network approach. Eight families of natural compounds were putatively identified, including cyclopeptide alkaloids, esterified amino acids, isoflavonoid- and flavonoid-type polyphenols, glycerophospholipids, steroids and their derivatives, and quinoline alkaloids. All these compounds were identified for the first time in this plant. The use of molecular networking obtained a detailed phytochemical overview of this species. Furthermore, antioxidant (2,2-diphenyl-1-picryl-hydrazylhydrate (DPPH) and ferric reducing capacity (FRAP)) and in vitro antimicrobial activities were assessed. The crude extract, as well as fractions obtained from Erismadelphus exsul, showed a better reactivity to FRAP than DPPH. The fractions were two to four times more antioxidant than ascorbic acid while reacting to FRAP, and there was two to nine times less antioxidant than this reference while reacting to DPPH. In addition, several fractions and the crude extract exhibited a significant anti-oomycete activity towards the Solanaceae phytopathogen Phytophthora infestans in vitro, and, at a lower extent, the antifungal activity against the wheat pathogen Zymoseptoria tritici had growth inhibition rates ranging from 0 to 100%, depending on the tested concentration. This study provides new insights into the phytochemical characterization and the bioactivities of ethanolic extract from Erismadelphus exsul bark.
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Affiliation(s)
- Morel Essono Mintsa
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, F-80000 Amiens, France; (M.E.M.); (É.C.); (R.M.); (R.R.)
| | - Elvis Otogo N’nang
- Laboratoire de Substances Naturelles, Université des Sciences et Techniques de Masuku, Franceville P.O. Box 943, Gabon
- Correspondence: (E.O.N.); (F.M.); Tel.: +241-062801523 (E.O.N.); +33-684189115 (F.M.)
| | - Élodie Choque
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, F-80000 Amiens, France; (M.E.M.); (É.C.); (R.M.); (R.R.)
| | - Ali Siah
- UMRt BioEcoAgro 1158-INRAE, JUNIA, Équipe Métabolites Spécialisés D’origine Végétale, Institut Charles Viollette, F-59000 Lille, France; (A.S.); (J.J.); (J.M.)
| | - Justine Jacquin
- UMRt BioEcoAgro 1158-INRAE, JUNIA, Équipe Métabolites Spécialisés D’origine Végétale, Institut Charles Viollette, F-59000 Lille, France; (A.S.); (J.J.); (J.M.)
| | - Jerome Muchembled
- UMRt BioEcoAgro 1158-INRAE, JUNIA, Équipe Métabolites Spécialisés D’origine Végétale, Institut Charles Viollette, F-59000 Lille, France; (A.S.); (J.J.); (J.M.)
| | - Roland Molinié
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, F-80000 Amiens, France; (M.E.M.); (É.C.); (R.M.); (R.R.)
| | - Romain Roulard
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, F-80000 Amiens, France; (M.E.M.); (É.C.); (R.M.); (R.R.)
| | - Dominique Cailleu
- Plateforme Analytique, Université de Picardie Jules Verne, 33 Rue Saint Leu, F-80039 Amiens, France;
| | - Mehdi A. Beniddir
- Équipe Chimie des Substances Naturelles BioCIS, CNRS, Université Paris Saclay, 5 Rue J.-B. Clément, F-92290 Châtenay-Malabry, France;
| | - Cédric Sima Obiang
- Laboratoire de Recherches en Biochimie, Université des Sciences et Techniques de Masuku, Franceville P.O. Box 943, Gabon; (C.S.O.); (J.-P.O.)
| | - Joseph-Privat Ondo
- Laboratoire de Recherches en Biochimie, Université des Sciences et Techniques de Masuku, Franceville P.O. Box 943, Gabon; (C.S.O.); (J.-P.O.)
| | - Brice Kumulungui
- Centre International de Recherches Médicales de Franceville P.O. Box 943, Gabon;
| | - François Mesnard
- UMRt BioEcoAgro 1158-INRAE, BIOPI, Université de Picardie Jules Verne, 1 Rue des Louvels, F-80000 Amiens, France; (M.E.M.); (É.C.); (R.M.); (R.R.)
- Correspondence: (E.O.N.); (F.M.); Tel.: +241-062801523 (E.O.N.); +33-684189115 (F.M.)
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Orango-Bourdette JO, Beniddir MA, Otogo N'Nang E, Gallard JF, Ondo JP, Sima Obiang C, Rharrabti S, Miel C, Denis S, Obame Engonga LC, Le Pogam P. Structure elucidation of a new lanostane triterpene from Gabonese Ganoderma orbiforme fruiting bodies. Magn Reson Chem 2021; 59:1165-1170. [PMID: 34464012 DOI: 10.1002/mrc.5214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/25/2021] [Accepted: 08/28/2021] [Indexed: 06/13/2023]
Abstract
The structure and complete nuclear magnetic resonance (NMR) assignments of orbifomitellic acid, a novel lanostane triterpene isolated from the fruiting bodies of a Gabonese Ganoderma orbiforme (Polyporaceae), are reported. Within the vast catalogue of lanostanes documented from Ganoderma spp., orbifomitellic acid is the first disclosing a -COOH group at C-4.
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Affiliation(s)
- Juliette Ornely Orango-Bourdette
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
- Laboratoire de Recherche en Biochimie, Université des Sciences et Techniques de Masuku (USTM), Franceville, Gabon
| | - Mehdi A Beniddir
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Elvis Otogo N'Nang
- Laboratoire de Chimie des Substances Naturelles, Université des Sciences et Techniques de Masuku (USTM) BP 942, Franceville, Gabon
| | - Jean-François Gallard
- Institut de Chimie des Substances Naturelles, CNRS, ICSN UPR 2301, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Joseph Privat Ondo
- Laboratoire de Recherche en Biochimie, Université des Sciences et Techniques de Masuku (USTM), Franceville, Gabon
| | - Cédric Sima Obiang
- Laboratoire de Recherche en Biochimie, Université des Sciences et Techniques de Masuku (USTM), Franceville, Gabon
| | - Somia Rharrabti
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Corto Miel
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Stéphanie Denis
- CNRS, Institut Galien Paris-Saclay, Université Paris-Saclay, Châtenay-Malabry, France
| | - Louis Clément Obame Engonga
- Laboratoire de Recherche en Biochimie, Université des Sciences et Techniques de Masuku (USTM), Franceville, Gabon
| | - Pierre Le Pogam
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
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Obiang CS, Misso RLNM, Atome GRN, Obame RBM, Ondo JP, Engonga LCO, Emvo EN. Antimicrobial, antioxidant, anti-inflammatory and cytotoxic study of extracts of Guibourtia tessmanii (harms) J. Léonard from Gabon. Clin Phytosci 2021. [DOI: 10.1186/s40816-021-00278-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Gabonese flora abounds in a significant reserve of plants in medical matter. Thus, medicinal plants occupy a significant place in African pharmacopeia. Aim of this work was to evaluate the antimicrobial, antioxidant, anti-inflammatory and cytotoxic properties of extracts of Guibourtia tessmanii (Harms) J. Léonard.
Methods
The test for sensitivity to microorganisms was performed by the diffusion method, while the MICs and MBCs were evaluated by the microdilution technique. Antioxidant tests were performed by scavenging the DPPH and ABTS radicals. Anti-inflammatory activity was determined by protein denaturing and membrane stabilization methods. The cytotoxicity was evaluated on the tadpoles of the green frog.
Results
The antibacterial activity shows that the Gt F2 fraction and the water-acetone extract produced the greatest inhibitions. The water, water-ethanol and water-acetone extracts exhibited bactericidal effects on the majority of bacteria. In the case of trapping of the DPPH radical, the IC50 values varied from 6.92 ± 0.48 to 16.64 ± 0.20 μg/mL. For the decolouration of ABTS, oxidation was mainly inhibited by the water-acetetone, water-ethanol extracts and some fractions. The water and water-acetone extracts showed good inhibition of denaturation. The hemolysis test confirmed the good activities of the extracts. The lethal test showed that the LC50 drops from 171.37 ± 9.25 to 58.25 ± 7.21 μg/mL after 24 and 96 h of exposure. In tadpoles exposed to 7.81 μg / mL of extracts, the first mortalities (12.5%) were observed on the second day of exposure. From the ninth day, the mortality rate increased (25%) until the 16th day.
Conclusion
Our results show that Guibourtia tessmanii may be a promising product for the isolations of molecules responsible for biological activities.
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Otogo N'Nang E, Le Pogam P, Ndong Mba T, Sima Obiang C, Mouray E, Grellier P, Kumulungui B, Champy P, Beniddir MA. Targeted Isolation of Hemitheion from Mostuea brunonis, a Proposed Biosynthetic Intermediate of Theionbrunonines. J Nat Prod 2021; 84:1409-1413. [PMID: 33825474 DOI: 10.1021/acs.jnatprod.1c00143] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hemitheion (1), a new sulfur-containing vobasane-type indole alkaloid, was isolated, together with three known compounds, vobasine (2), gelsedine (3), and gelsemicine (4), from the alkaloid extract of the stems of Mostuea brunonis Didr. (Gelsemiaceae). Compound 1 could be straightforwardly isolated. Its structure was elucidated by a combination of spectroscopic methods. Besides corresponding to a formerly postulated biosynthetic intermediate toward theionbrunonines, hemitheion (1) stands among the few monomeric vobasanes lacking an oxygen at C-3. Hemitheion (1) showed moderate antiplasmodial activity in the micromolar range against the strain FcB1 of Plasmodium falciparum and no cytotoxic activity against the MRC-5 cell line at 20 μM.
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Affiliation(s)
- Elvis Otogo N'Nang
- Équipe "Chimie des Substances Naturelles" BioCIS, CNRS, Université Paris-Saclay, 5 Rue J.-B. Clément, 92290 Châtenay-Malabry, France
- Laboratoire de Chimie des Substances Naturelles, Département Science Fondamentale de l'Ingénieur (INSAB), Université des Sciences et Techniques de Masuku, BP 901 Franceville, Gabon
| | - Pierre Le Pogam
- Équipe "Chimie des Substances Naturelles" BioCIS, CNRS, Université Paris-Saclay, 5 Rue J.-B. Clément, 92290 Châtenay-Malabry, France
| | - Thiery Ndong Mba
- Laboratoire de Recherche en Biochimie, Université des Sciences et Techniques de Masuku, BP 901 Franceville, Gabon
| | - Cédric Sima Obiang
- Laboratoire de Recherche en Biochimie, Université des Sciences et Techniques de Masuku, BP 901 Franceville, Gabon
| | - Elisabeth Mouray
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Universités, CP52, 57 Rue Cuvier, 75005 Paris, France
| | - Philippe Grellier
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Universités, CP52, 57 Rue Cuvier, 75005 Paris, France
| | - Brice Kumulungui
- Laboratoire de Chimie des Substances Naturelles, Département Science Fondamentale de l'Ingénieur (INSAB), Université des Sciences et Techniques de Masuku, BP 901 Franceville, Gabon
| | - Pierre Champy
- Équipe "Chimie des Substances Naturelles" BioCIS, CNRS, Université Paris-Saclay, 5 Rue J.-B. Clément, 92290 Châtenay-Malabry, France
| | - Mehdi A Beniddir
- Équipe "Chimie des Substances Naturelles" BioCIS, CNRS, Université Paris-Saclay, 5 Rue J.-B. Clément, 92290 Châtenay-Malabry, France
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Ngoua Meye Misso RL, Nsole Biteghe FA, Obiang CS, Ondo JP, Gao N, Cervantes-Cervantes M, Vignaux G, Vergeade A, Engohang-Ndong J, Mendene HE, Mabika B, Abessolo FO, Obame Engonga LC, De La Croix Ndong J. Effect of aqueous extracts of Ficus vogeliana Miq and Tieghemella africana Pierre in 7,12-Dimethylbenz(a)anthracene -induced skin cancer in rats. J Ethnopharmacol 2020; 263:113244. [PMID: 32800931 DOI: 10.1016/j.jep.2020.113244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/01/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Skin cancer is the most common form of cancer responsible for considerable morbidity and mortality. Tieghemella africana and Ficus vogeliana are used in traditional medicine to treat cancers. AIM OF THE STUDY Therefore, the aim of this study was to investigate the antioxidant, antiangiogenic and anti-tumor activities of these plant extracts. MATERIALS AND METHODS To achieve it, phytochemical screening, antioxidant activity and antiangiogenic activity were assessed. Thereafter, the anti-tumor activity was determined using skin tumorigenesis induced by 7,12-dimethylbenz[a]anthracene. RESULTS The phytochemical result analysis showed that both plant extracts were rich in polyphenols, alkaloids and terpene compounds and possessed good antioxidant activity based on DPPH radical scavenging (IC50 = 9.70 μg/mL and 4.60 μg/mL and AAI values of 5.20 and 10.88) and strong total antioxidant capacity (115.44 VtCE (mg)/g of dry plant extract and 87.37 VtCE (mg)/g of dry plant extract, respectively). Additionally, both plant extracts possessed antiangiogenic activities (IC50 = 53.43 μg/mL and 92.68 μg/mL, respectively), which correlated with significant antitumor activities when using 35 mg/kg (65.02% and 77.54%) and 70 mg/kg of extracts (81.07% and 88.18%). CONCLUSIONS In summary, this study illustrates the promising usage of Tieghemella africana and Ficus vogeliana plant extracts in treating skin cancer. However, further characterization of the extracts must be performed to isolate the most active anticancer compound.
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Affiliation(s)
| | - Fleury Augustin Nsole Biteghe
- Department of Radiation Oncology and Biomedical Sciences, Cedars-Sinai Medical, 8700, Beverly Blvd, Los Angeles, USA
| | - Cédric Sima Obiang
- Universite des Sciences et Techniques de Masuku (USTM), Department of Chemistry, Franceville, Gabon
| | - Joseph-Privat Ondo
- Universite des Sciences et Techniques de Masuku (USTM), Department of Chemistry, Franceville, Gabon
| | - Nan Gao
- Rutgers University School of Arts & Sciences, Federated Departments of Biological Sciences, Newark, NJ, USA
| | - Miguel Cervantes-Cervantes
- Rutgers University School of Arts & Sciences, Federated Departments of Biological Sciences, Newark, NJ, USA
| | | | | | | | - Hugue Ella Mendene
- Université des Sciences de La Santé, Département de Chimie et Biochimie, Libreville, Gabon
| | - Barthelemy Mabika
- Université des Sciences de La Santé, Département D'Anatomie Pathologie, Libreville, Gabon
| | - Félix Ovono Abessolo
- Université des Sciences de La Santé, Département de Chimie et Biochimie, Libreville, Gabon
| | | | - Jean De La Croix Ndong
- Arctic Slope Regional Corporation Federal, Arlington, VA, USA; New York University, School of Medicine, Department of Orthopedic Surgery, New York, USA
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Obiang CS, Ondo JP, Atome GRN, Engonga LCO, Siawaya JFD, Emvo EN. Phytochemical screening, antioxidant and antimicrobial potential of stem barks of Coula edulis Baill. Pseudospondias longifolia Engl. and Carapa klaineana Pierre. from Gabon. Asian Pacific Journal of Tropical Disease 2016. [DOI: 10.1016/s2222-1808(16)61086-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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