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Fongnzossie Fedoung E, Biwole AB, Nyangono Biyegue CF, Ngansop Tounkam M, Akono Ntonga P, Nguiamba VP, Essono DM, Forbi Funwi P, Tonga C, Nguenang GM, Kemeuze V, Sonwa DJ, Tsabang N, Bouelet IS, Tize Z, Boum AT, Momo Solefack MC, Betti JL, Nouga Bissoue A, Lehman LG, Mapongmetsem PM, Nneme Nneme L, Ngono Ngane RA, Ngogang Yonkeu J. A review of Cameroonian medicinal plants with potentials for the management of the COVID-19 pandemic. ADV TRADIT MED (ADTM) 2021. [PMCID: PMC7994110 DOI: 10.1007/s13596-021-00567-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Evariste Fongnzossie Fedoung
- Laboratory of Forest Resources and Wood Valorization, University of Douala, PO Box 1872, Douala, Cameroon
- Laboratory of Process Engineering, University of Douala, PO Box 1872, Douala, Cameroon
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
- Advanced Technical Teachers Training School for Technical Education, University of Douala,, PO Box 1872, Douala, Cameroon
| | - Achille Bernard Biwole
- Laboratory of Forest Resources and Wood Valorization, University of Douala, PO Box 1872, Douala, Cameroon
| | | | - Marlene Ngansop Tounkam
- Laboratory of Botany, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
| | - Patrick Akono Ntonga
- Laboratory of Animal Biology, Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 2701, Douala, Cameroon
| | - Véronique Priscille Nguiamba
- Advanced Technical Teachers Training School for Technical Education, University of Douala,, PO Box 1872, Douala, Cameroon
| | - Damien Marie Essono
- Laboratory of Botany, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
| | - Preasious Forbi Funwi
- Laboratory of Botany, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
| | - Calvin Tonga
- Laboratory of Animal Biology, Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 2701, Douala, Cameroon
| | - Guy Merlin Nguenang
- Laboratory of Botany, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
| | - Victor Kemeuze
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
| | - Denis Jean Sonwa
- Center for International Forestry Research, PO Box 2008, Messa, Yaoundé, Cameroon
| | - Nole Tsabang
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
| | | | - Zra Tize
- Laboratory of Process Engineering, University of Douala, PO Box 1872, Douala, Cameroon
| | | | - Marie Caroline Momo Solefack
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
- Laboratory of Applied Botany, University of Dschang, PO Box 67, Dschang, Cameroon
| | - Jean Lagarde Betti
- Laboratory of Plant Biology and Physiology, University of Douala, P.O. Box 24157, Douala, Cameroon
| | - Achille Nouga Bissoue
- Laboratory of Process Engineering, University of Douala, PO Box 1872, Douala, Cameroon
| | - Leopold Gustave Lehman
- Laboratory of Animal Biology, Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 2701, Douala, Cameroon
| | - Pierre Marie Mapongmetsem
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
| | - Leandre Nneme Nneme
- Advanced Technical Teachers Training School for Technical Education, University of Douala,, PO Box 1872, Douala, Cameroon
| | | | - Jeanne Ngogang Yonkeu
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
- Cameroon Academy of Science, Douala, Cameroon
- Université des Montagnes, Bangangté, Cameroon
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Tonga C, Ngo Bayoi C, Tchanga FC, Yengue JF, Wepnje GB, Nyabeyeu Nyabeyeu H, Kangam L, Koudjip Nono L, Akono Ntonga P, Lehman LG. Schistosomiasis among pregnant women in Njombe-Penja health district, Cameroon. J Infect Dev Ctries 2019; 13:1150-1158. [PMID: 32088703 DOI: 10.3855/jidc.11767] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 09/12/2019] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Schistosomiasis is a neglected tropical disease with endemic foci in Cameroon. Epidemiological data on schistosomiasis in pregnancy are scarce in the country. This study describes the prevalence, diversity and factors associated with schistosomiasis in pregnant women in Njombe-Penja where schistosomiasis was first reported in 1968. METHODOLOGY Two hundred and eighty-two (282) pregnant women were enrolled at first antenatal consultation between April and December 2016. A questionnaire was used to document socio-economic and obstetric information. Stool and terminal urine samples were collected and analysed using Kato-Katz/Formol-Ether concentration techniques and centrifugation methods respectively. Haemoglobin concentration was measured from finger prick blood, using an URIT®-12 electronic haemoglobinometer. Bivariate and logistic regression were used for statistical analyses with Epi-Info version 7.2.1.0. Statistical significance level was set at 0.05. RESULTS The overall prevalence of schistosomiasis was 31.91%. Schistosoma guineensis, S. haematobium and S. mansoni infections were found in 0.35% (n = 1), 4.96% (n = 14) and 28.01% (n = 79) of participants, respectively. Co-infection with two species of Schistosoma was found in 4.44% of these women. The prevalence of this disease was significantly higher in younger women (≤ 20 years old) and among residents of Njombe. All S. haematobium infected women were anemic and infection was associated with significantly lower haemoglobin levels (p = 0.02). CONCLUSION The prevalence of schistosomiasis is high among pregnant women in Njombe-Penja, with some adverse effects on blood levels. Three Schistosoma species were found. Female of childbearing age should be considered for mass drug administration.
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Affiliation(s)
- Calvin Tonga
- Faculty of Science, University of Douala, Douala, Littoral region, Cameroon.
| | - Charlie Ngo Bayoi
- Faculty of Science, University of Douala, Douala, Littoral region, Cameroon.
| | | | | | | | | | - Lafortune Kangam
- Faculty of Science, University of Yaounde I, Yaoundé, Centre region, Cameroon.
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Akono Ntonga P, Baldovini N, Mouray E, Mambu L, Belong P, Grellier P. Activity of Ocimum basilicum, Ocimum canum, and Cymbopogon citratus essential oils against Plasmodium falciparum and mature-stage larvae of Anopheles funestus s.s. ACTA ACUST UNITED AC 2014; 21:33. [PMID: 24995776 PMCID: PMC4082313 DOI: 10.1051/parasite/2014033] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 06/23/2014] [Indexed: 11/14/2022]
Abstract
The biological activities of essential oils from three plants grown in Cameroon: Ocimum basilicum, Ocimum canum, and Cymbopogon citratus were tested against Plasmodium falciparum and mature-stage larvae of Anopheles funestus. Gas chromatography and gas chromatography - mass spectrometry analyses showed that the main compounds are geranial, 1,8-cineole and linalool in C. citratus, O. canum and O. basilicum, respectively. Larvicidal tests carried out according to the protocol recommended by the World Health Organization showed that the essential oil of leaves of C. citratus is the most active against larvae of An. funestus (LC50 values = 35.5 ppm and 34.6 ppm, respectively, for larval stages III and IV after 6 h of exposure). Besides, the in vitro anti-plasmodial activity evaluated by the radioisotopic method showed that the C. citratus oil is the most active against P. falciparum, with an IC50 value of 4.2 ± 0.5 μg/mL compared with O. canum (20.6 ± 3.4 μg/mL) and O. basilicum (21 ± 4.6 μg/mL). These essential oils can be recommended for the development of natural biocides for fighting the larvae of malaria vectors and for the isolation of natural products with anti-malarial activity.
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Affiliation(s)
- Patrick Akono Ntonga
- Laboratory of Animal Biology, Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 24157, Douala, Cameroon
| | - Nicolas Baldovini
- Institut de Chimie de Nice UMR 7272, Faculté des Sciences, University of Nice Sophia Antipolis, Parc Valrose, 06108 Nice, France
| | - Elisabeth Mouray
- Muséum National d'Histoire Naturelle, UMR 7245 CNRS, CP 52, 61 rue Buffon, 75231 Paris Cedex 05, France
| | - Lengo Mambu
- Université de Limoges, Laboratoire de Chimie des Substances Naturelles, EA 1069, Institut GEIST, Faculté de Pharmacie, 2 rue Docteur Marcland, 87025 Limoges Cedex, France
| | - Philippe Belong
- Higher Teacher Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Philippe Grellier
- Muséum National d'Histoire Naturelle, UMR 7245 CNRS, CP 52, 61 rue Buffon, 75231 Paris Cedex 05, France
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