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Aguirre PAU, Martins KM, López CDD, Sánchez FO, Castaño AT, Velásquez CMR, Vidal AP. Effect of nanoformulation Azadirachta indica on some factors associated with the vectorial capacity and competence of Anopheles aquasalis experimentally infected with Plasmodium vivax. Acta Trop 2024; 255:107223. [PMID: 38642694 DOI: 10.1016/j.actatropica.2024.107223] [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: 10/22/2023] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/22/2024]
Abstract
Malaria remains a highly prevalent infectious disease worldwide, particularly in tropical and subtropical regions. Effectively controlling of mosquitoes transmitting of Plasmodium spp. is crucial in to control this disease. A promising strategy involves utilizing plant-derived products, such as the Neem tree (Azadirachta indica), known for its secondary metabolites with biological activity against various insect groups of agricultural and public health importance. This study investigated the effects of a nanoformulation prototype Neem on factors linked to the vector competence of Anopheles aquasalis, a malaria vector in Latin America. Different concentrations of the nanoformulation were supplied through sugar solution and blood feeding, assessing impacts on longevity, fecundity, fertility, and transgenerational survival from larvae to adults. Additionally, the effects of the Neem nanoformulation and NeemAZAL® formulation on the sporogonic cycle of P. vivax were evaluated. Overall, significant impacts were observed at 100 ppm and 1,000 ppm concentrations on adult survival patterns and on survival of the F1 generation. A trend of reduced oviposition and hatching rates was also noted in nanoformulation-consuming groups, with fertility and fecundity declining proportionally to the concentration. Additionally, a significant decrease in the infection rate and intensity of P. vivax was observed in the 1,000 ppm group, with a mean of 3 oocysts per female compared to the control's 27 oocysts per female. In the commercial formulation, the highest tested concentration of 3 ppm yielded 5.36 oocysts per female. Concerning sporozoite numbers, there was a reduction of 52 % and 87 % at the highest concentrations compared to the control group. In conclusion, these findings suggest that the A. indica nanoformulation is a potential as a tool for malaria control through reduction in the vector longevity and reproductive capacity, possibly leading to decreased vector population densities. Moreover, the nanoformulation interfered with the sporogonic development of P. vivax. However, further basic research on Neem formulations, their effects, and mechanisms of action is imperative to gain a more specific perspective for safe field implementation.
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Affiliation(s)
| | - Keillen Monick Martins
- Laboratório de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, FIOCRUZ Amazônia, Brazil
| | | | | | | | | | - Adriana Pabón Vidal
- Grupo Malaria, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
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2
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Evbuomwan IO, Stephen Adeyemi O, Oluba OM. Indigenous medicinal plants used in folk medicine for malaria treatment in Kwara State, Nigeria: an ethnobotanical study. BMC Complement Med Ther 2023; 23:324. [PMID: 37716985 PMCID: PMC10504731 DOI: 10.1186/s12906-023-04131-4] [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: 03/31/2023] [Accepted: 08/17/2023] [Indexed: 09/18/2023] Open
Abstract
BACKGROUND Folk medicine is crucial to healthcare delivery in the underdeveloped countries. It is frequently used as a primary treatment option or as a complementary therapy for malaria. Malaria is a deadly disease which greatly threatens global public health, claiming incredible number of lives yearly. The study was aimed at documenting the medicinal plants used for malaria treatment in folk medicine in Kwara State, Nigeria. METHODS Ethnobotanical information was collected from selected consenting registered traditional medicine practitioners (TMPs) through oral face-to-face interviews using in-depth, semi-structured interview guide. The ethnobotanical data were analysed, and descriptive statistical methods were used to compile them. RESULTS Sixty-two indigenous medicinal plants, including 13 new plants, used for malaria treatment were identified in this study. The TMPs preferred decoction in aqueous solvent (34%) and steeping in decaffeinated soft drink (19%) for herbal preparations. Oral administration (74%) was the main route of administration, while leaves (40%) and stem barks (32%) were the most dominant plant parts used in herbal preparations. The most cited families were Fabaceae (15%) and Rutaceae (6%), while Mangifera indica (77.14%), Enantia chlorantha (65.71%), Alstonia boonei (57.14%) followed by Cymbopogon citratus (54.29%) were the most used plants. Besides, the antimalarial activities of many of the plants recorded and their isolated phytocompounds have been demonstrated. Furthermore, the conservation status of 4 identified plants were Vulnerable. CONCLUSION The study showed strong ethnobotanical knowledge shared by the TMPs in the State and provides preliminary information that could be explored for the discovery of more potent antimalarial compounds.
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Affiliation(s)
- Ikponmwosa Owen Evbuomwan
- SDG #03 Group - Good Health and Well-being, Landmark University, Ipetu Road, PMB 1001, Omu-Aran, 251101, Nigeria.
- Department of Biochemistry, Landmark University, Ipetu Road, PMB 1001, Omu-Aran, 251101, Nigeria.
- Department of Microbiology, Cellular Parasitology Unit, Landmark University, Ipetu Road, PMB 1001, Omu-Aran, 251101, Nigeria.
| | - Oluyomi Stephen Adeyemi
- SDG #03 Group - Good Health and Well-being, Landmark University, Ipetu Road, PMB 1001, Omu-Aran, 251101, Nigeria.
- Department of Biochemistry, Landmark University, Ipetu Road, PMB 1001, Omu-Aran, 251101, Nigeria.
- Laboratory of Sustainable Animal Environment, Graduate School of Agricultural Science, Tohoku University, 232-3 Yomogida, Naruko-Onsen, Osaki, Miyagi, 989-6711, Japan.
| | - Olarewaju Michael Oluba
- SDG #03 Group - Good Health and Well-being, Landmark University, Ipetu Road, PMB 1001, Omu-Aran, 251101, Nigeria.
- Department of Biochemistry, Landmark University, Ipetu Road, PMB 1001, Omu-Aran, 251101, Nigeria.
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3
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Hien DFDS, Paré PSL, Cooper A, Koama BK, Guissou E, Yaméogo KB, Yerbanga RS, Farrell IW, Ouédraogo JB, Gnankiné O, Ignell R, Cohuet A, Dabiré RK, Stevenson PC, Lefèvre T. Contrasting effects of the alkaloid ricinine on the capacity of Anopheles gambiae and Anopheles coluzzii to transmit Plasmodium falciparum. Parasit Vectors 2021; 14:479. [PMID: 34526119 PMCID: PMC8444468 DOI: 10.1186/s13071-021-04992-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 09/02/2021] [Indexed: 11/18/2022] Open
Abstract
Background Besides feeding on blood, females of the malaria vector Anopheles gambiae sensu lato readily feed on natural sources of plant sugars. The impact of toxic secondary phytochemicals contained in plant-derived sugars on mosquito physiology and the development of Plasmodium parasites remains elusive. The focus of this study was to explore the influence of the alkaloid ricinine, found in the nectar of the castor bean Ricinus communis, on the ability of mosquitoes to transmit Plasmodium falciparum. Methods Females of Anopheles gambiae and its sibling species Anopheles coluzzii were exposed to ricinine through sugar feeding assays to assess the effect of this phytochemical on mosquito survival, level of P. falciparum infection and growth rate of the parasite. Results Ricinine induced a significant reduction in the longevity of both Anopheles species. Ricinine caused acceleration in the parasite growth rate with an earlier invasion of the salivary glands in both species. At a concentration of 0.04 g l−1 in An. coluzzii, ricinine had no effect on mosquito infection, while 0.08 g l−1 ricinine-5% glucose solution induced a 14% increase in An. gambiae infection rate. Conclusions Overall, our findings reveal that consumption of certain nectar phytochemicals can have unexpected and contrasting effects on key phenotypic traits that govern the intensity of malaria transmission. Further studies will be required before concluding on the putative role of ricinine as a novel control agent, including the development of ricinine-based toxic and transmission-blocking sugar baits. Testing other secondary phytochemicals in plant nectar will provide a broader understanding of the impact which plants can have on the transmission of vector-borne diseases. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04992-z.
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Affiliation(s)
- Domonbabele F D S Hien
- Institut de Recherche en Sciences de La Santé (IRSS), Bobo Dioulasso, Burkina Faso. .,Laboratoire Mixte International Sur Les Vecteurs (LAMIVECT), Bobo Dioulasso, Burkina Faso. .,MIVEGEC, Université de Montpellier, IRD, CNRS, Montpellier, France.
| | - Prisca S L Paré
- Institut de Recherche en Sciences de La Santé (IRSS), Bobo Dioulasso, Burkina Faso.,MIVEGEC, Université de Montpellier, IRD, CNRS, Montpellier, France.,Université Joseph KI-ZERBO, Ougadougou, Burkina Faso
| | - Amanda Cooper
- Royal Botanic Gardens, Kew, Surrey, Richmond, TW9 3AE, UK
| | - Benjamin K Koama
- Institut de Recherche en Sciences de La Santé (IRSS), Bobo Dioulasso, Burkina Faso.,Institut Des Sciences Et Techniques, Université Nazi Boni, Bobo-Dioulasso, Burkina Faso
| | - Edwige Guissou
- Institut de Recherche en Sciences de La Santé (IRSS), Bobo Dioulasso, Burkina Faso.,Laboratoire Mixte International Sur Les Vecteurs (LAMIVECT), Bobo Dioulasso, Burkina Faso.,MIVEGEC, Université de Montpellier, IRD, CNRS, Montpellier, France
| | - Koudraogo B Yaméogo
- Institut de Recherche en Sciences de La Santé (IRSS), Bobo Dioulasso, Burkina Faso.,Laboratoire Mixte International Sur Les Vecteurs (LAMIVECT), Bobo Dioulasso, Burkina Faso
| | - Rakiswendé S Yerbanga
- Institut de Recherche en Sciences de La Santé (IRSS), Bobo Dioulasso, Burkina Faso.,Laboratoire Mixte International Sur Les Vecteurs (LAMIVECT), Bobo Dioulasso, Burkina Faso
| | - Iain W Farrell
- Royal Botanic Gardens, Kew, Surrey, Richmond, TW9 3AE, UK
| | - Jean B Ouédraogo
- Institut de Recherche en Sciences de La Santé (IRSS), Bobo Dioulasso, Burkina Faso
| | | | - Rickard Ignell
- Department of Plant Protection Biology, Unit of Chemical Ecology, Disease Vector Group, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Anna Cohuet
- Laboratoire Mixte International Sur Les Vecteurs (LAMIVECT), Bobo Dioulasso, Burkina Faso.,MIVEGEC, Université de Montpellier, IRD, CNRS, Montpellier, France
| | - Roch K Dabiré
- Institut de Recherche en Sciences de La Santé (IRSS), Bobo Dioulasso, Burkina Faso.,Laboratoire Mixte International Sur Les Vecteurs (LAMIVECT), Bobo Dioulasso, Burkina Faso
| | - Philip C Stevenson
- Royal Botanic Gardens, Kew, Surrey, Richmond, TW9 3AE, UK.,Natural Resources Institute, University of Greenwich, Kent, ME4 4TB, UK
| | - Thierry Lefèvre
- Laboratoire Mixte International Sur Les Vecteurs (LAMIVECT), Bobo Dioulasso, Burkina Faso.,MIVEGEC, Université de Montpellier, IRD, CNRS, Montpellier, France.,Centre de Recherche en Écologie Et Évolution de La Santé (CREES), Montpellier, France
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4
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Martínez-Peinado N, Cortes-Serra N, Tallini LR, Pinazo MJ, Gascon J, Bastida J, Alonso-Padilla J. Amaryllidaceae plants: a potential natural resource for the treatment of Chagas disease. Parasit Vectors 2021; 14:337. [PMID: 34174959 PMCID: PMC8235838 DOI: 10.1186/s13071-021-04837-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 06/09/2021] [Indexed: 11/10/2022] Open
Abstract
Background Chagas disease is a neglected zoonosis caused by the parasite Trypanosoma cruzi. It affects over six million people, mostly in Latin America. Drugs available to treat T. cruzi infection have associated toxicity and questionable efficacy at the chronic stage. Hence, the discovery of more effective and safer drugs is an unmet medical need. For this, natural products represent a pool of unique chemical diversity that can serve as excellent templates for the synthesis of active molecules. Methods A collection of 79 extracts of Amaryllidaceae plants were screened against T. cruzi. Active extracts against the parasite were progressed through two cell toxicity assays based on Vero and HepG2 cells to determine their selectivity profile and discard those toxic to host cells. Anti-T. cruzi-specific extracts were further qualified by an anti-amastigote stage assay. Results Two extracts, respectively from Crinum erubescens and Rhodophiala andicola, were identified as highly active and specific against T. cruzi and its mammalian replicative form. Conclusions The results retrieved in this study encourage further exploration of the chemical content of these extracts in search of new anti-T. cruzi drug development starting points. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04837-9.
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Affiliation(s)
- Nieves Martínez-Peinado
- Barcelona Institute for Global Health (ISGlobal), Hospital Clinic-University of Barcelona, 08036, Barcelona, Spain
| | - Nuria Cortes-Serra
- Barcelona Institute for Global Health (ISGlobal), Hospital Clinic-University of Barcelona, 08036, Barcelona, Spain
| | - Luciana R Tallini
- Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia I Ciències de L´Alimentació, Universitat de Barcelona, 08028, Barcelona, Spain.,Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande Do Sul, Porto Alegre - RS, 90610-000, Brazil
| | - Maria-Jesus Pinazo
- Barcelona Institute for Global Health (ISGlobal), Hospital Clinic-University of Barcelona, 08036, Barcelona, Spain
| | - Joaquim Gascon
- Barcelona Institute for Global Health (ISGlobal), Hospital Clinic-University of Barcelona, 08036, Barcelona, Spain
| | - Jaume Bastida
- Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia I Ciències de L´Alimentació, Universitat de Barcelona, 08028, Barcelona, Spain.
| | - Julio Alonso-Padilla
- Barcelona Institute for Global Health (ISGlobal), Hospital Clinic-University of Barcelona, 08036, Barcelona, Spain.
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Obembe OO. Buchholzia coriacea (wonderful kola) seeds induce male reproductive toxicity by suppressing the pituitary-gonadal axis in Wistar rats. BRAZ J PHARM SCI 2021. [DOI: 10.1590/s2175-97902020000419016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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6
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Moyo P, Mugumbate G, Eloff JN, Louw AI, Maharaj VJ, Birkholtz LM. Natural Products: A Potential Source of Malaria Transmission Blocking Drugs? Pharmaceuticals (Basel) 2020; 13:E251. [PMID: 32957668 PMCID: PMC7558993 DOI: 10.3390/ph13090251] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 12/17/2022] Open
Abstract
The ability to block human-to-mosquito and mosquito-to-human transmission of Plasmodium parasites is fundamental to accomplish the ambitious goal of malaria elimination. The WHO currently recommends only primaquine as a transmission-blocking drug but its use is severely restricted by toxicity in some populations. New, safe and clinically effective transmission-blocking drugs therefore need to be discovered. While natural products have been extensively investigated for the development of chemotherapeutic antimalarial agents, their potential use as transmission-blocking drugs is comparatively poorly explored. Here, we provide a comprehensive summary of the activities of natural products (and their derivatives) of plant and microbial origins against sexual stages of Plasmodium parasites and the Anopheles mosquito vector. We identify the prevailing challenges and opportunities and suggest how these can be mitigated and/or exploited in an endeavor to expedite transmission-blocking drug discovery efforts from natural products.
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Affiliation(s)
- Phanankosi Moyo
- Malaria Parasite Molecular Laboratory, Department of Biochemistry, Genetics and Microbiology, Institute for Sustainable Malaria Control, Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag x20, Hatfield, 0028 Pretoria, South Africa;
| | - Grace Mugumbate
- Department of Chemistry, School of Natural Sciences and Mathematics, Chinhoyi University of Technology, Private Bag, 7724 Chinhoyi, Zimbabwe;
| | - Jacobus N. Eloff
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag x04, Onderstepoort 0110 Pretoria, South Africa;
| | - Abraham I. Louw
- Malaria Parasite Molecular Laboratory, Department of Biochemistry, Genetics and Microbiology, Institute for Sustainable Malaria Control, Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag x20, Hatfield, 0028 Pretoria, South Africa;
| | - Vinesh J. Maharaj
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag x20, Hatfield, 0028 Pretoria, South Africa;
| | - Lyn-Marié Birkholtz
- Malaria Parasite Molecular Laboratory, Department of Biochemistry, Genetics and Microbiology, Institute for Sustainable Malaria Control, Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag x20, Hatfield, 0028 Pretoria, South Africa;
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7
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Abstract
As the world gets closer to eliminating malaria, the scientific community worldwide has begun to realize the importance of malaria transmission-blocking interventions. The onus of breaking the life cycle of the human malaria parasite Plasmodium falciparum predominantly rests upon transmission-blocking drugs because of emerging resistance to commonly used schizonticides and insecticides. This third part of our review series on malaria transmission-blocking entails transmission-blocking potential of preclinical transmission-blocking antimalarials and other non-malaria drugs/experimental compounds that are not in clinical or preclinical development for malaria but possess transmission-blocking potential. Collective analysis of the structure and the activity of these experimental compounds might pave the way toward generation of novel prototypes of next-generation transmission-blocking drugs.
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8
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Tajuddeen N, Van Heerden FR. Antiplasmodial natural products: an update. Malar J 2019; 18:404. [PMID: 31805944 PMCID: PMC6896759 DOI: 10.1186/s12936-019-3026-1] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 11/21/2019] [Indexed: 11/25/2022] Open
Abstract
Background Malaria remains a significant public health challenge in regions of the world where it is endemic. An unprecedented decline in malaria incidences was recorded during the last decade due to the availability of effective control interventions, such as the deployment of artemisinin-based combination therapy and insecticide-treated nets. However, according to the World Health Organization, malaria is staging a comeback, in part due to the development of drug resistance. Therefore, there is an urgent need to discover new anti-malarial drugs. This article reviews the literature on natural products with antiplasmodial activity that was reported between 2010 and 2017. Methods Relevant literature was sourced by searching the major scientific databases, including Web of Science, ScienceDirect, Scopus, SciFinder, Pubmed, and Google Scholar, using appropriate keyword combinations. Results and Discussion A total of 1524 compounds from 397 relevant references, assayed against at least one strain of Plasmodium, were reported in the period under review. Out of these, 39% were described as new natural products, and 29% of the compounds had IC50 ≤ 3.0 µM against at least one strain of Plasmodium. Several of these compounds have the potential to be developed into viable anti-malarial drugs. Also, some of these compounds could play a role in malaria eradication by targeting gametocytes. However, the research into natural products with potential for blocking the transmission of malaria is still in its infancy stage and needs to be vigorously pursued.
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Affiliation(s)
- Nasir Tajuddeen
- School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg, 3209, South Africa
| | - Fanie R Van Heerden
- School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg, 3209, South Africa.
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9
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Sirignano C, Snene A, Tenoh AR, El Mokni R, Rigano D, Habluetzel A, Hammami S, Taglialatela-Scafati O. Daucovirgolides I-L, four congeners of the antimalarial daucovirgolide G from Daucus virgatus. Fitoterapia 2019; 137:104188. [PMID: 31158428 DOI: 10.1016/j.fitote.2019.104188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 12/11/2022]
Abstract
Repeated chromatographic purifications of aerial parts of the Tunisian plant Daucus virgatus led to the isolation of four new germacranolides, named daucovirgolides I-L (2-5), along with the Plasmodium transmission-blocking agent daucovirgolide G. The chemical structures of the new compounds were defined as mono- or di-angeloylated germacrane-type sesquiterpenoids by spectroscopic (mainly 1D and 2D NMR) and spectrometric methods (ESIMS). The low potency exhibited by daucovirgolides I-L further supports the observation that strict structural requirements do exist for the Plasmodium transmission blocking activity in the daucovirgolide series. In particular, the endocyclic double bond system seems to be crucial for bioactivity.
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Affiliation(s)
- Carmina Sirignano
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - Alì Snene
- Research Unit Applied Chemistry and Environment 13ES63, Faculty of Sciences of Monastir, University of Monastir, Tunisia
| | - Alain Rodrigue Tenoh
- School of Pharmacy, University of Camerino, Via Madonna delle Carceri 9, 63032 Camerino, MC, Italy
| | - Ridha El Mokni
- Department of Botany and Plant Biology, Faculty of Pharmacy of Monastir, University of Monastir, Tunisia
| | - Daniela Rigano
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - Annette Habluetzel
- School of Pharmacy, University of Camerino, Via Madonna delle Carceri 9, 63032 Camerino, MC, Italy
| | - Saoussen Hammami
- Research Unit Applied Chemistry and Environment 13ES63, Faculty of Sciences of Monastir, University of Monastir, Tunisia
| | - Orazio Taglialatela-Scafati
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy.
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Ndjonka D, Djafsia B, Liebau E. Review on medicinal plants and natural compounds as anti-Onchocerca agents. Parasitol Res 2018; 117:2697-2713. [PMID: 30008135 DOI: 10.1007/s00436-018-6003-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 07/04/2018] [Indexed: 12/28/2022]
Abstract
Onchocerciasis is a filarial vector borne disease which affects several million people mostly in Africa. The therapeutic approach of its control was based on a succession of drugs which always showed limits. The last one: ivermectin is not the least. It was shown to be only microfilaricidal and induced resistance to the human parasite Onchocerca volvulus. The approach using medicinal plants used in traditional medicine is a possible alternative method to cure onchocerciasis. Onchocerca ochengi and Onchocerca gutturosa are the parasite models used to assess anthelmintic activity of potentially anthelmintic plants. Numerous studies assessed the in vitro and/or in vivo anthelmintic activity of medicinal plants. Online electronic databases were consulted to gather publications on in vitro and in vivo studies of anti-Onchocerca activity of plants from 1990 to 2017. Globally, 13 plant families were investigated for anti-Onchocerca activity in 13 studies. The most active species were Anacardium occidentale, Euphorbia hirta and Acacia nilotica each with an LC50 value of 2.76, 6.25 and 1.2 μg/mL, respectively. Polycarpol, voacamine, voacangine, ellagic acid, gallic acid, gentisic acid, 3-O-acetyl aleuritolic acid and (-)-epigallocatechin 3-O-gallate were the isolated plant compounds with anti-Onchocerca activity. Most of the assessed extract/compounds showed a good safety after in vivo acute toxicity assays and/or in vitro cytotoxicity test. The exception was the ethanol extract of Trichilia emetica, which killed completely and drastically mice at a dose of 3000 mg/kg. Several plant groups of compounds were shown active against Onchocerca sp. such as tannins, alkaloids, triterpenoids and essential oils. Nevertheless, none of the active compounds was subjected to clinical trial, to assessment of its diffusibility through nodular wall or its capability to induce genetic resistance of Onchocerca sp.
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Affiliation(s)
- Dieudonné Ndjonka
- Department of Biological Sciences, Faculty of Science, University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon.
| | - Boursou Djafsia
- Department of Biological Sciences, Faculty of Science, University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon.,Saint Jerome School of Health Sciences, Saint Jerome Catholic University of Douala, Douala, Cameroon
| | - Eva Liebau
- University of Münster, Institute for Zoophysiology, Schlossplatz 8, 48143, Münster, Germany
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Sirignano C, Snene A, Rigano D, Tapanelli S, Formisano C, Luciano P, El Mokni R, Hammami S, Tenoh AR, Habluetzel A, Taglialatela-Scafati O. Angeloylated Germacranolides from Daucus virgatus and Their Plasmodium Transmission Blocking Activity. JOURNAL OF NATURAL PRODUCTS 2017; 80:2787-2794. [PMID: 28976194 DOI: 10.1021/acs.jnatprod.7b00603] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Phytochemical investigation of the aerial parts of the Tunisian plant Daucus virgatus led to the isolation of eight new germacranolides named daucovirgolides A-H (1-8). The stereostructures of these sesquiterpene lactones, decorated by either one or two angeloyl groups, have been determined by a combination of MS, NMR spectroscopy, chemical derivatization, and comparison of experimental electronic circular dichroism curves with TDDFT-predicted data. Daucovirgolide G (7) proved to be the single member of this family to possess a marked inhibitory activity (92% at 50 μg/mL) on the development of Plasmodium early sporogonic stages, the nonpathogenic transmissible stages of malaria parasites, devoid of general cytotoxicity. The selective activity of daucovirgolide G points to the existence of strict structural requirements for this transmission-blocking activity and therefore of a well-defined, although yet unidentified, biological target.
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Affiliation(s)
- Carmina Sirignano
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II , Via Montesano 49, 80131 Naples, Italy
| | - Alì Snene
- Research Unit Applied Chemistry and Environment 13ES63, Faculty of Sciences, University of Monastir , 5000, Monastir, Tunisia
| | - Daniela Rigano
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II , Via Montesano 49, 80131 Naples, Italy
| | - Sofia Tapanelli
- Scuola di Scienza del Farmaco e dei Prodotti della Salute, Università di Camerino , Via d'Accorso 16, 63032 Camerino (MC), Italy
| | - Carmen Formisano
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II , Via Montesano 49, 80131 Naples, Italy
| | - Paolo Luciano
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II , Via Montesano 49, 80131 Naples, Italy
| | - Ridha El Mokni
- Laboratory of Transmissible Diseases LR99ES27, Faculty of Pharmacy, University of Monastir , Avicenne Street, 5000, Monastir, Tunisia
| | - Saoussen Hammami
- Research Unit Applied Chemistry and Environment 13ES63, Faculty of Sciences, University of Monastir , 5000, Monastir, Tunisia
| | - Alain Rodrigue Tenoh
- Scuola di Scienza del Farmaco e dei Prodotti della Salute, Università di Camerino , Via d'Accorso 16, 63032 Camerino (MC), Italy
| | - Annette Habluetzel
- Scuola di Scienza del Farmaco e dei Prodotti della Salute, Università di Camerino , Via d'Accorso 16, 63032 Camerino (MC), Italy
| | - Orazio Taglialatela-Scafati
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II , Via Montesano 49, 80131 Naples, Italy
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Abstract
Sudan folklore medicine is characterized by a unique combination of Islamic, Arabic, and African cultures. In poor communities, traditional medicine has remained as the most reasonable source of treatment of several diseases and microbial infections. Although the traditional medicine is accepted in Sudan, to date there is no updated review available, which focuses on most effective and frequently used Sudanese medicinal plants. Thus, this review aims to summarize the published information on the ethnobotanical uses of medicinal plants from Sudan, preparation methods, phytochemistry, and ethnopharmacology. The collected data demonstrate that Sudanese medicinal plants have been reported to possess a wide range of traditional medicinal uses including different microbial infections, gastrointestinal disorders, malaria, diabetes, rheumatic pain, respiratory system disorders, jaundice, urinary system inflammations, wounds, cancer, and different microbial infections. In most cases, the pharmacological studies were in agreement with traditional uses. Moreover, several bioactive compounds such as flavonoids, saponins, alkaloids, steroids, terpenes, tannins, fatty acids, and essential oils have been identified as active constituents. Although this review demonstrates the importance of ethnomedicine medicines in the treatment of several diseases in Sudan, further researches to validate the therapeutic uses and safety of these plants through phytochemical screening, different biological activity assays, and toxicological studies are still needed.
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Affiliation(s)
| | - Nikolai Kuhnert
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
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13
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Dahiya N, Chianese G, Abay SM, Taglialatela-Scafati O, Esposito F, Lupidi G, Bramucci M, Quassinti L, Christophides G, Habluetzel A, Lucantoni L. In vitro and ex vivo activity of an Azadirachta indica A.Juss. seed kernel extract on early sporogonic development of Plasmodium in comparison with azadirachtin A, its most abundant constituent. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:1743-1752. [PMID: 27912876 DOI: 10.1016/j.phymed.2016.10.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 10/12/2016] [Accepted: 10/26/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND NeemAzal® (NA) is a quantified extract from seed kernels of neem, Azadirachta indica A.Juss. (Meliaceae), with a wide spectrum of biological properties, classically ascribed to its limonoid content. NA contains several azadirachtins (A to L), azadirachtin A (AzaA) being its main constituent. AzaA has been shown to inhibit microgamete formation of the rodent malaria parasite Plasmodium berghei, and NA was found to completely inhibit the transmission of Plasmodium berghei to Anopheles stephensi mosquitoes when administered to gametocytemic mice at a corresponding AzaA dose of 50mg/kg before exposure to mosquitoes. PURPOSE The present study was aimed at i) assessing the pharmacodynamics and duration of action of NA and AzaA against P. berghei exflagellation in systemic circulation in mice and ii) elucidating the transmission blocking activity (TBA) of the main NA constituents. STUDY DESIGN The NA and AzaA pharmacodynamics on exflagellation were assessed through ex vivo exflagellation assays, while TBA of NA constituents was evaluated through in vitro ookinete development assay. METHODS Pharmacodynamics experiments: Peripheral blood from P. berghei infected BALB/c mice with circulating mature gametocytes, were treated i.p. with 50mg/kg and 100mg/kg pure AzaA and with NeemAzal® (Trifolio-M GmbH) at the corresponding AzaA concentrations. The effect magnitude and duration of action of compounds was estimated by counting exflagellation centers, formed by microgametocytes in process of releasing flagellated gametes, at various time points after treatment in ex vivo exflagellation tests. Ookinete Development Assay: The direct effects of NeemAzal® and AzaA on ookinete development were measured by fluorescence microscopy after incubation of gametocytemic blood with various concentrations of test substances in microplates for 24h. RESULTS The exflagellation tests revealed an half-life of NA anti-plasmodial compounds of up to 7h at a NA dose corresponding to 100mg/kg equivalent dose of AzaA. The ookinete development assay showed an increased activity of NA against early sporogonic stages compared to that of AzaA. The IC50 value determined for NA was 6.8µg/ml (CI95: 5.95-7.86), about half of the AzaA IC50 (12.4µg/ml; CI95: 11.0-14.04). CONCLUSION The stronger activity of NA, when compared to AzaA, could not be explained by an additive or synergistic effect by other azadirachtins (B, D and I) present in NA. In fact, the addition of these compounds at 50µM concentration to AzaA did not evidence any decrease of the IC50 against early sporogonic stages to that obtained with AzaA alone. It is likely that other non-limonoid compounds present in NA may contribute to AzaA activity and enhanced pharmacodynamics against exflagellation both in vitro and in vivo.
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Affiliation(s)
- Nisha Dahiya
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032 Camerino, (MC) Italy.
| | - Giuseppina Chianese
- Department of Pharmacy, University of Naples Federico II, Via Montesano 49, 80131 Naples, Italy.
| | - Solomon Mequanente Abay
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032 Camerino, (MC) Italy; School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
| | | | - Fulvio Esposito
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032 Camerino, (MC) Italy.
| | - Giulio Lupidi
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032 Camerino, (MC) Italy.
| | - Massimo Bramucci
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032 Camerino, (MC) Italy.
| | - Luana Quassinti
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032 Camerino, (MC) Italy.
| | | | - Annette Habluetzel
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032 Camerino, (MC) Italy.
| | - Leonardo Lucantoni
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032 Camerino, (MC) Italy; Discovery Biology, Eskitis Institute for Drug Discovery, Griffith University, Nathan, 4111 Queensland, Australia.
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14
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Moyo P, Botha ME, Nondaba S, Niemand J, Maharaj VJ, Eloff JN, Louw AI, Birkholtz L. In vitro inhibition of Plasmodium falciparum early and late stage gametocyte viability by extracts from eight traditionally used South African plant species. JOURNAL OF ETHNOPHARMACOLOGY 2016; 185:235-242. [PMID: 26994818 DOI: 10.1016/j.jep.2016.03.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/11/2016] [Accepted: 03/15/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Extracts of plant species, used traditionally to treat malaria, have been extensively investigated for their activity against Plasmodium intraerythrocytic asexual parasites in search of new antimalarial drugs. However, less effort has been directed towards examining their efficacy in blocking transmission. Here, we report the results of the in vitro screening of extracts from eight selected plant species used traditionally to treat malaria in South Africa for activity against Plasmodium falciparum NF54 early and late stage gametocytes. The species used were Khaya anthotheca, Trichilia emetica, Turraea floribunda, Leonotis leonurus, Leonotis leonurus ex Hort, Olea europaea subsp. Africana, Catha edulis and Artemisia afra. AIM OF THE STUDY To investigate the activities of extracts from plant species traditionally used for malaria treatment against P. falciparum gametocytes. MATERIAL AND METHODS Air-dried and ground plant leaves were extracted using acetone. Primary two point in vitro phenotypic screens against both early and late stage gametocytes were done at 10 and 20µg/ml followed by full IC50 determination of the most active extracts. Inhibition of gametocyte viability in vitro was assessed using the parasite lactate dehydrogenase (pLDH) assay. RESULTS Of the eight crude acetone extracts from plant species screened in vitro, four had good activity with over 50-70% inhibition of early and late stage gametocytes' viability at 10 and 20µg/ml, respectively. Artemisia afra (Asteraceae), Trichilia emetica (Meliaceae) and Turraea floribunda (Meliaceae) were additionally highly active against both gametocyte stages with IC50 values of less than 10µg/ml while Leonotis leonurus ex Hort (Lamiaceae) was moderately active (IC50<20µg/ml). The activity of these three highly active plant species was significantly more pronounced on late stage gametocytes compared to early stages. CONCLUSION This study shows the potential transmission blocking activity of extracts from selected South African medicinal plants and substantiates their traditional use in malaria control that broadly encompasses prevention, treatment and transmission blocking. Further studies are needed to isolate and identify the active principles from the crude extracts of A. afra, T. emetica and T. floribunda, as well as to examine their efficacy towards blocking parasite transmission to mosquitoes.
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Affiliation(s)
- P Moyo
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, Centre for Sustainable Malaria Control, University of Pretoria, Private Bag x20, Pretoria 0028, South Africa.
| | - M E Botha
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, Centre for Sustainable Malaria Control, University of Pretoria, Private Bag x20, Pretoria 0028, South Africa.
| | - S Nondaba
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, Centre for Sustainable Malaria Control, University of Pretoria, Private Bag x20, Pretoria 0028, South Africa.
| | - J Niemand
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, Centre for Sustainable Malaria Control, University of Pretoria, Private Bag x20, Pretoria 0028, South Africa.
| | - V J Maharaj
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, Centre for Sustainable Malaria Control, University of Pretoria, Private Bag x20, Pretoria 0028, South Africa.
| | - J N Eloff
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, Centre for Sustainable Malaria Control, University of Pretoria, Private Bag x04, Onderstepoort 0110, Pretoria, South Africa.
| | - A I Louw
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, Centre for Sustainable Malaria Control, University of Pretoria, Private Bag x20, Pretoria 0028, South Africa.
| | - L Birkholtz
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, Centre for Sustainable Malaria Control, University of Pretoria, Private Bag x20, Pretoria 0028, South Africa.
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15
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Yerbanga RS, Rayaisse JB, Vantaux A, Salou E, Mouline K, Hien F, Habluetzel A, Dabiré RK, Ouédraogo JB, Solano P, Lefèvre T. Neemazal ® as a possible alternative control tool for malaria and African trypanosomiasis? Parasit Vectors 2016; 9:263. [PMID: 27146309 PMCID: PMC4857419 DOI: 10.1186/s13071-016-1538-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 04/26/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Research efforts to identify possible alternative control tools for malaria and African trypanosomiasis are needed. One promising approach relies on the use of traditional plant remedies with insecticidal activities. METHODS In this study, we assessed the effect of blood treated with different doses of NeemAzal ® (NA, neem seed extract) on mosquitoes (Anopheles coluzzii) and tsetse flies (Glossina palpalis gambiensis) (i) avidity to feed on the treated blood, (ii) longevity, and (iii) behavioural responses to human and calf odours in dual-choice tests. We also gauged NeemAzal ® toxicity in mice. RESULTS In An. coluzzii, the ingestion of NA in bloodmeals offered by membrane feeding resulted in (i) primary antifeedancy; (ii) decreased longevity; and (iii) reduced response to host odours. In G. palpalis gambiensis, NA caused (i) a knock-down effect; (ii) decreased or increased longevity depending on the dose; and (iii) reduced response to host stimuli. In both cases, NA did not affect the anthropophilic rate of activated insects. Overall, the most significant effects were observed with NA treated bloodmeals at a dose of 2000 μg/ml for mosquitoes and 50 μg/ml for tsetse flies. Although no mortality in mice was observed after 14 days of follow-up at oral doses of 3.8, 5.6, 8.4 and 12.7 g/kg, behavioural alterations were noticed at doses above 8 g/kg. CONCLUSION This study revealed promising activity of NA on A. coluzzii and G. palpalis gambiensis but additional research is needed to assess field efficacy of neem products to be possibly integrated in vector control programmes.
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Affiliation(s)
- R Serge Yerbanga
- Institut de Recherche en Sciences de la Santé (IRSS), Bobo Dioulasso, Burkina Faso.
| | - Jean-Baptiste Rayaisse
- Centre International de Recherche Développement sur l'Elevage en zone Subhumide (CIRDES), Bobo Dioulasso, Burkina Faso
| | - Amélie Vantaux
- Institut de Recherche en Sciences de la Santé (IRSS), Bobo Dioulasso, Burkina Faso.,MIVEGEC (Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle), UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Ernest Salou
- Centre International de Recherche Développement sur l'Elevage en zone Subhumide (CIRDES), Bobo Dioulasso, Burkina Faso
| | - Karine Mouline
- Institut de Recherche en Sciences de la Santé (IRSS), Bobo Dioulasso, Burkina Faso.,MIVEGEC (Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle), UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - François Hien
- Institut de Recherche en Sciences de la Santé (IRSS), Bobo Dioulasso, Burkina Faso.,MIVEGEC (Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle), UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Annette Habluetzel
- University of Camerino, School of Pharmacy, Piazza dei Costantini, 62032, Camerino, MC, Italy
| | - Roch K Dabiré
- Institut de Recherche en Sciences de la Santé (IRSS), Bobo Dioulasso, Burkina Faso
| | - Jean Bosco Ouédraogo
- Institut de Recherche en Sciences de la Santé (IRSS), Bobo Dioulasso, Burkina Faso
| | - Philippe Solano
- Centre International de Recherche Développement sur l'Elevage en zone Subhumide (CIRDES), Bobo Dioulasso, Burkina Faso.,INTERTRYP, UMR 177 IRD-CIRAD, Montpellier, France
| | - Thierry Lefèvre
- Institut de Recherche en Sciences de la Santé (IRSS), Bobo Dioulasso, Burkina Faso. .,MIVEGEC (Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle), UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France.
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16
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Abay SM, Lucantoni L, Dahiya N, Dori G, Dembo EG, Esposito F, Lupidi G, Ogboi S, Ouédraogo RK, Sinisi A, Taglialatela-Scafati O, Yerbanga RS, Bramucci M, Quassinti L, Ouédraogo JB, Christophides G, Habluetzel A. Plasmodium transmission blocking activities of Vernonia amygdalina extracts and isolated compounds. Malar J 2015. [PMID: 26208861 PMCID: PMC4513948 DOI: 10.1186/s12936-015-0812-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Background Medicinal plants are a validated source for discovery of new leads and standardized herbal medicines. The aim of this study was to assess the activity of Vernoniaamygdalina leaf extracts and isolated compounds against gametocytes and sporogonic stages of Plasmodiumberghei and to validate the findings on field isolates of Plasmodium falciparum. Methods Aqueous (Ver-H2O) and ethanolic (Ver-EtOH) leaf extracts were tested in vivo for activity against sexual and asexual blood stage P. berghei parasites. In vivo transmission blocking effects of Ver-EtOH and Ver-H2O were estimated by assessing P. berghei oocyst prevalence and density in Anopheles stephensi mosquitoes. Activity targeting early sporogonic stages (ESS), namely gametes, zygotes and ookinetes was assessed in vitro using P. berghei CTRPp.GFP strain. Bioassay guided fractionation was performed to characterize V.amygdalina fractions and molecules for anti-ESS activity. Fractions active against ESS of the murine parasite were tested for ex vivo transmission blocking activity on P.falciparum field isolates. Cytotoxic effects of extracts and isolated compounds vernolide and vernodalol were evaluated on the human cell lines HCT116 and EA.hy926. Results Ver-H2O reduced the P. berghei macrogametocyte density in mice by about 50% and Ver-EtOH reduced P. berghei oocyst prevalence and density by 27 and 90%, respectively, in An.stephensi mosquitoes. Ver-EtOH inhibited almost completely (>90%) ESS development in vitro at 50 μg/mL. At this concentration, four fractions obtained from the ethylacetate phase of the methanol extract displayed inhibitory activity >90% against ESS. Three tested fractions were also found active against field isolates of the human parasite P. falciparum, reducing oocyst prevalence in Anopheles coluzzii mosquitoes to one-half and oocyst density to one-fourth of controls. The molecules and fractions displayed considerable cytotoxicity on the two tested cell-lines. Conclusions Vernonia amygdalina leaves contain molecules affecting multiple stages of Plasmodium, evidencing its potential for drug discovery. Chemical modification of the identified hit molecules, in particular vernodalol, could generate a library of druggable sesquiterpene lactones. The development of a multistage phytomedicine designed as preventive treatment to complement existing malaria control tools appears a challenging but feasible goal. Electronic supplementary material The online version of this article (doi:10.1186/s12936-015-0812-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Solomon M Abay
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy. .,School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
| | - Leonardo Lucantoni
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy. .,Discovery Biology, Eskitis Institute for Drug Discovery, Griffith University, Nathan, QLD, 4111, Australia.
| | - Nisha Dahiya
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
| | - Geme Dori
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
| | - Edson G Dembo
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
| | - Fulvio Esposito
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
| | - Guilio Lupidi
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
| | - Sonny Ogboi
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
| | - Robert K Ouédraogo
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy. .,Institut de Recherche enSciences de la Santé, Direction Régionale de l'Ouest, Bobo-Dioulasso, Burkina Faso.
| | - Annamaria Sinisi
- Department of Pharmacy, University of Naples Federico II, Via Montesano 49, 80131, Naples, Italy.
| | | | - R Serge Yerbanga
- Institut de Recherche enSciences de la Santé, Direction Régionale de l'Ouest, Bobo-Dioulasso, Burkina Faso.
| | - Massimo Bramucci
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
| | - Luana Quassinti
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
| | - Jean Bosco Ouédraogo
- Institut de Recherche enSciences de la Santé, Direction Régionale de l'Ouest, Bobo-Dioulasso, Burkina Faso.
| | | | - Annette Habluetzel
- School of Pharmacy, University of Camerino, Piazza dei Costanti, 62032, Camerino, MC, Italy.
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