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  1. Article ; Online: Impact of land use patterns on bee communities in the north of Côte d'Ivoire (West Africa)

    Coulibaly, Drissa / Tuo, Yalamoussa / Kone, Mouhamadou / Soro, Kinafoho Christiane / Koua, Kouakou Hervé

    African Journal of Ecology. 2023 June, v. 61, no. 2 p.330-335

    2023  

    Abstract: Natural and protected area degradation constitutes a threat to bee communities and could decrease crop yield by reducing bee pollination effectiveness. For West Africa, changes in bee communities across disturbance gradients from savannah to agricultural ...

    Abstract Natural and protected area degradation constitutes a threat to bee communities and could decrease crop yield by reducing bee pollination effectiveness. For West Africa, changes in bee communities across disturbance gradients from savannah to agricultural land are mainly unknown. Our study aimed to assess the impact of land use patterns on bee communities in the department of Korhogo. We chose three sites of varying disturbance intensity (low, medium and high disturbance). Bees were caught using pan traps. Abundance, richness, evenness and community structure of bees were assessed. During 6 months of sampling, 3176 bee specimens belonging to three families (Apidae, Halictidae and Megachilidae) were caught, comprising 18 species and 15 genera. Species richness of Halictidae and abundance of Apidae were highest (F = 93.86; p = 0.0051). The station with low disturbance was more diversified (H′ = 2.75). Bee average abundance was higher in sites with medium disturbance. Our findings are relevant to biodiversity conservation. They show that bee diversity is high where the disturbance level is still low.
    Keywords Apidae ; Halictidae ; Megachilidae ; agricultural land ; bee pollination ; bees ; biodiversity conservation ; community structure ; conservation areas ; crop yield ; land use ; savannas ; species richness ; Cote d'Ivoire
    Language English
    Dates of publication 2023-06
    Size p. 330-335.
    Publishing place John Wiley & Sons, Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 2019879-6
    ISSN 1365-2028 ; 0141-6707
    ISSN (online) 1365-2028
    ISSN 0141-6707
    DOI 10.1111/aje.13110
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Randomized Field Trial to Assess the Safety and Efficacy of Dihydroartemisinin-Piperaquine for Seasonal Malaria Chemoprevention in School-Aged Children in Bandiagara, Mali.

    Traore, Karim / Coulibaly, Drissa / Kone, Abdoulaye K / Guindo, Boureima / Traore, Souleymane / Kouriba, Kindie / Djimde, Moussa / Thera, Mahamadou Ali

    The Journal of infectious diseases

    2024  Volume 229, Issue 1, Page(s) 189–197

    Abstract: Background: Owing to the increased cases of malaria in older children, the World Health Organization has recently recommended extending seasonal malaria chemoprevention (SMC) to children >5 years of age and using other effective drugs for malaria. In ... ...

    Abstract Background: Owing to the increased cases of malaria in older children, the World Health Organization has recently recommended extending seasonal malaria chemoprevention (SMC) to children >5 years of age and using other effective drugs for malaria. In this study, we report the safety and efficacy of dihydroartemisinin-piperaquine (DHA-PQ) for SMC in school-aged children in Mali.
    Method: This randomized, controlled trial included 345 participants aged 6-15 years randomized to receive DHA-PQ, sulfadoxine-pyrimethamine plus amodiaquine (SP-AQ), or no chemoprevention (albendazole) at a 1:1:1 ratio. Four rounds of SMC were conducted from September to December 2021. The participants were assessed 7 days after each round for safety and efficacy of the interventions.
    Results: Abdominal pain (11.8% vs 29.2%), headache (11.2% vs 19.2%), and vomiting (5.7% vs 15.2%) were frequently reported in the DHA-PQ and SP-AQ arms. On Day 120 of follow up, the incidence of clinical malaria was 0.01 episodes/person-month in the DHA-PQ and SP-AQ arms and 0.17 episodes/person-month in the control arm (P < .0001). Gametocytes were detected in 37 participants in all arms.
    Conclusions: Children in DHA-PQ arm reported less adverse events compared to the SP-AQ arm. Both drugs were effective against clinical malaria and infection.
    MeSH term(s) Child ; Humans ; Infant ; Child, Preschool ; Antimalarials/adverse effects ; Mali/epidemiology ; Seasons ; Malaria/epidemiology ; Sulfadoxine/adverse effects ; Amodiaquine/adverse effects ; Drug Combinations ; Chemoprevention/adverse effects ; Piperazines ; Quinolines ; Artemisinins
    Chemical Substances artenimol (6A9O50735X) ; Antimalarials ; piperaquine (A0HV2Q956Y) ; Sulfadoxine (88463U4SM5) ; Amodiaquine (220236ED28) ; Drug Combinations ; Piperazines ; Quinolines ; Artemisinins
    Language English
    Publishing date 2024-01-15
    Publishing country United States
    Document type Randomized Controlled Trial ; Journal Article
    ZDB-ID 3019-3
    ISSN 1537-6613 ; 0022-1899
    ISSN (online) 1537-6613
    ISSN 0022-1899
    DOI 10.1093/infdis/jiad387
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Prevalence and Factors Associated With Surgical Site Infections in the University Clinics of Traumatology and Urology of the National University Hospital Centre Hubert Koutoukou Maga in Cotonou.

    Dégbey, Cyriaque / Kpozehouen, Alphonse / Coulibaly, Drissa / Chigblo, Pascal / Avakoudjo, Josué / Ouendo, Edgard-Marius / Hans-Moevi, Aristote

    Frontiers in public health

    2021  Volume 9, Page(s) 629351

    Abstract: Objectives: ...

    Abstract Objectives:
    MeSH term(s) Benin ; Humans ; Prevalence ; Retrospective Studies ; Surgical Wound Infection/epidemiology ; Traumatology ; Urology
    Language English
    Publishing date 2021-02-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2711781-9
    ISSN 2296-2565 ; 2296-2565
    ISSN (online) 2296-2565
    ISSN 2296-2565
    DOI 10.3389/fpubh.2021.629351
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Evolution of Malaria Incidence in Five Health Districts, in the Context of the Scaling Up of Seasonal Malaria Chemoprevention, 2016 to 2018, in Mali.

    Sacko, Aissata / Sagara, Issaka / Berthé, Ibrahima / Diarra, Modibo / Cissoko, Mady / Diarra, Souleymane S / Coulibaly, Drissa / Sanogo, Moussa / Dicko, Alassane

    International journal of environmental research and public health

    2021  Volume 18, Issue 2

    Abstract: Context: In Mali, malaria transmission is seasonal, exposing children to high morbidity and mortality. A preventative strategy called Seasonal Malaria Chemoprevention (SMC) is being implemented, consisting of the distribution of drugs at monthly ... ...

    Abstract Context: In Mali, malaria transmission is seasonal, exposing children to high morbidity and mortality. A preventative strategy called Seasonal Malaria Chemoprevention (SMC) is being implemented, consisting of the distribution of drugs at monthly intervals for up to 4 months to children between 3 and 59 months of age during the period of the year when malaria is most prevalent. This study aimed to analyze the evolution of the incidence of malaria in the general population of the health districts of Kati, Kadiolo, Sikasso, Yorosso, and Tominian in the context of SMC implementation.
    Methods: This is a transversal study analyzing the routine malaria data and meteorological data of Nasa Giovanni from 2016 to 2018. General Additive Model (GAM) analysis was performed to investigate the relationship between malaria incidence and meteorological factors.
    Results: From 2016 to 2018, the evolution of the overall incidence in all the study districts was positively associated with the relative humidity, rainfall, and minimum temperature components. The average monthly incidence and the relative humidity varied according to the health district, and the average temperature and rainfall were similar. A decrease in incidence was observed in children under five years old in 2017 and 2018 compared to 2016.
    Conclusion: A decrease in the incidence of malaria was observed after the SMC rounds. SMC should be applied at optimal periods.
    MeSH term(s) Antimalarials/therapeutic use ; Chemoprevention ; Child ; Child, Preschool ; Humans ; Incidence ; Malaria/epidemiology ; Malaria/prevention & control ; Mali/epidemiology ; Seasons
    Chemical Substances Antimalarials
    Language English
    Publishing date 2021-01-19
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1660-4601
    ISSN (online) 1660-4601
    DOI 10.3390/ijerph18020840
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Gene expression analyses reveal differences in children's response to malaria according to their age.

    Tebben, Kieran / Yirampo, Salif / Coulibaly, Drissa / Koné, Abdoulaye K / Laurens, Matthew B / Stucke, Emily M / Dembélé, Ahmadou / Tolo, Youssouf / Traoré, Karim / Niangaly, Amadou / Berry, Andrea A / Kouriba, Bourema / Plowe, Christopher V / Doumbo, Ogobara K / Lyke, Kirsten E / Takala-Harrison, Shannon / Thera, Mahamadou A / Travassos, Mark A / Serre, David

    Nature communications

    2024  Volume 15, Issue 1, Page(s) 2021

    Abstract: In Bandiagara, Mali, children experience on average two clinical malaria episodes per year. However, even in the same transmission area, the number of uncomplicated symptomatic infections, and their parasitemia, can vary dramatically among children. We ... ...

    Abstract In Bandiagara, Mali, children experience on average two clinical malaria episodes per year. However, even in the same transmission area, the number of uncomplicated symptomatic infections, and their parasitemia, can vary dramatically among children. We simultaneously characterize host and parasite gene expression profiles from 136 Malian children with symptomatic falciparum malaria and examine differences in the relative proportion of immune cells and parasite stages, as well as in gene expression, associated with infection and or patient characteristics. Parasitemia explains much of the variation in host and parasite gene expression, and infections with higher parasitemia display proportionally more neutrophils and fewer T cells, suggesting parasitemia-dependent neutrophil recruitment and/or T cell extravasation to secondary lymphoid organs. The child's age also strongly correlates with variations in gene expression: Plasmodium falciparum genes associated with age suggest that older children carry more male gametocytes, while variations in host gene expression indicate a stronger innate response in younger children and stronger adaptive response in older children. These analyses highlight the variability in host responses and parasite regulation during P. falciparum symptomatic infections and emphasize the importance of considering the children's age when studying and treating malaria infections.
    MeSH term(s) Child ; Humans ; Male ; Adolescent ; Parasitemia/genetics ; Malaria ; Gene Expression Profiling ; Malaria, Falciparum/genetics ; Cell Movement
    Language English
    Publishing date 2024-03-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-024-46416-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Gene expression analyses reveal differences in children's response to malaria according to their age.

    Tebben, Kieran / Yirampo, Salif / Coulibaly, Drissa / Koné, Abdoulaye / Laurens, Matthew / Stucke, Emily / Dembélé, Ahmadou / Tolo, Youssouf / Traoré, Karim / Niangaly, Ahmadou / Berry, Andrea / Kouriba, Bourema / Plowe, Christopher / Doumbo, Ogobara / Lyke, Kirsten / Takala-Harrison, Shannon / Thera, Mahamadou / Travassos, Mark / Serre, David

    Research square

    2023  

    Abstract: In Bandiagara, Mali, children experience on average two clinical malaria episodes per season. However, even in the same transmission area, the number of uncomplicated symptomatic infections, and their parasitemia, vary dramatically among children. To ... ...

    Abstract In Bandiagara, Mali, children experience on average two clinical malaria episodes per season. However, even in the same transmission area, the number of uncomplicated symptomatic infections, and their parasitemia, vary dramatically among children. To examine the factors contributing to these variations, we simultaneously characterized the host and parasite gene expression profiles from 136 children with symptomatic falciparum malaria and analyzed the expression of 9,205 human and 2,484 Plasmodium genes. We used gene expression deconvolution to estimate the relative proportion of immune cells and parasite stages in each sample and to adjust the differential gene expression analyses. Parasitemia explained much of the variation in both host and parasite gene expression and revealed that infections with higher parasitemia had more neutrophils and fewer T cells, suggesting parasitemia-dependent neutrophil recruitment and/or T cell extravasation to secondary lymphoid organs. The child's age was also strongly correlated with gene expression variations. Plasmodium falciparum genes associated with age suggested that older children carried more male gametocytes, while host genes associated with age indicated a stronger innate response (through TLR and NLR signaling) in younger children and stronger adaptive immunity (through TCR and BCR signaling) in older children. These analyses highlight the variability in host responses and parasite regulation during P. falciparum symptomatic infections and emphasize the importance of considering the children's age when studying and treating malaria infections.
    Language English
    Publishing date 2023-10-27
    Publishing country United States
    Document type Preprint
    DOI 10.21203/rs.3.rs-3487114/v1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Conference proceedings ; Online: Efficacy of two anthelmintics against gastrointestinal nematodes of sheep in the silvopastoral zone of Senegal, Mali and Burkina Faso

    Coulibaly, Mamadou / Beye, Aminata / Traoré, Linda Cletchio Gabriella / Roessler, Regina / Coulibaly, Hawa / Coulibaly, Drissa / Mbaye, Tamsir / Fall Ba, Mariéme / Sanon, Hadja / Sanou, Sita / Schlecht, Eva / Heckendorn, Felix

    2023  

    Abstract: Gastrointestinal nematodes (GIN) are a major impediment to sheep health and productivity. Frequent use and under dosing of chemical anthelmintics (AH) have led to the development of GIN populations which are resistant to these drugs in many parts of the ... ...

    Abstract Gastrointestinal nematodes (GIN) are a major impediment to sheep health and productivity. Frequent use and under dosing of chemical anthelmintics (AH) have led to the development of GIN populations which are resistant to these drugs in many parts of the world. In West Africa, the importance of GIN infections in sheep is poorly documented and the potential problem of AH resistance is neglected. We therefore conducted an on-farm study to determine the efficacy of two AH (Albendazole and Ivermectine) that are frequently used in Mali, Burkina Faso and Senegal, the focal countries of the EU-funded project SustainSahel. Sheep carrying natural GIN infections were selected from another study on GIN prevalence and infestation intensity. In each country, 24 male sheep with a minimum faecal egg count of 500 eggs per gram were selected for the efficacy study. Sheep were randomly allocated to 3 treatment groups of 8 animals: Ivomec® (Ivermectin), Valbazen® (Albendazole), and Control (without treatment). AH doses were administered according to the manufacturers’ instructions after weighing the animals, namely Valbazen (oral) at 7.5 mg kg-1 body weight, Ivomec (subcutaneous) at 0.2 mg kg-1 body weight. The faecal egg count reduction test (FECRT), as recommended by World Association for the Advancement of Veterinary Parasitology, was used to determine anthelmintic efficacy. For Ivomec®, FECR were 97 %, 95 % confidence interval (CI) (89%-100 %); 97 %, CI (93%-99 %) and 56 %, CI (24%-76 %) in Burkina Faso, Mali and Senegal, respectively. These results point to AH resistance of GIN to Ivermectin in Burkina Faso and confirm resistance to this drug in Senegal. In Mali, however, ivermectin did not show reduced efficacy. For Valbazen®, FECR were 99 %, 95 % CI (96%-100 %); 100 %, CI (99%-100 %) and 75 %, CI (43%-90 %) in Burkina Faso, Mali and Senegal, respectively. This corresponds to full efficacy of Albendazol in Mali and Burkina Faso and AH resistance in Senegal. We conclude that GIN resistance to both anthelmintics is present in ...
    Keywords Sheep and goats ; Health and welfare ; Africa
    Subject code 630
    Language English
    Publisher CUVILLIER Verlag
    Publishing country dk
    Document type Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Conference proceedings ; Online: Prevalence and intensity of gastrointestinal nematode infection in small ruminants in three West African countries

    Traoré, Linda Cletchio Gabriella / Coulibaly, Mamadou / Beye, Aminata / Heckendorn, Felix / Sanon, H. Oumou / Sanou, Sita / Coulibaly, Hawa / Coulibaly, Drissa / Mbaye, Tamsir / Fall Ba, Mariéme / Schlecht, Eva / Roessler, Regina

    2023  

    Abstract: This study was carried out to provide missing information on the prevalence and intensity of gastrointestinal nematode (GIN) infections of small ruminants in three West African countries. The use of communal grazing areas in these countries favours the ... ...

    Abstract This study was carried out to provide missing information on the prevalence and intensity of gastrointestinal nematode (GIN) infections of small ruminants in three West African countries. The use of communal grazing areas in these countries favours the spread of GIN infections across small ruminants and may reduce production performances and herders’ income. Faecal samples of 1,235 small ruminants were collected in Burkina Faso, Mali and Senegal in late dry (May), rainy (August) and early dry (November) season of 2022. Individual Faecal Egg Counts (FEC) were performed by a modified McMaster technique. Animals were selected in several villages according to the following parameters: species (sheep, goats), age (young: 6–12 months, adult: >12 months) and sex (male, female). The Kruskal-Wallis test was applied to assess the influence of these parameters on FEC intensity, expressed as eggs per gram of faeces (EPG). The overall prevalence of GIN was 70.8 %, 82.6 % and 66.8 % in Burkina Faso, Mali and Senegal, respectively. In all countries, the rainy season corresponded to the highest infection period. The mean ± standard deviation of EPG across all countries was 230 ±350, 1,023 ±1,176 and 424 ±352 for late dry, rainy and early dry season. Infection intensity was higher in young than in adult animals, and in male than in female animals in the rainy season, whereas no differences could be observed between these groups in the late dry season. Similarly, there was no significant difference in the mean EPG between sheep and goats late dry season. The results indicate that better monitoring and control of GIN infections are necessary during the rainy season and especially in young and male sheep and goats. For further study it would also be interesting to learn more about anthelmintic resistance in GIN and non-allopathic control options.
    Keywords Sheep and goats ; Health and welfare ; Africa
    Subject code 630
    Language English
    Publisher CUVILLIER Verlag
    Publishing country dk
    Document type Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Conference proceedings ; Online: Use of trees and shrub by farmers to control gastrointestinal nematodes (GIN) in extensive livestock production systems of West Africa

    Beye, Aminata / Traoré, Linda Cletchio Gabriella / Coulibaly, Mamadou / Mbaye, Tamsir / Schlecht, Eva / Fall Ba, Mariéme / Ngom, Daouda / Heckendorn, Felix / Roessler, Regina / Sanon, Hadja / Coulibaly, Drissa / Coulibaly, Hawa / Sanou, Sita / Fall, Assan G.

    2023  

    Abstract: Traditional veterinary practices have taken a back seat to modern veterinary medicine in livestock health management in Africa. However, the latter is not able to cope with all health problems on livestock farms, especially in rural areas where access to ...

    Abstract Traditional veterinary practices have taken a back seat to modern veterinary medicine in livestock health management in Africa. However, the latter is not able to cope with all health problems on livestock farms, especially in rural areas where access to quality veterinary drugs and services is not available. Adding to this is the low purchasing power of livestock farmers. They are forced to resort to traditional practices to treat their animals in case of disease, which is especially true for gastrointestinal nematodes (GIN) in small ruminants. This study aimed to identify, with the herders, the local woody plant species usually used to treat parasitic infections of small ruminants in West Africa. Indeed, in traditional medicine, woody species represent about 65 % of the most important African medicinal plants. An ethno botanical survey based on semi-structured interviews was conducted with 370 herders and agropastoralists in Senegal, Mali and Burkina Faso between June and July 2021. More than 60 % of the respondents stated that the use of tree-based remedies has a positive impact on animal health. Out of 81 herders surveyed in Senegal, 42.0 % used woody plants for animal health treatment. In Burkina Faso, 28.7 % out of 159 farmers used ligneous plants to treat their animals against gastrointestinal strongyles. In Mali, 16.4 % out of 130 farmers used parts of trees to treat small ruminants against GIN. Across the three countries, 20 woody species belonging to 10 botanical families were identified as being regularly used to treat GIN. Khaya senegalensis, Azadirachta indica and Faidherbia albida were the most commonly cited species, and at family level Fabaceae (67 %) dominated before Meliaceae (17 %) and Combretaceae (17 %). Leaves (50 %), pods (33 %) and bark (17 %) were the organs mainly used to produce herbal anthelmintics. The cross-country comparison of results revealed that, although farmers have a good knowledge of effective plant-based GIN control, preparation formulae and application doses are often ...
    Keywords Sheep and goats ; Health and welfare ; Africa
    Subject code 580
    Language English
    Publisher CUVILLIER Verlag
    Publishing country dk
    Document type Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Monitoring of the Sensitivity In Vivo of

    Diarra, Modibo / Coulibaly, Drissa / Tapily, Amadou / Guindo, Boureima / Sanogo, Koualy / Koné, Diakalia / Koné, Youssouf / Koné, Karim / Bathily, Aboudramane / Yattara, Oumar / Thera, Mahamadou A / Dicko, Alassane / Djimdé, Abdoulaye A / Sagara, Issaka

    Tropical medicine and infectious disease

    2021  Volume 6, Issue 1

    Abstract: In Mali, since 2007, artemether-lumefantrine has been the first choice against uncomplicated malaria. Despite its effectiveness, a rapid selection of markers of resistance to partner drugs has been documented. This work evaluated the treatment according ... ...

    Abstract In Mali, since 2007, artemether-lumefantrine has been the first choice against uncomplicated malaria. Despite its effectiveness, a rapid selection of markers of resistance to partner drugs has been documented. This work evaluated the treatment according to the World Health Organization's standard 28-day treatment method. The primary endpoint was the clinical and parasitological response corrected by a polymerase chain reaction. It was more than 99.9 percent, the proportion of patients with anemia significantly decrease compared to baseline (
    Language English
    Publishing date 2021-01-24
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2414-6366
    ISSN (online) 2414-6366
    DOI 10.3390/tropicalmed6010013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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