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Kasozi KI, MacLeod ET, Welburn SC. One Health policy for combatting African trypanocide resistance. One Health 2024; 19:100871. [PMID: 39224765 PMCID: PMC11367463 DOI: 10.1016/j.onehlt.2024.100871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/29/2024] [Accepted: 08/02/2024] [Indexed: 09/04/2024] Open
Abstract
The rise of African trypanocide resistance (ATr) is influenced by various factors such as evolutionary changes in the pathogen, the presence of resistance genes in the population, poor policy decisions, limited private-public partnerships to engage local communities, and insufficient funding for the development of new drugs over the past sixty years. These challenges have been exacerbated by the inadequate implementation of drug liberalization policies in the mid 20th century, leading to poor pharmacovigilance practices for veterinary drugs in low and middle income countries (LMICs). One health (OH), a disease management framework, provides practical solutions for addressing ATr, drawing on its success in managing previous epidemics like avian influenza in 2004 and the recent COVID-19 pandemic, where institutional collaborations were rapidly established. To combat ATr, OH initiatives involving both international and local partners at the policy and grassroots levels are crucial to generate community interest. The importance of political commitment, media involvement, and nongovernmental organizations cannot be overstated, as they are essential for resource mobilization and long-term sustainability in LMICs.
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Affiliation(s)
- Keneth Iceland Kasozi
- Infection Medicine, Deanery of Biomedical Sciences, Edinburgh Medical School, College of Medicine and Veterinary Medicine, The University of Edinburgh, 1 George Square, Edinburgh EH8 9JZ, United Kingdom
- School of Medicine, Kabale University, Kabale University, Box 317, Kabale, Uganda
| | - Ewan Thomas MacLeod
- Infection Medicine, Deanery of Biomedical Sciences, Edinburgh Medical School, College of Medicine and Veterinary Medicine, The University of Edinburgh, 1 George Square, Edinburgh EH8 9JZ, United Kingdom
| | - Susan Christina Welburn
- Infection Medicine, Deanery of Biomedical Sciences, Edinburgh Medical School, College of Medicine and Veterinary Medicine, The University of Edinburgh, 1 George Square, Edinburgh EH8 9JZ, United Kingdom
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, The School of Tropical Medicine, The First Affiliated Hospital, Hainan Medical University, Haikou 571199, Hainan, People's Republic of China
- School of Global Health, Chinese Centre for Global Tropical Disease Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China
- Zhejiang University - University of Edinburgh Joint Institute, Zhejiang University, International Campus, 718 East Haizhou Road, Haining 314400, People's Republic of China
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Serfaty A, Rodrigues TC. Musculoskeletal involvement in neglected tropical diseases: a comprehensive review. Skeletal Radiol 2024; 53:2143-2160. [PMID: 38267762 DOI: 10.1007/s00256-024-04595-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/26/2024]
Abstract
Neglected tropical diseases (NTDs) encompass a group of diseases predominantly found in tropical regions, with origins dating back to their inclusion in the United Nations Millennium Development Goals in 2000. This initiative aimed to raise awareness and global funding to combat these diseases, which thrive in areas with limited sanitation, healthcare, and education. NTDs are caused by various pathogens such as bacteria, fungi, parasites, and viruses and affect over two billion individuals in resource-poor communities, leading to preventable deaths and devastating consequences. While the musculoskeletal system is only occasionally affected, the resulting chronic disabilities prevent individuals from working, posing a significant socioeconomic burden in this region of the world. Some NTDs exhibit distinct imaging features, and radiologists need to be aware of these characteristics to facilitate early treatment. In this review, we delve into musculoskeletal NTDs, focusing on clinical features and imaging findings, differential diagnosis, and clinical management.
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Affiliation(s)
| | - Tatiane Cantarelli Rodrigues
- Department of Radiology, Hospital do Coração (HCor), São Paulo, SP, Brazil
- ALTA Diagnostic Center (DASA Group), São Paulo, SP, Brazil
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Russ L, von Bülow V, Wrobel S, Stettler F, Schramm G, Falcone FH, Grevelding CG, Roderfeld M, Roeb E. Inverse Correlation of Th2-Specific Cytokines with Hepatic Egg Burden in S. mansoni-Infected Hamsters. Cells 2024; 13:1579. [PMID: 39329761 DOI: 10.3390/cells13181579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2024] [Revised: 09/16/2024] [Accepted: 09/18/2024] [Indexed: 09/28/2024] Open
Abstract
Schistosomiasis, a parasitic disease caused by Schistosoma spp., affects more than 250 million people worldwide. S. mansoni in particular affects the gastrointestinal tract and, through its eggs, induces a Th2 immune response leading to granuloma formation. The relationship between egg load and immune response is poorly understood. We investigated whether the quantity of parasitic eggs influences the immune response in S. mansoni-infected hamsters. The hepatic and intestinal egg load was assessed, and cytokine expression as well as the expression of three major egg-derived proteins were analyzed in monosex- and bisex-infected animals by qRT-PCR. Statistical correlations between egg load or egg-derived factors Ipse/alpha-1, kappa-5, and omega-1, and the immune response were analyzed in liver and colon tissue. Surprisingly, no correlation of the Th1 cytokines with the hepatic egg load was observed, while the Th2 cytokines Il4, Il5, and Il13 showed an inverse correlation in the liver but not in the colon. A longer embryogenesis of the parasitic eggs in the liver could explain this correlation. This conclusion is supported by the lack of any correlation with immune response in the colon, as the intestinal passage of the eggs is limited to a few days.
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Affiliation(s)
- Lena Russ
- Department of Gastroenterology, Justus Liebig University, 35392 Giessen, Germany
| | - Verena von Bülow
- Department of Gastroenterology, Justus Liebig University, 35392 Giessen, Germany
| | - Sarah Wrobel
- Department of Gastroenterology, Justus Liebig University, 35392 Giessen, Germany
| | - Frederik Stettler
- Department of Gastroenterology, Justus Liebig University, 35392 Giessen, Germany
| | - Gabriele Schramm
- Early Life Origins of Chronic Lung Diseases, Priority Research Area Chronic Lung Diseases, Research Center Borstel, Leibniz Lung Center, 23845 Borstel, Germany
| | - Franco H Falcone
- Institute of Parasitology, BFS, Justus Liebig University, 35392 Giessen, Germany
| | | | - Martin Roderfeld
- Department of Gastroenterology, Justus Liebig University, 35392 Giessen, Germany
| | - Elke Roeb
- Department of Gastroenterology, Justus Liebig University, 35392 Giessen, Germany
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Paller VGV, Belizario VY, Ancog RC, Alonte AJI, Jimenez JRD, Corales CG, Divina BP, Prada JM, Betson M. Socio-economic risk factors for intestinal helminthiases in selected endemic communities in Mindanao, the Philippines: a cross-sectional study. BMC Infect Dis 2024; 24:1012. [PMID: 39300345 DOI: 10.1186/s12879-024-09780-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 08/20/2024] [Indexed: 09/22/2024] Open
Abstract
BACKGROUND Parasitic neglected tropical diseases (NTDs) or 'infectious diseases of poverty' continue to affect the poorest communities in the world, including in the Philippines. Socio-economic conditions contribute to persisting endemicity of these infectious diseases. As such, examining these underlying factors may help identify gaps in implementation of control programs. This study aimed to determine the prevalence of schistosomiasis and soil-transmitted helminthiasis (STH) and investigate the role of socio-economic and risk factors in the persistence of these diseases in endemic communities in the Philippines. METHODS This cross-sectional study involving a total of 1,152 individuals from 386 randomly-selected households was conducted in eight municipalities in Mindanao, the Philippines. Participants were asked to submit fecal samples which were processed using the Kato-Katz technique to check for intestinal helminthiases. Moreover, each household head participated in a questionnaire survey investigating household conditions and knowledge, attitude, and practices related to intestinal helminthiases. Associations between questionnaire responses and intestinal helminth infection were assessed. RESULTS Results demonstrated an overall schistosomiasis prevalence of 5.7% and soil-transmitted helminthiasis prevalence of 18.8% in the study population. Further, the household questionnaire revealed high awareness of intestinal helminthiases, but lower understanding of routes of transmission. Potentially risky behaviors such as walking outside barefoot and bathing in rivers were common. There was a strong association between municipality and prevalence of helminth infection. Educational attainment and higher "practice" scores (relating to practices which are effective in controlling intestinal helminths) were inversely associated with soil-transmitted helminth infection. CONCLUSION Results of the study showed remaining high endemicity of intestinal helminthiases in the area despite ongoing control programs. Poor socio-economic conditions and low awareness about how intestinal helminthiases are transmitted may be among the factors hindering success of intestinal helminth control programs in the provinces of Agusan del Sur and Surigao del Norte. Addressing these sustainability gaps could contribute to the success of alleviating the burden of intestinal helminthiases in endemic areas.
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Affiliation(s)
- Vachel Gay V Paller
- Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, Laguna, The Philippines.
| | - Vicente Y Belizario
- Department of Parasitology, College of Public Health, University of the Philippines Manila, Manila, The Philippines
| | - Rico C Ancog
- School of Environmental Science and Management, University of the Philippines Los Baños, Laguna, The Philippines
| | - Allen Jethro I Alonte
- Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, Laguna, The Philippines
| | - Jasmine Renette D Jimenez
- Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, Laguna, The Philippines
| | - Christina G Corales
- School of Environmental Science and Management, University of the Philippines Los Baños, Laguna, The Philippines
| | - Billy P Divina
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna, The Philippines
| | - Joaquin M Prada
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, University of Surrey, Guildford, Surrey, UK
| | - Martha Betson
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, University of Surrey, Guildford, Surrey, UK.
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Perez RL, Chase J, Tanner R. Shared challenges to the control of complex intracellular neglected pathogens. Front Public Health 2024; 12:1423420. [PMID: 39324165 PMCID: PMC11422159 DOI: 10.3389/fpubh.2024.1423420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 08/13/2024] [Indexed: 09/27/2024] Open
Abstract
The complex intracellular pathogens Mycobacterium tuberculosis, Mycobacterium leprae, Leishmania spp., and Burkholderia pseudomallei, which cause tuberculosis, leprosy, leishmaniasis, and melioidosis respectively, represent major health threats with a significant global burden concentrated in low- and middle-income countries. While these diseases vary in their aetiology, pathology and epidemiology, they share key similarities in the biological and sociodemographic factors influencing their incidence and impact worldwide. In particular, their occurrence in resource-limited settings has important implications for research and development, disease prevalence and associated risk factors, as well as access to diagnostics and therapeutics. In accordance with the vision of the VALIDATE (VAccine deveLopment for complex Intracellular neglecteD pAThogeEns) Network, we consider shared challenges to the effective prevention, diagnosis and treatment of these diseases as shaped by both biological and social factors, illustrating the importance of taking an interdisciplinary approach. We further highlight how a cross-pathogen perspective may provide valuable insights for understanding and addressing challenges to the control of all four pathogens.
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Affiliation(s)
- Rebecca Lynn Perez
- Nuffield Department of Clinical Medicine, University of Oxford, Oxford, United Kingdom
- Wadham College, University of Oxford, Oxford, United Kingdom
| | - Jemima Chase
- Wadham College, University of Oxford, Oxford, United Kingdom
| | - Rachel Tanner
- Wadham College, University of Oxford, Oxford, United Kingdom
- Department of Biology, University of Oxford, Oxford, United Kingdom
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Satapathy P, Rustagi S, Kumar P, Khatib MN, Gaidhane S, Zahiruddin QS, Gaidhane AM, Neyazi M, Neyazi A. Understanding noma: WHO's recognition and the path forward in global health. Trans R Soc Trop Med Hyg 2024; 118:625-628. [PMID: 38708708 DOI: 10.1093/trstmh/trae031] [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: 01/26/2024] [Revised: 03/25/2024] [Accepted: 04/11/2024] [Indexed: 05/07/2024] Open
Abstract
The World Health Organization's (WHO) designation of noma as a neglected tropical disease (NTD) on 15 December 2023 marks a crucial advancement in global health efforts. This move sheds light on a condition predominantly affecting undernourished children in isolated regions of sub-Saharan Africa. Recognized as the 21st NTD, noma, or cancrum oris, is a serious condition leading to orofacial gangrene. The disease largely impacts young children and those with compromised immune systems, including individuals with human immunodeficiency virus or leukaemia. Determining the exact prevalence of noma is complex, hindered by rapid disease progression, societal stigma and a lack of reporting, especially in impoverished areas. The WHO's acknowledgment is a significant step, emphasizing the need for more in-depth research and resources to address this overlooked disease. It highlights the critical role of multifaceted prevention strategies, including economic empowerment, improved nutrition and enhanced vaccination efforts. This recognition is pivotal in guiding international health initiatives towards better outcomes for some of the most at-risk populations globally.
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Affiliation(s)
- Prakasini Satapathy
- Center for Global Health Research, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
- Medical Laboratories Techniques Department, AL-Mustaqbal University, 51001 Hillah, Babil, Iraq
| | - Sarvesh Rustagi
- School of Applied and Life Sciences, Uttaranchal University, Dehradun, Uttarakhand, India
| | - Pawan Kumar
- Global Center for Evidence Synthesis, Chandigarh 160036 India
- EvidenceSynthesis Lab, Kolkata 700156, India
| | - Mahalaqua Nazli Khatib
- Division of Evidence Synthesis, Global Consortium of Public Health and Research, Datta Meghe Institute of Higher Education, Wardha, India
| | - Shilpa Gaidhane
- One Health Centre, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education, Wardha, India
| | - Quazi Syed Zahiruddin
- Global Health Academy, Division of Evidence Synthesis, School of Epidemiology and Public Health and Research, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher education and Research, Wardha. India
| | - Abhay M Gaidhane
- South Asia Infant Feeding Research Network, Division of Evidence Synthesis, Global Consortium of Public Health and Research, Datta Meghe Institute of Higher Education, Wardha, India
| | - Mehrab Neyazi
- Jawaharlal Nehru Medical College, and Global Health Academy, School of Epidemiology and Public Health, Datta Meghe Institute of Higher Education, Wardha, India
- Afghanistan Center for Epidemiological Studies, Herat, Afghanistan
| | - Ahmad Neyazi
- Jawaharlal Nehru Medical College, and Global Health Academy, School of Epidemiology and Public Health, Datta Meghe Institute of Higher Education, Wardha, India
- Scientific Affairs, Herat Regional Hospital, Herat, Afghanistan
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7
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Kozela E, Meneghetti P, Regev-Rudzki N, Torrecilhas AC, Porat Z. Subcellular particles for characterization of host-parasite interactions. Microbes Infect 2024; 26:105314. [PMID: 38367661 DOI: 10.1016/j.micinf.2024.105314] [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: 07/08/2023] [Revised: 01/14/2024] [Accepted: 02/13/2024] [Indexed: 02/19/2024]
Abstract
Parasitic diseases remain a major global health problem for humans. Parasites employ a variety of strategies to invade and survive within their hosts and to manipulate host defense mechanisms, always in the pathogen's favor. Extracellular vesicles (EVs), membrane-bound nanospheres carrying a variety of bioactive compounds, were shown to be released by the parasites during all stages of the infection, enabling growth and expansion within the host and adaptation to frequently changing environmental stressors. In this review, we discuss how the use of existing nanotechnologies and high-resolution imaging tools assisted in revealing the role of EVs during parasitic infections, enabling the quantitation, visualization, and detailed characterization of EVs. We discuss here the cases of malaria, Chagas disease and leishmaniasis as examples of parasitic neglected tropical diseases (NTDs). Unraveling the EVs' role in the NTD pathogenesis may enormously contribute to their early and reliable diagnostic, effective treatment, and prevention.
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Affiliation(s)
- Ewa Kozela
- Department of Biomolecular Sciences, Faculty of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Paula Meneghetti
- Universidade Federal de São Paulo (UNIFESP), Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Departamento de Ciências Farmacêuticas, Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Brazil
| | - Neta Regev-Rudzki
- Department of Biomolecular Sciences, Faculty of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Ana Claudia Torrecilhas
- Universidade Federal de São Paulo (UNIFESP), Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Departamento de Ciências Farmacêuticas, Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Brazil.
| | - Ziv Porat
- Flow Cytometry Unit, Life Sciences Core Facilities, WIS, Rehovot, Israel.
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Ofori B, Agoha RK, Bokoe EK, Armah ENA, Misita Morang'a C, Sarpong KAN. Leveraging wastewater-based epidemiology to monitor the spread of neglected tropical diseases in African communities. Infect Dis (Lond) 2024; 56:697-711. [PMID: 38922811 DOI: 10.1080/23744235.2024.2369177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 06/07/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024] Open
Abstract
Neglected tropical diseases continue to cause a significant burden worldwide, with Africa accounting for more than one-third of the global burden. Over the past decade, progress has been made in eliminating, controlling, and eradicating these diseases in Africa. By December 2022, 47 out of 54 African countries had eliminated at least one neglected tropical disease, and more countries were close to achieving this milestone. Between 2020 and 2021, there was an 80 million reduction in people requiring intervention. However, continued efforts are needed to manage neglected tropical diseases and address their social and economic burden, as they deepen marginalisation and stigmatisation. Wastewater-based epidemiology involves analyzing wastewater to detect and quantify biomarkers of disease-causing pathogens. This approach can complement current disease surveillance systems in Africa and provide an additional layer of information for monitoring disease spread and detecting outbreaks. This is particularly important in Africa due to limited traditional surveillance methods. Wastewater-based epidemiology also provides a tsunami-like warning system for neglected tropical disease outbreaks and can facilitate timely intervention and optimised resource allocation, providing an unbiased reflection of the community's health compared to traditional surveillance systems. In this review, we highlight the potential of wastewater-based epidemiology as an innovative approach for monitoring neglected tropical disease transmission within African communities and improving existing surveillance systems. Our analysis shows that wastewater-based epidemiology can enhance surveillance of neglected tropical diseases in Africa, improving early detection and management of Buruli ulcers, hookworm infections, ascariasis, schistosomiasis, dengue, chikungunya, echinococcosis, rabies, and cysticercosis for better disease control.
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Affiliation(s)
- Benedict Ofori
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), University of Ghana, Accra, Ghana
- Department of Biochemistry, Cell and Molecular Biology, University of Ghana, Accra, Ghana
| | - Righteous Kwaku Agoha
- Department of Biochemistry, Cell and Molecular Biology, University of Ghana, Accra, Ghana
| | - Edem Kwame Bokoe
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), University of Ghana, Accra, Ghana
- Department of Biochemistry, Cell and Molecular Biology, University of Ghana, Accra, Ghana
| | | | - Collins Misita Morang'a
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), University of Ghana, Accra, Ghana
- Department of Biochemistry, Cell and Molecular Biology, University of Ghana, Accra, Ghana
| | - Kwabena Amofa Nketia Sarpong
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), University of Ghana, Accra, Ghana
- Department of Biochemistry, Cell and Molecular Biology, University of Ghana, Accra, Ghana
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9
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Andrés-Rodríguez J, González-Montero MC, García-Fernández N, Calvo-Álvarez E, Pérez-Pertejo MY, Reguera-Torres RM, Balaña-Fouce R, García-Estrada C. Free Radical Production Induced by Nitroimidazole Compounds Lead to Cell Death in Leishmania infantum Amastigotes. Molecules 2024; 29:4041. [PMID: 39274889 PMCID: PMC11396368 DOI: 10.3390/molecules29174041] [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: 07/23/2024] [Revised: 08/16/2024] [Accepted: 08/22/2024] [Indexed: 09/16/2024] Open
Abstract
Leishmania infantum is the vector-borne trypanosomatid parasite causing visceral leishmaniasis in the Mediterranean basin. This neglected tropical disease is treated with a limited number of obsolete drugs that are not exempt from adverse effects and whose overuse has promoted the emergence of resistant pathogens. In the search for novel antitrypanosomatid molecules that help overcome these drawbacks, drug repurposing has emerged as a good strategy. Nitroaromatic compounds have been found in drug discovery campaigns as promising antileishmanial molecules. Fexinidazole (recently introduced for the treatment of stages 1 and 2 of African trypanosomiasis), and pretomanid, which share the nitroimidazole nitroaromatic structure, have provided antileishmanial activity in different studies. In this work, we have tested the in vitro efficacy of these two nitroimidazoles to validate our 384-well high-throughput screening (HTS) platform consisting of L. infantum parasites emitting the near-infrared fluorescent protein (iRFP) as a biomarker of cell viability. These molecules showed good efficacy in both axenic and intramacrophage amastigotes and were poorly cytotoxic in RAW 264.7 and HepG2 cultures. Fexinidazole and pretomanid induced the production of ROS in axenic amastigotes but were not able to inhibit trypanothione reductase (TryR), thus suggesting that these compounds may target thiol metabolism through a different mechanism of action.
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Affiliation(s)
- Julia Andrés-Rodríguez
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - María-Cristina González-Montero
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Nerea García-Fernández
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Estefanía Calvo-Álvarez
- Department of Pharmacological and Biomolecular Sciences, University of Milan, 20133 Milan, Italy
| | - María-Yolanda Pérez-Pertejo
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
- Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Rosa-María Reguera-Torres
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
- Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Rafael Balaña-Fouce
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
- Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Carlos García-Estrada
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
- Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
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10
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Lv JJ, Zhang YC, Li XY, Yang CH, Wang X. Global, regional, national epidemiology and trends of neglected tropical diseases in youths and young adults aged 15-39 years from 1990 to 2019: findings from the global burden of disease study 2019. BMC Public Health 2024; 24:2088. [PMID: 39090572 PMCID: PMC11295676 DOI: 10.1186/s12889-024-19190-6] [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: 12/05/2023] [Accepted: 06/18/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND In recent years, the escalating concern for neglected tropical diseases (NTDs) has been recognized as a pressing global health issue. This concern is acutely manifested in low- and middle-income countries, where there is an escalating prevalence among adolescents and young adults. The burgeoning of these conditions threatens to impair patients' occupational capabilities and overall life quality. Despite the considerable global impact of NTDs, comprehensive studies focusing on their impact in younger populations remain scarce. Our study aims to describe the global prevalence of neglected tropical diseases among people aged 15 to 39 years over the 30-year period from 1990 to 2019, and to project the disease burden of the disease up to 2040. METHODS Annual data on incident cases, mortality, and disability-adjusted life years (DALYs) for NTDs were procured from the Global Burden of Disease Study 2019 (GBD 2019). These data were stratified by global and regional distribution, country, social development index (SDI), age, and sex. We computed age-standardized rates (ASRs) and the numbers of incident cases, mortalities, and DALYs from 1990 to 2019. The estimated annual percentage change (EAPC) in the ASRs was calculated to evaluate evolving trends. RESULTS In 2019, it was estimated that there were approximately 552 million NTD cases globally (95% Uncertainty Interval [UI]: 519.9 million to 586.3 million), a 29% decrease since 1990. South Asia reported the highest NTD prevalence, with an estimated 171.7 million cases (95% UI: 150.4 million to 198.6 million). Among the five SDI categories, the prevalence of NTDs was highest in the moderate and low SDI regions in 1990 (approximately 270.5 million cases) and 2019 (approximately 176.5 million cases). Sub-Saharan Africa recorded the most significant decline in NTD cases over the past three decades. Overall, there was a significant inverse correlation between the disease burden of NTDs and SDI. CONCLUSION NTDs imposed over half a billion incident cases and 10.8 million DALYs lost globally in 2019-exerting an immense toll rivaling major infectious and non-communicable diseases. Encouraging declines in prevalence and disability burdens over the past three decades spotlight the potential to accelerate progress through evidence-based allocation of resources. Such strategic integration could substantially enhance public awareness about risk factors and available treatment options.
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Affiliation(s)
- Jia-Jie Lv
- Department of Vascular Surgery, School of Medicine, Shanghai Putuo People's Hospital Tongji University, No.1291 Jiangning Road, Huangpu District, Shanghai, 200060, China
- Department of Vascular Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, No.639 Zhizaoju Road, Huangpu District, Shanghai, 200011, People's Republic of China
| | - Yi-Chi Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine, No.639 Zhizaoju Road, Huangpu District, Shanghai, 200011, China
| | - Xin-Yu Li
- Department of Vascular Surgery, School of Medicine, Shanghai Putuo People's Hospital Tongji University, No.1291 Jiangning Road, Huangpu District, Shanghai, 200060, China
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine, No.639 Zhizaoju Road, Huangpu District, Shanghai, 200011, China
| | - Cheng-Hao Yang
- Department of Vascular Surgery, School of Medicine, Shanghai Putuo People's Hospital Tongji University, No.1291 Jiangning Road, Huangpu District, Shanghai, 200060, China.
- Department of Vascular Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, No.639 Zhizaoju Road, Huangpu District, Shanghai, 200011, People's Republic of China.
| | - Xuhui Wang
- Department of Vascular Surgery, School of Medicine, Shanghai Putuo People's Hospital Tongji University, No.1291 Jiangning Road, Huangpu District, Shanghai, 200060, China.
- Department of Vascular Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, No.639 Zhizaoju Road, Huangpu District, Shanghai, 200011, People's Republic of China.
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11
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Schemczssen-Graeff Z, Silva CR, de Freitas PNN, Constantin PP, Pileggi SAV, Olchanheski LR, Pileggi M. Probiotics as a strategy for addressing helminth infections in low-income countries: Working smarter rather than richer. Biochem Pharmacol 2024; 226:116363. [PMID: 38871336 DOI: 10.1016/j.bcp.2024.116363] [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: 03/26/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 06/15/2024]
Abstract
Helminth infections, which affect approximately 1.5 billion individuals worldwide (mainly children), are common in low- and middle-income tropical countries and can lead to various diseases. One crucial factor affecting the occurrence of these diseases is the reduced diversity of the gut microbiome due to antibiotic use. This reduced diversity compromises immune health in hosts and alters host gene expression through epigenetic mechanisms. Helminth infections may produce complex biochemical signatures that could serve as therapeutic targets. Such therapies include next-generation probiotics, live biotherapeutic products, and biochemical drug approaches. Probiotics can bind ferric hydroxide, reducing the iron that is available to opportunistic microorganisms. They also produce short-chain fatty acids associated with immune response modulation, oral tolerance facilitation, and inflammation reduction. In this review, we examine the potential link between these effects and epigenetic changes in immune response-related genes by analyzing methyltransferase-related genes within probiotic strains discussed in the literature. The identified genes were only correlated with methylation in bacterial genes. Various metabolic interactions among hosts, helminth parasites, and intestinal microbiomes can impact the immune system, potentially aiding or hindering worm expulsion through chemical signaling. Implementing a comprehensive strategy using probiotics may reduce the impact of drug-resistant helminth strains.
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Affiliation(s)
- Zelinda Schemczssen-Graeff
- Comparative Immunology Laboratory, Department of Microbiology, Parasitology, and Pathology, Federal University of Paraná, Curitiba, Brazil
| | - Caroline Rosa Silva
- Department of Biotechnology, Genetics and Cell Biology, State University of Maringá, Maringá, Brazil
| | | | - Paola Pereira Constantin
- Department of Biotechnology, Genetics and Cell Biology, State University of Maringá, Maringá, Brazil
| | - Sônia Alvim Veiga Pileggi
- Environmental Microbiology Laboratory, Life Sciences and Health Institute, Structural and Molecular Biology, and Genetics Department, Ponta Grossa State University, Ponta Grossa, Brazil
| | - Luiz Ricardo Olchanheski
- Environmental Microbiology Laboratory, Life Sciences and Health Institute, Structural and Molecular Biology, and Genetics Department, Ponta Grossa State University, Ponta Grossa, Brazil
| | - Marcos Pileggi
- Environmental Microbiology Laboratory, Life Sciences and Health Institute, Structural and Molecular Biology, and Genetics Department, Ponta Grossa State University, Ponta Grossa, Brazil.
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12
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Alves NO, Oshiro JA, Silva YC, Pacher GC, Casaril AE, Rizk YS, Uehara SNO, Paniago AMM, Andrade ILX, Arruda CCP, Oliveira AG. VL-HIV co-infection with Leishmania containing skin lesions resembling para-kala-azar dermal leishmaniasis. PLoS Negl Trop Dis 2024; 18:e0012438. [PMID: 39186781 PMCID: PMC11379370 DOI: 10.1371/journal.pntd.0012438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/06/2024] [Accepted: 08/06/2024] [Indexed: 08/28/2024] Open
Abstract
Leishmaniases are a group of neglected vector-borne infectious diseases that are among the six priority endemic diseases worldwide. Visceral leishmaniasis (VL) is the most severe clinical manifestation, characterized by systemic and chronic visceral involvement and high mortality in immunosuppressed and untreated patients. VL can be complicated into post-kala-azar dermal leishmaniasis (PKDL), and when dermatologic disorders occur simultaneously with active VL, an intermediate clinical form called para-kala-azar dermal leishmaniasis (para-KDL) occurs. This clinical form is of great epidemiological relevance, as humans act as a source of infection for vectorial transmission. In the Americas, Brazil is among the seven countries responsible for more than 90% of VL cases, though reports of PKDL and para-KDL are rare. This paper presents three cases of VL-HIV co-infection with Leishmania-containing skin lesions resembling para-kala-azar dermal leishmaniasis. The cases were investigated by the team from the Infectious Diseases Department of University Hospital (HUMAP/UFMS) in Mato Grosso do Sul, Brazil. The three patients exhibited skin lesions where amastigote forms of L. (L.) infantum were identified. All cases exhibited similar clinical manifestations of para-KDL, including fever, hepatosplenomegaly, pancytopenia, and disseminated skin lesions. The study described the prevalence of comorbidities, the incidence of VL relapse, and the therapeutic regimen in relation to the outcomes. The study underscores the importance of follow-up and secondary prophylaxis in patients with VL, which are essential for the efficacy of the treatment. Furthermore, the study provides insight into the potential epidemiological profile of para-KDL cases in Brazil, which contributes to the development of more efficient clinical management strategies for patients.
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Affiliation(s)
- Natália O Alves
- Laboratory of Human Parasitology, Institute of Biosciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Graduate Program in Infectious and Parasitic Diseases, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Jéssica A Oshiro
- Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Yunna C Silva
- Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Gabriela C Pacher
- Laboratory of Human Parasitology, Institute of Biosciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Graduate Program in Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Aline E Casaril
- Laboratory of Human Parasitology, Institute of Biosciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Yasmin S Rizk
- Laboratory of Human Parasitology, Institute of Biosciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Silvia N O Uehara
- Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Maria Aparecida Pedrossian University Hospital-Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Anamaria M M Paniago
- Graduate Program in Infectious and Parasitic Diseases, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Maria Aparecida Pedrossian University Hospital-Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Isadora L X Andrade
- Maria Aparecida Pedrossian University Hospital-Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Carla C P Arruda
- Laboratory of Human Parasitology, Institute of Biosciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Graduate Program in Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Alessandra G Oliveira
- Laboratory of Human Parasitology, Institute of Biosciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Graduate Program in Infectious and Parasitic Diseases, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
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13
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Chagas ÉCDS, Ferreira FADS, Mwangi VI, Terrazas WCM, Becker JN, Simões RDC, Pacífico EMSS, Silva ASD, Marques CDS, Chagas ECDS, Machado MB, Figueira EAG, Castro DBD, Ramos TCA, Oliveira JHD. Spatio-temporal analysis of American Tegumentary Leishmaniasis incidences in the Brazilian state of Amazonas: 2011 to 2022. Acta Trop 2024; 256:107266. [PMID: 38772433 DOI: 10.1016/j.actatropica.2024.107266] [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: 03/20/2024] [Revised: 05/17/2024] [Accepted: 05/18/2024] [Indexed: 05/23/2024]
Abstract
This study aimed to conduct a spatio-temporal analysis of tegumentary leishmaniasis occurrences in the Amazonas state, Brazil. An ecological study encompassing time series and spatial analysis was performed, exploring the geographic distribution and temporal trends of American Tegumentary Leishmaniasis (ATL) in Amazonas between 2011 and 2022. Secondary data extracted from the Department of Informatics of the Unified Health System (DATASUS) were utilized for this analysis. The study evaluated the relationship between disease cases and environmental/climatic variables (deforestation, temperature, precipitation, and relative humidity). Over the study period, 19,730 cases of tegumentary leishmaniasis were recorded, averaging an incidence of 41.4/100,000 inhabitants across the 62 municipalities of Amazonas state. Disease intensity varied with seasons. Generally, Amazonas state displayed a declining trend in ATL cases. However, certain municipalities, notably Rio Preto da Eva and Presidente Figueiredo, exhibited high incidence rates, while Canutama, Envira, Eirunepé, and Pauini municipalities demand closer attention due to their demonstrated increasing temporal trend of ATL cases. The analysis indicated a correlation between the number of ATL cases reported and relative humidity as well as precipitation. These findings underscore the significance of tegumentary leishmaniasis as a public health issue in the region and emphasize the necessity for public initiatives aimed at preventing this endemic illness.
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Affiliation(s)
| | | | - Victor Irungu Mwangi
- Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas/ Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, Amazonas, Brazil
| | | | - Jaidson Nandi Becker
- Fundação de Vigilância em Saúde do Amazonas Dra, Rosemary Costa Pinto, Manaus, Amazonas, Brazil
| | - Rejane de Castro Simões
- Fundação de Vigilância em Saúde do Amazonas Dra, Rosemary Costa Pinto, Manaus, Amazonas, Brazil
| | | | - Arineia Soares da Silva
- Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas/ Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, Amazonas, Brazil
| | - Cintia da Silva Marques
- Fundação de Vigilância em Saúde do Amazonas Dra, Rosemary Costa Pinto, Manaus, Amazonas, Brazil
| | | | - Myrna Barata Machado
- Fundação de Vigilância em Saúde do Amazonas Dra, Rosemary Costa Pinto, Manaus, Amazonas, Brazil
| | | | - Daniel Barros de Castro
- Fundação de Vigilância em Saúde do Amazonas Dra, Rosemary Costa Pinto, Manaus, Amazonas, Brazil
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14
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de Oliveira Bonfim FF, Villar LM, Croda J, Pereira JG, Guimarães ACS, da Silva SR, Maymone Gonçalves CC, Leonardo LFT, de Rezende Romeira GR, Cesar GA, Weis-Torres S, de Oliveira Landgraf de Castro V, Horta MA, Simionatto S, Motta-Castro ARC, de Paula VS. High silent prevalence of human herpesvirus 1 (HSV-1) infection affecting the indigenous reservation of the municipality of Dourados, Central-West Brazil. BMC Infect Dis 2024; 24:700. [PMID: 39020287 PMCID: PMC11253429 DOI: 10.1186/s12879-024-09497-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 06/12/2024] [Indexed: 07/19/2024] Open
Abstract
BACKGROUND The indigenous population located in the central region of Brazil, is the second largest in terms of population size in the country. The Indigenous Reserve of Dourados has risk factors that increase the vulnerability of the indigenous population to infectious diseases, especially Human alphaherpesvirus (HSV-1), a neglected disease with high prevalence in priority populations in developing countries. The virus can also cause many more severe diseases, including widespread neonatal infections, herpetic keratitis, and herpes encephalitis, which can be fatal if left untreated. We estimated the prevalence of anti-HSV-1 antibodies and correlated it with the demographic and behavioral characteristics of the Indigenous population of the Jaguapirú and Bororó villages (Dourados, Mato Grosso do Sul (MS), Brazil). METHODS Our approach was cross-sectional. From March 2017 to November 2018. Using anti-HSV-1 (Gg1) IgM and anti-HSV-1 (gG1) IgG Euroimmun and the detection and quantification of HSV-1 viral load in plasma samples, through real-time PCR. The maps were constructed using QGIS and the statistical analyses using R Studio software. RESULTS A total of 1138 individuals (> 18 years old) were enrolled. The prevalence of anti-HSV-1 IgM and IgG were 20% and 97.5%, respectively. The prevalence of anti-HSV-1 antibodies for IgG was higher in both sexes. Anti-HSV-1 IgM antibodies were present in 17.1%, 21.2%, 12.5%, and 22% of the participants with urinary problems, genital wounds, genital warts, and urethral discharge, respectively. Real-time PCR was used for confirmatory testing; HSV-1 DNA was detected in 25.6% (54/211) of anti-HSV1 IgM-positive samples. Viral loads ranged from 5.99E + 02 to 3.36E + 13. CONCLUSIONS The seroprevalence of HSV-1 IgM and detection of HSV-1 DNA in the Indigenous population confirmed high silent prevalence. Furthermore, the seroprevalence of HSV-1 in the Indigenous population was higher than that reported in the general adult Brazilian population. Various socioeconomic factors, drug use, and health and sexual behaviors could contribute to the facilitation of HSV-1 transmission in the Indigenous population. Our results may help develop culturally appropriate intervention programs that eliminate health access barriers and improve the implementation of public health policies aimed at promoting information regarding the prevention, treatment, and control of HSV-1 infection in Brazilian Indigenous populations.
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Grants
- 001 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior , Brasil
- 001 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior , Brasil
- 001 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior , Brasil
- 001 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior , Brasil
- 001 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior , Brasil
- 440245/2018-4 Conselho Nacional de Desenvolvimento Científico e Tecnológico
- 440245/2018-4 Conselho Nacional de Desenvolvimento Científico e Tecnológico
- 440245/2018-4 Conselho Nacional de Desenvolvimento Científico e Tecnológico
- 440245/2018-4 Conselho Nacional de Desenvolvimento Científico e Tecnológico
- 440245/2018-4 Conselho Nacional de Desenvolvimento Científico e Tecnológico
- 440245/2018-4 Conselho Nacional de Desenvolvimento Científico e Tecnológico
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- 041/2017 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- Fundação Oswaldo Cruz , Brasil
- Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- Secretaria do Estado de Saúde of Mato Grosso do Sul
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Affiliation(s)
| | - Livia Melo Villar
- Viral Hepatitis Laboratory, Oswaldo Cruz Foundation, Rio de Janeiro, 21040360, Brazil
| | - Julio Croda
- Department of Epidemiology of Microbial Diseases, Universidade Federal de Mato Grosso do Sul-UFMS, Campo Grande, Mato Grosso do Sul, Brazil
- Fiocruz Mato Grosso do Sul, Fundação Oswaldo Cruz, Campo Grande, Mato Grosso do Sul, Brazil
| | - Jéssica Gonçalves Pereira
- Molecular Virology and Parasitology Laboratory, Oswaldo Cruz Foundation, Rio de Janeiro, 21040360, Brazil
| | | | | | - Crhistinne Cavalheiro Maymone Gonçalves
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA
- State Department of Health of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79031350, Brazil
| | | | - Grazielli Rocha de Rezende Romeira
- Center for Biological and Health Sciences, Blood Center Sector, Federal University of Mato Grosso do Sul, Campo Grande, Grosso do Sul, 79070900, Brazil
| | - Gabriela Alves Cesar
- Center for Biological and Health Sciences, Blood Center Sector, Federal University of Mato Grosso do Sul, Campo Grande, Grosso do Sul, 79070900, Brazil
| | - Sabrina Weis-Torres
- Center for Biological and Health Sciences, Blood Center Sector, Federal University of Mato Grosso do Sul, Campo Grande, Grosso do Sul, 79070900, Brazil
| | | | - Marco Aurélio Horta
- Oswaldo Cruz Foundation, Biosafety Level 3 Facility (BSL-3), Rio de Janeiro, 21040360, Brazil
| | - Simone Simionatto
- Health Sciences Research Laboratory, Federal University of Grande Dourados (UFGD), Dourados, Mato Grosso do Sul, Brazil
| | - Ana Rita Coimbra Motta-Castro
- Center for Biological and Health Sciences, Blood Center Sector, Federal University of Mato Grosso do Sul, Campo Grande, Grosso do Sul, 79070900, Brazil
- State Department of Health of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79031350, Brazil
| | - Vanessa Salete de Paula
- Molecular Virology and Parasitology Laboratory, Oswaldo Cruz Foundation, Rio de Janeiro, 21040360, Brazil.
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15
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Sohn-Hausner N, Correa RG, Kmetiuk LB, da Silva EC, de Moraes GN, Rocha GDS, Langoni H, Biondo AW. One Health Approach to Toxoplasmosis: Owner and Dog Seropositivity as Spatial Indicators of Risk Areas for Acquired, Gestational and Congenital Transmission. Trop Med Infect Dis 2024; 9:143. [PMID: 39058185 PMCID: PMC11281673 DOI: 10.3390/tropicalmed9070143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/18/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
BACKGROUND Toxoplasmosis has been of public health concern due to direct associations with socioeconomic vulnerability and inadequate living conditions. METHODS Accordingly, the present study aimed to assess antibodies against T. gondii, historical reported toxoplasmosis cases and associated socio-environmental risk factors in Pinhais, a full urban area of Curitiba, currently the eighth biggest metropolitan area of Brazil. Anti-Toxoplasma gondii antibodies were assessed by an indirect immunofluorescence reaction (RIFI). Owner and dog samples were also tested by IFAT to anti-Leishmania spp. and anti-Trypanosoma cruzi antibodies. RESULTS Overall, 20/135 (14.8%) persons and 13/133 (9.8%) dogs from 25 different households were considered seropositive to T. gondii. All samples were seronegative to Leishmania spp. and Trypanosoma cruzi. CONCLUSIONS Although no significant covariates were found in the regression model, statistically associated risk factors in the bivariate analysis included no public water use (p = 0.016) and drinking raw milk (p = 0.041) for owners, and obesity (p = 0.028) and tick infestation (p = 0.03) for dogs. In addition, a spatial cluster of T. gondii seropositivity for both owners and their dogs overlapped the location of historic reported cases of human acquired, gestational and congenital toxoplasmosis. Finally, the results herein showed tick infestation as an indicator of socio-environmental risk for T. gondii exposure in the household environment, and dogs may be used as sentinels for human toxoplasmosis cases.
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Affiliation(s)
- Natacha Sohn-Hausner
- Graduate College of Cell and Molecular Biology, Federal University of Paraná, Curitiba 80035-050, PR, Brazil; (N.S.-H.); (L.B.K.)
| | - Ricardo Guedes Correa
- Graduate College of Veterinary Medicine, Federal University of Paraná, Curitiba 80035-050, PR, Brazil;
| | - Louise Bach Kmetiuk
- Graduate College of Cell and Molecular Biology, Federal University of Paraná, Curitiba 80035-050, PR, Brazil; (N.S.-H.); (L.B.K.)
| | - Evelyn Cristine da Silva
- Department of Veterinary Hygiene and Public Health, Sao Paulo State University, Botucatu 18618-681, SP, Brazil; (E.C.d.S.); (G.N.d.M.); (G.d.S.R.); (H.L.)
| | - Gustavo Nunes de Moraes
- Department of Veterinary Hygiene and Public Health, Sao Paulo State University, Botucatu 18618-681, SP, Brazil; (E.C.d.S.); (G.N.d.M.); (G.d.S.R.); (H.L.)
| | - Gabrielle dos Santos Rocha
- Department of Veterinary Hygiene and Public Health, Sao Paulo State University, Botucatu 18618-681, SP, Brazil; (E.C.d.S.); (G.N.d.M.); (G.d.S.R.); (H.L.)
| | - Helio Langoni
- Department of Veterinary Hygiene and Public Health, Sao Paulo State University, Botucatu 18618-681, SP, Brazil; (E.C.d.S.); (G.N.d.M.); (G.d.S.R.); (H.L.)
| | - Alexander Welker Biondo
- Graduate College of Cell and Molecular Biology, Federal University of Paraná, Curitiba 80035-050, PR, Brazil; (N.S.-H.); (L.B.K.)
- Graduate College of Veterinary Medicine, Federal University of Paraná, Curitiba 80035-050, PR, Brazil;
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Kennedy GC, O’Brien K, Nyakundi H, Kitondo M, Biwott W, Wamai RG. Visceral leishmaniasis follow-up and treatment outcomes in Tiaty East and West sub-counties, Kenya: Cure, relapse, and Post Kala-azar Dermal Leishmaniasis. PLoS One 2024; 19:e0306067. [PMID: 38917127 PMCID: PMC11198830 DOI: 10.1371/journal.pone.0306067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 06/10/2024] [Indexed: 06/27/2024] Open
Abstract
BACKGROUND Visceral Leishmaniasis (VL) is a neglected tropical disease (NTD) with the highest regional burden in East Africa. Relapse and Post Kala-azar Dermal Leishmaniasis (PKDL) contribute to the spread of VL in endemic areas, making their surveillance imperative for control and elimination. Little is known about long-term patient outcomes in Kenya through follow-up after VL treatment, despite its requirement for control and elimination by the World Health Organization (WHO) and the Kenya Ministry of Health (KMOH). METHODOLOGY/PRINCIPAL FINDINGS 36 follow-up patients in Tiaty East and West, sub-counties, Kenya, and records from 248 patients at the regional Chemolingot Sub-county Hospital (CSCH) were analyzed separately using Fisher's Exact Tests, two-sample t-tests, and Welch's t-tests in R (Version 4.3.0). The study found a prevalence rate of 88.89% (n = 32) final cure, 5.56% (n = 2) relapse, and 5.56% (n = 2) PKDL in follow-up patients and 92.74% (n = 230) initial cure, 6.86% (n = 17) relapse, and 0.80% (n = 2) PKDL in overall CSCH patients. The mean lengths of time at which follow-up patients relapsed and developed PKDL were 4.5 and 17 months, respectively. Young age (p = 0.04, 95% CI 0.63-24.31), shorter length of time from initial treatment to follow-up (p = 0.002, 95% CI 1.03-∞), lower Hb level at primary treatment (p = 0.0002, 95% CI 1.23-3.24), and living in Tiaty East sub-county (p = 0.04, 95% CI 0.00-1.43) were significantly associated (p<0.05) with VL relapse in follow-up study patients. Female sex (p = 0.04, 95% CI 0.84-∞) and living in Tiaty East sub-county (p = 0.03, 95% CI 0.00-1.43) were significantly associated with PKDL in follow-up study patients. CONCLUSIONS/SIGNIFICANCE More research should be done on PKDL in Kenya with active follow-up to understand its true burden. These results on prevalence and risk factors for PKDL and relapse in Kenya should inform knowledge of patient outcomes and interventions in the region.
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Affiliation(s)
- Grace C. Kennedy
- Department of Health Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, MA, United States of America
- African Center for Community Investment in Health, Chemolingot, Baringo County, Kenya
| | - Katherine O’Brien
- Department of Health Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, MA, United States of America
- African Center for Community Investment in Health, Chemolingot, Baringo County, Kenya
| | - Hellen Nyakundi
- African Center for Community Investment in Health, Chemolingot, Baringo County, Kenya
| | - Mwatela Kitondo
- African Center for Community Investment in Health, Chemolingot, Baringo County, Kenya
| | - Wilson Biwott
- Chemolingot Sub-County Hospital, Chemolingot, Baringo County, Kenya
| | - Richard G. Wamai
- African Center for Community Investment in Health, Chemolingot, Baringo County, Kenya
- Department of Cultures, Societies and Global Studies, College of Social Sciences and Humanities, Northeastern University, Boston, MA, United States of America
- Integrated Initiative for Global Health, Northeastern University, Boston, MA, United States of America
- Nigerian Institute of Medical Research, Lagos, Nigeria
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17
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Ofori B, Twum S, Nkansah Yeboah S, Ansah F, Amofa Nketia Sarpong K. Towards the development of cost-effective point-of-care diagnostic tools for poverty-related infectious diseases in sub-Saharan Africa. PeerJ 2024; 12:e17198. [PMID: 38915381 PMCID: PMC11195550 DOI: 10.7717/peerj.17198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 03/14/2024] [Indexed: 06/26/2024] Open
Abstract
In this review, we examine the current landscape of point-of-care testing (POCT) diagnostic tools designed for poverty-related infectious diseases (PRIDs) in sub-Saharan Africa (sSA) while delineating key avenues for future advancements. Our analysis encompasses both established and emerging diagnostic methods for PRIDs, addressing the persistent challenges in POCT tool development and deployment, such as cost, accessibility, and reliability. We emphasize recent advancements in POCT diagnostic tools as well as platforms poised to enhance diagnostic testing in sSA. Recognizing the urgency for affordable and widely accessible POCT diagnostic tools to detect PRIDs in sSA, we advocate for a multidisciplinary approach. This approach integrates current and emerging diagnostic methods, explicitly addressing challenges hindering point-of-care (POC) tool development. Furthermore, it recognizes the profound impact of misdiagnosis on public and global health, emphasizing the need for effective tools. To facilitate the successful development and implementation of POCT diagnostic tools in sSA, we propose strategies including the creation of multi-analyte detection POCT tools, the implementation of education and training programs, community engagement initiatives, fostering public-private collaborations, and the establishment of reliable supply chains. Through these concerted efforts, we aim to accelerate the development of POCT in the sSA region, ensuring its effectiveness and accessibility in addressing the diagnostic challenges associated with PRIDs.
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Affiliation(s)
- Benedict Ofori
- West African Centre for Cell Biology of Infectious Pathogens, University of Ghana, Legon, Accra, Ghana
- Department of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Accra, Ghana
| | - Seth Twum
- Department of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Accra, Ghana
| | - Silas Nkansah Yeboah
- West African Centre for Cell Biology of Infectious Pathogens, University of Ghana, Legon, Accra, Ghana
- Department of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Accra, Ghana
| | - Felix Ansah
- West African Centre for Cell Biology of Infectious Pathogens, University of Ghana, Legon, Accra, Ghana
- Department of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Accra, Ghana
| | - Kwabena Amofa Nketia Sarpong
- West African Centre for Cell Biology of Infectious Pathogens, University of Ghana, Legon, Accra, Ghana
- Department of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Accra, Ghana
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Lv S, Zhou XN. Global outreach and networking promotion to accelerate tropical diseases elimination. Infect Dis Poverty 2024; 13:47. [PMID: 38879557 PMCID: PMC11180385 DOI: 10.1186/s40249-024-01215-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2024] Open
Abstract
Cooperation and networking are powerful tools in the combating against tropical diseases. Cooperation on a global scale is essential due to the transboundary nature of tropical diseases. Networking plays a pivotal role in facilitating such cooperation. Both cooperation and networking can foster innovation in disease control programmes. Collaborative research can lead to the development of new drugs and vaccines, while shared surveillance data can enable the early detection and control of disease epidemics. Therefore, consensus of cooperation and networking has been reached during the 7th Symposium on Surveillance-Response Systems Leading to Tropical Diseases Elimination, which reflected in the two documents, i.e., Consensus for Transboundary Tropical Diseases Control, and Action Consensus of the Network of WHO Collaborating Centres Related to NTDs. These documents will improve the efforts in the fighting against tropical diseases through collective actions to achieve the United Nations' Sustainable Development Goals (SDGs).
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Affiliation(s)
- Shan Lv
- National Institute of Parasitic Diseases at Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, Shanghai, People's Republic of China
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xiao-Nong Zhou
- National Institute of Parasitic Diseases at Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, Shanghai, People's Republic of China.
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.
- Institute of One Health, Shanghai Jiao Tong University, Shanghai, People's Republic of China.
- Hainan Center for Tropical Diseases Research (Hainan Subcenter of Chinese Center for Tropical Diseases Research), Haikou, People's Republic of China.
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Islam MM, Farag E, Hassan MM, Enan KA, Mohammadi A, Aldiqs AK, Alhussain H, Al Musalmani E, Al-Zeyara AA, Al-Romaihi H, Yassine HM, Sultan AA, Bansal D, Mkhize-Kwitshana Z. Rodent-borne parasites in Qatar: A possible risk at the human-animal-ecosystem interface. One Health 2024; 18:100708. [PMID: 38496338 PMCID: PMC10944255 DOI: 10.1016/j.onehlt.2024.100708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 01/16/2024] [Accepted: 03/06/2024] [Indexed: 03/19/2024] Open
Abstract
Rodents are known reservoirs for a diverse group of zoonotic pathogens that can pose a threat to human health. Therefore, it is crucial to investigate these pathogens to institute prevention and control measures. To achieve this, the current study was conducted to investigate the frequency of different parasites in commensal rodents in Qatar. A total of 148 rodents, including Rattus norvegicus, Rattus rattus, and Mus musculus were captured using traps placed in different habitats such as agricultural and livestock farms, residential areas, and other localities. Blood, feces, ectoparasite, and visceral organs were collected for gross, microscopic, immunological, and molecular analysis. The study identified 10 different parasites, including Capillaria annulosa, Eimeria spp., Giardia spp., Hymenolepis diminuta, Mastophorus muris, Ornithonyssus bacoti, Taenia taeniaeformis, Toxoplasma gondii, Trypanosoma lewisi, and Xenopsylla astia. Overall, 62.2% of the rodents tested positive for at least one parasite species. Helminths were found to be the most prevalent parasites (46.0%), followed by ectoparasites (31.8%), and protozoa (10.1%). However, individually, X. astia was the most prevalent (31.8%), whereas C. annulosa was the least common (0.7%). The prevalence of X. astia and H. diminuta significantly differed between habitats (p < 0.05). The sequence analysis of Hymenolepis spp. was closely related to the previously reported H. diminuta in Iran, China, and Mexico. In conclusion, the study identified a diverse range of rodent-borne parasites that are important to public health, with most of them being recorded for the first time among commensal rodents in Qatar.
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Affiliation(s)
- Md Mazharul Islam
- Department of Animal Resources, Ministry of Municipality, Doha, Qatar
- School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu Natal, Durban 4000, South Africa
| | - Elmoubashar Farag
- Department of Health Protection & Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | - Mohammad Mahmudul Hassan
- Queensland Alliance for One Health Sciences, School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia
- Faculty of Veterinary Medicine, Chottogram Veterinary and Animal Sciences University, Khulshi, Chattogram 4225, Bangladesh
| | - Khalid A. Enan
- Preventive Reference Laboratory, Department of Health Protection & Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | - Ali Mohammadi
- Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran 1417613151, Iran
- National Reference Laboratory for Plague, Tularemia and Q Fever, Research Centre for Emerging and Reemerging Infection Diseases, Pasteur Institute of Iran, Akanlu, Kabudar Ahang, Hamadan 6556153145, Iran
| | | | | | | | | | - Hamad Al-Romaihi
- Department of Health Protection & Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | | | - Ali A. Sultan
- Department of Microbiology and Imunology, Weill Cornell Medicine, Cornell University, Doha, Qatar
| | - Devendra Bansal
- Department of Health Protection & Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | - Zilungile Mkhize-Kwitshana
- School of Life Sciences, College of Agriculture, Engineering & Science, University of KwaZulu Natal, Durban 4000, South Africa
- South African Medical Research Council, Cape Town 7505, South Africa
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20
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Scavuzzo CM, Campero MN, Maidana RE, Oberto MG, Periago MV, Porcasi X. Spatial patterns of intestinal parasite infections among children and adolescents in some indigenous communities in Argentina. GEOSPATIAL HEALTH 2024; 19. [PMID: 38804692 DOI: 10.4081/gh.2024.1279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 05/01/2024] [Indexed: 05/29/2024]
Abstract
Argentina has a heterogeneous prevalence of infections by intestinal parasites (IPs), with the north in the endemic area, especially for soil-transmitted helminths (STHs). We analyzed the spatial patterns of these infections in the city of Tartagal, Salta province, by an observational, correlational, and cross-sectional study in children and adolescents aged 1 to 15 years from native communities. One fecal sample per individual was collected to detect IPs using various diagnostic techniques: Telemann sedimentation, Baermann culture, and Kato-Katz. Moran's global and local indices were applied together with SaTScan to assess the spatial distribution, with a focus on cluster detection. The extreme gradient boosting (XGBoost) machine-learning model was used to predict the presence of IPs and their transmission pathways. Based on the analysis of 572 fecal samples, a prevalence of 78.3% was found. The most frequent parasite was Giardia lamblia (30.9%). High- and low-risk clusters were observed for most species, distributed in an east-west direction and polarized in two large foci, one near the city of Tartagal and the other in the km 6 community. Spatial XGBoost models were obtained based on distances with a minimum median accuracy of 0.69. Different spatial patterns reflecting the mechanisms of transmission were noted. The distribution of the majority of the parasites studied was aligned in a westerly direction close to the city, but the STH presence was higher in the km 6 community, toward the east. The purely spatial analysis provides a different and complementary overview for the detection of vulnerable hotspots and strategic intervention. Machine-learning models based on spatial variables explain a large percentage of the variability of the IPs.
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Affiliation(s)
- Carlos Matías Scavuzzo
- Human Nutrition Research Center, School of Nutrition, Faculty of Medical Sciences, National University of Córdoba, Córdoba; Mario Gulich Institute for Higher Space Studies, National University of Córdoba, National Commission of Space Activities, Falda del Cañete, Córdoba; National Council for Scientific and Technical Research, Buenos Aires; Mundo Sano Foundation, Buonos Aires.
| | - Micaela Natalia Campero
- Human Nutrition Research Center, School of Nutrition, Faculty of Medical Sciences, National University of Córdoba, Córdoba; Mario Gulich Institute for Higher Space Studies, National University of Córdoba, National Commission of Space Activities, Falda del Cañete, Córdoba; National Council for Scientific and Technical Research, Buenos Aires.
| | - Rosana Elizabeth Maidana
- Human Nutrition Research Center, School of Nutrition, Faculty of Medical Sciences, National University of Córdoba, Córdoba.
| | - María Georgina Oberto
- Human Nutrition Research Center, School of Nutrition, Faculty of Medical Sciences, National University of Córdoba, Córdoba.
| | - María Victoria Periago
- National Council for Scientific and Technical Research, Buenos Aires; Mundo Sano Foundation, Buonos Aires.
| | - Ximena Porcasi
- Mario Gulich Institute for Higher Space Studies, National University of Córdoba, National Commission of Space Activities, Falda del Cañete, Córdoba.
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21
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Leonti M. Are we romanticizing traditional knowledge? A plea for more experimental studies in ethnobiology. JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE 2024; 20:56. [PMID: 38797828 PMCID: PMC11128107 DOI: 10.1186/s13002-024-00697-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/22/2024] [Indexed: 05/29/2024]
Abstract
In answer to the debate question "Is ethnobiology romanticizing traditional practices, posing an urgent need for more experimental studies evaluating local knowledge systems?" I suggest to follow-up on field study results adopting an inclusive research agenda, and challenge descriptive data, theories, and hypotheses by means of experiments. Traditional and local knowledge are generally associated with positive societal values by ethnobiologists and, increasingly also by stakeholders. They are seen as a way for improving local livelihoods, biocultural diversity conservation and for promoting sustainable development. Therefore, it is argued that such knowledge needs to be documented, protected, conserved in situ, and investigated by hypothesis testing. Here I argue that a critical mindset is needed when assessing any kind of knowledge, whether it is modern, local, indigenous, or traditional.
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Affiliation(s)
- Marco Leonti
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, 09042, Monserrato, CA, Italy.
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22
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Antonopoulos A, Giannelli A, Morgan ER, Charlier J. Quantifying the neglected: Initial estimation of the global burden and economic impact of human toxocariasis. CURRENT RESEARCH IN PARASITOLOGY & VECTOR-BORNE DISEASES 2024; 5:100180. [PMID: 38872976 PMCID: PMC11169085 DOI: 10.1016/j.crpvbd.2024.100180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/10/2024] [Accepted: 05/20/2024] [Indexed: 06/15/2024]
Abstract
Toxocariasis is a parasitic zoonotic infection caused by Toxocara spp., ascarid nematodes of companion animals (dogs and cats) affecting people in both high-income and low/middle-income countries. Toxocariasis can manifest as several distinct syndromes. The most frequent, often termed common toxocariasis, is a self-limiting and mild febrile illness. Ocular and visceral larva migrans are severe disease manifestations affecting the eye and other internal organs, respectively, but their reported occurrence is rare. The vast majority of symptomatic cases are thought due to common toxocariasis, which has also been associated with cognitive impairment in children. Few studies to date have sought to quantity the health burden of toxocariasis in humans. In this study we provide a preliminary estimation using the Disability-Adjusted Life Year (DALY) approach. We estimate a total of 23,084 DALYs are lost annually in 28 selected countries due to common toxocariasis. Extrapolating based on a global average seroprevalence rate of 19%, we estimate 91,714 DALYs per year are lost across all countries due to toxocariasis, of which 40,912 are attributable to less severe forms, i.e. common toxocariasis, and 50,731 to cognitive impairment in children. Clinically diagnosed and reported ocular and visceral larva migrans represent a small proportion of estimated total health burden. We also found a positive correlation at national level between prevalence in cats or dogs and seroprevalence in humans, but no correlation between estimated soil contamination and seroprevalence in humans. Finally, we estimate the potential economic impact of toxocariasis in selected countries at 2.5 billion USD per annum, from costs of medical treatment and lost income. These preliminary estimates should serve as a call to action for further research and evidence-based measures to tackle toxocariasis.
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González-Montero MC, Andrés-Rodríguez J, García-Fernández N, Pérez-Pertejo Y, Reguera RM, Balaña-Fouce R, García-Estrada C. Targeting Trypanothione Metabolism in Trypanosomatids. Molecules 2024; 29:2214. [PMID: 38792079 PMCID: PMC11124245 DOI: 10.3390/molecules29102214] [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: 04/11/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Infectious diseases caused by trypanosomatids, including African trypanosomiasis (sleeping sickness), Chagas disease, and different forms of leishmaniasis, are Neglected Tropical Diseases affecting millions of people worldwide, mainly in vulnerable territories of tropical and subtropical areas. In general, current treatments against these diseases are old-fashioned, showing adverse effects and loss of efficacy due to misuse or overuse, thus leading to the emergence of resistance. For these reasons, searching for new antitrypanosomatid drugs has become an urgent necessity, and different metabolic pathways have been studied as potential drug targets against these parasites. Considering that trypanosomatids possess a unique redox pathway based on the trypanothione molecule absent in the mammalian host, the key enzymes involved in trypanothione metabolism, trypanothione reductase and trypanothione synthetase, have been studied in detail as druggable targets. In this review, we summarize some of the recent findings on the molecules inhibiting these two essential enzymes for Trypanosoma and Leishmania viability.
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Affiliation(s)
- María-Cristina González-Montero
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain; (M.-C.G.-M.); (J.A.-R.); (N.G.-F.); (Y.P.-P.); (R.M.R.)
| | - Julia Andrés-Rodríguez
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain; (M.-C.G.-M.); (J.A.-R.); (N.G.-F.); (Y.P.-P.); (R.M.R.)
| | - Nerea García-Fernández
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain; (M.-C.G.-M.); (J.A.-R.); (N.G.-F.); (Y.P.-P.); (R.M.R.)
| | - Yolanda Pérez-Pertejo
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain; (M.-C.G.-M.); (J.A.-R.); (N.G.-F.); (Y.P.-P.); (R.M.R.)
- Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Rosa M. Reguera
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain; (M.-C.G.-M.); (J.A.-R.); (N.G.-F.); (Y.P.-P.); (R.M.R.)
- Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Rafael Balaña-Fouce
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain; (M.-C.G.-M.); (J.A.-R.); (N.G.-F.); (Y.P.-P.); (R.M.R.)
- Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Carlos García-Estrada
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain; (M.-C.G.-M.); (J.A.-R.); (N.G.-F.); (Y.P.-P.); (R.M.R.)
- Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
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24
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Rodrigues A, Santos-Gomes G. Editorial: Neglected tropical diseases: tackling the challenges of a global world. FRONTIERS IN TOXICOLOGY 2024; 6:1417438. [PMID: 38745693 PMCID: PMC11091868 DOI: 10.3389/ftox.2024.1417438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 04/17/2024] [Indexed: 05/16/2024] Open
Affiliation(s)
| | - Gabriela Santos-Gomes
- Global Health and Tropical Medicine, GHTM, Associate Laboratory in Translation and Innovation Towards Global Health, LA-REAL, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL, Lisboa, Portugal
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25
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Cheng W, Huang Y, Gao H, Bold B, Zhang T, Yang D. Marine Natural Products as Novel Treatments for Parasitic Diseases. Handb Exp Pharmacol 2024. [PMID: 38554166 DOI: 10.1007/164_2024_712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2024]
Abstract
Parasitic diseases including malaria, leishmaniasis, and trypanosomiasis have received significant attention due to their severe health implications, especially in developing countries. Marine natural products from a vast and diverse range of marine organisms such as sponges, corals, molluscs, and algae have been found to produce unique bioactive compounds that exhibit promising potent properties, including antiparasitic, anti-Plasmodial, anti-Leishmanial, and anti-Trypanosomal activities, providing hope for the development of effective treatments. Furthermore, various techniques and methodologies have been used to investigate the mechanisms of these antiparasitic compounds. Continued efforts in the discovery and development of marine natural products hold significant promise for the future of novel treatments against parasitic diseases.
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Affiliation(s)
- Wenbing Cheng
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Center for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai, China
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning, Guangxi, China
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia Engineering Technology Research Center of Germplasm Resources Conservation and Utilization, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia Autonomous Region, China
| | - Yanbing Huang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Haijun Gao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Center for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai, China
- Chengdu Fifth People's Hospital (Affiliated Fifth People's Hospital of Chengdu University of Traditional Chinese Medicine/The Second Clinical Medical College), Chengdu, Sichuan, China
| | - Bolor Bold
- National Center for Zoonotic Disease, Ulaanbaatar, Mongolia
| | - Ting Zhang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Center for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai, China.
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia Engineering Technology Research Center of Germplasm Resources Conservation and Utilization, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia Autonomous Region, China.
| | - Dengfeng Yang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning, Guangxi, China
- College of Food and Quality Engineering, Nanning University, Nanning, China
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26
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Yang Z, Liu K, Wen B, Fu T, Qin X, Li R, Lu M, Wang Y, Zhang W, Shao Z, Long Y. Changes in the global epidemiological characteristics of cystic echinococcosis over the past 30 years and projections for the next decade: Findings from the Global Burden of Disease Study 2019. J Glob Health 2024; 14:04056. [PMID: 38547498 PMCID: PMC10978057 DOI: 10.7189/jogh.14.04056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024] Open
Abstract
Background Despite ongoing changes in the global epidemiology of cystic echinococcosis (CE), there is a lack of research conducted to date. Methods We extracted data on incidence and disability-adjusted life years for 204 countries and territories from 1990 to 2019 to evaluate the epidemiological characteristics and burden of CE through the Global Burden of Diseases, Injuries, and Risk Factors Study 2019. We used locally weighted linear regression to analyse the primary driving factors of the prevalence of CE at the national and regional levels and utilised a Bayesian Age-Period-Cohort model to forecast the global incidence of CE in the next decade. Results Globally, the incidence of CE remained constantly high from 1990 (2.65 per 100 000 population) to 2019 (2.60 per 100 000 population), resulting in an estimated 207 368 new cases in 2019. We observed substantial variations in the disease burden regarding its spatiotemporal distribution, population demographics, and Socio-Demographic Index levels. According to established models, factors such as health care capacity, livestock husbandry, agricultural activities, rural populations, and education levels are likely to play significant roles in determining the prevalence of CE across different countries. By 2030, the worldwide number of CE cases could reach as high as 235 628, representing an increase of 13.63% compared to 2019. Conclusions Over the past three decades, the global burden of CE has persistently remained high, especially in Central Asia, as well as North Africa and the Middle East. Efforts should focus on more effective prevention and control measures in these key regions and should specifically target vulnerable populations to prevent the escalation of epidemics.
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Affiliation(s)
- Zurong Yang
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
- Centre for Disease Prevention and Control in Northern Theater Command, Shenyang, China
| | - Kun Liu
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
| | - Bo Wen
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
- Lintong Rehabilitation and Convalescent Centre, Xi’an, China
| | - Ting Fu
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
| | - Xiaoang Qin
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
| | - Rui Li
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
| | - Mengwei Lu
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
- Department of Epidemiology, School of Public Health, Gansu University of Chinese Medicine, Lanzhou, China
| | - Yuhua Wang
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
| | - Wenkai Zhang
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
| | - Zhongjun Shao
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
| | - Yong Long
- Department of Epidemiology, School of Public Health, Air Force Medical University, Xi’an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi’an, China
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Duarte I, Rodrigues ML. Funding for research on cryptococcal disease: an analysis based on the G-finder report. IMA Fungus 2024; 15:4. [PMID: 38429837 PMCID: PMC10908028 DOI: 10.1186/s43008-023-00133-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/13/2023] [Indexed: 03/03/2024] Open
Abstract
Members of the genus Cryptococcus are the causative agents of cryptococcal meningitis, a disease mainly associated with HIV-induced immunosuppression. Patients with cryptococcal meningitis are at a serious risk of death. Most patients suffering from cryptococcosis belong to neglected populations. With reduced support for research, new therapies are unlikely to emerge. In this essay, we used the Policy Cures/G-finder platform as a reference database for funding research on cryptococcal disease. Funding for cryptococcal research started being tracked by G-finder in 2013 and has continued to appear in the annual reports ever since. In total, 15 institutions were reported as major funders for research on cryptococcal disease over the years. The US National Institutes of Health (NIH) was the main funder, followed by the UK's Wellcome Trust. The annual analysis suggested slow yearly growth in funding from 2013 to 2021. The development of new tools to prevent and fight cryptococcal disease is urgent but requires improved funding.
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Affiliation(s)
- Iraine Duarte
- Instituto Carlos Chagas, Fundação Oswaldo Cruz (Fiocruz), Rua Professor Algacyr Munhoz Mader 3775- CIC, Curitiba, PR, 81350-010, Brazil
| | - Marcio L Rodrigues
- Instituto Carlos Chagas, Fundação Oswaldo Cruz (Fiocruz), Rua Professor Algacyr Munhoz Mader 3775- CIC, Curitiba, PR, 81350-010, Brazil.
- Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro. Cidade Universitária, Centro de Ciências da Saúde., Rio de Janeiro, RJ, 21941-902, Brazil.
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Lubanga AF, Bwanali AN, Munthali LE, Mphepo M, Chumbi GD, Kangoma M, Matola Y, Kaonga B, Moyo CS. Exploring the Role of Community Involvement in Reducing the Burden of Schistosomiasis and Other Neglected Tropical Diseases in Malawi: Where are We in the Fight Against Neglected Tropical Diseases? Res Rep Trop Med 2024; 15:51-58. [PMID: 38435085 PMCID: PMC10909323 DOI: 10.2147/rrtm.s448425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 02/24/2024] [Indexed: 03/05/2024] Open
Abstract
Schistosomiasis has been endemic in Malawi since 1947. Despite the longevity of endemicity of the disease, it still maintains a high burden in Malawi. This could be attributed to insufficient coverage of preventive and therapeutic mass drug administration (MDA) which mainly targets school-aged children, leaving out adults who also bear a high burden of the disease. Additionally, despite well documented impact of community involvement in boosting up the effectiveness of health programmes, there is minimal community involvement in schistosomiasis control and prevention programmes. Therefore, this perspective seeks to discuss the historical background of schistosomiasis in Malawi, gaps in community engagement and participation and suggest ways of enhancing the role of the community in prevention and control programmes. Amongst other challenges, the control programmes are centralised, leading to minimal input at the district and community level as well as low awareness of schistosomiasis control and prevention methods at the community level. It is of utmost significance therefore to provide comprehensive schistosomiasis health education to the communities and devise a thorough outline of the specific roles and responsibilities of all stakeholders including community members in the fight against schistosomiasis and other neglected tropical diseases.
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Affiliation(s)
- Adriano Focus Lubanga
- Education and Research, Clinical Research Education and Management Services Ltd (CREAMS), Lilongwe, Malawi
- Department of Clinical Services, Kamuzu Central Hospital, Lilongwe, Malawi
| | - Akim Nelson Bwanali
- Education and Research, Clinical Research Education and Management Services Ltd (CREAMS), Lilongwe, Malawi
- Department of Clinical Services, Queen Elizabeth Central Hospital, Blantyre, Malawi
| | | | - Mzati Mphepo
- Department of Clinical Services, Queen Elizabeth Central Hospital, Blantyre, Malawi
| | | | - Melina Kangoma
- Department of Clinical Services, Kamuzu Central Hospital, Lilongwe, Malawi
| | - Yankho Matola
- Department of Clinical Services, Kamuzu Central Hospital, Lilongwe, Malawi
| | - Byenala Kaonga
- Department of Clinical Services, Kamuzu Central Hospital, Lilongwe, Malawi
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Hao Y, Tian T, Zhu Z, Chen Y, Xu J, Han S, Qian M, Zhang Y, Li S, Wang Q. Accelerating the Control and Elimination of Major Parasitic Diseases in China - On World NTD Day 2024. China CDC Wkly 2024; 6:95-99. [PMID: 38406634 PMCID: PMC10883319 DOI: 10.46234/ccdcw2024.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/01/2024] [Indexed: 02/27/2024] Open
Affiliation(s)
- Yuwan Hao
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Tian Tian
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Zelin Zhu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Yijun Chen
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Jing Xu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Shuai Han
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Menbao Qian
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Yi Zhang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
| | - Shizhu Li
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- School of Global Health, Chinese Center for Tropical Diseases Research-Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiang Wang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); Key Laboratory on Parasite and Vector Biology, Ministry of Health; WHO Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
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30
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Hagemann CL, Macedo AJ, Tasca T. Therapeutic potential of antimicrobial peptides against pathogenic protozoa. Parasitol Res 2024; 123:122. [PMID: 38311672 DOI: 10.1007/s00436-024-08133-0] [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: 09/18/2023] [Accepted: 01/18/2024] [Indexed: 02/06/2024]
Abstract
Protozoal infections cause significant morbidity and mortality in humans and animals. The use of several antiprotozoal drugs is associated with serious adverse effects and resistance development, and drugs that are more effective are urgently needed. Microorganisms, mammalian cells and fluids, insects, and reptiles are sources of antimicrobial peptides (AMPs) that act against pathogenic microorganisms; these AMPs have been widely studied as a promising alternative therapeutic option to conventional antibiotics, aiming to treat infections caused by multidrug-resistant pathogens. One advantage of AMP molecules is their adaptability, as they can be easily fine-tuned for broad-spectrum or targeted activity by changing the amino acid residues in their sequence. Consequently, these variations in structural and physicochemical properties can alter the antimicrobial activities of AMPs and decrease resistance development. This article presents an overview of peptide activities against amebiasis, giardiasis, trichomoniasis, Chagas disease, leishmaniasis, malaria, and toxoplasmosis. AMPs and their analogs demonstrate great potential as therapeutics, with potent and selective activity, when compared with commercially available drugs, and hold the potential to act as new scaffolds for the development of novel anti-protozoal drugs.
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Affiliation(s)
- Corina Lobato Hagemann
- Faculdade de Farmácia and Centro de Biotecnologia, Universidade Federal Do Rio Grande Do Sul, Avenida Ipiranga, 2752, Porto Alegre, RS, CEP 90610-000, Brazil
| | - Alexandre José Macedo
- Faculdade de Farmácia and Centro de Biotecnologia, Universidade Federal Do Rio Grande Do Sul, Avenida Ipiranga, 2752, Porto Alegre, RS, CEP 90610-000, Brazil
| | - Tiana Tasca
- Faculdade de Farmácia and Centro de Biotecnologia, Universidade Federal Do Rio Grande Do Sul, Avenida Ipiranga, 2752, Porto Alegre, RS, CEP 90610-000, Brazil.
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Ca J, Kumar P VB, Kandi V, N G, K S, Dharshini D, Batchu SVC, Bhanu P. Neglected Tropical Diseases: A Comprehensive Review. Cureus 2024; 16:e53933. [PMID: 38468991 PMCID: PMC10925483 DOI: 10.7759/cureus.53933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2024] [Indexed: 03/13/2024] Open
Abstract
Neglected tropical diseases (NTDs) are a group of diseases caused by diverse organisms, affecting millions of people in tropical and subtropical conditions. NTDs are more prevalent among people who live in poverty, without access to clean water, adequate sanitation, and quality health care. Most NTDs are chronic conditions and are potentially disablers than killers, leaving behind a trail of social consequences. Controlling NTDs has become complicated due to limited resources and are frequently ignored by global funding agencies. India experiences a significant burden of global NTDs. The paradox is that NTDs are preventable and treatable at an affordable cost. It then makes no sense as to why we co-exist with such diseases. The World Health Organization (WHO) has donned the leadership role of eliminating, eradicating, and controlling global NTDs. The WHO published a roadmap delineating a plan of action, which was being reviewed periodically. This led to substantive progress in tackling the NTDs. However, many challenges still exist to controlling and preventing NTDs. India has achieved significant progress towards NTD control and elimination by implementing the WHO strategies and action plans. This was evident by an increase in research and funding in this direction. The number of new drugs, vaccines, and investigative tools available and those in the pipeline is testimony to their efforts. Focusing singly on India's NTD problem would substantially reduce the burden of poverty-related neglected diseases and could dramatically advance the global health agenda. This review highlights the problem of NTDs in the Indian and global perspective.
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Affiliation(s)
- Jayashankar Ca
- Internal Medicine, Vydehi Institute of Medical Sciences and Research Center, Bangalore, IND
| | | | - Venkataramana Kandi
- Clinical Microbiology, Prathima Institute of Medical Sciences, Karimnagar, IND
| | - Girish N
- Microbiology, Vydehi Institute of Medical Sciences and Research Center, Bangalore, IND
| | - Sanjana K
- Dermatology, Vydehi Institute of Medical Sciences and Research Center, Bangalore, IND
| | - Divya Dharshini
- General Medicine, Vydehi Institute of Medical Sciences and Research Center, Bangalore, IND
| | | | - Prakash Bhanu
- Dermatology, Vydehi Institute of Medical Sciences and Research Center, Bangalore, IND
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32
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Chimfwembe K, Shirley H, Baker N, Wamai R. Zambia: A Narrative Review of Success and Challenges in Lymphatic Filariasis Elimination. Trop Med Infect Dis 2024; 9:21. [PMID: 38251218 PMCID: PMC10820422 DOI: 10.3390/tropicalmed9010021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 12/28/2023] [Accepted: 01/05/2024] [Indexed: 01/23/2024] Open
Abstract
The establishment of the Global Programme to Eliminate Lymphatic Filariasis (GPELF) to stop the transmission of infection has significantly reduced the incidence of lymphatic filariasis, a debilitating mosquito-borne neglected tropical disease. The primary strategies that have been employed include mass drug administration (MDA) of anthelminthics and morbidity management and disability prevention (MMDP). While some countries have been able to reach elimination status in Africa, there is still active transmission of LF in Zambia. The nematode responsible for the disease is Wuchereria bancrofti, which is transmitted by Anopheles mosquitoes. To alleviate the suffering of those infected by the disease, the Zambian Ministry of Health launched a program to eliminate LF as a public health problem in 2003. This project reviewed the efforts to achieve the elimination of LF in Zambia, past and present government policies, and the anticipated challenges. MDAs have been conducted since 2014 and coverage has been between 87% and 92%. Zambia has now moved towards pre-transmission assessment surveys (PRETAS) and transmission assessment surveys (TAS). MMDP is a major priority and planned to be conducted between 2022 and 2026. COVID-19 presented a new challenge in the control of LF, while climate change, immigration, co-infections, and funding limitations will complicate further progress.
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Affiliation(s)
- Kingford Chimfwembe
- Department of Research and Postgraduate Studies, Chreso University, Lusaka 37178, Zambia;
- Ministry of Health, Lusaka 10101, Zambia
| | - Hugh Shirley
- Program in Medical Education, Harvard Medical School, Boston, MA 02115, USA
- African Center for Community Investment in Health, Nginyang P.O. Box 48-30404, Kenya;
| | - Natalie Baker
- Program in Medical Education, Harvard Medical School, Boston, MA 02115, USA
| | - Richard Wamai
- African Center for Community Investment in Health, Nginyang P.O. Box 48-30404, Kenya;
- Integrate Initiative for Global Health, Department of Cultures, Societies and Global Studies, College of Social Sciences and Humanities, Northeastern University, Boston, MA 02115, USA
- Department of Global and Public Health, University of Nairobi, Nairobi 00100, Kenya
- Nigerian Institute of Medical Research, Federal Ministry of Health, Lagos 101212, Nigeria
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33
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Liblik K, Florica IT, Baranchuk A. Original algorithms for the detection of cardiovascular involvement of neglected tropical diseases. Expert Rev Cardiovasc Ther 2024; 22:59-74. [PMID: 38308590 DOI: 10.1080/14779072.2024.2315090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 02/02/2024] [Indexed: 02/05/2024]
Abstract
INTRODUCTION Neglected tropical diseases (NTDs) introduce considerable morbidity and mortality on a global scale, directly impacting over 1 billion individuals as well as their families and communities. Afflicted individuals may have limited access to resources and care in these regions, contributing to a high proportion of chronic, progressive, and systemic disease. The cardiovascular system is at particular risk of demise for several NTDs, yet remains largely unstudied due in part to the lack of robust data collection mechanisms in the most impacted regions. AREAS COVERED The present review is a part of the Neglected Tropical Diseases and other Infectious Diseases affecting the Heart (NET-Heart) Project, aiming at summarizing the current knowledge on cardiovascular implications of NTDs and providing diagnostic as well as management recommendations which can be tailored to low-resource settings. The diagnostic and management algorithms of 13 unique NTDs are presented and summarized. EXPERT OPINION Recognizing cardiac manifestations of NTDs can significantly alter disease trajectory and all physicians benefit from improved knowledge about NTDs. Great potential exists to advance patient care by improving data collection, communication, and international collaboration.
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Affiliation(s)
- Kiera Liblik
- Department of Medicine, Kingston Health Science Center, Queen's University, Kingston, Ontario, Canada
| | - Ioana Tereza Florica
- Department of Medicine, Kingston Health Science Center, Queen's University, Kingston, Ontario, Canada
| | - Adrian Baranchuk
- Division of Cardiology, Kingston Health Science Center, Queen's University, Kingston, Ontario, Canada
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de Oliveira LA, dos Santos Barbosa M, Leite Torres AJ, Croda MG, Oliveira da Silva B, dos Santos PCP, Rossoni R, Machado LOCL, Croda J, Maymone Gonçalves CC, Marques MF, da Silva Ferreira T, Sardi SI, Campos GS, de Almeida GB, Alves Gomes MM, Marchioro SB, Simionatto S. Seroprevalence Of SARS-COV-2 infection in asymptomatic indigenous from the largest Brazilian periurban area. PLoS One 2023; 18:e0295211. [PMID: 38134187 PMCID: PMC10745159 DOI: 10.1371/journal.pone.0295211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/15/2023] [Indexed: 12/24/2023] Open
Abstract
This study assessed the seroprevalence of SARS-CoV-2 in 496 asymptomatic individuals from Mato Grosso do Sul, located in Dourados, the largest periurban indigenous area in Brazil, from January 25 to February 4, 2021. The volunteers participated before receiving their first dose of the CoronaVac inactivated vaccine. For screening, blood samples were collected and analyzed using SARS-CoV-2 rapid tests and the enzyme-linked immunosorbent assay (ELISA). We observed varying trends in total anti-SARS-CoV-2 antibodies across different variables. Seropositivity among the participants tested was 63.70% (316/496) using the rapid test and 52.82% (262/496) were positive using the ELISA method. The majority of participants identified with the Guarani-Kaiowá ethnic group, with 66.15% (217/328), and other ethnic groups with 58.84% (193/328). The median age of the subjects was 30.5 years, with 79.57% (261/328) being femaleThis research showed the elevated seroprevalence of SARS-CoV-2 antibodies in asymptomatic Brazilians. The findings indicate a high seropositivity rate among the asymptomatic indigenous population of Midwest Brazil. This underscores the overlooked status of these communities and underscores the need for targeted national initiatives that emphasize the protection of vulnerable ethnic groups in the fight against COVID-19.
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Affiliation(s)
| | - Marcelo dos Santos Barbosa
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
| | - Alex José Leite Torres
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Mariana Garcia Croda
- School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Bruna Oliveira da Silva
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
| | | | - Regina Rossoni
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
| | | | - Julio Croda
- School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
- Oswaldo Cruz Foundation, Campo Grande, Mato Grosso do Sul, Brazil
| | - Crhistinne Cavalheiro Maymone Gonçalves
- School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
- State Secretariat of Health of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Michele Ferreira Marques
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
| | - Tiago da Silva Ferreira
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
| | - Silvia Inês Sardi
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Gubio Soares Campos
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Gabriel Barroso de Almeida
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Marilia Maria Alves Gomes
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
| | - Silvana Beutinger Marchioro
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Simone Simionatto
- Health Science Research Laboratory, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
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Ma Z, Augustijn K, De Esch I, Bossink B. Public-private partnerships influencing the initiation and duration of clinical trials for neglected tropical diseases. PLoS Negl Trop Dis 2023; 17:e0011760. [PMID: 37956165 PMCID: PMC10681307 DOI: 10.1371/journal.pntd.0011760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/27/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Public-private partnerships (PPPs) for neglected tropical diseases (NTDs) are often studied as an organizational form that facilitates the management and control of the huge costs of drug research and development. Especially the later stages of drug development, including clinical trials, become very expensive. This present study investigates whether and how the type of PPPs influences the initiation and duration of NTD clinical trials. Using the ClinicalTrials.gov database, a dataset of 1175 NTD clinical studies that started between 2000 and 2021 is analyzed based on affiliation information and project duration. For the NTD clinical trials that resulted from PPPs, the collaborating types were determined and analyzed, including the public sector-, private sector-, governmental sector-, and nongovernmental organization-led collaborations. The determinants for the discontinuation of all stopped clinical trials were categorized into scientific-, funding-, political-, and logistic dimensions. The results reveal that public sector-led PPPs were the most common collaborative types, and logistic and scientific issues were the most frequent determinants of stopped clinical trials. Trial registration: ClinicalTrials.gov.
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Affiliation(s)
- Zhongxuan Ma
- Breakthrough Tech Innovation research group, Amsterdam Institute of Molecular and Life Sciences, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Kevin Augustijn
- Department of Molecular Cell Biology and Immunology, Amsterdam Universitair Medisch Centrum, Amsterdam, The Netherlands
| | - Iwan De Esch
- Division of Medicinal Chemistry, Amsterdam Institute of Molecular and Life Sciences, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Bart Bossink
- Breakthrough Tech Innovation research group, Amsterdam Institute of Molecular and Life Sciences, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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36
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Santos ALS, Rodrigues IA, d’Avila-Levy CM, Sodré CL, Ritmeijer K, Branquinha MH. Therapeutic Strategies against Leishmania and Trypanosoma. Pathogens 2023; 12:1263. [PMID: 37887779 PMCID: PMC10610452 DOI: 10.3390/pathogens12101263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 10/19/2023] [Indexed: 10/28/2023] Open
Abstract
Human African trypanosomiasis (also known as sleeping sickness, with Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense as etiological agents), American trypanosomiasis (also known as Chagas disease, with Trypanosoma cruzi as the etiological agent), and leishmaniasis (including cutaneous, mucocutaneous, and visceral forms, with multiple species belonging to the Leishmania genus as etiological agents) are recognized as neglected tropical diseases (NTDs) [...].
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Affiliation(s)
- André L. S. Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil;
| | - Igor A. Rodrigues
- Departamento de Produtos Naturais e Alimentos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil;
| | - Claudia M. d’Avila-Levy
- Laboratório de Estudos Integrados em Protozoologia, Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Coleção de Protozoários da Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil;
| | - Cátia L. Sodré
- Departamento de Biologia Celular e Molecular (GCM), Instituto de Biologia (IB), Universidade Federal Fluminense (UFF), Niterói 24210-201, RJ, Brazil;
| | - Koert Ritmeijer
- Public Health Department, Médecins Sans Frontières, 1018 DD Amsterdam, The Netherlands;
| | - Marta H. Branquinha
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil;
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37
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Lourenço EMG, da Silva F, das Neves AR, Bonfá IS, Ferreira AMT, Menezes ACG, da Silva MEC, Dos Santos JT, Martines MAU, Perdomo RT, Toffoli-Kadri MC, G Barbosa E, Saba S, Beatriz A, Rafique J, de Arruda CCP, de Lima DP. Investigation of the Potential Targets behind the Promising and Highly Selective Antileishmanial Action of Synthetic Flavonoid Derivatives. ACS Infect Dis 2023; 9:2048-2061. [PMID: 37772925 DOI: 10.1021/acsinfecdis.3c00336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Leishmaniases are among the neglected tropical diseases that still cause devastating health, social, and economic consequences to more than 350 million people worldwide. Despite efforts to combat these vector-borne diseases, their incidence does not decrease. Meanwhile, current antileishmanial drugs are old and highly toxic, and safer presentations are unaffordable to the most severely affected human populations. In a previous study by our research group, we synthesized 17 flavonoid derivatives that demonstrated impressive inhibition capacity against rCPB2.8, rCPB3, and rH84Y. These cysteine proteases are highly expressed in the amastigote stage, the target form of the parasite. However, although these compounds have been already described in the literature, until now, the amastigote effect of any of these molecules has not been proven. In this work, we aimed to deeply analyze the antileishmanial action of this set of synthetic flavonoid derivatives by correlating their ability to inhibit cysteine proteases with the action against the parasite. Among all the synthesized flavonoid derivatives, 11 of them showed high activity against amastigotes of Leishmania amazonensis, also providing safety to mammalian host cells. Furthermore, the high production of nitric oxide by infected cells treated with the most active cysteine protease B (CPB) inhibitors confirms a potential immunomodulatory response of macrophages. Besides, considering flavonoids as multitarget drugs, we also investigated other potential antileishmanial mechanisms. The most active compounds were selected to investigate another potential biological pathway behind their antileishmanial action using flow cytometry analysis. The results confirmed an oxidative stress after 48 h of treatment. These data represent an important step toward the validation of CPB as an antileishmanial target, as well as aiding in new drug discovery studies based on this protease.
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Affiliation(s)
- Estela M G Lourenço
- Laboratório de Síntese e Transformação de Moléculas Orgânicas -SINTMOL, Instituto de Química, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, Campo Grande, 79074-460 MS, Brazil
| | - Fernanda da Silva
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, 79070-900, MS, Brazil
| | - Amarith R das Neves
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, 79070-900, MS, Brazil
| | - Iluska S Bonfá
- Laboratório de Farmacologia e Inflamação, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, 79074-460 MS, Brazil
| | - Alda Maria T Ferreira
- Laboratório de Imunologia, Biologia Molecular e Bioensaios Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, 79070-900 MS, Brazil
| | - Adriana C G Menezes
- Biotério Central, Universidade Federal de Mato Grosso do Sul, Campo Grande, 79070-900 MS, Brazil
| | - Maria E C da Silva
- Laboratório de Síntese e Transformação de Moléculas Orgânicas -SINTMOL, Instituto de Química, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, Campo Grande, 79074-460 MS, Brazil
| | - Jéssica T Dos Santos
- Laboratório de Síntese e Transformação de Moléculas Orgânicas -SINTMOL, Instituto de Química, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, Campo Grande, 79074-460 MS, Brazil
| | - Marco A U Martines
- Instituto de Química, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, Campo Grande, 79074-460 MS, Brazil
| | - Renata T Perdomo
- Laboratório de Biologia Molecular e Cultura de Células, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, 79070-900 MS, Brazil
| | - Mônica C Toffoli-Kadri
- Laboratório de Farmacologia e Inflamação, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, 79074-460 MS, Brazil
| | - Euzébio G Barbosa
- Laboratório de Química Farmacêutica Computacional, Departamento de Farmácia, Universidade Federal do Rio Grande do Norte, Natal, 59012-570, RN, Brazil
| | - Sumbal Saba
- Laboratório de Síntese Sustentável e Organocalcogênio - LabSO, Instituto de Química, Universidade Federal de Goiás-UFG, Goiânia, 74690-900 GO, Brazil
| | - Adilson Beatriz
- Laboratório de Síntese e Transformação de Moléculas Orgânicas -SINTMOL, Instituto de Química, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, Campo Grande, 79074-460 MS, Brazil
| | - Jamal Rafique
- Laboratório de Síntese e Transformação de Moléculas Orgânicas -SINTMOL, Instituto de Química, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, Campo Grande, 79074-460 MS, Brazil
- Laboratório de Síntese Sustentável e Organocalcogênio - LabSO, Instituto de Química, Universidade Federal de Goiás-UFG, Goiânia, 74690-900 GO, Brazil
| | - Carla C P de Arruda
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, 79070-900, MS, Brazil
| | - Dênis P de Lima
- Laboratório de Síntese e Transformação de Moléculas Orgânicas -SINTMOL, Instituto de Química, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, Campo Grande, 79074-460 MS, Brazil
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Rafael AF, Ferreira RA, Mota AF, Damasceno RF, Menezes ASDS, Lopes BT, de Paulo GL, Sabino EC, Ribeiro ALP, Quintino ND, Vieira TM. Overview of Chagas disease surveillance in an endemic region in Southeastern Brazil. Rev Inst Med Trop Sao Paulo 2023; 65:e51. [PMID: 37820247 PMCID: PMC10564458 DOI: 10.1590/s1678-9946202365051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 07/13/2023] [Indexed: 10/13/2023] Open
Abstract
Chagas disease (CD) is a neglected disease caused by the protozoan Trypanosoma cruzi. It has high morbidity and mortality rates and mainly affects socially vulnerable populations. This is a cross-sectional study, with retrospective and prospective data collection. Using questionnaires applied to environmental surveillance coordinators, we characterized the status of CD surveillance activities in municipalities endemic for the disease in Northern Minas Gerais State (MG) and Jequitinhonha Valley (Vale do Jequitinhonha). Moreover, we spatialized the vulnerability index for chronic CD in the study area. The population consisted of 22 environmental surveillance coordinators, active in 2020, from Northern MG and Jequitinhonha Valley, 21 municipalities included in the SaMi-Trop research project, and Montes Claros municipality. After applying the questionnaires to the coordinators, a descriptive analysis of the variables was performed. To characterize the active municipalities, the explanatory variables collected in the questionnaire were compared with the dichotomous variable. Bivariate descriptive analysis was performed. Finally, geoprocessing techniques were used to spatialize the data and prepare maps. Regarding the team of endemic combat agents (ECA), 90.9% reported the lack of a specific team for CD vector control actions. Of the 22 municipalities participating in this study, nine were active (41.1%). Only 25% (n=2) of active municipalities (9% of the municipalities studied) met the target of visiting 50% of households per year. Finally, 81.1% of the coordinators stated that in their municipality, they developed actions linked to primary health care (PHC). The implementation of CD surveillance activities weakened in the endemic region. Few municipalities have a surveillance team, with low regularity of active surveillance and noncompliance with the program's goal. The results suggest insufficient recording of activities in the information system, considering that there are municipalities that report performing the activities, but no production record was observed in the system.
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Affiliation(s)
- Aline Ferreira Rafael
- Universidade Estadual de Montes Claros, Programa de Pós-Graduação em Ciências da Saúde, Montes Claros, Minas Gerais, Brazil
| | - Raquel Aparecida Ferreira
- Fundação Oswaldo Cruz, Instituto René Rachou, Grupo de Pesquisa Triatomíneos, Belo Horizonte, Minas Gerais, Brazil
| | - Ariela Ferreira Mota
- Universidade Estadual de Montes Claros, Programa de Pós-Graduação em Ciências da Saúde, Montes Claros, Minas Gerais, Brazil
| | - Renata Fiúza Damasceno
- Universidade Estadual de Montes Claros, Programa de Pós-Graduação em Ciências da Saúde, Montes Claros, Minas Gerais, Brazil
| | | | | | - Gustavo Libério de Paulo
- Universidade Federal de Minas Gerais, Instituto de Geociências, Programa de Pós-Graduação em Análise e Modelagem de Sistemas Ambientais, Belo Horizonte, Minas Gerais, Brazil
| | - Ester Cerdeira Sabino
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical de São Paulo, São Paulo, São Paulo, Brazil
| | - Antônio Luiz Pinho Ribeiro
- Universidade Federal de Minas Gerais, Faculdade de Medicina, Hospital das Clínicas Belo Horizonte, Minas Gerais, Brazil
| | | | - Thallyta Maria Vieira
- Universidade Estadual de Montes Claros, Programa de Pós-Graduação em Ciências da Saúde, Montes Claros, Minas Gerais, Brazil
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Martínez-Conde C, Colín-Lozano B, Gutiérrez-Hernández A, Hernández-Núñez E, Yépez-Mulia L, Colorado-Pablo LF, Aguayo-Ortiz R, Escalante J, Rivera-Leyva JC, Sánchez-Carranza JN, Barbosa-Cabrera E, Navarrete-Vazquez G. Enhancing Giardicidal Activity and Aqueous Solubility through the Development of "RetroABZ", a Regioisomer of Albendazole: In Vitro, In Vivo, and In Silico Studies. Int J Mol Sci 2023; 24:14949. [PMID: 37834396 PMCID: PMC10573946 DOI: 10.3390/ijms241914949] [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: 09/18/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
Parasitic diseases, including giardiasis caused by Giardia lamblia (G. lamblia), present a considerable global health burden. The limited effectiveness and adverse effects of current treatment options underscore the necessity for novel therapeutic compounds. In this study, we employed a rational design strategy to synthesize retroalbendazole (RetroABZ), aiming to address the limitations associated with albendazole, a commonly used drug for giardiasis treatment. RetroABZ exhibited enhanced in vitro activity against G. lamblia trophozoites, demonstrating nanomolar potency (IC50 = 83 nM), outperforming albendazole (189 nM). Moreover, our in vivo murine model of giardiasis displayed a strong correlation, supporting the efficacy of RetroABZ, which exhibited an eleven-fold increase in potency compared to albendazole, with median effective dose (ED50) values of 5 µg/kg and 55 µg/kg, respectively. A notable finding was RetroABZ's significantly improved water solubility (245.74 µg/mL), representing a 23-fold increase compared to albendazole, thereby offering potential opportunities for developing derivatives that effectively target invasive parasites. The molecular docking study revealed that RetroABZ displays an interaction profile with tubulin similar to albendazole, forming hydrogen bonds with Glu198 and Cys236 of the β-tubulin. Additionally, molecular dynamics studies demonstrated that RetroABZ has a greater number of hydrophobic interactions with the binding site in the β-tubulin, due to the orientation of the propylthio substituent. Consequently, RetroABZ exhibited a higher affinity compared to albendazole. Overall, our findings underscore RetroABZ's potential as a promising therapeutic candidate not only for giardiasis but also for other parasitic diseases.
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Affiliation(s)
- Carlos Martínez-Conde
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico; (C.M.-C.); (B.C.-L.); (A.G.-H.); (J.C.R.-L.); (J.N.S.-C.)
| | - Blanca Colín-Lozano
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico; (C.M.-C.); (B.C.-L.); (A.G.-H.); (J.C.R.-L.); (J.N.S.-C.)
| | - Abraham Gutiérrez-Hernández
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico; (C.M.-C.); (B.C.-L.); (A.G.-H.); (J.C.R.-L.); (J.N.S.-C.)
| | - Emanuel Hernández-Núñez
- Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados, IPN, Unidad Mérida, Merida 97310, Yucatán, Mexico;
| | - Lilián Yépez-Mulia
- Unidad de Investigación Medica en Enfermedades Infecciosas y Parasitarias, Unidad Médica de Alta Especialidad-Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico;
| | - Luis Fernando Colorado-Pablo
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de Mexico, Mexico City 04510, Mexico; (L.F.C.-P.); (R.A.-O.)
| | - Rodrigo Aguayo-Ortiz
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de Mexico, Mexico City 04510, Mexico; (L.F.C.-P.); (R.A.-O.)
| | - Jaime Escalante
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca 62209, Morelos, Mexico;
| | - Julio C. Rivera-Leyva
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico; (C.M.-C.); (B.C.-L.); (A.G.-H.); (J.C.R.-L.); (J.N.S.-C.)
| | - Jessica Nayelli Sánchez-Carranza
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico; (C.M.-C.); (B.C.-L.); (A.G.-H.); (J.C.R.-L.); (J.N.S.-C.)
| | - Elizabeth Barbosa-Cabrera
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, IPN, Mexico City 11340, Mexico;
| | - Gabriel Navarrete-Vazquez
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico; (C.M.-C.); (B.C.-L.); (A.G.-H.); (J.C.R.-L.); (J.N.S.-C.)
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Das NC, Chakraborty P, Nandy S, Dey A, Malik T, Mukherjee S. Programmed cell death pathways as targets for developing antifilarial drugs: Lessons from the recent findings. J Cell Mol Med 2023; 27:2819-2840. [PMID: 37605891 PMCID: PMC10538269 DOI: 10.1111/jcmm.17913] [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: 03/15/2023] [Revised: 07/17/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023] Open
Abstract
More than half a century has passed since the introduction of the National Filariasis Control Program; however, as of 2023, lymphatic filariasis (LF) still prevails globally, particularly in the tropical and subtropical regions, posing a substantial challenge to the objective of worldwide elimination. LF is affecting human beings and its economically important livestock leading to a crucial contributor to morbidities and disabilities. The current scenario has been blowing up alarms of attention to develop potent therapeutics and strategies having efficiency against the adult stage of filarial nematodes. In this context, the exploration of a suitable drug target that ensures lethality to macro and microfilariae is now our first goal to achieve. Apoptosis has been the potential target across all three stages of filarial nematodes viz. oocytes, microfilariae (mf) and adults resulting in filarial death after receiving the signal from the reactive oxygen species (ROS) and executed through intrinsic and extrinsic pathways. Hence, it is considered a leading target for developing antifilarial drugs. Herein, we have shown the efficacy of several natural and synthetic compounds/nanoformulations in triggering the apoptotic death of filarial parasites with little or no toxicity to the host body system.
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Affiliation(s)
- Nabarun Chandra Das
- Integrative Biochemistry & Immunology Laboratory, Department of Animal ScienceKazi Nazrul UniversityAsansolIndia
| | - Pritha Chakraborty
- Integrative Biochemistry & Immunology Laboratory, Department of Animal ScienceKazi Nazrul UniversityAsansolIndia
| | - Samapika Nandy
- Department of Life SciencePresidency UniversityKolkataIndia
- School of PharmacyGraphic Era Hill UniversityDehradunIndia
| | - Abhijit Dey
- Department of Life SciencePresidency UniversityKolkataIndia
| | | | - Suprabhat Mukherjee
- Integrative Biochemistry & Immunology Laboratory, Department of Animal ScienceKazi Nazrul UniversityAsansolIndia
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Dos Santos ALS. Tropical Infectious Diseases of Global Significance: Insights and Perspectives. Trop Med Infect Dis 2023; 8:462. [PMID: 37888590 PMCID: PMC10611159 DOI: 10.3390/tropicalmed8100462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/28/2023] Open
Abstract
Neglected tropical diseases (NTDs) are indeed a group of illnesses (Table 1) affecting hundreds of millions of individuals living in tropical and sub-tropical geographical regions of the globe, particularly in socioeconomic vulnerability areas where access to adequate sanitation, a clean water supply, and healthcare is limited [...].
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Affiliation(s)
- André Luis Souza Dos Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
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M. Jaber H, Abusamak M, N.Obeid S, Heissat N, Qashou R, AB Shtaiyat M, Alasad I, Aldaghlise D. Prevalence of Persisting and New Symptoms Following Recovery from COVID-19 in the Jordanian Population. Med J Islam Repub Iran 2023; 37:105. [PMID: 38021384 PMCID: PMC10657256 DOI: 10.47176/mjiri.37.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Indexed: 12/01/2023] Open
Abstract
Background Many patients do not have a clear idea about the recovery from COVID-19 infection. This study focuses on the prevalence of persistent symptoms of COVID-19 infection as well as new symptoms that appear after recovery, and it aids in determining the relationships between these symptoms and a variety of variables. Methods An online observational study was conducted between April and June 2022. It consisted of a self-administered web-based questionnaire conducted using social media platforms. Inclusion criteria were residency in Jordan, being 18 years of age or older, having recovered from COVID-19 for at least 90 days, and giving consent to participate. Participants whose infection was not confirmed by a positive PCR were excluded. Results The most common persistent symptoms were loss of smell (34.7%), fatigue (34.6%), loss of taste (29.5%), myalgia (26.3%), and headache (25.9%), while the most common newly appearing symptoms after recovery were smell hallucinations (15.8%), fatigue (15.5%), taste hallucinations (14.9%), and focus impairment (12.9%) and smell impairment (12.8%). The symptoms persisted more in females, non-smokers, and those who needed medical care sor oxygesnation and with increased infection duration. Conclusion The study about persistent and new symptoms after COVID-19 among Jordanians found a greater prevalence of symptoms related to the sense of smell. There is no association between persistent and new symptoms after COVID-19 recovery with comorbidities or oxygen therapy during illness. We recommend studying the effect of COVID-19 mutants and vaccination on the persistence of symptoms after recovery.
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Affiliation(s)
- Hatim M. Jaber
- Department of Community Medicine, School of Medicine, Al-Balqa Applied
University, As-Salt, Jordan
| | - Mohammad Abusamak
- Department of General and Special Surgery, Division of Ophthalmology, Faculty of
Medicine, Al Balqa Applied University, Salt, Jordan
| | | | - Nizar Heissat
- Anesthesia and Intensive Care Unit, Islamic Hospital, Amman, Jordan
| | - Razan Qashou
- Faculty of Medicine, Al-Balqa Applied University, Jordan
| | | | - Ibrahim Alasad
- Faculty of Medicine, Al-Balqa Applied University, Jordan
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Tharmalingam J, Brehm K, Kundu S, Młocicki D, Paredes R. Editorial: Host-pathogen interaction in cestodes infection. Front Cell Infect Microbiol 2023; 13:1283267. [PMID: 37767200 PMCID: PMC10520694 DOI: 10.3389/fcimb.2023.1283267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 08/30/2023] [Indexed: 09/29/2023] Open
Affiliation(s)
- Jayaraman Tharmalingam
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, United States
| | - Klaus Brehm
- Institute of Hygiene and Microbiology, Julius-Maximilians-University of Würzburg, Würzburg, Germany
| | - Suman Kundu
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center (UTHSC), Memphis, TN, United States
| | - Daniel Młocicki
- Department of General Biology and Parasitology, Medical University of Warsaw, Warsaw, Poland
| | - Rodolfo Paredes
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
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Tan H, Feng X, Yang P. Association between uveitis onset and economic development in mainland China. BMC Public Health 2023; 23:1711. [PMID: 37667273 PMCID: PMC10476315 DOI: 10.1186/s12889-023-16591-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 08/23/2023] [Indexed: 09/06/2023] Open
Abstract
BACKGROUND Economic prosperity has fostered numerous changes that may translate into better or worse outcomes across all domains of health. This study aims to explore the associations of economic development with uveitis onset in mainland China. METHODS We used Poisson regression with generalized estimated equations to quantify the associations of per capita gross domestic product (GDP) with uveitis onset in 31 provinces of mainland China from 2006 to 2017. We further estimated the effects mediated by economic growth on the temperature-uveitis and PM2.5-uveitis associations established in our previous studies. RESULTS A total of 12,721 uveitis patients from 31 provinces of mainland China were studied. Overall, every 10,000 Chinese yuan ($ 1491.278, 2006-2017) increase in per capita GDP, with no weighted value or weighted by population, corresponded to 1.85% (95% confidence interval, 1.19-2.52%) and 1.43% (95% confidence interval, 0.37-2.51%) lnRR decrease in the uveitis onsets. Stratified analysis showed this negative association between per capita GDP and uveitis onset, only existed in male patients (P < .001), individuals aged 20-50 years (P < 0 .05), non-infectious uveitis, uveitis with systemic disease, and Bechet's disease (all P < 0 .05). Moreover, the increased per capita GDP, if above the national level, could reinforce both temperature-uveitis and PM2.5-uveitis association (both P < 0.001). CONCLUSIONS The findings suggest that economic development is negatively associated with uveitis onset. However, it may facilitate the uveitis onset mediated by both increased temperature and PM2.5 exposure if the per capita GDP is above national level.
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Affiliation(s)
- Handan Tan
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Lab of Ophthalmology, Chongqing Eye Institute, Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, People's Republic of China
| | - Xiaojie Feng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Lab of Ophthalmology, Chongqing Eye Institute, Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, People's Republic of China
| | - Peizeng Yang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Lab of Ophthalmology, Chongqing Eye Institute, Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, People's Republic of China.
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Ulasi II, Burdmann EA, Ijoma CK, Chou LF, Yang CW. Neglected and Emerging Infections of The Kidney. Semin Nephrol 2023; 43:151472. [PMID: 38216373 DOI: 10.1016/j.semnephrol.2023.151472] [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] [Indexed: 01/14/2024]
Abstract
Individuals, societies, and the environment are affected by neglected and emerging diseases. These diseases result in a variety of severe outcomes, including permanent disabilities, chronic diseases such as chronic kidney disease, and even mortality. Consequences include high health care expenditures, loss of means of support, social stigma, and social exclusion. The burden of these diseases is exacerbated in low- and middle-income countries owing to poverty, inadequate fundamental infrastructure, and the absence of health and social protection systems. The World Health Organization is committed to promoting the following public health strategies to prevent and control neglected tropical diseases: preventive chemotherapy; intensive case management; vector control; provision of safe drinkable water, sanitation, and hygiene; and veterinary public health. In addition, it promotes a One Health strategy, which is a collaborative, multisectoral, and interdisciplinary approach to achieving the greatest health outcomes by recognizing the interdependence of human beings, animals, plants, and their shared environment. This article provides knowledge and strategies for the prevention and treatment of neglected and emerging diseases, with a particular concentration on kidney diseases, as part of a comprehensive approach to One Health.
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Affiliation(s)
- Ifeoma I Ulasi
- Renal Unit, Department of Medicine, College of Medicine, University of Nigeria-University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria; Renal Unit, Department of Internal Medicine, Alex Ekwueme Federal University Teaching Hospital, Abakaliki, Nigeria
| | - Emmanuel A Burdmann
- Laboratório de Investigação Médica (LIM 12), Faculdade de Medicina da Universidade de So Paulo, So Paulo, Brazil
| | - Chinwuba K Ijoma
- Renal Unit, Department of Medicine, College of Medicine, University of Nigeria-University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria
| | - Li-Fang Chou
- Kidney Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chih-Wei Yang
- Kidney Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan; Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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dos Santos FS, de Freitas RP, de Freitas CS, Mendonça DVC, Lage DP, Tavares GDSV, Machado AS, Martins VT, Costa AV, de Queiroz VT, de Oliveira MB, de Oliveira FM, Antinarelli LMR, Coimbra ES, Pilau EJ, da Silva GP, Coelho EAF, Teixeira RR. Synthesis of 1,2,3-Triazole-Containing Methoxylated Cinnamides and Their Antileishmanial Activity against the Leishmania braziliensis Species. Pharmaceuticals (Basel) 2023; 16:1113. [PMID: 37631028 PMCID: PMC10459042 DOI: 10.3390/ph16081113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Leishmaniasis is a group of infectious diseases caused by protozoan parasites that belong to the genus Leishmania. Currently, there is no human vaccine, and the available treatments are associated with toxicity, high cost, and the emergence of resistant strains. These factors highlight the need to identify new antileishmanial candidates. In this study, we synthesized twenty-four methoxylated cinnamides containing 1,2,3-triazole fragments and evaluated their antileishmanial activity against the Leishmania braziliensis species, which is the main etiological agent responsible for American Tegumentary Leishmaniasis (ATL). The cinnamides were synthetically prepared using nucleophilic acyl substitution and copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reactions. The compounds were characterized using infrared, nuclear magnetic resonance, and high-resolution mass spectrometry techniques. We performed preliminary studies to evaluate the biological activity of these compounds against L. braziliensis promastigotes and axenic amastigotes. Compound 28, N-((1-(7-(diethylamino)-2-oxo-2H-chromen-3-yl)-1H-1,2,3-triazole-4-yl) methyl)-3,4-dimethoxy cinnamide, demonstrated relevant antileishmanial activity with low toxicity in murine cells. The selectivity index values for this compound were superior compared with data obtained using amphotericin B. Furthermore, this cinnamide derivative reduced the infection percentage and number of recovered amastigotes in L. braziliensis-infected macrophages. It also induced an increase in reactive oxygen species production, depolarization of the mitochondrial potential, and disruption of the parasite membrane. Taken together, these findings suggest that this synthetic compound holds potential as an antileishmanial candidate and should be considered for future studies in the treatment of ATL.
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Affiliation(s)
- Fabíola Suelen dos Santos
- Laboratório de Síntese Orgânica (LABSINTO), Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (F.S.d.S.); (R.P.d.F.)
| | - Rossimiriam Pereira de Freitas
- Laboratório de Síntese Orgânica (LABSINTO), Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (F.S.d.S.); (R.P.d.F.)
| | - Camila Simões de Freitas
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (C.S.d.F.); (D.V.C.M.); (D.P.L.); (G.d.S.V.T.); (A.S.M.); (V.T.M.); (E.A.F.C.)
| | - Débora Vasconcelos Costa Mendonça
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (C.S.d.F.); (D.V.C.M.); (D.P.L.); (G.d.S.V.T.); (A.S.M.); (V.T.M.); (E.A.F.C.)
| | - Daniela Pagliara Lage
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (C.S.d.F.); (D.V.C.M.); (D.P.L.); (G.d.S.V.T.); (A.S.M.); (V.T.M.); (E.A.F.C.)
| | - Grasiele de Sousa Vieira Tavares
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (C.S.d.F.); (D.V.C.M.); (D.P.L.); (G.d.S.V.T.); (A.S.M.); (V.T.M.); (E.A.F.C.)
| | - Amanda Sanchez Machado
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (C.S.d.F.); (D.V.C.M.); (D.P.L.); (G.d.S.V.T.); (A.S.M.); (V.T.M.); (E.A.F.C.)
| | - Vivian Tamieti Martins
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (C.S.d.F.); (D.V.C.M.); (D.P.L.); (G.d.S.V.T.); (A.S.M.); (V.T.M.); (E.A.F.C.)
| | - Adilson Vidal Costa
- Grupo de Estudo Aplicado em Produtos Naturais e Síntese Orgânica (GEAPS), Departamento de Química e Física, Universidade Federal do Espírito Santo, Alegre 29500-000, Espírito Santo, Brazil; (A.V.C.); (V.T.d.Q.); (M.B.d.O.)
| | - Vagner Tebaldi de Queiroz
- Grupo de Estudo Aplicado em Produtos Naturais e Síntese Orgânica (GEAPS), Departamento de Química e Física, Universidade Federal do Espírito Santo, Alegre 29500-000, Espírito Santo, Brazil; (A.V.C.); (V.T.d.Q.); (M.B.d.O.)
| | - Mariana Belizario de Oliveira
- Grupo de Estudo Aplicado em Produtos Naturais e Síntese Orgânica (GEAPS), Departamento de Química e Física, Universidade Federal do Espírito Santo, Alegre 29500-000, Espírito Santo, Brazil; (A.V.C.); (V.T.d.Q.); (M.B.d.O.)
| | | | - Luciana Maria Ribeiro Antinarelli
- Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora 36036-900, Minas Gerais, Brazil; (L.M.R.A.); (E.S.C.)
| | - Elaine Soares Coimbra
- Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora 36036-900, Minas Gerais, Brazil; (L.M.R.A.); (E.S.C.)
| | - Eduardo Jorge Pilau
- Centro de Ciências Exatas, Departamento de Química, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil; (E.J.P.); (G.P.d.S.)
| | - Geovane Perez da Silva
- Centro de Ciências Exatas, Departamento de Química, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil; (E.J.P.); (G.P.d.S.)
| | - Eduardo Antonio Ferraz Coelho
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; (C.S.d.F.); (D.V.C.M.); (D.P.L.); (G.d.S.V.T.); (A.S.M.); (V.T.M.); (E.A.F.C.)
| | - Róbson Ricardo Teixeira
- Grupo de Síntese e Pesquisa de Compostos Bioativos (GSPCB), Departamento de Química, Universidade Federal de Viçosa, Viçosa 36570-900, Minas Gerais, Brazil
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Gbogbo S, Amu H, Dowou RK, Ayanore MA. Management of onchocerciasis among adolescents in nkwanta north district of Ghana: Qualitative study of adolescents' perception, community and health system support. PLoS Negl Trop Dis 2023; 17:e0011577. [PMID: 37643153 PMCID: PMC10464985 DOI: 10.1371/journal.pntd.0011577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 08/07/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND Onchocerciasis affects the quality of life to a greater extent among affected individuals. The World Health Organization (WHO)'s Onchocerciasis Control Program (OCP) has effectively reduced the prevalence of onchocerciasis by interrupting the transmission of the parasite and by mass population treatment in the regions at risk of the disease. Despite the successful reduction of the prevalence of onchocerciasis by WHO, the socioeconomic burden resulting from the disabilities caused by onchocerciasis are still immense. This study sought to explore the adolescents' perception regarding the management of onchocerciasis, community and health system support in Nkwanta North District of Ghana. METHOD This study adopted a qualitative phenomenological design and exploratory, descriptive qualitative approach. An in-depth interview guide was developed to collect data for the study. One-on-one interview was conducted. Data collected from 16 onchocerciasis adolescent patients were analysed thematically using ATLAS.ti v7.5.7. Quotes from the participants were presented verbatim to substantiate the themes realised. RESULTS Most of the 12 participants (75.0%) were aged 15-18 years old. It was noted that 6(37.50%) of participants were in Junior High School (JHS), while 4(25.0%) were in Senior High School (SHS). It was noted that community members have diverse understandings and perceptions of onchocerciasis, including beliefs that Onchocerciasis is a serious disease that can cause blindness; it is caused by the consumption of some types of food products or stressful work. Adolescents believed that onchocerciasis was caused by insect bite blood infection, poor environmental hygiene, sun or could have been inherited from parents. Ivermectin treatment was noted by adolescents to have helped relieve the symptoms of ochocerciasis they were experiencing. However, the adolescents indicated that they had experienced some side effects, including fever, headache, body itching, rushes, swollen body and blurred vision from the drug. CONCLUSION Inadequate education and communication about onchocerciasis resulted in diverse and erroneous meanings of onchocerciasis among community members. Our research recognises that community and health system supports is very important in the effective management of Onchocerciasis, contributing to the attainment of Sustainable Development Goal (SDG) 3.3, which is targeted at ending the epidemic of NTDs like onchocerciasis by 2030.
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Affiliation(s)
- Sitsofe Gbogbo
- Department of Population and Behavioural Sciences, School of Public Health, University of Health and Allied Science, Hohoe, Ghana
| | - Hubert Amu
- Department of Population and Behavioural Sciences, School of Public Health, University of Health and Allied Science, Hohoe, Ghana
| | - Robert Kokou Dowou
- Department of Epidemiology and Biostatistics, School of Public Health, University of Health and Allied Science, Hohoe, Ghana
| | - Martin Amogre Ayanore
- Health Policy Planning and Management, University of Health and Allied Science, Hohoe, Ghana
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De Fuentes-Vicente JA, Santos-Hernández NG, Ruiz-Castillejos C, Espinoza-Medinilla EE, Flores-Villegas AL, de Alba-Alvarado M, Cabrera-Bravo M, Moreno-Rodríguez A, Vidal-López DG. What Do You Need to Know before Studying Chagas Disease? A Beginner's Guide. Trop Med Infect Dis 2023; 8:360. [PMID: 37505656 PMCID: PMC10383928 DOI: 10.3390/tropicalmed8070360] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
Chagas disease is one of the most important tropical infections in the world and mainly affects poor people. The causative agent is the hemoflagellate protozoan Trypanosoma cruzi, which circulates among insect vectors and mammals throughout the Americas. A large body of research on Chagas disease has shown the complexity of this zoonosis, and controlling it remains a challenge for public health systems. Although knowledge of Chagas disease has advanced greatly, there are still many gaps, and it is necessary to continue generating basic and applied research to create more effective control strategies. The aim of this review is to provide up-to-date information on the components of Chagas disease and highlight current trends in research. We hope that this review will be a starting point for beginners and facilitate the search for more specific information.
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Affiliation(s)
- José A De Fuentes-Vicente
- Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas, Tuxtla Gutiérrez 29039, Mexico
| | - Nancy G Santos-Hernández
- Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas, Tuxtla Gutiérrez 29039, Mexico
| | - Christian Ruiz-Castillejos
- Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas, Tuxtla Gutiérrez 29039, Mexico
| | | | - A Laura Flores-Villegas
- Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | | | - Margarita Cabrera-Bravo
- Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Adriana Moreno-Rodríguez
- Facultad de Ciencias Químicas, Universidad Autónoma Benito Juárez de Oaxaca, Oaxaca 68120, Mexico
| | - Dolores G Vidal-López
- Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas, Tuxtla Gutiérrez 29039, Mexico
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Li Y, He T, Xie J, Lv S, Li Z, Yuan M, Hu F, Lin D. Trend of Human Schistosomiasis Japonica Prevalence in China from 1990 to 2019. Trop Med Infect Dis 2023; 8:344. [PMID: 37505640 PMCID: PMC10385504 DOI: 10.3390/tropicalmed8070344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/25/2023] [Accepted: 06/27/2023] [Indexed: 07/29/2023] Open
Abstract
Schistosomiasis (Schistosomiasis japonica) remains an important public health problem in China, and the Chinese government has set an ambitious goal of eliminating schistosomiasis by 2030. Based on the observational study of the Global Burden of Disease Study database in 2019 (GBD2019) and the World Bank database, this study aimed to analyze the prevalence trend of schistosomiasis in China from 1990 to 2019 by using the joinpoint regression model, and the relationship between economic and social development and schistosomiasis prevalence. The data of age-standardized infection rates (ASRs) from the Global Burden of Disease Study Global Health Data Exchange were collected, and Gross national product per capita (GDP) and people using safely managed sanitation services ((PPMS) % of population) were extracted from the World Bank database. Trends of ASR were analyzed using joinpoint regression analysis, the association of ASR with GDP, and PPMS using the Pearson correlation analysis. The results reveal that, from 1990 to 2019, the overall trend of ASR from schistosomiasis showed a decrease for both sexes, the decreases in men were relatively smaller compared with women. A larger decrease has been observed in the age groups from 15 to 49 years compared with other age groups. The ASR of schistosomiasis had a significant negative correlation with GDP and PPMS. This observational study identified decreasing prevalence rate of schistosomiasis in China since 1990. Continuous investment, optimization of control strategy, and economic development will help to achieve the goal of schistosomiasis elimination.
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Affiliation(s)
- Yifeng Li
- Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330096, China
- Jiangxi Province Key Laboratory of Schistosomiasis Prevention and Control, Nanchang 330096, China
| | - Tingting He
- Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330096, China
| | - Jingzi Xie
- Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330096, China
| | - Shangbiao Lv
- Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330096, China
- Jiangxi Province Key Laboratory of Schistosomiasis Prevention and Control, Nanchang 330096, China
| | - Zongguang Li
- Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330096, China
| | - Min Yuan
- Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330096, China
- Jiangxi Province Key Laboratory of Schistosomiasis Prevention and Control, Nanchang 330096, China
| | - Fei Hu
- Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330096, China
- Jiangxi Province Key Laboratory of Schistosomiasis Prevention and Control, Nanchang 330096, China
| | - Dandan Lin
- Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330096, China
- Jiangxi Province Key Laboratory of Schistosomiasis Prevention and Control, Nanchang 330096, China
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50
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Fajloun F, Ganlonon L, Gnimavo RS, Sodjinou E, Habib A, Claco E, Agoundoté I, Adeye A, Catraye P, Al-Bayssari C, Moussa EH, Robbe-Saule M, Houezo JG, Kpoton GG, Ayélo AG, Gomez B, Johnson RC, Marsollier L, Marion E, Kempf M. An Overview of 10 Years of Activity of a Molecular Laboratory for Buruli Ulcer Diagnosis at a Field Hospital in Benin. J Clin Microbiol 2023; 61:e0027423. [PMID: 37212702 PMCID: PMC10281091 DOI: 10.1128/jcm.00274-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 04/26/2023] [Indexed: 05/23/2023] Open
Abstract
Buruli ulcer (BU) is a neglected tropical disease caused by Mycobacterium ulcerans. Early diagnosis is crucial to prevent morbidity. In November 2012, a field laboratory fully equipped for the rapid on-site quantitative PCR (qPCR) diagnosis of M. ulcerans was established at the Buruli ulcer treatment center (CDTLUB) center in Pobè Benin, a region where BU is endemic. We describe its first 10 years of activity and its gradual evolution into an expert laboratory for BU diagnosis. From 2012 to 2022, the laboratory analyzed 3,018 samples from patients attending consultations for suspected BU at the CDTLUB in Pobè. Ziehl-Neelsen staining and qPCR targeting the IS2404 sequence were performed. Since 2019, the laboratory has also received and analyzed 570 samples from other centers. The laboratory confirmed the diagnosis of BU by qPCR for 39.7% samples: M. ulcerans DNA was detected in 34.7% of swabs, 47.2% of all fine needle aspiration samples (FNA) and 44.6% of all skin biopsy specimens. Positive Ziehl-Neelsen staining results were obtained for 19.0% samples. Bacterial load, estimated by qPCR, was significantly greater for the Ziehl-Neelsen-positive samples than for Ziehl-Neelsen-negative samples, and detection rates were highest for FNA samples. Overall, 26.3% of the samples received from other centers were positive for BU. Most of these samples were sent by the CDTLUBs of Lalo, Allada, and Zagnanado, Benin. The establishment of the laboratory in the CDTLUB of Pobè has been a huge success. Optimal patient care depends on the close proximity of a molecular biology structure to BU treatment centers. Finally, FNA should be promoted among caregivers. IMPORTANCE Here, we describe the first 10 years of activity at a field laboratory established at the Buruli ulcer treatment center (CDTLUB) in Pobè, Benin, a country in which Mycobacterium ulcerans is endemic. Between 2012 and 2022, the laboratory analyzed 3,018 samples from patients consulting the CDTLUB of Pobè with a suspected clinical BU. Ziehl-Neelsen staining and qPCR targeting the IS2404 sequence were performed. In total, 39.7% of samples tested positive by qPCR and 19.0% tested positive by Ziehl-Neelsen staining. Detection rates were highest for FNA samples, and the bacterial loads estimated by qPCR were significantly higher for Ziehl-Neelsen-positive samples than for Ziehl-Neelsen-negative samples. Since 2019, the laboratory has also analyzed 570 samples received from outside the CDTLUB of Pobè, 26.3% of which were positive for BU. Most of these samples were sent by the CDTLUBs of Lalo, Allada, and Zagnanado in Benin. The establishment of the laboratory in the CDTLUB of Pobè has been a huge success, with major benefits for both the medical staff and patients. Our findings illustrate that the usefulness and feasibility of having a diagnostic center in rural Africa, where the disease is endemic, is a key part of optimal patient care, and that FNA should be promoted to increase detection rates.
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Affiliation(s)
- Faraj Fajloun
- Universitaire Angers, Nantes Université, CHU Angers, Inserm, INCIT, Angers, France
- Ecole Doctorale en Sciences et Technologie, Université Libanaise, Hadath, Lebanon
- Laboratoire d’Innovation Thérapeutique, Faculté de Sciences 2, Fanar, Lebanon
| | - Line Ganlonon
- Centre de Dépistage et de Traitement de l’Ulcère de Buruli, Fondation Raoul Follereau, Pobè, Benin
| | - Ronald Sètondji Gnimavo
- Centre de Dépistage et de Traitement de l’Ulcère de Buruli, Fondation Raoul Follereau, Pobè, Benin
- Institut Régional de Santé Publique – Comlan Alfred Quenum, Université d'Abomey Calavi, Ouidah, Bénin
| | - Espoir Sodjinou
- Centre de Dépistage et de Traitement de l’Ulcère de Buruli, Fondation Raoul Follereau, Pobè, Benin
| | - Akimath Habib
- Centre de Dépistage et de Traitement de l’Ulcère de Buruli, Fondation Raoul Follereau, Pobè, Benin
| | - Eric Claco
- Centre de Dépistage et de Traitement de l’Ulcère de Buruli, Fondation Raoul Follereau, Pobè, Benin
| | - Irvine Agoundoté
- Centre de Dépistage et de Traitement de l’Ulcère de Buruli, Fondation Raoul Follereau, Pobè, Benin
| | - Ambroise Adeye
- Centre de Dépistage et de Traitement de l’Ulcère de Buruli, Fondation Raoul Follereau, Pobè, Benin
| | - Perrin Catraye
- Centre de Dépistage et de Traitement de l’Ulcère de Buruli, Fondation Raoul Follereau, Pobè, Benin
| | - Charbel Al-Bayssari
- Department of Medical Laboratory Sciences, Faculty of Health Sciences, University of Balamand, Tripoli, Lebanon
| | - Elie Hajj Moussa
- Laboratoire d’Innovation Thérapeutique, Faculté de Sciences 2, Fanar, Lebanon
| | - Marie Robbe-Saule
- Universitaire Angers, Nantes Université, CHU Angers, Inserm, INCIT, Angers, France
| | - Jean Gabin Houezo
- Programme National de Lutte contre L’Ulcère de Buruli et la Lèpre, Cotonou, Benin
| | - Godwin Gérard Kpoton
- Programme National de Lutte contre L’Ulcère de Buruli et la Lèpre, Cotonou, Benin
| | | | | | | | - Laurent Marsollier
- Universitaire Angers, Nantes Université, CHU Angers, Inserm, INCIT, Angers, France
| | - Estelle Marion
- Universitaire Angers, Nantes Université, CHU Angers, Inserm, INCIT, Angers, France
| | - Marie Kempf
- Universitaire Angers, Nantes Université, CHU Angers, Inserm, INCIT, Angers, France
- Département de Biologie des Agents Infectieux, Laboratoire de Bactériologie, Centre Hospitalier Universitaire Angers, Angers, France
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