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Vandeputte M, van Henten S, van Griensven J, Bottieau E. Which trial do we need? A collaborative platform trial for cutaneous leishmaniasis amongst international travellers. Clin Microbiol Infect 2023; 29:1237-1240. [PMID: 37230249 DOI: 10.1016/j.cmi.2023.05.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/15/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Affiliation(s)
- Martin Vandeputte
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium; Infection Medicine, University of Edinburgh, Edinburgh, UK.
| | - Saskia van Henten
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Johan van Griensven
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Emmanuel Bottieau
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
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Londoño S, Viloria C, Pérez-Buitrago S, Murillo J, Botina D, Zarzycki A, Garzón J, Torres-Madronero MC, Robledo SM, Marzani F, Treuillet S, Castaneda B, Galeano J. Temporal Evaluation of the Surface Area of Treated Skin Ulcers Caused by Cutaneous Leishmaniasis and Relation with Optical Parameters in an Animal Model: A Proof of Concept. SENSORS (BASEL, SWITZERLAND) 2023; 23:5861. [PMID: 37447709 DOI: 10.3390/s23135861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/15/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023]
Abstract
Cutaneous leishmaniasis (CL) is a neglected disease caused by an intracellular parasite of the Leishmania genus. CL lacks tools that allow its understanding and treatment follow-up. This article presents the use of metrical and optical tools for the analysis of the temporal evolution of treated skin ulcers caused by CL in an animal model. Leishmania braziliensis and L. panamensis were experimentally inoculated in golden hamsters, which were treated with experimental and commercial drugs. The temporal evolution was monitored by means of ulcers' surface areas, as well as absorption and scattering optical parameters. Ulcers' surface areas were obtained via photogrammetry, which is a procedure that allowed for 3D modeling of the ulcer using specialized software. Optical parameters were obtained from a spectroscopy study, representing the cutaneous tissue's biological components. A one-way ANOVA analysis was conducted to identify relationships between both the ulcers' areas and optical parameters. As a result, ulcers' surface areas were found to be related to the following optical parameters: epidermis thickness, collagen, keratinocytes, volume-fraction of blood, and oxygen saturation. This study is a proof of concept that shows that optical parameters could be associated with metrical ones, giving a more reliable concept during the assessment of a skin ulcer's healing.
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Affiliation(s)
- Sergio Londoño
- Grupo de Investigación e Innovación Biomédica, Instituto Tecnológico Metropolitano, Medellín 050034, Colombia
| | - Carolina Viloria
- Grupo de Investigación e Innovación Biomédica, Instituto Tecnológico Metropolitano, Medellín 050034, Colombia
| | - Sandra Pérez-Buitrago
- Grupo de Investigación en Dispositivos Médicos, Departamento de Ingeniería, Pontificia Universidad Católica del Perú, Lima 15088, Peru
| | - Javier Murillo
- Programa de Estudio y Control de Enfermedades Tropicales-PECET, Facultad de Medicina, Universidad de Antioquia, Medellín 050010, Colombia
| | - Deivid Botina
- Laboratoire ImViA, Université de Bourgogne, BP 47870, 21078 Dijon Cedex, France
| | | | - Johnson Garzón
- Grupo de Óptica y Espectroscopía, Universidad Pontificia Bolivariana, Medellín 050031, Colombia
| | - Maria C Torres-Madronero
- Research Group on Smart Machine and Pattern Recognition, MIRP Laboratory, Instituto Tecnológico Metropolitano, Medellín 050013, Colombia
| | - Sara M Robledo
- Programa de Estudio y Control de Enfermedades Tropicales-PECET, Facultad de Medicina, Universidad de Antioquia, Medellín 050010, Colombia
| | - Franck Marzani
- Laboratoire ImViA, Université de Bourgogne, BP 47870, 21078 Dijon Cedex, France
| | - Sylvie Treuillet
- Laboratoire Pluridisciplinaire de Recherche Ingénierie des Systèmes, Mécanique, Énergétique-PRISME, Université d'Orléans, 45072 Orléans, France
| | - Benjamin Castaneda
- Grupo de Investigación en Dispositivos Médicos, Departamento de Ingeniería, Pontificia Universidad Católica del Perú, Lima 15088, Peru
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14620, USA
| | - July Galeano
- Grupo de Investigación Materiales Avanzados y Energía MatyEr, Instituto Tecnológico Metropolitano, Medellín 050013, Colombia
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Erber AC, Arana B, Ben Salah A, Bennis I, Boukthir A, Castro Noriega MDM, Cissé M, Cota GF, Handjani F, López-Carvajal L, Marsh K, Medina DM, Plugge E, Lang T, Olliaro P. Patients' preferences of cutaneous leishmaniasis treatment outcomes: Findings from an international qualitative study. PLoS Negl Trop Dis 2020; 14:e0007996. [PMID: 32092059 PMCID: PMC7058360 DOI: 10.1371/journal.pntd.0007996] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 03/05/2020] [Accepted: 12/15/2019] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Cutaneous leishmaniasis (CL) is a disease that often affects exposed skin areas and may heal leaving lifelong scars. Patients' expectations from treatment are rarely considered in drug development for CL. An initiative aiming to address shortcomings in clinical trial design and conduct for CL treatments involving the researchers' community is on-going. This manuscript presents patient-preferred outcomes for CL and an assessment on how to consider these in the conduct of future trials. METHODOLOGY/PRINCIPAL FINDINGS We report preferred treatment outcomes by 74 patients with confirmed CL in endemic regions of Brazil, Burkina Faso, Colombia, Iran, Morocco, Peru and Tunisia during individual in-depth interviews. Beyond outcomes customarily considered in trials (such as lesion appearance and adverse events), patients talked about a large number of outcomes related to quality of life, such as pain, scar formation, and others affecting their work and daily activities. They also reported fears around getting rid of the parasite, disease recurrence, and possible sequelae. CONCLUSIONS/SIGNIFICANCE The study results provide a rich insight into important outcomes for CL treatments, as well as related topics, from the perspective of a diverse patient population. Among the outcomes identified, we argue that those related to quality of life as well as recurrence should be included to a greater extent for assessment in clinical trials, and discuss the suitability of measurement instruments such as the Dermatology Quality of Life Index (DLQI). Interviews also point out the potential need to address concerns related to parasitological cure or scar formation, such as social stigmatization and disability. In addition, patients should be given information in order to clarify reported misconceptions. This study therefore suggests a methodology for consulting CL patients on outcomes as elements of clinical trial design, and how to incorporate these outcomes in trials. It also discusses how reported outcomes could be addressed in clinical care.
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Affiliation(s)
- Astrid C. Erber
- Nuffield Department of Medicine, Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom
- Department of Epidemiology, Center for Public Health, Medical University of Vienna, Vienna, Austria
| | - Byron Arana
- Drugs for Neglected Diseases Initiative (DNDi), Geneva, Switzerland
| | - Afif Ben Salah
- Institut Pasteur de Tunis, Tunis, Tunisia
- Department of Family and Community Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Issam Bennis
- National School of Public Health, Rabat, Morocco
- Department of Public Health, Institute of Tropical Medicine, Antwerp, Belgium
| | | | - María del Mar Castro Noriega
- Centro Internacional de Entrenamiento de Investigaciones Médicas (CIDEIM), Cali, Colombia
- Universidad Icesi, Cali, Colombia
| | | | | | - Farhad Handjani
- Molecular Dermatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Liliana López-Carvajal
- Programa de Estudio y Control de Enfermedades Tropicales (PECET), Universidad de Antioquia, Medellín, Colombia
| | - Kevin Marsh
- Nuffield Department of Medicine, Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom
| | - Dalila Martínez Medina
- Facultad de Medicina “Alberto Hurtado”, Universidad Peruana Cayetano Heredia, Lima, Perú
- Departamento de Enfermedades Infecciosas, Dermatológicas y Tropicales, Hospital Cayetano Heredia, Lima, Perú
| | - Emma Plugge
- Nuffield Department of Medicine, Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom
- UK Collaborating Centre for the WHO Health in Prisons Programme, Public Health England, Reading, United Kingdom
| | - Trudie Lang
- Nuffield Department of Medicine, Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom
| | - Piero Olliaro
- Nuffield Department of Medicine, Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom
- Special Programme for Research & Training in Tropical Diseases (WHO/TDR), Geneva, Switzerland
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Intradermal Synthetic DNA Vaccination Generates Leishmania-Specific T Cells in the Skin and Protection against Leishmania major. Infect Immun 2019; 87:IAI.00227-19. [PMID: 31182618 DOI: 10.1128/iai.00227-19] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 06/04/2019] [Indexed: 01/15/2023] Open
Abstract
Vaccination remains one of the greatest medical breakthroughs in human history and has resulted in the near eradication of many formerly lethal diseases in many countries, including the complete eradication of smallpox. However, there remain a number of diseases for which there are no or only partially effective vaccines. There are numerous hurdles in vaccine development, of which knowing the appropriate immune response to target is one of them. Recently, tissue-resident T cells have been shown to mediate high levels of protection for several infections, although the best way to induce these cells is still unclear. Here we compare the ability to generate skin-resident T cells in sites distant from the immunization site following intramuscular and intradermal injection using optimized synthetic DNA vaccines. We found that mice immunized intradermally with a synthetic consensus DNA HIV envelope vaccine by electroporation (EP) are better able to maintain durable antigen-specific cellular responses in the skin than mice immunized by the intramuscular route. We extended these studies by delivering a synthetic DNA vaccine encoding Leishmania glycosomal phosphoenolpyruvate carboxykinase (PEPCK) by EP and again found that the intradermal route was superior to the intramuscular route for generating skin-resident PEPCK-specific T cells. We observed that when challenged with Leishmania major parasites, mice immunized intradermally exhibited significant protection, while mice immunized intramuscularly did not. The protection seen in intradermally vaccinated mice supports the viability of this platform not only to generate skin-resident T cells but also to promote durable protective immune responses at relevant tissue sites.
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Erber AC, Arana B, Bennis I, Ben Salah A, Boukthir A, Castro Noriega MDM, Cissé M, Cota GF, Handjani F, Kebede MG, Lang T, López Carvajal L, Marsh K, Martinez Medina D, Plugge E, Olliaro P. An international qualitative study exploring patients' experiences of cutaneous leishmaniasis: study set-up and protocol. BMJ Open 2018; 8:e021372. [PMID: 29909372 PMCID: PMC6009565 DOI: 10.1136/bmjopen-2017-021372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
INTRODUCTION Lack of investments in drug development, lack of standardisation of clinical trials and the complexity of disease presentations contribute to the current lack of effective, safe and adapted treatments for cutaneous leishmaniasis (CL). One aspect concerns outcomes affecting patients' quality of life (QoL): these are hardly assessed in trials, despite potential functional and/or aesthetic impairment caused by CL, which typically affects disadvantaged and vulnerable people living in rural areas. Here, we describe the approach used to bring perspectives of patients with CL into designing and assessing treatments. METHODS AND ANALYSIS This international qualitative study uses interviews with patients to explore their experiences with CL to (1) elicit outcomes and eligibility criteria for clinical trials important to them and (2) to better understand their needs and views about the disease and their requirements and expectations from treatment. Here, we describe the set-up of this collaborative study and the protocol. Data collection is ongoing.The protocol includes study design, preparation, conduct and analysis of individual interviews with approximately 80 patients in seven countries (Burkina Faso, Brazil, two sites in Colombia, Iran, Morocco, Peru and Tunisia) where CL is prevalent. Principal investigators and sites were selected through an open call, and two workshops were organised for protocol development and training in conduct and analysis of qualitative health research. Patient recruitment aims at covering a maximum variation of experiences. Transcripts will be analysed to identify outcomes and eligibility criteria as well as further topics that are expected to emerge from the interviews, such as direct and indirect costs related to CL, its psychological impact, preferred modes of drug administration and traditional treatments. ETHICS AND DISSEMINATION The study received ethical approval by the responsible committees of each of the participating institutions. Findings will be disseminated through publication in peer-reviewed journals, scientific meetings and to participants and their communities.
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Affiliation(s)
- Astrid Christine Erber
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Department of Epidemiology, Center for Public Health, Medical University of Vienna, Vienna, Austria
| | - Byron Arana
- Drugs for Neglected Diseases Initiative (DNDi), Geneva, Switzerland
| | - Issam Bennis
- National School of Public Health, Rabat, Morocco
- Department of Public Health, Institute of Tropical Medicine, Antwerp, Belgium
| | - Afif Ben Salah
- Institut Pasteur de Tunis, Tunis, Tunisia
- Department of Family and Community Medicine, College of Medicine and Medical Sciences, Arabian Gulf University (AGU), Manama, Bahrain
| | | | - Maria del Mar Castro Noriega
- Centro Internacional de Entrenamiento de Investigaciones Médicas (CIDEIM), Cali, Colombia
- EDCTP/TDR Fellow, European Vaccine Initiative (EVI), Heidelberg, Germany
| | | | - Gláucia Fernandes Cota
- Centro de Pesquisa René Rachou (CPqRR), Fundação Oswaldo Cruz (FIOCRUZ), Minas Gerais, Brazil
| | - Farhad Handjani
- Molecular Dermatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mairie Guizaw Kebede
- Ayder Referral Hospital, College of Health Sciences, Mekelle University, Mekelle, Ethiopia
| | - Trudie Lang
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Liliana López Carvajal
- Programa de Estudio y Control de Enfermedades Tropicales (PECET), Universidad de Antioquia, Medellín, Colombia
| | - Kevin Marsh
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Dalila Martinez Medina
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
- Departamento de Enfermedades Infecciosas, Dermatológicas y Tropicales, Hospital Cayetano Heredia, Lima, Peru
| | - Emma Plugge
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Piero Olliaro
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Special Programme for Research & Training in Tropical Diseases (WHO/TDR), Geneva, Switzerland
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