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Kimta N, Majdalawieh AF, Nasrallah GK, Puri S, Nipovimova E, Jomova K, Kuča K. Leprosy: Comprehensive insights into pathology, immunology, and cutting-edge treatment strategies, integrating nanoparticles and ethnomedicinal plants. Front Pharmacol 2024; 15:1361641. [PMID: 38818380 PMCID: PMC11137175 DOI: 10.3389/fphar.2024.1361641] [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] [Received: 12/26/2023] [Accepted: 04/19/2024] [Indexed: 06/01/2024] Open
Abstract
Mycobacterium leprae is the causative agent responsible for the chronic disease known as leprosy. This condition is characterized by dermal involvement, often leading to peripheral nerve damage, sensory-motor loss, and related abnormalities. Both innate and acquired immunological responses play a role in the disease, and even in individuals with lepromatous leprosy, there can be a transient increase in T cell immunity during lepromatous reactions. Diagnosing of early-stage leprosy poses significant challenges. In this context, nanoparticles have emerged as a promising avenue for addressing various crucial issues related to leprosy. These include combatting drug resistance, mitigating adverse effects of conventional medications, and enhancing targeted drug delivery. This review serves as a comprehensive compilation, encompassing aspects of pathology, immunology, and adverse effects of multidrug delivery systems in the context of leprosy treatment. Furthermore, the review underscores the significance of ethnomedicinal plants, bioactive secondary metabolites, and nanotherapeutics in the management of leprosy. It emphasizes the potential to bridge the gap between existing literature and ongoing research efforts, with a profound scope for validating traditional claims, developing herbal medicines, and formulating nanoscale drug delivery systems that are safe, effective, and widely accepted.
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Affiliation(s)
- Neetika Kimta
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, India
| | - Amin F. Majdalawieh
- Department of Biology, Chemsitry, and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | | | - Sunil Puri
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, India
| | - Eugenie Nipovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Králové, Czechia
| | - Klaudia Jomova
- Department of Chemistry, Faculty of Natural Sciences and Informatics, Constantine the Philosopher University in Nitra, Nitra, Slovakia
| | - Kamil Kuča
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Králové, Czechia
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2
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Beatty NL, Arango-Ferreira C, Gual-Gonzalez L, Zuluaga S, Nolan MS, Cantillo-Barraza O. Oral Chagas Disease in Colombia-Confirmed and Suspected Routes of Transmission. Trop Med Infect Dis 2024; 9:14. [PMID: 38251211 PMCID: PMC10819552 DOI: 10.3390/tropicalmed9010014] [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: 10/23/2023] [Revised: 12/21/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
Chagas disease (CD) remains endemic throughout many regions of Colombia despite implementing decades of vector control strategies in several departments. Some regions have had a significant decrease in vectorial transmission, but the oral ingestion of Trypanosoma cruzi through consumption of contaminated food and drink products is increasingly described. This form of transmission has important public health relevance in Colombia due to an increase in reported acute CD cases and clinical manifestations that often lead to significant morbidity and mortality. Oral CD in Colombia has been associated with the consumption of contaminated fruit juices, such as palm wine, sugar cane, or tangerine juice and water for consumption, or contaminated surfaces where food has been prepared. Another interesting route of oral transmission includes ingestion of unbeknownst infected armadillos' blood, which is related to a traditional medicine practice in Colombia. Some earlier reports have also implemented consumption of infected bush meat as a source, but this is still being debated. Within the Amazon Basin, oral transmission is now considered the principal cause of acute CD in these regions. Furthermore, new cases of acute CD are now being seen in departments where CD has not been documented, and triatomine vectors are not naturally found, thus raising suspicion for oral transmission. The oral CD could also be considered a food-borne zoonosis, and odoriferous didelphid secretions have been implemented in contaminating the human dwelling environment, increasing the risk of consumption of infectious metacyclic trypomastigotes. In this article, we will discuss the complex transmission dynamics of oral CD in Colombia and further examine the unique clinical manifestations of this route of infection. New insights into the oral transmission of Trypanosoma cruzi are being discovered in Colombia, which can help bring increased awareness and a better understanding of this neglected tropical disease to reduce the burden of CD throughout Latin America.
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Affiliation(s)
- Norman L. Beatty
- Division of Infectious Diseases and Global Medicine, Department of Medicine, University of Florida College of Medicine, Gainesville, FL 32610, USA;
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32610, USA
| | - Catalina Arango-Ferreira
- Departamento de Pediatría, Hospital San Vicente Fundación, Medellín 050010, Colombia;
- Departamento de Pediatría, Facultad de Medicina, Universidad de Antioquia, Medellín 050010, Colombia
| | - Lídia Gual-Gonzalez
- Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA; (L.G.-G.); (M.S.N.)
| | - Sara Zuluaga
- Grupo Biología y Control de Enfermedades Infecciosas, Universidad de Antioquia, Medellín 050010, Colombia;
| | - Melissa S. Nolan
- Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA; (L.G.-G.); (M.S.N.)
| | - Omar Cantillo-Barraza
- Grupo Biología y Control de Enfermedades Infecciosas, Universidad de Antioquia, Medellín 050010, Colombia;
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3
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Osei-Owusu J, Aidoo OF, Eshun F, Gaikpa DS, Dofuor AK, Vigbedor BY, Turkson BK, Ochar K, Opata J, Opoku MJ, Ninsin KD, Borgemeister C. Buruli ulcer in Africa: Geographical distribution, ecology, risk factors, diagnosis, and indigenous plant treatment options - A comprehensive review. Heliyon 2023; 9:e22018. [PMID: 38034712 PMCID: PMC10686891 DOI: 10.1016/j.heliyon.2023.e22018] [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: 07/04/2023] [Revised: 10/09/2023] [Accepted: 11/02/2023] [Indexed: 12/02/2023] Open
Abstract
Buruli ulcer (BU), a neglected tropical disease (NTD), is an infection of the skin and subcutaneous tissue caused by Mycobacterium ulcerans. The disease has been documented in many South American, Asian, and Western Pacific countries and is widespread throughout much of Africa, especially in West and Central Africa. In rural areas with scarce medical care, BU is a devastating disease that can leave patients permanently disabled and socially stigmatized. Mycobacterium ulcerans is thought to produce a mycolactone toxin, which results in necrosis of the afflicted tissue and may be involved in the etiology of BU. Initially, patients may notice a painless nodule or plaque on their skin; as the disease progresses, however, it may spread to other parts of the body, including the muscles and bones. Clinical signs, microbial culture, and histological analysis of afflicted tissue all contribute to a diagnosis of BU. Though antibiotic treatment and surgical removal of infected tissue are necessary for BU management, plant-derived medicine could be an alternative in areas with limited access to conventional medicine. Herein we reviewed the geographical distribution, socioeconomic, risk factors, diagnosis, biology and ecology of the pathogen. Complex environmental, socioeconomic, and genetic factors that influence BU are discussed. Further, our review highlights future research areas needed to develop strategies to manage the disease through the use of indigenous African plants.
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Affiliation(s)
- Jonathan Osei-Owusu
- Department of Physical and Mathematical Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - Owusu Fordjour Aidoo
- Department of Biological Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - Fatima Eshun
- Department of Geography and Earth Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - David Sewordor Gaikpa
- Department of Biological Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - Aboagye Kwarteng Dofuor
- Department of Biological Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - Bright Yaw Vigbedor
- Department of Basic Sciences, University of Health and Allied Sciences, Ho, Ghana
| | - Bernard Kofi Turkson
- Department of Herbal Medicine, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Kingsley Ochar
- Council for Scientific and Industrial Research, Plant Genetic Resources Research Institute, Bunso, Ghana
| | - John Opata
- Department of Biological Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - Maxwell Jnr. Opoku
- Department of Biological Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - Kodwo Dadzie Ninsin
- Department of Biological Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - Christian Borgemeister
- Centre for Development Research (ZEF), University of Bonn, Genscherallee 3, 53113 Bonn, Germany
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Molecular signatures for gene expression in Mycobacterium leprae: A bioinformatic analysis. GENE REPORTS 2023. [DOI: 10.1016/j.genrep.2023.101741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Sugawara-Mikami M, Tanigawa K, Kawashima A, Kiriya M, Nakamura Y, Fujiwara Y, Suzuki K. Pathogenicity and virulence of Mycobacterium leprae. Virulence 2022; 13:1985-2011. [PMID: 36326715 PMCID: PMC9635560 DOI: 10.1080/21505594.2022.2141987] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Leprosy is caused by Mycobacterium leprae (M. leprae) and M. lepromatosis, an obligate intracellular organism, and over 200,000 new cases occur every year. M. leprae parasitizes histiocytes (skin macrophages) and Schwann cells in the peripheral nerves. Although leprosy can be treated by multidrug therapy, some patients relapse or have a prolonged clinical course and/or experience leprosy reaction. These varying outcomes depend on host factors such as immune responses against bacterial components that determine a range of symptoms. To understand these host responses, knowledge of the mechanisms by which M. leprae parasitizes host cells is important. This article describes the characteristics of leprosy through bacteriology, genetics, epidemiology, immunology, animal models, routes of infection, and clinical findings. It also discusses recent diagnostic methods, treatment, and measures according to the World Health Organization (WHO), including prevention. Recently, the antibacterial activities of anti-hyperlipidaemia agents against other pathogens, such as M. tuberculosis and Staphylococcus aureus have been investigated. Our laboratory has been focused on the metabolism of lipids which constitute the cell wall of M. leprae. Our findings may be useful for the development of future treatments.
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Affiliation(s)
- Mariko Sugawara-Mikami
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan.,West Yokohama Sugawara Dermatology Clinic, Yokohama, Japan
| | - Kazunari Tanigawa
- Department of Molecular Pharmaceutics, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | - Akira Kawashima
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan
| | - Mitsuo Kiriya
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan
| | - Yasuhiro Nakamura
- Department of Molecular Pharmaceutics, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | - Yoko Fujiwara
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan
| | - Koichi Suzuki
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan
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Hess S, Kendall TJ, Pena M, Yamane K, Soong D, Adams L, Truman R, Rambukkana A. In vivo partial reprogramming by bacteria promotes adult liver organ growth without fibrosis and tumorigenesis. Cell Rep Med 2022; 3:100820. [PMID: 36384103 PMCID: PMC9729881 DOI: 10.1016/j.xcrm.2022.100820] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 05/04/2022] [Accepted: 10/18/2022] [Indexed: 11/17/2022]
Abstract
Ideal therapies for regenerative medicine or healthy aging require healthy organ growth and rejuvenation, but no organ-level approach is currently available. Using Mycobacterium leprae (ML) with natural partial cellular reprogramming capacity and its animal host nine-banded armadillos, we present an evolutionarily refined model of adult liver growth and regeneration. In infected armadillos, ML reprogram the entire liver and significantly increase total liver/body weight ratio by increasing healthy liver lobules, including hepatocyte proliferation and proportionate expansion of vasculature, and biliary systems. ML-infected livers are microarchitecturally and functionally normal without damage, fibrosis, or tumorigenesis. Bacteria-induced reprogramming reactivates liver progenitor/developmental/fetal genes and upregulates growth-, metabolism-, and anti-aging-associated markers with minimal change in senescence and tumorigenic genes, suggesting bacterial hijacking of homeostatic, regeneration pathways to promote de novo organogenesis. This may facilitate the unraveling of endogenous pathways that effectively and safely re-engage liver organ growth, with broad therapeutic implications including organ regeneration and rejuvenation.
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Affiliation(s)
- Samuel Hess
- Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, UK,Centre for Regenerative Medicine, The University of Edinburgh, Edinburgh, UK
| | - Timothy J. Kendall
- Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, UK,Centre for Inflammation Research, The University of Edinburgh, Edinburgh, UK,Edinburgh Pathology, The University of Edinburgh, Edinburgh, UK
| | - Maria Pena
- US Department of Health and Human Services, Health Resources and Services Administration, Healthcare Systems Bureau, National Hansen’s Disease Program, Baton Rouge, LA, USA
| | - Keitaro Yamane
- Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, UK,Centre for Regenerative Medicine, The University of Edinburgh, Edinburgh, UK
| | - Daniel Soong
- Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, UK,Medical Research Council Centre for Reproductive Health, The University of Edinburgh, Edinburgh, UK
| | - Linda Adams
- US Department of Health and Human Services, Health Resources and Services Administration, Healthcare Systems Bureau, National Hansen’s Disease Program, Baton Rouge, LA, USA
| | - Richard Truman
- US Department of Health and Human Services, Health Resources and Services Administration, Healthcare Systems Bureau, National Hansen’s Disease Program, Baton Rouge, LA, USA,Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Anura Rambukkana
- Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, UK; Centre for Regenerative Medicine, The University of Edinburgh, Edinburgh, UK; Edinburgh Infectious Diseases, The University of Edinburgh, Edinburgh, UK; Centre for Discovery Brain Sciences, The University of Edinburgh, Edinburgh, UK.
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7
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Pepperell CS. Evolution of Tuberculosis Pathogenesis. Annu Rev Microbiol 2022; 76:661-680. [PMID: 35709500 DOI: 10.1146/annurev-micro-121321-093031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Mycobacterium tuberculosis is a globally distributed, lethal pathogen of humans. The virulence armamentarium of M. tuberculosis appears to have been developed on a scaffold of antiphagocytic defenses found among diverse, mostly free-living species of Mycobacterium. Pathoadaptation was further aided by the modularity, flexibility, and interactivity characterizing mycobacterial effectors and their regulators. During emergence of M. tuberculosis, novel genetic material was acquired, created, and integrated with existing tools. The major mutational mechanisms underlying these adaptations are discussed in this review, with examples. During its evolution, M. tuberculosis lost the ability and/or opportunity to engage in lateral gene transfer, but despite this it has retained the adaptability that characterizes mycobacteria. M. tuberculosis exemplifies the evolutionary genomic mechanisms underlying adoption of the pathogenic niche, and studies of its evolution have uncovered a rich array of discoveries about how new pathogens are made. Expected final online publication date for the Annual Review of Microbiology, Volume 76 is September 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Caitlin S Pepperell
- Division of Infectious Diseases, Department of Medicine, and Department of Medical Microbiology and Immunology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, USA;
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8
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de Lima MF, Silvestre MDPSA, dos Santos EC, Martins LC, Quaresma JAS, de Barros BDCV, Silva MJA, Lima LNGC. The Presence of Mycobacterium leprae in Wild Rodents. Microorganisms 2022; 10:microorganisms10061114. [PMID: 35744632 PMCID: PMC9228809 DOI: 10.3390/microorganisms10061114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/20/2022] [Accepted: 05/24/2022] [Indexed: 11/16/2022] Open
Abstract
Leprosy is a chronic infection caused by Mycobacterium leprae. There is a lack of data regarding environmental reservoirs, which may represent a serious public health problem in Brazil, especially in the state of Pará, which occupies the fourth position in incidence of cases in the country. Previous studies report evidence of infection occurring among armadillos, mangabei monkeys, and chimpanzees. In the present study, wild animals were captured and tested for the presence of anti-PGL-1 antibodies and M. leprae DNA. Fieldwork was carried out from October to November of 2016 in the cities of Curionópolis and Canaã dos Carajás, southeast of Pará state. Small and medium-sized wild animals were captured using appropriate traps. A total of 15 animals were captured. Sera and viscera fragments were collected and tested by ELISA and PCR methods. The presence of M. leprae DNA was confirmed by sequencing of specific gyrase gene in three animals of two different species, including one Necromys lasiurus (liver sample) and two Proechimys roberti (kidney and liver samples). This unprecedented finding suggests that species other than those previously reported are responsible for maintaining M. leprae in nature.
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Affiliation(s)
- Maxwell Furtado de Lima
- Bacteriology and Mycology Section, Evandro Chagas Institute (IEC), Ananindeua 67030-000, PA, Brazil; (M.F.d.L.); (M.d.P.S.A.S.); (E.C.d.S.); (M.J.A.S.)
| | | | - Everaldina Cordeiro dos Santos
- Bacteriology and Mycology Section, Evandro Chagas Institute (IEC), Ananindeua 67030-000, PA, Brazil; (M.F.d.L.); (M.d.P.S.A.S.); (E.C.d.S.); (M.J.A.S.)
| | - Lívia Caricio Martins
- Arbovirology and Hemorrhagic Fevers Section, Evandro Chagas Institute (IEC), Ananindeua 67030-000, PA, Brazil;
| | | | | | - Marcos Jessé Abrahão Silva
- Bacteriology and Mycology Section, Evandro Chagas Institute (IEC), Ananindeua 67030-000, PA, Brazil; (M.F.d.L.); (M.d.P.S.A.S.); (E.C.d.S.); (M.J.A.S.)
| | - Luana Nepomuceno Gondim Costa Lima
- Bacteriology and Mycology Section, Evandro Chagas Institute (IEC), Ananindeua 67030-000, PA, Brazil; (M.F.d.L.); (M.d.P.S.A.S.); (E.C.d.S.); (M.J.A.S.)
- Correspondence: ; Tel.: +55-(91)-98379-3537
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Haywood CJ, Jordon AM, Pena M, Nielsen CK, Jiménez FA. Tissue and Gastrointestinal Parasites of Colonizing Nine-Banded Armadillos at the Edge of Their Northern Range. J Parasitol 2022; 108:57-63. [DOI: 10.1645/21-76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Carly J. Haywood
- School of Biological Sciences, Southern Illinois University, 1125 Lincoln Drive, Carbondale, Illinois 62901-6501
| | - Abigail M. Jordon
- School of Biological Sciences, Southern Illinois University, 1125 Lincoln Drive, Carbondale, Illinois 62901-6501
| | - Maria Pena
- U.S. Department of Health and Human Services, Health Resources and Services Administration, Health Systems Bureau, National Hansen's Disease Program, Baton Rouge, Louisiana 70809
| | - Clayton K. Nielsen
- School of Biological Sciences, Southern Illinois University, 1125 Lincoln Drive, Carbondale, Illinois 62901-6501
| | - F. Agustín Jiménez
- School of Biological Sciences, Southern Illinois University, 1125 Lincoln Drive, Carbondale, Illinois 62901-6501
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Serrano-Coll H, Osorio-Leal Y, Escobar-Builes MV, Cardona-Castro N. Detection of Mycobacterium leprae infection in family clusters from six leprosy-endemic regions in Colombia. Trans R Soc Trop Med Hyg 2021; 116:501-508. [PMID: 34791501 DOI: 10.1093/trstmh/trab170] [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: 06/23/2021] [Revised: 10/04/2021] [Accepted: 10/22/2021] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Leprosy is a chronic infectious disease caused by Mycobacterium leprae, which continues to be endemic in tropical countries, making it necessary to implement strategies for its elimination. The objective of the current article was to detect M. leprae infection and associated factors through serological and epidemiological evaluation in family clusters of leprosy patients. METHODS Mycobacterium leprae infection was determined in 50 family clusters of leprosy patients from the departments of Bolívar, Atlántico, Santander, Boyacá, Chocó and Antioquia through the detection of antibodies (protein A, IgM, IgG) against anti-natural octyl disacharide-leprosy IDRI diagnostic (NDO-LID). RESULTS Higher seroconversion and elevated titers of these antibodies against NDO-LID were observed in the population of Chocó and Atlántico (p<0.05). Additionally, a higher frequency of infection was observed in large family groups that consumed armadillo meat and belonged to a low socioeconomic stratum (p<0.05). Multivariate analysis established that the main associated factors for a family cluster experiencing this infection were belonging to a vulnerable economic stratum and a large family group. CONCLUSIONS This study found that the set of social and demographic variables (i.e. armadillo consumption, geographic area, low socioeconomic status and belonging to a large family cluster) are related to the promotion of seropositivity in family clusters.
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Affiliation(s)
- Héctor Serrano-Coll
- Colombian Institute of Tropical Medicine CES University, Sabaneta, Antioquia, Colombia Cra 43 A # 52 Sur 99. Post code 055457
| | - Yuliana Osorio-Leal
- Universidad de Antioquia, Public Health School, Calle 62b No. 52-59. Medellin Colombia. Post code 050010
| | - María Victoria Escobar-Builes
- Colombian Institute of Tropical Medicine CES University, Sabaneta, Antioquia, Colombia Cra 43 A # 52 Sur 99. Post code 055457
| | - Nora Cardona-Castro
- Colombian Institute of Tropical Medicine CES University, Sabaneta, Antioquia, Colombia Cra 43 A # 52 Sur 99. Post code 055457
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Zhou Z, Pena M, van Hooij A, Pierneef L, de Jong D, Stevenson R, Walley R, Corstjens PLAM, Truman R, Adams L, Geluk A. Detection and Monitoring of Mycobacterium leprae Infection in Nine Banded Armadillos ( Dasypus novemcinctus) Using a Quantitative Rapid Test. Front Microbiol 2021; 12:763289. [PMID: 34777319 PMCID: PMC8581735 DOI: 10.3389/fmicb.2021.763289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/04/2021] [Indexed: 11/13/2022] Open
Abstract
Leprosy is an infectious disease caused by Mycobacterium leprae with tropism for skin and peripheral nerves. Incessant transmission in endemic areas is still impeding elimination of leprosy. Although detection of M. leprae infection remains a challenge in asymptomatic individuals, the presence of antibodies specific for phenolglycolipid-I (PGL-I) correlate with bacterial load. Therefore, serosurveillance utilizing field-friendly tests detecting anti-PGL-I antibodies, can be applied to identify those who may transmit bacteria and to study (reduction of) M. leprae transmission. However, serology based on antibody detection cannot discriminate between past and present M. leprae infection in humans, nor can it detect individuals carrying low bacillary loads. In humans, anti-PGL-I IgM levels are long-lasting and usually detected in more individuals than anti-PGL-I IgG levels. Inherent to the characteristically long incubation time of leprosy, IgM/IgG relations (antibody kinetics) in leprosy patients and infected individuals are not completely clear. To investigate the antibody response directly after infection, we have measured antibody levels by ELISA, in longitudinal samples of experimentally M. leprae infected, susceptible nine-banded armadillos (Dasypus novemcinctus). In addition, we assessed the user- and field-friendly, low-cost lateral flow assay (LFA) utilizing upconverting reporter particles (UCP), developed for quantitative detection of human anti-PGL-I IgM (UCP-LFA), to detect treatment- or vaccination-induced changes in viable bacterial load. Our results show that serum levels of anti-PGL-I IgM, and to a lesser extent IgG, significantly increase soon after experimental M. leprae infection in armadillos. In view of leprosy phenotypes in armadillos, this animal model can provide useful insight into antibody kinetics in early infection in the various spectral forms of human leprosy. The UCP-LFA for quantitative detection of anti-PGL-I IgM allows monitoring the efficacy of vaccination and rifampin-treatment in the armadillo leprosy model, thereby providing a convenient tool to evaluate the effects of drugs and vaccines and new diagnostics.
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Affiliation(s)
- Zijie Zhou
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Maria Pena
- U.S. Department of Health and Human Services, Health Resources and Services Administration, Health Systems Bureau, National Hansen Disease Programme (NHDP), Baton Rouge, LA, United States
| | - Anouk van Hooij
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Louise Pierneef
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Danielle de Jong
- Department Cell and Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - Roena Stevenson
- U.S. Department of Health and Human Services, Health Resources and Services Administration, Health Systems Bureau, National Hansen Disease Programme (NHDP), Baton Rouge, LA, United States
| | - Rachel Walley
- U.S. Department of Health and Human Services, Health Resources and Services Administration, Health Systems Bureau, National Hansen Disease Programme (NHDP), Baton Rouge, LA, United States
| | - Paul L A M Corstjens
- Department Cell and Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - Richard Truman
- Department of Pathobiological Sciences, Louisiana State University, Baton Rouge, LA, United States
| | - Linda Adams
- U.S. Department of Health and Human Services, Health Resources and Services Administration, Health Systems Bureau, National Hansen Disease Programme (NHDP), Baton Rouge, LA, United States
| | - Annemieke Geluk
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
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Gautam S, Sharma D, Goel A, Patil SA, Bisht D. Insights into Mycobacterium leprae Proteomics and Biomarkers-An Overview. Proteomes 2021; 9:7. [PMID: 33573064 PMCID: PMC7931084 DOI: 10.3390/proteomes9010007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 02/07/2023] Open
Abstract
Although leprosy is curable, the identification of biomarkers for the early diagnosis of leprosy would play a pivotal role in reducing transmission and the overall prevalence of the disease. Leprosy-specific biomarkers for diagnosis, particularly for the paucibacillary disease, are not well defined. Therefore, the identification of new biomarkers for leprosy is one of the prime themes of leprosy research. Studying Mycobacterium leprae, the causative agent of leprosy, at the proteomic level may facilitate the identification, quantification, and characterization of proteins that could be potential diagnostics or targets for drugs and can help in better understanding the pathogenesis. This review aims to shed light on the knowledge gained to understand leprosy or its pathogen employing proteomics and its role in diagnosis.
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Affiliation(s)
- Sakshi Gautam
- Department of Biochemistry, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra 282004, India; (S.G.); (D.S.); (S.A.P.)
- Department of Biotechnology, GLA University, NH-2, Mathura-Delhi Road, Mathura 281406, India;
| | - Devesh Sharma
- Department of Biochemistry, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra 282004, India; (S.G.); (D.S.); (S.A.P.)
| | - Anjana Goel
- Department of Biotechnology, GLA University, NH-2, Mathura-Delhi Road, Mathura 281406, India;
| | - Shripad A. Patil
- Department of Biochemistry, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra 282004, India; (S.G.); (D.S.); (S.A.P.)
| | - Deepa Bisht
- Department of Biochemistry, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra 282004, India; (S.G.); (D.S.); (S.A.P.)
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13
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Yasmin H, Varghese PM, Bhakta S, Kishore U. Pathogenesis and Host Immune Response in Leprosy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1313:155-177. [PMID: 34661895 DOI: 10.1007/978-3-030-67452-6_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Leprosy is an ancient insidious disease caused by Mycobacterium leprae, where the skin and peripheral nerves undergo chronic granulomatous infections, leading to sensory and motor impairment with characteristic deformities. Susceptibility to leprosy and its disease state are determined by the manifestation of innate immune resistance mediated by cells of monocyte lineage. Due to insufficient innate resistance, granulomatous infection is established, influencing the specific cellular immunity. The clinical presentation of leprosy ranges between two stable polar forms (tuberculoid to lepromatous) and three unstable borderline forms. The tuberculoid form involves Th1 response, characterized by a well demarcated granuloma, infiltrated by CD4+ T lymphocytes, containing epitheloid and multinucleated giant cells. In the lepromatous leprosy, there is no characteristic granuloma but only unstructured accumulation of ineffective macrophages containing engulfed pathogens. Th1 response, characterised by IFN-γ and IL-2 production, activates macrophages in order to kill intracellular pathogens. Conversely, a Th2 response, characterized by the production of IL-4, IL-5 and IL-10, helps in antibody production and consequently downregulates the cell-mediated immunity induced by the Th1 response. M. lepare has a long generation time and its inability to grow in culture under laboratory conditions makes its study challenging. The nine-banded armadillo still remains the best clinical and immunological model to study host-pathogen interaction in leprosy. In this chapter, we present cellular morphology and the genomic uniqueness of M. leprae, and how the pathogen shows tropism for Schwann cells, macrophages and dendritic cells.
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Affiliation(s)
- Hadida Yasmin
- Immunology and Cell Biology Laboratory, Department of Zoology, Cooch Behar Panchanan Barma University, Cooch Behar, West Bengal, India
| | - Praveen Mathews Varghese
- Biosciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UK.,School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
| | - Sanjib Bhakta
- Department of Biological Sciences, Institute of Structural and Molecular Biology, Birkbeck, University of London, London, UK
| | - Uday Kishore
- Biosciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UK
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14
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Chaves LL, Patriota Y, Soares-Sobrinho JL, Vieira ACC, Lima SAC, Reis S. Drug Delivery Systems on Leprosy Therapy: Moving Towards Eradication? Pharmaceutics 2020; 12:E1202. [PMID: 33322356 PMCID: PMC7763250 DOI: 10.3390/pharmaceutics12121202] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/28/2020] [Accepted: 12/04/2020] [Indexed: 11/16/2022] Open
Abstract
Leprosy disease remains an important public health issue as it is still endemic in several countries. Mycobacterium leprae, the causative agent of leprosy, presents tropism for cells of the reticuloendothelial and peripheral nervous system. Current multidrug therapy consists of clofazimine, dapsone and rifampicin. Despite significant improvements in leprosy treatment, in most programs, successful completion of the therapy is still sub-optimal. Drug resistance has emerged in some countries. This review discusses the status of leprosy disease worldwide, providing information regarding infectious agents, clinical manifestations, diagnosis, actual treatment and future perspectives and strategies on targets for an efficient targeted delivery therapy.
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Affiliation(s)
- Luíse L. Chaves
- Laboratório Associado para a Química Verde, Rede de Química e Tecnologia, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal; (A.C.C.V.); (S.A.C.L.)
- Núcleo de Controle de Qualidade de Medicamentos e Correlatos, Universidade Federal de Pernambuco, Recife 50740-521, Brazil; (Y.P.); (J.L.S.-S.)
| | - Yuri Patriota
- Núcleo de Controle de Qualidade de Medicamentos e Correlatos, Universidade Federal de Pernambuco, Recife 50740-521, Brazil; (Y.P.); (J.L.S.-S.)
| | - José L. Soares-Sobrinho
- Núcleo de Controle de Qualidade de Medicamentos e Correlatos, Universidade Federal de Pernambuco, Recife 50740-521, Brazil; (Y.P.); (J.L.S.-S.)
| | - Alexandre C. C. Vieira
- Laboratório Associado para a Química Verde, Rede de Química e Tecnologia, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal; (A.C.C.V.); (S.A.C.L.)
- Laboratório de Tecnologia dos Medicamentos, Universidade Federal de Pernambuco, Recife 50740-521, Brazil
| | - Sofia A. Costa Lima
- Laboratório Associado para a Química Verde, Rede de Química e Tecnologia, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal; (A.C.C.V.); (S.A.C.L.)
- Cooperativa de Ensino Superior Politécnico e Universitário, Instituto Universitário de Ciências da Saúde, 4585-116 Gandra, Portugal
| | - Salette Reis
- Laboratório Associado para a Química Verde, Rede de Química e Tecnologia, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal; (A.C.C.V.); (S.A.C.L.)
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15
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Understanding and Treating Niemann-Pick Type C Disease: Models Matter. Int J Mol Sci 2020; 21:ijms21238979. [PMID: 33256121 PMCID: PMC7730076 DOI: 10.3390/ijms21238979] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 02/06/2023] Open
Abstract
Biomedical research aims to understand the molecular mechanisms causing human diseases and to develop curative therapies. So far, these goals have been achieved for a small fraction of diseases, limiting factors being the availability, validity, and use of experimental models. Niemann–Pick type C (NPC) is a prime example for a disease that lacks a curative therapy despite substantial breakthroughs. This rare, fatal, and autosomal-recessive disorder is caused by defects in NPC1 or NPC2. These ubiquitously expressed proteins help cholesterol exit from the endosomal–lysosomal system. The dysfunction of either causes an aberrant accumulation of lipids with patients presenting a large range of disease onset, neurovisceral symptoms, and life span. Here, we note general aspects of experimental models, we describe the line-up used for NPC-related research and therapy development, and we provide an outlook on future topics.
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Avanzi C, Singh P, Truman RW, Suffys PN. Molecular epidemiology of leprosy: An update. INFECTION GENETICS AND EVOLUTION 2020; 86:104581. [PMID: 33022427 DOI: 10.1016/j.meegid.2020.104581] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 09/27/2020] [Accepted: 10/01/2020] [Indexed: 12/27/2022]
Abstract
Molecular epidemiology investigations are notoriously challenging in the leprosy field mainly because the inherent characteristics of the disease as well as its yet uncultivated causative agents, Mycobacterium leprae and M. lepromatosis. Despite significant developments in understanding the biology of leprosy bacilli through genomic approaches, the exact mechanisms of transmission is still unclear and the factors underlying pathological variation of the disease in different patients remain as major gaps in our knowledge about leprosy. Despite these difficulties, the last two decades have seen the development of genotyping procedures based on PCR-sequencing of target loci as well as by the genome-wide analysis of an increasing number of geographically diverse isolates of leprosy bacilli. This has provided a foundation for molecular epidemiology studies that are bringing a better understanding of strain evolution associated with ancient human migrations, and phylogeographical insights about the spread of disease globally. This review discusses the advantages and drawbacks of the main tools available for molecular epidemiological investigations of leprosy and summarizes various methods ranging from PCR-based genotyping to genome-typing techniques. We also describe their main applications in analyzing the short-range and long-range transmission of the disease. Finally, we summarise the current gaps and challenges that remain in the field of molecular epidemiology of leprosy.
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Affiliation(s)
- Charlotte Avanzi
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, USA; Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
| | - Pushpendra Singh
- Indian Council of Medical Research - National Institute of Research in Tribal Health, Jabalpur, India
| | - Richard W Truman
- Department of Pathobiological Sciences, Louisiana State University, Baton Rouge, LO, USA
| | - Philip N Suffys
- Laboratory of Molecular Biology Applied to Mycobacteria - Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil.
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17
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Herrmann T, Karunakaran MM, Fichtner AS. A glance over the fence: Using phylogeny and species comparison for a better understanding of antigen recognition by human γδ T-cells. Immunol Rev 2020; 298:218-236. [PMID: 32981055 DOI: 10.1111/imr.12919] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 07/30/2020] [Accepted: 08/10/2020] [Indexed: 01/20/2023]
Abstract
Both, jawless and jawed vertebrates possess three lymphocyte lineages defined by highly diverse antigen receptors: Two T-cell- and one B-cell-like lineage. In both phylogenetic groups, the theoretically possible number of individual antigen receptor specificities can even outnumber that of lymphocytes of a whole organism. Despite fundamental differences in structure and genetics of these antigen receptors, convergent evolution led to functional similarities between the lineages. Jawed vertebrates possess αβ and γδ T-cells defined by eponymous αβ and γδ T-cell antigen receptors (TCRs). "Conventional" αβ T-cells recognize complexes of Major Histocompatibility Complex (MHC) class I and II molecules and peptides. Non-conventional T-cells, which can be αβ or γδ T-cells, recognize a large variety of ligands and differ strongly in phenotype and function between species and within an organism. This review describes similarities and differences of non-conventional T-cells of various species and discusses ligands and functions of their TCRs. A special focus is laid on Vγ9Vδ2 T-cells whose TCRs act as sensors for phosphorylated isoprenoid metabolites, so-called phosphoantigens (PAg), associated with microbial infections or altered host metabolism in cancer or after drug treatment. We discuss the role of butyrophilin (BTN)3A and BTN2A1 in PAg-sensing and how species comparison can help in a better understanding of this human Vγ9Vδ2 T-cell subset.
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Affiliation(s)
- Thomas Herrmann
- Institute for Virology and Immunobiology, Julius-Maximilians-University Würzburg, Würzburg, Germany
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18
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An Update on the Molecular Basis of Phosphoantigen Recognition by Vγ9Vδ2 T Cells. Cells 2020; 9:cells9061433. [PMID: 32527033 PMCID: PMC7348870 DOI: 10.3390/cells9061433] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 01/29/2023] Open
Abstract
About 1-5% of human blood T cells are Vγ9Vδ2 T cells. Their hallmark is the expression of T cell antigen receptors (TCR) whose γ-chains contain a rearrangement of Vγ9 with JP (TRGV9JP or Vγ2Jγ1.2) and are paired with Vδ2 (TRDV2)-containing δ-chains. These TCRs respond to phosphoantigens (PAg) such as (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate (HMBPP), which is found in many pathogens, and isopentenyl pyrophosphate (IPP), which accumulates in certain tumors or cells treated with aminobisphosphonates such as zoledronate. Until recently, these cells were believed to be restricted to primates, while no such cells are found in rodents. The identification of three genes pivotal for PAg recognition encoding for Vγ9, Vδ2, and butyrophilin (BTN) 3 in various non-primate species identified candidate species possessing PAg-reactive Vγ9Vδ2 T cells. Here, we review the current knowledge of the molecular basis of PAg recognition. This not only includes human Vγ9Vδ2 T cells and the recent discovery of BTN2A1 as Vγ9-binding protein mandatory for the PAg response but also insights gained from the identification of functional PAg-reactive Vγ9Vδ2 T cells and BTN3 in the alpaca and phylogenetic comparisons. Finally, we discuss models of the molecular basis of PAg recognition and implications for the development of transgenic mouse models for PAg-reactive Vγ9Vδ2 T cells.
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19
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Leprosy Transmission in Amazonian Countries: Current Status and Future Trends. CURRENT TROPICAL MEDICINE REPORTS 2020. [DOI: 10.1007/s40475-020-00206-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Abstract
Purpose of Review
Leprosy is one of the first pathologies described in the history of mankind. However, the ecology, transmission, and pathogenicity of the incriminated bacilli remain poorly understood. Despite effective treatment freely distributed worldwide since 1995, around 200,000 new cases continue to be detected yearly, mostly in the tropics. This review aims to discuss the unique characteristics of leprosy in Amazonian countries, which exhibit a very heterogeneous prevalence among human and animal reservoirs.
Recent Findings
Groundbreaking discoveries made in the last 15 years have challenged the dogmas about leprosy reservoirs, transmission, and treatment. The discovery of a new leprosy causative agent in 2008 and the scientific proof of zoonosis transmission of leprosy by nine-banded armadillos in the southern USA in 2011 challenged the prospects of leprosy eradication. In the Amazonian biome, nine-banded and other armadillo species are present but the lack of large-scale studies does not yet allow accurate assessment of the zoonotic risk. Brazil is the second country in the world reporting the highest number of new leprosy cases annually. The disease is also present, albeit with different rates, in all neighboring countries. Throughout the Amazonian biome, leprosy is mainly found in hyperendemic foci, conducive to the emergence and transmission of drug-resistant strains.
Summary
The deepening of current knowledge on leprosy reservoirs, transmission, and therapeutic issues, with the One Health approach and the help of molecular biology, will allow a better understanding and management of the public health issues and challenges related to leprosy in Amazonia.
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20
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Deps P, Antunes JM, Santos AR, Collin SM. Prevalence of Mycobacterium leprae in armadillos in Brazil: A systematic review and meta-analysis. PLoS Negl Trop Dis 2020; 14:e0008127. [PMID: 32203502 PMCID: PMC7156091 DOI: 10.1371/journal.pntd.0008127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 04/14/2020] [Accepted: 02/10/2020] [Indexed: 12/15/2022] Open
Abstract
Understanding the prevalence of M. leprae infection in armadillos is important because of evidence from Brazil and other countries of an association between contact with armadillos and the development of Hansen’s Disease (leprosy). Our aim was to characterize studies which have investigated natural M. leprae infection in wild armadillos in Brazil, and to quantify and explore variability in the reported prevalence of infection. We conducted a systematic review (PROSPERO CRD42019155277) of publications in MEDLINE, EMBASE, Global Health, Scopus, LILACS, Biblioteca Digital Brasileira de Teses e Dissertações, Catálogo de Teses e Dissertações de CAPES, and Biblioteca Virtual em Saúde up to 10/2019 using Mesh and text search terms (in English, Portuguese, Spanish, and French). The 10 included studies represented a total sample of 302 armadillos comprising 207 (69%) Dasypus novemcinctus, 67 (22%) Euphractus sexcinctus, 16 (5%) Priodontes maximus, 10 (3%) Cabassous unicinctus, and 2 (1%) Cabassous tatouay from 7 different states. Methods used included histopathology (4 studies), PGL-1 and LID-1 antigen detection (4 studies) and examination for clinical signs of disease (4 studies). Eight studies used PCR of which 7 targeted the RLEP repetitive element and 3 tested for inhibitory substances. M. leprae prevalence by PCR ranged from 0% (in 3 studies) to 100% in one study, with a summary estimate of 9.4% (95% CI 0.4% to 73.1%) and a predictive interval of 0–100%. The average prevalence is equivalent to 1 in 10 armadillos in Brazil being infected with M. leprae, but wide variation in sample estimates means that the prevalence in any similar study would be entirely unpredictable. We propose instead that future studies aim to investigate transmission and persistence of M. leprae within and between armadillo populations, meanwhile adopting the precautionary principle to protect human health and an endangered species in Brazil. The risk to human health of contact with armadillos infected with Mycobacterium leprae, a bacterium that causes Hansen’s Disease (leprosy), is uncertain, but evidence from Brazil and other countries appears to show a link between contact with armadillos and increased risk of Hansen’s Disease in people. How much of Hansen’s Disease in the human population is caused by contact with armadillos will depend on the size of the risk, the type and frequency of contact and how common it is in the population, and the role of other (human-to-human) transmission routes for Mycobacterium leprae. Our review has shown that one other key factor, the proportion of wild armadillos infected with Mycobacterium leprae, cannot be predicted with any certainty based on data from studies conducted to date. We suggest that much bigger and longer-term studies are needed, perhaps in partnership with animal conservation and ecology groups, to map Mycobacterium leprae infection in armadillos across Brazil and correlate this with proximity to human habitats. At the same time, data must be gathered in studies focused on populations of armadillos to characterize Mycobacterium leprae transmission and persistence within groups of animals, for example, using trackers and repeated sampling over the animals’ lifespans. In the meantime, the precautionary principle should prevail, and public health and educational efforts should be directed to improving community knowledge and changing behaviour to protect people and armadillos.
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Affiliation(s)
- Patrícia Deps
- Department of Social Medicine, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil
- Postgraduate Programme in Infectious Diseases, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil
- * E-mail:
| | - João Marcelo Antunes
- Universidade Federal Rural do Semi-Árido, Hospital Veterinário Jerônimo Dix-Huit Rosado Maia, Mossoró, Rio Grande do Norte, Brazil
| | - Adalberto Rezende Santos
- Laboratório de Biologia Molecular Aplicada a Micobactérias, Instituto Oswaldo Cruz (IOC/Fiocruz), Rio de Janeiro, Brazil
| | - Simon M. Collin
- National Infection Service, Public Health England, London, United Kingdom
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21
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Cell Biology of Intracellular Adaptation of Mycobacterium leprae in the Peripheral Nervous System. Microbiol Spectr 2020; 7. [PMID: 31322104 DOI: 10.1128/microbiolspec.bai-0020-2019] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The mammalian nervous system is invaded by a number of intracellular bacterial pathogens which can establish and progress infection in susceptible individuals. Subsequent clinical manifestation is apparent with the impairment of the functional units of the nervous system, i.e., the neurons and the supporting glial cells that produce myelin sheaths around axons and provide trophic support to axons and neurons. Most of these neurotrophic bacteria display unique features, have coevolved with the functional sophistication of the nervous system cells, and have adapted remarkably to manipulate neural cell functions for their own advantage. Understanding how these bacterial pathogens establish intracellular adaptation by hijacking endogenous pathways in the nervous system, initiating myelin damage and axonal degeneration, and interfering with myelin maintenance provides new knowledge not only for developing strategies to combat neurodegenerative conditions induced by these pathogens but also for gaining novel insights into cellular and molecular pathways that regulate nervous system functions. Since the pathways hijacked by bacterial pathogens may also be associated with other neurodegenerative diseases, it is anticipated that detailing the mechanisms of bacterial manipulation of neural systems may shed light on common mechanisms, particularly of early disease events. This chapter details a classic example of neurodegeneration, that caused by Mycobacterium leprae, which primarily infects glial cells of the peripheral nervous system (Schwann cells), and how it targets and adapts intracellularly by reprogramming Schwann cells to stem cells/progenitor cells. We also discuss implications of this host cell reprogramming by leprosy bacilli as a model in a wider context.
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22
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da Silva Ferreira J, de Carvalho FM, Vidal Pessolani MC, de Paula Antunes JMA, de Medeiros Oliveira IVP, Ferreira Moura GH, Truman RW, Peña MT, Sharma R, Duthie MS, de Paula Souza E Guimarães RJ, Nogueira Brum Fontes A, NoelSuffys P, McIntosh D. Serological and molecular detection of infection with Mycobacterium leprae in Brazilian six banded armadillos (Euphractus sexcinctus). Comp Immunol Microbiol Infect Dis 2019; 68:101397. [PMID: 31775113 DOI: 10.1016/j.cimid.2019.101397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/10/2019] [Accepted: 11/14/2019] [Indexed: 10/25/2022]
Abstract
Leprosy was recognized as a zoonotic disease, associated with nine-banded armadillos (Dasypus novemcinctus) in the Southern United States of America in 2011. In addition, there is growing evidence to support a role for armadillos in zoonotic leprosy in South America. The current study evaluated twenty specimens of the six-banded armadillo (Euphractus sexcinctus), collected from rural locations in the state of Rio Grande do Norte (RN), Brazil for evidence of infection with Mycobacterium leprae. Serum was examined using two "in-house" enzyme-linked immunosorbent assays (ELISAs) and via two commercially available (ML flow and NDO-LID®) immunochromatographic lateral flow (LF) tests, for detection of the PGL-I and/or LID-1 antigens of the bacterium. The presence of M. leprae DNA in liver tissue was examined using the multi-copy, M. leprae-specific repetitive element (RLEP), as target in conventional and nested PCR assays. Molecular and anti-PGL-I-ELISA data indicated that 20/20 (100 %) of the armadillos were infected with M. leprae. The corresponding detection levels recorded with the LF tests were 17/20 (85 %) and 16/20 (85 %), for the NDO-LID® and ML flow tests, respectively. Our results indicate that, in common with D. novemcinctus, six banded armadillos (a species hunted and reared as a food-source in some regions of Brazil, including RN), represent a potential reservoir of M. leprae and as such, their role in a possible zoonotic cycle of leprosy within Brazil warrants further investigation.
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Affiliation(s)
- Jéssica da Silva Ferreira
- Multiuser Molecular Biology Laboratory, Department of Animal Parasitology, Institute of Veterinary Medicine, Federal Rural University of Rio de Janeiro, Seropédica, Brazil
| | | | | | | | | | | | - Richard Wayne Truman
- Department of Health and Humans Services, Health Resources and Services Administration, Healthcare Systems Bureau, National Hansen's Disease Program, Baton Rouge, United States
| | - Maria Teresa Peña
- Department of Health and Humans Services, Health Resources and Services Administration, Healthcare Systems Bureau, National Hansen's Disease Program, Baton Rouge, United States
| | - Rahul Sharma
- Department of Health and Humans Services, Health Resources and Services Administration, Healthcare Systems Bureau, National Hansen's Disease Program, Baton Rouge, United States
| | | | | | - Amanda Nogueira Brum Fontes
- Laboratory of Molecular Biology Applied to Mycobacteria, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Philip NoelSuffys
- Laboratory of Molecular Biology Applied to Mycobacteria, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Douglas McIntosh
- Multiuser Molecular Biology Laboratory, Department of Animal Parasitology, Institute of Veterinary Medicine, Federal Rural University of Rio de Janeiro, Seropédica, Brazil.
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23
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Oliveira IVPDM, Deps PD, Antunes JMADP. Armadillos and leprosy: from infection to biological model. Rev Inst Med Trop Sao Paulo 2019; 61:e44. [PMID: 31531622 PMCID: PMC6746198 DOI: 10.1590/s1678-9946201961044] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/05/2019] [Indexed: 11/22/2022] Open
Abstract
Mycobacterium leprae is the primary causative agent of Hansen’s disease or leprosy. Besides human beings, natural infection has been described in animals such as mangabey monkeys and armadillos. Leprosy is considered a global health problem and its complete pathogenesis is still unknown. As M. leprae does not grow in artificial media, armadillos have become the primary experimental model for leprosy, mimicking human disease including involvement of the peripheral nervous system. Leprosy transmission occurs through continuous and close contact of susceptible people with untreated infected people. However, unknown leprosy contact has been reported in leprosy-affected people, and contact with armadillos is a risk factor for leprosy. In the USA, leprosy is considered a zoonosis and this classification has recently been accepted in Brazil. This review presents information regarding the role of wild armadillos as a source of M. leprae for human infections, as well as the pathogenesis of leprosy.
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Affiliation(s)
| | - Patrícia Duarte Deps
- Universidade Federal do Espírito Santo, Departamento de Medicina Social, Vitória, Espírito Santo, Brazil
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24
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Sharma M, Akula D, Mohan M, Nigam R, Das M, Anindya R. Heteroexpression of Mycobacterium leprae hypothetical protein ML0190 provides protection against DNA-alkylating agent methyl methanesulfonate. Biochem Biophys Res Commun 2019; 509:779-783. [DOI: 10.1016/j.bbrc.2018.12.184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 12/30/2018] [Indexed: 01/15/2023]
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Ferreira JDS, Souza Oliveira DA, Santos JP, Ribeiro CCDU, Baêta BA, Teixeira RC, Neumann ADS, Rosa PS, Pessolani MCV, Moraes MO, Bechara GH, de Oliveira PL, Sorgine MHF, Suffys PN, Fontes ANB, Bell-Sakyi L, Fonseca AH, Lara FA. Ticks as potential vectors of Mycobacterium leprae: Use of tick cell lines to culture the bacilli and generate transgenic strains. PLoS Negl Trop Dis 2018; 12:e0007001. [PMID: 30566440 PMCID: PMC6326517 DOI: 10.1371/journal.pntd.0007001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 01/09/2019] [Accepted: 11/14/2018] [Indexed: 01/28/2023] Open
Abstract
Leprosy is an infectious disease caused by Mycobacterium leprae and frequently resulting in irreversible deformities and disabilities. Ticks play an important role in infectious disease transmission due to their low host specificity, worldwide distribution, and the biological ability to support transovarial transmission of a wide spectrum of pathogens, including viruses, bacteria and protozoa. To investigate a possible role for ticks as vectors of leprosy, we assessed transovarial transmission of M. leprae in artificially-fed adult female Amblyomma sculptum ticks, and infection and growth of M. leprae in tick cell lines. Our results revealed M. leprae RNA and antigens persisting in the midgut and present in the ovaries of adult female A. sculptum at least 2 days after oral infection, and present in their progeny (eggs and larvae), which demonstrates the occurrence of transovarial transmission of this pathogen. Infected tick larvae were able to inoculate viable bacilli during blood-feeding on a rabbit. Moreover, following inoculation with M. leprae, the Ixodes scapularis embryo-derived tick cell line IDE8 supported a detectable increase in the number of bacilli for at least 20 days, presenting a doubling time of approximately 12 days. As far as we know, this is the first in vitro cellular system able to promote growth of M. leprae. Finally, we successfully transformed a clinical M. leprae isolate by inserting the reporter plasmid pCHERRY3; transformed bacteria infected and grew in IDE8 cells over a 2-month period. Taken together, our data not only support the hypothesis that ticks may have the potential to act as a reservoir and/or vector of leprosy, but also suggest the feasibility of technological development of tick cell lines as a tool for large-scale production of M. leprae bacteria, as well as describing for the first time a method for their transformation. Leprosy is a slow-progressing and extremely debilitating disease; the armadillo is the only animal model able to mimic the symptoms observed in humans. In addition, the causative agent, Mycobacterium leprae, is not cultivable in vitro. Due to these constraints the chain of transmission is still not yet completely understood. We know, however, that at least two animals, armadillos in the Americas and red squirrels in the UK, are natural reservoirs of the bacillus, although their role in disease epidemiology is unclear. This information raised the following question: Can ticks carry leprosy from wild animals to humans? In the present study we demonstrated that artificially-infected female cayenne ticks are able to transmit the bacillus to their offspring, which were then able to transmit it to rabbits during bloodfeeding. We were able to grow M. leprae in vitro in a tick cell line for the first time. We also generated the first transgenic M. leprae strain, making the pathogen fluorescent in order to monitor its viability in real time. We believe that this new methodology will boost the screening of new drugs useful for control of leprosy, as well as improving understanding of how M. leprae causes disease.
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Affiliation(s)
- Jéssica da Silva Ferreira
- Lab. de Microbiologia Celular, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de janeiro, Brazil
| | | | - João Pedro Santos
- Lab. de Microbiologia Celular, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de janeiro, Brazil
| | - Carla Carolina Dias Uzedo Ribeiro
- Department of Animal Parasitology, Institute of Veterinary Medicine, Federal Rural University of Rio de Janeiro, Rio de janeiro, Brazil
| | - Bruna A. Baêta
- Department of Animal Parasitology, Institute of Veterinary Medicine, Federal Rural University of Rio de Janeiro, Rio de janeiro, Brazil
| | - Rafaella Câmara Teixeira
- Department of Animal Parasitology, Institute of Veterinary Medicine, Federal Rural University of Rio de Janeiro, Rio de janeiro, Brazil
| | - Arthur da Silva Neumann
- Lab. de Microbiologia Celular, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de janeiro, Brazil
| | | | | | - Milton Ozório Moraes
- Lab. de Hanseníase, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de janeiro, Brazil
| | - Gervásio Henrique Bechara
- School of Agricultural Sciences and Veterinary Medicine, Pontifical Catholic University of Parana, Curitiba, Brazil
| | - Pedro L. de Oliveira
- Lab. de Bioquímica de Artrópodes Hematófagos, Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos Henrique Ferreira Sorgine
- Lab. de Bioquímica de Artrópodes Hematófagos, Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Philip Noel Suffys
- Lab. de Biologia Molecular Aplicada a Micobactérias, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Amanda Nogueira Brum Fontes
- Lab. de Biologia Molecular Aplicada a Micobactérias, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Lesley Bell-Sakyi
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Adivaldo H. Fonseca
- Department of Animal Parasitology, Institute of Veterinary Medicine, Federal Rural University of Rio de Janeiro, Rio de janeiro, Brazil
| | - Flavio Alves Lara
- Lab. de Microbiologia Celular, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de janeiro, Brazil
- * E-mail:
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Abstract
Humans encounter mycobacterial species due to their ubiquity in different environmental niches. In many individuals, pathogenic mycobacterial species may breach our first-line barrier defenses of the innate immune system and modulate the activation of phagocytes to cause disease of the respiratory tract or the skin and soft tissues, sometimes resulting in disseminated infection. Cutaneous mycobacterial infections may cause a wide range of clinical manifestations, which are divided into four main disease categories: (i) cutaneous manifestations of Mycobacterium tuberculosis infection, (ii) Buruli ulcer caused by Mycobacterium ulcerans and other related slowly growing mycobacteria, (iii) leprosy caused by Mycobacterium leprae and Mycobacterium lepromatosis, and (iv) cutaneous infections caused by rapidly growing mycobacteria. Clinically, cutaneous mycobacterial infections present with widely different clinical presentations, including cellulitis, nonhealing ulcers, subacute or chronic nodular lesions, abscesses, superficial lymphadenitis, verrucous lesions, and other types of findings. Mycobacterial infections of the skin and subcutaneous tissue are associated with important stigma, deformity, and disability. Geography-based environmental exposures influence the epidemiology of cutaneous mycobacterial infections. Cutaneous tuberculosis exhibits different clinical phenotypes acquired through different routes, including via extrinsic inoculation of the tuberculous bacilli and dissemination to the skin from other sites, or represents hypersensitivity reactions to M. tuberculosis infection. In many settings, leprosy remains an important cause of neurological impairment, deformity, limb loss, and stigma. Mycobacterium lepromatosis, a mycobacterial species related to M. leprae, is linked to diffuse lepromatous leprosy of Lucio and Latapí. Mycobacterium ulcerans produces a mycolactone toxin that leads to subcutaneous tissue destruction and immunosuppression, resulting in deep ulcerations that often produce substantial disfigurement and disability. Mycobacterium marinum, a close relative of M. ulcerans, is an important cause of cutaneous sporotrichoid nodular lymphangitic lesions. Among patients with advanced immunosuppression, Mycobacterium kansasii, the Mycobacterium avium-intracellulare complex, and Mycobacterium haemophilum may cause cutaneous or disseminated disease. Rapidly growing mycobacteria, including the Mycobacterium abscessus group, Mycobacterium chelonei, and Mycobacterium fortuitum, are increasingly recognized pathogens in cutaneous infections associated particularly with plastic surgery and cosmetic procedures. Skin biopsies of cutaneous lesions to identify acid-fast staining bacilli and cultures represent the cornerstone of diagnosis. Additionally, histopathological evaluation of skin biopsy specimens may be useful in identifying leprosy, Buruli ulcer, and cutaneous tuberculosis. Molecular assays are useful in some cases. The treatment for cutaneous mycobacterial infections depends on the specific pathogen and therefore requires a careful consideration of antimicrobial choices based on official treatment guidelines.
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Saleem MD, Oussedik E, Picardo M, Schoch JJ. Acquired disorders with hypopigmentation: A clinical approach to diagnosis and treatment. J Am Acad Dermatol 2018; 80:1233-1250.e10. [PMID: 30236514 DOI: 10.1016/j.jaad.2018.07.070] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 07/09/2018] [Accepted: 07/13/2018] [Indexed: 02/07/2023]
Abstract
Acquired hypopigmented skin changes are commonly encountered by dermatologists. Although hypopigmentation is often asymptomatic and benign, occasional serious and disabling conditions present with cutaneous hypopigmentation. A thorough history and physical examination, centered on disease distribution and morphologic findings, can aid in delineating the causes of acquired hypopigmented disorders. The second article in this 2-part continuing medical education series focuses on conditions with a hypopigmented phenotype. Early diagnosis and appropriate management of these disorders can improve a patient's quality of life, halt disease progression, and prevent irreversible disability.
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Affiliation(s)
- Mohammed D Saleem
- Department of Internal Medicine, University of Florida College of Medicine and University of Florida Health, Gainesville, Florida.
| | | | - Mauro Picardo
- Department of Dermatology and Pediatric Dermatology, Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatologic Institute, IRCCS, Rome, Italy
| | - Jennifer J Schoch
- Department of Dermatology, University of Florida, Gainesville, Florida; Department of Pediatrics, University of Florida, Gainesville, Florida
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Franco-Paredes C, Chastain DB, Allen L, Henao-Martínez AF. Overview of Cutaneous Mycobacterial Infections. CURRENT TROPICAL MEDICINE REPORTS 2018; 5:228-232. [PMID: 34164254 DOI: 10.1007/s40475-018-0161-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Purpose of Review Mycobacterial infections may affect any human organ and produce disseminated disease in immunocompromised individuals. Their most common clinical presentations include pulmonary, cutaneous (skin and soft tissues), and disseminated forms. The skin and soft tissues are frequent targets of affection by mycobacterial pathogens manifesting as localized or diffuse disease. Recent Findings Overall, infections due to Mycobacterium leprae, Mycobacterium ulcerans, and Mycobacterium tuberculosis are the most frequently recognized mycobacterial pathogens involving the skin and soft tissues. Additionally, all mycobacterial species of the nontuberculous group may also produce cutaneous disease. Of these, the most commonly identified organisms causing localized infections of the skin and subcutaneous tissues are the rapidly growing species (Mycobacterium fortuitum, Mycobacterium chelonae, and Mycobacterium abscessus complex), Mycobacterium marinum, and M. ulcerans. Since the skin and soft tissues are important protective barriers for environmental pathogens, their disruption often represents the portal of entry of nontuberculous environmental mycobacteria (soil, natural water systems, engineered water networks, etc.). Additionally, some mycobacterial diseases affecting cutaneous structures occur after exposure to infected animals or their products (i.e., Mycobacterium bovis). Mycobacterial infections of the skin and soft tissues may manifest with a broad range of clinical phenotypes such as cellulitis, single or multiple abscesses, subacute or chronic nodular lesions, macules, superficial lymphadenitis, plaques, nonhealing ulcers, necrotic plaques, verrucous lesions, and many other dermatologic manifestations. Summary Geography and environmental exposure play an important role in the epidemiology of cutaneous mycobacterial infections. Mycobacterial infection of the skin and subcutaneous tissue is an important cause of human suffering in terms of morbidity, deformity, dysfunction, and stigma. The diagnosis of cutaneous mycobacterial infections is challenging requiring a low threshold of clinical suspicion for obtaining skin biopsies of cutaneous lesions for acid-fast staining and cultures, and molecular probe assays to detect the presence of mycobacterial pathogens. The choice of antibacterial therapy combinations and length of therapy for cutaneous mycobacterial infections is species-specific.
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Affiliation(s)
- Carlos Franco-Paredes
- Division of Infectious Diseases, University of Colorado Denver, Anschutz Medical Campus, Denver, CO, USA.,Hospital Infantil de México, Federico Gómez, México City, Mexico.,Infectious Diseases Group Practice, University of Colorado Hospital, 1635 Aurora Court, Mail Stop B-163, Aurora, CO 80045, USA
| | - Daniel B Chastain
- Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Albany, GA, USA
| | - Lorna Allen
- Division of Infectious Diseases, University of Colorado Denver, Anschutz Medical Campus, Denver, CO, USA.,Infectious Diseases Group Practice, University of Colorado Hospital, 1635 Aurora Court, Mail Stop B-163, Aurora, CO 80045, USA
| | - Andrés F Henao-Martínez
- Division of Infectious Diseases, University of Colorado Denver, Anschutz Medical Campus, Denver, CO, USA.,Infectious Diseases Group Practice, University of Colorado Hospital, 1635 Aurora Court, Mail Stop B-163, Aurora, CO 80045, USA
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Evidence of zoonotic leprosy in Pará, Brazilian Amazon, and risks associated with human contact or consumption of armadillos. PLoS Negl Trop Dis 2018; 12:e0006532. [PMID: 29953440 PMCID: PMC6023134 DOI: 10.1371/journal.pntd.0006532] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/15/2018] [Indexed: 11/19/2022] Open
Abstract
Mycobacterium leprae (M. leprae) is a human pathogen and the causative agent for leprosy, a chronic disease characterized by lesions of the skin and peripheral nerve damage. Zoonotic transmission of M. leprae to humans by nine-banded armadillos (Dasypus novemcinctus) has been shown to occur in the southern United States, mainly in Texas, Louisiana, and Florida. Nine-banded armadillos are also common in South America, and residents living in some areas in Brazil hunt and kill armadillos as a dietary source of protein. This study examines the extent of M. leprae infection in wild armadillos and whether these New World mammals may be a natural reservoir for leprosy transmission in Brazil, similar to the situation in the southern states of the U.S. The presence of the M. leprae-specific repetitive sequence RLEP was detected by PCR amplification in purified DNA extracted from armadillo spleen and liver tissue samples. A positive RLEP signal was confirmed in 62% of the armadillos (10/16), indicating high rates of infection with M. leprae. Immunohistochemistry of sections of infected armadillo spleens revealed mycobacterial DNA and cell wall constituents in situ detected by SYBR Gold and auramine/rhodamine staining techniques, respectively. The M. leprae-specific antigen, phenolic glycolipid I (PGL-I) was detected in spleen sections using a rabbit polyclonal antibody specific for PGL-I. Anti-PGL-I titers were assessed by ELISA in sera from 146 inhabitants of Belterra, a hyperendemic city located in western Pará state in Brazil. A positive anti-PGL-I titer is a known biomarker for M. leprae infection in both humans and armadillos. Individuals who consumed armadillo meat most frequently (more than once per month) showed a significantly higher anti-PGL-I titer than those who did not eat or ate less frequently than once per month. Armadillos infected with M. leprae represent a potential environmental reservoir. Consequently, people who hunt, kill, or process or eat armadillo meat are at a higher risk for infection with M. leprae from these animals.
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Pekkarinen H, Airas N, Savolainen LE, Rantala M, Kilpinen S, Miuku O, Speeti M, Karkamo V, Malkamäki S, Vaara M, Sukura A, Syrjä P. Non-tuberculous Mycobacteria can Cause Disseminated Mycobacteriosis in Cats. J Comp Pathol 2018; 160:1-9. [PMID: 29729715 PMCID: PMC7094269 DOI: 10.1016/j.jcpa.2018.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 01/11/2018] [Accepted: 02/21/2018] [Indexed: 11/30/2022]
Abstract
Mycobacteriosis caused by non-tuberculous mycobacteria (NTM) is a rising concern in human medicine both in immunocompromised and immunocompetent patients. In cats, mycobacteriosis caused by NTM is considered mostly to be a focal or dermal infection, with disseminated disease mostly caused by Mycobacterium avium. We describe three cases of disseminated mycobacteriosis in cats, caused by Mycobacterium malmoense, Mycobacterium branderi/shimoidei and M. avium, with no identified underlying immunosuppression. In all cases, extracellular mycobacteria were seen in the pulmonary epithelium, intestinal lumen and glomerular tufts, which could affect the shedding of the organism. The present study highlights the importance of mycobacteriosis as a differential even in immunocompetent animals. Considering the close relationship of owners and pets and the potential presence of free mycobacteria in secretions, cats should be considered as a possible environmental reservoir for mycobacteria.
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Affiliation(s)
- H Pekkarinen
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, PO Box 66, University of Helsinki, Finland.
| | - N Airas
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, PO Box 66, University of Helsinki, Finland
| | - L E Savolainen
- Department of Clinical Microbiology, University of Helsinki and Helsinki University Hospital, HUSLAB, Finland
| | - M Rantala
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, PO Box 57, University of Helsinki, Finland
| | - S Kilpinen
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, PO Box 57, University of Helsinki, Finland
| | - O Miuku
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, PO Box 57, University of Helsinki, Finland
| | - M Speeti
- Herttoniemi Veterinary Clinic, Hiihtomäentie 35, Finland
| | - V Karkamo
- Pathology Research Unit, Finnish Food Safety Authority Evira, Mustialankatu 3, Helsinki, Finland
| | - S Malkamäki
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, PO Box 66, University of Helsinki, Finland
| | - M Vaara
- Department of Clinical Microbiology, University of Helsinki and Helsinki University Hospital, HUSLAB, Finland
| | - A Sukura
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, PO Box 66, University of Helsinki, Finland
| | - P Syrjä
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, PO Box 66, University of Helsinki, Finland
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Arraes MLBDM, Holanda MVD, Lima LNGC, Sabadia JAB, Duarte CR, Almeida RLF, Kendall C, Kerr LRS, Frota CC. Natural environmental water sources in endemic regions of northeastern Brazil are potential reservoirs of viable Mycobacterium leprae. Mem Inst Oswaldo Cruz 2017; 112:805-811. [PMID: 29211240 PMCID: PMC5719548 DOI: 10.1590/0074-02760170117] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/30/2017] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND The detection of live Mycobacterium leprae in soil and animals other than humans suggests that the environment plays a role in the transmission of leprosy. OBJECTIVE The objective of this study was to investigate the presence of viable M. leprae in natural water sources used by the local population in five municipalities in the state of Ceará, northeastern Brazil. METHODS Samples were collected from 30 different sources. Viable bacilli were identified by reverse transcriptase polymerase chain reaction (PCR) of the M. leprae gyrA gene and sequencing of the PCR products. Physicochemical properties of each water source were also assessed. FINDINGS M. leprae gyrA mRNA was found in 23 (76.7%) of the water sources. No association was found between depth of the water and sample positivity, nor was there any association between the type of water used by the population and sample positivity. An association between viable M. leprae and temperature and pH was found. Georeferencing showed a relation between the residences of leprosy cases and water source containing the bacterium. MAIN CONCLUSIONS The finding of viable M. leprae in natural water sources associated with human contact suggests that the environment plays an important role in maintaining endemic leprosy in the study region.
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Affiliation(s)
| | - Maísa Viana de Holanda
- Universidade Federal do Ceará, Faculdade de Medicina, Departamento de Patologia e Medicina Legal, Fortaleza, CE, Brasil
| | | | | | | | | | - Carl Kendall
- Tulane University, School of Public Health and Tropical Medicine, Department of Global Community Health and Behavioral Sciences, New Orleans, LA, USA
| | - Ligia Regina Sansigolo Kerr
- Universidade Federal do Ceará, Faculdade de Medicina, Departamento de Saúde Comunitária, Fortaleza, CE, Brasil
| | - Cristiane Cunha Frota
- Universidade Federal do Ceará, Faculdade de Medicina, Departamento de Patologia e Medicina Legal, Fortaleza, CE, Brasil
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Yoshida N, Frickel EM, Mostowy S. Macrophage-Microbe Interactions: Lessons from the Zebrafish Model. Front Immunol 2017; 8:1703. [PMID: 29250076 PMCID: PMC5717010 DOI: 10.3389/fimmu.2017.01703] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 11/20/2017] [Indexed: 12/18/2022] Open
Abstract
Macrophages provide front line defense against infections. The study of macrophage-microbe interplay is thus crucial for understanding pathogenesis and infection control. Zebrafish (Danio rerio) larvae provide a unique platform to study macrophage-microbe interactions in vivo, from the level of the single cell to the whole organism. Studies using zebrafish allow non-invasive, real-time visualization of macrophage recruitment and phagocytosis. Furthermore, the chemical and genetic tractability of zebrafish has been central to decipher the complex role of macrophages during infection. Here, we discuss the latest developments using zebrafish models of bacterial and fungal infection. We also review novel aspects of macrophage biology revealed by zebrafish, which can potentiate development of new therapeutic strategies for humans.
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Affiliation(s)
- Nagisa Yoshida
- Host-Toxoplasma Interaction Laboratory, The Francis Crick Institute, London, United Kingdom
- Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Eva-Maria Frickel
- Host-Toxoplasma Interaction Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Serge Mostowy
- Section of Microbiology, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
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Fonseca CMB, da Silva ABS, Cavalcante MMADS, de Oliveira IM, Moura SMS, Cunha BM, Leite CMDC, de Carvalho MAM, Moura WRDA, Rizzo MDS, Conde Júnior AM. Morphology of laryngeal cartilage of the nine-banded armadillo (Dasypus novemcinctus
) Linnaeus, 1758. Microsc Res Tech 2017; 80:1089-1095. [DOI: 10.1002/jemt.22904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/30/2017] [Accepted: 06/13/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Clarisse Maria Barbosa Fonseca
- Department of Morphology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | - Andrezza Braga Soares da Silva
- Department of Morphology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | | | - Ingrid Macedo de Oliveira
- Department of Morphology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | - Selma Maria Santos Moura
- Department of Morphology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | - Bruno Melo Cunha
- Department of Morphology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | - Carla Maria de Carvalho Leite
- Department of Morphology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | - Maria Acelina Martins de Carvalho
- Department of Veterinary Morphology; Center of Agrarian Sciences, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | - Waldilleny Ribeiro de Araújo Moura
- Departamento of Biophysics and Physiology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | - Márcia dos Santos Rizzo
- Department of Morphology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
| | - Airton Mendes Conde Júnior
- Department of Morphology; Health Sciences Center, Federal University of Piaui, Minister Petrônio Portela Campus; CEP: 64059-550 Teresina Piauí Brazil
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Abstract
This chapter provides an introduction to animals that are commonly used for research. It presents information on basic care topics such as biology, behavior, housing, feeding, sexing, and breeding of these animals. The chapter provides some insight into the reasons why these animals are used in research. It also gives an overview of techniques that can be utilized to collect blood or to administer drugs or medicine. Each section concludes with a brief description of how to recognize abnormal signs, in addition to lists of various diseases.
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Campos LB, Peixoto GCX, Lima GL, Castelo TS, Silva AM, Freitas CIA, Silva AR. Monitoring the reproductive physiology of six-banded armadillos ( Euphractus sexcinctus, Linnaeus, 1758) through different techniques. Reprod Domest Anim 2016; 51:736-42. [DOI: 10.1111/rda.12738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 06/21/2016] [Indexed: 11/28/2022]
Affiliation(s)
- LB Campos
- Laboratory of Animal Germplasm Conservation (LCGA); Universidade Federal Rural Do Semi-Árido (UFERSA); Mossoró Brazil
| | - GCX Peixoto
- Laboratory of Animal Germplasm Conservation (LCGA); Universidade Federal Rural Do Semi-Árido (UFERSA); Mossoró Brazil
| | - GL Lima
- Laboratory of Animal Germplasm Conservation (LCGA); Universidade Federal Rural Do Semi-Árido (UFERSA); Mossoró Brazil
| | - TS Castelo
- Laboratory of Animal Germplasm Conservation (LCGA); Universidade Federal Rural Do Semi-Árido (UFERSA); Mossoró Brazil
| | - AM Silva
- Laboratory of Animal Germplasm Conservation (LCGA); Universidade Federal Rural Do Semi-Árido (UFERSA); Mossoró Brazil
| | - CIA Freitas
- Laboratory of Animal Germplasm Conservation (LCGA); Universidade Federal Rural Do Semi-Árido (UFERSA); Mossoró Brazil
| | - AR Silva
- Laboratory of Animal Germplasm Conservation (LCGA); Universidade Federal Rural Do Semi-Árido (UFERSA); Mossoró Brazil
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Franco-Paredes C, Rodriguez-Morales AJ. Unsolved matters in leprosy: a descriptive review and call for further research. Ann Clin Microbiol Antimicrob 2016; 15:33. [PMID: 27209077 PMCID: PMC4875741 DOI: 10.1186/s12941-016-0149-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 05/11/2016] [Indexed: 10/25/2022] Open
Abstract
Leprosy, a chronic mycobacterial infection caused by Mycobacterium leprae, is an infectious disease that has ravaged human societies throughout millennia. This ancestral pathogen causes disfiguring cutaneous lesions, peripheral nerve injury, ostearticular deformity, limb loss and dysfunction, blindness and stigma. Despite ongoing efforts in interrupting leprosy transmission, large numbers of new cases are persistently identified in many endemic areas. Moreover, at the time of diagnosis, most newly identified cases have considerable neurologic disability. Many challenges remain in our understanding of the epidemiology of leprosy including: (a) the precise mode and route of transmission; (b) the socioeconomic, environmental, and behavioral factors that promote its transmission; and
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Affiliation(s)
- Carlos Franco-Paredes
- Infectious Diseases Clinic, Phoebe Putney Memorial Hospital, 507 3rd Avenue, Albany, GA, 31721, USA. .,Hospital Infantil de México, Federico Gómez, Mexico D.F., Mexico.
| | - Alfonso J Rodriguez-Morales
- Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia
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Leprosy—An intriguing disease. Clin Dermatol 2015; 33:1-2. [DOI: 10.1016/j.clindermatol.2014.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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