1
|
Boigny RN, de Sousa Cavalcante KK, Florencio CMGD, Nogueira PSF, Gomes CM, Alencar CH. Temporal trends and space-time distribution of leprosy relapse in Brazil from 2001 to 2021. Trans R Soc Trop Med Hyg 2024; 118:537-549. [PMID: 38708714 DOI: 10.1093/trstmh/trae021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 02/20/2024] [Accepted: 03/21/2024] [Indexed: 05/07/2024] Open
Abstract
BACKGROUND To analyse the temporal trends and spatiotemporal distribution of leprosy relapse in Brazil from 2001 to 2021. METHODS An ecological study with a temporal trend approach and space-time analysis of leprosy relapse in Brazil was carried out with data from the Notifiable Diseases Information System. RESULTS A total of 31 334 patients who experienced leprosy relapse were identified. The number of recurrent cases tended to increase throughout the study period, and this increase was significant among females and in almost all age groups, except for those <15, 50-59 and ≥70 y. Several clusters of high- and low-risk patients were identified across all regions with a heterogeneous distribution. CONCLUSIONS The burden of relapse showed an increasing trend in some groups and was distributed in all regions.
Collapse
Affiliation(s)
- Reagan Nzundu Boigny
- Federal University of Ceará, Faculty of Medicine, Postgraduate Program in Public Health, Prof. Costa Mendes street, 1608th - 5° Floor - Rodolfo Teófilo, Fortaleza, CE 60430-140, Brazil
| | - Kellyn Kessiene de Sousa Cavalcante
- Federal University of Ceará, Faculty of Medicine, Postgraduate Program in Public Health, Prof. Costa Mendes street, 1608th - 5° Floor - Rodolfo Teófilo, Fortaleza, CE 60430-140, Brazil
| | - Caroline Mary Gurgel Dias Florencio
- Federal University of Ceará, Faculty of Medicine, Postgraduate Program in Public Health, Prof. Costa Mendes street, 1608th - 5° Floor - Rodolfo Teófilo, Fortaleza, CE 60430-140, Brazil
| | - Paula Sacha Frota Nogueira
- Federal University of Ceará, Faculty of Pharmacy, Dentistry and Nursing, Department of Nursing, Alexandre Baraúna street, 1115th - Rodolfo Teófilo, Fortaleza, CE 60430-160, Brazil
| | - Ciro Martins Gomes
- University of Brasília, Faculty of Medicine, Postgraduate Program in Medical Sciences, Campus Universitário Darcy Ribeiro, Brasília-DF, 70910-900, Brazil
| | - Carlos Henrique Alencar
- Federal University of Ceará, Faculty of Medicine, Postgraduate Program in Public Health, Prof. Costa Mendes street, 1608th - 5° Floor - Rodolfo Teófilo, Fortaleza, CE 60430-140, Brazil
- Federal University of Ceará, Faculty of Medicine, Postgraduate Program in Pathology, Alexandre Baraúna street, 949 - Rodolfo Teófilo, Fortaleza, CE 60430-160, Brazil
| |
Collapse
|
2
|
de Alecrin ES, Martins MAP, de Oliveira ALG, Lyon S, Lages ATC, Reis IA, Pereira FH, Oliveira D, Goulart IMB, da Costa Rocha MO. Models for predicting the risk of illness in leprosy contacts in Brazil: Leprosy prediction models in Brazilian contacts. Trop Med Int Health 2024; 29:680-696. [PMID: 38961761 DOI: 10.1111/tmi.14020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
OBJECTIVE This study aims to develop and validate predictive models that assess the risk of leprosy development among contacts, contributing to an enhanced understanding of disease occurrence in this population. METHODS A cohort of 600 contacts of people with leprosy treated at the National Reference Center for Leprosy and Health Dermatology at the Federal University of Uberlândia (CREDESH/HC-UFU) was followed up between 2002 and 2022. The database was divided into two parts: two-third to construct the disease risk score and one-third to validate this score. Multivariate logistic regression models were used to construct the disease score. RESULTS Of the four models constructed, model 3, which included the variables anti-phenolic glycolipid I immunoglobulin M positive, absence of Bacillus Calmette-Guérin vaccine scar and age ≥60 years, was considered the best for identifying a higher risk of illness, with a specificity of 89.2%, a positive predictive value of 60% and an accuracy of 78%. CONCLUSIONS Risk prediction models can contribute to the management of leprosy contacts and the systematisation of contact surveillance protocols.
Collapse
Affiliation(s)
- Edilamar Silva de Alecrin
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Fundação Hospitalar do Estado de Minas Gerais, Hospital Eduardo de Menezes Hospital, Belo Horizonte, Minas Gerais, Brazil
| | - Maria Auxiliadora Parreiras Martins
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ana Laura Grossi de Oliveira
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sandra Lyon
- Fundação Hospitalar do Estado de Minas Gerais, Hospital Eduardo de Menezes Hospital, Belo Horizonte, Minas Gerais, Brazil
- Curso de Medicina, Faculdade de Saúde e Ecologia Humana, Belo Horizonte, Minas Gerais, Brazil
| | - Ana Thereza Chaves Lages
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ilka Afonso Reis
- Departamento de Estatística, Instituto de ciências exatas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Fernando Henrique Pereira
- Pró-Reitoria de Graduação, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Dulcinea Oliveira
- Centro de Referência Nacional em Dermatologia Sanitária e Hanseníase, Hospital das Clínicas, Universidade Federal de Uberlândia (UFU/EBSERH), Uberlândia, Minas Gerais, Brazil
| | - Isabela Maria Bernardes Goulart
- Centro de Referência Nacional em Dermatologia Sanitária e Hanseníase, Hospital das Clínicas, Universidade Federal de Uberlândia (UFU/EBSERH), Uberlândia, Minas Gerais, Brazil
- Departamento de Clínica Médica, Faculdade de Medicina, Universidade Federal de Uberlândia Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Manoel Otávio da Costa Rocha
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Clínica Médica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| |
Collapse
|
3
|
Pelser S, Geluk A, Vissers WHPM, Knijn N, van Hees CLM, Hassing RJ. A case of leprosy in an immunocompromised traveller. J Travel Med 2024; 31:taae060. [PMID: 38602709 DOI: 10.1093/jtm/taae060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/02/2024] [Accepted: 04/09/2024] [Indexed: 04/12/2024]
Abstract
We describe a case of leprosy in an immunocompromised Dutch male whose parents were born in a leprosy-endemic country. The use of immunosuppressive drugs in Mycobacterium leprae infected individuals therefore increases the risk of development of leprosy. Exposure and infection at a young age through his parents is another possible risk factor.
Collapse
Affiliation(s)
- Sille Pelser
- Department of Internal Medicine, Rijnstate Hospital Arnhem, Wagnerlaan 55, 6815AD, Arnhem, The Netherlands
| | - Annemieke Geluk
- Department of Infectious Diseases, Leiden University Medical Center, Albinusdreef 2, 2333 AZ Leiden, The Netherlands
- Erasmus MC/LUMC Leprosy Center of Expertise, The Netherlands
| | - Wynand H P M Vissers
- Department of Dermatology, Rijnstate Hospital Arnhem, Wagnerlaan 55, 6815 AD, Arnhem, The Netherlands
| | - Nikki Knijn
- Department of Pathology, Rijnstate Hospital Arnhem, Wagnerlaan 55, 6815 AD, Arnhem, The Netherlands
| | - Colette L M van Hees
- Erasmus MC/LUMC Leprosy Center of Expertise, The Netherlands
- Department of Dermatology, Erasmus Medical Centre Rotterdam, dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Robert-Jan Hassing
- Department of Internal Medicine, Rijnstate Hospital Arnhem, Wagnerlaan 55, 6815AD, Arnhem, The Netherlands
| |
Collapse
|
4
|
Poulton NC, DeJesus MA, Munsamy-Govender V, Kanai M, Roberts CG, Azadian ZA, Bosch B, Lin KM, Li S, Rock JM. Beyond antibiotic resistance: The whiB7 transcription factor coordinates an adaptive response to alanine starvation in mycobacteria. Cell Chem Biol 2024; 31:669-682.e7. [PMID: 38266648 PMCID: PMC11031301 DOI: 10.1016/j.chembiol.2023.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 11/13/2023] [Accepted: 12/23/2023] [Indexed: 01/26/2024]
Abstract
Pathogenic mycobacteria are a significant cause of morbidity and mortality worldwide. The conserved whiB7 stress response reduces the effectiveness of antibiotic therapy by activating several intrinsic antibiotic resistance mechanisms. Despite our comprehensive biochemical understanding of WhiB7, the complex set of signals that induce whiB7 expression remain less clear. We employed a reporter-based, genome-wide CRISPRi epistasis screen to identify a diverse set of 150 mycobacterial genes whose inhibition results in constitutive whiB7 expression. We show that whiB7 expression is determined by the amino acid composition of the 5' regulatory uORF, thereby allowing whiB7 to sense amino acid starvation. Although deprivation of many amino acids can induce whiB7, whiB7 specifically coordinates an adaptive response to alanine starvation by engaging in a feedback loop with the alanine biosynthetic enzyme, aspC. These findings describe a metabolic function for whiB7 and help explain its evolutionary conservation across mycobacterial species occupying diverse ecological niches.
Collapse
Affiliation(s)
- Nicholas C Poulton
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA
| | - Michael A DeJesus
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA
| | | | - Mariko Kanai
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA
| | - Cameron G Roberts
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA
| | - Zachary A Azadian
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA
| | - Barbara Bosch
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA
| | - Karl Matthew Lin
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA
| | - Shuqi Li
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA
| | - Jeremy M Rock
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, NY, USA.
| |
Collapse
|
5
|
Antony BS, Nagarajan C, Devaraj DV, Subbaraj GK. A Systemic Review and Meta-analysis on Natural Resistance-associated Macrophage Protein 1 (3'-Untranslated Region) and Nucleotide-binding Oligomerization Domain-2 (rs8057341) Polymorphisms and Leprosy Susceptibility in Asian and Caucasian Populations. Int J Mycobacteriol 2024; 13:115-125. [PMID: 38916380 DOI: 10.4103/ijmy.ijmy_43_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 05/15/2024] [Indexed: 06/26/2024] Open
Abstract
The current meta-analysis aims to explore the potential correlation between natural resistance-associated macrophage protein 1 (NRAMP1) (3'-Untranslated region [3'-UTR]) and nucleotide-binding oligomerization domain-2 (NOD2 [rs8057341]) gene polymorphisms and their association with leprosy susceptibility in both Asian and Caucasian populations. Datas were retrieved from case control studies with NOD 2 and NRAMP 1 gene polymorphism associated with leprosy disease. Leprosy emerges as a particularly distinctive ailment among women on a global scale. The NRAMP1 (3'-UTR) and NOD2 (rs8057341) genetic variations play a crucial role in the progression of leprosy. A systematic review of relevant case-control studies was conducted across several databases, including ScienceDirect, PubMed, Google Scholar, and Embase. Utilizing MetaGenyo and Review Manager 5.4 Version, statistical analyses were carried out. Nine case-control studies totaling 3281 controls and 3062 leprosy patients are included in the research, with the objective of examining the potential association between NRAMP1 (3'-UTR) and NOD2 (rs8057341) gene polymorphisms and leprosy risk. The review methodology was registered in PROSPERO (ID520883). The findings reveal a robust association between NRAMP1 (3'-UTR) and NOD2 (rs8057341) gene polymorphisms and leprosy risk across various genetic models. Although the funnel plot analysis did not identify publication bias, bolstering these findings and elucidating potential gene-gene and gene-environment interactions require further comprehensive epidemiological research. This study identified a strong correlation between polymorphisms in the NOD2 (rs8057341) genes and susceptibility to leprosy across two genetic models. Further comprehensive epidemiological investigations are warranted to validate these findings and explore potential interactions between these genes and environmental factors.
Collapse
Affiliation(s)
- Bibin Savio Antony
- Department of Medical Genetics, Faculty of Allied Health Science, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu, India
| | - Chitra Nagarajan
- Department of Microbiology, Sri Venkateswara Dental College and Hospital, Chennai, Tamil Nadu, India
| | - Danis Vijay Devaraj
- Department of Microbiology, Karpaga Vinayaga Institute of Medical Sciences and Research Centre, Chengalpattu, Tamil Nadu, India
| | - Gowtham Kumar Subbaraj
- Department of Medical Genetics, Faculty of Allied Health Science, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu, India
| |
Collapse
|
6
|
Rajani AJ, Raval DM, Chitale RA, Kempaiah P, Elwasila SM, Durvasula R, Oring J. Half a Century in Hiding: A Unique Case of Tuberculoid Leprosy with an Unprecedented Incubation Period. AMERICAN JOURNAL OF CASE REPORTS 2024; 25:e942048. [PMID: 38351602 PMCID: PMC10877640 DOI: 10.12659/ajcr.942048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 01/02/2024] [Accepted: 12/20/2023] [Indexed: 02/16/2024]
Abstract
BACKGROUND Leprosy, also known as Hansen's disease, is a neglected tropical disease with low prevalence in the United States. The disease's long incubation period can cause delayed presentation, and most affected individuals have a history of travel or work in leprosy-endemic regions. The immune response to Mycobacterium leprae determines the clinical characteristics of leprosy, with tuberculoid leprosy being characterized by well-defined granulomas and involvement of peripheral nerves. The recommended treatment is a combination of dapsone and rifampin for 12 months. CASE REPORT A 78-year-old man with a history of extensive travel to Africa and Asia 50 years ago, presented with a non-tender, non-pruritic, and hypopigmented skin lesion on his left knee. Biopsy results confirmed granulomatous inflammation and the presence of Mycobacterium leprae, leading to a diagnosis of tuberculoid/paucibacillary leprosy. The patient received dapsone and rifampin treatment, which resulted in symptom improvement. CONCLUSIONS The patient's long incubation period of 50 years between exposure and symptom onset is remarkable and possibly one of the longest reported for tuberculoid leprosy. It emphasizes the importance of considering leprosy in cases with an extensive travel history and long incubation periods. Our patient's case presented contradictory staining results, suggesting potential sampling variation or a rare mixed leprosy form. Based on his clinical findings, he was diagnosed with tuberculoid leprosy. Early diagnosis and treatment are crucial to prevent irreversible nerve damage and improve patient outcomes. Healthcare providers should be vigilant in acquiring a detailed travel history to facilitate early diagnosis and appropriate management of leprosy cases.
Collapse
|
7
|
Fernandes JRN, Teles AS, Fernandes TRS, Lima LDB, Balhara S, Gupta N, Teixeira S. Artificial Intelligence on Diagnostic Aid of Leprosy: A Systematic Literature Review. J Clin Med 2023; 13:180. [PMID: 38202187 PMCID: PMC10779723 DOI: 10.3390/jcm13010180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024] Open
Abstract
Leprosy is a neglected tropical disease that can cause physical injury and mental disability. Diagnosis is primarily clinical, but can be inconclusive due to the absence of initial symptoms and similarity to other dermatological diseases. Artificial intelligence (AI) techniques have been used in dermatology, assisting clinical procedures and diagnostics. In particular, AI-supported solutions have been proposed in the literature to aid in the diagnosis of leprosy, and this Systematic Literature Review (SLR) aims to characterize the state of the art. This SLR followed the preferred reporting items for systematic reviews and meta-analyses (PRISMA) framework and was conducted in the following databases: ACM Digital Library, IEEE Digital Library, ISI Web of Science, Scopus, and PubMed. Potentially relevant research articles were retrieved. The researchers applied criteria to select the studies, assess their quality, and perform the data extraction process. Moreover, 1659 studies were retrieved, of which 21 were included in the review after selection. Most of the studies used images of skin lesions, classical machine learning algorithms, and multi-class classification tasks to develop models to diagnose dermatological diseases. Most of the reviewed articles did not target leprosy as the study's primary objective but rather the classification of different skin diseases (among them, leprosy). Although AI-supported leprosy diagnosis is constantly evolving, research in this area is still in its early stage, then studies are required to make AI solutions mature enough to be transformed into clinical practice. Expanding research efforts on leprosy diagnosis, coupled with the advocacy of open science in leveraging AI for diagnostic support, can yield robust and influential outcomes.
Collapse
Affiliation(s)
- Jacks Renan Neves Fernandes
- PhD Program in Biotechnology—Northeast Biotechnology Network, Federal University of Piauí, Teresina 64049-550, Brazil;
| | - Ariel Soares Teles
- Postgraduate Program in Biotechnology, Parnaíba Delta Federal University, Parnaíba 64202-020, Brazil; (T.R.S.F.); (L.D.B.L.); (S.T.)
- Federal Institute of Maranhão, Araioses 65570-000, Brazil
| | - Thayaná Ribeiro Silva Fernandes
- Postgraduate Program in Biotechnology, Parnaíba Delta Federal University, Parnaíba 64202-020, Brazil; (T.R.S.F.); (L.D.B.L.); (S.T.)
| | - Lucas Daniel Batista Lima
- Postgraduate Program in Biotechnology, Parnaíba Delta Federal University, Parnaíba 64202-020, Brazil; (T.R.S.F.); (L.D.B.L.); (S.T.)
| | - Surjeet Balhara
- Department of Electronics & Communication Engineering, Bharati Vidyapeeth’s College of Engineering, New Delhi 110063, India;
| | - Nishu Gupta
- Department of Electronic Systems, Faculty of Information Technology and Electrical Engineering, Norwegian University of Science and Technology, 2815 Gjøvik, Norway;
| | - Silmar Teixeira
- Postgraduate Program in Biotechnology, Parnaíba Delta Federal University, Parnaíba 64202-020, Brazil; (T.R.S.F.); (L.D.B.L.); (S.T.)
| |
Collapse
|
8
|
Zein-Eddine R, Hak F, Le Meur A, Genestet C, Dumitrescu O, Guyeux C, Senelle G, Sola C, Refrégier G. The paradoxes of Mycobacterium tuberculosis molecular evolution and consequences for the inference of tuberculosis emergence date. Tuberculosis (Edinb) 2023; 143S:102378. [PMID: 38012921 DOI: 10.1016/j.tube.2023.102378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 07/10/2023] [Accepted: 07/17/2023] [Indexed: 11/29/2023]
Abstract
The date of Mycobacterium tuberculosis complex emergence has been the subject of long debates. New studies joining archaeological efforts with sequencing methods raise high hopes for solving whether this emergence is closer to 70,000 or to 6000 years before present. Inferring the date of emergence of this pathogen based on sequence data requires a molecular clock. Several clocks inferred from different types of loci and/or different samples, using both sound reasoning and reliable data, are actually very different, which we refer to as the paradoxes of M. tuberculosis molecular evolution. After having presented these paradoxes, we will remind the limits of the molecular clocks used in the different studies such as the assumption of homogeneous substitution rate. We will then review recent results that shed new light on the characteristics of M. tuberculosis molecular evolution: traces of diverse selection pressures, the impact of host dynamics, etc. We provide some ideas on what to do next to get nearer to a reliable dating of Mycobacterium tuberculosis complex emergence. Among them, the collection of additional remains from ancient tuberculosis seems still essential.
Collapse
Affiliation(s)
- R Zein-Eddine
- Laboratoire d'Optique et Biosciences, Ecole Polytechnique, Institut National de la Santé et de la Recherche Médicale: U1182, Centre National de la Recherche Scientifique: UMR7645, France
| | - F Hak
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique et Evolution, 91190, Gif-sur-Yvette, France
| | - A Le Meur
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique et Evolution, 91190, Gif-sur-Yvette, France
| | - C Genestet
- CIRI - Centre International de Recherche en Infectiologie, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon-1, Inserm U1111, CNRS UMR5308, Lyon, France; Hospices Civils de Lyon, Institut des Agents Infectieux, Laboratoire de bactériologie, Lyon, France
| | - O Dumitrescu
- CIRI - Centre International de Recherche en Infectiologie, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon-1, Inserm U1111, CNRS UMR5308, Lyon, France; Hospices Civils de Lyon, Institut des Agents Infectieux, Laboratoire de bactériologie, Lyon, France
| | - C Guyeux
- DISC Computer Science Department, FEMTO-ST Institute, UMR 6174 CNRS, Univ. Bourgogne Franche-Comté (UBFC), 16 Route de Gray, 25000, Besançon, France
| | - G Senelle
- DISC Computer Science Department, FEMTO-ST Institute, UMR 6174 CNRS, Univ. Bourgogne Franche-Comté (UBFC), 16 Route de Gray, 25000, Besançon, France
| | - C Sola
- Université de Paris, IAME, UMR1137, INSERM, Paris, France; AP-HP, GHU Nord, Service de mycobactériologie spécialisée et de référence, Paris, France; Université Paris-Saclay, Saint-Aubin, France
| | - G Refrégier
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique et Evolution, 91190, Gif-sur-Yvette, France.
| |
Collapse
|
9
|
Khan S, Punnoose K, Bishara NZA, Ali R, Khan S, Ahmad S, Marouf HAA, Mirza S, Ishrat R, Haque S. Identification of potential inhibitor molecule against MabA protein of Mycobacterium leprae by integrated in silico approach. J Biomol Struct Dyn 2023; 41:11231-11246. [PMID: 36661253 DOI: 10.1080/07391102.2022.2160818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/15/2022] [Indexed: 01/21/2023]
Abstract
Leprosy is one of the chronic diseases with which humanity has struggled globally for millennia. The potent anti-leprosy medications rifampicin, clofazimine and dapsone, among others, are used to treat leprosy. Nevertheless, even in regions of the world where these drugs have been successfully implemented, resistance continues to be observed. Due to the problems with the current treatments, this disease should be fought at every level of society with new drugs. The purpose of this research was to identify natural candidates with the ability to inhibit MabA (gene-fabG1) with fewer negative effects. The work was accomplished through molecular docking, followed by a dynamic investigation of protein-ligand, which play a significant role in the design of pharmaceuticals. After modelling the protein structure with MODELLER 9.21v, AutoDock Vina was used to perform molecular docking with 13 3 D anti-leprosy medicines and a zinc library to determine the optimal protein-ligand interaction. In addition, the docking result was filtered based on binding energy, ADMET characteristics, PASS analysis and the most crucial binding residues. The ZINC08101051 chemical compound was prioritized for further study. Using an all-atom 100 ns MD simulation, the binding pattern and conformational changes in protein upon ligand binding were studied. Recommendation for subsequent validation based on deviation, fluctuation, gyration and hydrogen bond analysis, followed by main component and free energy landscape.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Saif Khan
- Department of Basic Dental and Medical Sciences, College of Dentistry, Ha'il University, Ha'il, Saudi Arabia
| | - Kurian Punnoose
- Department of Oral and Maxillofacial surgery, College of Dentistry, Ha'il University, Ha'il, Saudi Arabia
| | - Nashwa Zaki Ali Bishara
- Department of Preventive Dental Sciences, College of Dentistry, Ha'il University, Ha'il, Saudi Arabia
| | - Rafat Ali
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (Central University), New Delhi, India
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Shahira Khan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (Central University), New Delhi, India
| | - Saheem Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Hail, Saudi Arabia
| | - Hussein Abdel-Aziz Marouf
- Department of Oral and Maxillofacial surgery, College of Dentistry, Ha'il University, Ha'il, Saudi Arabia
| | - Shadab Mirza
- Department of Health Services Administration, College of Dentistry, Ha'il University, Ha'il, Saudi Arabia
| | - Romana Ishrat
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (Central University), New Delhi, India
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
| |
Collapse
|
10
|
Panigrahi R, Priyadarshini SR, Sahoo PK, Alam T, Saeed S, Hasan S. Lepromatous Leprosy Manifesting As Chronic Macrocheilia: Report of a Rare Case. Cureus 2023; 15:e47859. [PMID: 38021977 PMCID: PMC10680308 DOI: 10.7759/cureus.47859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2023] [Indexed: 12/01/2023] Open
Abstract
Leprosy is a chronic debilitating disorder caused by the acid-fast bacilli Mycobacterium leprae (M. leprae) and Mycobacterium lepromatosis. These bacilli exhibit a distinctive predilection for the skin and peripheral nerves, although they can potentially impact any system in the body. Lately, there has been a notable reduction in mucosal symptoms, largely attributed to the timely diagnosis and treatment of leprosy. Nonetheless, oral lesions continue to hold significant epidemiological importance due to their crucial role in disease transmission. Oral manifestations, although rare, are frequently encountered in individuals afflicted with multi-bacillary leprosy. Chronic macrocheilia is an exceedingly rare manifestation of the disease, with only a few documented case reports and case studies. This article aims to document an exceptionally uncommon case of lepromatous leprosy with chronic macrocheilia as the sole presenting feature.
Collapse
Affiliation(s)
- Rajat Panigrahi
- Department of Oral Medicine and Radiology, Institute of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, IND
| | - Smita R Priyadarshini
- Department of Oral Medicine and Radiology, Institute of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, IND
| | - Pradyumna K Sahoo
- Department of Prosthodontics, Institute of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, IND
| | - Tanveer Alam
- Department of Dental Surgery, College of Dentistry King Khalid University, Abha, SAU
| | - Shazina Saeed
- Department of Epidemiology and Public Health, Amity Institute of Public Health & Hospital Administration, Amity University, Noida, IND
| | - Shamimul Hasan
- Department of Oral Medicine and Radiology, Faculty of Dentistry, Jamia Millia Islamia, New Delhi, IND
| |
Collapse
|
11
|
Jouet A, Braet SM, Gaudin C, Bisch G, Vasconcellos S, Epaminondas Nicacio de Oliveira do Livramento RE, Prado Palacios YY, Fontes AB, Lucena N, Rosa P, Moraes M, La K, Badalato N, Lenoir E, Ferré A, Clément M, Hasker E, Grillone SH, Abdou W, Said A, Assoumani Y, Attoumani N, Laurent Y, Cambau E, de Jong BC, Suffys PN, Supply P. Hi-plex deep amplicon sequencing for identification, high-resolution genotyping and multidrug resistance prediction of Mycobacterium leprae directly from patient biopsies by using Deeplex Myc-Lep. EBioMedicine 2023; 93:104649. [PMID: 37327675 DOI: 10.1016/j.ebiom.2023.104649] [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: 02/08/2023] [Revised: 05/25/2023] [Accepted: 05/29/2023] [Indexed: 06/18/2023] Open
Abstract
BACKGROUND Expansion of antimicrobial resistance monitoring and epidemiological surveillance are key components of the WHO strategy towards zero leprosy. The inability to grow Mycobacterium leprae in vitro precludes routine phenotypic drug susceptibility testing, and only limited molecular tests are available. We evaluated a culture-free targeted deep sequencing assay, for mycobacterial identification, genotyping based on 18 canonical SNPs and 11 core variable-number tandem-repeat (VNTR) markers, and detection of rifampicin, dapsone and fluoroquinolone resistance-associated mutations in rpoB/ctpC/ctpI, folP1, gyrA/gyrB, respectively, and hypermutation-associated mutations in nth. METHODS The limit of detection (LOD) was determined using DNA of M. leprae reference strains and from 246 skin biopsies and 74 slit skin smears of leprosy patients, with genome copies quantified by RLEP qPCR. Sequencing results were evaluated versus whole genome sequencing (WGS) data of 14 strains, and versus VNTR-fragment length analysis (FLA) results of 89 clinical specimens. FINDINGS The LOD for sequencing success ranged between 80 and 3000 genome copies, depending on the sample type. The LOD for minority variants was 10%. All SNPs detected in targets by WGS were identified except in a clinical sample where WGS revealed two dapsone resistance-conferring mutations instead of one by Deeplex Myc-Lep, due to partial duplication of the sulfamide-binding domain in folP1. SNPs detected uniquely by Deeplex Myc-Lep were missed by WGS due to insufficient coverage. Concordance with VNTR-FLA results was 99.4% (926/932 alleles). INTERPRETATION Deeplex Myc-Lep may help improve the diagnosis and surveillance of leprosy. Gene domain duplication is an original putative drug resistance-related genetic adaptation in M. leprae. FUNDING EDCTP2 programme supported by the European Union (grant number RIA2017NIM-1847 -PEOPLE). EDCTP, R2Stop: Effect:Hope, The Mission To End Leprosy, the Flemish Fonds Wetenschappelijk Onderzoek.
Collapse
Affiliation(s)
| | - Sofie Marijke Braet
- Institute of Tropical Medicine, Antwerp, Belgium; Department of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Antwerp, Belgium; Research Foundation Flanders, Brussels, Belgium
| | | | | | - Sidra Vasconcellos
- Laboratório de Biologia Molecular Aplicada a Micobactérias, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | | | - Yrneh Yadamis Prado Palacios
- Laboratório de Biologia Molecular Aplicada a Micobactérias, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | | | | | - Patricia Rosa
- Instituto Lauro de Souza Lima, Bauru, São Paulo, Brazil
| | | | - Kevin La
- APHP-GHU Paris Nord Hôpital Bichat, Service de mycobactériologie spécialisée et de référence, Centre National de Référence des Mycobactéries et de la Résistance des Mycobactéries aux Antituberculeux - Laboratoire Associé, Paris, France; Université Paris Cité, INSERM, IAME UMR1137, Paris, France
| | | | | | | | | | - Epco Hasker
- Institute of Tropical Medicine, Antwerp, Belgium
| | | | | | | | - Younoussa Assoumani
- Damien Foundation, Comoros; National Tuberculosis and Leprosy Control Program, Moroni, Comoros
| | | | | | - Emmanuelle Cambau
- APHP-GHU Paris Nord Hôpital Bichat, Service de mycobactériologie spécialisée et de référence, Centre National de Référence des Mycobactéries et de la Résistance des Mycobactéries aux Antituberculeux - Laboratoire Associé, Paris, France; Université Paris Cité, INSERM, IAME UMR1137, Paris, France
| | | | - Philip Noël Suffys
- Laboratório de Biologia Molecular Aplicada a Micobactérias, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Philip Supply
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France.
| |
Collapse
|
12
|
Poulton NC, DeJesus MA, Munsamy-Govender V, Roberts CG, Azadian ZA, Bosch B, Lin KM, Li S, Rock JM. Beyond antibiotic resistance: the whiB7 transcription factor coordinates an adaptive response to alanine starvation in mycobacteria. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.02.543512. [PMID: 37333137 PMCID: PMC10274678 DOI: 10.1101/2023.06.02.543512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Pathogenic mycobacteria are a significant cause of morbidity and mortality worldwide. These bacteria are highly intrinsically drug resistant, making infections challenging to treat. The conserved whiB7 stress response is a key contributor to mycobacterial intrinsic drug resistance. Although we have a comprehensive structural and biochemical understanding of WhiB7, the complex set of signals that activate whiB7 expression remain less clear. It is believed that whiB7 expression is triggered by translational stalling in an upstream open reading frame (uORF) within the whiB7 5' leader, leading to antitermination and transcription into the downstream whiB7 ORF. To define the signals that activate whiB7, we employed a genome-wide CRISPRi epistasis screen and identified a diverse set of 150 mycobacterial genes whose inhibition results in constitutive whiB7 activation. Many of these genes encode amino acid biosynthetic enzymes, tRNAs, and tRNA synthetases, consistent with the proposed mechanism for whiB7 activation by translational stalling in the uORF. We show that the ability of the whiB7 5' regulatory region to sense amino acid starvation is determined by the coding sequence of the uORF. The uORF shows considerable sequence variation among different mycobacterial species, but it is universally and specifically enriched for alanine. Providing a potential rationalization for this enrichment, we find that while deprivation of many amino acids can activate whiB7 expression, whiB7 specifically coordinates an adaptive response to alanine starvation by engaging in a feedback loop with the alanine biosynthetic enzyme, aspC. Our results provide a holistic understanding of the biological pathways that influence whiB7 activation and reveal an extended role for the whiB7 pathway in mycobacterial physiology, beyond its canonical function in antibiotic resistance. These results have important implications for the design of combination drug treatments to avoid whiB7 activation, as well as help explain the conservation of this stress response across a wide range of pathogenic and environmental mycobacteria.
Collapse
Affiliation(s)
- Nicholas C Poulton
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| | - Michael A DeJesus
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| | - Vanisha Munsamy-Govender
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| | - Cameron G Roberts
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| | - Zachary A Azadian
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| | - Barbara Bosch
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| | - Karl Matthew Lin
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| | - Shuqi Li
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| | - Jeremy M Rock
- Laboratory of Host-Pathogen Biology, The Rockefeller University, New York, New York, United States of America
| |
Collapse
|
13
|
Cohen JC, de Souza Muniz AM, Carvalho Junior RB, de Oliveira HLC, Miranda ST, Gomes MK, da Cunha AJLA, Menegaldo LL. Gait analysis of leprosy patients with foot drop using principal component analysis. Clin Biomech (Bristol, Avon) 2023; 105:105983. [PMID: 37167843 DOI: 10.1016/j.clinbiomech.2023.105983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 04/25/2023] [Accepted: 05/01/2023] [Indexed: 05/13/2023]
Abstract
BACKGROUND Peripheral nerve injury caused by leprosy can lead to foot drop, resulting in an altered gait pattern that has not been previously described using 3D gait analysis. METHODS Gait kinematics and dynamics were analyzed in 12 patients with unilateral foot drop caused by leprosy and in 15 healthy controls. Biomechanical data from patients' affected and unaffected limbs were compared with controls using inferential statistics and a standard distance, based on principal components analysis (PCA). FINDINGS Patients walked slower than controls (0.8 ± 0.2 vs. 1.1 ± 0.2 m/s, p = 0.003), with a reduced stance and increased swing percentage. The affected limb increased (p < 0.05) plantar flexion at the initial contact (-16.8o ± 8.3), terminal stance (-29.1o ± 11.5), and swing (-12.4o ± 6.2) in the affected limb compared to unaffected (-6.6o ± 10.3; -14.6o ± 11.6; 2.4o ± 7.6) and controls (-5.4o ± 2.5; -18.8o ± 5.8; -1.4o ± 3.9). Increased pelvic tilt and knee adduction/abduction range, with lower hip adduction, were observed. The second peak of ground reaction force (98.6 ± 5.2 %BW), ankle torque (0.99 ± 0.33 Nm/kg), and net ankle work in stance (-0.03 ± 5.4 J/Kg) decreased in the affected limb compared to controls (104.1 ± 5.5 %BW; 1.24 ± 0.4 Nm/kg; -4.58 ± 5.19 J/kg; p < 0.05). There were decreasing multivariate standard distances in the affected limb compared with the unaffected and controls. PCA loading factors highlighted the major differences between groups. INTERPRETATION Leprosy patients with foot drop presented altered gait patterns in affected and unaffected limbs. There were remarkable differences in ankle kinematics and dynamics. Rehabilitation devices, such as ankle foot orthosis or tendon transfer surgeries to increase ankle dorsiflexion, could benefit these patients and reduce deviations from normal gait.
Collapse
Affiliation(s)
- Jose Carlos Cohen
- Hospital Universitário, Universidade Federal do Rio de Janeiro (UFRJ), Brazil
| | - Adriane Mara de Souza Muniz
- Programa de Engenharia Biomédica (PEB/COPPE), Universidade Federal do Rio de Janeiro (UFRJ), Brazil; Escola de Educação Física do Exército (EsEFEx) - (Brazilian Army), Brazil
| | | | | | - Silvana T Miranda
- Hospital Universitário, Universidade Federal do Rio de Janeiro (UFRJ), Brazil
| | - Maria Kátia Gomes
- Hospital Universitário, Universidade Federal do Rio de Janeiro (UFRJ), Brazil
| | | | - Luciano L Menegaldo
- Programa de Engenharia Biomédica (PEB/COPPE), Universidade Federal do Rio de Janeiro (UFRJ), Brazil.
| |
Collapse
|
14
|
Hambridge T, Coffeng LE, de Vlas SJ, Richardus JH. Establishing a standard method for analysing case detection delay in leprosy using a Bayesian modelling approach. Infect Dis Poverty 2023; 12:12. [PMID: 36800979 PMCID: PMC9940321 DOI: 10.1186/s40249-023-01065-4] [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: 10/06/2022] [Accepted: 02/06/2023] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND Leprosy is an infectious disease caused by Mycobacterium leprae and remains a source of preventable disability if left undetected. Case detection delay is an important epidemiological indicator for progress in interrupting transmission and preventing disability in a community. However, no standard method exists to effectively analyse and interpret this type of data. In this study, we aim to evaluate the characteristics of leprosy case detection delay data and select an appropriate model for the variability of detection delays based on the best fitting distribution type. METHODS Two sets of leprosy case detection delay data were evaluated: a cohort of 181 patients from the post exposure prophylaxis for leprosy (PEP4LEP) study in high endemic districts of Ethiopia, Mozambique, and Tanzania; and self-reported delays from 87 individuals in 8 low endemic countries collected as part of a systematic literature review. Bayesian models were fit to each dataset to assess which probability distribution (log-normal, gamma or Weibull) best describes variation in observed case detection delays using leave-one-out cross-validation, and to estimate the effects of individual factors. RESULTS For both datasets, detection delays were best described with a log-normal distribution combined with covariates age, sex and leprosy subtype [expected log predictive density (ELPD) for the joint model: -1123.9]. Patients with multibacillary (MB) leprosy experienced longer delays compared to paucibacillary (PB) leprosy, with a relative difference of 1.57 [95% Bayesian credible interval (BCI): 1.14-2.15]. Those in the PEP4LEP cohort had 1.51 (95% BCI: 1.08-2.13) times longer case detection delay compared to the self-reported patient delays in the systematic review. CONCLUSIONS The log-normal model presented here could be used to compare leprosy case detection delay datasets, including PEP4LEP where the primary outcome measure is reduction in case detection delay. We recommend the application of this modelling approach to test different probability distributions and covariate effects in studies with similar outcomes in the field of leprosy and other skin-NTDs.
Collapse
Affiliation(s)
- Thomas Hambridge
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - Luc E. Coffeng
- grid.5645.2000000040459992XDepartment of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Sake J. de Vlas
- grid.5645.2000000040459992XDepartment of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Jan Hendrik Richardus
- grid.5645.2000000040459992XDepartment of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| |
Collapse
|
15
|
Yotsu RR, Miyamoto Y, Mori S, Ato M, Sugawara-Mikami M, Yamaguchi S, Yamazaki M, Ozaki M, Ishii N. Hansen's disease (leprosy) in Japan, 1947-2020: an epidemiologic study during the declining phase to elimination. Int J Infect Dis 2022; 125:265-274. [PMID: 36280096 PMCID: PMC9798910 DOI: 10.1016/j.ijid.2022.10.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/17/2022] [Accepted: 10/18/2022] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVES Leprosy, or Hansen's disease was a major public health problem in Japan in the early 20th century. Today, the number of new cases has decreased significantly. We aimed to investigate the trends of leprosy in Japan over the past 73 years and the challenges faced in recent years. METHODS We assessed the data on newly registered cases of leprosy from 1947 to 2020. RESULTS A total of 10,796 newly registered cases of leprosy were reported during the study period, of which 7573 were registered in mainland Japan, 2962 in Okinawa, and 250 were of foreign origin. Most autochthonous cases were born before 1950 in mainland Japan and before 1975 in Okinawa. The number of nonautochthonous cases surpassed that of autochthonous cases in 1992. Nonautochthonous cases originated from 26 countries, particularly Brazil and the Philippines. Three cases of antimicrobial resistance have been detected among nonautochthonous cases since 2004. CONCLUSION Our data suggest that ongoing transmission of leprosy likely ceased in the 1940s in mainland Japan and in the 1970s in Okinawa. With the recent rise of nonautochthonous cases with globalization, continuous surveillance and efforts to maintain leprosy services within the country are necessary even after reaching the state of elimination.
Collapse
Affiliation(s)
- Rie R. Yotsu
- Department of Tropical Medicine, Tulane School of Public Health and Tropical Medicine, New Orleans, USA,Department of Dermatology, National Center for Global Health and Medicine, Tokyo, Japan,School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan,Corresponding author: Rie R. Yotsu 1440 Canal Street, New Orleans, LA 70118, (R.R. Yotsu)
| | - Yuji Miyamoto
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shuichi Mori
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Manabu Ato
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Mariko Sugawara-Mikami
- West Yokohama Sugawara Dermatology Clinic, Yokohama, Japan,Department of Clinical Laboratory Science, Faculty of Medicine Technology, Teikyo University, Tokyo, Japan
| | - Sayaka Yamaguchi
- Department of Dermatology, University of the Ryukyus, Okinawa, Japan
| | | | - Motoaki Ozaki
- National Sanatorium Nagashima-Aiseien, Setouchi-shi, Japan
| | - Norihisa Ishii
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan,National Sanatorium Tamazenshoen, Tokyo, Japan
| |
Collapse
|
16
|
Zhou Z, Pierneef L, van Hooij A, Geluk A. Detection of anti-M. leprae antibodies in healthy children in China: A systematic review of Chinese literature. FRONTIERS IN TROPICAL DISEASES 2022. [DOI: 10.3389/fitd.2022.963674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Leprosy is an infectious disease caused by Mycobacterium leprae (M. leprae) that mainly involves the skin and peripheral nerves, causing lifelong deformities and social stigma. As evident from the practically stable number of new cases reported worldwide during the past decade, transmission is still ongoing. On route to leprosy elimination, an appropriate tool is needed to monitor M. leprae transmission. M. leprae-specific antibodies indicate infection with M. leprae, but do not differentiate between present and past infection. Nevertheless, detection of M. leprae infection in young children per definition indicates recent infection. Hence, seroprevalence in young children can be used to monitor recent M. leprae transmission. Despite having eliminated leprosy in most parts of the country, studies on transmission conducted in China are not sufficiently reported in the English literature. Therefore, we performed a systematic review of Chinese literature describing serological studies in healthy children in (former) leprosy endemic areas in China, available in the Chinese databases: China National Knowledge Infrastructure (CNKI), China Science and Technology Journal Database (VIP), and Wanfang Database. From the 710 articles identified in these three Chinese databases, only four full-text articles fulfilled all inclusion criteria regarding sufficiently detailed descriptions of anti-M. leprae antibodies in healthy children. Two additional papers were identified through snowballing, resulting in a total of six articles considered for this review reporting quantitative serological data from three Chinese provinces between 1987 and 2003. All studies used ELISAs to quantify antibody levels. Seroprevalence in healthy children ranged from 7.93% (Yunnan) to 32.35% (Jiangsu). If the same method was used (in Jiangsu), direct comparison of studies at different time points indicated that decrease in disease prevalence (0.28 to 0.16 per 100,000) or new case detection rate (2.6 to 1.0 per 100,000) from 1987-1991 corresponded to decrease in anti-M. leprae antibody seroprevalence (30.86% to 22.61%) in healthy children. Thus, these findings are consistent with the previous finding that anti-M. leprae antibody seroprevalence in young children represents a surrogate indicator to monitor transmission.
Collapse
|
17
|
Oliveira Ascef B, de Oliveira GLA, Ribeiro Filha Coriolano C, De Oliveira Junior HA. Forecasting models for leprosy cases: a scoping review protocol. BMJ Open 2022; 12:e062828. [PMID: 35902193 PMCID: PMC9341210 DOI: 10.1136/bmjopen-2022-062828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 07/20/2022] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Leprosy is a neglected tropical disease caused by Mycobacterium leprae that mainly affects the skin, the peripheral nerves, the mucosa of the upper respiratory tract and the eyes. Mathematical models and statistical methodologies could play an important role in decision-making and help maintain the gains in elimination programmes. Various models for predicting leprosy cases have been reported in the literature, but they have different settings and distinct approaches to predicting the cases. This study describes the protocol for a scoping review to identify and synthesise information from studies using models to forecast leprosy cases. METHODS AND ANALYSIS A scoping review methodology will be applied following the Joanna Briggs Institute methodology for scoping reviews and will be reported according to Preferred Reporting Items for Systematic Reviews and Meta-analysis Extension for Scoping Reviews. We will perform a systematic search from when each database started until April 2022 and we will include the following electronic databases: MEDLINE via PubMed, Embase, Cochrane Library and Latin American and Caribbean Health Science Literature Database. Data will be extracted and recorded on a calibrated predefined data form and will be presented in a tabular form accompanied by a descriptive summary. The Prediction Model Study Risk of Bias Assessment Tool (PROBAST) will be used. ETHICS AND DISSEMINATION No ethical approval is required for this study. This scoping review will identify and map the methodological and other characteristics of modelling studies predicting leprosy cases. We hope that the review will contribute to scientific knowledge in this area and act as a basis for researchers designing and conducting leprosy models. This information can also be used to enhance national surveillance systems and to target specific policies. The protocol and consequent publications of this scoping review will be disseminated through peer-reviewed publications and policy briefs. SYSTEMATIC REVIEW REGISTRATION This scoping review was registered in the Open Science Framework (https://doi.org/10.17605/OSF.IO/W9375).
Collapse
Affiliation(s)
| | - Gustavo Laine Araújo de Oliveira
- The Disease Surveillance and Elimination Coordinating Committee, Department of Chronic Conditions and Sexually Transmitted Infections, Health Surveillance Secretariat, Ministry of Health, Brasília, Brazil
| | - Carmelita Ribeiro Filha Coriolano
- The Disease Surveillance and Elimination Coordinating Committee, Department of Chronic Conditions and Sexually Transmitted Infections, Health Surveillance Secretariat, Ministry of Health, Brasília, Brazil
| | | |
Collapse
|
18
|
Abstract
PURPOSE OF REVIEW The aim of this article is to review the most recent evidences concerning mycobacterial skin infections, limiting the period of literature research to 2020--2021. RECENT FINDINGS Mycobacterial skin infections include a heterogeneous group of cutaneous diseases.Cutaneous tuberculosis is usually the result of hematogenous dissemination or spread from underlying foci and it must be distinguished from tuberculids, resulting from the immunological reaction to Mycobacterium tuberculosis antigens. Leprosy prevalence was drastically reduced after introduction of multidrug therapy in the 1980 s, but cases are still reported due to underdiagnosis, and animal and environmental reservoirs. Recent advances concentrate in the diagnostic field. Specific guidelines for the treatment of nontuberculous mycobacteria skin infections are missing and surgical procedures may be required. Prognosis is better as compared to nontuberculous mycobacteria lung disease. Rapid laboratory-confirmed diagnosis of Buruli ulcer may be achieved by the IS2404 PCR. Among new drugs, telacebec is promising in terms of potency, shorter duration and tolerability in animal studies. A clinical trial in humans is planned. SUMMARY Mycobacterial cutaneous lesions are nonpathognomonic and clinical suspicion must be confirmed by culture or molecular detection. Long-course multidrug treatment is required based on susceptibility tests. Surgical intervention may also be required. Rehabilitation and psychosocial support reduce long-term physical and mental consequences mostly in Buruli ulcer and leprosy.
Collapse
|
19
|
Reza NR, Kusumaputro BH, Alinda MD, Listiawan MY, Thio HB, Prakoeswa CRS. Pediatric Leprosy Profile in the Postelimination Era: A Study from Surabaya, Indonesia. Am J Trop Med Hyg 2022; 106:775-778. [PMID: 35008042 PMCID: PMC8922520 DOI: 10.4269/ajtmh.21-0458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 10/21/2021] [Indexed: 11/07/2022] Open
Abstract
Children who live in leprosy-endemic areas are susceptible to infection due to early and frequent exposure to Mycobacterium leprae. Indonesia is on the verge of eliminating this disease (prevalence rate < 1/10,000 population), but pediatric leprosy continues to occur in low-endemic areas. This study aimed to evaluate pediatric leprosy over a decade in a tertiary hospital in Surabaya, Indonesia. A retrospective study of leprosy in children under 15 years old between 2010 and 2019 was conducted in the Morbus Hansen Division, Outpatient Clinic at Dr. Soetomo Hospital in Surabaya, Indonesia. Seventy pediatric leprosy cases were identified between 2010 and 2019, consisting of 58 multibacillary (MB)-type cases and 12 paucibacillary (PB)-type cases. Slit skin smear (SSS) was positive in 26 cases. There were two cases of grade-2 disability and 15 cases of leprosy reaction (erythema nodosum leprosum) in children at the time of diagnosis. There was an insignificant decline in the number of pediatric leprosy cases in the last 10 years. Cases and disabilities in children were found in some leprosy pocket areas even though the national elimination rate has been achieved. MB infections, disability, and treatment defaults were common problems in pediatric leprosy.
Collapse
Affiliation(s)
- Novianti Rizky Reza
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Airlangga-Dr. Soetomo General Academic Hospital Surabaya, Surabaya, East Java, Indonesia;,Leprosy Study Group, Institute of Tropical Disease, Surabaya, Indonesia;,Department of Dermatology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Bagus Hario Kusumaputro
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Airlangga-Dr. Soetomo General Academic Hospital Surabaya, Surabaya, East Java, Indonesia;,Leprosy Study Group, Institute of Tropical Disease, Surabaya, Indonesia
| | - Medhi Denisa Alinda
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Airlangga-Dr. Soetomo General Academic Hospital Surabaya, Surabaya, East Java, Indonesia;,Leprosy Study Group, Institute of Tropical Disease, Surabaya, Indonesia
| | - Muhammad Yulianto Listiawan
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Airlangga-Dr. Soetomo General Academic Hospital Surabaya, Surabaya, East Java, Indonesia;,Leprosy Study Group, Institute of Tropical Disease, Surabaya, Indonesia
| | - Hok Bing Thio
- Department of Dermatology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Cita Rosita Sigit Prakoeswa
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Airlangga-Dr. Soetomo General Academic Hospital Surabaya, Surabaya, East Java, Indonesia;,Leprosy Study Group, Institute of Tropical Disease, Surabaya, Indonesia;,Address correspondence to Cita Prakoeswa, Department of Dermatology and Venereology, Faculty of Medicine, Universitas Airlangga—Dr. Soetomo General Academic Hospital Surabaya, Surabaya 60131, East Java, Indonesia. E-mail:
| |
Collapse
|
20
|
Jariyakulwong N, Julanon N, Saengboonmee C. Lepromatous leprosy with a suspected 30-year incubation period: A case report of a practically eradicated area. J Taibah Univ Med Sci 2022; 17:602-605. [PMID: 35983441 PMCID: PMC9356350 DOI: 10.1016/j.jtumed.2021.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/21/2021] [Indexed: 11/26/2022] Open
Abstract
Objectives Methods Results Conclusions
Collapse
|