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Fang D, Wang R, Fan X, Li M, Qian C, Cao B, Yu J, Liu H, Lou Y, Wan K. Recombinant BCG vaccine expressing multistage antigens of Mycobacterium tuberculosis provides long-term immunity against tuberculosis in BALB/c mice. Hum Vaccin Immunother 2024; 20:2299607. [PMID: 38258510 PMCID: PMC10807470 DOI: 10.1080/21645515.2023.2299607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/22/2023] [Indexed: 01/24/2024] Open
Abstract
Tuberculosis (TB) caused by Mycobacterium tuberculosis (Mtb) persistently kills nearly 1.5 million lives per year in the world, whereas the only licensed TB vaccine BCG exhibits unsatisfactory efficacy in adults. Taking BCG as a vehicle to express Mtb antigens is a promising way to enhance its efficacy against Mtb infection. In this study, the immune efficacy of recombination BCG (rBCG-ECD003) expressing specific antigens ESAT-6, CFP-10, and nDnaK was evaluated at different time points after immunizing BALB/c mice. The results revealed that rBCG-ECD003 induced multiple Th1 cytokine secretion including IFN-γ, TNF-α, IL-2, and IL-12 when compared to the parental BCG. Under the action of PPD or ECD003, rBCG-ECD003 immunization resulted in a significant increase in the proportion of IL-2+ and IFN-γ+IL-2+ CD4+T cells. Importantly, rBCG-ECD003 induced a stronger long-term humoral immune response without compromising the safety of the parental BCG vaccine. By means of the protective efficacy assay in vitro, rBCG-ECD003 showed a greater capacity to inhibit Mtb growth in the long term. Collectively, these features of rBCG-ECD003 indicate long-term protection and the promising effect of controlling Mtb infection.
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Affiliation(s)
- Danang Fang
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ruihuan Wang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xueting Fan
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Machao Li
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Chenyu Qian
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Bin Cao
- School of Public Health, University of South China, Hengyang, China
| | - Jinjie Yu
- School of Public Health, University of South China, Hengyang, China
| | - Haican Liu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yongliang Lou
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Kanglin Wan
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
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Huang HK, Chuang CS. Challenges in The Diagnosis of Ischemic stroke, Tuberculous Meningitis, and Co-Infection with HIV in a Socially Isolated Elderly Patient. Acta Neurol Taiwan 2024; 33(4):188-194. [PMID: 38030228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
BACKGROUND Ischemic stroke has been a common cause of death and disability in Taiwan, particularly among the elderly. Social isolation is a significant issue in an aging society, which can be associated with delayed medical care and difficulties in diagnosis. CASE A 76-year-old man presented with altered mental status, left-sided weakness, and declining cognitive function over three months. He had limited social connections and an unknown medical history. Initial brain imaging showed communicating hydrocephalus. Cerebrospinal fluid analysis revealed increased lymphocytes and high protein levels. Further imaging revealed multiple hyperintense lesions in the brain's white matter and acute ischemic stroke in specific areas. The patient was diagnosed with tuberculosis and HIV coinfection, leading to probable tuberculous meningitis, HIV encephalopathy, and pneumocystis jirovecii pneumonia. Treatment with antituberculous agents, antibiotics, and steroids improved the patient's level of consciousness. CONCLUSION Addressing social isolation and altered consciousness in elderly individuals requires a thoughtful approach. Reconsidering the differential diagnosis is crucial when it doesn't match the clinical severity. Clinicians should consider rare co-occurrences like ischemic stroke, TBM, and HIV infection in atypical TBM cases. A biopsychosocial perspective helps gather a comprehensive medical history for holistic care. Early diagnosis and timely intervention are vital for better outcomes in severe infections.
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Affiliation(s)
- Han-Ke Huang
- Department of Neurology, Changhua Christian Hospital, Taiwan
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3
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Elaydi S, Lozi R. Global dynamics of discrete mathematical models of tuberculosis. J Biol Dyn 2024; 18:2323724. [PMID: 38493487 DOI: 10.1080/17513758.2024.2323724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 02/21/2024] [Indexed: 03/19/2024]
Abstract
In this paper, we develop discrete models of Tuberculosis (TB). This includes SEI endogenous and exogenous models without treatment. These models are then extended to a SEIT model with treatment. We develop two types of net reproduction numbers, one is the traditional R 0 which is based on the disease-free equilibrium, and a new net reproduction number R 0 ( E ∗ ) based on the endemic equilibrium. It is shown that the disease-free equilibrium is globally asymptotically stable if R 0 ≤ 1 and unstable if R 0 > 1 . Moreover, the endemic equilibrium is locally asymptotically stable if R 0 ( E ∗ ) < 1 < R 0 .
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Affiliation(s)
- Saber Elaydi
- Department of Mathematics, Trinity University, San Antonio, TX, USA
| | - René Lozi
- Department of Mathematics, Laboratory J.A. Dieudonné, CNRS, Université Côte d'Azur, France
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Su HL, Lai SJ, Tsai KC, Fung KM, Lung TL, Hsu HM, Wu YC, Liu CH, Lai HX, Lin JH, Tseng TS. Structure-guided identification and characterization of potent inhibitors targeting PhoP and MtrA to combat mycobacteria. Comput Struct Biotechnol J 2024; 23:1477-1488. [PMID: 38623562 PMCID: PMC11016868 DOI: 10.1016/j.csbj.2024.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 04/01/2024] [Accepted: 04/01/2024] [Indexed: 04/17/2024] Open
Abstract
Mycobacteria are causative agents of tuberculosis (TB), which is a global health concern. Drug-resistant TB strains are rapidly emerging, thereby necessitating the urgent development of new drugs. Two-component signal transduction systems (TCSs) are signaling pathways involved in the regulation of various bacterial behaviors and responses to environmental stimuli. Applying specific inhibitors of TCSs can disrupt bacterial signaling, growth, and virulence, and can help combat drug-resistant TB. We conducted a comprehensive pharmacophore-based inhibitor screening and biochemical and biophysical examinations to identify, characterize, and validate potential inhibitors targeting the response regulators PhoP and MtrA of mycobacteria. The constructed pharmacophore model Phar-PR-n4 identified effective inhibitors of formation of the PhoP-DNA complex: ST132 (IC50 = 29 ± 1.6 µM) and ST166 (IC50 = 18 ± 1.3 µM). ST166 (KD = 18.4 ± 4.3 μM) and ST132 (KD = 14.5 ± 0.1 μM) strongly targeted PhoP in a slow-on, slow-off manner. The inhibitory potency and binding affinity of ST166 and ST132 for MtrAC were comparable to those of PhoP. Structural analyses and molecular dynamics simulations revealed that ST166 and ST132 mainly interact with the α8-helix and C-terminal β-hairpin of PhoP, with functionally essential residue hotspots for structure-based inhibitor optimization. Moreover, ST166 has in vitro antibacterial activity against Macrobacterium marinum. Thus, ST166, with its characteristic 1,2,5,6-tetrathiocane and terminal sulphonic groups, has excellent potential as a candidate for the development of novel antimicrobial agents to combat pathogenic mycobacteria.
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Affiliation(s)
- Han-Li Su
- Department of Emergency Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi City 600, Taiwan
| | - Shu-Jung Lai
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
- Research Center for Cancer Biology, China Medical University, Taichung, Taiwan
| | - Keng-Chang Tsai
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei, Taiwan
- Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Kit-Man Fung
- Biomedical Translation Research Center (BioTReC), Academia Sinica, Taipei 11529, Taiwan
| | - Tse-Lin Lung
- Institute of Molecular Biology, National Chung Hsing University, Taichung,Taiwan
| | - Hsing-Mien Hsu
- Institute of Molecular Biology, National Chung Hsing University, Taichung,Taiwan
| | - Yi-Chen Wu
- Institute of Molecular Biology, National Chung Hsing University, Taichung,Taiwan
| | - Ching-Hui Liu
- Institute of Molecular Biology, National Chung Hsing University, Taichung,Taiwan
| | - Hui-Xiang Lai
- Institute of Molecular Biology, National Chung Hsing University, Taichung,Taiwan
| | - Jiun-Han Lin
- Department of Industrial Technology, Ministry of Economic Affairs, Taipei, Taiwan
- Food Industry Research and Development Institute, Hsinchu City, Taiwan
| | - Tien-Sheng Tseng
- Institute of Molecular Biology, National Chung Hsing University, Taichung,Taiwan
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Nguyen TL, Kim H. Discovering peptides and computational investigations of a multiepitope vaccine target Mycobacterium tuberculosis. Synth Syst Biotechnol 2024; 9:391-405. [PMID: 38585591 PMCID: PMC10997871 DOI: 10.1016/j.synbio.2024.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/09/2024] [Accepted: 03/12/2024] [Indexed: 04/09/2024] Open
Abstract
Mycobacterium tuberculosis (MTB) is the causative agent of tuberculosis (TB), a prevalent airborne infectious disease. Despite the availability of the Bacille Calmette-Guerin vaccine, its global efficacy remains modest, and tuberculosis persists as a significant global public health threat. Addressing this challenge and advancing towards the End MTB Strategy, we developed a multiepitope vaccine (MEV) based on immunoinformatics and computational approaches. Immunoinformatics screening of MBT protein identified immune-dominant epitopes based on Major Histocompatibility Complex (MHC) allele binding, immunogenicity, antigenicity, allergenicity, toxicity, and cytokine inducibility. Selected epitopes were integrated into an MEV construct with adjuvant and linkers, forming a fully immunogenic vaccine candidate. Comprehensive analyses encompassed the evaluation of immunological and physicochemical properties, determination of tertiary structure, molecular docking with Toll-Like Receptors (TLR), molecular dynamics (MD) simulations for all atoms, and immune simulations. Our MEV comprises 534 amino acids, featuring 6 cytotoxic T lymphocyte, 8 helper T lymphocyte, and 7 linear B lymphocyte epitopes, demonstrating high antigenicity and stability. Notably, molecular docking studies and triplicate MD simulations revealed enhanced interactions and stability of MEV with the TLR4 complex compared to TLR2. In addition, the immune simulation indicated the capacity to effectively induce elevated levels of antibodies and cytokines, emphasizing the vaccine's robust immunogenic response. This study presents a promising MEV against TB, exhibiting favorable immunological and physicochemical attributes. The findings provide theoretical support for TB vaccine development. Our study aligns with the global initiative of the End MTB Strategy, emphasizing its potential impact on addressing persistent challenges in TB control.
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Affiliation(s)
- Truc Ly Nguyen
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Heebal Kim
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, 08826, Republic of Korea
- eGnome, Inc., Seoul, 05836, Republic of Korea
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Garay-Aguilar NV, Reynoso-Rosales LR, Llamo-Vilcherrez AP, Toro-Huamanchumo CJ. Tuberculosis in pregnancy and adverse neonatal outcomes in two peruvian hospitals. Eur J Obstet Gynecol Reprod Biol X 2024; 22:100304. [PMID: 38577130 PMCID: PMC10992712 DOI: 10.1016/j.eurox.2024.100304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 01/08/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024] Open
Abstract
Background According to the World Health Organization, tuberculosis (TB) ranks among the top 10 causes of death worldwide. The significance of TB during pregnancy lies in its symptoms, which can be mistaken for physiological changes associated with pregnancy. This confusion can lead to maternal-perinatal complications. Objective To evaluate the association between pulmonary TB in pregnancy and adverse neonatal outcomes in two Peruvian hospitals. Methods This is a retrospective cohort study. The target population consisted of pregnant women with and without pulmonary TB whose deliveries were attended at two public hospitals, located in Lima, Peru. The adverse neonatal outcomes were prematurity, low birth weight (LBW), and being small for gestational age (SGA). Crude and adjusted relative risks (RRa) were calculated with their respective 95% confidence intervals (95%CI). Results Information from 212 patients was analyzed; 48.1% had TB during pregnancy, and 23.1% had adverse neonatal outcomes (8%, 11.3%, and 12.3% for LBW, prematurity, and SGA, respectively). In the adjusted model, pregnant women with pulmonary TB had a 3.52 times higher risk of having a newborn with at least one of the adverse outcomes than those who were not exposed (aRR, 3.52; 95%CI: 1.93-6.68). Conclusion Pulmonary TB in pregnancy was jointly and independently associated with adverse neonatal outcomes, including LBW, prematurity, and being SGA.
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Affiliation(s)
| | | | - Anita P. Llamo-Vilcherrez
- Grupo Peruano de Investigación Epidemiológica, Unidad de Investigación para la Generación y Síntesis de Evidencias en Salud, Universidad San Ignacio de Loyola, Lima, Peru
- OBEMET Center for Obesity and Metabolic Health, Lima, Peru
| | - Carlos J. Toro-Huamanchumo
- Unidad de Investigación para la Generación y Síntesis de Evidencias en Salud, Universidad San Ignacio de Loyola, Lima, Peru
- OBEMET Center for Obesity and Metabolic Health, Lima, Peru
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Yang Y, Chen YZ, Xia T. Optimizing antigen selection for the development of tuberculosis vaccines. Cell Insight 2024; 3:100163. [PMID: 38572176 PMCID: PMC10987857 DOI: 10.1016/j.cellin.2024.100163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 04/05/2024]
Abstract
Tuberculosis (TB) remains a prevalent global infectious disease caused by genetically closely related tubercle bacilli in Mycobacterium tuberculosis complex (MTBC). For a century, the Bacillus Calmette-Guérin (BCG) vaccine has been the primary preventive measure against TB. While it effectively protects against extrapulmonary forms of pediatric TB, it lacks consistent efficacy in providing protection against pulmonary TB in adults. Consequently, the exploration and development of novel TB vaccines, capable of providing broad protection to populations, have consistently constituted a prominent area of interest in medical research. This article presents a concise overview of the novel TB vaccines currently undergoing clinical trials, discussing their classification, protective efficacy, immunogenicity, advantages, and limitations. In vaccine development, the careful selection of antigens that can induce strong and diverse specific immune responses is essential. Therefore, we have summarized the molecular characteristics, biological function, immunogenicity, and relevant studies associated with the chosen antigens for TB vaccines. These insights gained from vaccines and immunogenic proteins will inform the development of novel mycobacterial vaccines, particularly mRNA vaccines, for effective TB control.
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Affiliation(s)
- Yang Yang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730000, China
| | - Yi-Zhen Chen
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730000, China
| | - Tian Xia
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730000, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, 730046, China
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Taniguchi H, Kawamoto S, Monobe K, Aoki S. Data on molecular docking and molecular dynamics targeting Mycobacterium tuberculosis shikimic acid kinase. Data Brief 2024; 54:110370. [PMID: 38590616 PMCID: PMC10999656 DOI: 10.1016/j.dib.2024.110370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/28/2023] [Accepted: 03/21/2024] [Indexed: 04/10/2024] Open
Abstract
We have previously performed a hierarchical in silico screening of a Mycobacterium tuberculosis shikimic acid kinase [1]. Specifically, 11 compounds were screened from a library of 154,118 compounds provided by ChemBridge [2] using UCSF DOCK [3] and the GOLD [4] program in the first and second steps, respectively. Molecular dynamic simulations were further performed on compound 2 (2-[(5Z)-5-(1-benzyl-5bromo-2-oxoindol-3-(5Z)-5-(1-benzyl-5-bromo-2-oxoindol-3-(5Z)-4-oxo-2 ylidene)-4oxo-2-sulfanylidene-1,3-thiazolidin-3-yl] acetic acid), which showed antimicrobial efficacy. These processes yielded ligand docking scores and trajectories. In this data article, we have added solvent-accessible surface area and PCA analyses, which were calculated from the raw docking scores and trajectories. Data obtained from molecular docking and molecular dynamic simulations are useful in two ways: (1) Further support for previous work (2) Provides a stepping stone for experimental scientists to conduct in silico studies and research ideas for other drug discovery researchers and computational biologists. We believe that this article will provide an opportunity to develop new Mycobacterium tuberculosis therapeutics through searching for analogs and inhibitors against new targets.
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Affiliation(s)
- Hinata Taniguchi
- Department of Bioscience and Bioinformatics, School of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan
| | - Shuhei Kawamoto
- Department of Bioscience and Bioinformatics, School of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan
| | - Kohei Monobe
- Department of Bioscience and Bioinformatics, School of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan
| | - Shunsuke Aoki
- Department of Bioscience and Bioinformatics, School of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka-shi, Fukuoka 820-8502, Japan
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Brostrom RJ, Largen A, Nasa JN, Jeadrik G, Yamada S, Yadav S, Ko E, Warkentin JV, Chorba TL. TB-free Ebeye: Results from integrated TB and noncommunicable disease case finding in Ebeye, Marshall Islands. J Clin Tuberc Other Mycobact Dis 2024; 35:100418. [PMID: 38356926 PMCID: PMC10863304 DOI: 10.1016/j.jctube.2024.100418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024] Open
Abstract
Background Tuberculosis (TB) incidence rates in the Republic of the Marshall Islands are among the highest in the world, 480/100,000 in 2017. In response, the Health Ministry completed islandwide screening in Ebeye Island in 2017. Methods Participants were interviewed to obtain TB history, exposures, and symptoms. TB assessment included chest radiography with sputum collection for GeneXpert® MTB-RIF if indicated. TB diagnosis was made by consensus of visiting TB experts. Participants were also screened for Hansen's disease (HD) and diabetes mellitus (DM). For persons aged ≥21 years, blood pressure, cholesterol, and blood glucose were assessed. Results A total of 5,166 persons (90.0 % of target population) completed screening leading to the identification of 39 new cases of TB (755/100,000) and 14 persons with HD (270/100,000). DM was detected in 1,096 persons (27 %), including in 351 persons not previously diagnosed. The rate of hypertension was 61 % and of hypercholesterolemia was 15 %. New or prevalent TB diagnosis was associated with newly diagnosed or history of DM (aOR 4.68, 2.15-10.20). Conclusions In Ebeye, an integrated TB screening campaign found TB, HD, DM, and hypertension. TB and DM were strongly associated.
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Affiliation(s)
- Richard J. Brostrom
- Centers for Disease Control and Prevention, Division of TB Elimination, Atlanta, GA, United States of America
- Hawaii Department of Health, TB Control Program, Honolulu, HI, United States of America
| | - Angela Largen
- Hawaii Department of Health, TB Control Program, Honolulu, HI, United States of America
| | | | | | - Seiji Yamada
- University of Hawaii Department of Family Medicine and Community Health, Honolulu, HI, United States of America
| | - Subhash Yadav
- World Health Organization, Western Pacific Region, Suva, Fiji
| | - Eunyoung Ko
- World Health Organization, Western Pacific Region, Suva, Fiji
| | - Jon V. Warkentin
- Formerly of Tennessee Department of Health, TB Control Program, Nashville, TN, United States of America
| | - Terence L. Chorba
- Centers for Disease Control and Prevention, Division of TB Elimination, Atlanta, GA, United States of America
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Ma WW, Wang LC, Zhao DA, Wei N, Cui JW, Li SJ. Analysis of T-lymphocyte subsets and risk factors in children with tuberculosis. Tuberculosis (Edinb) 2024; 146:102496. [PMID: 38401266 DOI: 10.1016/j.tube.2024.102496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/06/2024] [Accepted: 02/19/2024] [Indexed: 02/26/2024]
Abstract
BACKGROUND Tuberculosis (TB) is not only related to infection but also involves immune factors. This study explores the changes in T-lymphocyte subsets in children with TB who are human immunodeficiency virus (HIV)-negative and examines their relationship using chest computed tomography (CT) scans. Additionally, the study identifies risk factors for severe TB (STB) in children and establishes relevant risk prediction models. METHODS We recruited 235 participants between 2018 and 2022, comprising 176 paediatric patients with TB who were HIV-negative and 59 age-matched children with bacterial community-acquired pneumonia (CAP). We quantitatively analysed and compared T-lymphocyte subsets between the two groups and among different types of TB infection. Both univariate and multivariate analyses of clinical and laboratory characteristics were conducted to identify independent risk factors for STB in children and to establish a risk prediction model. RESULTS The absolute counts of CD3, CD4 and CD8 T-cells in children with TB infection decreased significantly compared with bacterial CAP. The percentage of CD8 T-cells increased, whereas the percentage of CD4 T-cells did not change significantly. The absolute count of CD3, CD4 and CD8 T-cells in extrapulmonary TB (EPTB) was significantly higher than in extra-respiratory TB, with unchanged subset percentages. According to chest CT lesion classification, CD4 T-cell counts decreased significantly in S3 compared with S1 or S2, with no significant change in CD3 and CD8 T-cell counts and percentages. No significant differences were observed in lymphocyte subset counts and percentages between S1 and S2. Univariate analyses indicated that factors such as age, symptom duration, white blood cell count, platelet count, neutrophil-to-lymphocyte ratio (NLR), erythrocyte sedimentation rate, prealbumin level, albumin level, globulin level, albumin/globulin (A/G) ratio, high-sensitivity C-reactive protein (Hs-CRP) level and CD4 and CD8 T-cell counts are associated with STB. Multivariate logistic regression analysis revealed that age, Hs-CRP level, NLR, symptom duration and A/G ratio are independent risk factors for STB in children. Increased age, Hs-CRP levels and NLR, along with decreased A/G, correlate with increased susceptibility to STB. A nomogram model, based on these independent risk factors, demonstrated an area under the receiver operating characteristics curve of 0.867 (95% CI: 0.813-0.921). Internal verification confirmed the model's accuracy, with the calibration curve approaching the ideal and the Hosmer-Lemeshow goodness-of-fit test showing consistent results (χ2 = 12.212, p = 0.142). CONCLUSION In paediatric patients with TB, the absolute counts of all lymphocyte subsets were considerably reduced compared with those in patients with bacterial CAP. Clinicians should consider the possibility of EPTB infection in addition to respiratory infections in children with TB who have higher CD3, CD4 and CD8 T-cell counts than the ERTB group. Furthermore, CD4 T-cell counts correlated closely with the severity of chest CT lesions. Age, symptom duration, A/G ratio, Hs-CRP level and NLR were established as independent risk factors for STB. The nomogram model, based on these factors, offers effective discrimination and calibration in predicting STB in children.
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Affiliation(s)
- Wei-Wei Ma
- The First Clinical College of Xinxiang Medical University, Henan, Xinxiang, 453000, China
| | - Ling-Chao Wang
- The First Clinical College of Xinxiang Medical University, Henan, Xinxiang, 453000, China
| | - De-An Zhao
- The First Clinical College of Xinxiang Medical University, Henan, Xinxiang, 453000, China
| | - Na Wei
- The First Clinical College of Xinxiang Medical University, Henan, Xinxiang, 453000, China
| | - Jun-Wei Cui
- The First Clinical College of Xinxiang Medical University, Henan, Xinxiang, 453000, China
| | - Shu-Jun Li
- The First Clinical College of Xinxiang Medical University, Henan, Xinxiang, 453000, China.
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Izudi J, Bajunirwe F, Cattamanchi A. Negative effects of undernutrition on sputum smear conversion and treatment success among retreatment cases in Uganda: A quasi-experimental study. J Clin Tuberc Other Mycobact Dis 2024; 35:100422. [PMID: 38434999 PMCID: PMC10907175 DOI: 10.1016/j.jctube.2024.100422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
Rationale The causal relationship between undernutrition and response to anti-tuberculosis (TB) treatment and TB treatment outcomes among people with retreatment TB is understudied. Objective To evaluate the effect of undernutrition on treatment success and sputum smear conversion among people with retreatment drug-susceptible TB in Kampala, Uganda. Methods We conducted a quasi-experimental study utilizing propensity score weighting among people with retreatment drug-susceptible TB aged ≥ 15 years treated between 2012 and 2022 in Kampala. The primary exposure was undernutrition assessed using the mid-upper arm circumference at the time of TB diagnosis. The primary outcome was treatment success defined as cure or treatment completion at month 6. Sputum smear conversion was the secondary outcome and was measured as a change in sputum smear status from positive to negative at months 2, 5, and 6. We estimated the causal effect of undernutrition on the outcomes using a propensity-score weighted modified Poisson regression model with robust error variance. Measurements and main results Of the 605 participants, 432 (71.4 %) were male, 215 (35.5 %) were aged 25-34 years, 427 (70.6 %) had bacteriologically confirmed pulmonary TB, 133 (22.0 %) were undernourished and 398 (65.8 %) achieved treatment success. Of participants with bacteriologically confirmed pulmonary TB, 232 (59.0 %), 327 (59.3 %), and 360 (97.6 %) achieved sputum smear conversion at months 2, 5, and 6, respectively. Undernutrition reduced treatment success (RR 0.42, 95 % CI 0.32-0.55) as well as sputum smear conversion at months 2 (RR 0.45, 95 % CI 0.42-0.49) and 5 (RR 0.46, 95 % CI 0.43-0.51) but not month 6 (RR 0.99, 95 % CI 0.97-1.02). Conclusion Undernutrition negatively impacts treatment outcomes. Therefore, nutritional assessment should be an integral component of TB care, with nutritional counseling and support offered to those undernourished to optimize their TB treatment response and outcomes.
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Affiliation(s)
- Jonathan Izudi
- Department of Community Health, Mbarara University of Science and Technology, Mbarara, Uganda
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Uganda
| | - Francis Bajunirwe
- Department of Community Health, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Adithya Cattamanchi
- Division of Pulmonary Diseases and Critical Care Medicine, University of California Irvine, Irvine, CA, USA
- Center for Tuberculosis, University of California San Francisco, San Francisco, CA, USA
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12
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Yellappa V, Moray K, Heitkamp P, Shyam Klinton J. Building a virtual community of practice - The evolution of the TBPPM learning network, India chapter. J Clin Tuberc Other Mycobact Dis 2024; 35:100419. [PMID: 38414582 PMCID: PMC10897910 DOI: 10.1016/j.jctube.2024.100419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024] Open
Abstract
India's National Tuberculosis (TB) Elimination Program strategically involves private providers to achieve its 2025 goal of ending TB. The government's patient-provider support agency scheme (PPSA) aims to expand the Public-Private Mix (PPM) strategy using domestic resources, though challenges persist in cross-learning and documentation. The TB Public Private Mix Learning Network (TBPPM-LN) launched its India chapter in 2021, connecting PPM stakeholders virtually. With 600 + members, TBPPM-India, acting as a digital Community of Practice, is pivotal in fostering a learning culture, leading knowledge-sharing initiatives, and disseminating TBPPM field innovations, contributing significantly to India's intensified efforts against TB.
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Affiliation(s)
| | - Kusum Moray
- TBPPM Learning Network - India Chapter, India
| | - Petra Heitkamp
- TBPPM Learning Network, Montreal, Canada
- McGill International TB Centre, Montreal, Canada
| | - Joel Shyam Klinton
- TBPPM Learning Network, Montreal, Canada
- McGill International TB Centre, Montreal, Canada
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13
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Wang Z, Zhao S, Zhang A, Quan B, Duan C, Liang M, Yang J. Trends of type 2 diabetes with pulmonary tuberculosis patients,2013-2022, and changes after the coronavirus disease 2019 (COVID-19) pandemic. Tuberculosis (Edinb) 2024; 146:102499. [PMID: 38442538 DOI: 10.1016/j.tube.2024.102499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 02/13/2024] [Accepted: 02/24/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND To describe the trends of Type 2 Diabetes with Pulmonary Tuberculosis (T2DM-TB) patients from 2013 to 2022 and to investigate the impact of COVID-19 lockdown on glycemic control and associated factors in T2DM-TB. METHODS In this population-based study of the First Affiliated Yijishan Hospital of Wannan Medical College in China, we described the 10-year trends of patients diagnosed with T2DM-TB. We included patients diagnosed with TB, T2DM-TB and T2DM-TB patients for comparative analysis, aged 15 years or older. Data were missing, and both multidrug-resistant (MDR) TB patients and non-T2DM patients were excluded from our study. RESULTS We pooled Type 2 Diabetes (T2DM) and Tuberculosis (TB) data from The First Affiliated Yijishan Hospital of Wannan Medical College in China, gathered between January 1, 2013, and December 31, 2022. The data included 14,227 T2DM patients, 6130 TB patients, and 982 T2DM-TB patients. During the past 10 years, the number of inpatients with TB decreased, while the number of patients with T2DM and T2DM-TB increased year by year. To rule out any influence factors, we analyzed the ratio of the three groups. The ratio of TB/T2DM decreased year by year (p < 0.05), while the ratio of TB-T2DM/TB increasing year by year (p = 0.008). During the COVID-19 epidemic period, there was no significant change in the ratio of TB-T2DM/T2DM (p = 0.156). There was no significant change in the proportion of male patients with TB and TB-T2DM (p = 0.325; p = 0.190), but the proportion of male patients with T2DM showed an increasing trend (p < 0.001). The average age of TB patients over the past 10 years was 54.5 ± 18.4 years and showed an increasing trend year by year (p < 0.001). However, there was no significant change in the age of T2DM or TB-T2DM patients (p = 0.064; p = 0.241). Patients data for the first (2013-2017) and the last (2018-2022) five years were compared. We found that the number of T2DM and TB-T2DM in the last five years was significantly higher than in the first five years, but the number of TB was significantly lower than in the first five years. There is a significant statistical difference in the proportion of TB/T2DM and TB-T2DM/TB, which is similar to the previous results. The average age (56.0 ± 17.6 years) of TB patients in the last five years is significantly higher than in the first five years (53.1 ± 18.9) (p < 0.001). The number of male patients with T2DM in the last five years is higher than that in the first five years, with significant difference (p < 0.001). CONCLUSION The trends of T2DM-TB among hospitalized TB patients have increased significantly over the past 10 years, which may be related to the increase in the number of T2DM cases. The COVID-19 pandemic has been effective in controlling the transmission of TB, but it has been detrimental to the control of T2DM. Male patients with T2DM and elderly TB patients are the key populations for future prevention and control efforts.
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Affiliation(s)
- Zijian Wang
- Department of Infectious Diseases, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China
| | - Sheng Zhao
- Department of Infectious Diseases, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China
| | - Aiping Zhang
- Department of Infectious Diseases, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China
| | - Bin Quan
- Department of Infectious Diseases, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China
| | - Chun Duan
- Department of Infectious Diseases, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China
| | - Manman Liang
- Department of Infectious Diseases, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China
| | - Janghua Yang
- Department of Infectious Diseases, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China.
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14
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Abbasian S, Heidari H, Abbasi Tadi D, Kardan-Yamchi J, Taji A, Darbandi A, Asadollahi P, Maleki A, Kazemian H. Epidemiology of first- and second-line drugs-resistant pulmonary tuberculosis in Iran: Systematic review and meta-analysis. J Clin Tuberc Other Mycobact Dis 2024; 35:100430. [PMID: 38560029 PMCID: PMC10981085 DOI: 10.1016/j.jctube.2024.100430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024] Open
Abstract
Drug resistance among Mycobacterium tuberculosis (MTB) strains is a growing concern in developing countries. We conducted a comprehensive search for relevant studies in Iran on PubMed, Scopus, and Embase until June 12, 2020. Our study focused on determining the prevalence of antibiotic resistance in MTB isolates, with subgroup analyses based on year, location, and drug susceptibility testing (DST) methods. Statistical analyses were performed using STATA software. Our meta-analysis included a total of 47 articles. Among new TB cases, we found the following prevalence rates: Any-resistance to first-line drugs: 31 % (95 % CI, 24-38), mono-drug resistance: 15 % (95 % CI, 10-22), and multidrug resistance to first-line drugs: 6 % (95 % CI, 4-8). There was a significant variation in the rate of MDR among new TB cases based on the year of publication, location, and DST methods (P < 0.0001). We observed substantial variability in multidrug-resistant TB rates among new cases across the studies. Stratified analyses revealed that publication years and DST methods significantly affected resistance rates. Studies from southern and central Iran reported higher any-drug resistance rates, suggesting regional differences. Among retreatment cases, the prevalence rates were as follows: Any resistance: 68 % (95 % CI 58-78), mono-resistance: 19 % (95 % CI 7-34), multidrug resistance: 28 % (95 % CI 15-43). Our study revealed that the prevalence of drug-resistant TB (DR-TB) among TB cases in Iran is higher than the global average. Particularly, MDR-TB among retreatment TB cases is a significant public health issue.
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Affiliation(s)
- Sara Abbasian
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Hamid Heidari
- Department of Microbiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Danyal Abbasi Tadi
- Department of Veterinary, Azad University of Shahr-e Kord, Shahr-e Kord, Iran
| | - Jalil Kardan-Yamchi
- Quality Control and Screening Management Office, Deputy of Technical and New Technologies, Iranian Blood Transfusion Organization, Tehran, Iran
| | - Asieh Taji
- International Campus, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Atieh Darbandi
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Parisa Asadollahi
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Abbas Maleki
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Hossein Kazemian
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
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15
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Dworkin F, Easton AV, Alex B, Nilsen D. Acquired rifamycin resistance among patients with tuberculosis and HIV in new York City, 2001-2023. J Clin Tuberc Other Mycobact Dis 2024; 35:100429. [PMID: 38560028 PMCID: PMC10979258 DOI: 10.1016/j.jctube.2024.100429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024] Open
Abstract
Introduction Acquired rifamycin resistance (ARR) in tuberculosis (TB) has been associated with HIV infection and can necessitate complicated TB treatment regimens, particularly in people living with HIV (PLWH). This work examines clinical characteristics and treatment outcomes of PLWH who developed ARR from 2001 to 2023 in New York City (NYC) to inform best practices for treating these patients. Methods PLWH who developed ARR 2001-2023 were identified from the NYC TB registry. Results Sixteen PLWH developed ARR; 15 were diagnosed 2001-2009 and the 16th was diagnosed in 2017. Median CD4 count was 48/mm3. On initial presentation, 14 had positive sputum cultures; of these, 12 culture-converted prior to developing ARR. Ten patients completed a course of TB treatment but subsequently relapsed; in six of these cases, ARR was discovered upon relapse, triggering treatment with a non-rifamycin-containing regimen, while in the other four, ARR was discovered during a second round of rifamycin-containing treatment. Three patients were lost to follow-up during their initial course of TB treatment and later returned to care; after being restarted on a rifamycin-containing regimen, ARR was discovered. Finally, three patients culture-converted during their first course of treatment but subsequently had cultures that grew rifamycin-resistant Mycobacterium tuberculosis prior to treatment completion, leading to changes in their treatment regimens. Among the 16 patients, eight died before being cured of TB, seven successfully completed treatment, and one was lost to follow-up. Conclusions PLWH should be monitored closely for the development of ARR during treatment for TB, and sputum culture conversion should be interpreted cautiously in this group. Collecting a final sputum sample may be especially important for PLWH, as treatment failure and relapse were common in this population. The decrease in the number of cases of ARR among PLWH during the study period may reflect the decrease in the total number of PLWH diagnosed with TB in NYC in recent years, improved immune status of PLWH due to increased uptake of antiretroviral drugs, and improvements in the way anti-TB regimens are designed for PLWH (such as recommending daily rather than intermittent rifamycin dosing).
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Affiliation(s)
- Felicia Dworkin
- New York City Department of Health and Mental Hygiene, 42-09 28th St., Long Island City, NY, 11101-4132, United States
| | - Alice V. Easton
- New York City Department of Health and Mental Hygiene, 42-09 28th St., Long Island City, NY, 11101-4132, United States
| | - Byron Alex
- New York City Department of Health and Mental Hygiene, 42-09 28th St., Long Island City, NY, 11101-4132, United States
| | - Diana Nilsen
- New York City Department of Health and Mental Hygiene, 42-09 28th St., Long Island City, NY, 11101-4132, United States
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16
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Miyakawa R, Louie J, Keh C, Chen L, Javid B, Ernst JD, Goswami N, Chow FC. A teenage girl with altered mental status and paraparesis. J Clin Tuberc Other Mycobact Dis 2024; 35:100425. [PMID: 38468819 PMCID: PMC10926304 DOI: 10.1016/j.jctube.2024.100425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
A teenage girl presented with fever and altered mental status. MRI showed diffuse leptomeningeal enhancement of the brain and spine. She was diagnosed by a positive cerebrospinal fluid (CSF) culture with tuberculous (TB) meningitis and was started on anti-TB medications and corticosteroids. Her mental status improved, but she was noted to have proximal weakness of the lower extremities. In the course of tapering corticosteroids at week 11 of anti-TB therapy, she became acutely confused and febrile. MRI demonstrated interval development of tuberculomas in the brain and a mass lesion in the thoracic spine causing cord compression. Given the clinical picture was suggestive of a paradoxical reaction, the dose of corticosteroids was increased. Infliximab was added when repeat MRI revealed enlargement of the mass lesion in the spine with worsening cord compression. She was successfully tapered off of corticosteroids. Over several months, the patient's motor function recovered fully, and she returned to ambulating without assistance.
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Affiliation(s)
- Ryo Miyakawa
- Department of Pediatrics, University of California, San Francisco, USA
| | - Janice Louie
- Department of Medicine, University of California, San Francisco, USA
- Department of Public Health, San Francisco, USA
| | - Chris Keh
- Department of Medicine, University of California, San Francisco, USA
- California Department of Public Health, USA
| | - Lisa Chen
- Department of Medicine, University of California, San Francisco, USA
- Curry International Tuberculosis Center, USA
| | - Babak Javid
- Department of Medicine, University of California, San Francisco, USA
| | - Joel D. Ernst
- Department of Medicine, University of California, San Francisco, USA
| | | | - Felicia C. Chow
- Department of Medicine, University of California, San Francisco, USA
- Department of Neurology, University of California, San Francisco, USA
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17
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Churchman LR, Beckett JR, Tan L, Woods K, Doherty DZ, Ghith A, Bernhardt PV, Bell SG, West NP, De Voss JJ. Synthesis of steroidal inhibitors for Mycobacterium tuberculosis. J Steroid Biochem Mol Biol 2024; 239:106479. [PMID: 38346478 DOI: 10.1016/j.jsbmb.2024.106479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/23/2024] [Accepted: 02/07/2024] [Indexed: 02/19/2024]
Abstract
Oxidised derivatives of cholesterol have been shown to inhibit the growth of Mycobacterium tuberculosis (Mtb). The bacteriostatic activity of these compounds has been attributed to their inhibition of CYP125A1 and CYP142A1, two metabolically critical cytochromes P450 that initiate degradation of the sterol side chain. Here, we synthesise and characterise an extensive library of 28 cholesterol derivatives to develop a structure-activity relationship for this class of inhibitors. The candidate compounds were evaluated for MIC with virulent Mtb and in binding studies with CYP125A1 and CYP142A1 from Mtb.
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Affiliation(s)
- Luke R Churchman
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - James R Beckett
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Lendl Tan
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Kyra Woods
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Daniel Z Doherty
- Department of Chemistry, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Amna Ghith
- Department of Chemistry, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Paul V Bernhardt
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Stephen G Bell
- Department of Chemistry, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Nicholas P West
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - James J De Voss
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia.
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Rajendran P, Jayabal L, Venkatesan M, Kumar MP, Ramalingam R, Sivaraman P, Fredrick A, Shanmugam S. Assessing the utility of Truenat in extrapulmonary tuberculosis diagnosis - A NRL's experience. J Clin Tuberc Other Mycobact Dis 2024; 35:100420. [PMID: 38440213 PMCID: PMC10909875 DOI: 10.1016/j.jctube.2024.100420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024] Open
Abstract
Background Diagnosis of extra pulmonary TB (EPTB) remains a big challenge. While data on utility of Xpert testing in EPTB diagnosis is enormous, there is limited data on Truenat MTB testing. Aim In this study we aimed to evaluate the usefulness of Truenat in EPTB diagnosis. Materials and methods The study included patients suspected and/or treated for EPTB located from Chennai district during the year 2021-2022. All processed EPTB samples were subjected to smear microscopy, culture and Truenat MTB testing. Results Of the 195 samples tested, 38 (19.4%) samples were positive for EPTB by any one of the diagnostic methods (smear, culture, microscopy). Out of these 38, 16 (42.1 %) were positive for MTB by Truenat and negative by Culture, 12 (31.5%) were positive by culture but negative by Truenat and 8 (21%) were positive by both Truenat and/or smear and culture. The sensitivity and specificity of the test was calculated with the composite reference standard (Culture (exclusion of colonies as positives), clinical conditions, and smear) and was found to be 60% and 100% respectively. Conclusion Truenat MTB test is a cost-effective rapid molecular test that can be used only for the diagnosis of presumptive EPTB and not on follow-up samples.
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Affiliation(s)
- Priya Rajendran
- ICMR -National Institute for Research in Tuberculosis, Chennai, India
| | - Lavanya Jayabal
- District Tuberculosis Office, National Tuberculosis Elimination Programme, Chennai, India
| | | | - Michel Prem Kumar
- ICMR -National Institute for Research in Tuberculosis, Chennai, India
| | | | - P Sivaraman
- ICMR -National Institute for Research in Tuberculosis, Chennai, India
| | - Asha Fredrick
- State Tuberculosis Office, National Tuberculosis Elimination Programme, Chennai, India
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19
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Chen EC, Owaisi R, Goldschmidt L, Maimets IK, Daftary A. Patient perceptions of video directly observed therapy for tuberculosis: a systematic review. J Clin Tuberc Other Mycobact Dis 2024; 35:100406. [PMID: 38380432 PMCID: PMC10877938 DOI: 10.1016/j.jctube.2023.100406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024] Open
Abstract
Virtual modes of tuberculosis (TB) treatment monitoring have become increasingly relevant in the last decade with the advancements and increasing accessibility of technology. We conducted a systematic review comparing people with TB's perceptions of standard directly observed therapy (DOT) versus video directly observed therapy (vDOT). Studies were obtained from MEDLINE and EMBASE between January 1, 1974 and February 4, 2021. Of the 22 articles reviewed, a qualitative thematic analysis was performed, drawing on common themes from people with TB's perception of their care. 21 studies showed relative preference for and acceptance of vDOT over DOT. Factors that increased acceptability toward vDOT included cost and time saving, personal sense of empowerment, convenience, and privacy. Studies also showed greater adherence to treatment and subsequent improved health outcomes. vDOT has the potential to be an empowering, person-centered treatment modality for TB therapy. The role of social determinants such as place of residence, access to technology, and patient-provider communication requires further exploration.
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Affiliation(s)
- En Chi Chen
- Dahdaleh Institute of Global Health Research, York University, 88 The Pond Rd Suite 2150, North York, ON M3J 2S5, Canada
- Cumming School of Medicine, University of Calgary, 3330 Hospital Dr NW, Calgary, AB T2N 4N1, Canada
| | - Rumia Owaisi
- Dahdaleh Institute of Global Health Research, York University, 88 The Pond Rd Suite 2150, North York, ON M3J 2S5, Canada
- School of Global Health, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
| | - Leah Goldschmidt
- Dahdaleh Institute of Global Health Research, York University, 88 The Pond Rd Suite 2150, North York, ON M3J 2S5, Canada
- School of Global Health, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
| | - Ilo-Katryn Maimets
- Steacie Science and Engineering Library, York University, 136 Campus Walk, North York, ON M3J 1P3, Canada
| | - Amrita Daftary
- Dahdaleh Institute of Global Health Research, York University, 88 The Pond Rd Suite 2150, North York, ON M3J 2S5, Canada
- School of Global Health, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban 4001, South Africa
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Olowoyo KS, Esan DT, Adeyanju BT, Olawade DB, Oyinloye BE, Olowoyo P. Telemedicine as a tool to prevent multi-drug resistant tuberculosis in poor resource settings: Lessons from Nigeria. J Clin Tuberc Other Mycobact Dis 2024; 35:100423. [PMID: 38435000 PMCID: PMC10907208 DOI: 10.1016/j.jctube.2024.100423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
Background This mini review aims to provide an overview of the role of telemedicine in preventing multi-drug resistant tuberculosis (MDR-TB) in Nigeria. The specific objectives include examining the potential benefits of telemedicine, identifying the challenges associated with its implementation, and highlighting the importance of addressing infrastructure limitations and data privacy concerns. Methods This minireview is based on a comprehensive analysis of existing literature, including scholarly articles, and reports,. A systematic search was conducted using electronic databases, such as PubMed and Google Scholar, to identify relevant publications related to telemedicine and MDR-TB prevention in Nigeria. The selected articles were assessed for their relevance, and key findings were synthesized to provide an overview of the role of telemedicine in addressing the challenges of MDR-TB in Nigeria. Results The review demonstrates that telemedicine has the potential to significantly contribute to MDR-TB prevention efforts in Nigeria. The benefits of telemedicine include improved access to specialized care, enhanced patient adherence to treatment, and potential cost savings. However, challenges such as infrastructure limitations and data privacy concerns need to be addressed for successful implementation. Integrating telemedicine into the healthcare system has the potential to strengthen MDR-TB prevention, particularly in underserved areas, including within Nigeria. Specifically, the integration of telemedicine into the healthcare system can enhance access to specialized care, improve patient adherence, and potentially reduce costs associated with MDR-TB management. Conclusions Addressing infrastructure challenges, ensuring data privacy and security, and fostering trust among healthcare providers and patients are critical for successful implementation of telemedicine. Further research and policy frameworks are needed to guide the effective implementation and scale-up of telemedicine in MDR-TB prevention efforts in Nigeria.
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Affiliation(s)
- Kikelomo S. Olowoyo
- Department of Nursing Science, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
- Department of Internal Medicine, Ekiti State University Teaching Hospital, Ado-Ekiti, Nigeria
| | - Deborah T. Esan
- Faculty of Nursing Sciences, College of Health Sciences, Bowen University, Iwo, Nigeria
| | - Benedict T. Adeyanju
- Department of Obstetrics and Gynecology, Afe Babalola University/ABUAD Multi-System Hospital, Ado-Ekiti, Nigeria
| | - David B. Olawade
- Department of Allied and Public Health, School of Health, Sport and Bioscience, University of East London, London, United Kingdom
| | - Babatunji E. Oyinloye
- Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti, Nigeria and Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, South Africa
| | - Paul Olowoyo
- Department of Internal Medicine, Federal Teaching Hospital Ido-Ekiti, Nigeria/Afe Babalola University, Ado-Ekiti, Nigeria
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Takamiya M, Takarinda K, Balachandra S, Musuka G, Radin E, Hakim A, Pearson ML, Choto R, Sandy C, Maphosa T, Rogers JH. Missed opportunities for TB diagnostic testing among people living with HIV in Zimbabwe: Cross-sectional analysis of the Zimbabwe Population-based HIV Impact Assessment (ZIMPHIA) survey 2015-16. J Clin Tuberc Other Mycobact Dis 2024; 35:100427. [PMID: 38516197 PMCID: PMC10955630 DOI: 10.1016/j.jctube.2024.100427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024] Open
Abstract
Background Using data from the Zimbabwe Population-based HIV Impact Assessment survey 2015-2016, we examined the TB care cascade and factors associated with not receiving TB diagnostic testing among adult PLHIV with TB symptoms. Methods Statistical Analysis was limited to PLHIV aged 15 years and older in HIV care. Weighted logistic regression with not receiving TB testing as outcome was adjusted for covariates with crude odd ratios (ORs) with p < 0.25. All analyses accounted for multistage survey design. Results Among 3507 adult PLHIV in HIV care, 2288 (59.7 %, 95 % CI:58.1-61.3) were female and 2425 (63.6 %, 95 % CI:61.1-66.1) lived in rural areas. 1197(48.7 %, 95 % CI:46.5-51.0) reported being screened for TB symptoms at their last HIV care visit. In the previous 12 months, 639 (26.0 %, 95 % CI:23.9-28.1) reported having symptoms and of those, 239 (37.8 %, 95 % CI:33.3-42.2) received TB testing. Of PLHIV tested for TB, 36 (49.5 %, 95 % CI:35.0-63.1) were diagnosed with TB; 32 (90.3 %, 95 % CI:78.9-100) of those diagnosed with TB received treatment. Never having used IPT was associated with not receiving TB testing. Conclusion The results suggest suboptimal utilization of TB screening and diagnostic testing among PLHIV. New approaches are needed to reach opportunities missed in the HIV/TB integrated services.
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Affiliation(s)
| | | | | | | | | | - Avi Hakim
- U.S. Centers for Disease Control and Prevention (CDC), Atlanta, GA, United States
| | - Michele L. Pearson
- U.S. Centers for Disease Control and Prevention (CDC), Atlanta, GA, United States
| | - Regis Choto
- Ministry of Health and Child Care, Harare, Zimbabwe
| | | | - Talent Maphosa
- U.S. Centers for Disease Control and Prevention (CDC), Harare, Zimbabwe
| | - John H. Rogers
- U.S. Centers for Disease Control and Prevention (CDC), Harare, Zimbabwe
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Borborema MEDA, Miranda DEDO, de Lucena TMC, de Lorena VMB, Rabello MCDS, de Azevêdo Silva J. Steroid immune responsive gene regulation in Mycobacterium tuberculosis infection in vitro. Tuberculosis (Edinb) 2024; 146:102497. [PMID: 38408402 DOI: 10.1016/j.tube.2024.102497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 02/06/2024] [Accepted: 02/19/2024] [Indexed: 02/28/2024]
Abstract
Tuberculosis (TB) is an infectious disease displaying a multifactorial pathology. The immunomodulatory role attributed to steroid hormones, such as vitamin D3 (VD3) and 17β-estradiol (E2), highlighted the importance of these hormones against Mycobacterium tuberculosis (Mtb) infection. In order to understand their influence upon gene expression of immune and inflammatory responsive genes against Mtb we tested it in vitro using peripheral blood mononuclear cells (PBMCs). Cells were pretreated with VD3 (50 ng/mL) or E2 (100 nM/mL) and co-cultured with H37Rv Mtb or stimulated with lipopolysaccharide from Escherichia coli (LPS). After 24 h and 72 h of co-culture the Mtb viability in macrophages test was performed, as well the total RNA isolation for gene expression analysis by RT-qPCR of the following target genes: NLRP3, DC-SIGN, IL-1β, and IL-10. We also measured IL-10, TNF, IFN-γ, IL-4, IL-6, and IL-2 supernatant levels. As the main results, we found that VD3 and E2 downregulated the expression of inflammatory genes NLRP3, IL-1β, and IL-10 expression in Mtb co-cultured cells. Finally, VD3 treatment increased the release of the cytokine IFN-γ in Mtb-infected cells, while E2 treatment inhibited the release of IL-10, TNF, IFN-γ, and IL-6. Therefore, we report an immunogenetic influence of VD3 and E2 upon Mtb co-culture.
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Affiliation(s)
- Maria Eduarda de Albuquerque Borborema
- Laboratory of Human Genetics and Molecular Biology, Genetics Department, Federal University of Pernambuco, Recife, Pernambuco, Brazil; Laboratory of Immunopathology Keizo Asami, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Débora Elienai de Oliveira Miranda
- Laboratory of Human Genetics and Molecular Biology, Genetics Department, Federal University of Pernambuco, Recife, Pernambuco, Brazil; Laboratory of Immunopathology Keizo Asami, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Thays Maria Costa de Lucena
- Laboratory of Human Genetics and Molecular Biology, Genetics Department, Federal University of Pernambuco, Recife, Pernambuco, Brazil; Laboratory of Immunopathology Keizo Asami, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | | | - Jaqueline de Azevêdo Silva
- Laboratory of Human Genetics and Molecular Biology, Genetics Department, Federal University of Pernambuco, Recife, Pernambuco, Brazil; Laboratory of Immunopathology Keizo Asami, Federal University of Pernambuco, Recife, Pernambuco, Brazil.
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23
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Zhang S, He C, Wan Z, Shi N, Wang B, Liu X, Hou D. Diagnosis of pulmonary tuberculosis with 3D neural network based on multi-scale attention mechanism. Med Biol Eng Comput 2024; 62:1589-1600. [PMID: 38319503 DOI: 10.1007/s11517-024-03022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 01/03/2024] [Indexed: 02/07/2024]
Abstract
This paper presents a novel multi-scale attention residual network (MAResNet) for diagnosing patients with pulmonary tuberculosis (PTB) by computed tomography (CT) images. First, a three-dimensional (3D) network structure is applied in MAResNet based on the continuity and correlation of nodal features on different slices of CT images. Secondly, MAResNet incorporates the residual module and Convolutional Block Attention Module (CBAM) to reuse the shallow features of CT images and focus on key features to enhance the feature distinguishability of images. In addition, multi-scale inputs can increase the global receptive field of the network, extract the location information of PTB, and capture the local details of nodules. The expression ability of both high-level and low-level semantic information in the network can also be enhanced. The proposed MAResNet shows excellent results, with overall 94% accuracy in PTB classification. MAResNet based on 3D CT images can assist doctors make more accurate diagnosis of PTB and alleviate the burden of manual screening. In the experiment, a called Grad-CAM was employed to enhance the class activation mapping (CAM) technique for analyzing the model's output, which can identify lesions in important parts of the lungs and make transparent decisions.
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Affiliation(s)
- Shidong Zhang
- Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding, 071002, China
| | - Cong He
- Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding, 071002, China.
| | - Zhenzhen Wan
- Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding, 071002, China
| | - Ning Shi
- Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding, 071002, China
| | - Bing Wang
- Department of Radiology, Beijing Chest Hospital, Capital Medical University, Beijing, 101149, China.
| | - Xiuling Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding, 071002, China
| | - Dailun Hou
- Department of Radiology, Beijing Chest Hospital, Capital Medical University, Beijing, 101149, China.
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Darmawan G, Liman LMS, Wibowo SAK, Hamijoyo L, Apriani L, Atik N, Alisjahbana B, Sahiratmadja E. Global tuberculosis disease and infection in systemic lupus erythematosus patients: A systematic review and meta-analysis. Lupus 2024; 33:555-573. [PMID: 38490946 DOI: 10.1177/09612033241239504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
BACKGROUND Tuberculosis (TB) is one of the most common infections among systemic lupus erythematosus (SLE) patients. We aimed to evaluate the global prevalence of TB infection and disease, its type, and medication risk factors in SLE patients. METHODS We searched PubMed, Science Direct, EBSCO, and Web of Science databases from inception to April 30, 2023, and included studies assessing TB among SLE patients. We estimated the prevalence of TB disease (including type of TB disease), TB infection, and SLE medication as TB risk factors. Meta-analysis was performed using Stata 14.2 and Review Manager 5.3. RESULTS Twenty-seven studies met the eligibility criteria. The global prevalence of TB disease was 4% (95% confidence interval (CI): 3-4%, n = 25) and TB infection was 18% (95% CI: 10-26%, n = 3). The pooled prevalence of pulmonary TB, extrapulmonary TB, and disseminated TB were 2% (95% CI: 2-3%, n = 20), 1% (95% CI: 1-2%, n = 17), and 1% (95% CI: 0-1%, n = 6), respectively. The 1-year cumulative glucocorticoid (GC) dose in SLE patients contracting TB was higher than in those without TB, having a mean difference of 2.56 (95% CI: 0.22-4.91, p < .00001, n = 3). The odd ratio of TB was 2.11 (95% CI: 1.01-4.41, p = .05, n = 3) in SLE patients receiving methylprednisolone (MP) pulse therapy as compared to those without MP pulse therapy. Other immunosuppressive agents were not significantly associated with TB. CONCLUSION TB prevalence in SLE was relatively high and associated with GC. Awareness of TB and lowering GC dose are warranted to alleviate the TB burden in SLE.
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Affiliation(s)
- Guntur Darmawan
- Doctoral Study Program, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
- Department of Internal Medicine, Faculty of Medicine, Krida Wacana Christian University, Jakarta, Indonesia
| | | | - Suryo Anggoro Kusumo Wibowo
- Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Laniyati Hamijoyo
- Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
| | - Lika Apriani
- Department of Public Health, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
| | - Nur Atik
- Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
| | - Bachti Alisjahbana
- Division of Infectious and Tropical Disease, Department of Internal Medicine, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
- Research Center for Care and Control of Infectious Disease, Universitas Padjadjaran, Bandung, Indonesia
| | - Edhyana Sahiratmadja
- Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
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Van Nguyen H, Binh Nguyen H, Thu Ha D, Thi Huong D, Ngoc Trung V, Thi Thuy Ngoc K, Huyen Trang T, Vu Thi Ngoc H, Trinh Thi Bich T, Le Pham Tien T, Nguyen Hong H, Phan Trieu P, Kim Lan L, Lan K, Ngoc Hue N, Thi Le Huong N, Le Thi Ngoc Thao T, Le Quang N, Do Dang Anh T, Hữu Lân N, Van Vinh T, Thi Minh Ha D, Thuong Dat P, Phuc Hai N, Crook DW, Thuy Thuong Thuong N, Viet Nguyen N, Thwaites GE, Walker TM. Rifampicin resistant Mycobacterium tuberculosis in Vietnam, 2020-2022. J Clin Tuberc Other Mycobact Dis 2024; 35:100431. [PMID: 38523706 PMCID: PMC10958107 DOI: 10.1016/j.jctube.2024.100431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024] Open
Abstract
Objective We conducted a descriptive analysis of multi-drug resistant tuberculosis (MDR-TB) in Vietnam's two largest cities, Hanoi and Ho Chi Minh city. Methods All patients with rifampicin resistant tuberculosis were recruited from Hanoi and surrounding provinces between 2020 and 2022. Additional patients were recruited from Ho Chi Minh city over the same time period. Demographic data were recorded from all patients, and samples collected, cultured, whole genome sequenced and analysed for drug resistance mutations. Genomic susceptibility predictions were made on the basis of the World Health Organization's catalogue of mutations in Mycobacterium tuberculosis associated with drug resistance, version 2. Comparisons were made against phenotypic drug susceptibility test results where these were available. Multivariable logistic regression was used to assess risk factors for previous episodes of tuberculosis. Results 233/265 sequenced isolates were of sufficient quality for analysis, 146 (63 %) from Ho Chi Minh City and 87 (37 %) from Hanoi. 198 (85 %) were lineage 2, 20 (9 %) were lineage 4, and 15 (6 %) were lineage 1. 17/211 (8 %) for whom HIV status was known were infected, and 109/214 (51 %) patients had had a previous episode of tuberculosis. The main risk factor for a previous episode was HIV infection (odds ratio 5.1 (95 % confidence interval 1.3-20.0); p = 0.021). Sensitivity for predicting first-line drug resistance from whole genome sequencing data was over 90 %, with the exception of pyrazinamide (85 %). For moxifloxacin and amikacin it was 50 % or less. Among rifampicin-resistant isolates, prevalence of resistance to each non-first-line drug was < 20 %. Conclusions Drug resistance among most MDR-TB strains in Vietnam's two largest cities is confined largely to first-line drugs. Living with HIV is the main risk factor among patients with MDR-TB for having had a previous episode of tuberculosis.
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Affiliation(s)
- Hung Van Nguyen
- National Lung Hospital, Hanoi, Viet Nam
- Vietnam National University, University of Medicine and Pharmacy, Viet Nam
| | | | | | | | | | | | | | - Ha Vu Thi Ngoc
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
| | | | | | - Hanh Nguyen Hong
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
| | - Phu Phan Trieu
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
| | - Luong Kim Lan
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
| | - Kim Lan
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
| | - Ngo Ngoc Hue
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
| | | | | | - Nguyen Le Quang
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
| | - Thu Do Dang Anh
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
| | | | | | | | | | | | - Derrick W. Crook
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Nguyen Thuy Thuong Thuong
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Nhung Viet Nguyen
- Vietnam National University, University of Medicine and Pharmacy, Viet Nam
| | - Guy E. Thwaites
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Timothy M. Walker
- Oxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
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AlHamawi R, Khader Y, Abaza H, Satyanarayana S, Wilson N, Saleh Abu Rumman A, Okkah K. Tuberculosis-related knowledge, practices, perceived stigma and discrimination among patients with tuberculosis: a cross-sectional study in Jordan. Infect Dis (Lond) 2024; 56:359-375. [PMID: 38329456 DOI: 10.1080/23744235.2024.2311292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/23/2024] [Indexed: 02/09/2024] Open
Abstract
BACKGROUND Tuberculosis knowledge, practices, and perceived stigma and discrimination among patients with tuberculosis are key factors for the management of the disease. OBJECTIVES The objectives of the study were to assess knowledge, practices, perceived stigma and discrimination, perceived family and health workers support, perceived level of satisfaction with healthcare services, delay in diagnosis/treatment and reasons for delay among patients with tuberculosis in Jordan. METHODS A cross-sectional study was conducted among patients who were under treatment for tuberculosis in Jordan in 2021. RESULTS This study included a total of 452 patients with tuberculosis. About 91.4% of patients had low to moderate overall tuberculosis-related knowledge score and 8.6% had high knowledge score. Almost two-thirds of patients (67.5%) had perceived a low level of stigma, 61 (13.5%) perceived a moderate level of stigma, and 86 (19.0%) perceived a high level of stigma. The majority (84.5%) of patients with tuberculosis thought that there was a delay in diagnosis and/or treatment of tuberculosis. CONCLUSION Our study showed gaps in tuberculosis knowledge and practices, high perceived stigma and discrimination, and perceived delay in diagnosis and treatment initiation,. Efforts within the national tuberculosis control program should be made to increase public awareness about the symptoms of tuberculosis and the importance of seeking early care.
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Affiliation(s)
- Rana AlHamawi
- Research and policy Global Health Development|Eastern Mediterranean Public Health Network, Amman, Jordan
| | - Yousef Khader
- Professor of Epidemiology, Medical Education and Biostatistics, Department of Community Medicine, Public Health, and Family Medicine/, Jordan University of Science & Technology, Irbid, Jordan
| | - Hiba Abaza
- Migration Health Division, International Organization for Migration (IOM) Amman, Jordan
| | - Srinath Satyanarayana
- Migration Health Division, International Organization for Migration (IOM) Amman, Jordan
| | - Nevin Wilson
- Migration Health Division, International Organization for Migration (IOM) Amman, Jordan
| | | | - Khaled Okkah
- Department of Chest Disease and Foreigners, Jordan Ministry of health, Jordan
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Lan QW, Chen HK, Huang ZM, Bao TY, Liang CJ, Yi RT, Huang YY, He YX, Huang XQ, Gu B, Guo XG, Zhang QW. Global, regional, and national time trends in incidence for tuberculosis, 1990-2019: An age-period-cohort analysis for the Global Burden of Disease 2019 study. Heart Lung 2024; 65:19-30. [PMID: 38377628 DOI: 10.1016/j.hrtlng.2024.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/08/2024] [Accepted: 01/25/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND Tuberculosis (TB) represents a significant global health concern, being the leading cause of mortality from a single infectious agent worldwide. The investigation of TB incidence and epidemiological trends is critical for evaluating the effectiveness of control strategies and identifying ongoing challenges. OBJECTIVES This study presents the trend in TB incidence across 204 countries and regions over a 30-year period. METHODS The study utilises data sourced from the Global Burden of Disease (GBD) database. The age cohort model and gender subgroup analysis were employed to estimate the net drift (overall annual percentage change), local drift (age annual percentage change), longitudinal age curve (expected age ratio), and cycle and cohort effect (relative risk of cycle and birth cohort) of TB incidence from 1990 to 2019. This approach facilitates the examination and differentiation of age, period, and cohort effects in TB incidence trends, potentially identifying disparities in TB prevention across different countries. RESULTS Over the past three decades, a general downward trend in TB incidence has been observed in most countries. However, in 15 of the 204 countries, the overall incidence rate is still on the rise (net drift ≥0.0 %) or stagnant decline (≥-0.5 %). From 1990 to 2019, the net drift of tuberculosis mortality ranged from -2.2 % [95 % confidence interval (CI): -2.33, -2.05] in high Socio-demographic Index (SDI) countries to -1.7 % [95 % CI: -1.81, -1.62] in low SDI countries. In some below-average SDI countries,men in the birth cohort are at a disadvantage and at risk of deterioration, necessitating comprehensive TB prevention and treatment. CONCLUSIONS While the global incidence of TB has declined, adverse period and cohort effects have been identified in numerous countries, raising questions about the adequacy of TB healthcare provision across all age groups. Furthermore, this study reveals gender disparities in TB incidence.
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Affiliation(s)
- Qi-Wen Lan
- Department of Clinical Laboratory Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China; Department of Medical Imageology, The Second Clinical School of Guangzhou Medical University, Guangzhou, PR China
| | - Hao-Kai Chen
- Department of Clinical Laboratory Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China; Department of Clinical Medicine, The Third Clinical School of Guangzhou Medical University, Guangzhou, PR China
| | - Ze-Min Huang
- Department of Clinical Laboratory Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China; Department of Clinical Medicine, The Third Clinical School of Guangzhou Medical University, Guangzhou, PR China
| | - Ting-Yu Bao
- Department of Clinical Laboratory Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China; Department of Clinical Medicine, The Third Clinical School of Guangzhou Medical University, Guangzhou, PR China
| | - Chuang-Jia Liang
- Department of Clinical Laboratory Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China; Department of Clinical Medicine, The Third Clinical School of Guangzhou Medical University, Guangzhou, PR China
| | - Rui-Ting Yi
- Department of Clinical Medicine, The Third Clinical School of Guangzhou Medical University, Guangzhou, PR China
| | - Yuan-Yi Huang
- Department of Clinical Medicine, The First Clinical School of Guangzhou Medical University, Guangzhou, PR China
| | - Ying-Xin He
- Department of Clinical Laboratory Medicine, Guangzhou Medical University, KingMed School of Laboratory Medicine, Guangzhou Medical University,Guangzhou, PR China
| | - Xu-Qi Huang
- Department of Clinical Medicine, The Sixth Clinical School of Guangzhou Medical University, Guangzhou, PR China
| | - Bing Gu
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, PR China.
| | - Xu-Guang Guo
- Department of Clinical Laboratory Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China; Department of Clinical Laboratory Medicine Guangdong Provincial Key Laboratory of Major Obstetric Diseases; Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology; The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, China; Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Dis-eases, King Med School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, 510000, China.
| | - Qing-Wei Zhang
- Division of Gastroenterology and Hepatology, NHC Key Laboratory of Digestive Diseases (Renji Hospital, Shanghai Jiaotong University School of Medicine), Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China.
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Glover NA, Ivanova O, Sathar F, Riess F, Shambhu RR, Mekota AM, Zurba L, Menezes C, Alexandra van Blydenstein S, Kalla I, Hoelscher M, Saathoff E, Charalambous S, Rachow A. Lung outcomes and related risk factors in patients after SARS-CoV-2 infection: a hospitalised single-centre cohort from Johannesburg, South Africa. EClinicalMedicine 2024; 71:102588. [PMID: 38623400 PMCID: PMC11016864 DOI: 10.1016/j.eclinm.2024.102588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/17/2024] Open
Abstract
Background Sequelae post-SARS-CoV-2 infection, including lung and functional impairment, pose a significant challenge post-recovery. We explored the burden and risk factors for post-COVID-19 sequelae in an African population with prevalent comorbidities including tuberculosis (TB) and HIV. Methods We conducted an observational cohort study on hospitalised adults with confirmed SARS-CoV-2 infection from 20 March to 06 October 2021 at Chris Hani Baragwanath Academic Hospital, South Africa. We collected data on comorbidities, and COVID-19 severity using the World Health Organization (WHO) clinical progression scale. Prospectively, we followed up all participants within 40-days post-discharge to assess body mass index (BMI), COVID-19 symptoms and quality of life using St George's Respiratory Questionnaire (SGRQ), 6-min walking-test (6MWT), and spirometry. A subsequent in-depth visit assessed plethysmography, diffusing capacity for the lung for carbon monoxide (DLCO), and high-resolution chest-CT. Findings We followed up 111 participants, where 65.8% were female, median age 50.5 years, and predominantly black-African (92.8%). Relevant comorbidities included TB disease (18.9%) and HIV infection (36%). SGRQ total scores were elevated in 78.9%, median 6MWT distance was reduced at 300 m (IQR 210-400), and nearly half (49.5%) exhibited spirometry findings below the lower limit of normal (LLN). In-depth pulmonary assessment for 61 participants revealed abnormalities in total lung capacity (31.6% <80% predicted), DLCO (53.4% <80% predicted), and chest-CT (86.7% abnormal). Significant risk factors for individual abnormal outcomes, adjusted for age and sex, were TB disease, HIV with CD4 <200 cells/mm3, BMI <18.5 kg/m2 and >35 kg/m2, and initial COVID-19 severity. Interpretation This study demonstrates substantial lung and functional morbidity within the first weeks post-COVID-19, particularly in individuals with pre-existing comorbidities including TB, HIV, and low or high BMI. Chest-CT and DLCO show best early potential at reflecting COVID-19-related pathologies. Funding The Bavarian State Ministry of Science and Arts.
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Affiliation(s)
| | - Olena Ivanova
- Division of Infectious Diseases and Tropical Medicine, LMU University Hospital, LMU Munich
| | | | - Friedrich Riess
- Division of Infectious Diseases and Tropical Medicine, LMU University Hospital, LMU Munich
| | - Rekha Rao Shambhu
- Division of Infectious Diseases and Tropical Medicine, LMU University Hospital, LMU Munich
| | - Anna-Maria Mekota
- Division of Infectious Diseases and Tropical Medicine, LMU University Hospital, LMU Munich
| | | | - Colin Menezes
- University of the Witwatersrand, Department of Internal Medicine, Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa
| | - Sarah Alexandra van Blydenstein
- University of the Witwatersrand, Department of Internal Medicine, Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa
| | - Ismail Kalla
- University of the Witwatersrand, Department of Internal Medicine, Charlotte Maxeke Johannesburg Academic Hospital, Johannesburg, South Africa
| | - Michael Hoelscher
- Division of Infectious Diseases and Tropical Medicine, LMU University Hospital, LMU Munich
- German Centre for Infection Research (DZIF), Partner Site Munich, Munich, Germany
- Unit Global Health, Helmholtz Zentrum München, German Research Centre for Environmental Health (HMGU), Neuherberg, Germany
| | - Elmar Saathoff
- Division of Infectious Diseases and Tropical Medicine, LMU University Hospital, LMU Munich
- German Centre for Infection Research (DZIF), Partner Site Munich, Munich, Germany
| | - Salome Charalambous
- The Aurum Institute, Johannesburg, South Africa
- School of Public Health, University of the Witwatersrand, Johannesburg, South Africa
| | - Andrea Rachow
- Division of Infectious Diseases and Tropical Medicine, LMU University Hospital, LMU Munich
- German Centre for Infection Research (DZIF), Partner Site Munich, Munich, Germany
- Unit Global Health, Helmholtz Zentrum München, German Research Centre for Environmental Health (HMGU), Neuherberg, Germany
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Menzies D, Obeng J, Hadisoemarto P, Ruslami R, Adjobimey M, Fisher D, Barss L, Bedingfield N, Long R, Paulsen C, Johnston J, Romanowski K, Cook VJ, Fox GJ, Nguyen TA, Valiquette C, Oxlade O, Fregonese F, Benedetti A. Sustainability and impact of an intervention to improve initiation of tuberculosis preventive treatment: results from a follow-up study of the ACT4 randomized trial. EClinicalMedicine 2024; 71:102546. [PMID: 38586588 PMCID: PMC10998081 DOI: 10.1016/j.eclinm.2024.102546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 01/24/2024] [Accepted: 02/29/2024] [Indexed: 04/09/2024] Open
Abstract
Background In a cluster randomized trial (clinicaltrials.gov: NCT02810678) a flexible but comprehensive health system intervention significantly increased the number of household contacts (HHC) identified and started on tuberculosis preventive treatment (TPT). A follow-up study was conducted one year later to test the hypotheses that these effects were sustained, and were reproducible with a simplified intervention. Methods We conducted a follow-up study from May 1, 2018 until April 30, 2019, as part of a multinational cluster randomized trial. Eight sites in 4 countries that had received the intervention in the original trial received no further intervention; eight other sites in the same countries that had not received the intervention (control sites in the original trial) now received a simplified version of the intervention. This consisted of repeated local evaluation of the Cascade of care for TB infection, and stakeholder decision making. The number of HHC identified and starting TPT were repeatedly measured at all 16 sites and expressed as rates per 100 newly diagnosed index TB patients. The sustained effect of the original intervention was estimated by comparing these rates after the intervention in the original trial with the last 6 months of the follow-up study. The reproducibility was estimated by comparing the pre-post intervention changes in rates at sites receiving the original intervention with the pre-post changes in rates at sites receiving the later, simplified intervention. Findings With regard to the sustained impact of the original intervention, compared to the original post-intervention period, the number of HHC identified and treated per 100 newly diagnosed TB patients was 10 more (95% confidence interval: 84 fewer to 105 more), and 1 fewer (95% CI: 22 fewer to 20 more) respectively up to 14 months after the end of the original intervention. With regard to the reproducibility of the simplified intervention, at sites that had initially served as control sites, the number of HHC identified and treated per 100 TB patients increased by 33 (95% CI: -32, 97), and 16 (-69, 100) from 3 months before, to up to 6 months after receiving a streamlined intervention, although differences were larger, and significant if the post-intervention results were compared to all pre-intervention periods. Interpretation Up to one year after it ended, a health system intervention resulted in sustained increases in the number of HHC identified and starting TPT. A simplified version of the intervention was associated with non-significant increases in the identification and treatment of HHC. Inferences are limited by potential bias due to other temporal effects, and the small number of study sites. Funding Funded by the Canadian Institutes of Health Research (Grant number 143350).
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Affiliation(s)
- Dick Menzies
- McGill International TB Centre, Montreal Chest Institute and Research Institute of the MUHC, Canada
- Department of Epidemiology & Biostatistics, McGill University, Canada
| | | | | | - Rovina Ruslami
- Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
| | - Menonli Adjobimey
- Centre National Hospitalier Universitaire de Pneumo-Phtisiologie de Cotonou, Benin
| | - Dina Fisher
- Department of Medicine, Cumming School of Medicine, University of Calgary, Canada
| | - Leila Barss
- Department of Medicine, Cumming School of Medicine, University of Calgary, Canada
| | - Nancy Bedingfield
- Department of Medicine, Cumming School of Medicine, University of Calgary, Canada
| | - Richard Long
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Canada
| | - Catherine Paulsen
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Canada
| | - James Johnston
- British Columbia Centre for Disease Control, Vancouver, Canada
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Kamila Romanowski
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Victoria J. Cook
- British Columbia Centre for Disease Control, Vancouver, Canada
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Greg J. Fox
- Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Thu Anh Nguyen
- Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Chantal Valiquette
- McGill International TB Centre, Montreal Chest Institute and Research Institute of the MUHC, Canada
| | - Olivia Oxlade
- McGill International TB Centre, Montreal Chest Institute and Research Institute of the MUHC, Canada
- School of Population and Global Health, McGill University, Canada
| | - Federica Fregonese
- McGill International TB Centre, Montreal Chest Institute and Research Institute of the MUHC, Canada
| | - Andrea Benedetti
- McGill International TB Centre, Montreal Chest Institute and Research Institute of the MUHC, Canada
- Department of Epidemiology & Biostatistics, McGill University, Canada
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Abera MT, Fetene MB, Kassa NB, Yaynishet YA, Tefera TG, Hailu SS. Intraocular tuberculosis masquerading as ocular tumor: A case report. Radiol Case Rep 2024; 19:1949-1955. [PMID: 38434778 PMCID: PMC10909611 DOI: 10.1016/j.radcr.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/04/2024] [Accepted: 02/06/2024] [Indexed: 03/05/2024] Open
Abstract
Tuberculosis is one of the most common pediatric problems, especially in the developing world. In spite of that, intraocular tuberculosis is a rare disease that can easily be confused with other noninfectious processes, even in regions where tuberculosis is rampant. Diagnosis is difficult, yet it is very important to provide effective antituberculosis treatment and avoid potentially sight-losing interventions. We present a case of a 2-year-old child with a positive contact history of tuberculosis who presented with progressively worsening seizures and constitutional symptoms for 6 months. Brain computed tomography revealed right frontotemporal region conglomerated ring-enhancing lesions with central necrosis consistent with tuberculosis. On the same scan, a calcified right retinal lesion with a contrast-enhancing soft tissue component was identified. A chest radiograph and abdominal sonography showed evidence of disseminated tuberculosis. Subsequently, antituberculosis treatment was initiated, and the right retinal lesion improved, thus leading to the imaging diagnosis of right intraocular tuberculosis. Early and accurate diagnosis of retinal tuberculosis is of paramount importance in avoiding potentially catastrophic interventions. Neuroimaging is a useful, noninvasive method to consider this difficult diagnosis and also for follow-up.
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Affiliation(s)
| | - Misganaw Badege Fetene
- Addis Ababa University, College of Health Sciences, Department of Radiology, Addis Ababa, Ethiopia
| | - Nibretu Bekele Kassa
- Addis Ababa University, College of Health Sciences, Department of Radiology, Addis Ababa, Ethiopia
| | - Yodit Abraham Yaynishet
- Addis Ababa University, College of Health Sciences, Department of Radiology, Addis Ababa, Ethiopia
| | - Tesfaye Gizaw Tefera
- Addis Ababa University, College of Health Sciences, Department of Radiology, Addis Ababa, Ethiopia
| | - Samuel Sisay Hailu
- Addis Ababa University, College of Health Sciences, Department of Radiology, Addis Ababa, Ethiopia
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Raghu MS, Pradeep Kumar CB, Yogesh Kumar K, Prashanth MK, Alharethy F, Jeon BH. Synthesis, biological evaluation and molecular docking study of pyrimidine linked thiazolidinedione derivatives as potential antimicrobial and antitubercular agents. Bioorg Med Chem Lett 2024; 103:129707. [PMID: 38492608 DOI: 10.1016/j.bmcl.2024.129707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/11/2024] [Accepted: 03/14/2024] [Indexed: 03/18/2024]
Abstract
The design and development of novel antimicrobial agents are highly desired to combat the emergence of medication resistance against microorganisms that cause infections. A series of new pyrimidine-linked thiazolidinedione derivatives (5a-j) were synthesized, characterized, and their antimicrobial properties assessed in the current investigation. Here, novel pyrimidine-linked thiazolidinedione compounds were designed using the molecular hybridization approach. Elemental and spectral techniques were used to determine the structures of the synthesized hybrids. The majority of compounds showed encouraging antibacterial properties. Among the active compounds, 5g, 5i, and 5j showed 1.85, 1.15, and 1.38 times the activity of streptomycin against S. aureus, respectively, with MIC values of 6.4, 10.3, and 8.6 µM. With MIC values of 10.8, 21.9, and 15.4 µM, respectively, the compounds 5g, 5i, and 5j showed 2.14, 1.05, and 1.50 times the activity of linezolid against the methicillin-resistant S. aureus (MRSA) strain. Furthermore, when compared to the reference medications, compounds 5g, 5i, and 5j demonstrated broad-range antimicrobial efficacy against all tested strains of bacteria and fungus. Out of all the compounds that were investigated, compounds 5g, 5i, and 5j showed noteworthy anti-tubercular activity. 5g is the most effective, 1.59 times more effective than reference drug isoniazid. To anticipate the binding manner, the synthesized potent compounds were subjected to molecular docking into the active binding site of MRSA and the mycobacterial membrane protein large 3 (MmpL3) protein. The compounds 5g, 5i, and 5j may eventually serve as lead compounds in the search for antimicrobial and anti-TB therapeutic agents.
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Affiliation(s)
- M S Raghu
- Department of Chemistry, New Horizon College of Engineering, Bengaluru 560 103, India
| | - C B Pradeep Kumar
- Department of Chemistry, Malnad College of Engineering, Hassan 573 202, India
| | - K Yogesh Kumar
- Department of Chemistry, Faculty of Engineering and Technology, Jain University, Ramanagara 562 112, India
| | - M K Prashanth
- Department of Chemistry, B N M Institute of Technology, Bengaluru 560 070, India.
| | - Fahd Alharethy
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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Painter H, Willcocks S, Zelmer A, Reljic R, Tanner R, Fletcher H. Demonstrating the utility of the ex vivo murine mycobacterial growth inhibition assay (MGIA) for high-throughput screening of tuberculosis vaccine candidates against multiple Mycobacterium tuberculosis complex strains. Tuberculosis (Edinb) 2024; 146:102494. [PMID: 38367368 DOI: 10.1016/j.tube.2024.102494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/05/2024] [Accepted: 02/11/2024] [Indexed: 02/19/2024]
Abstract
Human tuberculosis (TB) is caused by various members of the Mycobacterium tuberculosis (Mtb) complex. Differences in host response to infection have been reported, illustrative of a need to evaluate efficacy of novel vaccine candidates against multiple strains in preclinical studies. We previously showed that the murine lung and spleen direct mycobacterial growth inhibition assay (MGIA) can be used to assess control of ex vivo mycobacterial growth by host cells. The number of mice required for the assay is significantly lower than in vivo studies, facilitating testing of multiple strains and/or the incorporation of other cellular analyses. Here, we provide proof-of-concept that the murine MGIA can be applied to evaluate vaccine-induced protection against multiple Mtb clinical isolates. Using an ancient and modern strain of the Mtb complex, we demonstrate that ex vivo bacillus Calmette-Guérin (BCG)-mediated mycobacterial growth inhibition recapitulates protection observed in the lung and spleen following in vivo infection of mice. Further, we provide the first report of cellular and transcriptional correlates of BCG-induced growth inhibition in the lung MGIA. The ex vivo MGIA represents a promising platform to gain early insight into vaccine performance against a collection of Mtb strains and improve preclinical evaluation of TB vaccine candidates.
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Affiliation(s)
- Hannah Painter
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
| | - Sam Willcocks
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Andrea Zelmer
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Rajko Reljic
- Institute of Infection and Immunity, St George's University of London, Cranmer Terrrace, London, SW17 0RE, UK
| | - Rachel Tanner
- Department of Biology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford, OX3 7DQ, UK
| | - Helen Fletcher
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
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Nyazema KB, Shey BA, Sei CJ, Peters RP, Maningi NE, Fischer GW, Bernard Fourie P. In vitro evaluation of the binding activity of novel mouse IgG1 opsonic monoclonal antibodies to Mycobacterium tuberculosis and other selected mycobacterial species. J Clin Tuberc Other Mycobact Dis 2024; 35:100435. [PMID: 38601919 PMCID: PMC11004620 DOI: 10.1016/j.jctube.2024.100435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024] Open
Abstract
Antimicrobial resistance alongside other challenges in tuberculosis (TB) therapeutics have stirred renewed interest in host-directed interventions, including the role of antibodies as adjunct therapeutic agents. This study assessed the binding efficacy of two novel IgG1 opsonic monoclonal antibodies (MABs; GG9 & JG7) at 5, 10, and 25 µg/mL to live cultures of Mycobacterium tuberculosis, M. avium, M. bovis, M. fortuitum, M. intracellulare, and M. smegmatis American Type Culture Collection laboratory reference strains, as well as clinical susceptible, multi-drug resistant, and extensively drug resistant M. tuberculosis strains using indirect enzyme-linked immunosorbent assays. These three MAB concentrations were selected from a range of concentrations used in previous optimization (binding and functional) assays. Both MABs bound to all mycobacterial species and sub-types tested, albeit to varying degrees. Statistically significant differences in MAB binding activity were observed when comparing the highest and lowest MAB concentrations (p < 0.05) for both MABs GG9 and JG7, irrespective of the M. tuberculosis resistance profile. Binding affinity increased with an increase in MAB concentration, and optimal binding was observed at 25 µg/mL. JG7 showed better binding activity than GG9. Both MABs also bound to five MOTT species, albeit at varied levels. This non-selective binding to different mycobacterial species suggests a potential role for GG9 and JG7 as adjunctive agents in anti-TB chemotherapy with the aim to enhance bacterial killing.
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Affiliation(s)
- Kudzai B. Nyazema
- Department of Medical Microbiology, Faculty of Health Sciences, University of Pretoria, South Africa
| | - Bong-Akee Shey
- Department of Medical Microbiology, Faculty of Health Sciences, University of Pretoria, South Africa
| | - Clara J. Sei
- Vaccine and Antibody Development, Longhorn Vaccines and Diagnostics, Gaithersburg, MD, USA
| | - Remco P.H. Peters
- Department of Medical Microbiology, Faculty of Health Sciences, University of Pretoria, South Africa
- Foundation for Professional Development, Research Unit, East London, South Africa
| | - Nontuthuko E. Maningi
- Department of Medical Microbiology, Faculty of Health Sciences, University of Pretoria, South Africa
- Department of Microbiology, School of Life Sciences, University of KwaZulu-Natal, South Africa
| | - Gerald W. Fischer
- Vaccine and Antibody Development, Longhorn Vaccines and Diagnostics, Gaithersburg, MD, USA
| | - P. Bernard Fourie
- Department of Medical Microbiology, Faculty of Health Sciences, University of Pretoria, South Africa
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Liu X, Li H, Wang Y, Li S, Ren W, Yuan J, Pang Y. Discovering common pathogenetic processes between tuberculosis and COVID-19 by bioinformatics and system biology approach. Heliyon 2024; 10:e28664. [PMID: 38596062 PMCID: PMC11002586 DOI: 10.1016/j.heliyon.2024.e28664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/11/2024] Open
Abstract
Background SARS-CoV-2, the cause of the COVID-19 pandemic, poses a significant threat to humanity. Individuals with pulmonary tuberculosis (PTB) are at increased risk of developing severe COVID-19, due to long-term lung damage that heightens their susceptibility to full-blown disease. Methods Three COVID-19 datasets (GSE157103, GSE166253, and GSE171110) and one PTB dataset (GSE83456) were obtained from the Gene Expression Omnibus databases. Subsequently, data were subjected to weighted gene co-expression network analysis(WGCNA)followed by functional enrichment analysis using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway databases. These analyses revealed two overlapping disease-specific modules, each comprising co-regulated genes with potentially related biological functions. Using Cytoscape, we visualised the interaction network containing common disease-related genes found within the intersection between modules and predicted transcription factors (TFs). Real-time qPCR was conducted to quantify expression levels of these genes in blood samples from COVID-19 and PTB patients. Finally, DisGeNET and the Drug Signatures database were employed to analyze these common genes, unveiling their connections to clinical disease features and potential drug treatments. Results Examination of the overlap between COVID-19 and PTB gene modules unveiled 11 common genes. Functional enrichment analyses using KEGG and GO shed light on potential functional relationships among these genes, providing insights into their potential roles in the heightened mortality of PTB patients due to SARS-CoV-2 infection. Furthermore, results of various bioinformatics-based analyses of common TFs and target genes led to identification of shared pathways and therapeutic targets for PTB patients with COVID-19, along with potential drug treatments for these patients. Conclusion Our results unveiled a potential biological connection between COVID-19 and PTB, as supported by results of functional enrichment analysis that highlighted potential biological processes and signaling pathways shared by both diseases. Building on these findings, we propose potential drug treatments for PTB patients with COVID-19, pending verification of drug safety and efficacy through laboratory and multicentre studies before clinical use.
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Affiliation(s)
| | | | | | - Shanshan Li
- Department of Bacteriology and Immunology, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing, China
| | - Weicong Ren
- Department of Bacteriology and Immunology, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing, China
| | - Jinfeng Yuan
- Department of Bacteriology and Immunology, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing, China
| | - Yu Pang
- Department of Bacteriology and Immunology, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing, China
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Xiao X, Cao Q, Shi Y. Thyroid tuberculosis and cold abscess after infection with COVID-19: A case report. Heliyon 2024; 10:e28469. [PMID: 38560267 PMCID: PMC10979213 DOI: 10.1016/j.heliyon.2024.e28469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024] Open
Abstract
There is mounting evidence that coronavirus disease 2019 (COVID-19) can cause immune dysregulation. The consequence of this immune dysregulation may contribute to susceptibility to tuberculosis (TB). Thyroid gland involvement by TB is extremely uncommon and typically the result of disseminated infection. It can be hard to diagnose because there are no identifiable symptoms. We present the case of a Chinese patient who had a fever again after COVID-19 infection that was finally diagnosed as thyroid tuberculosis with a cold abscess. Clinicians should maintain a high index of suspicion for high-risk patients from endemic regions with medical comorbidities, such as immunocompromised disease and malnutrition.
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Affiliation(s)
| | | | - Yujia Shi
- Department of Respiratory and Critical Care Medicine, The Affiliated Changzhou No.2 People's Hospital of Nanjing Medical University, Changzhou, 213003, China
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Gunasekaran H, Sampath P, Thiruvengadam K, Malaisamy M, Ramasamy R, Ranganathan UD, Bethunaickan R. A systematic review and meta-analysis of circulating serum and plasma microRNAs in TB diagnosis. BMC Infect Dis 2024; 24:402. [PMID: 38622570 DOI: 10.1186/s12879-024-09232-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 03/18/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Tuberculosis (TB) ranks as the second leading cause of death globally among all infectious diseases. This problem is likely due to the lack of biomarkers to differentiate the heterogeneous spectrum of infection. Therefore, the first step in solving this problem is to identify biomarkers to distinguish the different disease states of an individual and treat them accordingly. Circulating microRNA (miRNA) biomarkers are promising candidates for various diseases. In fact, we are yet to conceptualize how miRNA expression influences and predicts TB disease outcomes. Thus, this systematic review and meta-analysis aimed to assess the diagnostic efficacy of circulating miRNAs in Latent TB (LTB) and Active Pulmonary TB (PTB). METHODS Literature published between 2012 and 2021 was retrieved from PubMed, Web of Science, Cochrane, Scopus, Embase, and Google Scholar. Articles were screened based on inclusion and exclusion criteria, and their quality was assessed using the QUADAS-2 tool. Funnel plots and forest plots were generated to assess the likelihood of study bias and heterogeneity, respectively. RESULTS After the screening process, seven articles were selected for qualitative analysis. The study groups, which consisted of Healthy Control (HC) vs. TB and LTB vs. TB, exhibited an overall sensitivity of 81.9% (95% CI: 74.2, 87.7) and specificity of 68.3% (95% CI: 57.8, 77.2), respectively. However, our meta-analysis results highlighted two potentially valuable miRNA candidates, miR-197 and miR-144, for discriminating TB from HC. The miRNA signature model (miR197-3p, miR-let-7e-5p, and miR-223-3p) has also been shown to diagnose DR-TB with a sensitivity of 100%, but with a compromised specificity of only 75%. CONCLUSION miRNA biomarkers show a promising future for TB diagnostics. Further multicentre studies without biases are required to identify clinically valid biomarkers for different states of the TB disease spectrum. SYSTEMATIC REVIEW REGISTRATION PROSPERO (CRD42022302729).
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Affiliation(s)
- Harinisri Gunasekaran
- Department of Immunology, ICMR-National Institute for Research in Tuberculosis, No.1. Mayor Sathyamoorthy Road, 600 031, Chetpet, Chennai, India
- University of Madras, Chennai, India
| | - Pavithra Sampath
- Department of Immunology, ICMR-National Institute for Research in Tuberculosis, No.1. Mayor Sathyamoorthy Road, 600 031, Chetpet, Chennai, India
- University of Madras, Chennai, India
| | - Kannan Thiruvengadam
- Department of Epidemiology Statistics, ICMR-National Institute for Research in Tuberculosis, Chennai, India
| | - Muniyandi Malaisamy
- Department of Health Economics, ICMR-National Institute for Research in Tuberculosis, Chennai, India
| | - Rathinasabapati Ramasamy
- Library and Information Center, ICMR-National Institute for Research in Tuberculosis, Chennai, India
| | - Uma Devi Ranganathan
- Department of Immunology, ICMR-National Institute for Research in Tuberculosis, No.1. Mayor Sathyamoorthy Road, 600 031, Chetpet, Chennai, India
| | - Ramalingam Bethunaickan
- Department of Immunology, ICMR-National Institute for Research in Tuberculosis, No.1. Mayor Sathyamoorthy Road, 600 031, Chetpet, Chennai, India.
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Eiamchai P, Juntagran C, Somboonsaksri P, Waiwijit U, Eisiri J, Samarnjit J, Kaewseekhao B, Limwichean S, Horprathum M, Reechaipichitkul W, Nuntawong N, Faksri K. Determination of latent tuberculosis infection from plasma samples via label-free SERS sensors and machine learning. Biosens Bioelectron 2024; 250:116063. [PMID: 38290379 DOI: 10.1016/j.bios.2024.116063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/02/2024] [Accepted: 01/22/2024] [Indexed: 02/01/2024]
Abstract
Effective diagnostic tools for screening of latent tuberculosis infection (LTBI) are lacking. We aim to investigate the performance of LTBI diagnostic approaches using label-free surface-enhanced Raman spectroscopy (SERS). We used 1000 plasma samples from Northeast Thailand. Fifty percent of the samples had tested positive in the interferon-gamma release assay (IGRA) and 50 % negative. The SERS investigations were performed on individually prepared protein specimens using the Raman-mapping technique over a 7 × 7 grid area under measurement conditions that took under 10 min to complete. The machine-learning analysis approaches were optimized for the best diagnostic performance. We found that the SERS sensors provide 81 % accuracy according to train-test split analysis and 75 % for LOOCV analysis from all samples, regardless of the batch-to-batch variation of the sample sets and SERS chip. The accuracy increased to 93 % when the logistic regression model was used to analyze the last three batches of samples, following optimization of the sample collection, SERS chips, and database. We demonstrated that SERS analysis with machine learning is a potential diagnostic tool for LTBI screening.
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Affiliation(s)
- Pitak Eiamchai
- National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand.
| | - Chadatan Juntagran
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Research and Diagnostic Center for Emerging Infectious Diseases (RCEID), Khon Kaen University, Khon Kaen, Thailand.
| | - Pacharamon Somboonsaksri
- National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Uraiwan Waiwijit
- National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Jukgarin Eisiri
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Research and Diagnostic Center for Emerging Infectious Diseases (RCEID), Khon Kaen University, Khon Kaen, Thailand
| | - Janejira Samarnjit
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Research and Diagnostic Center for Emerging Infectious Diseases (RCEID), Khon Kaen University, Khon Kaen, Thailand
| | - Benjawan Kaewseekhao
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Research and Diagnostic Center for Emerging Infectious Diseases (RCEID), Khon Kaen University, Khon Kaen, Thailand
| | - Saksorn Limwichean
- National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Mati Horprathum
- National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Wipa Reechaipichitkul
- Research and Diagnostic Center for Emerging Infectious Diseases (RCEID), Khon Kaen University, Khon Kaen, Thailand; Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Noppadon Nuntawong
- National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand.
| | - Kiatichai Faksri
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Research and Diagnostic Center for Emerging Infectious Diseases (RCEID), Khon Kaen University, Khon Kaen, Thailand.
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Fetensa G, Wirtu D, Etana B, Wakuma B, Tolossa T, Gugsa J, Gobena D, Fekadu G, Ragasa MT, Ejeta E. Tuberculosis treatment delay and contributing factors within tuberculosis patients in Ethiopia: A systematic review and meta-analysis. Heliyon 2024; 10:e28699. [PMID: 38586418 PMCID: PMC10998239 DOI: 10.1016/j.heliyon.2024.e28699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/19/2024] [Accepted: 03/22/2024] [Indexed: 04/09/2024] Open
Abstract
Background Tuberculosis (TB) is a significant public health disease and a major contributor to illness and death worldwide, including in Ethiopia. There are many information from first source which had inconclusive result in Ethiopia. Therefore, this review aimed to produce pooled evidence on the TB treatment delay and factors associated with it. Methods The absence of a similar study with a systematic review and meta-analysis was confirmed. Articles from online available and unpublished sources conducted within Ethiopia between 2002 and 2024, were thoroughly screened using electronic sources such as Medline, Embase, Hinari, PubMed, the Cochrane Library, the Web of Science, and Google Scholar. Data analysis was performed using STATA version 14. Heterogeneity was assessed using Inverse of Variance (I2) and Cochrane Q tests. The funnel plot was employed to rule existence of publications subjectively while bias was checked using Egger's statistical method to quantify the bias. Result Prevalence of TB treatment delay in Ethiopia was 50.42% at 95% (43.21, 57.64). Factors such as knowledge about TB, distance to health facilities less than 10 km, initial contact at a government service providing center for TB, having some educations, having pulmonary Tuberculosis, urban residency, were prtotective towards treatment delay. Female in gender, no chest pain symptom, disease severity with no restriction on daily activity, alcohol drinkers, and unmarried respondents were at higher risk to miss on time tuberculosis treatment. Conclusion and recommendation The tuberculosis treatment delay in Ethiopia was considerably unexpected and basic personal variables and facility related variables were statistically associated with treatment. Therefore, Ethiopian TB control programs have to recognize and tackle the problem, obstacles, and vulnerability across the continuum patient care taking down and connecting to treatment post-diagnosis. This can be achieved by capacitating both government and non-governmental service provision centers and minimizing unfilled difference across professional awareness and skill, which will contribute further to minimizing delay.
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Affiliation(s)
- Getahun Fetensa
- Department of Nursing, School of Nursing and Midwifery, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
- Department of Health, Behavior, and Society, Faculty of Public Health, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Dessalegn Wirtu
- Department of Public Health, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Belachew Etana
- Department of Public Health, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Bizuneh Wakuma
- Department of Nursing, School of Nursing and Midwifery, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Tadesse Tolossa
- Department of Public Health, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
- Deakin Health Economics, School of Health and Social Development, Institute for Health Transformation, Deakin University, Geelong, VIC, Australia
| | - Jilcha Gugsa
- Oromia Physician Association, Addis Ababa, Ethiopia
- Batu General Hospital, Oromia Regional Health Bureau, Addis Ababa, Ethiopia
| | - Dabesa Gobena
- Public Health Emergency Management and Health Research Directorate, Oromia Health Bureau, Addis Ababa, Ethiopia
- School of Medical Laboratory Science, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Ginenus Fekadu
- Department of Pharmacy, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Misganu Teshoma Ragasa
- Department of Midwifery, School of Nursing and Midwifery, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Eshetu Ejeta
- Department of Pharmacy, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
- Department of Public Health, Ambo University, Ambo, Ethiopia
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Hu X, Chen C, Gao Q, Zhou L, Shao Y, Li G, Song H, Liu Q, Han L, Zhu L. Latent tuberculosis infection and infection-associated risk factors for miner workers with silicosis in eastern China. BMC Pulm Med 2024; 24:177. [PMID: 38622607 DOI: 10.1186/s12890-024-02985-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/28/2024] [Indexed: 04/17/2024] Open
Abstract
OBJECTIVES Silicosis people are at high risk of developing pulmonary tuberculosis. Whether silica exposure increases the likelihood of latent tuberculosis infection (LTBI) was not well understood, and potential factors involved in LTBI risk among silicosis people were not evaluated before. Thus, LTBI among silicosis people and potential risk factors for LTBI among silicosis people were evaluated in this study. METHODS A cross-sectional study was undertaken for 130 miner workers with silicosis. The QFT-GIT was performed for LTBI detection. RESULTS The LTBI was high to 31.6% (36/114) for silicosis participants, and 13.1% (13/99) had a history of tuberculosis. Drinking was associated with LTBI risk (OR = 6.92, 95%CI, 1.47-32.66, P = 0.015). Meanwhile, tunneling work was associated with an increased risk of LTBI compared with other mining occupations (OR = 3.91,95%CI,1.20-12.70, P = 0.024). CONCLUSIONS The LTBI rate of silicosis participants was high and more than 10% had a history of tuberculosis. Drinking alcohol and tunneling were independent risk factors for LTBI in silicosis participants.
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Affiliation(s)
- Xinsong Hu
- School of Public Health, Nanjing Medical University, Nanjing, China
| | - Cheng Chen
- Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China
| | - Qianqian Gao
- Department of Occupational Disease Prevention, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China
| | - Lang Zhou
- Department of Occupational Disease Prevention, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China
| | - Yan Shao
- Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China
| | - Guoli Li
- Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China
| | - Honghuan Song
- Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China
| | - Qiao Liu
- Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China
| | - Lei Han
- Department of Occupational Disease Prevention, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China.
| | - Limei Zhu
- School of Public Health, Nanjing Medical University, Nanjing, China.
- Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China.
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M K, Mohan Menon P, C GPD, Natarajan C. Interaction of eugenol-based anti- tuberculosis nanoemulsion with bovine serum albumin: A spectroscopic study including Rifampicin, Isoniazid, Pyrazinamide, and Ethambutol. Heliyon 2024; 10:e28306. [PMID: 38571616 PMCID: PMC10987999 DOI: 10.1016/j.heliyon.2024.e28306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 03/15/2024] [Accepted: 03/15/2024] [Indexed: 04/05/2024] Open
Abstract
Tuberculosis (TB), a deadly infectious disease, is primarily caused by the bacterium Mycobacterium tuberculosis. The misuse of antibiotics has led to the development of drug resistance, prompting researchers to explore new technologies to combat multidrug-resistant Tuberculosis (MDR TB). Phospholipid-based nanotherapeutics, such as nanoemulsions, are gaining traction as they enhance drug solubility, stability, and bioavailability. Our study focuses on the interaction between Bovine Serum Albumin (BSA) and a drug-loaded nanoemulsion based on Eugenol. This nanoemulsion incorporates Eugenol, Clove, cinnamon oil, and first-line anti-tuberculosis drugs like Rifampicin, Isoniazid, Pyrazinamide, and Ethambutol. The primary objective is to assess the biosafety profile of the nanoemulsion upon interaction with BSA. We employed Fluorescence, UV-visible, and Fourier Transform Infrared Spectroscopy (FTIR) to analyze this interaction. UV-visible spectroscopy detected changes in hydrophobicity due to structural alterations in BSA near the tryptophan residue, leading to the formation of ground-state complexes. Fluorescence spectroscopy demonstrated that the nanoemulsion effectively quenched fluorescence originating from tryptophan and tyrosine residues. Studies using synchronous and three-dimensional spectroscopy point to a potential modification of the aromatic environment of BSA by the nanoemulsion. Resonance light scattering spectra indicated the formation of large aggregates due to the interaction with the nanoemulsion. The second derivative FTIR spectra showed an increase in the magnitude of secondary structure bands, suggesting a conformational shift. This research has significant pharmacological implications for developing safer, more targeted drug delivery systems. The information obtained from the interaction of the nanoemulsion with the blood carrier protein is vital for the future development of superior carriers with minimal adverse effects on patients. It is crucial to remember that conformational changes brought on by drug-ligand complexes attaching to carrier proteins may have negative consequences. Therefore, this study enhances the in vitro evaluation of potential adverse effects of the nanoemulsion on serum proteins.
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Affiliation(s)
- Keerthana M
- Centre for Nanobiotechnology, VIT University, Vellore-632014, Tamil Nadu, India
| | - Parvathy Mohan Menon
- Department of Integrative Biology, School of Bio Sciences and Technology, VIT University, Vellore-632014, Tamil Nadu, India
| | - George Priya Doss C
- Department of Integrative Biology, School of Bio Sciences and Technology, VIT University, Vellore-632014, Tamil Nadu, India
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Zhang H, Li L, Liu Y, Xiao W, Xu R, Lu M, Hao W, Gao Y, Tang X, Dai Y. Serum cytokine biosignatures for identification of tuberculosis among HIV-positive inpatients. Thorax 2024; 79:465-471. [PMID: 38490721 DOI: 10.1136/thorax-2023-220782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 02/06/2024] [Indexed: 03/17/2024]
Abstract
BACKGROUND Serum cytokines correlate with tuberculosis (TB) progression and are predictors of TB recurrence in people living with HIV. We investigated whether serum cytokine biosignatures could diagnose TB among HIV-positive inpatients. METHODS We recruited HIV-positive inpatients with symptoms of TB and measured serum levels of inflammation biomarkers including IL-2, IL-4, IL-6, IL-10, tumour necrosis factor-alpha (TNF-α) and interferon-gamma (IFN-γ). We then built and tested our TB prediction model. RESULTS 236 HIV-positive inpatients were enrolled in the first cohort and all the inflammation biomarkers were significantly higher in participants with microbiologically confirmed TB than those without TB. A binary support vector machine (SVM) model was built, incorporating the data of four biomarkers (IL-6, IL-10, TNF-α and IFN-γ). Efficacy of the SVM model was assessed in training (n=189) and validation (n=47) sets with area under the curve (AUC) of 0.92 (95% CI 0.88 to 0.96) and 0.85 (95% CI 0.72 to 0.97), respectively. In an independent test set (n=110), the SVM model yielded an AUC of 0.85 (95% CI 0.76 to 0.94) with 78% (95% CI 68% to 87%) specificity and 85% (95% CI 66% to 96%) sensitivity. Moreover, the SVM model outperformed interferon-gamma release assay (IGRA) among advanced HIV-positive inpatients irrespective of CD4+ T-cell counts, which may be an alternative approach for identifying Mycobacterium tuberculosis infection among HIV-positive inpatients with negative IGRA. CONCLUSIONS The four-cytokine biosignature model successfully identified TB among HIV-positive inpatients. This diagnostic model may be an alternative approach to diagnose TB in advanced HIV-positive inpatients with low CD4+ T-cell counts.
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Affiliation(s)
- Huihua Zhang
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - LingHua Li
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - YanXia Liu
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Wei Xiao
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, China
| | - RuiYao Xu
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, School of Medicine, Shenzhen University, Shenzhen, Guangdong, China
| | - MengRu Lu
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - WenBiao Hao
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - YuChi Gao
- Clinical Laboratory, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong, China
| | - Xiaoping Tang
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Youchao Dai
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
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Liu C, Li X. Identification of hub genes and establishment of a diagnostic model in tuberculosis infection. AMB Express 2024; 14:36. [PMID: 38615114 PMCID: PMC11016026 DOI: 10.1186/s13568-024-01691-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 03/17/2024] [Indexed: 04/15/2024] Open
Abstract
Tuberculosis (TB) poses significant challenges due to its high transmissibility within populations and intrinsic resistance to treatment, rendering it a formidable respiratory disease with a substantial susceptibility burden. This study was designed to identify new potential therapeutic targets for TB and establish a diagnostic model. mRNA expression data for TB were from GEO database, followed by conducting differential expression analysis. The top 50 genes with differential expression were subjected to GO and KEGG enrichment analyses. To establish a PPI network, the STRING database was utilized, and hub genes were identified utilizing five algorithms (EPC, MCC, MNC, Radiality, and Stress) within the cytoHubba plugin of Cytoscape software. Furthermore, a hub gene co-expression network was constructed using the GeneMANIA database. Consistency clustering was performed on hub genes, and ssGSEA was utilized to analyze the extent of immune infiltration in different subgroups. LASSO analysis was employed to construct a diagnostic model, and ROC curves were used for validation. Through the analysis of GEO data, a total of 159 genes were identified as differentially expressed. Further, GO and KEGG enrichment analyses revealed that these genes were mainly enriched in viral defense, symbiotic defense, and innate immune response-related pathways. Hub genes, including DDX58, IFIT2, IFIH1, RSAD2, IFI44L, OAS2, OAS1, OASL, IFIT1, IFIT3, MX1, STAT1, and ISG15, were identified using cytoHubba analysis of the PPI network. The GeneMANIA analysis unmasked that the co-expression rate of hub genes was 81.55%, and the physical interaction rate was 12.27%. Consistency clustering divided TB patients into two subgroups, and ssGSEA revealed different degrees of immune infiltration in different subgroups. LASSO analysis identified IFIT1, IFIT2, IFIT3, IFIH1, RSAD2, OAS1, OAS2, and STAT1 as eight immune-related key genes, and a diagnostic model was constructed. The ROC curve demonstrated that the model exhibited excellent diagnostic performance. DDX58, IFIT2, IFIH1, RSAD2, IFI44L, OAS2, OAS1, OASL, IFIT1, IFIT3, MX1, STAT1, and ISG15 were hub genes in TB, and the diagnostic model based on eight immune-related key genes exhibited good diagnostic performance.
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Affiliation(s)
- Chunli Liu
- Department of Respiratory, Chongqing Dazu Traditional Chinese Medicine Hospital, No.218, 1st Ring North Road, Dazu District, Chongqing, 402360, China.
| | - Xing Li
- Department of Respiratory, Chongqing Dazu Traditional Chinese Medicine Hospital, No.218, 1st Ring North Road, Dazu District, Chongqing, 402360, China
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Song YK, Lee J, Jo J, Kwon JW. Comparison of active tuberculosis occurrence associated with Janus kinase inhibitors and biological DMARDs in rheumatoid arthritis. RMD Open 2024; 10:e003946. [PMID: 38609319 DOI: 10.1136/rmdopen-2023-003946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 03/12/2024] [Indexed: 04/14/2024] Open
Abstract
OBJECTIVES This study aimed to evaluate the risk of tuberculosis associated with the use of Janus kinase (JAK) inhibitors or biological disease-modifying antirheumatic drugs (bDMARDs) in patients diagnosed with rheumatoid arthritis (RA) in South Korea. METHODS In this nationwide matched-cohort study, we retrospectively identified adult patients with new-onset RA from the National Health Insurance Service database who were prescribed bDMARDs or JAK inhibitors and recently underwent latent tuberculosis infection (LTBI) screening during 2012‒2021, and followed them up until the end of 2022 for the development of active tuberculosis. HRs were estimated using Cox proportional hazards regression in a propensity score-matched cohort. RESULTS Among 16 760 matched patients with RA (3352 JAK inhibitor users and 13 408 bDMARD users), 18.8% received tuberculosis preventive therapy for LTBI. Overall, JAK inhibitor users had a significantly lower risk of tuberculosis than bDMARD users (HR (95% CI)=0.37 (0.22 to 0.62)). Among the patients treated for LTBI, patients with low treatment adherence had a significantly higher risk than those without LTBI (HR (95% CI)=2.78 (1.74 to 4.44)). Patients without LTBI and using JAK inhibitors had a significantly lower risk of tuberculosis across all ages and sexes compared with bDMARD users. CONCLUSION Patients with RA using JAK inhibitors have a significantly lower risk of active tuberculosis than bDMARD users in South Korea; however, patients with RA having LTBI are equally at risk regardless of the treatment received (JAK inhibitor vs bDMARD). Therefore, vigilant tuberculosis monitoring, especially in patients with low adherence to tuberculosis preventive therapy, is essential.
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Affiliation(s)
- Yun-Kyoung Song
- College of Pharmacy, The Catholic University of Korea-Songsin Campus, Bucheon, Gyeonggido, Korea (the Republic of)
| | - Jaehee Lee
- Kyungpook National University School of Medicine, Daegu, Korea (the Republic of)
| | - Junwoo Jo
- Department of Statistics, Kyungpook National University, Daegu, Korea (the Republic of)
| | - Jin-Won Kwon
- BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Korea (the Republic of)
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Xu Y, Zhang Q, Chen Z, Yang S, Chen H, Xiao X, Jiang H. Impact of immune checkpoint inhibitors (ICIs) therapy on interferon-γ release assay (IGRA) and diagnostic value in non-small cell lung cancer (NSCLC) patients. BMC Pulm Med 2024; 24:174. [PMID: 38609918 PMCID: PMC11010406 DOI: 10.1186/s12890-024-02980-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND Tuberculosis (TB), a highly contagious respiratory disease, presents a significant global health threat, with a notable increase in incidence reported by the WHO in 2022. Particularly, the interplay between TB and non-small cell lung cancer (NSCLC) gains attention, especially considering the rising use of immune checkpoint inhibitors (ICIs) in cancer treatment. This interplay may influence TB diagnostics and reactivation, warranting a closer examination. METHODS A retrospective analysis was conducted on clinical data of NSCLC patients with positive T-SPOT results before undergoing anti-tumor treatment at Zhongshan Hospital (Xiamen), Fudan University, from January 1, 2021 to December 31, 2022. We assessed the incidence of tuberculosis reactivation and treatment outcomes among these patients. Moreover, we compared the differences in tuberculosis activity between the ICIs and non-ICIs treatment groups. Additionally, we observed the changes in T-SPOT spot count before and after immunotherapy, analyzing their association with tuberculosis activity and prognosis. RESULTS A total of 40 NSCLC patients with positive T-SPOT results before treatment were included in the study, with 26 patients in the ICIs treatment group and 14 patients in the non-ICIs treatment group. The study found no significant differences between the two groups in terms of gender, age, stage, histological type, performance status, driver gene expression, and distant metastasis. With a median follow-up time of 10.0 (6.0-14.5) months, three cases (11.5%) in the ICIs treatment group developed tuberculosis activity, diagnosed at 2, 3, and 12 months after ICIs treatment initiation. Conversely, no tuberculosis activity was observed in the non-ICIs treatment group, and the difference between the two groups was not significant (P = 0.186). Among the 32 patients who received ICIs treatment, spot count dynamics were diverse: four cases (12.5%) showed an increase, 12 cases (37.5%) had no change, and 16 cases (50.0%) had a decrease. During the follow-up, the progression rate (PD) was 50.0%, 75.0%, and 62.5% in the three groups, respectively (P = 0.527). Similarly, the mortality rate was 0%, 25.0%, and 25.0%, respectively (P = 0.106). Interestingly, among the patients with decreased spot counts, three cases (18.75%) were diagnosed with active pulmonary tuberculosis. CONCLUSIONS For NSCLC patients with a positive T-SPOT response undergoing ICIs treatment, our study observed indications of active tuberculosis. The varied T-SPOT spot count changes post-ICIs treatment suggest a complex interaction, potentially linking T-SPOT spot count reduction to tuberculosis reactivation risk. These preliminary findings underscore the importance of further research to more accurately assess T-SPOT's diagnostic utility in this context.
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Affiliation(s)
- Yijiao Xu
- Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
- Xiamen Clinical Research Center for Cancer Therapy, Xiamen, China
| | - Qingwei Zhang
- Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
- Xiamen Clinical Research Center for Cancer Therapy, Xiamen, China
| | - Zhisheng Chen
- Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
- Xiamen Clinical Research Center for Cancer Therapy, Xiamen, China
| | - Shuwen Yang
- Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
- Xiamen Clinical Research Center for Cancer Therapy, Xiamen, China
| | - Haiyan Chen
- Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
- Xiamen Clinical Research Center for Cancer Therapy, Xiamen, China
| | - Xiong Xiao
- Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China.
- Xiamen Clinical Research Center for Cancer Therapy, Xiamen, China.
| | - Hongni Jiang
- Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China.
- Xiamen Clinical Research Center for Cancer Therapy, Xiamen, China.
- Zhongshan Hospital, Fudan University, Shanghai, China.
- Fudan Zhangjiang Institute, Shanghai, China.
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Park M, Satta G, Haldar P. Heteroresistance in tuberculosis: are we missing drug-resistant bacteria hiding in plain sight? Thorax 2024:thorax-2024-221409. [PMID: 38604663 DOI: 10.1136/thorax-2024-221409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2024] [Indexed: 04/13/2024]
Affiliation(s)
- Mirae Park
- Respiratory Medicine, Imperial College Healthcare NHS Trust, London, UK
| | - Giovanni Satta
- University College London Centre for Clinical Microbiology, London, UK
| | - Pranabashis Haldar
- Department of Respiratory Sciences, NIHR Respiratory BRC, Glenfield Hospital, University of Leicester, Leicester, UK
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Gebrehiwot KG, Gebregergis GB, Gebregziabher MG, Gebrecherkos T, Tesfamariam WB, Gebretnsae H, Berihu G, Weldemhret L, Gebremedhn G, Wellay T, Bekuretsion H, Gebremedhin A, Gebrehiwet TG, Berhe G. War related disruption of clinical tuberculosis services in Tigray, Ethiopia during the recent regional conflict: a mixed sequential method study. Confl Health 2024; 18:29. [PMID: 38594702 PMCID: PMC11005271 DOI: 10.1186/s13031-024-00583-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 03/14/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND More than 70% of the health facilities in Tigray, northern Ethiopia, have been totally or partially destroyed by the recent war in the region. Diagnosis and management of tuberculosis were among many health services that suffered. In this study we assess the status of tuberculosis care in health facilities of Tigray during the recent war and compare it with the immediate pre-war state. METHODS Using sequential mixed method, we analyzed and compared the availability of diagnostic services in 69 health facilities and the utilization of tuberculosis care in 50 of them immediately before the war (September-October 2020) and during the war (November-July 2021). TB focal persons in each selected health facility were interviewed to evaluate the status of diagnostic services. Patient service utilization was assessed using health facility registrations. We also compared the average monthly case detection rate of multidrug resistant tuberculosis in the region before and during the war. We computed summary statistics and performed comparisons using t-tests. Finally, existing challenges related to tuberculosis care in the region were explored via in-depth interviews. Two investigators openly coded and analyzed the qualitative data independently via thematic analysis. RESULTS Among the 69 health facilities randomly selected, the registers of 19 facilities were destroyed by the war; data from the remaining 50 facilities were included in the TB service utilization analysis. In the first month of the war (November 2021) the number of tuberculosis patients visiting health facilities fell 34%. Subsequently the visitation rate improved steadily, but not to pre-war rates. This reduction was significant in northwest, central and eastern zones. Tuberculosis care in rural areas was hit hardest. Prior to the war 60% of tuberculosis patients were served in rural clinics; this number dropped to an average of 17% during the war. Health facilities were systematically looted. Of the 69 institutions assessed, over 69% of the microscopes in health centers, 87.5% of the microscopes in primary hospitals, and 68% of the microscopes in general hospitals were stolen or damaged. Two GeneXpert nucleic acid amplification machines were also taken from general hospitals. Regarding drug resistant TB, the average number of multidrug resistant tuberculosis (MDR TB) cases detected per month was reduced by 41% during the war with p-value < 0.001. In-depth interviews with eight health care workers indicated that the main factors affecting tuberculosis care in the area were lack of security, health facility destruction, theft of essential equipment, and drug supply disruption. CONCLUSION AND RECOMMENDATION Many tuberculosis patients failed to visit health facilities during the war. There was substantial physical damage to health care facilities and systematic looting of diagnostic equipment. Restoring basic public services and revitalizing clinical care for tuberculosis need urgent consideration.
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Affiliation(s)
| | | | | | - Teklay Gebrecherkos
- School of Medicine, College of Health Science, Mekelle University, PO Box: 1871, Mekelle, Ethiopia
| | - Wegen Beyene Tesfamariam
- School of Medicine, College of Health Science, Mekelle University, PO Box: 1871, Mekelle, Ethiopia
| | | | - Gebregziabher Berihu
- School of Public Health, College of Health Science, Mekelle University, Mekelle, Ethiopia
| | | | | | - Tsegay Wellay
- School of Public Health, College of Health Science, Mekelle University, Mekelle, Ethiopia
| | | | | | | | - Gebretsadik Berhe
- School of Public Health, College of Health Science, Mekelle University, Mekelle, Ethiopia
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Fan C, Eedara BB, Sinha S, Uddin MKM, Doyle C, Banu S, Das SC. Triple combination dry powder formulation of pretomanid, moxifloxacin, and pyrazinamide for treatment of multidrug-resistant tuberculosis. Int J Pharm 2024; 654:123984. [PMID: 38461874 DOI: 10.1016/j.ijpharm.2024.123984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/12/2024]
Abstract
Both latent and multidrug-resistant tuberculosis (TB) have been causing significant concern worldwide. A novel drug, pretomanid (PA-824), has shown a potent bactericidal effect against both active and latent forms of Mycobacterium tuberculosis (MTb) and a synergistic effect when combined with pyrazinamide and moxifloxacin. This study aimed to develop triple combination spray dried inhalable formulations composed of antitubercular drugs, pretomanid, moxifloxacin, and pyrazinamide (1:2:8 w/w/w), alone (PaMP) and in combination with an aerosolization enhancer, L-leucine (20 % w/w, PaMPL). The formulation PaMPL consisted of hollow, spherical, dimpled particles (<5 μm) and showed good aerosolization behaviour with a fine particle fraction of 70 %. Solid-state characterization of formulations with and without L-leucine confirmed the amorphous nature of moxifloxacin and pretomanid and the crystalline nature of pyrazinamide with polymorphic transformation after the spray drying process. Further, the X-ray photoelectron spectroscopic analysis revealed the predominant surface composition of L-leucine on PaMPL dry powder particles. The dose-response cytotoxicity results showed pyrazinamide and moxifloxacin were non-toxic in both A549 and Calu-3 cell lines up to 150 µg/mL. However, the cell viability gradually decreased to 50 % when the pretomanid concentration increased to 150 µg/mL. The in vitro efficacy studies demonstrated that the triple combination formulation had more prominent antibacterial activity with a minimum inhibitory concentration (MIC) of 1 µg/mL against the MTb H37Rv strain as compared to individual drugs. In conclusion, the triple combination of pretomanid, moxifloxacin, and pyrazinamide as an inhalable dry powder formulation will potentially improve treatment efficacy with fewer systemic side effects in patients suffering from latent and multidrug-resistant TB.
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Affiliation(s)
- Claire Fan
- School of Pharmacy, University of Otago, 18 Frederick St, Dunedin 9054, New Zealand
| | - Basanth Babu Eedara
- School of Pharmacy, University of Otago, 18 Frederick St, Dunedin 9054, New Zealand; Transpire Bio Inc., 2945 W Corporate Lakes Blvd Suite A, Weston, FL 33331, USA
| | - Shubhra Sinha
- School of Pharmacy, University of Otago, 18 Frederick St, Dunedin 9054, New Zealand
| | - Mohammad Khaja Mafij Uddin
- Infectious Diseases Division, International Centre for Diarrhoeal Disease Research, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
| | - Colin Doyle
- The University of Auckland, 20 Symonds Street, Auckland, New Zealand
| | - Sayera Banu
- Infectious Diseases Division, International Centre for Diarrhoeal Disease Research, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
| | - Shyamal C Das
- School of Pharmacy, University of Otago, 18 Frederick St, Dunedin 9054, New Zealand.
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Chabala C, Wobudeya E, van der Zalm MM, Kapasa M, Raichur P, Mboizi R, Palmer M, Kinikar A, Hissar S, Mulenga V, Mave V, Musoke P, Hesseling AC, McIlleron H, Gibb D, Crook A, Turkova A. Clinical outcomes in children living with HIV treated for non-severe tuberculosis in the SHINE Trial. Clin Infect Dis 2024:ciae193. [PMID: 38592950 DOI: 10.1093/cid/ciae193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/23/2024] [Accepted: 04/05/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Children living with HIV(CLWH) are at high risk of tuberculosis(TB) and face poor outcomes, despite antiretroviral treatment(ART). We evaluated outcomes in CLWH and HIV-uninfected children treated for non-severe TB in the SHINE trial. METHODS SHINE was a randomized trial that enrolled children aged <16 years with smear-negative, non-severe TB who were randomized to receive 4 vs 6 months of TB treatment and followed for 72 weeks. We assessed TB relapse/recurrence, mortality, hospitalizations, grade ≥3 adverse events by HIV status, and HIV virological suppression in CLWH. RESULTS Of 1204 enrolled, 127(11%) were CLWH, of similar age (median(IQR) 3.6(1.2, 10.3) vs. 3.5(1.5, 6.9)years, p= 0.07), but more underweight (WAZ; -2.3(-3.3, -0.8) vs -1.0(-1.8, -0.2), p<0.01) and anemic (hemoglobin 9.5(8.7, 10.9) vs 11.5(10.4, 12.3)g/dl, p<0.01) compared to HIV-uninfected children. 68(54%) CLWH were ART-naïve; baseline median CD4 count 719(241-1134) cells/mm3, CD4% 16(10-26)%). CLWH were more likely to be hospitalized (aOR=2.4(1.3-4.6)) and die (aHR(95%CI) 2.6(1.2,5.8)). HIV status, age <3 years (aHR 6.3(1.5,27.3)), malnutrition (aHR 6.2(2.4,15.9)) and hemoglobin <7g/dl(aHR 3.8(1.3,11.5) independently predicted mortality. Among children with available VL, 45% and 61% CLWH had VL<1000copies/ml at weeks 24 and 48, respectively. There was no difference in the effect of randomized treatment duration (4 vs 6 months) on TB treatment outcomes by HIV status (p for interaction=0.42). CONCLUSIONS We found no evidence of a difference in TB outcomes between 4 and 6 months of treatment for CLWH treated for non-severe TB. Irrespective of TB treatment duration, CLWH had higher rates of mortality and hospitalization than HIV-uninfected counterparts.
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Affiliation(s)
- Chishala Chabala
- University of Zambia, School of Medicine, Department of Paediatrics, Lusaka, Zambia
- University Teaching Hospital-Children's Hospital, Lusaka, Zambia
- University of Cape Town, Faculty of Health Sciences, Department of Medicine, Division of Clinical Pharmacology, Cape Town, South Africa
| | - Eric Wobudeya
- Makerere University-John Hopkins Hospital Research Collaboration, Mulago Hospital, Kampala, Uganda
| | - Marieke M van der Zalm
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Stellenbosch University, Cape Town, South Africa
| | - Monica Kapasa
- University Teaching Hospital-Children's Hospital, Lusaka, Zambia
| | - Priyanka Raichur
- Byramjee Jeejeebhoy Medical College- Johns Hopkins University Clinical Research Site, Pune, India
| | - Robert Mboizi
- Makerere University-John Hopkins Hospital Research Collaboration, Mulago Hospital, Kampala, Uganda
| | - Megan Palmer
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Stellenbosch University, Cape Town, South Africa
| | - Aarti Kinikar
- Byramjee Jeejeebhoy Medical College- Johns Hopkins University Clinical Research Site, Pune, India
| | - Syed Hissar
- Indian Council of Medical Research - National Institute for Research in Tuberculosis, Chennai, India
| | - Veronica Mulenga
- University of Zambia, School of Medicine, Department of Paediatrics, Lusaka, Zambia
- University Teaching Hospital-Children's Hospital, Lusaka, Zambia
| | - Vidya Mave
- Byramjee Jeejeebhoy Medical College- Johns Hopkins University Clinical Research Site, Pune, India
| | - Philippa Musoke
- Makerere University-John Hopkins Hospital Research Collaboration, Mulago Hospital, Kampala, Uganda
| | - Anneke C Hesseling
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Stellenbosch University, Cape Town, South Africa
| | - Helen McIlleron
- University of Cape Town, Faculty of Health Sciences, Department of Medicine, Division of Clinical Pharmacology, Cape Town, South Africa
| | - Diana Gibb
- Medical Research Council-Clinical Trials Unit at University College London, Institute of Clinical Trials and Methodology, London, United Kingdom
| | - Angela Crook
- Medical Research Council-Clinical Trials Unit at University College London, Institute of Clinical Trials and Methodology, London, United Kingdom
| | - Anna Turkova
- Medical Research Council-Clinical Trials Unit at University College London, Institute of Clinical Trials and Methodology, London, United Kingdom
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49
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Jiménez-Martín D, García-Bocanegra I, Risalde MA, Napp S, Domínguez M, Romero B, Moreno I, Martínez R, Cano-Terriza D. Mycobacterium tuberculosis complex in domestic goats in Southern Spain. Prev Vet Med 2024; 227:106204. [PMID: 38604014 DOI: 10.1016/j.prevetmed.2024.106204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/13/2024]
Abstract
Tuberculosis (TB) is a zoonotic infectious disease caused by bacteria belonging to the Mycobacterium tuberculosis complex (MTC), which can affect a wide variety of domestic and wild animal species. Although the role of goats as a reservoir of MTC bacteria has been evidenced, information about the circulation of MTC strains in this species is still very scarce. The aim of the present study was to determine the seroprevalence, spatial distribution, risk factors and MTC spoligotypes circulating in goats from Andalusia (Southern Spain), the Spanish region with the largest goat census and a hotspot area of TB in both cattle and wild ungulates. A total of 2155 serum samples from 80 goat flocks were analyzed by an in-house ELISA using the P22 protein complex as a coating antigen. Antibodies against MTC were detected in 473 goats (21.9%, 95% CI: 20.2-23.7) and the true seroprevalence was 22.3% (95% CI: 20.6-24.1). Seropositivity was found in 72 (90.0%) of the 80 flocks analyzed. The generalized estimating equation model showed that the management system (higher seroprevalence on intensive and semi-intensive farms), and the presence of hospital pens inside the regular stables, were risk factors potentially associated with MTC exposure in goats in Southern Spain. The spatial analysis identified a significant spatial cluster (p < 0.001) in Eastern Andalusia. A total of 16 different MTC spoligotypes, including five of M. caprae and eleven of M. bovis, were identified in goats between 2015 and 2022 in the study area, with SB0157 as the most frequently isolated. The results obtained indicate widespread and non-homogeneous spatial distribution of MTC in goat herds from Southern Spain. The high individual and herd-level seroprevalence values found suggest that goats could play a significant role in the maintenance and transmission of MTC in the study area. Our results highlight the importance of implementing control measures in this species.
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Affiliation(s)
- Débora Jiménez-Martín
- Departamento de Sanidad Animal, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain
| | - Ignacio García-Bocanegra
- Departamento de Sanidad Animal, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain; CIBERINFEC, ISCIII - CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Spain.
| | - María A Risalde
- CIBERINFEC, ISCIII - CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Spain; Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain
| | - Sebastián Napp
- IRTA, Animal Health Research Centre (CReSA IRTA-UAB), Bellaterra, Spain
| | - Mercedes Domínguez
- Unidad de Inmunología Microbiana, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Beatriz Romero
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET) y Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Inmaculada Moreno
- Unidad de Inmunología Microbiana, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Remigio Martínez
- Departamento de Sanidad Animal, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain
| | - David Cano-Terriza
- Departamento de Sanidad Animal, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain; CIBERINFEC, ISCIII - CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Spain
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50
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Li C, Wang J, Xu JF, Pi J, Zheng B. Roles of HIF-1α signaling in Mycobacterium tuberculosis infection: New targets for anti-TB therapeutics? Biochem Biophys Res Commun 2024; 711:149920. [PMID: 38615574 DOI: 10.1016/j.bbrc.2024.149920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/29/2024] [Accepted: 04/08/2024] [Indexed: 04/16/2024]
Abstract
Tuberculosis (TB), a deadly infectious disease induced by Mycobacterium tuberculosis (Mtb), continues to be a global public health issue that kill millions of patents every year. Despite significant efforts have been paid to identify effective TB treatments, the emergence of drug-resistant strains of the disease and the presence of comorbidities in TB patients urges us to explore the detailed mechanisms involved in TB immunity and develop more effective innovative anti-TB strategies. HIF-1α, a protein involved in regulating cellular immune responses during TB infection, has been highlighted as a promising target for the development of novel strategies for TB treatment due to its critical roles in anti-TB host immunity. This review provides a summary of current research progress on the roles of HIF-1α in TB infection, highlighting its importance in regulating the host immune response upon Mtb infection and summarizing the influences and mechanisms of HIF-1α on anti-TB immunological responses of host cells. This review also discusses the various challenges associated with developing HIF-1α as a target for anti-TB therapies, including ensuring specificity and avoiding off-target effects on normal cell function, determining the regulation and expression of HIF-1α in TB patients, and developing drugs that can inhibit HIF-1α. More deep understanding of the molecular mechanisms involved in HIF-1α signaling, its impact on TB host status, and systematic animal testing and clinical trials may benefit the optimization of HIF-1α as a novel therapeutic target for TB.
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Affiliation(s)
- Chaowei Li
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, School of Medical Technology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Jiajun Wang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, School of Medical Technology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Jun-Fa Xu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, School of Medical Technology, Guangdong Medical University, Dongguan, Guangdong, China.
| | - Jiang Pi
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, School of Medical Technology, Guangdong Medical University, Dongguan, Guangdong, China.
| | - Biying Zheng
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, School of Medical Technology, Guangdong Medical University, Dongguan, Guangdong, China.
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