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Cunningham F, Esquivias J, Fernández-Menéndez R, Pérez A, Guardia A, Escribano J, Rivero C, Vimal M, Cacho M, de Dios-Antón P, Martínez-Martínez MS, Jiménez E, Huertas Valentín L, Rebollo-López MJ, López-Román EM, Sousa-Morcuende V, Rullas J, Neu M, Chung CW, Bates RH. Exploring the SAR of the β-Ketoacyl-ACP Synthase Inhibitor GSK3011724A and Optimization around a Genotoxic Metabolite. ACS Infect Dis 2020; 6:1098-1109. [PMID: 32196311 DOI: 10.1021/acsinfecdis.9b00493] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the course of optimizing a novel indazole sulfonamide series that inhibits β-ketoacyl-ACP synthase (KasA) of Mycobacterium tuberculosis, a mutagenic aniline metabolite was identified. Further lead optimization efforts were therefore dedicated to eliminating this critical liability by removing the embedded aniline moiety or modifying its steric or electronic environment. While the narrow SAR space against the target ultimately rendered this goal unsuccessful, key structural knowledge around the binding site of this underexplored target for TB was generated to inform future discovery efforts.
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Affiliation(s)
- Fraser Cunningham
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | - Jorge Esquivias
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | | | - Arancha Pérez
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | - Ana Guardia
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | - Jaime Escribano
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | - Cristina Rivero
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | - Mythily Vimal
- GlaxoSmithKline, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Mónica Cacho
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | - Paco de Dios-Antón
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | | | - Elena Jiménez
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | | | | | - Eva María López-Román
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | | | - Joaquín Rullas
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
| | - Margaret Neu
- GlaxoSmithKline, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Chun-wa Chung
- GlaxoSmithKline, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Robert H. Bates
- Global Health R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, 28760 Madrid, Spain
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102
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Moreira M, Ruggiero A, Esposito L, Choi HG, Kim HJ, Berisio R. Structural features of HtpG Mtb and HtpG-ESAT6 Mtb vaccine antigens against tuberculosis: Molecular determinants of antigenic synergy and cytotoxicity modulation. Int J Biol Macromol 2020; 158:305-317. [PMID: 32380102 DOI: 10.1016/j.ijbiomac.2020.04.252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/18/2020] [Accepted: 04/28/2020] [Indexed: 11/26/2022]
Abstract
Vaccine development against tuberculosis is an urgent need as the only available vaccine, M. bovis Bacillus Calmette Guerin (BCG), is unable to provide significant protection in adults. Among newly identified antigens, Rv2299c is an excellent candidate for the rational design of an effective multi-antigenic TB vaccine. Also, when fused to the T cell antigen ESAT6, it becomes highly effective in boosting BCG immunization and it adopts low cytotoxicity compared to ESAT6. We here characterize these proteins by coupling various biophysical techniques to cytofluorimetry and computational studies. Altogether, our data provide an experimental evidence of the role of Rv2299c as a dimeric and highly thermostable molecular chaperone, here denoted as HtpGMtb. Molecular dynamics simulations show that ATP rigidly anchors the ATP-binding loop in a conformation incompatible with the structure of the free enzyme. We also show that HtpGMtb dimeric state is an important molecular feature for the improved antigenic and cytotoxic properties of HtpG-ESAT6Mtb. Indeed, structural features of HtpG-ESAT6Mtb show that not only does this molecule combine the antigenic properties of HtpGMtb and ESAT6, but HtpGMtb locks ESAT6 in a dimeric state, thus improving its cytotoxicity properties. The data presented here provide solid basis for the rational design of upgraded antigens.
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Affiliation(s)
- Miguel Moreira
- Istituto di Biostrutture e Bioimmagini, C.N.R., Via Mezzocannone 16, I-80134 Napoli, Italy
| | - Alessia Ruggiero
- Istituto di Biostrutture e Bioimmagini, C.N.R., Via Mezzocannone 16, I-80134 Napoli, Italy
| | - Luciana Esposito
- Istituto di Biostrutture e Bioimmagini, C.N.R., Via Mezzocannone 16, I-80134 Napoli, Italy
| | - Han-Gyu Choi
- Department of Microbiology, and Medical Science, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Hwa-Jung Kim
- Department of Microbiology, and Medical Science, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Rita Berisio
- Istituto di Biostrutture e Bioimmagini, C.N.R., Via Mezzocannone 16, I-80134 Napoli, Italy.
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103
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León-Janampa N, Zimic M, Shinkaruk S, Quispe-Marcatoma J, Gutarra A, Le Bourdon G, Gayot M, Changanaqui K, Gilman RH, Fouquet E, Sheen P, Szlosek M. Synthesis, characterization and bio-functionalization of magnetic nanoparticles to improve the diagnosis of tuberculosis. NANOTECHNOLOGY 2020; 31:175101. [PMID: 31931490 DOI: 10.1088/1361-6528/ab6ab1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Mycobacterium tuberculosis is the cause of one of the diseases with the highest mortality and morbidity rate in the Americas and in the world. In developing countries, the diagnosis of tuberculosis (TB) is based on baciloscopy and bacteriological cultures. The first method has a low sensitivity, and the second can take several weeks to reach a confirmatory diagnosis. The lack of a rapid diagnosis compromises the efforts to control this disease and favors the transmission of tuberculosis to the susceptible population. In this work, we present the synthesis, amine-silanization, characterization and bio-functionalization of magnetic nanoparticles (MNPs) to develop a sandwich ELISA to detect and concentrate antigens from M. tuberculosis. For this purpose, a recombinant mycobacterial heat shock protein Hsp16.3, which contributes to the persistence of TB, was cloned and expressed in the E. coli system. Polyclonal antibodies anti-Hsp16.3 were produced in a rabbit and in mice. Magnetic nanoparticles were synthesized by co-precipitation, amine-functionalized and characterized by several physical-chemical methods. The XRD, Mossbauer spectroscopy, zeta potential, TEM, and FTIR all proved the successful preparation of the MNPs showing a diffraction crystal diameter of 10.48 ± 2.56 nm, superficial net charge of [Formula: see text]: +23.57 ± 2.87 mV, characteristic patterns of magnetite and a structure similar to a sphere. Additionally, it showed a magnetization saturation of 37.06 emu.g-1. For the functionalization of nanoparticle surfaces with anti-Hsp16.3, the active ester method was used for bond formation, and parameters such as time of incubation, coupling agents ratio (EDC/NHS) and concentration as well as surface saturation level of amine-silanized MNPs (MNP@Si@NH2) were standardized. Finally, bio-functionalized MNPs were used to detect, fix and concentrate the recombinant antigen Hsp16.3 from M. tuberculosis in a sandwich ELISA-MNP assay.
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Affiliation(s)
- Nancy León-Janampa
- Laboratorio de Bioinformática y Biología Molecular. Facultad de Ciencias y Filosofía. Universidad Peruana Cayetano Heredia, Lima, Peru. Univ. Bordeaux, ISM, Institut des Sciences Moléculaires, UMR 5255 CNRS, 33405 Talence, France
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104
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Pharmacophore modelling, QSAR study, molecular docking and insilico ADME prediction of 1,2,3-triazole and pyrazolopyridones as DprE1 inhibitor antitubercular agents. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2638-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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105
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Spekker O, Hunt DR, Paja L, Molnár E, Pálfi G, Schultz M. Tracking down the White Plague: The skeletal evidence of tuberculous meningitis in the Robert J. Terry Anatomical Skeletal Collection. PLoS One 2020; 15:e0230418. [PMID: 32187217 PMCID: PMC7080279 DOI: 10.1371/journal.pone.0230418] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 02/29/2020] [Indexed: 11/22/2022] Open
Abstract
Paleopathological diagnosis of tuberculosis (TB) essentially relies on the identification of macroscopic lesions in the skeleton that can be related to different manifestations of TB. Among these alterations, granular impressions (GIs) on the inner skull surface have been considered as pathognomonic features of tuberculous meningitis (TBM). GIs may be established by pressure atrophy of the tubercles formed on the outermost meningeal layer during later stages of TBM. Although GIs were used as diagnostic criteria for TBM in the paleopathological practice since the late 20th century, their diagnostic value has been questioned. To contribute to strengthening the diagnostic value of GIs, a macroscopic investigation–focusing on the macromorphological characteristics and frequency of GIs–was performed on skeletons of known cause of death from the Terry Collection. The χ2 analysis of our data revealed that GIs were significantly more common in individuals who died of TB than in individuals who died of non-TB causes. Furthermore, GIs were localized on the inner surface of the skull base and of the lower lateral skull vault. The localization pattern and distribution of GIs on the endocranial surface resemble that of the tubercles observed in the affected meninges during the pathogenesis of TBM. Our results strengthen the tuberculous origin of GIs and imply that they can be considered as specific signs of TBM. Therefore, GIs can be used as diagnostic criteria for TBM in the paleopathological practice, and the diagnosis of TBM can be established with a high certainty when GIs are present in ancient human bone remains.
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Affiliation(s)
- Olga Spekker
- Department of Biological Anthropology, University of Szeged, Szeged, Hungary
- * E-mail:
| | - David R. Hunt
- Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia, United States of America
| | - László Paja
- Department of Biological Anthropology, University of Szeged, Szeged, Hungary
| | - Erika Molnár
- Department of Biological Anthropology, University of Szeged, Szeged, Hungary
| | - György Pálfi
- Department of Biological Anthropology, University of Szeged, Szeged, Hungary
| | - Michael Schultz
- Institut für Anatomie und Embryologie, Zentrum Anatomie, Universitätsmedizin Göttingen, Göttingen, Germany
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106
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Bayat F, Hosseinpour-Moghadam R, Mehryab F, Fatahi Y, Shakeri N, Dinarvand R, Ten Hagen TLM, Haeri A. Potential application of liposomal nanodevices for non-cancer diseases: an update on design, characterization and biopharmaceutical evaluation. Adv Colloid Interface Sci 2020; 277:102121. [PMID: 32092487 DOI: 10.1016/j.cis.2020.102121] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/03/2020] [Accepted: 02/03/2020] [Indexed: 12/12/2022]
Abstract
Liposomes, lipid-based vesicular systems, have attracted major interest as a means to improve drug delivery to various organs and tissues in the human body. Recent literature highlights the benefits of liposomes for use as drug delivery systems, including encapsulating of both hydrophobic and hydrophilic cargos, passive and active targeting, enhanced drug bioavailability and therapeutic effects, reduced systemic side effects, improved cargo penetration into the target tissue and triggered contents release. Pioneering work of liposomes researchers led to introduction of long-circulating, ligand-targeted and triggered release liposomes, as well as, liposomes containing nucleic acids and vesicles containing combination of cargos. Altogether, these findings have led to widespread application of liposomes in a plethora of areas from cancer to conditions such as cardiovascular, neurologic, respiratory, skin, autoimmune and eye disorders. There are numerous review articles on the application of liposomes in treatment of cancer, which seems the primary focus, whereas other diseases also benefit from liposome-mediated treatments. Therefore, this article provides an illustrated detailed overview of liposomal formulations, in vitro characterization and their applications in different disorders other than cancer. Challenges and future directions, which must be considered to obtain the most benefit from applications of liposomes in these disorders, are discussed.
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Affiliation(s)
- Fereshteh Bayat
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Hosseinpour-Moghadam
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Mehryab
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yousef Fatahi
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Niayesh Shakeri
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Rassoul Dinarvand
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Timo L M Ten Hagen
- Laboratory Experimental Surgical Oncology, Section Surgical Oncology, Department of Surgery, Erasmus MC Cancer Center, Rotterdam, the Netherlands.
| | - Azadeh Haeri
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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107
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Gomes CRB, de Souza MVN, Facchinetti V. A Review on Onychine and its Analogs: Synthesis and Biological Activity. Curr Org Synth 2020; 17:3-22. [PMID: 32103713 DOI: 10.2174/1570179417666191218112842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/07/2019] [Accepted: 12/18/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Onychine is a 4-azafluorenone alkaloid isolated from the Annonaceae family, in low concentrations. Onychine and its analogs exhibit a wide range of pharmacological activities such as antifungal, antibacterial, anticancer, and antimalarial. Because of the high bioactivity of some 4-azafluorenone derivatives, several synthetic methods have been developed for their procurement. OBJECTIVE Considering the importance of these alkaloids, we aim to present the main synthetic approaches to onychines and its derivatives and the biological activity of some 4-azafluorenones. METHODS The most prominent methodologies for the synthesis of onychines were reviewed. RESULTS In this work, we cover many synthetic approaches for the synthesis of onychine and 4-azafluorenone derivatives including intramolecular cyclizations, multicomponent reactions, microwave-assisted multicomponent reactions, Diels-alder reactions, among others. Moreover, we also review the biological activity of 4-azafluorenones. CONCLUSION 4-azafluorenones have risen as prominent structures in medicinal chemistry; however, most of the time, access to new derivatives involves toxic catalysts, harsh reaction conditions, and long-step procedures. Therefore, the development of new synthetic routes with more operational simplicity, simple purification procedure, good yields, and low environmental impact, is desirable.
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Affiliation(s)
- Claudia R B Gomes
- Fundacao Oswaldo Cruz, Instituto de Tecnologia em Farmacos - Farmanguinhos. Rua Sizenando Nabuco 100, Manguinhos, 21041- 250, RJ, Brazil
| | - Marcus V N de Souza
- Fundacao Oswaldo Cruz, Instituto de Tecnologia em Farmacos - Farmanguinhos. Rua Sizenando Nabuco 100, Manguinhos, 21041- 250, RJ, Brazil
| | - Victor Facchinetti
- Fundacao Oswaldo Cruz, Instituto de Tecnologia em Farmacos - Farmanguinhos. Rua Sizenando Nabuco 100, Manguinhos, 21041- 250, RJ, Brazil
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108
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Upregulation of Cytokines and Differentiation of Th17 and Treg by Dendritic Cells: Central Role of Prostaglandin E2 Induced by Mycobacterium bovis. Microorganisms 2020; 8:microorganisms8020195. [PMID: 32023904 PMCID: PMC7074778 DOI: 10.3390/microorganisms8020195] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/20/2020] [Accepted: 01/28/2020] [Indexed: 12/16/2022] Open
Abstract
Mycobacterium bovis (M. bovis) is a zoonotic pathogen that causes bovine and human tuberculosis. Dendritic cells play a critical role in initiating and regulating immune responses by promoting antigen-specific T-cell activation. Prostaglandin E2 (PGE2)-COX signaling is an important mediator of inflammation and immunity and might be involved in the pathogenesis of M. bovis infection. Therefore, this study aimed to reveal the character of PGE2 in the differentiation of naïve CD4+ T cells induced by infected dendritic cells (DCs). Murine bone marrow-derived DCs were pre-infected with M. bovis and its attenuated strain M. bovis bacillus Calmette-Guérin (BCG). Then, the infected DCs were co-cultured with naïve CD4+ T cells with or without the cyclooxygenase (COX) inhibitor indomethacin. Quantitative RT-PCR analysis and protein detection showed that PGE2/COX-2 signaling was activated, shown by the upregulation of PGE2 production as well as COX-2 and microsomal PGE2 synthase (mPGES1) transcription in DCs specifically induced by M. bovis and BCG infection. The further co-culture of infected DCs with naïve CD4+ T cells enhanced the generation of inflammatory cytokines IL-17 and IL-23, while indomethacin suppressed their production. Following this, the differentiation of regulatory T cells (Treg) and Th17 cell subsets was significantly induced by the infected DCs rather than uninfected DCs. Meanwhile, M. bovis infection stimulated significantly higher levels of IL-17 and IL-23 and the differentiation of Treg and Th17 cell subsets, while BCG infection led to higher levels of TNF-α and IL-12, but lower proportions of Treg and Th17 cells. In mice, M. bovis infection generated more bacterial load and severe abnormalities in spleens and lungs, as well as higher levels of COX-2, mPGE2 expression, Treg and Th17 cell subsets than BCG infection. In conclusion, PGE2/COX-2 signaling was activated in DCs by M. bovis infection and regulated differentiation of Treg and Th17 cell subsets through the crosstalk between DCs and naive T cells under the cytokine atmosphere of IL-17 and IL-23, which might contribute to M. bovis pathogenesis in mice.
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109
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Arumugam N, Almansour AI, Kumar RS, Mohammad Ali Al-Aizari AJ, Alaqeel SI, Kansız S, Krishna VS, Sriram D, Dege N. Regio- and diastereoselective synthesis of spiropyrroloquinoxaline grafted indole heterocyclic hybrids and evaluation of their anti-Mycobacterium tuberculosis activity. RSC Adv 2020; 10:23522-23531. [PMID: 35517328 PMCID: PMC9054781 DOI: 10.1039/d0ra02525a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/29/2020] [Indexed: 12/21/2022] Open
Abstract
An efficient and eco compatible approach for the regio- and stereoselective synthesis of structurally diverse novel spiropyrrolidine tethered indole hybrids in excellent yields employing a one-pot multicomponent 1,3-dipolar cycloaddition strategy.
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Affiliation(s)
- Natarajan Arumugam
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | | | - Raju Suresh Kumar
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | | | - Shatha Ibrahim Alaqeel
- Department of Chemistry
- College of Science
- King Saud University (034)
- Riyadh 11495
- Saudi Arabia
| | - Sevgi Kansız
- Department of Fundamental Sciences
- Faculty of Engineering
- Samsun University
- Samsun
- Turkey
| | - Vagolu Siva Krishna
- Medicinal Chemistry and Antimycobacterial Research Laboratory
- Pharmacy Group
- Birla Institute of Technology & Science-Pilani
- Hyderabad Campus
- Hyderabad 500078
| | - Dharmarajan Sriram
- Medicinal Chemistry and Antimycobacterial Research Laboratory
- Pharmacy Group
- Birla Institute of Technology & Science-Pilani
- Hyderabad Campus
- Hyderabad 500078
| | - Necmi Dege
- Department of Physics
- Faculty of Arts and Sciences
- Ondokuz Mayıs University
- Samsun
- Turkey
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110
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Sikkhajan Y, Sirichokchatchawan W. Factors associated with patient delay among tuberculosis patients in border hospitals, Chiang Rai province, Thailand. JOURNAL OF HEALTH RESEARCH 2019. [DOI: 10.1108/jhr-04-2019-0063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Purpose
The purpose of this paper is to determine the factors associated with patient delay among tuberculosis patients in border hospitals, Chiang Rai province, Thailand.
Design/methodology/approach
A cross-sectional study was conducted in the four biggest border hospitals in Chiang Rai province, Thailand during May to July 2018 among 103 identified TB cases. Data were collected by a face-to-face interview with structured questionnaire on patients’ general characteristics, HIV status and patient delay status. Descriptive statistics were used to analyze the patients’ general characteristics, HIV and patient delay status. The association among variables and patient delay was analyzed by χ2-test. The variables with p-value<0.20 obtained in bivariate analysis were further analyzed by binary logistic regression and considered significant with p-value<0.05.
Findings
All patients enrolled, most were reported with patient delay (65.0 percent). Bivariate analysis demonstrated that level of education, nationality and HIV status were associated factors for patient delay. Among these factors, binary logistic regression revealed that HIV negative TB patients were increased 6.806-fold odds of being patient delay (OR = 6.806; 95% CI: 1.174–39.462), while non-Thai TB patients were also increased 2.824-fold odds of being patient delay (OR = 2.824; 95% CI: 1.041–7.660).
Originality/value
Patient delay among TB patients in Chiang Rai province was high. This study further supports the requirement on promoting of TB knowledge and awareness emphasized on non-Thai population and general public along the border areas of Chiang Rai province.
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111
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Sousa GJB, Garces TS, Pereira MLD, Moreira TMM, Silveira GMD. Temporal pattern of tuberculosis cure, mortality, and treatment abandonment in Brazilian capitals. Rev Lat Am Enfermagem 2019; 27:e3218. [PMID: 31826160 PMCID: PMC6896801 DOI: 10.1590/1518-8345.3019.3218] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 08/15/2019] [Indexed: 12/02/2022] Open
Abstract
Objective: to analyze the temporal pattern of tuberculosis cure, mortality, treatment abandonment in Brazilian capitals. Method: this is an ecological study whose data source was the Information System of Notifiable Diseases for Tuberculosis (Sistema de Informação de Agravos de Notificação para Tuberculose). For analysis of temporal evolution, regressions by join points were performed considering the annual percentage variation and the significance of the trend change with 95% confidence interval. Results: 542,656 cases of tuberculosis were found, with emphasis on a 3% decrease per year in the cure rate for Campo Grande (interval: −5.0 - −0.9) and a 3.5% increase for Rio de Janeiro (interval: 1.9 - 4.7). Regarding abandonment, it decreased 10.9% per year in Rio Branco (interval: −15.8 - −5.7) and increased 12.8% per year in Fortaleza (interval: 7.6 - 18.3). For mortality, a decreasing or stationary tendency was identified, with a greater decrease (7.8%) for Porto Velho (interval:−11.0 - −5.0) and a lower one (2.5%) in Porto Alegre (interval:−4.5 - −0.6). Conclusion: the rates of cure and abandonment are far from the ones recommended by the World Health Organization, showing that Brazilian capitals need interventions aimed at changing this pattern.
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Affiliation(s)
- George Jó Bezerra Sousa
- Universidade Estadual do Ceará, Departamento de Enfermagem, Fortaleza, CE, Brazil.,Bolsista da Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico, Fortaleza, CE, Brazil
| | - Thiago Santos Garces
- Universidade Estadual do Ceará, Departamento de Enfermagem, Fortaleza, CE, Brazil.,Bolsista da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brazil
| | | | | | - Germana Maria da Silveira
- Universidade Estadual do Ceará, Departamento de Enfermagem, Fortaleza, CE, Brazil.,Bolsista da Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico, Fortaleza, CE, Brazil
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112
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Pennisi M, Russo G, Sgroi G, Bonaccorso A, Parasiliti Palumbo GA, Fichera E, Mitra DK, Walker KB, Cardona PJ, Amat M, Viceconti M, Pappalardo F. Predicting the artificial immunity induced by RUTI® vaccine against tuberculosis using universal immune system simulator (UISS). BMC Bioinformatics 2019; 20:504. [PMID: 31822272 PMCID: PMC6904993 DOI: 10.1186/s12859-019-3045-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 08/21/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Tuberculosis (TB) represents a worldwide cause of mortality (it infects one third of the world's population) affecting mostly developing countries, including India, and recently also developed ones due to the increased mobility of the world population and the evolution of different new bacterial strains capable to provoke multi-drug resistance phenomena. Currently, antitubercular drugs are unable to eradicate subpopulations of Mycobacterium tuberculosis (MTB) bacilli and therapeutic vaccinations have been postulated to overcome some of the critical issues related to the increase of drug-resistant forms and the difficult clinical and public health management of tuberculosis patients. The Horizon 2020 EC funded project "In Silico Trial for Tuberculosis Vaccine Development" (STriTuVaD) to support the identification of new therapeutic interventions against tuberculosis through novel in silico modelling of human immune responses to disease and vaccines, thereby drastically reduce the cost of clinical trials in this critical sector of public healthcare. RESULTS We present the application of the Universal Immune System Simulator (UISS) computational modeling infrastructure as a disease model for TB. The model is capable to simulate the main features and dynamics of the immune system activities i.e., the artificial immunity induced by RUTI® vaccine, a polyantigenic liposomal therapeutic vaccine made of fragments of Mycobacterium tuberculosis cells (FCMtb). Based on the available data coming from phase II Clinical Trial in subjects with latent tuberculosis infection treated with RUTI® and isoniazid, we generated simulation scenarios through validated data in order to tune UISS accordingly to STriTuVaD objectives. The first case simulates the establishment of MTB latent chronic infection with some typical granuloma formation; the second scenario deals with a reactivation phase during latent chronic infection; the third represents the latent chronic disease infection scenario during RUTI® vaccine administration. CONCLUSIONS The application of this computational modeling strategy helpfully contributes to simulate those mechanisms involved in the early stages and in the progression of tuberculosis infection and to predict how specific therapeutical strategies will act in this scenario. In view of these results, UISS owns the capacity to open the door for a prompt integration of in silico methods within the pipeline of clinical trials, supporting and guiding the testing of treatments in patients affected by tuberculosis.
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Affiliation(s)
- Marzio Pennisi
- Department of Mathematics and Computer Science, University of Catania, 95125 Catania, Italy
| | - Giulia Russo
- Department of Drug Sciences, University of Catania, Italy, 95125 Catania, Italy
| | - Giuseppe Sgroi
- Department of Mathematics and Computer Science, University of Catania, 95125 Catania, Italy
| | - Angela Bonaccorso
- Department of Drug Sciences, University of Catania, Italy, 95125 Catania, Italy
| | | | | | - Dipendra Kumar Mitra
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Kenneth B. Walker
- TuBerculosis Vaccine Initiative (TBVI), Lelystad, 8219 The Netherlands
| | - Pere-Joan Cardona
- Archivel Farma, S.L, 08916 Badalona, Spain
- Experimental Tuberculosis Unit (UTE), Fundació Institut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona (UAB), Badalona, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Enfermedades Respiratorias, Madrid, Spain
| | - Merce Amat
- Archivel Farma, S.L, 08916 Badalona, Spain
| | - Marco Viceconti
- Department of Industrial Engineering, Alma Mater Studiorum, University of Bologna, 40136 Bologna, Italy
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113
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Asai M, Li Y, Khara JS, Robertson BD, Langford PR, Newton SM. Galleria mellonella: An Infection Model for Screening Compounds Against the Mycobacterium tuberculosis Complex. Front Microbiol 2019; 10:2630. [PMID: 31824448 PMCID: PMC6882372 DOI: 10.3389/fmicb.2019.02630] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 10/29/2019] [Indexed: 01/08/2023] Open
Abstract
Drug screening models have a vital role in the development of novel antimycobacterial agents which are urgently needed to tackle drug-resistant tuberculosis (TB). We recently established the larvae of the insect Galleria mellonella (greater wax moth) as a novel infection model for the Mycobacterium tuberculosis complex. Here we demonstrate its use as a rapid and reproducible screen to evaluate antimycobacterial drug efficacy using larvae infected with bioluminescent Mycobacterium bovis BCG lux. Treatment improved larval survival outcome and, with the exception of pyrazinamide, was associated with a significant reduction in in vivo mycobacterial bioluminescence over a 96 h period compared to the untreated controls. Isoniazid and rifampicin displayed the greatest in vivo efficacy and survival outcome. Thus G. mellonella, infected with bioluminescent mycobacteria, can rapidly determine in vivo drug efficacy, and has the potential to significantly reduce and/or replace the number of animals used in TB research.
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Affiliation(s)
- Masanori Asai
- Section of Paediatric Infectious Diseases, Department of Infectious Disease, Imperial College London, London, United Kingdom
| | - Yanwen Li
- Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Jasmeet Singh Khara
- Section of Paediatric Infectious Diseases, Department of Infectious Disease, Imperial College London, London, United Kingdom.,Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Brian D Robertson
- MRC Centre for Molecular Bacteriology and Infection, Department of Infectious Disease, Imperial College London, London, United Kingdom
| | - Paul R Langford
- Section of Paediatric Infectious Diseases, Department of Infectious Disease, Imperial College London, London, United Kingdom
| | - Sandra M Newton
- Section of Paediatric Infectious Diseases, Department of Infectious Disease, Imperial College London, London, United Kingdom
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114
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Hakeem S, Singh I, Sharma P, Verma V, Chandra R. in silico screening and molecular dynamics simulations study to identify novel potent inhibitors against Mycobacterium tuberculosis DnaG primase. Acta Trop 2019; 199:105154. [PMID: 31445897 DOI: 10.1016/j.actatropica.2019.105154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 08/15/2019] [Accepted: 08/21/2019] [Indexed: 10/26/2022]
Abstract
Tuberculosis remains a major global health threat killing millions of people. Due to existing multiple drug resistance (MDR) and prolonged treatment it becomes necessary to explore novel drug targets in Mycobacterium tuberculosis (Mtb). DnaG primase, having a significant role in primer synthesis during initiation of DNA replication, has emerged as a promising drug target. The three dimensional (3D) model of its catalytic domain (Toprim) was constructed. Further, in silico screening of the three diverse chemical compound libraries against the modeled domain was carried out. Four top screened compounds were identified and evaluated by ADMET analysis. The stability of these compounds in complex with the Toprim domain was validated through 50 ns molecular dynamics simulations. Lys 101, Glu 137 and Asp 188 in the active site predominantly formed the hydrogen bonds with the top screened compounds. Hence, the drug-like compounds identified can be taken up for the further experimental investigation as anti-tubercular agents.
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115
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Gupta S, Kumar A, Singh K, Kumari R, Sharma A, Singh RK, Pandey SK, Anupurba S. Rv1273c, an ABC transporter of Mycobacterium tuberculosis promotes mycobacterial intracellular survival within macrophages via modulating the host cell immune response. Int J Biol Macromol 2019; 142:320-331. [PMID: 31593717 DOI: 10.1016/j.ijbiomac.2019.09.103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 08/18/2019] [Accepted: 09/13/2019] [Indexed: 02/06/2023]
Abstract
Mycobacterium proteins, especially cell wall associated proteins, interact with host macrophage to regulate the functions and cytokine production. So, identification and characterization of such proteins is essential for understanding tuberculosis pathogenesis. The role of the ABC transporter proteins in the pathophysiology and virulence of Mycobacterium tuberculosis is not clearly understood. In the present study, Rv1273c, an ABC transporter, has been expressed in a non-pathogenic and fast growing Mycobacterium smegmatis strain to explore its role in host pathogen interactions. Over expression of Rv1273c resulted in enhanced intracellular survival in macrophage as well as modified cell wall architecture. We found altered colony morphology and cell surface properties that might be linked with remodelling of bacterial cell wall which may help in the intracellular survival of mycobacterium. However, the enhanced intracellular survival was not found to be the consequence of an increased resistance to intracellular stresses. The activation of macrophage by Rv1273c was associated with perturbed cytokine production. Pharmacological inhibition experiment and western immunoblotting suggested that this altered cytokine profile was mediated possibly by NF-kB and p38 pathway in macrophage. Overall, the present findings indicated that Rv1273c enhanced mycobacterium persistence and mediated the evasion of immune responses during infection.
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Affiliation(s)
- Smita Gupta
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Arun Kumar
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Kamal Singh
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Richa Kumari
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ajay Sharma
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Rakesh K Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Satyendra K Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Shampa Anupurba
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
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Khanapurmath N, Kulkarni MV, Joshi SD, Anil Kumar G. A click chemistry approach for the synthesis of cyclic ureido tethered coumarinyl and 1-aza coumarinyl 1,2,3-triazoles as inhibitors of Mycobacterium tuberculosis H37Rv and their in silico studies. Bioorg Med Chem 2019; 27:115054. [DOI: 10.1016/j.bmc.2019.115054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/23/2019] [Accepted: 08/21/2019] [Indexed: 12/11/2022]
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117
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Khan MT, Kaushik AC, Bhatti AI, Zhang YJ, Zhang S, Wei AJ, Malik SI, Wei DQ. Marine Natural Products and Drug Resistance in Latent Tuberculosis. Mar Drugs 2019; 17:md17100549. [PMID: 31561525 PMCID: PMC6836121 DOI: 10.3390/md17100549] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 12/16/2022] Open
Abstract
Pyrazinamide (PZA) is the only drug for the elimination of latent Mycobacterium tuberculosis (MTB) isolates. However, due to the increased number of PZA-resistance, the chances of the success of global TB elimination seems to be more prolonged. Recently, marine natural products (MNPs) as an anti-TB agent have received much attention, where some compounds extracted from marine sponge, Haliclona sp. exhibited strong activity under aerobic and hypoxic conditions. In this study, we screened articles from 1994 to 2019 related to marine natural products (MNPs) active against latent MTB isolates. The literature was also mined for the major regulators to map them in the form of a pathway under the dormant stage. Five compounds were found to be more suitable that may be applied as an alternative to PZA for the better management of resistance under latent stage. However, the mechanism of actions behind these compounds is largely unknown. Here, we also applied synthetic biology to analyze the major regulatory pathway under latent TB that might be used for the screening of selective inhibitors among marine natural products (MNPs). We identified key regulators of MTB under latent TB through extensive literature mining and mapped them in the form of regulatory pathway, where SigH is negatively regulated by RshA. PknB, RshA, SigH, and RNA polymerase (RNA-pol) are the major regulators involved in MTB survival under latent stage. Further studies are needed to screen MNPs active against the main regulators of dormant MTB isolates. To reduce the PZA resistance burden, understanding the regulatory pathways may help in selective targets of MNPs from marine natural sources.
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Affiliation(s)
- Muhammad Tahir Khan
- Department of Bioinformatics and Biosciences, Capital University of Science and Technology, Islamabad 44000, Pakistan; (M.T.K.); (S.I.M.)
| | - Aman Chandra Kaushik
- The State Key Laboratory of Microbial Metabolism, College of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China;
| | - Aamer Iqbal Bhatti
- Department of Electrical Engineering, Capital University of Science and Technology, Islamabad 44000, Pakistan;
| | - Yu-Juan Zhang
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China;
| | - Shulin Zhang
- Department of Immunology and Microbiology, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China; (S.Z.)
| | - Amie Jinghua Wei
- Department of Immunology and Microbiology, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China; (S.Z.)
| | - Shaukat Iqbal Malik
- Department of Bioinformatics and Biosciences, Capital University of Science and Technology, Islamabad 44000, Pakistan; (M.T.K.); (S.I.M.)
| | - Dong Qing Wei
- The State Key Laboratory of Microbial Metabolism, College of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China;
- Correspondence: ; Tel.: +86-21-3420-4573
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118
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Reis WJ, Bozzi ÍA, Ribeiro MF, Halicki PC, Ferreira LA, Almeida da Silva PE, Ramos DF, de Simone CA, da Silva Júnior EN. Design of hybrid molecules as antimycobacterial compounds: Synthesis of isoniazid-naphthoquinone derivatives and their activity against susceptible and resistant strains of Mycobacterium tuberculosis. Bioorg Med Chem 2019; 27:4143-4150. [DOI: 10.1016/j.bmc.2019.07.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 07/17/2019] [Accepted: 07/26/2019] [Indexed: 02/06/2023]
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119
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González-Torres M, Guzmán-Beltrán S, Mata-Gómez MA, González-Valdez J, Leyva-Gómez G, Melgarejo-Ramírez Y, Brostow W, Velasquillo C, Zúñiga-Ramos J, Rodríguez-Talavera R. Synthesis, characterization, and in vitro evaluation of gamma radiation-induced PEGylated isoniazid. ELECTRON J BIOTECHN 2019. [DOI: 10.1016/j.ejbt.2019.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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120
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Dong H, Zheng L, Duan X, Zhao W, Chen J, Liu S, Sui G. Cytotoxicity analysis of ambient fine particle in BEAS-2B cells on an air-liquid interface (ALI) microfluidics system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 677:108-119. [PMID: 31054440 DOI: 10.1016/j.scitotenv.2019.04.203] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 04/04/2019] [Accepted: 04/12/2019] [Indexed: 06/09/2023]
Abstract
Ambient fine particle is a crucial indicator of air pollution brought into the air by sundry natural and public events. However, a comprehensive understanding of the PM2.5-induced cytotoxicity especially the contribution of bioaerosol part is still undiscovered. Herein, an ALI microfluidics system integrated multi-omics (iTRAQ & RNA-seq) was successfully utilized to recognize the molecular mechanisms induced by microorganisms carried bioaerosol in human lung epithelial cells. The cells viability was above 98% within 21 days on this system. Moreover, the results showed that eight microorganisms-related pathways (e.g., Salmonella, amoebiasis, HTLV-1) were activated after exposure to PM2.5 for 24 h, which played a certain proportion in contributing to inflammation reaction. In addition, multi-omics demonstrated that three inflammation-related signal transduction cascades including MAPK signaling pathway, TNF signaling pathway, and TGF signaling pathway were triggered by fine particles, ultimately leading to apoptosis-related process disorder by associated cytokines like TNF, IL6, and TGF-β. Furthermore, flow cytometry analysis showed that the cell apoptosis rate increased from 3.8% to 66.7% between the cells exposed to PM2.5 (10 μg/cm2) for 24 h and untreated control cells, which indicated that the fine particles had the ability to activate apoptosis-related signal cascades and result in apoptosis. ELISA assay and western blot indicated that HO-1, JNK, IL6, TNF, NF-κB, and FGF14 were significantly increased after exposure to PM2.5 while Casp3 and FGFR were decreased, which were consistent with the multi-omics. Moreover, PM2.5 components (OC, EC, 16PAHs, As, Cu, Mn, Cl-, and NO3-) were significantly correlated to the inflammation related proteins and cytokines, which played a vital role in the inflammation and apoptosis related signaling pathways. These findings pointed to strong links among microorganisms infection, inflammation, and apoptosis in cell response to PM2.5 carried microorganisms. It also provided a new approach for understanding PM2.5-induced cytotoxicity and health risks.
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Affiliation(s)
- Heng Dong
- Shanghai Key laboratory of Atmospheric Particle Pollution Prevention (LAP3), Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, PR China
| | - Lulu Zheng
- Shanghai Key laboratory of Atmospheric Particle Pollution Prevention (LAP3), Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, PR China; Engineering Research Center of Optical Instrument and System, Ministry of Education, Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, PR China
| | - Xiaoxiao Duan
- Shanghai Key laboratory of Atmospheric Particle Pollution Prevention (LAP3), Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, PR China
| | - Wang Zhao
- Shanghai Key laboratory of Atmospheric Particle Pollution Prevention (LAP3), Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, PR China
| | - Jianmin Chen
- Shanghai Key laboratory of Atmospheric Particle Pollution Prevention (LAP3), Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, PR China
| | - Sixiu Liu
- Shanghai Key laboratory of Atmospheric Particle Pollution Prevention (LAP3), Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, PR China.
| | - Guodong Sui
- Shanghai Key laboratory of Atmospheric Particle Pollution Prevention (LAP3), Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, PR China.
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Human Lung Microbiome on the Way to Cancer. J Immunol Res 2019; 2019:1394191. [PMID: 31485458 PMCID: PMC6710786 DOI: 10.1155/2019/1394191] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/21/2019] [Accepted: 06/17/2019] [Indexed: 12/13/2022] Open
Abstract
Recent research on cancer-associated microbial communities led to the accumulation of data on the interplay between bacteria, immune and tumor cells, the pathways of bacterial induction of carcinogenesis, and its meaningfulness for medicine. Microbial communities that have any kind of impact on tumor progression and microorganisms associated with tumors have been defined as oncobiome. Over the last decades, a number of studies were dedicated to Helicobacter pylori and its role in the progression of stomach tumors, so this correlation can be regarded as proven. Involvement of bacteria in the induction of lung cancer has been largely ignored for a long time, though some correlations between this type of cancer and lung microbiome were established. Despite the fact that in the present the microbial impact on lung cancer progression has many confirmations, the underlying mechanisms are poorly understood. Microorganisms can contribute to tumor initiation and progression through production of bacteriotoxins and other proinflammatory factors. The purpose of this review is to organize the available data on lung cancer microbiome and its role in malignant tumor progression.
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122
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Shanmugam N, Baker MODG, Ball SR, Steain M, Pham CLL, Sunde M. Microbial functional amyloids serve diverse purposes for structure, adhesion and defence. Biophys Rev 2019; 11:287-302. [PMID: 31049855 PMCID: PMC6557962 DOI: 10.1007/s12551-019-00526-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 04/15/2019] [Indexed: 12/22/2022] Open
Abstract
The functional amyloid state of proteins has in recent years garnered much attention for its role in serving crucial and diverse biological roles. Amyloid is a protein fold characterised by fibrillar morphology, binding of the amyloid-specific dyes Thioflavin T and Congo Red, insolubility and underlying cross-β structure. Amyloids were initially characterised as an aberrant protein fold associated with mammalian disease. However, in the last two decades, functional amyloids have been described in almost all biological systems, from viruses, to bacteria and archaea, to humans. Understanding the structure and role of these amyloids elucidates novel and potentially ancient mechanisms of protein function throughout nature. Many of these microbial functional amyloids are utilised by pathogens for invasion and maintenance of infection. As such, they offer novel avenues for therapies. This review examines the structure and mechanism of known microbial functional amyloids, with a particular focus on the pathogenicity conferred by the production of these structures and the strategies utilised by microbes to interfere with host amyloid structures. The biological importance of microbial amyloid assemblies is highlighted by their ubiquity and diverse functionality.
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Affiliation(s)
- Nirukshan Shanmugam
- Discipline of Pharmacology, School of Medical Sciences, Faculty of Medicine and Health and Sydney Nano, University of Sydney, Sydney, NSW, 2006, Australia
| | - Max O D G Baker
- Discipline of Pharmacology, School of Medical Sciences, Faculty of Medicine and Health and Sydney Nano, University of Sydney, Sydney, NSW, 2006, Australia
| | - Sarah R Ball
- Discipline of Pharmacology, School of Medical Sciences, Faculty of Medicine and Health and Sydney Nano, University of Sydney, Sydney, NSW, 2006, Australia
| | - Megan Steain
- Infectious Diseases and Immunology, Central Clinical School, Sydney Medical School, University of Sydney, Sydney, NSW, 2006, Australia
| | - Chi L L Pham
- Discipline of Pharmacology, School of Medical Sciences, Faculty of Medicine and Health and Sydney Nano, University of Sydney, Sydney, NSW, 2006, Australia
| | - Margaret Sunde
- Discipline of Pharmacology, School of Medical Sciences, Faculty of Medicine and Health and Sydney Nano, University of Sydney, Sydney, NSW, 2006, Australia.
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123
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Khan R, Petersen FC, Shekhar S. Commensal Bacteria: An Emerging Player in Defense Against Respiratory Pathogens. Front Immunol 2019; 10:1203. [PMID: 31214175 PMCID: PMC6554327 DOI: 10.3389/fimmu.2019.01203] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 05/13/2019] [Indexed: 12/31/2022] Open
Abstract
A diverse community of trillions of commensal bacteria inhabits mucosal and epidermal surfaces in humans and plays an important role in defense against pathogens, including respiratory pathogens. Commensal bacteria act on the host's immune system to induce protective responses that prevent colonization and invasion by pathogens. On the other hand, these bacteria can directly inhibit the growth of respiratory pathogens by producing antimicrobial products/signals and competing for nutrients and adhesion sites. Such mechanisms preserve the niche for commensal bacteria and support the host in containing respiratory infections. Herein, we discuss current evidence on the role of commensal bacteria in conferring protection against respiratory pathogens and the underlying mechanisms by which these bacteria do so. A deeper knowledge of how commensal bacteria interact with the host and pathogens might provide new insights that are poised to aid in the development of vaccines and therapeutics that target infectious diseases.
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Affiliation(s)
- Rabia Khan
- Faculty of Dentistry, Institute of Oral Biology, University of Oslo, Oslo, Norway
| | | | - Sudhanshu Shekhar
- Faculty of Dentistry, Institute of Oral Biology, University of Oslo, Oslo, Norway
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Stedman A, Chambers MA, Gutierrez-Merino J. Secretion and functional expression of Mycobacterium bovis antigens MPB70 and MPB83 in lactic acid bacteria. Tuberculosis (Edinb) 2019; 117:24-30. [PMID: 31378264 DOI: 10.1016/j.tube.2019.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 05/21/2019] [Accepted: 05/28/2019] [Indexed: 01/23/2023]
Abstract
The aim of this study was to determine the reliability of lactic acid bacteria (LAB) as heterologous hosts for the expression of MPB70 and MPB83, two Mycobacterium bovis antigens that possess diagnostics and immunogenic properties, respectively. We therefore generated recombinant cells of Lactococcus lactis and Lactobacillus plantarum that carried hybrid genes encoding MPB70 and MPB83 fused to signal peptides that are specifically recognized by LAB. Only L. lactis was able to secrete MPB70 using the L. lactis signal peptide Usp45, and to produce MPB83 as an immunogenic membrane protein following its expression with the signal peptide of the L. plantarum lipoprotein prsA. Inactivated cells of MPB83-expressing L. lactis cultures enhanced NF-κB activation in macrophages. Our results show that L. lactis is a reliable host for the secretion and functional expression of antigens that are naturally produced by M. bovis, the causative agent of bovine tuberculosis (bTB). This represents the first step on a long process to establishing whether recombinant LAB could serve as a food-grade platform for potential diagnostic tools and/or vaccine interventions for use against bTB, a chronic disease that primarily affects cattle but also humans and a wide range of domestic and wild animals.
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Affiliation(s)
- Anna Stedman
- School of Biosciences and Medicine, University of Surrey, Guildford, GU2 7XH, UK; The Pirbright Institute, Ash Road, Woking, Surrey, GU24 0NF, UK.
| | - Mark A Chambers
- Department of Bacteriology, Animal and Plant Health Agency, Addlestone, KT15 3NB, UK; School of Veterinary Medicine, University of Surrey, Guildford, GU2 7AL, UK.
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Aro AO, Dzoyem JP, Awouafack MD, Selepe MA, Eloff JN, McGaw LJ. Fractions and isolated compounds from Oxyanthus speciosus subsp. stenocarpus (Rubiaceae) have promising antimycobacterial and intracellular activity. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:108. [PMID: 31117999 PMCID: PMC6532187 DOI: 10.1186/s12906-019-2520-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 05/09/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Tuberculosis is a deadly disease caused by Mycobacterium species. The use of medicinal plants is an ancient global practice for the treatment and prevention of diverse ailments including tuberculosis. The aim of this study was to isolate and characterize antimycobacterial compounds by bioassay-guided fractionation of the acetone leaf extract of Oxyanthus speciosus. METHODS A two-fold serial microdilution method was used to determine the minimum inhibitory concentration (MIC) against mycobacteria. Cytotoxicity and nitric oxide inhibitory activity of the isolated compounds was determined to evaluate in vitro safety and potential anti-inflammatory activity. Intracellular efficacy of the crude extract against Mycobacterium-infected macrophages was also determined. RESULTS Two compounds were isolated and identified as lutein (1) and rotundic acid (2). These had good antimycobacterial activity against the four mycobacteria tested with MIC values ranging from 0.013 to 0.1 mg/mL. Rotundic acid had some cytotoxicity against C3A human liver cells. Lutein was not cytotoxic at the highest tested concentration (200 μg/mL) and inhibited nitric oxide production in RAW 264.7 macrophages by 94% at a concentration of 25 μg/mL. The acetone crude extract (120 μg/mL) of O. speciosus had intracellular antimycobacterial activity, reducing colony forming units by more than 90%, displaying bactericidal efficacy in a dose and time-dependent manner. CONCLUSION This study provides good proof of the presence of synergism between different compounds in extracts and fractions. It is also the first report of the antimycobacterial activity of lutein and rotundic acid isolated from Oxyanthus speciosus. The promising activity of the crude extract of O. speciosus both in vitro and intracellularly in an in vitro macrophage model suggests its potential for development as an anti- tuberculosis (TB) herbal medicine.
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Affiliation(s)
- Abimbola O. Aro
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110 South Africa
| | - Jean P. Dzoyem
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110 South Africa
- Department of Biochemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Maurice D. Awouafack
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110 South Africa
- Laboratory of Natural Products Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, P.OBox 67, Dschang, Cameroon
| | | | - Jacobus N. Eloff
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110 South Africa
| | - Lyndy J. McGaw
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110 South Africa
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126
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Tuberculosis, the unsung infectious disease. Tuberculosis (Edinb) 2019; 115:24-25. [DOI: 10.1016/j.tube.2019.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 01/23/2019] [Indexed: 11/22/2022]
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127
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Liu P, Guo B, Wang S, Ding J, Zhou W. A thermo-responsive and self-healing liposome-in-hydrogel system as an antitubercular drug carrier for localized bone tuberculosis therapy. Int J Pharm 2019; 558:101-109. [DOI: 10.1016/j.ijpharm.2018.12.083] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/21/2018] [Accepted: 12/26/2018] [Indexed: 12/16/2022]
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128
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Costa-Veiga A, Briz T, Nunes C. Unsuccessful treatment in pulmonary tuberculosis: factors and a consequent predictive model. Eur J Public Health 2019; 28:352-358. [PMID: 29036618 DOI: 10.1093/eurpub/ckx136] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background Cure is particularly valuable in pulmonary cases (PTB), as unsuccessful treatment fuels incidence and resistance to antibiotics. This study aims to identify individual factors of PTB unsuccessful treatment in Portugal and to develop a consequent predictive model. Methods Using the Portuguese TB surveillance database (SVIG-TB), PTB cases older than 15 years notified from 2000 to 2012 in Continental Portugal were analyzed. Unsuccessful treatment included the WHO categories (failure, default, death and transferred out). Based on a literature review, predictors involved sociodemographic, behavioral, disease-related and treatment-related factors. Binary logistic regression was used to estimate unsuccessful treatment factors and to develop the predictive risk model. Results The unsuccessful outcome rate in PTB patients was of 11.9%. The predictive model included the following factors: TB/HIV co-infection (OR 4.93), age over 64 years (OR 4.37), IV drugs abuse (OR 2.29), other diseases (excluding HIV and Diabetes, OR 2.09) and retreatment (OR 1.44), displaying a rather good validity. Conclusion The overall treatment unsuccessful treatment rate in PTB patients complies with the 85% WHO success threshold. The predictive model of unsuccessful treatment proved well. Nomogram representation allows an early, intuitive identification of PTB patients at increased risk. The model is liable to widespread use as a prognostic tool.
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Affiliation(s)
- Ana Costa-Veiga
- Escola Nacional de Saúde Pública, Universidade NOVA de Lisboa, Lisboa, Portugal.,Instituto Politécnico de Lisboa, Escola Superior de Tecnologia da Saúde de Lisboa, Lisboa, Portugal
| | - Teodoro Briz
- Escola Nacional de Saúde Pública, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Carla Nunes
- Escola Nacional de Saúde Pública, Universidade NOVA de Lisboa, Lisboa, Portugal.,Centro de Investigação em Saúde Pública, Universidade NOVA de Lisboa, Lisboa, Portugal
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129
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Poeta P, Silva V, Guedes A, Eduardo Pereira J, Cláudia Coelho A, Igrejas G. Tuberculosis in the 21th century: Current status of diagnostic methods. Exp Lung Res 2019; 44:352-360. [PMID: 30663432 DOI: 10.1080/01902148.2018.1545880] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Tuberculosis is an infectious bacterial disease with a high mortality rate worldwide constituting a serious public health problem. The diagnostic methods commonly used by health professionals are slow and expensive and the results may take about sixty days which will cause a delay in administrating the most proper treatment to the patient, as well as increase health care costs and infection transmission possibility. Patients infected simultaneously with human immunodeficiency virus and Mycobacterium tuberculosis are a constant and worrying challenge for the scientific community which will research and develop new methods of diagnosis, new drugs and new therapies. Nowadays there are new tuberculosis diagnosis methods and some of which are already in clinical trial phases. These methods have high sensitivity, but do not replace the microbiological examination for isolation and culture of Mycobacterium spp. However, in clinical practice, microbiological, imaging, clinical and epidemiological data integration provide the best diagnosis and treatment possible. Consequently, throughout this paper, the different methods of diagnosis of human tuberculosis with its advantages and disadvantages will be covered, describing new omics and ultra-fast methods to increase knowledge and obtain a rapid diagnosis of tuberculosis.
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Affiliation(s)
- Patrícia Poeta
- a Department of Veterinary Sciences , University of Trás-os-Montes and Alto Douro (UTAD) , Vila Real , Portugal.,b Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro , Vila Real , Portugal
| | - Vanessa Silva
- a Department of Veterinary Sciences , University of Trás-os-Montes and Alto Douro (UTAD) , Vila Real , Portugal.,b Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro , Vila Real , Portugal.,c Functional Genomics and Proteomics Unit , University of Tras-os-Montes and Alto Douro (UTAD) , Vila Real , Portugal.,d Associated Laboratory for Green Chemistry (LAQV-REQUIMTE) , University NOVA of Lisboa , Lisboa , Caparica, Portugal
| | - Andreia Guedes
- a Department of Veterinary Sciences , University of Trás-os-Montes and Alto Douro (UTAD) , Vila Real , Portugal
| | - José Eduardo Pereira
- a Department of Veterinary Sciences , University of Trás-os-Montes and Alto Douro (UTAD) , Vila Real , Portugal.,e CECAV, Centro de Ciência Animal e Veterinária , Universidade de Trás-os-Montes e Alto Douro , Vila Real , Portugal
| | - Ana Cláudia Coelho
- a Department of Veterinary Sciences , University of Trás-os-Montes and Alto Douro (UTAD) , Vila Real , Portugal.,e CECAV, Centro de Ciência Animal e Veterinária , Universidade de Trás-os-Montes e Alto Douro , Vila Real , Portugal
| | - Gilberto Igrejas
- b Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro , Vila Real , Portugal.,c Functional Genomics and Proteomics Unit , University of Tras-os-Montes and Alto Douro (UTAD) , Vila Real , Portugal.,d Associated Laboratory for Green Chemistry (LAQV-REQUIMTE) , University NOVA of Lisboa , Lisboa , Caparica, Portugal
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130
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Beteck RM, Seldon R, Jordaan A, Warner DF, Hoppe HC, Laming D, Legoabe LJ, Khanye SD. Quinolone-isoniazid hybrids: synthesis and preliminary in vitro cytotoxicity and anti-tuberculosis evaluation. MEDCHEMCOMM 2019; 10:326-331. [PMID: 30881619 DOI: 10.1039/c8md00480c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 12/17/2018] [Indexed: 12/14/2022]
Abstract
Herein, we propose novel quinolones incorporating an INH moiety as potential drug templates against TB. The quinolone-based compounds bearing an INH moiety attached via a hydrazide-hydrazone bond were synthesised and evaluated against Mycobacterium tuberculosis H37Rv (MTB). The compounds were also evaluated for cytotoxicity against HeLa cell lines. These compounds showed significant activity (MIC90) against MTB in the range of 0.2-8 μM without any cytotoxic effects. Compounds 10 (MIC90; 0.9 μM), 11 (MIC90; 0.2 μM), 12 (MIC90; 0.8 μM) and compound 15 (MIC90; 0.8 μM), the most active compounds in this series, demonstrate activities on par with INH and superior to those reported for the fluoroquinolones. The SAR analysis suggests that the nature of substituents at positions -1 and -3 of the quinolone nucleus influences anti-MTB activity. Aqueous solubility evaluation and in vitro metabolic stability of compound 12 highlights favourable drug-like properties for this compound class.
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Affiliation(s)
- Richard M Beteck
- Faculty of Science , Department of Chemistry , Rhodes University , Grahamstown 6140 , South Africa .
| | - Ronnett Seldon
- Drug Discovery and Development Centre (H3-D) , Department of Chemistry , University of Cape Town , Rondebosch 7701 , South Africa
| | - Audrey Jordaan
- SAMRC/NHLS/UCT Molecular Mycobacteriology Research Unit , Department of Pathology , University of Cape Town , Observatory , 7925 , South Africa
| | - Digby F Warner
- SAMRC/NHLS/UCT Molecular Mycobacteriology Research Unit , Department of Pathology , University of Cape Town , Observatory , 7925 , South Africa.,Institute of Infectious Diseases and Molecular Medicine , University of Cape Town , Observatory , 7952 , South Africa.,Wellcome Centre for Clinical Infectious Diseases Research in Africa , University of Cape Town , Observatory , 7925 , South Africa
| | - Heinrich C Hoppe
- Faculty of Science , Department of Biochemistry and Microbiology , Rhodes University , Grahamstown 6140 , South Africa.,Centre for Chemico- and Biomedicinal Research , Rhodes University , Grahamstown 6140 , South Africa
| | - Dustin Laming
- Centre for Chemico- and Biomedicinal Research , Rhodes University , Grahamstown 6140 , South Africa
| | - Lesetja J Legoabe
- Centre of Excellence for Pharmaceutical Science , North-West University , Potchefstroom 2520 , South Africa
| | - Setshaba D Khanye
- Faculty of Science , Department of Chemistry , Rhodes University , Grahamstown 6140 , South Africa . .,Centre for Chemico- and Biomedicinal Research , Rhodes University , Grahamstown 6140 , South Africa.,Faculty of Pharmacy , Rhodes University , Grahamstown 6140 , South Africa
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131
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Rode HB, Lade DM, Grée R, Mainkar PS, Chandrasekhar S. Strategies towards the synthesis of anti-tuberculosis drugs. Org Biomol Chem 2019; 17:5428-5459. [DOI: 10.1039/c9ob00817a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this report, we reviewed the strategies towards the synthesis of anti-tuberculosis drugs. They include semisynthetic approaches, resolution based strategies, microbial transformations, solid phase synthesis, and asymmetric synthesis.
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Affiliation(s)
- Haridas B. Rode
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Dhanaji M. Lade
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - René Grée
- University of Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes)
- UMR 6226
- F-35000 Rennes
| | - Prathama S. Mainkar
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
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132
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Park M, Son A, Chua B. Microorganism-ionizing respirator with reduced breathing resistance suitable for removing airborne bacteria. SENSORS AND ACTUATORS. B, CHEMICAL 2018; 276:437-446. [PMID: 32288253 PMCID: PMC7111273 DOI: 10.1016/j.snb.2018.08.133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 08/10/2018] [Accepted: 08/26/2018] [Indexed: 06/11/2023]
Abstract
In this paper, we have demonstrated the feasibility of using microorganism-ionizing respirators with reduced breathing resistance to remove airborne bacteria. Using a miniaturized corona ionizer and two pairs of separator electrodes, airborne bacteria were ionized and removed from the airflow. Two microorganism-ionizing respirator designs were experimentally evaluated with flow rates ranging from ∼10 to 20 L/min and yielded airborne bacterial removal efficiencies of ∼75%-100%. Further, they were in close agreement with the analytical airborne particle removal efficiencies, at a similar range of flow rates. These flow rates also correspond to the breathing rates of standing and walking adults. More importantly, the breathing resistance could be reduced by more than 50% for flow rates of ∼200 L/min. Using manganese (IV) oxide coated mesh, the ozone concentration in the air outflow was reduced to less than 0.1 ppm, at a flow rate of ∼20 L/min, thus enabling safe use. The power consumption was less than 1 W.
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Affiliation(s)
- Miri Park
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Ahjeong Son
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Beelee Chua
- School of Electrical Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
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133
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Kimura R, Shibata M, Koeda S, Miyagawa A, Yamamura H, Mizuno T. Development of New Antimicrobial Agents from Cationic PG-Surfactants Containing Oligo-Lys Peptides. Bioconjug Chem 2018; 29:4072-4082. [DOI: 10.1021/acs.bioconjchem.8b00693] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ryosuke Kimura
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Masahide Shibata
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Shuhei Koeda
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Atsushi Miyagawa
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Hatsuo Yamamura
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Toshihisa Mizuno
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya, Aichi 466-8555, Japan
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134
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Fowler PW, Gibertoni Cruz AL, Hoosdally SJ, Jarrett L, Borroni E, Chiacchiaretta M, Rathod P, Lehmann S, Molodtsov N, Walker TM, Robinson E, Hoffmann H, Peto TEA, Cirillo DM, Smith GE, Crook DW. Automated detection of bacterial growth on 96-well plates for high-throughput drug susceptibility testing of Mycobacterium tuberculosis. MICROBIOLOGY-SGM 2018; 164:1522-1530. [PMID: 30351270 DOI: 10.1099/mic.0.000733] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
M. tuberculosis grows slowly and is challenging to work with experimentally compared with many other bacteria. Although microtitre plates have the potential to enable high-throughput phenotypic testing of M. tuberculosis, they can be difficult to read and interpret. Here we present a software package, the Automated Mycobacterial Growth Detection Algorithm (AMyGDA), that measures how much M. tuberculosis is growing in each well of a 96-well microtitre plate. The plate used here has serial dilutions of 14 anti-tuberculosis drugs, thereby permitting the MICs to be elucidated. The three participating laboratories each inoculated 38 96-well plates with 15 known M. tuberculosis strains (including the standard H37Rv reference strain) and, after 2 weeks' incubation, measured the MICs for all 14 drugs on each plate and took a photograph. By analysing the images, we demonstrate that AMyGDA is reproducible, and that the MICs measured are comparable to those measured by a laboratory scientist. The AMyGDA software will be used by the Comprehensive Resistance Prediction for Tuberculosis: an International Consortium (CRyPTIC) to measure the drug susceptibility profile of a large number (>30000) of samples of M. tuberculosis from patients over the next few years.
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Affiliation(s)
- Philip W Fowler
- 2National Institute for Health Research (NIHR) Oxford Biomedical Research Centre, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK.,1Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Headley Way, Oxford, OX3 9DU, UK
| | - Ana Luíza Gibertoni Cruz
- 1Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Headley Way, Oxford, OX3 9DU, UK
| | - Sarah J Hoosdally
- 1Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Headley Way, Oxford, OX3 9DU, UK
| | - Lisa Jarrett
- 3National Mycobacterial Reference Service, National Infection Service, Public Health Laboratory Birmingham, Heartlands Hospital, Bordesley Green, Birmingham, B9 5SS, UK
| | - Emanuele Borroni
- 4Emerging Bacterial Pathogens Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Matteo Chiacchiaretta
- 4Emerging Bacterial Pathogens Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Priti Rathod
- 3National Mycobacterial Reference Service, National Infection Service, Public Health Laboratory Birmingham, Heartlands Hospital, Bordesley Green, Birmingham, B9 5SS, UK
| | - Sarah Lehmann
- 5SYNLAB Gauting and Institute of Microbiology and Laboratory Medicine, World Health OrganizationSupranational Reference Laboratory of Tuberculosis, Munich-Gauting, Germany
| | - Nikolay Molodtsov
- 5SYNLAB Gauting and Institute of Microbiology and Laboratory Medicine, World Health OrganizationSupranational Reference Laboratory of Tuberculosis, Munich-Gauting, Germany
| | - Timothy M Walker
- 1Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Headley Way, Oxford, OX3 9DU, UK.,2National Institute for Health Research (NIHR) Oxford Biomedical Research Centre, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK
| | - Esther Robinson
- 3National Mycobacterial Reference Service, National Infection Service, Public Health Laboratory Birmingham, Heartlands Hospital, Bordesley Green, Birmingham, B9 5SS, UK
| | - Harald Hoffmann
- 5SYNLAB Gauting and Institute of Microbiology and Laboratory Medicine, World Health OrganizationSupranational Reference Laboratory of Tuberculosis, Munich-Gauting, Germany
| | - Timothy E A Peto
- 1Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Headley Way, Oxford, OX3 9DU, UK.,6NIHR Health Protection Research Unit in Healthcare Associated Infection, Antimicrobial Resistance at University of Oxford in partnership with Public Health England, Oxford, UK
| | - Daniela Maria Cirillo
- 4Emerging Bacterial Pathogens Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Grace E Smith
- 3National Mycobacterial Reference Service, National Infection Service, Public Health Laboratory Birmingham, Heartlands Hospital, Bordesley Green, Birmingham, B9 5SS, UK
| | - Derrick W Crook
- 1Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Headley Way, Oxford, OX3 9DU, UK.,6NIHR Health Protection Research Unit in Healthcare Associated Infection, Antimicrobial Resistance at University of Oxford in partnership with Public Health England, Oxford, UK
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135
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Zhou X, Jiang P, Huan X, Li W, Chen Y, Gao H, Qi X, Wu J, Wang X, Ou Y, Jia X. Ultrasound-Guided versus Thoracoscopic Pleural Biopsy for Diagnosing Tuberculous Pleurisy Following Inconclusive Thoracentesis: A Randomized, Controlled Trial. Med Sci Monit 2018; 24:7238-7248. [PMID: 30303950 PMCID: PMC6192452 DOI: 10.12659/msm.912506] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Traditional diagnostic methods for tuberculosis (TB) cannot be reliably applied to tuberculous pleurisy. Therefore, this prospective, randomized, controlled trial was performed to compare the diagnostic sensitivity and safety of ultrasound-guided cutting-needle pleural biopsy versus thoracoscopic pleural biopsy in patients suspected of tuberculous pleurisy following inconclusive thoracentesis. MATERIAL AND METHODS A total of 196 adult patients with acid-fast bacillus (AFB)-negative exudative pleural effusions clinically suspected of tuberculous pleurisy were recruited. Enrollees were randomized into 2 cohorts: ultrasound-guided cutting-needle pleural biopsy (n=96) or thoracoscopic pleural biopsy (n=96). The overall diagnostic yields, diagnostic sensitivities for tuberculous pleurisy, and post-procedural complications for both cohorts were statistically compared. RESULTS Ultrasound-guided pleural biopsy displayed an overall diagnostic yield of 83%, while thorascopic pleural biopsy displayed a similar overall diagnostic yield of 86% (χ²=1.88, df=1, p=0.17). There were 127 patients conclusively diagnosed with tuberculous pleurisy, resulting in a tuberculous pleurisy prevalence of 65% in this patient population (66% in the ultrasound cohort vs. 63% in the thoracoscopy cohort; p>0.05). Ultrasound-guided pleural biopsy displayed a sensitivity of 82% in detecting tuberculous pleurisy, while thorascopic pleural biopsy displayed a similar sensitivity of 90% (χ²=1.05, df=1, p=0.30). The sensitivities of these 2 modalities did not significantly differ based on the degree of pleural thickening (p>0.05). Post-procedural complications were minor. CONCLUSIONS Ultrasound-guided and thoracoscopic pleural biopsy both display strong (>80%) but statistically similar overall diagnostic yields for diagnosing pleural effusions following inconclusive thoracentesis. Both modalities also display strong (>80%) but statistically similar sensitivities in detecting tuberculous pleurisy.
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Affiliation(s)
- Xiaoyu Zhou
- Department of Respiratory Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Peng Jiang
- Department of Respiratory Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland).,Department of Respiratory Medicine, The People's Hospital of Huainan, Huainan, Anhui, China (mainland)
| | - Xia Huan
- Department of Respiratory Disease, The People's Hospital of Shannan, Tibet, Shannan, China (mainland)
| | - Wei Li
- Department of Respiratory Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Yuqing Chen
- Department of Respiratory Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Hua Gao
- Department of Respiratory Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Xueyuan Qi
- Department of Respiratory Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Jing Wu
- Department of Respiratory Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Xiaojing Wang
- Department of Respiratory Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Yurong Ou
- Department of Pathology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland)
| | - Xianjie Jia
- Department of Epidemiology, Bengbu Medical College, Bengbu, Anhui, China (mainland)
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136
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Mur LA, Huws SA, Cameron SJ, Lewis PD, Lewis KE. Lung cancer: a new frontier for microbiome research and clinical translation. Ecancermedicalscience 2018; 12:866. [PMID: 30263057 PMCID: PMC6145518 DOI: 10.3332/ecancer.2018.866] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Indexed: 12/11/2022] Open
Abstract
The lung microbiome has been shown to reflect a range of pulmonary diseases—for example: asthma, chronic obstructive pulmonary disease (COPD) and cystic fibrosis. Studies have now begun to show microbiological changes in the lung that correlate with lung cancer (LC) which could provide new insights into lung carcinogenesis and new biomarkers for disease screening. Clinical studies have suggested that infections with tuberculosis or pneumonia increased the risk of LC possibly through inflammatory or immunological changes. These have now been superseded by genomic-based microbiome sequencing studies based on bronchoalveolar lavage, sputum or saliva samples. Although some discrepancies exist, many have suggested changes in particular bacterial genera in LC samples particularly, Granulicatella, Streptococcus and Veillonella. Granulicatella is of particular interest, as it appeared to show LC stage-specific increases in abundance. We propose that these microbial community changes are likely to reflect biochemical changes in the LC lung, linked to an increase in anaerobic environmental niches and altered pyridoxal/polyamine/nitrogenous metabolism to which Granulicatella could be particularly responsive. These are clearly preliminary observations and many more expansive studies are required to develop our understanding of the LC microbiome.
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Affiliation(s)
- Luis Aj Mur
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Penglais Campus, Aberystwyth SY23 2DA, UK
| | - Sharon A Huws
- Institute for Global Food Security, School of Biological Sciences, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Simon Js Cameron
- Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London, Charing Cross Hospital Campus, London W6 8RD, UK
| | - Paul D Lewis
- College of Medicine, Swansea University, Swansea SA2 8PP, UK
| | - Keir E Lewis
- Respiratory Unit, Prince Philip Hospital, Llanelli SA14 8QF, UK.,School of Medicine, University of Wales Swansea, Swansea SA2 8PP, UK
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137
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Cui H, Bo B, Ma J, Tang Y, Zhao J, Xiao H. A target-responsive liposome activated by catalytic hairpin assembly enables highly sensitive detection of tuberculosis-related cytokine. Chem Commun (Camb) 2018; 54:4870-4873. [PMID: 29697111 DOI: 10.1039/c8cc01542b] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Here, we propose a new fluorescence method to detect tuberculosis-related cytokine by using a target-responsive liposome activated by catalytic hairpin assembly. The method combines a DNA self-assembly based amplification process with a liposome-based signal amplification process, therefore offering a very high sensitivity.
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Affiliation(s)
- Haiyan Cui
- Clinic and Research Center of Tuberculosis, Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China.
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138
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Nik Zuraina NMN, Sarimah A, Suharni M, Hasan H, Suraiya S. High frequency of Haemophilus influenzae associated with respiratory tract infections among Malaysian Hajj pilgrims. J Infect Public Health 2018; 11:878-883. [PMID: 30097415 DOI: 10.1016/j.jiph.2018.07.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/22/2018] [Accepted: 07/29/2018] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Overcrowding during the annual Hajj pilgrimage has been known to increase the risk of infectious diseases transmission. Despite the high prevalence of respiratory illness among Malaysian Hajj pilgrims, knowledge about the etiologic pathogens is yet very limited. Thus, this study aimed to determine the spectrum of bacterial respiratory pathogens among the Hajj pilgrims returning to Malaysia in year 2016. METHODS Expectorated sputum specimens were collected from the Hajj pilgrims with symptomatic respiratory tract infections (RTIs). Subsequently, the bacterial pathogens were identified using the standard bacteriological culture method and Vitek II system. RESULTS This study indicated that 255 (87.33%) out of 292 cultured sputa were positive with at least one potential pathogenic bacteria. Out of 345 total bacterial isolates, 60% (n=207) were Haemophilus influenzae, which was associated with both single bacterium infection (132/173, 76.3%) and multiple bacterial infections (75/82, 91.5%). The other bacterial isolates included; Klebsiella pneumoniae (n=37, 10.7%), Moraxella catarrhalis (n=27, 7.8%), Haemophilus parainfluenzae (n=25, 7.2%), Streptococcus group G (n=18, 5.2%), Klebsiella spesies (n=16, 4.6%), Streptococcus pneumoniae (n=11, 3.2%) and few other organisms. CONCLUSION High frequency of H. influenzae was isolated from Malaysian Hajj pilgrims, especially those with respiratory symptoms. Further study should evaluate the actual pathogenicity of the organism and the interactions between the respiratory microbiota towards developing effective prevention strategies of RTIs among the local pilgrims.
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Affiliation(s)
- Nik M N Nik Zuraina
- Department of Medical Microbiology and Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Abdullah Sarimah
- Biostatistics and Research Methodology Unit, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Mohamad Suharni
- School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Habsah Hasan
- Department of Medical Microbiology and Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Siti Suraiya
- Department of Medical Microbiology and Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
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139
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Castro PP, Campos DL, Pavan FR, Amarante GW. Dual‐protected amino acid derivatives as new antitubercular agents. Chem Biol Drug Des 2018; 92:1576-1580. [DOI: 10.1111/cbdd.13315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/02/2018] [Accepted: 04/06/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Pedro P. Castro
- Department of ChemistryFederal University of Juiz de Fora Minas Gerais Brazil
| | - Débora L. Campos
- Department of Biological SciencesSchool of Pharmaceutical ScienceSão Paulo State University Araraquara São Paulo Brazil
| | - Fernando R. Pavan
- Department of Biological SciencesSchool of Pharmaceutical ScienceSão Paulo State University Araraquara São Paulo Brazil
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140
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Hayward S, Harding RM, McShane H, Tanner R. Factors influencing the higher incidence of tuberculosis among migrants and ethnic minorities in the UK. F1000Res 2018; 7:461. [PMID: 30210785 PMCID: PMC6107974 DOI: 10.12688/f1000research.14476.2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/09/2018] [Indexed: 12/17/2022] Open
Abstract
Migrants and ethnic minorities in the UK have higher rates of tuberculosis (TB) compared with the general population. Historically, much of the disparity in incidence between UK-born and migrant populations has been attributed to differential pathogen exposure, due to migration from high-incidence regions and the transnational connections maintained with TB endemic countries of birth or ethnic origin. However, focusing solely on exposure fails to address the relatively high rates of progression to active disease observed in some populations of latently infected individuals. A range of factors that disproportionately affect migrants and ethnic minorities, including genetic susceptibility, vitamin D deficiency and co-morbidities such as diabetes mellitus and HIV, also increase vulnerability to infection with
Mycobacterium tuberculosis (M.tb) or reactivation of latent infection. Furthermore, ethnic socio-economic disparities and the experience of migration itself may contribute to differences in TB incidence, as well as cultural and structural barriers to accessing healthcare. In this review, we discuss both biological and anthropological influences relating to risk of pathogen exposure, vulnerability to infection or development of active disease, and access to treatment for migrant and ethnic minorities in the UK.
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Affiliation(s)
- Sally Hayward
- St John's College, University of Oxford, Oxford, OX1 3JP, UK
| | | | - Helen McShane
- The Jenner Institute, University of Oxford, Oxford, OX1 3PS, UK
| | - Rachel Tanner
- The Jenner Institute, University of Oxford, Oxford, OX1 3PS, UK
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141
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Hayward S, Harding RM, McShane H, Tanner R. Factors influencing the higher incidence of tuberculosis among migrants and ethnic minorities in the UK. F1000Res 2018; 7:461. [PMID: 30210785 PMCID: PMC6107974 DOI: 10.12688/f1000research.14476.1] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/09/2018] [Indexed: 09/04/2023] Open
Abstract
Migrants and ethnic minorities in the UK have higher rates of tuberculosis (TB) compared with the general population. Historically, much of the disparity in incidence between UK-born and migrant populations has been attributed to differential pathogen exposure, due to migration from high-incidence regions and the transnational connections maintained with TB endemic countries of birth or ethnic origin. However, focusing solely on exposure fails to address the relatively high rates of progression to active disease observed in some populations of latently infected individuals. A range of factors that disproportionately affect migrants and ethnic minorities, including genetic susceptibility, vitamin D deficiency and co-morbidities such as diabetes mellitus and HIV, also increase vulnerability to infection with Mycobacterium tuberculosis (M.tb) or reactivation of latent infection. Furthermore, ethnic socio-economic disparities and the experience of migration itself may contribute to differences in TB incidence, as well as cultural and structural barriers to accessing healthcare. In this review, we discuss both biological and anthropological influences relating to risk of pathogen exposure, vulnerability to infection or development of active disease, and access to treatment for migrant and ethnic minorities in the UK.
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Affiliation(s)
- Sally Hayward
- St John’s College, University of Oxford, Oxford, OX1 3JP, UK
| | | | - Helen McShane
- The Jenner Institute, University of Oxford, Oxford, OX1 3PS, UK
| | - Rachel Tanner
- The Jenner Institute, University of Oxford, Oxford, OX1 3PS, UK
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142
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Hameed HMA, Islam MM, Chhotaray C, Wang C, Liu Y, Tan Y, Li X, Tan S, Delorme V, Yew WW, Liu J, Zhang T. Molecular Targets Related Drug Resistance Mechanisms in MDR-, XDR-, and TDR- Mycobacterium tuberculosis Strains. Front Cell Infect Microbiol 2018; 8:114. [PMID: 29755957 PMCID: PMC5932416 DOI: 10.3389/fcimb.2018.00114] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 03/23/2018] [Indexed: 01/08/2023] Open
Abstract
Tuberculosis (TB) is a formidable infectious disease that remains a major cause of death worldwide today. Escalating application of genomic techniques has expedited the identification of increasing number of mutations associated with drug resistance in Mycobacterium tuberculosis. Unfortunately the prevalence of bacillary resistance becomes alarming in many parts of the world, with the daunting scenarios of multidrug-resistant tuberculosis (MDR-TB), extensively drug-resistant tuberculosis (XDR-TB) and total drug-resistant tuberculosis (TDR-TB), due to number of resistance pathways, alongside some apparently obscure ones. Recent advances in the understanding of the molecular/ genetic basis of drug targets and drug resistance mechanisms have been steadily made. Intriguing findings through whole genome sequencing and other molecular approaches facilitate the further understanding of biology and pathology of M. tuberculosis for the development of new therapeutics to meet the immense challenge of global health.
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Affiliation(s)
- H M Adnan Hameed
- State Key Laboratory of Respiratory Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Md Mahmudul Islam
- State Key Laboratory of Respiratory Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Chiranjibi Chhotaray
- State Key Laboratory of Respiratory Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Changwei Wang
- State Key Laboratory of Respiratory Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Yang Liu
- State Key Laboratory of Respiratory Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Institute of Health Sciences, Anhui University, Hefei, China
| | - Yaoju Tan
- State Key Laboratory of Respiratory Disease, Guangzhou Chest Hospital, Guangzhou, China
| | - Xinjie Li
- State Key Laboratory of Respiratory Disease, Guangzhou Chest Hospital, Guangzhou, China
| | - Shouyong Tan
- State Key Laboratory of Respiratory Disease, Guangzhou Chest Hospital, Guangzhou, China
| | - Vincent Delorme
- Tuberculosis Research Laboratory, Institut Pasteur Korea, Seongnam-si, South Korea
| | - Wing W Yew
- Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Jianxiong Liu
- State Key Laboratory of Respiratory Disease, Guangzhou Chest Hospital, Guangzhou, China
| | - Tianyu Zhang
- State Key Laboratory of Respiratory Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
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143
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Hartel LA, Yazbeck AS, Osewe PL. Responding to Health System Failure on Tuberculosis in Southern Africa. Health Syst Reform 2018. [DOI: 10.1080/23288604.2018.1441621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
| | - Abdo S. Yazbeck
- International Development Division, Abt Associates, Rockville, MD, USA
| | - Patrick L. Osewe
- Health Nutrition and Population Global Practice, World Bank, Washington, DC, USA
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144
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Mansouri F, Heydarzadeh R, Yousefi S. The association of interferon-gamma, interleukin-4 and interleukin-17 single-nucleotide polymorphisms with susceptibility to tuberculosis. APMIS 2018; 126:227-233. [DOI: 10.1111/apm.12810] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/30/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Fatemeh Mansouri
- Department of Genetics and Immunology; Faculty of Medicine; Urmia University of Medical Sciences; Urmia Iran
- Cellular and Molecular Research Center; Faculty of Medicine; Urmia University of Medical Sciences; Urmia Iran
| | - Rasoul Heydarzadeh
- Cellular and Molecular Research Center; Faculty of Medicine; Urmia University of Medical Sciences; Urmia Iran
- Department of Microbiology and Virology; Faculty of Medicine; Urmia University of Medical Sciences; Urmia Iran
| | - Saber Yousefi
- Cellular and Molecular Research Center; Faculty of Medicine; Urmia University of Medical Sciences; Urmia Iran
- Department of Microbiology and Virology; Faculty of Medicine; Urmia University of Medical Sciences; Urmia Iran
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145
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Rawal T, Kremer L, Halloum I, Butani S. Dry-Powder Inhaler Formulation of Rifampicin: An Improved Targeted Delivery System for Alveolar Tuberculosis. J Aerosol Med Pulm Drug Deliv 2017; 30:388-398. [DOI: 10.1089/jamp.2017.1379] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Tejal Rawal
- Institute of Pharmacy, Nirma University, Gujarat, Ahmedabad, India
| | - Laurent Kremer
- Centred'étude des Pathogènes et Biotechnologies pour la Santé, Montpellier, France
| | - Iman Halloum
- Centred'étude des Pathogènes et Biotechnologies pour la Santé, Montpellier, France
| | - Shital Butani
- Institute of Pharmacy, Nirma University, Gujarat, Ahmedabad, India
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146
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Wu X, Wang Y, Weng T, Hu C, Wang FX, Wu Z, Yu D, Lu H, Yao H. Preparation of immunochromatographic strips for rapid detection of early secreted protein ESAT-6 and culture filtrate protein CFP-10 from Mycobacterium tuberculosis. Medicine (Baltimore) 2017; 96:e9350. [PMID: 29390519 PMCID: PMC5758221 DOI: 10.1097/md.0000000000009350] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The early secreted protein early secretory antigenic target 6(ESAT-6) and the culture filtrate protein 10 (CFP-10) are 2 antigens that are specific to Mycobacterium tuberculosis. These 2 antigens are good targets for tuberculosis (TB) detection.To rapidly diagnose TB across a variety of samples, we developed colloidal gold immunochromatographic strips (ICSs) based on ESAT-6 and CFP-10.The strips were evaluated using 233 samples, including sputum, plasma, and pleural effusion samples.The positive detection rates for ICSs for ESAT-6 and CFP-10 in sputum (culture-positive for M tuberculosis) were 100% and 91.2%, respectively. The positive detection rates for ICSs for ESAT-6 and CFP-10 in plasma were 34.1% and 29.4%, respectively. The positive detection rates for ICSs for ESAT-6 and CFP-10 in pleural effusion were 64.7% and 55.9%, respectively. Experimental analysis of culture supernatant showing that the ICS developed for ESAT-6 had a sensitivity of 100% and a specificity of 91.2%. While the ICS developed for CFP-10 had a sensitivity of 91.2% and a specificity of 88.2%.The validity of the test is limited by source of sample. The technique is sensitive and specific for samples in sputum and culture media but not for plasma or pleural effusion samples. Detection of M tuberculosis using ICSs is rapid, simple, and relatively effective; thus, ICSs are a potential screening tool for TB.
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Affiliation(s)
- Xiaoxin Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou
| | - Yeping Wang
- Center of Clinical Experimental Medicine, The People's Hospital of Changxin, Huzhou, China
| | - Tianhao Weng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou
| | - Chenyu Hu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou
| | - Frederick X.C. Wang
- Department of Bioengineering, Erik Jonsson School of Engineering and Computer Science, The University of Texas at Dallas, TX
| | - Zhigang Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou
| | - Dongshan Yu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou
| | - Huoquan Lu
- Center of Clinical Experimental Medicine, The People's Hospital of Changxin, Huzhou, China
| | - Hangping Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou
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147
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Ready Experimental Translocation of Mycobacterium canettii Yields Pulmonary Tuberculosis. Infect Immun 2017; 85:IAI.00507-17. [PMID: 28923895 DOI: 10.1128/iai.00507-17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 09/14/2017] [Indexed: 11/20/2022] Open
Abstract
Mycobacterium canettii, which has a smooth colony morphology, is the tuberculous organism retaining the most genetic traits from the putative last common ancestor of the rough-morphology Mycobacterium tuberculosis complex. To explore whether M. canettii can infect individuals by the oral route, mice were fed phosphate-buffered saline or 106M. canettii mycobacteria and sacrificed over a 28-day experiment. While no M. canettii was detected in negative controls, M. canettii-infected mice yielded granuloma-like lesions for 4/4 lungs at days 14 and 28 postinoculation (p.i.) and positive PCR detection of M. canettii for 5/8 mesenteric lymph nodes at days 1 and 3 p.i. and 5/6 pooled stools collected from day 1 to day 28 p.i. Smooth M. canettii colonies grew from 68% of lungs and 36% of spleens and cervical lymph nodes but fewer than 20% of axillary lymph nodes, livers, brown fat samples, kidneys, or blood samples throughout the 28-day experiment. Ready translocation in mice after digestive tract challenge demonstrates the potential of ingested M. canettii organisms to relocate to distant organs and lungs. The demonstration of this relocation supports the possibility that populations may be infected by environmental M. canettii.
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148
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Aw B, Ade S, Hinderaker SG, Dlamini N, Takarinda KC, Chiaa K, Feil A, Traoré A, Reid T. Childhood tuberculosis in Mauritania, 2010-2015: diagnosis and outcomes in Nouakchott and the rest of the country. Public Health Action 2017; 7:199-205. [PMID: 29201655 DOI: 10.5588/pha.16.0123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 05/25/2017] [Indexed: 11/10/2022] Open
Abstract
Setting: The National Tuberculosis Programme, Mauritania. Objective: To compare the diagnosis and treatment outcomes of childhood tuberculosis (TB) cases (aged <15 years) registered between 2010 and 2015 inside and outside Nouakchott, the capital city. Design: This was a retrospective comparative cohort study. Results: A total of 948 children with TB were registered. The registration rate was 10 times higher in Nouakchott. The proportion of children among all TB cases was higher inside than outside Nouakchott (7.5% vs. 4.6%, P < 0.01). Under-fives represented 225 (24%) of all childhood TB cases, of whom 204 (91%) were registered in Nouakchott. Extra-pulmonary TB was more common in Nouakchott, while smear-negative TB was less common. Treatment success was similar inside and outside Nouakchott (national rate 61%). The principal unsuccessful outcomes were loss to follow-up outside Nouakchott (21% vs. 11%, P < 0.01) while transfers out were more common in the city (25% vs. 14%, P = 0.01). Being aged <5 years (OR 1.2, 95%CI 1.1-1.5) was associated with an unsuccessful outcome. Conclusion: This study indicates problems in the diagnosis and treatment of childhood TB in Mauritania, especially outside the city of Nouakchott. We suggest strengthening clinical diagnosis and management, improving communications between TB treatment centres and health services and pressing the TB world to develop more accurate and easy-to-use diagnostic tools for children.
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Affiliation(s)
- B Aw
- Programme National de Lutte contre la, Tuberculose et la Lèpre, Nouakchott, Mauritanie
| | - S Ade
- Université de Parakou, Parakou, Bénin.,Programme National contre la Tuberculose, Cotonou, Bénin.,International Union Against Tuberculosis and Lung Disease, Paris, France
| | | | - N Dlamini
- National Malaria Control Programme, Ministry of Health, Mbabane, Swaziland
| | - K C Takarinda
- International Union Against Tuberculosis and Lung Disease, Paris, France.,AIDS & TB Department, Ministry of Health and Child Care, Harare, Zimbabwe
| | - K Chiaa
- Programme National de Lutte contre la, Tuberculose et la Lèpre, Nouakchott, Mauritanie
| | - A Feil
- Centre Hospitalier National de Nouakchott, Mauritanie.,Faculté de Médecine, Université de Nouakchott, Nouakchott, Mauritanie
| | - A Traoré
- Programme National de Lutte contre la, Tuberculose et la Lèpre, Nouakchott, Mauritanie
| | - T Reid
- Operational Research Unit (LuxOR), Medical Department, Operational Centre Brussels, Médecins Sans Frontières Luxembourg
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149
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Shojaei SRH, Waghei Y, Mohammadzadeh M. Geostatistical analysis of disease data: a case study of tuberculosis incidence in Iran. J Appl Stat 2017. [DOI: 10.1080/02664763.2017.1375468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Yadollah Waghei
- Department of Statistics, University of Birjand, Birjand, Iran
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150
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Laokri S. Collaborative Approaches and Policy Opportunities for Accelerated Progress toward Effective Disease Prevention, Care, and Control: Using the Case of Poverty Diseases to Explore Universal Access to Affordable Health Care. Front Med (Lausanne) 2017; 4:130. [PMID: 28890891 PMCID: PMC5575342 DOI: 10.3389/fmed.2017.00130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 07/24/2017] [Indexed: 12/14/2022] Open
Abstract
Background There is a massive global momentum to progress toward the sustainable development and universal health coverage goals. However, effective policies to health-care coverage can only emerge through high-quality services delivered to empowered care users by means of strong local health systems and a translational standpoint. Health policies aimed at removing user fees for a defined health-care package may fail at reaching desired results if not applied with system thinking. Method Secondary data analysis of two country-based cost-of-illness studies was performed to gain knowledge in informed decision-making toward enhanced access to care in the context of resource-constraint settings. A scoping review was performed to map relevant experiences and evidence underpinning the defined research area, the economic burden of illness. Findings Original studies reflected on catastrophic costs to patients because of care services use and related policy gaps. Poverty diseases such as tuberculosis (TB) may constitute prime examples to assess the extent of effective high-priority health-care coverage. Our findings suggest that a share of the economic burden of illness can be attributed to implementation failures of health programs and supply-side features, which may highly impair attainment of the global stated goals. We attempted to define and discuss a knowledge development framework for effective policy-making and foster system levers for integrated care. Discussion Bottlenecks to effective policy persist and rely on interrelated patterns of health-care coverage. Health system performance and policy responsiveness have to do with collaborative work among all health stakeholders. Public–private mix strategies may play a role in lowering the economic burden of disease and solving some policy gaps. We reviewed possible added value and pitfalls of collaborative approaches to enhance dynamic local knowledge development and realize integration with the various health-care silos. Conclusion Despite a large political commitment and mobilization efforts from funding, the global development goal of financial protection for health—newly adopted in TB control as no TB-affected household experiencing catastrophic expenditure—may remain aspirational. To enhance effective access to care for all, innovative opportunities in patient-centered and collaborative practices must be taken. Further research is greatly needed to optimize the use of locally relevant knowledge, networks, and technologies.
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Affiliation(s)
- Samia Laokri
- School of Public Health, Health Policy and Systems - International Health, Université Libre de Bruxelles, Brussels, Belgium.,School of Public Health and Tropical Medicine, Global Community Health and Behavioral Sciences, Tulane University, New Orleans, LA, United States.,Institute for Interdisciplinary Innovation in Healthcare (13h), Université Libre de Bruxelles, Brussels, Belgium
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