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Hailu S, Hurst C, Cyphers G, Thottunkal S, Harley D, Viney K, Irwin A, Dean J, Nourse C. Prevalence of extra-pulmonary tuberculosis in Africa: A systematic review and meta-analysis. Trop Med Int Health 2024; 29:257-265. [PMID: 38263374 DOI: 10.1111/tmi.13970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
OBJECTIVE The burden of extra-pulmonary tuberculosis (EPTB) is not well quantified in TB endemic countries such as those in sub-Saharan Africa. This study aimed to quantify that burden via a systematic review of the prevalence of EPTB in African countries. METHODS Studies were retrieved by searching five databases; 105 studies published between 1990 and 2023 were included. The studies described the prevalence of EPTB among the general population (4 studies), TB patients (68) and patients with other conditions, including HIV (15), meningitis (3), renal failure (3) and other comorbidities, some of which are cancer (12). Due to the low number of studies reporting EPTB in patients with conditions other than TB, the meta-analysis was performed on studies reporting on EPTB among TB patients (68 studies). Meta-analysis was performed on the 68 studies (271,073 participants) using a random-effects model to estimate the pooled prevalence of EPTB. Meta-regression was used to explore possible explanations for heterogeneity according to regions and time periods. RESULTS The pooled prevalence of EPTB among TB patients was 26% (95% CI 23-29%). There was substantial heterogeneity of prevalence for the five African regions. The Eastern region had the highest prevalence of 32% (95% CI 28-37%) and the lowest in Western Africa, 16% (95% CI 10-24%). There was no significant difference in the prevalence of EPTB between the 3 eleven-year time periods. CONCLUSIONS Our systematic review and meta-analysis give insight into the burden of EPTB in Africa. This review could inform clinical and programmatic practices-a higher suspicion index for clinicians and more effort for better services. This could contribute to efforts aiming to end TB, which have historically been focused on PTB.Coordinated efforts that target both EPTB and PTB are needed.
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Affiliation(s)
- Semira Hailu
- UQ Centre for Clinical Research, The University of Queensland, Brisbane, Australia
| | - Cameron Hurst
- Molly Wardaguga Research Centre, Charles Darwin University, Brisbane, Australia
| | - Griffin Cyphers
- Faculty of Medicine, School of Public Health, The University of Queensland, Brisbane, Australia
| | - Stefan Thottunkal
- ANU College of Health and Medicine, Australian National University, Canberra, Australia
| | - David Harley
- UQ Centre for Clinical Research, The University of Queensland, Brisbane, Australia
| | - Kerri Viney
- ANU College of Health and Medicine, Australian National University, Canberra, Australia
- School of Public Health, University of Sydney, Camperdown, Australia
- Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | - Adam Irwin
- UQ Centre for Clinical Research, The University of Queensland, Brisbane, Australia
- Infection Management and Prevention Service, Queensland Children's Hospital, Brisbane, Australia
| | - Judith Dean
- Faculty of Medicine, School of Public Health, The University of Queensland, Brisbane, Australia
- UQ Poche Centre for Indigenous Health, The University of Queensland, Brisbane, Australia
| | - Clare Nourse
- UQ Centre for Clinical Research, The University of Queensland, Brisbane, Australia
- Infection Management and Prevention Service, Queensland Children's Hospital, Brisbane, Australia
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Teo EJM, Hailu S, Kelava S, Zalucki MP, Furlong MJ, Nakao R, Barker D, Barker SC. Climatic requirements of the southern paralysis tick, Ixodes cornuatus, with a consideration of its host, Vombatus ursinus, and the possible geographic range of the tick up to 2090. Ticks Tick Borne Dis 2021; 12:101758. [PMID: 34153869 DOI: 10.1016/j.ttbdis.2021.101758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 04/29/2021] [Accepted: 05/02/2021] [Indexed: 11/16/2022]
Abstract
The southern paralysis tick, Ixodes cornuatus, is a tick of veterinary and medical importance in Australia. We use two methods, CLIMEX, and an envelope-model approach which we name the 'climatic-range method' to study the climatic requirements of I. cornuatus and thus to attempt to account for the geographic distribution of I. cornuatus. CLIMEX and our climatic-range method allowed us to account for 94% and 97% of the records of I. cornuatus respectively. We also studied the host preferences of I. cornuatus which we subsequently used in conjunction with our species distribution methods to account for the presence and the absences of I. cornuatus across Australia. Our findings indicate that the actual geographic distribution of I. cornuatus is smaller than the potential geographic range of this tick, and thus, that there are regions in Australia which may be suitable for I. cornuatus where this tick has not been recorded. Although our findings indicate that I. cornuatus might be able to persist in these currently unoccupied regions, our findings also indicate that the potential geographic range of I. cornuatus may shrink by 51 to 76% by 2090, depending on which climate change scenario comes to pass.
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Affiliation(s)
- Ernest J M Teo
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Semira Hailu
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Samuel Kelava
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Myron P Zalucki
- School of Biological Sciences, The University of Queensland, QLD 4072, Australia
| | - Michael J Furlong
- School of Biological Sciences, The University of Queensland, QLD 4072, Australia
| | - Ryo Nakao
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
| | - Dayana Barker
- School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia
| | - Stephen C Barker
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia.
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Teo EJM, Vial MN, Hailu S, Kelava S, Zalucki MP, Furlong MJ, Barker D, Barker SC. Climatic requirements of the eastern paralysis tick, Ixodes holocyclus, with a consideration of its possible geographic range up to 2090. Int J Parasitol 2021; 51:241-249. [PMID: 33513402 DOI: 10.1016/j.ijpara.2020.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/18/2020] [Accepted: 08/26/2020] [Indexed: 11/24/2022]
Abstract
The eastern paralysis tick, Ixodes holocyclus, is an ectoparasite of medical and veterinary importance in Australia. The feeding of I. holocyclus is associated with an ascending flaccid paralysis which kills many dogs and cats each year, with the development of mammalian meat allergy in some humans, and with the transmission of Rickettsia australis (Australian scrub typhus) to humans. Although I. holocyclus has been well studied, it is still not known exactly why this tick cannot establish outside of its present geographic distribution. Here, we aim to account for the presence as well as the absence of I. holocyclus in regions of Australia. We modelled the climatic requirements of I. holocyclus with two methods, CLIMEX, and a new envelope-model approach which we name the 'climatic-range method'. These methods allowed us to account for 93% and 96% of the geographic distribution of I. holocyclus, respectively. Our analyses indicated that the geographic range of I. holocyclus may not only shift south towards Melbourne, but may also expand in the future, depending on which climate-change scenario comes to pass.
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Affiliation(s)
- Ernest J M Teo
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Melanie N Vial
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Semira Hailu
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Samuel Kelava
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Myron P Zalucki
- School of Biological Sciences, The University of Queensland, QLD 4072, Australia
| | - Michael J Furlong
- School of Biological Sciences, The University of Queensland, QLD 4072, Australia
| | - Dayana Barker
- School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia
| | - Stephen C Barker
- Department of Parasitology, School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia.
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Bartlett S, Gemiarto AT, Ngo MD, Sajiir H, Hailu S, Sinha R, Foo CX, Kleynhans L, Tshivhula H, Webber T, Bielefeldt-Ohmann H, West NP, Hiemstra AM, MacDonald CE, Christensen LVV, Schlesinger LS, Walzl G, Rosenkilde MM, Mandrup-Poulsen T, Ronacher K. GPR183 Regulates Interferons, Autophagy, and Bacterial Growth During Mycobacterium tuberculosis Infection and Is Associated With TB Disease Severity. Front Immunol 2020; 11:601534. [PMID: 33240287 PMCID: PMC7677584 DOI: 10.3389/fimmu.2020.601534] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 10/14/2020] [Indexed: 12/15/2022] Open
Abstract
Oxidized cholesterols have emerged as important signaling molecules of immune function, but little is known about the role of these oxysterols during mycobacterial infections. We found that expression of the oxysterol-receptor GPR183 was reduced in blood from patients with tuberculosis (TB) and type 2 diabetes (T2D) compared to TB patients without T2D and was associated with TB disease severity on chest x-ray. GPR183 activation by 7α,25-dihydroxycholesterol (7α,25-OHC) reduced growth of Mycobacterium tuberculosis (Mtb) and Mycobacterium bovis BCG in primary human monocytes, an effect abrogated by the GPR183 antagonist GSK682753. Growth inhibition was associated with reduced IFN-β and IL-10 expression and enhanced autophagy. Mice lacking GPR183 had significantly increased lung Mtb burden and dysregulated IFNs during early infection. Together, our data demonstrate that GPR183 is an important regulator of intracellular mycobacterial growth and interferons during mycobacterial infection.
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MESH Headings
- Animals
- Autophagy
- Bacterial Load
- Case-Control Studies
- Diabetes Mellitus, Type 2/immunology
- Diabetes Mellitus, Type 2/metabolism
- Disease Models, Animal
- Female
- Host-Pathogen Interactions
- Humans
- Interferons/metabolism
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/metabolism
- Leukocytes, Mononuclear/microbiology
- Lung/immunology
- Lung/metabolism
- Lung/microbiology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Mycobacterium bovis/growth & development
- Mycobacterium bovis/immunology
- Mycobacterium bovis/pathogenicity
- Mycobacterium tuberculosis/growth & development
- Mycobacterium tuberculosis/immunology
- Mycobacterium tuberculosis/pathogenicity
- Receptors, G-Protein-Coupled/genetics
- Receptors, G-Protein-Coupled/metabolism
- Severity of Illness Index
- Signal Transduction
- THP-1 Cells
- Tuberculosis, Pulmonary/immunology
- Tuberculosis, Pulmonary/metabolism
- Tuberculosis, Pulmonary/microbiology
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Affiliation(s)
- Stacey Bartlett
- Translational Research Institute–Mater Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Adrian Tandhyka Gemiarto
- Translational Research Institute–Mater Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Minh Dao Ngo
- Translational Research Institute–Mater Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Haressh Sajiir
- Translational Research Institute–Mater Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Semira Hailu
- Translational Research Institute–Mater Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Roma Sinha
- Translational Research Institute–Mater Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Cheng Xiang Foo
- Translational Research Institute–Mater Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Léanie Kleynhans
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Happy Tshivhula
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Tariq Webber
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Helle Bielefeldt-Ohmann
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Nicholas P. West
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Andriette M. Hiemstra
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Candice E. MacDonald
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | | | - Larry S. Schlesinger
- Host-Pathogens Interactions Program, Texas Biomedical Research Institute, San Antonio, TX, United States
| | - Gerhard Walzl
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | | | | | - Katharina Ronacher
- Translational Research Institute–Mater Research Institute, The University of Queensland, Brisbane, QLD, Australia
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
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Shadid M, Gurau G, Shamshina JL, Chuang BC, Hailu S, Guan E, Chowdhury SK, Wu JT, Rizvi SAA, Griffin RJ, Rogers RD. Sulfasalazine in ionic liquid form with improved solubility and exposure. Med Chem Commun 2015; 6:1837-1841. [DOI: 10.1039/c5md00290g] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
Abstract
An ionic liquid form of sulfasalazine demonstrates improved solubility (4000×), bioavailability (2.5×), andin vivoexposure over the neutral drug.
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Gannett PM, Hailu S, Daft J, James D, Rybeck B, Tracy TS. In vitro reaction of formaldehyde with fenfluramine: conversion to N-methyl fenfluramine. J Anal Toxicol 2001; 25:88-92. [PMID: 11300512 DOI: 10.1093/jat/25.2.88] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Embalming is common, and it can create problems for the forensic scientist if a drug has been the cause death and this drug is also reactive toward the embalming fluid. Previous studies have focused on the tricyclic amines nortriptyline and desipramine. In the presence of formaldehyde, a typical component of embalming fluid, either of these two compounds can be rapidly converted to their methylated derivatives amitriptyline and imipramine, respectively. We have begun a larger project designed to determine the reactivity and reactions of a wide range of drugs with formaldehyde. We report here our results from fenfluramine, which, like the tricyclic amines, is reactive towards formaldehyde and is converted into its N-methyl derivative. The rate of conversion is dependent upon pH and formaldehyde concentration. Up to 100% conversion in 24 h was observed. In addition, we have also devised a simplified procedure for monitoring this process that may be useful for others working in this area. Finally, we note that the reactions of fenfluramine studied here and of amines in general with formaldehyde need to be considered when performing postmortem/postembalming forensic analysis.
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Affiliation(s)
- P M Gannett
- West Virginia University, School of Pharmacy, Department of Basic Pharmaceutical Sciences, Morgantown 26506-9530, USA
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Abstract
OBJECTIVES To analyse underlying conditions, clinical manifestations, aetiologic agents and management of empyema thoracis and to determine the outcome of the disease. DESIGN A retrospective study. SETTING Ethio-Swedish Children's Central referral (teaching) Hospital, Addis Ababa, Ethiopia. SUBJECTS Thirty eight patients with a discharge diagnosis of non-tuberculous thoracic empyema seen from January 1988 to December 1992. RESULTS The incidence was 2.7/1000 admissions, which is higher than that reported elsewhere. Sixty six per cent of the patients were under five. Pneumonia was the antecedent illness in almost all cases. Fever, dyspnoea and signs of respiratory distress and effusion were the commonest presenting features. Bacteriological examination revealed Staphylococcus aureus as the commonest aetiologic agent (58%). All patients were treated with antibiotics, and drainage of the empyema was effected by closed thoracostomy in 71% of the cases, while the rest were managed with thoracentesis alone. The case fatality rate was 16%. A long hospital stay and high rate of complications were also observed. CONCLUSION Empyema is not rare in our practice. Early diagnosis and proper treatment of pneumonia prevents the development of empyema. Therefore, establishing an efficient management protocol that is relevant to our particular set up is required.
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Affiliation(s)
- S Hailu
- Addis Ababa University, Ethio-Swedish Hospital, P.O. Box 1176, Addis Ababa, Ethiopia
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