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Wang J, Zhao P, Xu W, Wang C. Changing trends in Chlamydia and gonorrhea infections among female sex workers in Southern China: a surveillance data analysis spanning 2019 to 2022. J Public Health (Oxf) 2024; 46:72-82. [PMID: 38031291 DOI: 10.1093/pubmed/fdad222] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Female sex workers (FSW) are particularly vulnerable to chlamydia and gonorrhea infections. However, there were few studies that detail the evolving patterns of chlamydia and gonorrhea among Chinese FSW. Therefore, our study endeavors to assess the prevalence of chlamydia and gonorrhea epidemics within FSW, investigate their changing trends and scrutinize associated factors. METHODS In 2019, China instituted a sentinel surveillance network focused on FSW in Guangdong Province. This network conducted an annual serial cross-sectional survey spanning from April to August. All analyses are predicated on surveillance data accumulated between 2019 and 2022. RESULTS The prevalence of chlamydia increased from 10.1 to 12.3%, exhibiting an annual percentage shift of 6.8%. Conversely, the prevalence of gonorrhea dwindled from 2.0 to 1.3%, marking an annual percentage decline of 13.4% (P < 0.001). After adjusting for covariates, chlamydia exhibited associations with having household registration in other provinces (adjusted odds ratio (aOR = 0.55)), displaying symptoms of sexually transmitted infections (STIs) (aOR = 1.65) and infected with gonorrhea (aOR = 5.68). In parallel, gonorrhea demonstrated associations with providing oral sex to clients (aOR = 3.74), manifesting STIs symptoms (aOR = 4.27) and those infected with chlamydia (aOR = 5.43). CONCLUSIONS Our observations underscore the imperative to implement a comprehensive intervention strategy concentrating on chlamydia, while simultaneously fortifying endeavors to expand the scope of gonorrhea prevention services.
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Affiliation(s)
- Jinshen Wang
- School of Public Health, Southern Medical University, Guangzhou 510515, China
- Dermatology Hospital, Southern Medical University, Guangzhou 510095, China
- Southern Medical University Institute for Global Health, Guangzhou 510095, China
| | - Peizhen Zhao
- Dermatology Hospital, Southern Medical University, Guangzhou 510095, China
- Southern Medical University Institute for Global Health, Guangzhou 510095, China
| | - Wenqian Xu
- School of Public Health, Southern Medical University, Guangzhou 510515, China
- Dermatology Hospital, Southern Medical University, Guangzhou 510095, China
- Southern Medical University Institute for Global Health, Guangzhou 510095, China
| | - Cheng Wang
- School of Public Health, Southern Medical University, Guangzhou 510515, China
- Dermatology Hospital, Southern Medical University, Guangzhou 510095, China
- Southern Medical University Institute for Global Health, Guangzhou 510095, China
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Gautron JMC, Tu Thanh G, Barasa V, Voltolina G. Using intersectionality to study gender and antimicrobial resistance in low- and middle-income countries. Health Policy Plan 2023; 38:1017-1032. [PMID: 37599460 PMCID: PMC10566319 DOI: 10.1093/heapol/czad054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 06/29/2023] [Accepted: 07/25/2023] [Indexed: 08/22/2023] Open
Abstract
Different sexes and genders experience differentiated risks of acquiring infections, including drug-resistant infections, and of becoming ill. Different genders also have different health-seeking behaviours that shape their likelihood of having access to and appropriately using and administering antimicrobials. Consequently, they are distinctly affected by antimicrobial resistance (AMR). As such, it is crucial to incorporate perspectives on sex and gender in the study of both AMR and antimicrobial use in order to present a full picture of AMR's drivers and impact. An intersectional approach to understanding gender and AMR can display how gender and other components 'intersect' to shape the experiences of individuals and groups affected by AMR. However, there are insufficient data on the burden of AMR disaggregated by gender and other socio-economic characteristics, and where available, it is fragmented. For example, to date, the best estimate of the global burden of bacterial AMR published in The Lancet does not consider gender or other social stratifiers in its analysis. To address this evidence gap, we undertook a scoping review to examine how sex and gender compounded by other axes of marginalization influence one's vulnerability and exposure to AMR as well as one's access to and use of antimicrobials. We undertook a gendered analysis of AMR, using intersectionality as a concept to help us understand the multiple and overlapping ways in which different people experience exposure vulnerability to AMR. This approach is crucial in informing a more nuanced view of the burden and drivers of AMR. The intersectional gender lens should be taken into account in AMR surveillance, antimicrobial stewardship, infection prevention and control and public and professional awareness efforts, both donor and government funded, as well as national and international policies and programmes tackling AMR such as through national action plans.
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Affiliation(s)
- Juliette M C Gautron
- Department of Social Anthropology, University of Cambridge, Free School Lane, Cambridge, CB2 3RF, United Kingdom
| | - Giada Tu Thanh
- Independent Consultant, Gran de Gracia, Barcelona 08012, Spain
| | - Violet Barasa
- Institute of Development Studies, University of Sussex, Library Road, Brighton & Hove, BN1 9RE, United Kingdom
| | - Giovanna Voltolina
- Itad, Preece House, Davigdor Road, Brighton & Hove, BN3 1RE, United Kingdom
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Soge OO, Issema R, Bukusi E, Baeten JM, Mujugira A, Celum C, McClelland RS, Stewart J. Predominance of High-Level Tetracycline-Resistant Neisseria gonorrhoeae in Kenya: Implications for Global Implementation of Doxycycline Postexposure Prophylaxis for Prevention of Sexually Transmitted Infections. Sex Transm Dis 2023; 50:317-319. [PMID: 36728331 PMCID: PMC10101884 DOI: 10.1097/olq.0000000000001769] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
ABSTRACT Using archived Neisseria gonorrhoeae samples from 2008 to 2012, the prevalence of tet (M) genemediating high-level tetracycline resistance in N. gonorrhoeae was 96% among 50 Kenyan women. Determining the local and national prevalence of gonococcal tetracycline resistance and surveillance of gonococcal antimicrobial resistance can inform the implementation of doxycycline postexposure prophylaxis for STI prevention.
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Affiliation(s)
- Olusegun O. Soge
- Department of Global Health, University of Washington, Seattle, WA
- Department of Medicine, University of Washington, Seattle, WA
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA
| | - Rodal Issema
- Department of Epidemiology, University of Washington, Seattle, WA
| | - Elizabeth Bukusi
- Department of Global Health, University of Washington, Seattle, WA
- Department of Obstetrics and Gynecology, University of Washington, Seattle, WA
- Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Jared M. Baeten
- Department of Global Health, University of Washington, Seattle, WA
| | - Andrew Mujugira
- Department of Global Health, University of Washington, Seattle, WA
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | - Connie Celum
- Department of Global Health, University of Washington, Seattle, WA
- Department of Medicine, University of Washington, Seattle, WA
- Department of Epidemiology, University of Washington, Seattle, WA
| | - R. Scott McClelland
- Department of Global Health, University of Washington, Seattle, WA
- Department of Medicine, University of Washington, Seattle, WA
- Department of Epidemiology, University of Washington, Seattle, WA
| | - Jenell Stewart
- Hennepin Healthcare Research Institute, Minneapolis, MN
- Department of Medicine, University of Minnesota, Minneapolis, MN
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Kakooza F, Kiggundu R, Mboowa G, Kateete PD, Nsangi OT, Kabahita JM, Ssentalo Bagaya B, Golparian D, Unemo M. Antimicrobial susceptibility surveillance and antimicrobial resistance in Neisseria gonorrhoeae in Africa from 2001 to 2020: A mini-review. Front Microbiol 2023; 14:1148817. [PMID: 37089569 PMCID: PMC10117771 DOI: 10.3389/fmicb.2023.1148817] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/15/2023] [Indexed: 04/25/2023] Open
Abstract
Antimicrobial resistance (AMR) in Neisseria gonorrhoeae (NG), compromising gonorrhea treatment, is a global public health concern. Improved, quality-assured NG AMR monitoring at the global level is essential. This mini-review examined NG AMR susceptibility surveillance and AMR data from the African continent from 2001 to 2020. Eligible peer-reviewed publications (n = 30) containing NG AMR data for antimicrobials currently recommended for gonorrhea treatment were included. Overall, very limited NG surveillance and AMR data was available. Furthermore, the NG AMR surveillance studies varied greatly regarding surveillance protocols (e.g., populations and samples tested, sample size, antimicrobials examined), methodologies (e.g., antimicrobial susceptibility testing method [agar dilution, minimum inhibitory concentration (MIC) gradient strip test, disc diffusion test] and interpretative criteria), and quality assurance (internal quality controls, external quality assessments [EQA], and verification of AMR detected). Moreover, most studies examined a suboptimal number of NG isolates, i.e., less than the WHO Global Gonococcal Antimicrobial Surveillance Program (GASP) and WHO Enhanced GASP (EGASP) recommendations of ≥100 isolates per setting and year. The notable inter-study variability and frequently small sample sizes make appropriate inter-study and inter-country comparisons of AMR data difficult. In conclusion, it is imperative to establish an enhanced, standardized and quality-assured NG AMR surveillance, ideally including patient metadata and genome sequencing as in WHO EGASP, in Africa, the region with the highest gonorrhea incidence globally. This will enable the monitoring of AMR trends, detection of emerging AMR, and timely refinements of national and international gonorrhea treatment guidelines. To achieve this aim, national and international leadership, political and financial commitments are imperative.
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Affiliation(s)
- Francis Kakooza
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
- Department of Immunology and Molecular Biology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Reuben Kiggundu
- USAID Medicines, Technologies, and Pharmaceutical Services (MTaPS) Program, Management Sciences for Health, Kampala, Uganda
| | - Gerald Mboowa
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
- Department of Immunology and Molecular Biology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Patrick David Kateete
- Department of Immunology and Molecular Biology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Olga Tendo Nsangi
- Department of Immunology and Molecular Biology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Jupiter Marina Kabahita
- Department of Immunology and Molecular Biology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Bernard Ssentalo Bagaya
- Department of Immunology and Molecular Biology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Daniel Golparian
- WHO Collaborating Centre for Gonorrhoea and Other STIs, Department of Laboratory Medicine, Microbiology, Örebro University, Örebro, Sweden
| | - Magnus Unemo
- WHO Collaborating Centre for Gonorrhoea and Other STIs, Department of Laboratory Medicine, Microbiology, Örebro University, Örebro, Sweden
- Institute for Global Health, University College London (UCL), London, United Kingdom
- *Correspondence: Magnus Unemo,
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Heidary M, Ebrahimi Samangani A, Kargari A, Kiani Nejad A, Yashmi I, Motahar M, Taki E, Khoshnood S. Mechanism of action, resistance, synergism, and clinical implications of azithromycin. J Clin Lab Anal 2022; 36:e24427. [PMID: 35447019 PMCID: PMC9169196 DOI: 10.1002/jcla.24427] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/20/2022] [Accepted: 03/24/2022] [Indexed: 12/02/2022] Open
Abstract
Background Azithromycin (AZM), sold under the name Zithromax, is classified as a macrolide. It has many benefits due to its immunomodulatory, anti‐inflammatory, and antibacterial effects. This review aims to study different clinical and biochemisterial aspects and properties of this drug which has a priority based on literature published worldwide. Methods Several databases including Web of Science, Google Scholar, PubMed, and Scopus were searched to obtain the relevant studies. Results AZM mechanism of action including the inhibition of bacterial protein synthesis, inhibition of proinflammatory cytokine production, inhibition of neutrophil infestation, and macrophage polarization alteration, gives it the ability to act against a wide range of microorganisms. Resistant organisms are spreading and being developed because of the irrational use of the drug in the case of dose and duration. AZM shows synergistic effects with other drugs against a variety of organisms. This macrolide is considered a valuable antimicrobial agent because of its use as a treatment for a vast range of diseases such as asthma, bronchiolitis, COPD, cystic fibrosis, enteric infections, STIs, and periodontal infections. Conclusions Our study shows an increasing global prevalence of AZM resistance. Thus, synergistic combinations are recommended to treat different pathogens. Moreover, continuous monitoring of AZM resistance by registry centers and the development of more rapid diagnostic assays are urgently needed.
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Affiliation(s)
- Mohsen Heidary
- Department of Laboratory Sciences, School of Paramedical Sciences, Sabzevar University of Medical Sciences, Sabzevar, Iran.,Cellular and Molecular Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | | | - Abolfazl Kargari
- Student Research Committee, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Aliakbar Kiani Nejad
- Student Research Committee, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Ilya Yashmi
- Student Research Committee, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Moloudsadat Motahar
- Department of Microbiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Elahe Taki
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Khoshnood
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
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Iwuji C, Pillay D, Shamu P, Murire M, Nzenze S, Cox LA, Mullick S. OUP accepted manuscript. J Antimicrob Chemother 2022; 77:2074-2093. [PMID: 35578892 PMCID: PMC9333409 DOI: 10.1093/jac/dkac159] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 04/23/2022] [Indexed: 11/12/2022] Open
Abstract
Objectives Limited antimicrobial resistance (AMR) surveillance coupled with syndromic management of sexually transmitted infections (STIs) in sub-Saharan Africa (SSA) could be contributing to an increase in AMR in the region. This systematic review aimed to synthesize data on the prevalence of AMR in common STIs in SSA and identify some research gaps that exist. Methods We searched three electronic databases for studies published between 1 January 2000 and 26 May 2020. We screened the titles and abstracts for studies that potentially contained data on AMR in SSA. Then we reviewed the full text of these studies to identify articles that reported data on the prevalence of AMR in Neisseria gonorrhoeae, Chlamydia trachomatis, Trichomonas vaginalis and Mycoplasma genitalium in SSA. We summarized the data using a narrative synthesis. Results The 40 included studies reported on AMR data from 7961 N. gonorrhoeae isolates from 15 countries in SSA and 350 M. genitalium specimens from South Africa. All four SSA regions reported very high rates of ciprofloxacin, tetracycline and penicillin resistance in N. gonorrhoeae. Resistance to cefixime or ceftriaxone was observed in all regions except West Africa. Azithromycin resistance, recommended as part of dual therapy with an extended-spectrum cephalosporin for gonorrhoea, was reported in all the regions. Both macrolide and fluoroquinolone-associated resistance were reported in M. genitalium in South Africa. Studies investigating AMR in C. trachomatis and T. vaginalis were not identified. Conclusions There is a need to strengthen AMR surveillance in SSA for prompt investigation and notification of drug resistance in STIs.
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Affiliation(s)
| | - Diantha Pillay
- Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
| | - Patience Shamu
- Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
| | - Mercy Murire
- Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
| | - Susan Nzenze
- Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
| | - Laura Ashleigh Cox
- Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
| | - Saiqa Mullick
- Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
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Ankrah D, Owusu H, Aggor A, Osei A, Ampomah A, Harrison M, Nelson F, Aboagye GO, Ekpale P, Laryea J, Selby J, Amoah S, Lartey L, Addison O, Bruce E, Mahungu J, Mirfenderesky M. Point Prevalence Survey of Antimicrobial Utilization in Ghana's Premier Hospital: Implications for Antimicrobial Stewardship. Antibiotics (Basel) 2021; 10:antibiotics10121528. [PMID: 34943740 PMCID: PMC8698913 DOI: 10.3390/antibiotics10121528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/08/2021] [Accepted: 12/08/2021] [Indexed: 12/19/2022] Open
Abstract
The first comprehensive point prevalence survey at the Korle Bu Teaching Hospital (KBTH) was performed as part of the 2019 Global Point Prevalence Survey (Global-PPS) on antimicrobials. The aim was to establish a PPS baseline for the whole hospital and to identify required stewardship interventions. The PPS was conducted over three days in June 2019 using the GLOBAL-PPS standardized method for surveillance of antimicrobial utilization in hospitals to evaluate antimicrobial prescribing. In all, 988 patients were admitted to 69 wards. Overall antimicrobial prevalence was 53.3%. More community-acquired infections (CAI) were treated empirically compared to health-care associated infections (94.0% vs. 86.1% respectively, p = 0.002). Main indications for prescribing antimicrobials were pneumonia (18.4%), skin and soft tissue infections (11.4%) and sepsis (11.1%). Among antimicrobials, systemic antibiotics accounted for 83.5%, of which amoxicillin with beta-lactam inhibitor (17.5%), metronidazole (11.8%) and ceftriaxone (11.5%) dominated. Guideline compliance was 89.0%. Stop/review dates were completed in 33.4% and documented reason was recorded in 53.0% of all prescriptions. If the findings in this PPS can be addressed antimicrobial stewardship at the KBTH stands to improve significantly.
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Affiliation(s)
- Daniel Ankrah
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
- Correspondence:
| | - Helena Owusu
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Asiwome Aggor
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Anthony Osei
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Agneta Ampomah
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Mark Harrison
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Frempomaa Nelson
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Grace Owusu Aboagye
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Priscilla Ekpale
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Jennifer Laryea
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Julia Selby
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Serwaa Amoah
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Linda Lartey
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Okaikor Addison
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Elizabeth Bruce
- Korle-Bu Teaching Hospital, Accra GA-221-1570, Ghana; (H.O.); (A.A.); (A.O.); (A.A.); (M.H.); (F.N.); (G.O.A.); (P.E.); (J.L.); (J.S.); (S.A.); (L.L.); (O.A.); (E.B.)
| | - Joyce Mahungu
- North Middlesex University Hospital NHS Trust, London N18 1QX, UK; (J.M.); (M.M.)
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Kivumbi MT, Standley CJ. Efforts to Identify and Combat Antimicrobial Resistance in Uganda: A Systematic Review. Trop Med Infect Dis 2021; 6:tropicalmed6020086. [PMID: 34074031 PMCID: PMC8163190 DOI: 10.3390/tropicalmed6020086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 11/16/2022] Open
Abstract
The global burden of antimicrobial resistance is on the rise, resulting in higher morbidity and mortality in our communities. The spread of antimicrobial resistance in the environment and development of resistant microbes is a challenge to the control of antimicrobial resistance. Approaches, such as antimicrobial stewardship programmes and enhanced surveillance, have been devised to curb its spread. However, particularly in lower- and middle-income countries, the overall extent of antimicrobial resistance and knowledge on ongoing surveillance, stewardship or investigation efforts, are often poorly understood. This study aimed to look at the efforts that have been undertaken to detect and combat antimicrobial resistance in Uganda as a means of establishing an overview of the situation, to help inform future decisions. We conducted a systematic literature review of the PubMed database to assess these efforts. A search combining keywords associated with antimicrobial resistance were used to find relevant studies between 1995 and 2020 on surveillance of antimicrobial resistance in Uganda, and susceptibility of microbes to different drugs. The search yielded 430 records, 163 of which met the inclusion criteria for analysis. The studies were categorized according to country and region, the type of antimicrobial resistance, context of the study, study design and outcome of the study. We observed that antibacterial resistance and antimalarial resistance had the most published studies while antiviral and antifungal resistance were represented by very few studies each. Most studies were conducted in humans and hospital settings, with few in veterinary and One Health contexts, and only one that included environmental sampling. The majority of studies have focused on surveillance, susceptibility testing or resistance genes; none of our included papers had a policy or stewardship focus. The results from our work can inform public health policy on antimicrobial stewardship as it contributes to understanding the status of antimicrobial resistance surveillance in Uganda, and can also help to guide future research efforts. Notably, a One Health approach needs to be followed with respect to surveillance of antimicrobial resistance to better understand the mechanisms of resistance transfer across the human-animal–environment interface, including additional investigation in antiviral and antifungal resistance.
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Affiliation(s)
- Mark Tefero Kivumbi
- School of Biosecurity, Biotechnical and Laboratory Sciences, Makerere University, Kampala P.O. Box 7062, Uganda;
| | - Claire J. Standley
- Center for Global Health Science and Security, Georgetown University, Washington, DC 20057, USA
- Correspondence: ; Tel.: +1-202-290-0451
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Derbie A, Mekonnen D, Woldeamanuel Y, Abebe T. Azithromycin resistant gonococci: a literature review. Antimicrob Resist Infect Control 2020; 9:138. [PMID: 32811545 PMCID: PMC7436955 DOI: 10.1186/s13756-020-00805-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 08/12/2020] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE Gonorrhea is the second most common sexually transmitted bacterial infection (STI) next to Chlamydia. Untreated cases could results in major complications like pelvic inflammatory disease (PID), ectopic pregnancy, infertility, miscarriage, fetal death and congenital infections. Gonorrhea has been treated with antibiotics for more than eight decades. However, the emergence and spread of antimicrobial resistance (AMR) in gonococcus seriously compromises the management of the disease. The aim of this review was to describe the current developments in the field of azithromycin resistant gonococci. METHODS Literatures published in English in the last 10 years were retrieved from PubMed, SCOPUS, Google scholar, Cochrane library and the Google databases using relevant searching terms. RESULTS Gonococcus is capable of using a number of strategies to confer resistance as the bacterium has an extraordinary capacity to alter its genome. So far the accumulated data on the field showed that the world is heading towards a pandemic of extensively drug-resistant (XDR) gonococcus which is now seems to be evolving into a true "superbug". Hence, in the near future gonorrhea may become untreatable on the international basis unless new drugs become available. An antibiotic resistance in gonococcus has been noted beginning in 1940s against sulfonamides. Since then, resistance has rapidly emerged to penicillins, tetracyclines, macrolides, fluoroquinolones, and cephalosporins. Currently, in most nations, the injectable extended-spectrum cephalosporin (ESC), i.e. ceftriaxone based therapy is the only remaining option for gonorrhea. Based on the WHO and the US-CDC recommendations, countries are increasingly using a combination of cephalosporin and azithromycin for the treatment of gonorrhoea. Azithromycin revolutionized gonoccocal therapy as it shortened treatment time by more than half from 7 to 14 days and improved patient compliance due to high tissue levels and long half-life. However, constantly emerging reports from different parts of the globe showed that N. gonorrhoeae is developing significant level of resistance against azithromycin, and so far more than 33% level of resistance was reported. Two strategies have been commonly implicated in gonococcal resistance against azithromycin: over expression of an efflux pump (due to mutations at mtrR coding region) and decreased antimicrobial affinity (due to mutations in genes encoding the 23S ribosomal subunit). CONCLUSIONS With no alternative antimicrobial treatment options for gonorrhoea and only a few new drugs in the development pipeline, it is necessary to monitor drug resistance and optimize treatment regimens regularly. Moreover, investigations for novel drugs should be wired.
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Affiliation(s)
- Awoke Derbie
- Department of Medical Microbiology, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.
- Centre for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), Addis Ababa University, Bahir Dar, Ethiopia.
- Department of Health Biotechnology, Biotechnology Research Institute, Bahir Dar University, Bahir Dar, Ethiopia.
| | - Daniel Mekonnen
- Department of Medical Microbiology, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
- Department of Health Biotechnology, Biotechnology Research Institute, Bahir Dar University, Bahir Dar, Ethiopia
| | - Yimtubezinash Woldeamanuel
- Centre for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), Addis Ababa University, Bahir Dar, Ethiopia
- Department of Medical Microbiology, Immunology and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Tamrat Abebe
- Department of Medical Microbiology, Immunology and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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10
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Workneh M, Hamill MM, Kakooza F, Mande E, Wagner J, Mbabazi O, Mugasha R, Kajumbula H, Walwema R, Zenilman J, Musinguzi P, Kyambadde P, Lamorde M, Manabe YC. Antimicrobial Resistance of Neisseria Gonorrhoeae in a Newly Implemented Surveillance Program in Uganda: Surveillance Report. JMIR Public Health Surveill 2020; 6:e17009. [PMID: 32519969 PMCID: PMC7315362 DOI: 10.2196/17009] [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] [Received: 11/15/2019] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Neisseria gonorrhoeae (commonly known as gonorrhea) has developed resistance to all first-line therapy in Southeast Asia. East Africa has historically had absent or rudimentary gonorrhea surveillance programs and, while the existence of antimicrobial-resistant gonorrhea is recognized, the extent of its resistance is largely unknown. In 2016, the World Health Organization's Enhanced Gonococcal Antimicrobial Surveillance Program (EGASP) was initiated in Uganda to monitor resistance trends. OBJECTIVE This study characterizes gonorrhea and antibiotic resistance in a large surveillance program of men with urethral discharge syndrome from Kampala, Uganda. METHODS Men attending sentinel clinics with urethritis provided demographic information, behavior data, and a urethral swab in line with the World Health Organization's EGASP protocols for culture, identification, and antibiotic-sensitivity testing using 2 methods-disk diffusion (Kirby-Bauer test) and Etest (BioMérieux Inc). A subset of samples underwent detailed antimicrobial resistance testing. RESULTS Of 639 samples collected from September 2016 to February 2018, 400 (62.6%) were culture-positive though 414 (64.8%) had microscopic evidence of gonorrhea. The mean age of the men from whom the samples were collected was 26.9 (SD 9.6) years and 7.2% (46/639) reported having HIV. There was high-level resistance to ciprofloxacin, tetracycline, and penicillin (greater than 90%) by Kirby-Bauer disk diffusion and 2.1% (4/188) had reduced azithromycin sensitivity by Etest. Of the early isolates that underwent detailed characterization, 60.3% (70/116) were culture-positive, 94% (66/69) isolates were either ciprofloxacin-resistant or ciprofloxacin-intermediate by Etest, 96% (65/68) were azithromycin-sensitive, and 96% (66/69) were gentamicin-sensitive. Resistance profiles were comparable between methods except for ceftriaxone (disk diffusion: 68/69, 99%; Etest: 67/69, 97%) and for gentamicin (disk diffusion: 2/8, 25%; Etest: 66/69, 96%) sensitivity. CONCLUSIONS This is the first report from a systematic gonorrhea surveillance program in Uganda. Findings demonstrated resistance or increased minimum inhibitory concentration to all key antigonococcal antibiotics. There was evidence of poor antibiotic stewardship, near-universal resistance to several antibiotics, and emerging resistance to others. Individuals in the population sampled were at exceptionally high risk of STI and HIV infection requiring intervention. Ongoing surveillance efforts to develop interventions to curtail antimicrobial-resistant gonorrhea are needed.
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Affiliation(s)
- Meklit Workneh
- Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, United States
| | - Matthew M Hamill
- Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, United States
| | | | | | - Jessica Wagner
- Bayview Pediatric Unit, Johns Hopkins University, Baltimore, MD, United States
| | | | | | | | | | - Jonathan Zenilman
- Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, United States
| | - Patrick Musinguzi
- AIDS Control Program, Division of Sexually Transmitted Infections, Ministry of Health, Kampala, Uganda
| | - Peter Kyambadde
- AIDS Control Program, Division of Sexually Transmitted Infections, Ministry of Health, Kampala, Uganda
| | | | - Yukari C Manabe
- Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, United States.,Infectious Disease Institute, Kampala, Uganda
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11
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Fentaw S, Abubeker R, Asamene N, Assefa M, Bekele Y, Tigabu E. Antimicrobial susceptibility profile of Gonococcal isolates obtained from men presenting with urethral discharge in Addis Ababa, Ethiopia: Implications for national syndromic treatment guideline. PLoS One 2020; 15:e0233753. [PMID: 32479537 PMCID: PMC7263590 DOI: 10.1371/journal.pone.0233753] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 05/13/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Neisseria gonorrhoeae (gonococcus) is the etiologic agent for the sexually transmitted Infection gonorrhea, a disease with a significant global public health impact. The treatment regimen for gonorrhea has been changed frequently over the past few decades due to the organism's propensity for developing antibiotic resistance. This study investigated antimicrobial susceptibility patterns of quinolones, third-generation cephalosporin, and other relevant antimicrobials found in N. gonorrhoeae isolated from men presenting with urethral discharge at selected healthcare facilities in Addis Ababa, Ethiopia, with the aim of revising the national treatment regimen based on the information generated from this study. METHODS A total of 599 male patients presenting with urethral discharge were included in the current study. Urethral discharge specimens were cultured on Modified Thayer Martín media and suspected gonococcal colonies were confirmed using Oxidase and Superoxol tests followed by identification through a commercial kit (API-NHR). Antimicrobial susceptibility testing was performed by the Kirby-Bauer disc diffusion method using ciprofloxacin (5μg), ceftriaxone (30μg), cefixime (5μg), cefoxitin (30 μg), penicillin (10μg) and spectinomycin (100 μg) on enriched GC agar. Minimum Inhibitory Concentration (MIC) was also carried out using concentration gradient strips (E-tests) of the same antimicrobial agents. RESULTS The prevalence of gonococcal isolates in the current study was 69%. Out of the 361 gonococcal isolates, close to 68% were fluoroquinolone non-susceptible, with 60% resistant and 7% having an intermediate status. However, all tested isolates were susceptible to ceftriaxone. In addition, all of the isolates have shown reduced non-susceptibility to spectinomycin and cefoxitin. CONCLUSION The prevalence of gonococcal isolates in men presenting with urethral discharge at selected healthcare facilities in Addis Ababa, Ethiopia was found to be high. The high level of fluoroquinolone resistance observed in gonococcal isolates recovered in this study necessitates revision of the national syndromic treatment guideline.
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Affiliation(s)
- Surafel Fentaw
- Clinical Bacteriology and Mycology, Ethiopian Public Health Institute Ethiopia, Addis Ababa, Ethiopia
- * E-mail:
| | - Rajiha Abubeker
- Clinical Bacteriology and Mycology, Ethiopian Public Health Institute Ethiopia, Addis Ababa, Ethiopia
| | - Negga Asamene
- Clinical Bacteriology and Mycology, Ethiopian Public Health Institute Ethiopia, Addis Ababa, Ethiopia
| | - Meseret Assefa
- Clinical Bacteriology and Mycology, Ethiopian Public Health Institute Ethiopia, Addis Ababa, Ethiopia
| | - Yonas Bekele
- Center for Cancer Research, National Cancer Institute, National Institute of Health, Bethesda, MD, United States of America
| | - Eyasu Tigabu
- Clinical Bacteriology and Mycology, Ethiopian Public Health Institute Ethiopia, Addis Ababa, Ethiopia
- Global One Health Initiative, The Ohio State University, Columbus, OH, United States of America
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12
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Crucitti T, Belinga S, Fonkoua MC, Abanda M, Mbanzouen W, Sokeng E, Nzouankeu A. Sharp increase in ciprofloxacin resistance of Neisseria gonorrhoeae in Yaounde, Cameroon: analyses of a laboratory database period 2012-2018. Int J STD AIDS 2020; 31:579-586. [PMID: 32316853 DOI: 10.1177/0956462419897227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A previous study conducted in Yaoundé, Cameroon, showed a significant increase in ciprofloxacin-resistant Neisseria gonorrhoeae. Still, ciprofloxacin is the recommended first-line medication for gonorrhoea in Cameroon. We aimed to provide further evidence of increasing resistance of N. gonorrhoeae to ciprofloxacin. We conducted a retrospective study (2012–2018) and retrieved coded patient and specimen real-world data from the Centre Pasteur du Cameroun’s laboratory information system and laboratory worksheets. We included disc diffusion method results for tetracycline, azithromycin, and spectinomycin, and minimal inhibitory concentrations obtained by E-test for ciprofloxacin, ceftriaxone, and benzylpenicillin. A total of 449 N. gonorrhoeae were isolated; a higher proportion of them presented resistance to ciprofloxacin (64.4%), benzylpenicillin (80.1%), and tetracycline (58.4%). The resistance to ciprofloxacin increased significantly (p < 0.0001) from 15.0% in 2012 to 79.5% in 2018. Since 2016 a significant decrease (p = 0.002) in resistance to benzylpenicillin occurred and the resistance to tetracycline remained stable. The level of resistance to ceftriaxone (1.8%), azithromycin (2.1%), and spectinomycin (2.0%) was low. Our study confirms that ciprofloxacin is not recommended as a first-line treatment for gonorrhoea. It also illustrates the urgent need to establish a robust and sustainable gonococcal antimicrobial surveillance programme to guide national treatment guidelines in order to control gonorrhoea in Cameroon.
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Affiliation(s)
- T Crucitti
- Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - S Belinga
- Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - M C Fonkoua
- Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - M Abanda
- Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - W Mbanzouen
- Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - E Sokeng
- Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - A Nzouankeu
- Centre Pasteur du Cameroun, Yaounde, Cameroon
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13
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Sexually transmitted infections among African women: an opportunity for combination sexually transmitted infection/HIV prevention. AIDS 2020; 34:651-658. [PMID: 32167988 DOI: 10.1097/qad.0000000000002472] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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14
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Building knowledge and evidence base on antimicrobial resistance in Africa, through ‘One Health’ based surveillance. CLINICAL EPIDEMIOLOGY AND GLOBAL HEALTH 2020. [DOI: 10.1016/j.cegh.2019.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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15
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Establishment of a Gonococcal Antimicrobial Surveillance Programme, in Accordance With World Health Organization Standards, in Côte d'Ivoire, Western Africa, 2014-2017. Sex Transm Dis 2020; 46:179-184. [PMID: 30461598 DOI: 10.1097/olq.0000000000000943] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Antimicrobial resistance (AMR) in Neisseria gonorrhoeae is compromising the treatment of gonorrhea globally. Recent AMR data are extremely limited in Africa, and mainly totally lacking in Western Africa, including Côte d'Ivoire. This study (i) established a quality-assured gonococcal antimicrobial surveillance program, according to World Health Organization quality criteria, (ii) investigated the AMR to 8 therapeutic antimicrobials in gonococcal isolates from 2014 to 2017, and (iii) provided evidence for updating the National Sexually Transmitted Disease Syndromic Management Guidelines in Côte d'Ivoire. METHODS During 2014 to 2017, gonococcal isolates were obtained from sexually active symptomatic or asymptomatic males and females in 14 sites in Côte d'Ivoire. It was a special focus on symptomatic males, and their sexual partners, due to the higher culture positivity rates in symptomatic males. Patient metadata were collected, including age, gender, sexual orientation, and symptoms. Minimum inhibitory concentrations of 8 antimicrobials were determined by Etest and interpreted using European Committee on Antimicrobial Susceptibility Testing breakpoints. β-lactamase production was detected using cefinase disks. RESULTS The level of resistance, examining 212 gonococcal isolates, was as follows: 84.9% to tetracycline, 68.9% to benzylpenicillin, 62.7% to ciprofloxacin, 6.1% to azithromycin, and 1.4% to gentamicin. All isolates were susceptible to ceftriaxone, cefixime and spectinomycin. CONCLUSIONS We provide the first gonococcal AMR data, quality assured according to World Health Organization standards, from Côte d'Ivoire since more than 20 years. The high ciprofloxacin resistance, which informed a revision of the national syndromic management guideline during study, and relatively high resistance to azithromycin demand an improved gonococcal antimicrobial surveillance program and increased awareness when prescribing treatment in Côte d'Ivoire.
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16
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Attram N, Agbodzi B, Dela H, Behene E, Nyarko EO, Kyei NNA, Larbi JA, Lawson BWL, Addo KK, Newman MJ, Duplessis CA, Adams N, Unemo M, Letizia AG. Antimicrobial resistance (AMR) and molecular characterization of Neisseria gonorrhoeae in Ghana, 2012-2015. PLoS One 2019; 14:e0223598. [PMID: 31600300 PMCID: PMC6786528 DOI: 10.1371/journal.pone.0223598] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 09/24/2019] [Indexed: 12/13/2022] Open
Abstract
Neisseria gonorrhoeae antimicrobial resistance (AMR) surveillance is essential for tracking the emergence and spread of AMR strains in local, national and international populations. This is crucial for developing or refining treatment guidelines. N. gonorrhoeae multiantigen sequence typing (NG-MAST) is beneficial for describing the molecular epidemiology of gonococci at national and international levels. Elucidation of AMR determinants to β-lactam drugs, is a means of monitoring the development of resistance. In Ghana, little is known about the current gonococcal AMR prevalence and no characterization of gonococcal isolates has been previously performed. In this study, gonococcal isolates (n = 44) collected from five health facilities in Ghana from 2012 to 2015, were examined using AMR testing, NG-MAST and sequencing of penA. High rates of resistance were identified to tetracycline (100%), benzylpenicillin (90.9%), and ciprofloxacin (81.8%). One isolate had a high cefixime MIC (0.75 μg/ml). Twenty-eight NG-MAST sequence types (STs) were identified, seventeen of which were novel. The isolate with the high cefixime MIC contained a mosaic penA-34 allele and belonged to NG-MAST ST1407, an internationally spreading multidrug-resistant clone that has accounted for most cefixime resistance in many countries. In conclusion, AMR testing, NG-MAST, and sequencing of the AMR determinant penA, revealed high rates of resistance to tetracycline, benzylpenicillin, and ciprofloxacin; as well as a highly diverse population of N. gonorrhoeae in Ghana. It is imperative to continue with enhanced AMR surveillance and to understand the molecular epidemiology of gonococcal strains circulating in Ghana and other African countries.
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Affiliation(s)
- Naiki Attram
- US Naval Medical Research Unit Number Three, Ghana Laboratory, Legon, Ghana
- Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana
- * E-mail: ,
| | - Bright Agbodzi
- US Naval Medical Research Unit Number Three, Ghana Laboratory, Legon, Ghana
- Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana
| | - Helena Dela
- US Naval Medical Research Unit Number Three, Ghana Laboratory, Legon, Ghana
- Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana
| | - Eric Behene
- US Naval Medical Research Unit Number Three, Ghana Laboratory, Legon, Ghana
- Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana
| | | | | | - John A. Larbi
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Bernard W. L. Lawson
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Kennedy K. Addo
- Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana
| | - Mercy J. Newman
- Department of Medical Microbiology, School of Biomedical and Allied Health Science, College of Health Sciences, University of Ghana, Accra, Ghana
| | | | - Nehkonti Adams
- US Naval Medical Research Unit Number Three, Ghana Laboratory, Legon, Ghana
| | - Magnus Unemo
- WHO Collaborating Centre for Gonorrhoea and other STIs, National Reference Laboratory for STIs, Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Andrew G. Letizia
- US Naval Medical Research Unit Number Three, Ghana Laboratory, Legon, Ghana
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17
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Ingabire R, Parker R, Nyombayire J, Ko JE, Mukamuyango J, Bizimana J, Price MA, Laufer D, Tichacek A, Wall K, Allen S, Karita E. Female sex workers in Kigali, Rwanda: a key population at risk of HIV, sexually transmitted infections, and unplanned pregnancy. Int J STD AIDS 2019; 30:557-568. [PMID: 30727831 PMCID: PMC6512058 DOI: 10.1177/0956462418817050] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/12/2018] [Indexed: 12/17/2022]
Abstract
Female sex workers (FSWs) were recruited from known hotspots in Kigali, Rwanda, and offered free, anonymous human immunodeficiency virus (HIV) counseling and testing, diagnosis and treatment of sexually transmitted infections (STIs) and long-acting reversible contraception (LARC). From September 2012 to March 2015, 1168 FSWs sought services, including 587 (50%) who were HIV-positive. More than 90% had previously tested for HIV, and 26% who reported previously testing negative had seroconverted. Of the 349 who already knew their HIV-positive status, 74% were on antiretroviral treatment. The prevalence of serologic syphilis was 43% in HIV-positive and 19% in HIV-negative FSWs (p < 0.0001), and Trichomonas vaginalis was found in vaginal wet mounts in 21% of HIV-positive and 13% of HIV-negative FSWs (p < 0.0001). Signs and symptoms of STIs were found in 35% of HIV-positive compared with 21% of HIV-negative FSWs (p < 0.0001). Only one-third reported consistent condom use in the last month. Modern contraceptive use was reported by 43% of HIV-positive and 56% of HIV-negative FSWs (p < 0.0001). Current pregnancy was reported by 4% of HIV-positive and 6% of HIV-negative FSWs (p = 0.0409). Despite Rwanda's successes with preventing 70% of new infections in the general population through nationwide couples' testing in antenatal clinics, prevention and timely treatment in key populations including FSWs are lacking. The prevalence of HIV - including many new cases - and STIs among FSWs in Kigali is high and condom and contraceptive use are low. Tailored and integrated HIV/STIs and family planning programs are urgently needed for FSWs.
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Affiliation(s)
- Rosine Ingabire
- Projet San Francisco, Rwanda Zambia HIV Research Group, Kigali,
Rwanda
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Department of Pathology &
Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA,
USA
| | - Julien Nyombayire
- Projet San Francisco, Rwanda Zambia HIV Research Group, Kigali,
Rwanda
| | - Jasmine E Ko
- Rwanda Zambia HIV Research Group, Department of Pathology &
Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA,
USA
| | | | - Jean Bizimana
- Projet San Francisco, Rwanda Zambia HIV Research Group, Kigali,
Rwanda
| | - Matt A Price
- International AIDS Vaccine Initiative, New York, NY, USA
- Department of Epidemiology and Biostatistics, University of
California at San Francisco, San Francisco, CA, USA
| | - Dagna Laufer
- International AIDS Vaccine Initiative, New York, NY, USA
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Department of Pathology &
Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA,
USA
| | - Kristin Wall
- Department of Epidemiology, Rollins School of Public Health,
Emory University, Atlanta, GA, USA
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Department of Pathology &
Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA,
USA
| | - Etienne Karita
- Projet San Francisco, Rwanda Zambia HIV Research Group, Kigali,
Rwanda
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18
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Mabonga E, Parkes-Ratanshi R, Riedel S, Nabweyambo S, Mbabazi O, Taylor C, Gaydos C, Manabe YC. Complete ciprofloxacin resistance in gonococcal isolates in an urban Ugandan clinic: findings from a cross-sectional study. Int J STD AIDS 2018; 30:256-263. [PMID: 30392463 DOI: 10.1177/0956462418799017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Antimicrobial resistance (AMR) to gonorrhoea is a threat to global health security. There have been concerns expressed that countries with high rates of disease have poor surveillance. The objectives of the study were to determine the AMR patterns of Neisseria gonorrhoeae clinical isolates to antimicrobial agents in patients with HIV or high risk of HIV acquisition, to compare the concordance of disk diffusion and agar dilution as methods for determining AMR to N. gonorrhoeae, and to describe methodological challenges to carrying out AMR testing. The study was conducted at an HIV outpatient service for at-risk populations and an outreach clinic for commercial sex workers in Kampala. Patients were offered a sexually transmitted infection screen using a polymerase chain reaction (PCR)-based assay. Samples positive for gonorrhoea were cultured. Antimicrobial susceptibility testing was performed using disk diffusion and isolates were sent to a reference laboratory for agar dilution direct susceptibility testing. Five hundred and seventy-five patients were screened. There were 33 (5.7%) patients with gonorrhoea detected by PCR. Of the 16 viable N. gonorrhoeae isolates, 100% were resistant to ciprofloxacin and tetracycline by disk diffusion and 31% exhibited reduced susceptibility to ceftriaxone and cefixime. By agar dilution, 100% of isolates were resistant to ciprofloxacin and all isolates were susceptible to ceftriaxone and cefixime. There was concordance between disk diffusion and agar dilution for ciprofloxacin and tetracycline resistance and a significant discordance for third-generation cephalosporins. More than half the women with gonorrhoea were asymptomatic and represent a potential reservoir for ongoing transmission. AMR testing of N. gonorrhoeae isolates is needed to ensure optimal treatment and prevention of antibiotic resistance progression.
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Affiliation(s)
- Emily Mabonga
- 1 Waldron Sexual Health Centre, Lewisham and Greenwich NHS Trust, London, UK
| | - Rosalind Parkes-Ratanshi
- 2 Cambridge Institute of Public Health, University of Cambridge, Cambridge, UK.,3 Infectious Disease Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Stefan Riedel
- 4 Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Sheila Nabweyambo
- 3 Infectious Disease Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Olive Mbabazi
- 3 Infectious Disease Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | | | - Charlotte Gaydos
- 6 Division of Infectious Diseases, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Yukari C Manabe
- 3 Infectious Disease Institute, Makerere University College of Health Sciences, Kampala, Uganda.,6 Division of Infectious Diseases, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
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19
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Hardick J, Crowell TA, Lombardi K, Akintunde A, Odeyemi S, Ivo A, Eluwa G, Njab J, Baral SD, Nowak RG, Quinn TC, Barbian K, Anzick S, Adebajo S, Charurat ME, Ake J, Gaydos CA. Molecular screening for Neisseria gonorrhoeae antimicrobial resistance markers in Nigerian men who have sex with men and transgender women. Int J STD AIDS 2018; 29:1273-1281. [PMID: 29969978 DOI: 10.1177/0956462418780050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Antimicrobial-resistant Neisseria gonorrhoeae (NG) is a global public health issue that threatens effectiveness of current treatments of NG. Increased use of nucleic acid amplification tests (NAATs) in lieu of cultures makes obtaining clinical isolates for susceptibility testing difficult and samples collected in commercial transport buffer for NAATs do not preserve viable organism, while molecular methods of assessing antibiotic susceptibility do not require viable organism. We evaluated 243 NG-positive samples in Aptima transport media including urine, oral, and rectal swabs from Nigerian men who have sex with men for markers to penicillinase-producing NG, ciprofloxacin ( GyrA and ParC mutations), and extended spectrum cephalosporins (ESCs, PenA mosaic [allele X], PonA, mtrR, PorB mutations) by real-time PCR. NG DNA was recovered in 75% (183/243) of samples. Of these, 93% (171/183) were positive for at least one resistance marker. We observed a prevalence of dual resistance markers to penicillin and ciprofloxacin at 46.2% (79/171). Six percent of samples (10/171) tested positive for the PenA mosaic (allele X) ESC marker. These data indicate that antibiotic-resistant NG is common in Nigeria. Laboratory and clinical capacity building in Nigeria should include development of methods to culture NG and determine antimicrobial susceptibility.
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Affiliation(s)
- Justin Hardick
- 1 Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Trevor A Crowell
- 2 U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA.,3 Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
| | - Kara Lombardi
- 2 U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA.,3 Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
| | - Akindiran Akintunde
- 2 U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA.,4 Henry M. Jackson Foundation for the Advancement of Military Medicine, Abuja, Nigeria
| | - Sunday Odeyemi
- 2 U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA.,4 Henry M. Jackson Foundation for the Advancement of Military Medicine, Abuja, Nigeria
| | - Andrew Ivo
- 2 U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA.,4 Henry M. Jackson Foundation for the Advancement of Military Medicine, Abuja, Nigeria
| | | | - Jean Njab
- 5 Population Council Nigeria, Abuja, Nigeria
| | - Stefan D Baral
- 6 Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Rebecca G Nowak
- 7 Institute of Human Virology, University of Maryland, Baltimore, MD, USA
| | - Thomas C Quinn
- 1 Johns Hopkins University School of Medicine, Baltimore, MD, USA.,8 Division of Intramural Research, NIAID, NIH, Bethesda, MD, USA
| | - Kent Barbian
- 9 Rocky Mountain National Laboratory (RML), Hamilton, MT, USA
| | - Sarah Anzick
- 9 Rocky Mountain National Laboratory (RML), Hamilton, MT, USA
| | | | | | - Julie Ake
- 2 U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA
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Tadesse BT, Ashley EA, Ongarello S, Havumaki J, Wijegoonewardena M, González IJ, Dittrich S. Antimicrobial resistance in Africa: a systematic review. BMC Infect Dis 2017; 17:616. [PMID: 28893183 PMCID: PMC5594539 DOI: 10.1186/s12879-017-2713-1] [Citation(s) in RCA: 260] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 09/04/2017] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Antimicrobial resistance (AMR) is widely acknowledged as a global problem, yet in many parts of the world its magnitude is still not well understood. This review, using a public health focused approach, aimed to understand and describe the current status of AMR in Africa in relation to common causes of infections and drugs recommended in WHO treatment guidelines. METHODS PubMed, EMBASE and other relevant databases were searched for recent articles (2013-2016) in accordance with the PRISMA guidelines. Article retrieval and screening were done using a structured search string and strict inclusion/exclusion criteria. Median and interquartile ranges of percent resistance were calculated for each antibiotic-bacterium combination. RESULTS AMR data was not available for 42.6% of the countries in the African continent. A total of 144 articles were included in the final analysis. 13 Gram negative and 5 Gram positive bacteria were tested against 37 different antibiotics. Penicillin resistance in Streptococcus pneumoniae was reported in 14/144studies (median resistance (MR): 26.7%). Further 18/53 (34.0%) of Haemophilus influenza isolates were resistant to amoxicillin. MR of Escherichia coli to amoxicillin, trimethoprim and gentamicin was 88.1%, 80.7% and 29.8% respectively. Ciprofloxacin resistance in Salmonella Typhi was rare. No documented ceftriaxone resistance in Neisseria gonorrhoeae was reported, while the MR for quinolone was 37.5%. Carbapenem resistance was common in Acinetobacter spp. and Pseudomonas aeruginosa but uncommon in Enterobacteriaceae. CONCLUSION Our review highlights three important findings. First, recent AMR data is not available for more than 40% of the countries. Second, the level of resistance to commonly prescribed antibiotics was significant. Third, the quality of microbiological data is of serious concern. Our findings underline that to conserve our current arsenal of antibiotics it is imperative to address the gaps in AMR diagnostic standardization and reporting and use available information to optimize treatment guidelines.
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Affiliation(s)
- Birkneh Tilahun Tadesse
- 0000 0001 1507 3147grid.452485.aFoundation for Innovative New Diagnostics (FIND), Campus Biotech Building B2 Level 0, 9 Chemin des Mines, 1202 Geneva, Switzerland ,0000 0000 8953 2273grid.192268.6College of Medicine and Health Sciences, Department of Pediatrics, Hawassa University, Hawassa, Ethiopia ,grid.463322.2Special Programme for Research & Training in Tropical Diseases (TDR), World Health Organization, Avenue Appia 20, 1211, 27 Geneva, Switzerland
| | | | - Stefano Ongarello
- 0000 0001 1507 3147grid.452485.aFoundation for Innovative New Diagnostics (FIND), Campus Biotech Building B2 Level 0, 9 Chemin des Mines, 1202 Geneva, Switzerland
| | - Joshua Havumaki
- 0000 0001 1507 3147grid.452485.aFoundation for Innovative New Diagnostics (FIND), Campus Biotech Building B2 Level 0, 9 Chemin des Mines, 1202 Geneva, Switzerland
| | - Miranga Wijegoonewardena
- 0000 0001 1507 3147grid.452485.aFoundation for Innovative New Diagnostics (FIND), Campus Biotech Building B2 Level 0, 9 Chemin des Mines, 1202 Geneva, Switzerland
| | - Iveth J. González
- 0000 0001 1507 3147grid.452485.aFoundation for Innovative New Diagnostics (FIND), Campus Biotech Building B2 Level 0, 9 Chemin des Mines, 1202 Geneva, Switzerland
| | - Sabine Dittrich
- 0000 0001 1507 3147grid.452485.aFoundation for Innovative New Diagnostics (FIND), Campus Biotech Building B2 Level 0, 9 Chemin des Mines, 1202 Geneva, Switzerland
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Ampaire L, Muhindo A, Orikiriza P, Mwanga-Amumpaire J, Bebell L, Boum Y. A review of antimicrobial resistance in East Africa. Afr J Lab Med 2016; 5:432. [PMID: 28879114 PMCID: PMC5436405 DOI: 10.4102/ajlm.v5i1.432] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 06/24/2016] [Indexed: 11/11/2022] Open
Abstract
Background and objectives Knowledge of local and regional antimicrobial resistance (AMR) is important for clinical decision making. However, surveillance capacity for AMR is lacking throughout East Africa, and current AMR data are sparse. We sought to address this gap by summarising all available high-quality data on AMR in the East Africa region. Method We searched the PubMed database and African Journals Online archives in April and May 2015 using the search term ‘antimicrobial resistance AND sub-Saharan Africa’ to find articles published from 2005 onwards. Only full-text articles in English were included. Results We included 12 published articles in our analysis. Most articles were on bloodstream infections, hospital-based and cross-sectional in design; a majority described either community- or hospital-acquired infections. High levels of AMR to commonly-used antibiotics were reported, including 50% – 100% resistance to ampicillin and cotrimoxazole infections, emerging resistance to gentamicin (20% – 47%) and relatively high levels of resistance to ceftriaxone (46% – 69%) among Gram-negative infections. Much of the resistance was reported to be in Klebsiella species and Escherichia coli. Among Gram-positive infections, extensive resistance was reported to ampicillin (100%), gentamicin and ceftriaxone (50% – 100%), with methicillin-resistant Staphylococcus aureus prevalence ranging from 2.6% – 4.0%. Conclusion Overall, bacterial resistance was reported among commonly-used antibiotics (ampicillin, gentamicin and ceftriaxone), raising concern that these antibiotics may no longer be useful for treating moderate or severe bacterial infections in East Africa. Thus, empirical treatment of bacterial infections needs to be reconsidered and guided by local assessment of AMR. Improvements in the limited amount of quality data and lack of harmonisation in assessing the burden of AMR are also needed.
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Affiliation(s)
- Lucas Ampaire
- Department of Medical Laboratory Sciences, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Abraham Muhindo
- Department of Medical Laboratory Sciences, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Patrick Orikiriza
- Epicentre Mbarara Research Centre, Mbarara, Uganda.,Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | | | - Lisa Bebell
- Massachusetts General Hospital, Boston, Massachusetts, United States
| | - Yap Boum
- Epicentre Mbarara Research Centre, Mbarara, Uganda
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Muldoon KA. A systematic review of the clinical and social epidemiological research among sex workers in Uganda. BMC Public Health 2015; 15:1226. [PMID: 26652160 PMCID: PMC4674940 DOI: 10.1186/s12889-015-2553-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 12/01/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In response to the high burden of disease among sex workers and their position as a population heavily affected by the HIV epidemic, there has been a growing body of literature investigating the prevalence and risk factors associated with HIV risk among sex workers. To contextualize and summarize the existing research evidence base, a systematic review was conducted to synthesize the epidemiological literature on sex workers in Uganda. METHODS Database selection and search strategy development followed the Cochrane Collaboration's standards for conducting systematic review searches. All studies that included sex workers as the primary research participants were included in the review. The search was then geographically restricted to the country of Uganda. Items were identified from 18 databases (grey and peer-review) on March 10-11, 2015. RESULTS A total of 484 articles were retrieved from the database search. After removal of duplicates, a total of 353 articles were screened for eligibility and 64 full-text articles were assessed. The final review included 24 studies with quantitative methodology conducted among sex workers in Uganda. The HIV prevalence among female sex workers ranged from 32.4-52.0 % and between 8.2-9.0 % had multiple HIV infections. Both multi-drug resistance to antiretroviral therapy (2.6 %) and antibiotics (83.1 %) were observed. Between 33.3-55.1 % reported inconsistent condom use in the past month. In the previous 6 months, over 80 % of sex workers experienced client-perpetrated violence and 18 % experienced intimate partner violence. Over 30 % had a history of extreme war-related trauma. CONCLUSIONS There was limited information on socio-structural factors that affect sex workers' commercial working environments in Uganda, including the role of policing and criminalization, as well as the prevalence and factors associated with violence. The majority of the existing evidence is based in Kampala, highlighting a need for information on sex work in other regions of Uganda. Additionally, there is limited information on features of the non-commercial components of sex workers' lives as well as the services needed to reduce risks outside of the sex industry.
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Affiliation(s)
- Katherine A Muldoon
- School of Population and Public Health, Faculty of Medicine, University of British Columbia, 2206 East Mall, Vancouver, BC, V6T 1Z9, Canada.
- Ottawa Hospital Research Institute, University of Ottawa, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada.
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Etiology and antimicrobial susceptibility of pathogens responsible for urethral discharge among men in Harare, Zimbabwe. Sex Transm Dis 2015; 41:713-7. [PMID: 25581806 DOI: 10.1097/olq.0000000000000204] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Periodic etiological surveillance of sexually transmitted infection (STI) syndromes is required to validate treatment algorithms used to control STIs. However, such surveys have not been performed in Zimbabwe over the past decade. METHODS A cross-sectional study design was used to determine the prevalence of the key STI etiological agents causing male urethral discharge (MUD). Urethral swab specimens were collected for molecular analysis and Neisseria gonorrhoeae isolation from consenting men 18 years and older who presented with MUD to the 12 clinics in Harare, Zimbabwe, between November 2010 and May 2011. A validated in-house multiplex polymerase chain reaction assay was used to detect the presence of N. gonorrhoeae, Chlamydia trachomatis, Trichomonas vaginalis, and Mycoplasma genitalium. Gonococci were cultured on selective media, and antimicrobial susceptibilities were determined locally for ciprofloxacin, kanamycin, ceftriaxone, and cefixime using Etest strips, and minimum inhibitory concentrations were reported using defined breakpoints. RESULTS Among 130 participants, N. gonorrhoeae was the most frequent pathogen detected (106; 82.8%), followed by C. trachomatis (15; 11.7%), M. genitalium (6; 4.7%), and T. vaginalis (2; 1.6%). Four (6.1%) of the 66 gonococci isolated were resistant to fluoroquinolones, whereas all viable isolates were susceptible to kanamycin, cefixime, and ceftriaxone. CONCLUSIONS Gonorrhea is the most important cause of MUD in men in Harare, and our study highlights the emergence of fluoroquinolone-resistant N. gonorrhoeae. Further STI surveys are required in other regions of Zimbabwe to obtain a nationally representative picture of gonococcal burden and antimicrobial resistance among MUD patients.
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Characterization of the novel DNA gyrase inhibitor AZD0914: low resistance potential and lack of cross-resistance in Neisseria gonorrhoeae. Antimicrob Agents Chemother 2014; 59:1478-86. [PMID: 25534723 DOI: 10.1128/aac.04456-14] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The unmet medical need for novel intervention strategies to treat Neisseria gonorrhoeae infections is significant and increasing, as rapidly emerging resistance in this pathogen is threatening to eliminate the currently available treatment options. AZD0914 is a novel bacterial gyrase inhibitor that possesses potent in vitro activities against isolates with high-level resistance to ciprofloxacin and extended-spectrum cephalosporins, and it is currently in clinical development for the treatment of N. gonorrhoeae infections. The propensity to develop resistance against AZD0914 was examined in N. gonorrhoeae and found to be extremely low, a finding supported by similar studies with Staphylococcus aureus. The genetic characterization of both first-step and second-step mutants that exhibited decreased susceptibilities to AZD0914 identified substitutions in the conserved GyrB TOPRIM domain, confirming DNA gyrase as the primary target of AZD0914 and providing differentiation from fluoroquinolones. The analysis of available bacterial gyrase and topoisomerase IV structures, including those bound to fluoroquinolone and nonfluoroquinolone inhibitors, has allowed the rationalization of the lack of cross-resistance that AZD0914 shares with fluoroquinolones. Microbiological susceptibility data also indicate that the topoisomerase inhibition mechanisms are subtly different between N. gonorrhoeae and other bacterial species. Taken together, these data support the progression of AZD0914 as a novel treatment option for the oral treatment of N. gonorrhoeae infections.
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Mitigating the emergence and spread of multidrug- and extensively drug-resistant gonorrhea: is there sufficient support in resource-poor settings in Africa? Sex Transm Dis 2014; 41:238-9. [PMID: 24622634 DOI: 10.1097/olq.0000000000000117] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kaleebu P, Kamali A, Seeley J, Elliott AM, Katongole-Mbidde E. The Medical Research Council (UK)/Uganda Virus Research Institute Uganda Research Unit on AIDS--'25 years of research through partnerships'. Trop Med Int Health 2014; 20:E1-10. [PMID: 25354929 PMCID: PMC4529486 DOI: 10.1111/tmi.12415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
For the past 25 years, the Medical Research Council/Uganda Virus Research Institute Uganda Research Unit on AIDS has conducted research on HIV-1, coinfections and, more recently, on non-communicable diseases. Working with various partners, the research findings of the Unit have contributed to the understanding and control of the HIV epidemic both in Uganda and globally, and informed the future development of biomedical HIV interventions, health policy and practice. In this report, as we celebrate our silver jubilee, we describe some of these achievements and the Unit's multidisciplinary approach to research. We also discuss the future direction of the Unit; an exemplar of a partnership that has been largely funded from the north but led in the south.
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Affiliation(s)
- P Kaleebu
- Medical Research Council/Uganda Virus Research Institute (MRC/UVRI) Uganda Research Unit on AIDS, Entebbe, Uganda; Uganda Virus Research Institute, Entebbe, Uganda; London School of Hygiene and Tropical Medicine, London, UK
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