Impact of the Mycobaterium africanum West Africa 2 Lineage on TB Diagnostics in West Africa: Decreased Sensitivity of Rapid Identification Tests in The Gambia
Publication Date
July 07, 2016
Journal
PLOS Neglected Tropical Diseases
Authors
Boatema Ofori Anyinam, Fatoumatta Kanuteh, Schadrac C. Agbla, Ifedayo Adetifa, et al
Volume
10
Issue
7
Pages
e0004801
DOI
https://dx.plos.org/10.1371/journal.pntd.0004801
Publisher URL
http://journals.plos.org/plosntds/article?id=10.1371%2Fjournal.pntd.0004801
Scopus
84980390901
Mendeley
http://www.mendeley.com/research/impact-mycobaterium-africanum-west-africa-2-lineage-tb-diagnostics-west-africa-decreased-sensitivity
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Mendeley | Further Information

{"title"=>"Impact of the Mycobaterium africanum West Africa 2 Lineage on TB Diagnostics in West Africa: Decreased Sensitivity of Rapid Identification Tests in The Gambia", "type"=>"journal", "authors"=>[{"first_name"=>"Boatema", "last_name"=>"Ofori-Anyinam", "scopus_author_id"=>"57188699637"}, {"first_name"=>"Fatoumatta", "last_name"=>"Kanuteh", "scopus_author_id"=>"57190492315"}, {"first_name"=>"Schadrac C.", "last_name"=>"Agbla", "scopus_author_id"=>"57031985200"}, {"first_name"=>"Ifedayo", "last_name"=>"Adetifa", "scopus_author_id"=>"13609887500"}, {"first_name"=>"Catherine", "last_name"=>"Okoi", "scopus_author_id"=>"57189491502"}, {"first_name"=>"Gregory", "last_name"=>"Dolganov", "scopus_author_id"=>"6701444051"}, {"first_name"=>"Gary", "last_name"=>"Schoolnik", "scopus_author_id"=>"7005149059"}, {"first_name"=>"Ousman", "last_name"=>"Secka", "scopus_author_id"=>"6602090234"}, {"first_name"=>"Martin", "last_name"=>"Antonio", "scopus_author_id"=>"17341912100"}, {"first_name"=>"Bouke C.", "last_name"=>"de Jong", "scopus_author_id"=>"8863850000"}, {"first_name"=>"Florian", "last_name"=>"Gehre", "scopus_author_id"=>"6506726415"}], "year"=>2016, "source"=>"PLoS Neglected Tropical Diseases", "identifiers"=>{"scopus"=>"2-s2.0-84980390901", "sgr"=>"84980390901", "issn"=>"19352735", "doi"=>"10.1371/journal.pntd.0004801", "pmid"=>"27387550", "isbn"=>"1935-2735 (Electronic)\r1935-2727 (Linking)", "pui"=>"611501717"}, "id"=>"5cf84799-44c9-35c3-b0f7-4c0619aabd9d", "abstract"=>"BACKGROUND MPT64 rapid speciation tests are increasingly being used in diagnosis of tuberculosis (TB). Mycobacterium africanum West Africa 2 (Maf 2) remains an important cause of TB in West Africa and causes one third of disease in The Gambia. Since the introduction of MPT64 antigen tests, a higher than expected rate of suspected non-tuberculous mycobacteria (NTM) was seen among AFB smear positive TB suspects, which led us to prospectively assess sensitivity of the MPT64 antigen test in our setting. METHODOLOGY/PRINCIPAL FINDINGS We compared the abundance of mRNA encoded by the mpt64 gene in sputa of patients with untreated pulmonary TB caused by Maf 2 and Mycobacterium tuberculosis (Mtb). Subsequently, prospectively collected sputum samples from presumptive TB patients were inoculated in the BACTEC MGIT 960 System. One hundred and seventy-three acid fast bacilli (AFB)-positive and blood agar negative MGIT cultures were included in the study. Cultures were tested on the day of MGIT positivity with the BD MGIT TBc Identification Test. A random set of positives and all negatives were additionally tested with the SD Bioline Ag MPT64 Rapid. MPT64 negative cultures were further incubated at 37°C and retested until positive. Bacteria were spoligotyped and assigned to different lineages. Maf 2 isolates were 2.52-fold less likely to produce a positive test result and sensitivity ranged from 78.4% to 84.3% at the beginning and end of the recommended 10 day testing window, respectively. There was no significant difference between the tests. We further showed that the decreased rapid test sensitivity was attributable to variations in mycobacterial growth behavior and the smear grades of the patient. CONCLUSIONS/SIGNIFICANCE In areas where Maf 2 is endemic MPT64 tests should be cautiously used and MPT64 negative results confirmed by a second technique, such as nucleic acid amplification tests, to avoid their misclassification as NTMs.", "link"=>"http://www.mendeley.com/research/impact-mycobaterium-africanum-west-africa-2-lineage-tb-diagnostics-west-africa-decreased-sensitivity", "reader_count"=>19, "reader_count_by_academic_status"=>{"Unspecified"=>2, "Professor > Associate Professor"=>1, "Researcher"=>3, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>5, "Student > Master"=>3, "Other"=>1, "Student > Bachelor"=>2, "Lecturer"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>2, "Professor > Associate Professor"=>1, "Researcher"=>3, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>5, "Student > Master"=>3, "Other"=>1, "Student > Bachelor"=>2, "Lecturer"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>2, "Biochemistry, Genetics and Molecular Biology"=>3, "Nursing and Health Professions"=>1, "Agricultural and Biological Sciences"=>2, "Medicine and Dentistry"=>5, "Social Sciences"=>2, "Immunology and Microbiology"=>3, "Psychology"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>5}, "Social Sciences"=>{"Social Sciences"=>2}, "Immunology and Microbiology"=>{"Immunology and Microbiology"=>3}, "Psychology"=>{"Psychology"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>2}, "Nursing and Health Professions"=>{"Nursing and Health Professions"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>3}, "Unspecified"=>{"Unspecified"=>2}}, "reader_count_by_country"=>{"United States"=>1}, "group_count"=>1}

Scopus | Further Information

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2019-08-27 19:05:25 UTC
Target URL
https://api.elsevier.com/content/search/index:SCOPUS?query=DOI(10.1371%2Fjournal.pntd.0004801)
Trace

/app/models/concerns/networkable.rb:21:in `get_result'
/app/models/source.rb:165:in `get_data'
/app/models/retrieval_status.rb:47:in `perform_get_data'
/app/jobs/source_job.rb:52:in `block (2 levels) in perform'
/app/jobs/source_job.rb:51:in `block in perform'
/app/jobs/source_job.rb:35:in `each'
/app/jobs/source_job.rb:35:in `perform'