The distribution of Blastocystis subtypes in isolates from Qatar
<p>Blastocystis is a common single-celled intestinal parasite of humans and other animals comprising at least 17 genetically distinct small subunit ribosomal RNA lineages (subtypes (STs)), nine of which have been found in humans. The geographic distribution of Blastocystis subtypes is variable...
محفوظ في:
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| مؤلفون آخرون: | , , , |
| منشور في: |
2015
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إضافة وسم
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| _version_ | 1864513511372095488 |
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| author | Marawan Abu-Madi (2816869) |
| author2 | Mahmoud Aly (4512307) Jerzy M. Behnke (7571882) C. Graham Clark (18806875) Hanan Balkhy (3484613) |
| author2_role | author author author author |
| author_facet | Marawan Abu-Madi (2816869) Mahmoud Aly (4512307) Jerzy M. Behnke (7571882) C. Graham Clark (18806875) Hanan Balkhy (3484613) |
| author_role | author |
| dc.creator.none.fl_str_mv | Marawan Abu-Madi (2816869) Mahmoud Aly (4512307) Jerzy M. Behnke (7571882) C. Graham Clark (18806875) Hanan Balkhy (3484613) |
| dc.date.none.fl_str_mv | 2015-09-17T06:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1186/s13071-015-1071-3 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/The_distribution_of_Blastocystis_subtypes_in_isolates_from_Qatar/26018230 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Biological sciences Genetics Biomedical and clinical sciences Medical microbiology Blastocystis Real time-PCR Subtype Small subunit ribosomal DNA Prevalence Genotyping Phylogenetic analysis Qatar |
| dc.title.none.fl_str_mv | The distribution of Blastocystis subtypes in isolates from Qatar |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p>Blastocystis is a common single-celled intestinal parasite of humans and other animals comprising at least 17 genetically distinct small subunit ribosomal RNA lineages (subtypes (STs)), nine of which have been found in humans. The geographic distribution of Blastocystis subtypes is variable, but the subtypes present in Qatar are at present unknown. Stool samples were collected from randomly selected, apparently healthy subjects arriving in Qatar for the first time. Blastocystis subtypes were determined by sequencing of the small subunit rRNA gene (SSU rDNA) PCR products. Phylogenetic analyses were done using Maximum Composite Likelihood method. 71.1 % of samples were positive for Blastocystis infection based on PCR-detection methodology compared to only 6.9 % by microscopy. Prevalence of Blastocystis did not differ between the sexes nor between age classes. However, there was a regional difference in prevalence with subjects arriving from Africa showing the highest (87.6 %), those from Western Asia intermediate (68.6 %) and from Eastern Asia the lowest prevalence (67.6 %). Genetic analysis detected only three STs. ST3 was the most common (69.3 %) and ST2 was the rarest (3.5 %), while ST1 had a prevalence of 27.2 %. ST2 showed a regional variation, being absent from the 64 Western Asian Blastocystis-positive subjects. Both ST1 and ST3 showed significant differences in prevalence between the sexes. This is the first report exploring the distribution of Blastocystis subtypes in our region. We recommend that stool screening via microscopy for the presence of Blastocystis should be abandoned since it is extremely insensitive. In future, the prevalence of Blastocystis infections should be based on PCR methodology and we predict that in the years ahead diagnostic PCR will become the tool of choice. More work is needed to identify the full range of Blastocystis subtypes that circulate in our region.</p><h2>Other Information</h2> <p> Published in: Parasites & Vectors<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1186/s13071-015-1071-3" target="_blank">https://dx.doi.org/10.1186/s13071-015-1071-3</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_99c05eca83da96278372a85541b0210b |
| identifier_str_mv | 10.1186/s13071-015-1071-3 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/26018230 |
| publishDate | 2015 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | The distribution of Blastocystis subtypes in isolates from QatarMarawan Abu-Madi (2816869)Mahmoud Aly (4512307)Jerzy M. Behnke (7571882)C. Graham Clark (18806875)Hanan Balkhy (3484613)Biological sciencesGeneticsBiomedical and clinical sciencesMedical microbiologyBlastocystisReal time-PCRSubtypeSmall subunit ribosomal DNAPrevalenceGenotypingPhylogenetic analysisQatar<p>Blastocystis is a common single-celled intestinal parasite of humans and other animals comprising at least 17 genetically distinct small subunit ribosomal RNA lineages (subtypes (STs)), nine of which have been found in humans. The geographic distribution of Blastocystis subtypes is variable, but the subtypes present in Qatar are at present unknown. Stool samples were collected from randomly selected, apparently healthy subjects arriving in Qatar for the first time. Blastocystis subtypes were determined by sequencing of the small subunit rRNA gene (SSU rDNA) PCR products. Phylogenetic analyses were done using Maximum Composite Likelihood method. 71.1 % of samples were positive for Blastocystis infection based on PCR-detection methodology compared to only 6.9 % by microscopy. Prevalence of Blastocystis did not differ between the sexes nor between age classes. However, there was a regional difference in prevalence with subjects arriving from Africa showing the highest (87.6 %), those from Western Asia intermediate (68.6 %) and from Eastern Asia the lowest prevalence (67.6 %). Genetic analysis detected only three STs. ST3 was the most common (69.3 %) and ST2 was the rarest (3.5 %), while ST1 had a prevalence of 27.2 %. ST2 showed a regional variation, being absent from the 64 Western Asian Blastocystis-positive subjects. Both ST1 and ST3 showed significant differences in prevalence between the sexes. This is the first report exploring the distribution of Blastocystis subtypes in our region. We recommend that stool screening via microscopy for the presence of Blastocystis should be abandoned since it is extremely insensitive. In future, the prevalence of Blastocystis infections should be based on PCR methodology and we predict that in the years ahead diagnostic PCR will become the tool of choice. More work is needed to identify the full range of Blastocystis subtypes that circulate in our region.</p><h2>Other Information</h2> <p> Published in: Parasites & Vectors<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1186/s13071-015-1071-3" target="_blank">https://dx.doi.org/10.1186/s13071-015-1071-3</a></p>2015-09-17T06:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1186/s13071-015-1071-3https://figshare.com/articles/journal_contribution/The_distribution_of_Blastocystis_subtypes_in_isolates_from_Qatar/26018230CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/260182302015-09-17T06:00:00Z |
| spellingShingle | The distribution of Blastocystis subtypes in isolates from Qatar Marawan Abu-Madi (2816869) Biological sciences Genetics Biomedical and clinical sciences Medical microbiology Blastocystis Real time-PCR Subtype Small subunit ribosomal DNA Prevalence Genotyping Phylogenetic analysis Qatar |
| status_str | publishedVersion |
| title | The distribution of Blastocystis subtypes in isolates from Qatar |
| title_full | The distribution of Blastocystis subtypes in isolates from Qatar |
| title_fullStr | The distribution of Blastocystis subtypes in isolates from Qatar |
| title_full_unstemmed | The distribution of Blastocystis subtypes in isolates from Qatar |
| title_short | The distribution of Blastocystis subtypes in isolates from Qatar |
| title_sort | The distribution of Blastocystis subtypes in isolates from Qatar |
| topic | Biological sciences Genetics Biomedical and clinical sciences Medical microbiology Blastocystis Real time-PCR Subtype Small subunit ribosomal DNA Prevalence Genotyping Phylogenetic analysis Qatar |