Clone-based haplotyping of Giardia intestinalis assemblage B human isolates
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F19%3A10393153" target="_blank" >RIV/00216208:11110/19:10393153 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=KWVPKk93jK" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=KWVPKk93jK</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00436-018-6161-7" target="_blank" >10.1007/s00436-018-6161-7</a>
Alternative languages
Result language
angličtina
Original language name
Clone-based haplotyping of Giardia intestinalis assemblage B human isolates
Original language description
The level of genetic variability of Giardia intestinalis clinical isolates is an intensively studied and discussed issue within the scientific community. Our collection of G. intestinalis human isolates includes six in vitro-cultured isolates from assemblage B, with extensive genetic variability. Such variability prevents the precise genotype characterisation by the multi-locus genotyping (MLG) method commonly used for assemblage A. It was speculated that the intra-assemblage variations represent a reciprocal genetic exchange or true mixed infection. Thus, we analysed gene sequences of the molecular clones of the assemblage B isolates, each representing a single DNA molecule (haplotype) to determine whether the polymorphisms are present within individual haplotypes. Our results, which are based on the analysis of three standard genetic markers (bg, gdh, tpi), point to haplotype diversity and show numerous single nucleotide polymorphisms (SNPs) mostly in codon wobble positions. We do not support the recombinatory origin of the detected haplotypes. The point mutations tolerated by mismatch repair are the possible cause for the detected sequence divergence. The precise sub-genotyping of assemblage B will require finding more conservative genes, as the existing ones are hypervariable in most isolates and prevent their molecular and epidemiological characterisation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10600 - Biological sciences
Result continuities
Project
<a href="/en/project/NV15-33369A" target="_blank" >NV15-33369A: Characteristics of isolates of Giardia intestinalis, a causative agent of the most common intestinal protozoan infection, as diagnostic tools</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Parasitology Research
ISSN
0932-0113
e-ISSN
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Volume of the periodical
118
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
355-361
UT code for WoS article
000455551000033
EID of the result in the Scopus database
2-s2.0-85057774943