Genetic characterization of Campylobacter jejuni O:41 isolates in relation with Guillain-Barré syndrome (original) (raw)
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The Journal of Infectious Diseases, 2001
Penner serotypes, such as HS:19, are linked particularly to GBS in some parts of the world, and there is good evidence for restricted genetic diversity in these isolates. However, GBS also occurs after Campylobacter infection due to other serotypes. Therefore, we asked whether Campylobacter jejuni non-HS:19 serotypes associated with GBS have a clonal structure and differ from strains isolated from patients with Campylobacter gastroenteritis. A worldwide selected population of C. jejuni non-HS:19 strains associated with GBS and gastroenteritis was analyzed by use of multilocus enzyme electrophoresis, automated ribotyping, pulsed-field gel electrophoresis, and flagellin gene typing. The results show that these isolates represent a heterogenic population and do not constitute a unique population across serotypes. No epidemiologic marker for GBS-associated strains was identified.
PLoS ONE, 2010
Campylobacter jejuni ICDCCJ07001 (HS:41, ST2993) was isolated from a Guillain-Barré syndrome (GBS) patient during a 36case GBS outbreak triggered by C. jejuni infections in north China in 2007. Sequence analysis revealed that the ICDCCJ07001 genome consisted of 1,664,840 base pairs (bp) and one tetracycline resistance plasmid of 44,084 bp. The GC content was 59.29% and 1,579 and 37 CDSs were identified on the chromosome and plasmid, respectively. The ICDCCJ07001 genome was compared to C. jejuni subsp. jejuni strains 81-176, 81116, NCTC11168, RM1221 and C. jejuni subsp. doylei 269.97. The length and organization of ICDCCJ07001 was similar to that of NCTC11168, 81-176 and 81-116 except that CMLP1 had a reverse orientation in strain ICDCCJ07001. Comparative genomic analyses were also carried out between GBS-associated C. jejuni strains. Thirteen common genes were present in four GBS-associated strains and 9 genes mapped to the LOS cluster and the ICDCCJ07001_pTet (44 kb) plasmid was mosaic in structure. Thirty-seven predicted CDS in ICDCCJ07001_pTet were homologous to genes present in three virulence-associated plasmids in Campylobacter: 81-176_pTet, pCC31 and 81-176_pVir. Comparative analysis of virulence loci and virulence-associated genes indicated that the LOS biosynthesis loci of ICDCCJ07001 belonged to type A, previously reported to be associated with cases of GBS. The polysaccharide capsular biosynthesis (CPS) loci and the flagella modification (FM) loci of ICDCCJ07001 were similar to corresponding sequences of strain 260.94 of similar serotype as strain ICDCCJ07001. Other virulence-associated genes including cadF, peb1, jlpA, cdt and ciaB were conserved between the C. jejuni strains examined.
Guillain‐Barré Syndrome in South Africa Associated with Campylobacter jejuni O:41 Strains
The Journal of Infectious Diseases, 1997
Over a 20-month period, 3 adult and 6 pediatric patients were diagnosed with Guillain-Barré syndrome (GBS) at Groote Schuur and Red Cross Hospitals in Cape Town. All 9 GBS patients had Campylobacter jejuni biotype 2, serotype O:41 in their stools. C. jejuni infection was confirmed by ELISA testing of patient sera. Strains of this sero-biotype are rare: Only 12 such strains, including the GBS-associated strains, were recognized among 776 Campylobacter strains isolated and identified at Red Cross Hospital from March 1994 to October 1995. This is the first known association of C. jejuni biotype 2, serotype O:41 with GBS. Patients infected with this Campylobacter strain had a particularly severe form of the infection, requiring hospitalization and ventilation much longer than GBS patients infected with other Campylobacter species and patients with Campylobacter-negative stools. The O:41 Campylobacter isolates from the GBS patients are identical by phenotypic, serologic, and molecular criteria, and they are clonal. under microaerophilic growth conditions (12% CO 2 , 88% air, 95% Guillain-Barré syndrome (GBS) has been associated with a humidity). variety of preceding infections. However, enteric infections Biotyping and serotyping. Bacteria were identified by use of with Campylobacter appear to be the most common antecedent established procedures, and isolates were biotyped according to event, with evidence of infection rates up to 42% in adults [1] the scheme of Skirrow and Benjamin [4]. Serotyping on the basis and up to 88% in children [2]. We sought to determine the of thermostable somatic (O) antigens was done using the 66 antifrequency of Campylobacter infections among GBS patients sera of Penner's scheme [5] plus an additional 30 antisera to new in Cape Town and to characterize the Campylobacter isolates serotypes not included in Penner's scheme. with regard to biotype and serotype.
Journal of Clinical Microbiology, 2001
Guillain-Barré syndrome (GBS) and Miller-Fisher syndrome (MFS) are correlated with prior infection by Campylobacter jejuni in up to 40% of cases. Nucleotide sequence-based typing of 25 C. jejuni isolates associated with neuropathy permitted robust comparisons with equivalent data from approximately 800 C. jejuni isolates not associated with neuropathy. A total of 13 genetic lineages and 20 flaA short variable region nucleotide sequences were present among the 25 isolates. A minority of isolates (4 of 25) had the flaA short variable region nucleotide sequences that were previously proposed as a marker for GBS-associated isolates. These 4 isolates probably represented the Penner serotype 19 lineage, which has been proposed to have an association with GBS.
Comparative Genomic Analysis of Clinical Strains of Campylobacter jejuni from South Africa
PLoS ONE, 2008
Background: Campylobacter jejuni is a common cause of acute gastroenteritis and is also associated with the post-infectious neuropathies, Guillain-Barré and Miller Fisher syndromes. In the Cape Town area of South Africa, C. jejuni strains with Penner heat-stable (HS) serotype HS:41 have been observed to be overrepresented among cases of Guillain-Barré syndrome. The present study examined the genetic content of a collection of 32 South African C. jejuni strains with different serotypes, including 13 HS:41 strains, that were recovered from patients with enteritis, Guillain-Barré or Miller Fisher syndromes. The sequence-based typing methods, multilocus sequence typing and DNA microarrays, were employed to potentially identify distinguishing features within the genomes of these C. jejuni strains with various disease outcomes.
The application of genotyping techniques to the epidemiological analysis of Campylobacter jejuni
Epidemiology and Infection, 1996
SummaryCampylobacter jejuniserogroup reference strains and collections of sporadic and outbreak- associated isolates were examined for restriction fragment length polymorphisms (RFLPs), usingC. jejunirandom chromosomal and 16S rRNA gene probes. A collection of 48 Penner (HS) and 14 Lior (HL) serogroup reference strains, plus 10 clinical isolates, generated 35 RFLP and 26 ribotype patterns. In combination the two loci generated 48 distinct genotypes. Both probes were able to differentiate between certain random isolates of the same HS/HL serogroups but greater discrimination was obtained with RFLP than with ribotyping. Genotyping distinguished accurately between related and unrelated strains when applied to several outbreaks. Genotypic analysis ofC. jejuniby restriction fragment length polymorphisms is a valuable technique for epidemiological typing. Chromosomal variation detected by the two unlinked probe loci provides some information about the genetic relationship between isolates.
Journal of Clinical Microbiology, 2003
Campylobacter jejuni isolates ( n = 234) associated with gastroenteritis and the Guillain-Barré syndrome (GBS) in the island of Curaçao, Netherlands Antilles, and collected from March 1999 to March 2000 were investigated by a range of molecular typing techniques. Data obtained by pulsed-field gel electrophoresis (PFGE), amplified fragment length polymorphism (AFLP) analysis, multilocus sequence typing (MLST), automated ribotyping, and sequence analysis of the short variable region of the flagellin gene ( flaA ) were analyzed separately and in combination. Similar groupings were obtained by all methods, with the data obtained by MLST and AFLP analysis exhibiting the highest degree of congruency. MLST identified 29 sequence types, which were assigned to 10 major clonal complexes. PFGE, AFLP analysis, and ribotyping identified 10, 9, and 8 of these clonal groups, respectively; however, these three techniques permitted subdivision of the clonal groups into more different types. Member...
Campylobacter 0:41 isolation in Guillain-Barre syndrome
Archives of Disease in Childhood, 1997
Over a period of 15 months, 17 children were admitted to the Red Cross War Memorial Children's Hospital (RCW-MCH) in Cape Town with Guillain-Barré syndrome. Stool specimens were collected from 14 children and campylobacter was isolated from nine. Six of the nine isolates of Campylobacter jejuni were further identified as C jejuni biotype 2, serotype 0:41. This biotype 2, serotype 0:41 has been identified in only 12 of the 7119 campylobacter isolates at the RCWMCH over a 19 year period. Eight of the nine patients with campylobacter isolates and one of five with negative stool cultures required ventilation. Patients with C jejuni biotype 2, serotype 0:41 were ventilated for a mean (SD) of 33.5 (19.4) days, whereas patients with other campylobacter isolates were ventilated for 17.3 (3.8) days. This is the first report of campylobacters of serotype 0:41 in Guillain-Barré syndrome and could reflect a geographical isolation of this strain. (Arch Dis Child 1997;76:526-528)