Abstract

Burkholderia cepacia has emerged as an important multiresistant pathogen in cystic fibrosis (CF), associated in 20% of colonised patients with a rapid and fatal decline in lung function. Although knowledge of B. cepacia epidemiology has improved, the mechanisms involved in pathogenesis remain obscure. In this study, B. cepacia lipopolysaccharide (LPS) was assessed for endotoxic potential and the capacity to induce tumour necrosis factor (TNF). LPS preparations from clinical and environmental isolates of B. cepacia and from the closely related species Burkholderia gladioli exhibited a higher endotoxic activity and more pronounced cytokine response in vitro compared to preparations from the major CF pathogen Pseudomonas aeruginosa. This study may help to explain the vicious host immune response observed during pulmonary exacerbations in CF patients colonised by B. cepacia and lead to therapeutic advances in clinical management.

References

[1]
Govan
J.R.W.
Nelson
J.W.
(
1992
)
Microbiology of lung infection in cystic fibrosis
.
Br. Med. Bull.
 
48
,
912
930
.
[2]
Prince
A.
(
1986
)
Antibiotic resistance in Pseudomonas species
.
J. Pediatr.
 
108
,
830
834
.
[3]
Lewin
C.
Doherty
C.
Govan
J.
(
1993
)
In vitro activities of meropenem, PD 127391 and PD 131628
.
Antimicrob. Agents Chemother.
 
37
,
123
125
.
[4]
Govan
J.R.W.
Brown
P.H.
Maddison
J.
Doherty
C.J.
Nelson
J.W.
Dodd
M.
Greening
A.P.
Webb
A.K.
(
1993
)
Evidence for transmission of Pseudomonas cepacia by social contact in cystic fibrosis
.
Lancet
 
342
,
15
19
.
[5]
Isles
A.
Maclusky
I.
Corey
M.
Gold
R.
Prober
C.
Fleming
P.
Levison
H.
(
1984
)
Pseudomonas cepacia infection in cystic fibrosis: an emerging problem
.
J. Pediatr.
 
104
,
206
210
.
[6]
Rosenstein
B.J.
Hall
D.E.
(
1980
)
Pneumonia and septicemia due to Pseudomonas cepacia in a patient with cystic fibrosis
.
John Hop. Med. J.
 
147
,
188
189
.
[7]
Nelson
J.W.
Butler
S.L.
Krieg
D.
Govan
J.R.W.
(
1994
)
Virulence factors of Burkholderia cepacia
.
FEMS Immunol. Med. Microbiol.
 
8
,
89
98
.
[8]
Rietschel
E.Th.
Kirikae
T.
Schade
F.U.
Ulmer
A.J.
Holst
O.
Brade
H.
Schmidt
G.
Mamat
U.
Grimmecke
H.
Kusumoto
S.
Zahringer
U.
(
1993
)
The chemical structure of bacterial endotoxin in relation to bioactivity
.
Immunobiology
 
187
,
169
190
.
[9]
Rees
R.C.
(
1991
)
Cytokines: their role in regulating immunity and the response to infection
.
Rev. Med. Microbiol.
 
3
,
9
14
.
[10]
Greally
P.
Hussein
M.J.
Cook
A.J.
Sampson
A.P.
Piper
P.J.
Price
J.F.
(
1993
)
Sputum tumour necrosis factor-α and leukotriene concentrations in cystic fibrosis
.
Arch. Dis. Child
 
68
,
389
392
.
[11]
Wilson
C.B.
Franklin
T.
Smith
A.L.
Casey
S.
Kushmerick
P.
Hedges
D.
Williams-Warren
J.
Sherry
B.L.
Ramsey
B.
(
1993
)
Increased TNF-α and IL-1β production in CF patients with clinical deterioration
.
7th North American Cystic Fibrosis Conference, Dallas, Symposium Session Summaries
 ,
Abstract S8.3
, pp.
119
120
.
[12]
Christenson
J.C.
Welch
D.F.
Mukwaya
G.
Muszynski
M.J.
Weaver
R.E.
Brenner
D.J.
(
1989
)
Recovery of Pseudomonas gladioli from respiratory tract specimens of patients with cystic fibrosis
.
J. Clin. Microbiol.
 
27
,
270
273
.
[13]
Simpson
I.N.
Finlay
J.
Winstanley
D.J.
Dewhurst
N.
Nelson
J.W.
Butler
S.L.
Govan
J.R.W.
(
1994
)
Multiresistance isolates possessing characteristics of both Burkholderia (Pseudomonas) cepacia and Burkholderia gladioli from patients with cystic fibrosis
.
J. Antimicrob. Chemother
 
34
,
353
361
.
[14]
Govan
J.R.W.
Harris
G.
(
1985
)
Typing of Pseudomonas cepacia by bacteriocin susceptibility and production
.
J. Clin. Microbiol.
 
22
,
490
494
.
[15]
Grothes
D.
Koopmann
U.
von DerHardt
H.
Tümmler
B.
(
1988
)
Genome fingerprinting of Pseudomonas aeruginosa indicates colonization of cystic fibrosis siblings with closely related strains
.
J. Clin. Microbiol.
 
26
,
1973
1977
.
[16]
Westphal
O.
Luderitz
O.
(
1954
)
Chemische erforschung von lipopolysacchariden gramnegativer bakterien
.
Angew. Chem.
 
66
,
407
414
.
[17]
Laemmli
U.K.
(
1970
)
Cleavage of structural proteins during the assembly of the head protein of bacteriophage T4
.
Nature
 
227
,
680
685
.
[18]
Tsai
C-M.
Frasch
C.E.
(
1982
)
A sensitive silver stain for detecting lipopolysaccharides in polyacrylamide gels
.
Anal. Biochem.
 
119
,
115
119
.
[19]
Hancock
I.C.
Poxton
I.R.
(
1988
)
Bacterial Cell Surface Techniques
 .
John Wylie and Sons
,
Chichester
.
[20]
Towbin
H.
Staehelin
T.
Gordon
J.
(
1979
)
Electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose sheets: procedure and some applications
.
Proc. Natl. Acad. Sci. USA
 
76
,
4350
4354
.
[21]
Beckmann
I.
van Eijk
H.G.
Meisel-Mikokijczyk
F.
Wallenburg
H.C.
(
1989
)
Detection of 2-keto-3-deoxyoctonate in endotoxins isolated from six references strains of the Bacteroides fragilis group
.
Int. J. Biochem.
 
21
,
661
666
.
[22]
Lowry
O.H.
Rosebrough
N.J.
Farr
A.L.
Randall
R.J.
(
1951
)
Protein measurement with the Folin Phenol reagent
.
J. Biol. Chem.
 
193
,
265
275
.
[23]
Chen
P.S.
Toribara
T.Y.
Warner
H.
(
1956
)
Microdetermination of phosphorus
.
Anal. Chem.
 
28
,
1756
1761
.
[24]
Dubois
M.
Gilles
K.A.
Hamilton
J.K.
Rebers
P.A.
(
1956
)
Colorimetric method for the determination of sugars and related substances
.
Anal. Chem.
 
28
,
350
356
.
[25]
McKevitt
A.I.
Woods
D.E.
(
1984
)
Characterization of Pseudomonas cepacia isolates from patients with cystic fibrosis
.
J. Clin. Microbiol.
 
19
,
291
293
.
[26]
Gressner
A.R.
Mortensen
J.E.
(
1990
)
Pathogenic factors of Pseudomonas cepacia isolates from patients with cystic fibrosis
.
J. Med. Microbiol.
 
33
,
115
120
.
[27]
Cox
A.D.
Wilkinson
S.G.
(
1989
)
Structures of the O-specific polymers from the lipopolysaccharides of the reference strains for Pseudomonas cepacia serogroups 03 and 05
.
Carbohydr. Res.
 
195
,
123
129
.
[28]
Cox
A.D.
Wilkinson
S.G.
(
1990
)
Structure of the putative O antigen containing 2-amino-2-deoxy-l-glucose in the refernce strain for Pseudomonas cepacia serogroup 01
.
Carbohydr. Res.
 
195
,
295
301
.
[29]
Cox
A.D.
Wilkinson
S.G.
(
1991
)
Ionizing groups in lipopolysaccharides of Pseudomonas cepacia in relation to antibiotic resistance
.
Mol. Microbiol.
 
5
,
641
646
.
[30]
Manthey
C.L.
Vogel
S.N.
(
1992
)
The role of cytokines in host responses to endotoxin
.
Rev. Med. Microbiol.
 
3
,
72
79
.
[31]
Fomsgaard
A.
(
1990
)
Antibodies to LPS in diagnosis
.
APMIS
 
vol 98
, (
Suppl. 18
),
24
27
.
[32]
Burkhead
K.D.
Schisler
D.A.
Slininger
P.J.
(
1994
)
Pyrrolnitrin production by biological control agent Pseudomonas cepacia B37w in culture and in colonized wounds of potatoes
.
Appl. Environ. Microbiol.
 
60
,
2031
2039
.
[33]
Janisiewicz
W.J.
Roitman
J.
(
1988
)
Biological control of blue and gray mold on apple and pear with Pseudomonas cepacia
.
Phytopath.
 
78
,
1697
1700
.
[34]
Aoki
M.
Uehara
K.
Koseki
K.
Tsuji
K.
Iijima
M.
Ono
K.
Samejima
T.
(
1991
)
An antimicrobial substance produced by Pseudomonas cepacia B5 against the bacterial wilt disease pathogen, Pseudomonas solanacearum
.
Agric. Biol. Chem.
 
55
,
715
722
.
[35]
Folsom
B.R.
Chapman
P.J.
Pritchard
P.H.
(
1990
)
Phenol and trichloroethylene degradation by Pseudomonas cepacia G4: Kinetics and interactions between substrates
.
Appl. Environ. Microbiol.
 
56
,
1279
1285
.
[36]
Bevivino
A.
Tabacchioni
S.
Chiarini
L.
Carusi
M.V.
Del Gallo
M.
Visca
P.
(
1994
)
Phenotypic comparison between rhizosphere and clinical isolates of Burkholderia cepacia
.
Microbiology
 
140
,
1069
1077
.
[37]
List No. 45
. (
1993
)
Validation of the publication of new names and new combinations previously effectively published outside the IJSB
.
Int. J. Syst. Bacteriol.
 
43
,
398
399
.
[38]
Manniello
J.M.
Heymann
H.
Adair
F.W.
(
1979
)
Isolation of atypical lipopolysaccharides from purified cell walls of Pseudomonas cepacia
.
J. Gen. Microbiol.
 
112
,
397
400
.
[39]
Strauss
D.C.
Lonon
M.K.
Woods
D.E.
Garner
C.W.
(
1990
)
3-Deoxy-d-manno-2-octulosonic acid in the lipopolysaccharide of various strains of Pseudomonas cepacia
.
J. Med. Microbiol.
 
33
,
265
269
.
[40]
Anwar
H.
Brown
M.R.W.
Cozens
R.M.
Lambert
P.A.
(
1983
)
Isolation and characterization of the outer and cytoplasmic membranes of Pseudomonas cepacia
.
J. Gen. Microbiol.
 
129
,
499
507
.
[41]
Davidson
D.J.
Dorin
J.R.
McLachlan
G.
Ranaldi
V.
Lamb
D.
Doherty
C.
Govan
J.
Porteous
D.J.
(
1994
)
Lung disease in the cystic fibrosis mouse exposed to bacterial pathogens
.
Nature genetics
 ,
in press
.
[42]
Elborn
J.S.
Dodd
M.
Maddison
J.
Nixon
L.E.
Nelson
J.
Govan
J.
Webb
A.K.
Shale
D.J.
(
1994
)
Clinical and inflammatory responses in CF patients infected with Pseudomonas aeruginosa (PA) and cepacia (PC)
.
8th North American Cystic Fibrosis Conference
 ,
Florida
,
Pediatr. Pulmonol
.
Suppl. 10
, pp.
287
.