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Baumann U, Mansouri E, von Specht BU. Recombinant OprF-OprI as a vaccine against Pseudomonas aeruginosa infections. Vaccine 2004; 22:840-7. [PMID: 15040936 DOI: 10.1016/j.vaccine.2003.11.029] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A vaccine against Pseudomonas aeruginosa based on recombinant outer membranes has been developed. After intramuscularly injecting into patients with severe burns, antibodies against P. aeruginosa were induced. Vaccination was well tolerated. Intranasal application of the vaccine into volunteers, induced specific s-IgA antibodies. We conclude that the newly developed vaccine may be suitable for protection of the main risk groups of P. aeruginosa infections. In particular, for the protection of burn patients and patients with cystic fibrosis.
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Affiliation(s)
- U Baumann
- Medizinische Hochschule Hannover, Abteilung Pädiatrische Pneumonologie und Neonatalogie, 30623 Hannover, Germany
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Larbig M, Mansouri E, Freihorst J, Tümmler B, Köhler G, Domdey H, Knapp B, Hungerer KD, Hundt E, Gabelsberger J, von Specht BU. Safety and immunogenicity of an intranasal Pseudomonas aeruginosa hybrid outer membrane protein F-I vaccine in human volunteers. Vaccine 2001; 19:2291-7. [PMID: 11257350 DOI: 10.1016/s0264-410x(00)00550-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A hybrid protein [Met-Ala-(His)(6) OprF(190-342)-OprI(21-83)] consisting of the mature outer membrane protein I (OprI) and amino acids 190-342 of OprF of Pseudomonas aeruginosa was expressed in Escherichia coli and purified by Ni(2+) chelate-affinity chromatography. After several studies in healthy volunteers, as well as in patients, had proven the tolerability and immunogenicity of the the OprF-OprI vaccine, after intra-muscular application, we developed an emulgel for intranasal immunization. For this purpose we combined a highly concentrated OprF-I with sodium dodecylsulfate as vehicle and the gel matrix natriumlauryl sulfate. After safety and pyrogenicity evaluations in animals, eight healthy adult human volunteers received the OprF-I gel intranasally three times at 2-week intervals. The vaccination was well tolerated and no side effects were observed. An antibody induction (IgG and IgA) could be detected in the sera. These data support continued clinical investigation of the protection against infections in cystic fibrosis patients and patients prone to P. aeruginosa infections.
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Affiliation(s)
- M Larbig
- Medizinische Hochschule Hannover, Abteilung Pädiatrische Pneumologie und Neonatologie/Klinische Forschergruppe Mukoviszidose, 30623, Hannover, Germany
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Felts AG, Grainger DW, Slunt JB. Locally delivered antibodies combined with systemic antibiotics confer synergistic protection against antibiotic-resistant burn wound infection. THE JOURNAL OF TRAUMA 2000; 49:873-8. [PMID: 11086779 DOI: 10.1097/00005373-200011000-00014] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Nosocomially derived gram-negative infections, particularly from antibiotic-resistant pathogens, are a cause of morbidity in patients with severe burn wounds. METHODS Locally delivered polyclonal antibodies and systemically infused ceftazidime were combined in a lethal murine burn wound model against a virulent Pseudomonas aeruginosa strain that exhibits intermediate resistance to ceftazidime. RESULTS Survival was synergistically enhanced in cohorts of burned mice treated both locally (subeschar) with pooled polyclonal human immunoglobulin G (1-mg dose) and intravenously with infused ceftazidime (0.44 mg dose). Enhancement of survival correlated with reduced bacterial quantitation in local and systemic tissue observed in separate burned cohorts. Burned, infected mice treated prophylactically with either individual treatment at the same dose or a combination of both treatments administered systemically showed no survival enhancement as compared with the untreated control group. CONCLUSION Treatment of antibiotic-resistant burn wound infections with antibiotics together with locally delivered immunoglobulins may improve antibiotic protective effects against antibiotic-resistant pathogens.
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Affiliation(s)
- A G Felts
- Anthony G. Gristina Institute for Biomedical Research, Herndon, Virginia, USA.
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Denis-Mize KS, Price BM, Baker NR, Galloway DR. Analysis of immunization with DNA encoding Pseudomonas aeruginosa exotoxin A. FEMS IMMUNOLOGY AND MEDICAL MICROBIOLOGY 2000; 27:147-54. [PMID: 10640610 DOI: 10.1111/j.1574-695x.2000.tb01425.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The promising arena of DNA-based vaccines has led us to investigate possible candidates for immunization against bacterial pathogens. One such target is the opportunistic pathogen Pseudomonas aeruginosa which produces exotoxin A (PE), a well-characterized virulence factor encoded by the toxA gene. In its native protein form, PE is highly cytotoxic for susceptible eukaryotic cells through ADP-ribosylation of elongation factor-2 following internalization and processing of the toxin. To study the biologic and immunological effects of PE following in situ expression, we have constructed eukaryotic plasmid expression vectors containing either the wild-type or a mutated, non-cytotoxic toxA gene. In vitro analysis by transfection of UM449 cells suggests that expression of the wild-type toxA gene is lethal for transfected cells whereas transfection with a mutated toxA gene results in the production of inactive PE which can be readily detected by immunoblot analysis of cell lysates. To investigate the effects resulting from the intracellular expression of potentially cytotoxic gene products in DNA vaccine constructs, we immunized mice with both the wild-type and mutant toxA plasmid constructs and analyzed the resulting humoral and cellular immune responses. Immunization with the mutated toxA gene results in production of neutralizing antibodies against native PE and potentiates a T(H)1-type response, whereas only a minimal humoral response can be detected in mice immunized with wild-type toxA. DNA-based vaccination with the non-cytotoxic toxA(mut) gene confers complete protection against challenge with the wild-type PE. Therefore, genetic immunization with genes encoding potentially cytotoxic gene products raises concern with regard to the selection of feasible gene targets for DNA vaccine development.
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Affiliation(s)
- K S Denis-Mize
- Department of Microbiology, The Ohio State University, 484 West 12th Avenue, Columbus, OH 43210-1292, USA
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Felts AG, Giridhar G, Grainger DW, Slunt JB. Efficacy of locally delivered polyclonal immunoglobulin against Pseudomonas aeruginosa infection in a murine burn wound model. Burns 1999; 25:415-23. [PMID: 10439150 DOI: 10.1016/s0305-4179(99)00017-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The leading cause of morbidity and mortality in severe burn wound patients is infection. Treatment of burn wound infection is complicated by the emergence of antibiotic resistant organisms. A potential therapeutic alternative to antibiotic drugs is the local administration of polyclonal antibodies, termed passive local immunotherapy (PLI), directly to the burned tissue. A mouse burn wound infection model to simulate full thickness burn wound infection was used to evaluate the efficacy of passive local immunotherapy as a viable prophylactic or therapeutic agent. Pooled human immunoglobulins (IgG), delivered locally to the site of infection, are shown to be more effective at preventing fatal burn wound sepsis than treatment by intravenous infusion of IgG. A single 10 mg dose of human IgG administered locally to the burned, infected tissue site, either 24 hours prior to bacterial challenge, or within 3 hours after bacterial challenge, enhanced animal survival significantly (P < 0.001 and P < 0.05 respectively) compared to control animals. In addition, reduced levels of bacteria were found in local and systemic tissues of IgG-treated mice compared to control mice (P < 0.05). These data support the local use of polyclonal immunoglobulin preparations as an efficacious and cost effective means to prevent and treat burn wound infections.
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Affiliation(s)
- A G Felts
- Anthony G. Gristina Institute for Biomedical Research, USA
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Barekzi NA, Poelstra KA, Felts AG, Rojas IA, Slunt JB, Grainger DW. Efficacy of locally delivered polyclonal immunoglobulin against Pseudomonas aeruginosa peritonitis in a murine model. Antimicrob Agents Chemother 1999; 43:1609-15. [PMID: 10390211 PMCID: PMC89332 DOI: 10.1128/aac.43.7.1609] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/1998] [Accepted: 04/23/1999] [Indexed: 11/20/2022] Open
Abstract
Infectious peritonitis results from bacterial contamination of the abdominal cavity. Conventional antibiotic treatment is complicated both by the emergence of antibiotic-resistant bacteria and by increased patient populations intrinsically at risk for nosocomial infections. To complement antibiotic therapies, the efficacy of direct, locally applied pooled human immunoglobulin G (IgG) was assessed in a murine model (strains CF-1, CD-1, and CFW) of peritonitis caused by intraperitoneal inoculations of 10(6) or 10(7) CFU of Pseudomonas aeruginosa (strains IFO-3455, M-2, and MSRI-7072). Various doses of IgG (0.005 to 10 mg/mouse) administered intraperitoneally simultaneously with local bacterial challenge significantly increased survival in a dose-dependent manner. Local intraperitoneal application of 10 mg of IgG increased animal survival independent of either the P. aeruginosa or the murine strains used. A local dose of 10 mg of IgG administered up to 6 h prophylactically or at the time of bacterial challenge resulted in 100% survival. Therapeutic 10-mg IgG treatment given up to 12 h postinfection also significantly increased survival. Human IgG administered to the mouse peritoneal cavity was rapidly detected systemically in serum. Additionally, administered IgG in peritoneal lavage fluid samples actively opsonized and decreased the bacterial burden via phagocytosis at 2 and 4 h post-bacterial challenge. Tissue microbial quantification studies showed that 1.0 mg of locally applied IgG significantly reduced the bacterial burden in the liver, peritoneal cavity, and blood and correlated with reduced levels of interleukin-6 in serum.
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Affiliation(s)
- N A Barekzi
- Anthony G. Gristina Institute for Biomedical Research (formerly Medical Sciences Research Institute), Inc., Herndon, Virginia 20170, USA
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Mansouri E, Gabelsberger J, Knapp B, Hundt E, Lenz U, Hungerer KD, Gilleland HE, Staczek J, Domdey H, von Specht BU. Safety and immunogenicity of a Pseudomonas aeruginosa hybrid outer membrane protein F-I vaccine in human volunteers. Infect Immun 1999; 67:1461-70. [PMID: 10024596 PMCID: PMC96482 DOI: 10.1128/iai.67.3.1461-1470.1999] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A hybrid protein [Met-Ala-(His)6OprF190-342-OprI21-83] consisting of the mature outer membrane protein I (OprI) and amino acids 190 to 342 of OprF of Pseudomonas aeruginosa was expressed in Escherichia coli and purified by Ni2+ chelate-affinity chromatography. After safety and pyrogenicity evaluations in animals, four groups of eight adult human volunteers were vaccinated intramuscularly three times at 4-week intervals and revaccinated 6 months later with either 500, 100, 50, or 20 microg of OprF-OprI adsorbed onto A1(OH)3. All vaccinations were well tolerated. After the first vaccination, a significant rise of antibody titers against P. aeruginosa OprF and OprI was measured in volunteers receiving the 100- or the 500-microg dose. After the second vaccination, significant antibody titers were measured for all groups. Elevated antibody titers against OprF and OprI could still be measured 6 months after the third vaccination. The capacity of the elicited antibodies to promote complement binding and opsonization could be demonstrated by a C1q-binding assay and by the in vitro opsonophagocytic uptake of P. aeruginosa bacteria. These data support the continued development of an OprF-OprI vaccine for use in humans.
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Affiliation(s)
- E Mansouri
- Chirurgische Universitätsklinik der Universität Freiburg, Freiburg, Germany
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von Specht B, Knapp B, Hungerer K, Lücking C, Schmitt A, Domdey H. Outer membrane proteins of Pseudomonas aeruginosa as vaccine candidates. J Biotechnol 1996; 44:145-53. [PMID: 8717398 DOI: 10.1016/0168-1656(95)00161-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We tested the ability of the recombinant outer membrane proteins of Pseudomonas aeruginosa to serve as a protective vaccine against this Gram-negative pathogen in the presence of two main pathophysiological events leading to P. aeruginosa sepsis: (i) systemic infection during immunosuppression; and (ii) bacterial translocation. A hybrid vaccine was cloned which combined the protective epitopes of outer membrane protein F (OprF) and outer membrane protein I (OprI). This vaccine proved to be highly protective against an intraperitoneal challenge with P. aeruginosa in immunosuppressed mice. Oral immunization of mice with recombinant OprI expressing Salmonella dublin, induced s-IgA antibodies in the gut mucosa against OprI. These provided protection against translocation of P. aeruginosa in an immunosuppressed mouse model. To test whether OprI is effective in man, recombinant OprI was purified and used for the immunization of human volunteers. Immunization was tolerated well, and no side effects were observed. Antibody titers against OprI were measured in 90% of the volunteers after immunization.
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Affiliation(s)
- B von Specht
- Chirurgische Universitätsklinik, Chirurgische Forschung, Freiburg im Breisgau, Germany
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Rosok MJ, Stebbins MR, Connelly K, Lostrom ME, Siadak AW. Generation and characterization of murine antiflagellum monoclonal antibodies that are protective against lethal challenge with Pseudomonas aeruginosa. Infect Immun 1990; 58:3819-28. [PMID: 2123821 PMCID: PMC313741 DOI: 10.1128/iai.58.12.3819-3828.1990] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Two murine monoclonal antibodies, IIG5 (IgG3) and IVE8 (IgG2a), that bind to Pseudomonas aeruginosa type a flagella and type b flagella, respectively, were prepared by conventional hybridoma methodology. Specificity of each monoclonal antibody for type a or type b flagella was demonstrated by enzyme-linked immunosorbent assay, indirect immunofluorescence, and immunoblotting. The percentage of P. aeruginosa isolates recognized by each monoclonal antibody was analyzed by enzyme-linked immunosorbent assay. Among a panel of 257 flagellated P. aeruginosa clinical isolates, IIG5 bound to 67.7% of the isolates and IVE8 bound to another 30.7%, for a combined coverage of 98.4%. Inhibition of motility of P. aeruginosa by the monoclonal antibodies was observed in vitro in a soft agar assay and was dose dependent. The protective efficacy of IIG5 and IVE8 was examined in a mouse burn wound sepsis model. The antiflagellum monoclonal antibodies provided specific and significant prophylactic and therapeutic protection against lethal challenge with P. aeruginosa strains.
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Comparison of pre- versus post-sepsis treatment with polyclonal immunoglobulin versus O serotype specific monoclonal antibody in burned Pseudomonas aeruginosa infected mice. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0888-0786(90)90008-c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Anastassiou ED, Spiliopoulou I, Arvaniti A, Dimitracopoulos G. A retrospective study of Pseudomonas aeruginosa isolation from clinical sources. J Chemother 1989; 1:240-3. [PMID: 2509644 DOI: 10.1080/1120009x.1989.11738899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The incidence of Pseudomonas aeruginosa recovery from blood, urine and other clinical specimens as well as its resistance to various antimicrobials during a 5-year period (1982 to 1986) are reported. The susceptibility patterns to newer antipseudomonad agents of 100 randomly selected P. aeruginosa clinical strains isolated in 1987 is also presented. Our results show an overall P. aeruginosa isolation incidence of 10.6%, with its resistance to routinely used antibiotics being high but relatively low to the newer agents which have not been used extensively in our hospital.
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Affiliation(s)
- E D Anastassiou
- Department of Microbiology, School of Medicine, University of Patras, Greece
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