Burkholderia cepacia complex
Sequence Analysis, DNA
RNA, Ribosomal, 16S
Molecular Sequence Data
Bacterial Typing Techniques
Gene Expression Regulation, Bacterial
Biological Warfare Agents
Polymerase Chain Reaction
Nucleic Acid Hybridization
Rec A Recombinases
Electrophoresis, Gel, Pulsed-Field
Burkholderia cocovenenans (van Damme et al. 1960) Gillis et al. 1995 and Burkholderia vandii Urakami et al. 1994 are junior synonyms of Burkholderia gladioli (Severini 1913) Yabuuchi et al. 1993 and Burkholderia plantarii (Azegami et al. 1987) Urakami et al. 1994, respectively. (1/537)Reference strains of Burkholderia cocovenenans and Burkholderia vandii were compared with strains of other Burkholderia species using SDS-PAGE of whole-cell proteins, DNA-DNA hybridization and extensive biochemical characterization. Burkholderia gladioli and B. cocovenenans were indistinguishable in the chemotaxonomic and biochemical analyses. Burkholderia plantarii and B. vandii had indistinguishable whole-cell protein patterns but the B. vandii type strain differed from B. plantarii strains in several biochemical tests. The DNA-DNA binding levels (higher than 70%) indicated that (i) B. gladioli and B. cocovenenans, and (ii) B. plantarii and B. vandii each represent a single species. It is concluded that B. cocovenenans and B. vandii are junior synonyms of B. gladioli and B. plantarii, respectively. (+info)
All in the family: structural and evolutionary relationships among three modular proteins with diverse functions and variable assembly. (2/537)The crystal structures of three proteins of diverse function and low sequence similarity were analyzed to evaluate structural and evolutionary relationships. The proteins include a bacterial bleomycin resistance protein, a bacterial extradiol dioxygenase, and human glyoxalase I. Structural comparisons, as well as phylogenetic analyses, strongly indicate that the modern family of proteins represented by these structures arose through a rich evolutionary history that includes multiple gene duplication and fusion events. These events appear to be historically shared in some cases, but parallel and historically independent in others. A significant early event is proposed to be the establishment of metal-binding in an oligomeric ancestor prior to the first gene fusion. Variations in the spatial arrangements of homologous modules are observed that are consistent with the structural principles of three-dimensional domain swapping, but in the unusual context of the formation of larger monomers from smaller dimers or tetramers. The comparisons support a general mechanism for metalloprotein evolution that exploits the symmetry of a homooligomeric protein to originate a metal binding site and relies upon the relaxation of symmetry, as enabled by gene duplication, to establish and refine specific functions. (+info)
Discrimination of Burkholderia multivorans and Burkholderia vietnamiensis from Burkholderia cepacia genomovars I, III, and IV by PCR. (3/537)We present a PCR procedure for identification of Burkholderia cepacia, Burkholderia multivorans, and Burkholderia vietnamiensis. 16S and 23S ribosomal DNAs (rDNAs) of B. multivorans and B. vietnamiensis were sequenced and aligned with published sequences for definition of species-specific 18-mer oligonucleotide primers. Specific antisense 16S rDNA primers (for B. cepacia, 5'-AGC ACT CCC RCC TCT CAG-3'; for B. multivorans, 5'-AGC ACT CCC GAA TCT CTT-3') and 23S rDNA primers (for B. vietnamiensis, 5'-TCC TAC CAT GCG TGC AA-3') were paired with a general sense primer of 16S rDNAs (5'-AGR GTT YGA TYM TGG CTC AG-3') or with a sense primer of 23S rDNA (5'-CCT TTG GGT CAT CCT GGA-3'). PCR with these primers under optimized conditions is appropriate to specifically and rapidly identify B. multivorans, B. vietnamiensis, and B. cepacia (genomovars I, III, and IV are not discriminated). In comparison with the polyphasic taxonomic analyses presently necessary for species and genomovar identification within the B. cepacia complex, our procedure is more rapid and easier to perform and may contribute to clarifying the clinical significance of individual members of the complex in cystic fibrosis. (+info)
Expression and functional analysis of an N-truncated NifA protein of Herbaspirillum seropedicae. (4/537)In Herbaspirillum seropedicae, an endophytic diazotroph, nif gene expression is under the control of the transcriptional activator NifA. We have over-expressed and purified a protein containing the central and C-terminal domains of the H. seropedicae NifA protein, N-truncated NifA, fused to a His-Tag sequence. This fusion protein was found to be partially soluble and was purified by affinity chromatography. Band shift and footprinting assays showed that the N-truncated NifA protein was able to bind specifically to the H. seropedicae nifB promoter region. In vivo analysis showed that this protein activated the nifH promoter of Klebsiella pneumoniae in Escherichia coli only in the absence of oxygen and this activation was not negatively controlled by ammonium ions. (+info)
Burkholderia caribensis sp. nov., an exopolysaccharide-producing bacterium isolated from vertisol microaggregates in Martinique. (5/537)Twenty-one exopolysaccharide-producing strains were isolated from the 5-20 microns fraction of a vertisol in the south-east of the island of Martinique in the French West Indies. Although these strains were phenotypically identified as Burkholderia cepacia or as Burkholderia glathei using BIOLOG microplates, they did not cluster genotypically by amplified rDNA restriction analysis (ARDRA) with any described Burkholderia species. A phylogenetic analysis revealed that the rrs (16S rDNA) sequences of three representative strains clustered in a single branch within the genus Burkholderia and distantly from all of the previously described species of Burkholderia for which rrs sequences were available. DNA-DNA hybridization data as well as phenotypic analyses indicated that the 21 isolates represented a single and new species for which the name Burkholderia caribensis sp. nov. is proposed (type strain MWAP64T = LMG 18531T). (+info)
Degradation of chlorobenzenes at nanomolar concentrations by Burkholderia sp. strain PS14 in liquid cultures and in soil. (6/537)The utilization of 1,2,4,5-tetrachloro-, 1,2,4-trichloro-, the three isomeric dichlorobenzenes and fructose as the sole carbon and energy sources at nanomolar concentrations was studied in batch experiments with Burkholderia sp. strain PS14. In liquid culture, all chlorobenzenes were metabolized within 1 h from their initial concentration of 500 nM to below their detection limits of 0.5 nM for 1,2,4,5-tetrachloro- and 1,2,4-trichlorobenzene and 7.5 nM for the three dichlorobenzene isomers, with 63% mineralization of the tetra- and trichloroisomers. Fructose at the same initial concentration was, in contrast, metabolized over a 4-h incubation period down to a residual concentration of approximately 125 nM with 38% mineralization during this time. In soil microcosms, Burkholderia sp. strain PS14 metabolized tetrachlorobenzene present at 64.8 ppb and trichlorobenzene present at 54.4 ppb over a 72-h incubation period to below the detection limits of 0.108 and 0.09 ppb, respectively, with approximately 80% mineralization. A high sorptive capacity of Burkholderia sp. strain PS14 for 1,2,4, 5-tetrachlorobenzene was found at very low cell density. The results demonstrate that Burkholderia sp. strain PS14 exhibits a very high affinity for chlorobenzenes at nanomolar concentrations. (+info)
Identification of Burkholderia spp. in the clinical microbiology laboratory: comparison of conventional and molecular methods. (7/537)Cystic fibrosis (CF) predisposes patients to bacterial colonization and infection of the lower airways. Several species belonging to the genus Burkholderia are potential CF-related pathogens, but microbiological identification may be complicated. This situation is not in the least due to the poorly defined taxonomic status of these bacteria, and further validation of the available diagnostic assays is required. A total of 114 geographically diverse bacterial isolates, previously identified in reference laboratories as Burkholderia cepacia (n = 51), B. gladioli (n = 14), Ralstonia pickettii (n = 6), B. multivorans (n = 2), Stenotrophomonas maltophilia (n = 3), and Pseudomonas aeruginosa (n = 11), were collected from environmental, clinical, and reference sources. In addition, 27 clinical isolates putatively identified as Burkholderia spp. were recovered from the sputum of Dutch CF patients. All isolates were used to evaluate the accuracy of two selective growth media, four systems for biochemical identification (API 20NE, Vitek GNI, Vitek NFC, and MicroScan), and three different PCR-based assays. The PCR assays amplify different parts of the ribosomal DNA operon, either alone or in combination with cleavage by various restriction enzymes (PCR-restriction fragment length polymorphism [RFLP] analysis). The best system for the biochemical identification of B. cepacia appeared to be the API 20NE test. None of the biochemical assays successfully grouped the B. gladioli strains. The PCR-RFLP method appeared to be the optimal method for accurate nucleic acid-mediated identification of the different Burkholderia spp. With this method, B. gladioli was also reliably classified in a separate group. For the laboratory diagnosis of B. cepacia, we recommend parallel cultures on blood agar medium and selective agar plates. Further identification of colonies with a Burkholderia phenotype should be performed with the API 20NE test. For final confirmation of species identities, PCR amplification of the small-subunit rRNA gene followed by RFLP analysis with various enzymes is recommended. (+info)
Differentiation of Burkholderia species by PCR-restriction fragment length polymorphism analysis of the 16S rRNA gene and application to cystic fibrosis isolates. (8/537)Burkholderia cepacia, which is an important pathogen in cystic fibrosis (CF) owing to the potential severity of the infections and the high transmissibility of some clones, has been recently shown to be a complex of five genomic groups, i.e., genomovars I, II (B. multivorans), III, and IV and B. vietnamiensis. B. gladioli is also involved, though rarely, in CF. Since standard laboratory procedures fail to provide an accurate identification of these organisms, we assessed the ability of restriction fragment length polymorphism (RFLP) analysis of amplified 16S ribosomal DNA (rDNA), with the combination of the patterns obtained with six endonucleases, to differentiate Burkholderia species. This method was applied to 16 type and reference strains of the genus Burkholderia and to 51 presumed B. cepacia clinical isolates, each representative of one clone previously determined by PCR ribotyping. The 12 Burkholderia type strains tested were differentiated, including B. cepacia, B. multivorans, B. vietnamiensis, and B. gladioli, but neither the genomovar I and III reference strains nor the genomovar IV reference strain and B. pyrrociniaT were distinguishable. CF clinical isolates were mainly distributed in RFLP group 2 (which includes B. multivoransT) and RFLP group 1 (which includes B. cepacia genomovar I and III reference strains, as well as nosocomial clinical isolates). Two of the five highly transmissible clones in French CF centers belonged to RFLP group 2, and three belonged to RFLP group 1. The remaining isolates either clustered with other Burkholderia species (B. cepacia genomovar IV or B. pyrrocinia, B. vietnamiensis, and B. gladioli) or harbored unique combinations of patterns. Thus, if further validated by hybridization studies, PCR-RFLP of 16S rDNA could be an interesting identification tool and contribute to a better evaluation of the respective clinical risks associated with each Burkholderia species or genomovar in patients with CF. (+info)
Burkholderia Infections can affect various parts of the body, including the lungs, skin, and bloodstream. Symptoms may include fever, chills, fatigue, and pain in the affected area. Burkholderia infections are often difficult to diagnose, as the symptoms can be similar to those caused by other types of bacterial infections.
Treatment of Burkholderia infections typically involves the use of antibiotics, but the effectiveness of these treatments can vary depending on the severity and location of the infection. In some cases, surgical intervention may be necessary to remove infected tissue or to repair damaged organs.
Preventing Burkholderia infections is challenging, as the bacterium can be found in a variety of environments, including soil, water, and the gastrointestinal tracts of animals. However, practicing good hygiene, avoiding contact with individuals who are infected, and following proper infection control procedures can help reduce the risk of transmission.
In conclusion, Burkholderia infections are a serious medical condition that can affect individuals with compromised immune systems. While treatment options are available, early diagnosis and prevention measures are crucial to reducing the risk of complications and improving patient outcomes.
Melioidosis is typically acquired through contact with contaminated soil or water in tropical and subtropical regions of Asia and Africa. The bacteria can enter the body through open wounds, cuts, or through the eyes, nose, or mouth. Once inside the body, the bacteria can multiply and cause a wide range of symptoms including fever, chills, headache, muscle and joint pain, and skin lesions.
If left untreated, melioidosis can lead to serious complications such as sepsis, meningitis, and pneumonia, which can be fatal. The disease is diagnosed through a combination of physical examination, laboratory tests, and imaging studies. Treatment typically involves antibiotics, and early treatment is essential for effective management of the disease.
In addition to being an important medical condition, melioidosis is also of interest to researchers studying the bacteria that cause the disease. Burkholderia pseudomallei has been found to have a unique ability to survive in a variety of environments, including soil and water, and has been studied for its potential as a bioterrorism agent.
In summary, melioidosis is a serious bacterial infection caused by Burkholderia pseudomallei that can affect multiple organ systems and cause severe illness if left untreated. It is typically acquired through contact with contaminated soil or water in tropical and subtropical regions of Asia and Africa and is diagnosed through a combination of physical examination, laboratory tests, and imaging studies. Early treatment is essential for effective management of the disease.
Glanders is transmitted through direct contact with infected animals, contaminated soil or animal products, or through insect vectors such as biting flies or ticks. The bacteria enter the body through small wounds or abrasions on the skin or mucous membranes and multiply in the lymph nodes and glands.
Clinical signs of glanders include fever, loss of appetite, depression, enlarged glands, and abscessation of the lymph nodes and other organs. The disease can progress rapidly, with death occurring within a few days to weeks after the onset of symptoms.
Diagnosis of glanders is based on clinical signs, laboratory tests such as blood cultures, and the presence of the bacteria in samples from infected animals or contaminated environments. Treatment involves antibiotics, supportive care, and isolation of affected animals to prevent further spread of the disease.
Prevention of glanders primarily involves vaccination of equines, strict sanitation and biosecurity measures, and control of insect vectors. Control programs for glanders are important in areas where the disease is common or where there is a high risk of outbreaks due to factors such as poor animal husbandry practices or movement of infected animals.
Glanders has significant economic importance as it can be a major cause of morbidity and mortality in equines, particularly in areas where the disease is endemic. In addition, the control of glanders is important for public health as the bacteria can be transmitted to humans through contact with infected animals or contaminated environments, although this is rare.
Symptoms of cystic fibrosis can vary from person to person, but may include:
* Persistent coughing and wheezing
* Thick, sticky mucus that clogs airways and can lead to respiratory infections
* Difficulty gaining weight or growing at the expected rate
* Intestinal blockages or digestive problems
* Fatty stools
* Nausea and vomiting
* Rectal prolapse
* Increased risk of liver disease and respiratory failure
Cystic fibrosis is usually diagnosed in infancy, and treatment typically includes a combination of medications, respiratory therapy, and other supportive care. Management of the disease focuses on controlling symptoms, preventing complications, and improving quality of life. With proper treatment and care, many people with cystic fibrosis can lead long, fulfilling lives.
In summary, cystic fibrosis is a genetic disorder that affects the respiratory, digestive, and reproductive systems, causing thick and sticky mucus to build up in these organs, leading to serious health problems. It can be diagnosed in infancy and managed with a combination of medications, respiratory therapy, and other supportive care.
Examples of OIs include:
1. Pneumocystis pneumonia (PCP): A type of pneumonia caused by the fungus Pneumocystis jirovecii, which is commonly found in the lungs of individuals with HIV/AIDS.
2. Cryptococcosis: A fungal infection caused by Cryptococcus neoformans, which can affect various parts of the body, including the lungs, central nervous system, and skin.
3. Aspergillosis: A fungal infection caused by Aspergillus fungi, which can affect various parts of the body, including the lungs, sinuses, and brain.
4. Histoplasmosis: A fungal infection caused by Histoplasma capsulatum, which is commonly found in the soil and can cause respiratory and digestive problems.
5. Candidiasis: A fungal infection caused by Candida albicans, which can affect various parts of the body, including the skin, mouth, throat, and vagina.
6. Toxoplasmosis: A parasitic infection caused by Toxoplasma gondii, which can affect various parts of the body, including the brain, eyes, and lymph nodes.
7. Tuberculosis (TB): A bacterial infection caused by Mycobacterium tuberculosis, which primarily affects the lungs but can also affect other parts of the body.
8. Kaposi's sarcoma-associated herpesvirus (KSHV): A viral infection that can cause various types of cancer, including Kaposi's sarcoma, which is more common in individuals with compromised immunity.
The diagnosis and treatment of OIs depend on the specific type of infection and its severity. Treatment may involve antibiotics, antifungals, or other medications, as well as supportive care to manage symptoms and prevent complications. It is important for individuals with HIV/AIDS to receive prompt and appropriate treatment for OIs to help prevent the progression of their disease and improve their quality of life.
Burkholderia virus phiE122
Burkholderia virus phi52237
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Burkholderia - Volume 15, Number 11-November 2009 - Emerging Infectious Diseases journal - CDC
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Functions: BCAM1986, Burkholderia cenocepacia J2315
Functions: BCALr0080, Burkholderia cenocepacia J2315
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- We describe an incidental Burkholderia pseudomallei laboratory exposure in Arizona, USA. (cdc.gov)
- Burkholderia pseudomallei bacterium, the causative agent of melioidosis, is endemic to Australia and Thailand. (cdc.gov)
- Current research interests focus on innate anti-bacterial immunemechanisms and on virulence traits and environmental aspects of Burkholderia pseudomallei. (meduniwien.ac.at)
- Burkholderia pseudomallei grown on sheep blood agar for 96 hours. (health.mil)
- Infection with the gram-negative bacterium Burkholderia pseudomallei can result in a life-threatening disease known as melioidosis. (health.mil)
- Since 2012, U.S. Marines have participated in training exercises in Darwin, Australia, one of the world's "hyperendemic" regions for Burkholderia pseudomallei . (health.mil)
- Melioidosis is a potentially life threatening disease caused by the gram-negative bacterium Burkholderia pseudomallei . (health.mil)
- A recombinant plasmid carrying a 2.0 kb insert from a Burkholderia pseudomallei genomic library was subjected to automated DNA sequencing utilizing a primer walking strategy. (ejbiotechnology.info)
- The Burkholderia pseudomallei is also called Pseudomonas pseudomallei. (gktoday.in)
- Background: Burkholderia pseudomallei (BP) and Burkholderia mallei (BM) are the causative agents of melioidosis and glanders, respectively. (nih.gov)
- ABSTRACT Melioidosis is a major cause of morbidity and mortality in Southeast Asia, where the causative organism ( Burkholderia pseudomallei ) is present in the soil. (ox.ac.uk)
- Pathogenicity and virulence of Burkholderia pseudomallei . (bvsalud.org)
- The soil saprophyte, Burkholderia pseudomallei , is the causative agent of melioidosis , a disease endemic in South East Asia and northern Australia . (bvsalud.org)
- The CDC and FDA have announced an outbreak of at least 15 Burkholderia cepacia infections associated with contaminated ultrasound gel used to guide invasive procedures as well as an unrelated outbreak of Burkholderia pseudomallei that caused two deaths. (medscape.com)
- Interestingly, an outbreak of Burkholderia pseudomallei was just reported by the CDC as well. (medscape.com)
- 3. Activation of Toll-like receptors by Burkholderia pseudomallei. (nih.gov)
- 19. Toll-like receptor 2 impairs host defense in gram-negative sepsis caused by Burkholderia pseudomallei (Melioidosis). (nih.gov)
- Burkholderia Cepacia Complex and Aqueous Non-Sterile Drug Manufacture. (brighttalk.com)
- Cepacia syndrome", caused by Burkholderia cepacia complex and often associated with cystic fibrosis, carries a high mortality rate. (bepress.com)
- It is rare for Burkholderia multivorans , a species within the B. cepacia complex, to cause cepacia syndrome even among patients with cystic fibrosis. (bepress.com)
- Burkholderia cepacia complex in cystic fibrosis in a Brazilian reference center. (nih.gov)
- Members of the Burkholderia cepacia complex (Bcc) are respiratory pathogens in patients with cystic fibrosis (CF). Close repetitive DNA sequences often associate with surface antigens to promote genetic variability in pathogenic bacteria. (pasteur.fr)
- Further testing has shown the presence of Burkholderia stabilis , a member of B cepacia complex (Bcc), in four lots of unopened bottles of MediChoice M500812 ultrasound gel. (medscape.com)
- Conclusion: Results of the present study suggest that BCSA can be used as a selective medium with high specificity for primary isolation and identification of Burkholderia cepacia complex bacteria. (tanaffosjournal.ir)
- Detection of Burkholderia cepacia Complex in Patients with Cystic Fibrosis', TANAFFOS (Respiration) , 3(1(winter)), pp. 47-52. (tanaffosjournal.ir)
- Glanders is an infectious disease that is caused by the bacterium Burkholderia mallei . (cdc.gov)
- This interagency working group coordinates activities related to the Burkholderia research portfolios of NIAID, BARDA and Defense Threat Reduction Agency, and shares data related to the regulatory pathway of existing and novel medical countermeasures against melioidosis and glanders. (nih.gov)
- The genome of Burkholderia cenocepacia J2315, a CF isolate belonging to the epidemic lineage Edinburgh-Toronto (ET-12), was analysed for the presence of close repetitive DNA sequences. (pasteur.fr)
- Two trimeric autotransporter adhesins (TAA) among the 13 putative antigens are absent from the other Burkholderia genomes and are clustered downstream of the cci island that is a marker for transmissible B. cenocepacia strains. (pasteur.fr)
- Physiological and cellular responses of the 2,4-D degrading bacterium, Burkholderia cepacia YK-2, to the phenoxyherbicides 2,4-D and 2,4,5-T. Curr Microbiol 45(6):415-422. (nih.gov)
- Our results suggest that the 4 selected peptide mimics corresponding to PS/LPS protective antigens of BP and BM could potentially be developed into peptide vaccines, when the public is facing un-expected, devastating biothreats of the pathogenic Burkholderia bacteria. (nih.gov)
- The agency confirmed the product had been contaminated with Burkholderia cepacia , a bacteria linked to an outbreak in five states. (cdc.gov)
- Although most species in the genus Burkholderia are not pathogenic for healthy persons, a few are capable of causing severe, life threatening infection. (nih.gov)
- These different aspects make isolation of Burkholderia cepacia an important task in cystic fibrosis health care settings. (tanaffosjournal.ir)
- Burkholderia isolates are generally resistant to commonly used antibiotics. (medscape.com)
- In mid-January 2021, the microbiology laboratory at Mayo Clinic Arizona (Phoenix, AZ, USA) identified Burkholderia species growing from an intraoperative periaortic swab sample obtained from a 58-year-old man with a mycotic aneurysm ( 3 ). (cdc.gov)
- The catalase reaction was negative, which was inconsistent with Burkholderia species. (cdc.gov)
- type strain of Burkholderia ubonensis corrig. (nih.gov)
- Results: Burkholderia cepacia strains were isolated from 6 out of 53 respiratory samples as confirmed with biochemical tests. (tanaffosjournal.ir)
- Rodney Rohde, PhD, professor and chair, Clinical Lab Science Program, Texas State University, San Marcos, told Medscape Medical News via email that Burkholderia 's "detection in the manufacturing process is difficult, and product recalls are frequent. (medscape.com)
- Your search - infekce bakteriemi rodu Burkholderia - did not match any resources. (muni.cz)
- If you have used this database, please ensure that you acknowledge the Burkholderia Genome Database publication rather than just the website URL. (burkholderia.com)
- The Burkholderia Genome Database: facilitating flexible queries and comparative analyses. (burkholderia.com)
- Title : Etymologia : Burkholderia [burk′′hol-dēr′e-ə] Published Date : Nov 2009 Source : Emerg Infect Dis. (cdc.gov)
- Materials and Methods: We examined the capacity of Burkholderia cepacia selective agar (BCSA) as a medium for primary isolation of Burkholderia cepacia samples. (tanaffosjournal.ir)
- The study revealed that 4 of the 6 peptides functioned well as "mimotopes" of Burkholderia PS and LPS as demonstrated a high degree of specific competition against the binding of 3 protective MAbs to BP and BM. (nih.gov)