The Role of Opportunistic Bacteria in Human Disease

Graevenitz, A. von

doi:10.1146/annurev.mi.31.100177.002311

Cited by 107 publications

(54 citation statements)

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“…15,[20][21][22][23] Some of these pathogens are known to flourish in the aqueous environment and are a major cause of nosocomial infections, resulting not infrequently in death. [24][25] Herein lies the danger of DUWL biofilm contamination.…”

Section: Research Cross Infectionmentioning

confidence: 99%

Electro-chemically activated water in dental unit water lines

Marais¹,

Brözel²

1999

Br Dent J

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Section: Research Cross Infectionmentioning

confidence: 99%

Electro-chemically activated water in dental unit water lines

Marais¹,

Brözel²

1999

Br Dent J

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“…e membros da famí- lia Enterobacteriaceae como Morganella morganii (Evans 1983 As bactérias isoladas a partir do lavado traqueal do animal neste relato pertencem à família Enterobacteriaceae, sendo Klebsiella spp, especialmente Klebsiella pneumoniae comumente associadas com pneumonia em répteis (Mader 2006, Santoro et al 2006. Citrobacter spp e Enterobacter spp não foram descritas associadas à pneumonia em jabutis, no entanto, estas fazem parte da microbiota oral e cloacal desses animais e outros repteis (McCoy & Seidler 1973, Bagley & Seidler 1977, Graevenitz 1977, Goldstein et al 1981, Quinn et al 1994, Jawetz et al 1998, Santoro et al 2006, Bastos et al 2008, Al-Bahry et al 2012, Benites et al 2013.…”

Section: Discussionunclassified

“…A disseminação de determinantes de resistência como β-lactamases e carbapenemases entre agentes relacionados às infecções hospitalares vem emergindo, sendo mais comumente observados em membros da família Enterobacteriaceae, incluindo Klebsiella pneumoniae e Enterobacter cloacae (Graevenitz 1977, Moland et al 2003, Luzzaro et al 2004, Queenan & Bush 2007, Zhengqing et al 2014.…”

Section: Discussionunclassified

Pneumonia bacteriana em jabuti-piranga (Chelonoidis carbonaria): aspectos clínicos, microbiológicos, radiológicos e terapêutica

et al. 2014

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Pesq. Vet. Bras. 34(9):891-895, setembro 2014 891 RESUMO.-A pneumonia é uma doença respiratória comum na clínica de répteis. Agentes infecciosos são capazes de causar pneumonia primária em répteis mantidos em cativeiro, porém na maioria dos casos, são secundárias a problemas de manejo, higiene e nutricionais. O objetivo desse trabalho foi relatar a ocorrência de pneumonia bacteriana em jabuti-piranga (Chelonoidis carbonaria), e descrever o diagnóstico clínico, microbiológico, radiográfico e a conduta terapêutica. O animal apresentava sinais de distúr- Pneumonia is a common respiratory disease in clinical of reptiles. Infectious agents are capable of causing primary pneumonia in reptiles maintained in captivity, but in most cases are secondary to problems of management, hygiene and nutrition. The aim of this study was to report the occurrence of bacterial pneumonia in red-footed tortoise (Chelonoidis carbonaria), and describe the clinical, microbiologic, radiographic and therapeutic management. The animal showed signs of respiratory disorders and has been described in the clinical history before diagnosis of pneumonia. The radiographic findings were suggestive of pneumonia/pulmonary edema. Based on the displayed radiographic examination and clinical signs began treatment with administration of chloramphenicol (40mg/ kg/SID/IM) for ten days. Were isolated Klebsiella spp. and Citrobacter spp. bacterial culture done collecting endotracheal lavage. Both with multiple antibiotic resistance profile tested. Treatment protocol was instituted using gentamicin (5mg/kg/IM) applications into seven intervals of 72h. There was improvement in clinical signs of the animal, but the presence of nasal secretion was still observed. New radiographic examination, demonstrating slight decrease in the opacity of the right lung field and no significant change in the left lung field in craniocaudal projection was performed. Because of the persistence of clinical signs presented new collection endotracheal material was performed, and there was isolation of Citrobacter spp. and Enterobacter spp. From the results obtained in the antibiogram, was instituted new protocol with the use of amikacin (2.5mg/kg/IM) applications into seven intervals of 72h. After antibiotic therapy, other radiological examination was performed, and showed satisfactory reduction in pulmonary function and clinical signs.

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“…The classification method divides all Pseudomonas spp. into five groups based on the relatedness of their rRNA genes, which undergo fewer changes than most other DNA sequences in the course of evolution (Von Graevenitz, 1977). Bacteria belonging to the genus Pseudomonas are effective root colonizers and biocontrol agents.…”

Section: Introductionmentioning

confidence: 99%

“…They are found in soils, foliage, fresh water, sediments, and seawater (Von Graevenitz, 1977). Among PGPR, fluorescent pseudomonads are good rhizosphere colonizers, although they have also been found inside tissues of flowers and fruits (Compant et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Plant growth promoting rhizobacteria and their potential for biocontrol of phytopathogens

Ramadan¹,

Abdel-Hafez²,

Hassan³

et al. 2016

Afr. J. Microbiol. Res.

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Growth promotion and disease control by rhizobacteria are complex interrelated processes that involve direct and indirect mechanisms. The mechanisms include synthesis of some metabolites (auxin, cytokinin and gibberellins), induction of 1-aminocyclopropane-1-carboxylate (ACC) deaminase, production of siderophore, antibiotics, hydrogen cyanide hydrogen cyanide (HCN) and volatile compounds. They also include mineral solubilization competition, and induction of systemic resistance. These bacteria are suitable as soil inoculants because they have the potential for rapid and aggressive colonization. This feature alone is characterised as a disease control mechanism, which prevents the invasion of detrimental soil microorganisms onto the root surface. Inoculant-based plant growthpromoting rhizobacteria (PGPR) is applied extensively on agricultural crops to improve plants' growth and simultaneously reduce chemical inputs like fertilizer and pesticide which can cause environmental degradation. The structure of the rhizobacterial community is affected by several factors including plant genotype and is determined by the amount and composition of root exudates. In addition, soil type and fertility are the contributing factors that shape the community. This form of communication can affect plants' growth, nutrient status and also susceptibility to stress and pathogens in the host plant. PGPR inoculants cause diverse beneficial interactions among plants, which leads to sustainable and environment-friendly agriculture. The application of rhizosphere soil of agricultural crops with desirable bacterial populations is considered promising in both laboratory and greenhouse experiment. Further, a clearer understanding of the way PGPRs promote plants' growth can lead to expanded exploitation of these 'biofertilizers' in order to reduce the potential negative environmental effects associated with food and fiber production.

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The Role of Opportunistic Bacteria in Human Disease

Cited by 107 publications

References 0 publications

Electro-chemically activated water in dental unit water lines

Electro-chemically activated water in dental unit water lines

Pneumonia bacteriana em jabuti-piranga (Chelonoidis carbonaria): aspectos clínicos, microbiológicos, radiológicos e terapêutica

Plant growth promoting rhizobacteria and their potential for biocontrol of phytopathogens

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