Article

Risk Assessment of Pseudomonas aeruginosa in Water

University of Texas-Houston School of Public Health, Houston, Texas, USA.
Reviews of environmental contamination and toxicology (Impact Factor: 3.74). 02/2009; 201:71-115. DOI: 10.1007/978-1-4419-0032-6_3
Source: PubMed

ABSTRACT

Pseudomonads are a large group of free-living bacteria that live primarily in soil, seawater, and fresh water. They also colonize plants and animals, and are frequently found in home and clinical settings. Pseudomonads are highly versatile and can adapt to a wide range of habitats, and can even grow in distilled water. This adaptability accounts for their constant presence in the environment. They have an extensive impact on ecology, agriculture, and commerce. They are responsible for food spoilage and degradation of petroleum products and materials. In agriculture, pseudomonads rank among the most important plant pathogens. In normal healthy humans, they are responsible for eye and skin diseases. They also cause serious life-threatening illnesses in burn and surgical patients and in immunocompromised individuals. Contamination of recreational waters and tap water has been associated with outbreaks of Pseudomonas; however, the relative role water plays in the transmission of this bacterium to humans is still unclear. The goal of this review is to assess existing literature on the potential risks associated with waterborne Pseudomonas aeruginosa.

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    • "Some members of the genus Pseudomonas are known for their beneficial role to plants, while others are used for bioremediation and as biocontrol agents (Ghyselinck et al., 2013; Haas and Défago, 2005; Scherwinski et al., 2008). In addition, some members play an important role as plant pathogens (Mansfield et al., 2012) or opportunistic animal and human pathogens (Gershman et al., 2008; Mena and Gerba, 2009). Thus, pseudomonads have an extensive impact on ecology , agriculture, and commerce. "
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    ABSTRACT: The genus Pseudomonas plays an important role in the lettuce leaf microbiota and certain species can induce spoilage. The aim of this study was to investigate the occurrence and diversity of Pseudomonas spp. on oak leaf lettuce and to follow their community shift during a six day cold storage with culture-dependent and culture-independent methods. In total, 21 analysed partial Pseudomonas 16S rRNA gene sequences matched closely (> 98.3%) to the different reference strain sequences, which were distributed among 13 different phylogenetic groups or subgroups within the genus Pseudomonas. It could be shown that all detected Pseudomonas species belonged to the P. fluorescens lineage. In the culture-dependent analysis, 73% of the isolates at day 0 and 79% of the isolates at day 6 belonged to the P. fluorescens subgroup. The second most frequent group, with 12% of the isolates, was the P. koreensis subgroup. This subgroup was only detected at day 0. In the culture-independent analysis the P. fluorescens subgroup and P. extremaustralis could not be differentiated by RFLP. Both groups were most abundant and amounted to approximately 46% at day 0 and 79% at day 6. The phytopathogenic species P. salmonii, P. viridiflava and P. marginalis increased during storage. Both approaches identified the P. fluorescens group as the main phylogenetic group. The results of the present study suggest that pseudomonads found by plating methods indeed represent the most abundant part of the Pseudomonas community on oak leaf lettuce.
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    • "M.S. Rodriguez-Alvarez et al. / International Journal of Hygiene and Environmental Health xxx (2015) xxx–xxx 3 to common drinking and waste water disinfectants such as chlorine or chloramines, however, P. aeruginosa has a reputation for being resistant to some medical disinfection (Mena and Gerba, 2009). Giardia is an anaerobic flagellated protozoa capable of encystation , and known pathogenic hazard in warm blooded animals, including man (Erlandsen and Meyer, 1984) Clinical features could be from asymptomatic carriage to diarrhea, abdominal pain and rapid weight loss (Thompson, 2000). "
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    Full-text · Article · Jun 2015 · International journal of hygiene and environmental health
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    • "often invades the host tissue and cause infection and bacteremia in immunocompromised hosts (e.g., HIV/AIDS, cystic fibrosis, bronchiectasis, and severe chronic obstructive pulmonary disease, burns, malignancy, or diabetes mellitus)[5,6]. Infections also include endocarditis, osteomyelitis, urinary tract infections, gastrointestinal infections, meningitis, and, commonly, septicaemia[3,7,8]. Resistant Pseudomonas and coliform species is a public health problem that affects many countries of the world. "

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