Colonic Carcinoma Manifesting As Aeromonas Colitis

Cook, Michael A.; Nedunchezian, Deeptha; Phillips, Michael

doi:10.1097/00004836-199404000-00018

Cited by 4 publications

(2 citation statements)

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“…Several of the neutropenic patients presented with bloody diarrhea and symptoms suggestive of infection. Aeromonas colitis has also been linked to a single case of underlying and undiagnosed colonic carcinoma (51). It may well be that persons with hematologic cancers, tumors of the gastrointestinal tract, or other underlying pathological anomalies of the alimentary canal are predisposed to colonization/infections with Aeromonas.…”

Section: Aeromonas and Gastroenteritismentioning

confidence: 99%

The GenusAeromonas: Taxonomy, Pathogenicity, and Infection

2010

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SUMMARY Over the past decade, the genus Aeromonas has undergone a number of significant changes of practical importance to clinical microbiologists and scientists alike. In parallel with the molecular revolution in microbiology, several new species have been identified on a phylogenetic basis, and the genome of the type species, A. hydrophila ATCC 7966, has been sequenced. In addition to established disease associations, Aeromonas has been shown to be a significant cause of infections associated with natural disasters (hurricanes, tsunamis, and earthquakes) and has been linked to emerging or new illnesses, including near-drowning events, prostatitis, and hemolytic-uremic syndrome. Despite these achievements, issues still remain regarding the role that Aeromonas plays in bacterial gastroenteritis, the extent to which species identification should be attempted in the clinical laboratory, and laboratory reporting of test results from contaminated body sites containing aeromonads. This article provides an extensive review of these topics, in addition to others, such as taxonomic issues, microbial pathogenicity, and antimicrobial resistance markers.

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Section: Aeromonas and Gastroenteritismentioning

confidence: 99%

The GenusAeromonas: Taxonomy, Pathogenicity, and Infection

2010

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“…malities such as inflammatory bowel disease and colonic carciHow should laboratories identify aeromonads? One possibilnoma [119,120]. Thus, established protocols for the isolation ity is to continue to identify Aeromonas species to the phenoand identification of aeromonads from feces are needed in order species level, e.g., to the A. hydrophila, A. caviae, A.…”

Section: Laboratory Identification Identification and Reporting Specimentioning

confidence: 99%

Evolving Concepts Regarding the GenusAeromonas: An Expanding Panorama of Species, Disease Presentations, and Unanswered Questions

Janda¹,

Abbott²

1998

CLIN INFECT DIS

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It has been almost 10 years since a major review on the association of Aeromonas with human disease has been published. During that period the number of valid species in the genus has grown to 14, with a new family (Aeromonadaceae) established to house this genus. Despite this explosion in the number of new genomospecies, only five (Aeromonas hydrophila, A. caviae, A. veronii, A. jandaei, and A. schubertii) are currently recognized as human pathogens. New syndromes attributed to this genus include hemolytic uremic syndrome, burn-associated sepsis, and a variety of respiratory tract infections, including epiglottitis. Convincing evidence suggests that some aeromonads do cause gastroenteritis, but it is presently unclear whether many of the strains isolated from feces are involved in diarrheal disease. Many questions regarding this genus remain unanswered.The genus Aeromonas is one of several medically significant fish, reptiles, and amphibia), and disease spectrums (gastroenteritis and septicemia). Recently, sophisticated molecular genera that have become an increasingly troublesome group to physicians and microbiologists alike by virtue of their changing techniques, including 16S rRNA sequencing, have indicated that these three genera are not closely related to each other on phylogenetic relationships, evolving taxonomy, and controversial role in certain human diseases. The turbulent changes in an evolutionary basis; plesiomonads are more closely related to the Enterobacteriaceae, and aeromonads are represented by Aeromonas taxonomy witnessed over the past 10 years, referred to as a ''sea of change'' by Carnahan [1], have led many a family of their own [2, 10 -12]. Although a number of excellent reviews on various aspects microbiologists to give up attempting to identify aeromonads to the species level in the laboratory when they are recovered of the microbiology, virulence characteristics, and infectious disease syndromes associated with the genus Aeromonas have from clinical specimens. To compound this problem, new species, taxa, and biogroups continue to be described, further combeen published since 1990 [13 -19], the increasing number of taxonomic changes in this genus, coupled with case reports plicating the identification process. In fact, there is such phylogenetic depth within the genus itself that a proposal to create and clinical series of various illnesses, dictates a reevaluation of the role of aeromonads as etiologic agents of human disease. a family to house Aeromonas has been made [2].Although aeromonads were discovered ú100 years ago, only during the past 3 decades has their role in a variety of human Taxonomy illnesses been unquestionably proven (table 1). The role of Aeromonas species in some syndromes, such as bacterial gasSince the advent of polyphasic molecular approaches in the study of bacterial systematics [20,21], taxa in the genus Aerotroenteritis, is still speculative and the subject of much debate, with proponents and opponents of their role in diarrheal dismonas have undergone a numb...

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