Pseudomonas mesophilica and an unnamed taxon, clinical isolates of pink-pigmented oxidative bacteria

Abstract

Twenty-one strains of pink-pigmented bacteria, isolated from human clinical specimens and an environmental source, were compared with Pseudomonas mesophilica ATCC 29983 and Protaminobacter ruber ATCC 8457. These isolates were gram-negative, oxidative rods which were motile by means of a single polar flagellum; gave positive catalase, indophenol oxidase, urease, and amylase reactions; and grew slowly at 30°C. Fourteen isolates conformed to the designated type strains Pseudomonas mesophilica ATCC 29983 and Protaminobacter ruber ATCC 8457. The remaining seven strains represented an undescribed taxon. These pink bacteria appear to be invaders of debilitated patients with an underlying chronic disease.

Methylobacterium mesophilicum cellulitis and lymphangitis following a dog bite

“…The name was later changed to Methylobacterium extorquens and then to M. mesophilicum. Although some genetic differences exist, M. mesophilicum is generally considered syn-onymous with Pseudomonas mesophilica, which has also been reclassified as M. mesophilicum [5,6]. It is a common environmental isolate in different habitats such as leaf surfaces, soil, water, sewage, air and rice grain [7][8][9].…”

A Methylobacterium-like organism from algal crusts covering silicone rubber electric insulators in Africa

“…Methylobacterium species are common and have been isolated from a number of environments, including external and internal parts of various plants (Austin and Goodfellow 1979;Elliot 1998;Pirttila et al 2000;Sy et al 2001aSy et al , 2001b, soils (De Marco et al 2000), lakes (Patt et al 1976) and hospital environments (Gilardi and Faur 1984). The presence of this organism in algal crusts covering electrical insulators has not been reported previously.…”

Efficacy of chemical dosing methods for isolating nontuberculous mycobacteria from water supplies of dialysis centers

“…Although the extent of their relationship to disease has not been clearly demonstrated, SGP have been associated with infections (28) and have been recovered from a variety of clinical specimens from patients with debilitating chronic disease (19). These organisms, which have been tentatively characterized as P. mesophilica and related taxons (2,19), appear to be a heterogeneous group of organisms with regard to physiologic and resistance characteristics. That some strains of SGP appear to be more susceptible to 1% aqueous HCHO, as evidenced by their isolation only from undosed samples, may provide an additional parameter for subgrouping these organisms.…”