Serratia Marcescens


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Serratia marcescens

[sə‚rā·shē·ə mär′ses·əns]
(microbiology)
A human pathogen that is intrinsically resistant to many antimicrobials (for example, cephalosporins, polymyxins, and nitrofurans) and occurs predominantly in hospitalized patients.

Serratia Marcescens

 

a species of bacteria among the pigmented microorganisms. The gram-negative, motile, peritrichous, nonspore-forming bacilli are 0.6–1.0 micrometer long and 0.5 micrometer wide. According to metabolism, the bacteria are facultatively anaerobic. On an agar surface they form smooth or grainy dark and bright red columns with a metallic shine. Serratiamarcescens live in the soil, in water, and in foodstuffs. The bacteria develop in milk and on bread when there is increased moisture. The milk and bread turn reddish and may not be sold. The bacteria are a potential pathogen for animals and man and can cause suppuration.

References in periodicals archive ?
Cyclic AMP negatively regulates prodigiosin production by Serratia marcescens. Res Microbiol, 2010; 161(2): 158-167.
Nosocomial infections with Serratia marcescens are beginning to take a large scale in neonatal intensive care unit, often in epidemic form.
Due to the production of AmpC beta-lactamase, Serratia marcescens is generally resistant to penicillins and first- and second-generation cephalosporins, making it imperative to consider susceptibilities when determining appropriate antibiotic therapy [15].
20 6.2 Serratia marcescens 18 5.6 Serratia liquefaciens 1 0.3 Serratia funticola 1 0.3 Escherichia coli 4 1.2 Enterobacter spp.
The model used for ChiA from Serratia marcescens (Equation 1) fit satisfactorily to the experimental data with colloidal chitin, while for 4-MUF kinetics the Michaelis-Menten equation for substrate inhibition fit better (Figure 6B).
In nonvenomous snakes, such as Python regius and Clelia scyntalina, Serratia marcescens, M.
pneumoniae 7 (58.3) 5 (41.7) Neisseria meningitides 0 11 (100) Pseudomonas aeruginosa 5 (100) 0 Pseudomonas putida 1 (100) 0 Salmonella group B 0 1 (100) Serratia marcescens 0 1 (100) Total 58 59 Microorganism Total Gram-positive Abiotrophia species 1 Enterococcus faecalis 7 Enterococcus gallinarum 1 Gemella haemolysans 1 Leuconostoc species 1 Listeria monocytogenes 3 Staphylococcus aureus 1 Staphylococcus capitis 2 Staphylococcus epidermidis 16 Staphylococcus haemolyticus 2 Streptococcus agalactiae 3 Streptococcus bovis II 1 Streptococcus intermedius 1 Streptococcus milleri 1 Streptococcus mitis 1 Streptococcus pneumoniae 19 Streptococcus salivarius 1 Gram-negative Acinetobacter baumannii 8 Acinetobacter lwoffii 3 Brucella spp.
The rest of the AmpC b-lactamase producers were Klebsiella pneumoniae 8 (5.7%), Citrobacter freundii 8 (5.7%), Klebsiella oxytoca 4 (2.8%), Serratia marcescens 3 (2.1%), Acinetobacter baumannii 2 (1.4%), Pseudomonas aeruginosa 1 (0.7%) and Aeromonas hydrophila 1 (0.7%) (Table-I).