Precipitation of struvite in urine medium by urease-positive and urease-negative Yersinia strains.
Yersinia strains either urease-positive or urease-negative were examined for precipitation of struvite in human urine at 25 and 37 degrees C. All urease-positive strains and 8 out of 10 urease-negative strains showed the ability to produce these crystals. Incubation time required for precipitation was longer for urease-negative strains and quantity of struvite formed was higher in urease-positive ones. Regarding incubation temperature, no significant influence has been observed.
Rivadeneyra
M A
MA
Departamento de Microbiología, Facultad de Farmacia, Universidad de Granada, España.
Calvo
C
C
González-Torres
M C
MC
Pérez-García
I
I
Ramos-Cormenzana
A
A
D006801:Humans; D066298:In Vitro Techniques; D008274:Magnesium / Q000652:urine*; D017616:Magnesium Compounds; D010710:Phosphates / Q000652:urine*; D000069877:Struvite; D014510:Urease / Q000032:analysis; D014545:Urinary Calculi / Q000737:chemistry / Q000382:microbiology*; D015007:Yersinia / Q000378:metabolism*; D015008:Yersinia enterocolitica / Q000378:metabolism*
D017616:Magnesium Compounds; D010710:Phosphates; D000069877:Struvite; D014510:Urease; D008274:Magnesium