title: Formation of bobierrite (magnesium phosphate) crystal aggregates by bacteria from human urine and renal calculi.
abstract: The formation of extracellular crystal aggregates of bobierrite [Mg3(PO4)2.8H2O] by bacteria isolated from renal calculi and urine of urolithiasic patients is found with the use of B-17 and B-43 media. The crystal aggregates were observed in the colonies as deposits of brown-yellow coloration, and were identified by X-ray powder diffraction, chemical analysis and scanning electron microscopy. The production of bobierrite by bacteria from human urine and renal calculi implies further versatility of crystal formation by microorganisms, and it may be interesting to investigate the possible relationships between calculi precipitation and urinary infection.
authors: Department of Microbiology, Faculty of Pharmacy, University of Granada, Spain.
authors: A
authors: A
authors: del Moral
authors: M A
authors: MA
authors: Rivadeneyra
authors: E
authors: E
authors: Roldán
authors: I
authors: I
authors: Perez-García
authors: A
authors: A
authors: Ramos-Cormenzana
authors: A
authors: A
authors: García-Cervigón
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001437:Bacteriuria / Q000382:microbiology*; D003460:Crystallization; D006801:Humans; D066298:In Vitro Techniques; D007669:Kidney Calculi / Q000382:microbiology*; D008274:Magnesium / Q000378:metabolism*; D017616:Magnesium Compounds; D008855:Microscopy, Electron, Scanning; D010710:Phosphates / Q000378:metabolism*
chemical_list: D017616:Magnesium Compounds; D010710:Phosphates; C030781:magnesium phosphate; D008274:Magnesium