Gestational pyelonephritis - associated Escherichia coli isolates represent a nonrandom, closely related population - 11/09/11
Abstract |
OBJECTIVE: A select group of Escherichia coli strains known as uropathogenic cause pyelonephritis in nonpregnant individuals. We investigated whether Escherichia coli from gestational pyelonephritis represent a random population or possess common uropathogenic characteristics. STUDY DESIGN: Repetitive element sequence-based polymerase chain reaction, plasmid profiles, hemolysin, and O serotypes were assayed from Escherichia coli isolates of 57 pregnant patients with acute pyelonephritis at different gestational ages. RESULTS: The majority of the first trimester isolates fell primarily into repetitive element sequence-based patterns 1 and 3 and O6, O15, and O75 serotypes. Second-trimester isolates had multiple patterns, with high-frequency repetitive element sequence-based polymerase chain reaction patterns 1 and 5 and an unknown (OX) serotype. Pattern 3, predominantly O75 serotype, was found primarily among third-trimester isolates. CONCLUSION: It is likely that Escherichia coli associated with acute pyelonephritis during different trimesters of pregnancy represents nonrandom closely related isolates, and some of these strains may be characteristic in pregnant patients only. (AM J OBSTET GYNECOL 1996;174:983-9.)
Le texte complet de cet article est disponible en PDF.Keywords : Pregnancy, pyelonephritis, deoxyribonucleic acid fingerprinting, Escherichia coli
Plan
 | From the Division of Gynecologic Infectious Disease, Department of Obstetrics and Gynecology,a the Department of Microbiology and Immunology,b and the Division of Biostatistics, Department of Preventive Medicine and Community Health,c University of Texas Medical Branch at Galveston, and the Department of Gynecology and Obstetrics, Hennepin County Medical Center.d |
| Supported by National Institutes of Health grant No. NIH R01 DK42029 (B. J. N). |
 | Reprint requests: Bogdan Nowicki, MD, PhD, The University of Texas Medical Branch at Galveston, Department of Obstetrics and Gynecology, 301 University Blvd., Galveston, TX 77555-1062. |
| 0002-9378/96 $5.00 + 0 6/1/68534 |
Vol 174 - N° 3
P. 983-989 - mars 1996 Retour au numéro
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