Identification and comparative analysis of the lactoferrin and transferrin receptors among clinical isolates of gonococci.
Neisseria gonorrhoeae expresses receptors for both lactoferrin (LF) and transferrin (TF). To determine whether qualitative or quantitative changes in these receptors, or both, correlate with the pattern of disease due to N. gonorrhoeae, a dot binding assay with whole cells was used to measure the absolute receptor levels expressed during iron-limited growth of strains isolated from asymptomatic patients and patients with urethritis, cervicitis, pelvic inflammatory disease and disseminated infection. Lactoferrin and transferrin receptor complexes were purified by affinity chromatography and their protein profiles were compared. The molecular weights of the LF and TF receptor complexes from a representative sample of gonococci were homogeneous. We conclude that there is no relationship between the LF and TF receptor levels and disease manifestation, auxotype or serotype.
Lee
B C
BC
Department of Microbiology and Infectious Diseases, University of Calgary, Alberta, Canada.
Bryan
L E
LE
D002353:Carrier State / Q000382:microbiology*; D002462:Cell Membrane / Q000032:analysis; D002846:Chromatography, Affinity; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D006069:Gonorrhea / Q000382:microbiology*; D006801:Humans; D007781:Lactoferrin / Q000378:metabolism; D008297:Male; D009344:Neisseria gonorrhoeae / Q000032:analysis / Q000378:metabolism* / Q000648:ultrastructure; D000292:Pelvic Inflammatory Disease / Q000382:microbiology; D011956:Receptors, Cell Surface / Q000032:analysis*; D011990:Receptors, Transferrin / Q000032:analysis*; D014526:Urethritis / Q000382:microbiology; D002575:Uterine Cervicitis / Q000382:microbiology
D011956:Receptors, Cell Surface; D011990:Receptors, Transferrin; C038340:lactoferrin receptors; D007781:Lactoferrin