title: Neutrophil chemotaxis in refractory cases of periodontitis.
abstract: Refractory cases of periodontitis were assayed for chemotaxis of polymorphonuclear neutrophilic leukocytes using an in vivo assay. 9 refractory patients and 9 normal patients were studied. When cell counts were plotted against time, normal patients showed a single peak at 25-30 min after casein (chemo-attractant) challenge, whereas refractory patients showed 2 and 3 peaks of PMN's at varying time intervals. 5 of the refractory patients showed this pattern in tests of normal sulci as well as deep periodontal pockets. 4 of the refractory cases showed a double peak in tests of deep periodontal pockets. This suggests that some refractory cases have an intrinsic chemotactic defect of polymorphonuclear neutrophils while in others the defect may be a secondary phenomenon. It appears that patients with refractory periodontitis have the characteristic cell response that was reported for LJP.
authors.forename: H I
authors.initials: HI
authors.lastname: Oshrain
authors.forename: B
authors.initials: B
authors.lastname: Telsey
authors.forename: I D
authors.initials: ID
authors.lastname: Mandel
mesh_terms: D000328:Adult; D000368:Aged; D002634:Chemotaxis, Leukocyte; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D009504:Neutrophils / Q000502:physiology; D010518:Periodontitis / Q000097:blood* / Q000503:physiopathology; D013997:Time Factors