American Society for Microbiology
1071-412X
1098-6588
Cơ quản chủ quản: N/A
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Các bài báo tiêu biểu
Inhibition of the Activities of Matrix Metalloproteinases 2, 8, and 9 by ChlorhexidineABSTRACT
Matrix metalloproteinases (MMPs) are a host cell-derived proteolytic enzyme family which plays a major role in tissue-destructive inflammatory diseases such as periodontitis. The aim of the present study was to evaluate the inhibitory effect of chlorhexidine (CHX) on MMP-2 (gelatinase A), MMP-9 (gelatinase B), and MMP-8 (collagenase ... ... hiện toàn bộ
Tập 6 Số 3 - Trang 437-439 - 1999
Calcein-Acetyoxymethyl Cytotoxicity Assay: Standardization of a Method Allowing Additional Analyses on Recovered Effector Cells and SupernatantsABSTRACT Cytotoxicity assays provide an in vitro evaluation of the lytic activity of NK and T cells against tumors or transformed cells. However, none of these methods allow the recovery of cells or supernatants after the assay. We standardized a microcytotoxicity test using calcein-acetoxymethyl (calcein-AM) dye that requires very small quantities of cells while ma... ... hiện toàn bộ
Tập 8 Số 6 - Trang 1131-1135 - 2001
Utility of flow cytometric detection of CD69 expression as a rapid method for determining poly- and oligoclonal lymphocyte activationCD69 is a lymphoid activation antigen whose rapid expression (< or = 2 h postactivation) makes it amenable for the early detection of T-cell activation and for subset activation analyses. In the present study we evaluated the utility of flow cytometric detection of CD69 expression by T cells activated with polyclonal stimuli (anti-CD3 and staphylococcal enterotoxin B [SEB]) and oligoclo... ... hiện toàn bộ
Tập 3 Số 3 - Trang 301-304 - 1996
Will immunogenicity limit the use, efficacy, and future development of therapeutic monoclonal antibodies?While monoclonal antibodies show promise for use in the treatment of a variety of disease states, including cancer, autoimmune disease, and allograft rejection, generation of anti-antibody responses still remains a problem. For example, 50% of the patients who receive OKT3 produce blocking antibodies that interfere with its binding to T cells, thus decreasing the therapeutic effect (51). H... ... hiện toàn bộ
Tập 1 Số 4 - Trang 365-372 - 1994
T Cells and T-Cell Cytokine Transcripts in the Synovial Membrane in Patients with OsteoarthritisABSTRACT The synovial membrane in osteoarthritis (OA) often exhibits inflammatory infiltrates, but the role of T cells in these infiltrates is not known. T-cell activation antigens were analyzed by immunohistochemistry, and T-cell cytokine transcripts were measured by competitive PCR in synovial membranes from patients with OA and rheumatoid arthritis (RA). Lymphoid... ... hiện toàn bộ
Tập 5 Số 4 - Trang 430-437 - 1998
Quantitative Fluorogenic PCR Assay for Measuring Ovine Herpesvirus 2 Replication in SheepABSTRACT
A fluorogenic PCR specific for ovine herpesvirus 2 (OvHV-2) DNA was developed and compared to a previously established conventional seminested PCR. Testing of a total of 152 blood samples from both positive and negative animals revealed that the results of both assays corresponded to each other in 100% of the cases. A second fluorogenic PCR for g... ... hiện toàn bộ
Tập 8 Số 1 - Trang 123-128 - 2001
A Flow Cytometric Opsonophagocytic Assay for Measurement of Functional Antibodies Elicited after Vaccination with the 23-Valent Pneumococcal Polysaccharide VaccineABSTRACT Opsonophagocytosis is the primary mechanism for clearance of pneumococci from the host, and the measurement of opsonophagocytic antibodies appears to correlate with vaccine-induced protection. We developed a semiautomated flow cytometric opsonophagocytosis assay using HL-60 granulocytes as effector cells and nonviable 5,6-carboxyfluorescein, succinimidyl es... ... hiện toàn bộ
Tập 6 Số 4 - Trang 581-586 - 1999
Oligonucleotide primers designed to differentiate pathogenic pseudomonads on the basis of the sequencing of genes coding for 16S-23S rRNA internal transcribed spacersUniversal primers targeting conserved sequences flanking the 3' end of the 16S and the 5' end of the 23S rRNA genes (rDNAs) were used to amplify the 16S-23S rDNA internal transcribed spacers (ITS) from eight species of pseudomonads which have been associated with human infections. Amplicons from reference strains of Pseudomonas aeruginosa, Pseudomonas cepacia, Pseudomonas gladioli, Pseudom... ... hiện toàn bộ
Tập 2 Số 4 - Trang 448-453 - 1995
A New Method with General Diagnostic Utility for the Calculation of Immunoglobulin G AvidityABSTRACT
The reference method for immunoglobulin G (IgG) avidity determination includes reagent-consuming serum titration. Aiming at better IgG avidity diagnostics, we applied a logistic model for the reproduction of antibody titration curves. This method was tested with well-characterized serum panels for cytomegalovirus, Epstein-Barr virus,... ... hiện toàn bộ
Tập 6 Số 5 - Trang 725-728 - 1999
Diagnosis of Rickettsial Diseases Using Samples Dried on Blotting PaperABSTRACT The use of filter paper is an inexpensive and convenient method for collecting, storing, and transporting blood samples for serological studies. In addition, samples occupy little space and can be readily transported without refrigeration. Rickettsial diseases often evolve according to an epidemic mode and are now considered reemerging diseases, especially ... ... hiện toàn bộ
Tập 6 Số 4 - Trang 483-488 - 1999