Search

Your search keyword '"Papp, John"' showing total 494 results
Start Over Author "Papp, John"

Refine your results

more »

more »

more »

more »

more »

more »
494 results on '"Papp, John"'

102. Development of a rectal sexually transmitted infection (STI) Model in Rhesus macaques using Chlamydia trachomatis serovars E and L2.

Author

Henning, Tara R., Morris, Monica, Ellis, Shanon, Kelley, Kristen, Phillips, Christi, Ritter, Jana, Jones, Tara, Nachamkin, Eli, Chen, Cheng Y., Hong, Jaeyoung, Kang, Joseph, Patton, Dorothy, McNicholl, Janet, Papp, John, and Kersh, Ellen N.

Subjects
SEXUALLY transmitted diseases, RHESUS monkeys, HIV, CYTOKINES, MEN who have sex with men
Abstract

Background Rectal STI coinfection models enhance the understanding of rectal HIV transmission risk factors. Materials and Methods Rhesus macaques (n=9) were exposed to one of three rectal Chlamydia trachomatis (CT) challenges: C. trachomatis L2 (CT-L2); C. trachomatis serovar E (CT-E), followed by CT-L2; or CT-E, treatment/clearance, then CT-L2. Infections were monitored by PCR. Weekly blood and rectal secretion/lavage samples were collected for cytokine analyzes and/or epithelial sloughing, occult, and overt blood determinations. Results Chlamydial infections were successfully established in each animal, with varying degrees of persistence. Mucosal IL-1beta was upregulated in animals consecutively infected with CT-E then CT-L2 ( P=.05). Epithelial sloughing was also significantly increased post-infection in this group ( P=.0003). Conclusions This study demonstrates successful rectal infection of rhesus macaques with CT-E and CT-L2 and describes measures of assessing rectal inflammation and pathology. Different infection strategies yield varying inflammatory and pathologic outcomes, providing well-described models for future SIV/SHIV susceptibility studies. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

109. Curve and surface fitting to measured data with a B-spline approach

Author

Berglund, Tomas, Greppe, Anders, Thorén, Johan, and Papp, John

Subjects
Datavetenskap (datalogi), Computer Sciences
Abstract

Report in the Project course in Mathematics, MAM088, 1998/1999. Department of Mathematics, Luleå University of Technology, Sweden Godkänd; 1999; 20100601 (ysko)

Published
1999

111. 1290Comparison of Neisseria gonorrhoeae Antimicrobial Susceptibility among Urogenital Isolates Obtained from Women, Men Who Have Sex with Women, and Men Who Have Sex with Men

Author

Kidd, Sarah, primary, Moore, Page C., additional, Kirkcaldy, Robert D., additional, Susan, S., additional, Wiesenfeld, Harold C., additional, Papp, John R., additional, Kerndt, Peter R., additional, Venkatasubramanian, Lalitha, additional, Ghanem, Khalil G., additional, and Hook, Edward W., additional

Published
2014
Full Text
View/download PDF

114. Neisseria gonorrhoeaeAntimicrobial Resistance Among Men Who Have Sex With Men and Men Who Have Sex Exclusively With Women: The Gonococcal Isolate Surveillance Project, 2005–2010

Author

Kirkcaldy, Robert D., primary, Zaidi, Akbar, additional, Hook, Edward W., additional, Holmes, King K., additional, Soge, Olusegun, additional, del Rio, Carlos, additional, Hall, Geraldine, additional, Papp, John, additional, Bolan, Gail, additional, and Weinstock, Hillard S., additional

Published
2013
Full Text
View/download PDF

115. Comparing the disk-diffusion and agar dilution tests for Neisseria gonorrhoeae antimicrobial susceptibility testing.

Author

Hsi Liu, Taylor Jr, Thomas H., Pettus, Kevin, Johnson, Steve, Papp, John R., and Trees, David

Subjects
NEISSERIA gonorrhoeae, CEPHALOSPORINS, ANTI-infective agents
Abstract

Background: We assessed the validity of testing for antimicrobial susceptibility of clinical and mutant Neisseria gonorrhoeae (GC) isolates by disk diffusion in comparison to agar dilution, and Etest® (bioMerieux, France), respectively, for three third generation extended spectrum cephalosporins (ESC): ceftriaxone (CRO), cefixime (CFX), and cefpodoxime (CPD). Methods: One hundred and five clinical isolates and ten laboratory-mutants were tested following Clinical Laboratory Standard Institute (CLSI) and manufacturer's standards for each of the three methods. The measured diameters by the disk diffusion method were tested for correlation with the MIC values by agar dilution. In addition, comparisons with the Etest® were made. Categorical results for concordance, based on standard CLSI cutoffs, between the disk diffusion and the other two methods, respectively, were tested using the Chi-square statistics. Reproducibility was tested for CFX across a 6-month interval by repeated disk tests. Results: Across all 115 specimens, the disk diffusion tests produced good categorical agreements, exhibiting concordance of 93.1%, 92.1%, and 90.4% with agar dilution and 93.0%, 92.1%, and 90.4% with Etest®, for CRO, CFX, and CPD, respectively. Pearson correlations between disk-diffusion diameters and agar dilution MIC's were -0.59, -0. 67, and -0.81 for CRO, CFX, and CPD, respectively. The correlations between disk diffusion and Etest® were -0.58, -0. 73, and -0.49. Pearson correlation between the CFX disk readings over a 6-month interval was 91%. Conclusions: Disk diffusion tests remain to be a useful, reliable and fast screening method for qualitative antimicrobial susceptibility testing for ceftriaxone, cefixime, and cefpodoxime. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

120. Ongoing Sexually Transmitted Disease Acquisition and Risk-Taking Behavior Among US HIV-Infected Patients in Primary Care: Implications for Prevention Interventions

Author

Mayer, Kenneth H., primary, Bush, Timothy, additional, Henry, Keith, additional, Overton, Edgar T., additional, Hammer, John, additional, Richardson, Jean, additional, Wood, Kathy, additional, Conley, Lois, additional, Papp, John, additional, Caliendo, Angela M., additional, Patel, Pragna, additional, and Brooks, John T., additional

Published
2012
Full Text
View/download PDF

121. A Descriptive Analysis of STD Prevalence Among Urban Pregnant African-American Teens: Data From a Pilot Study

Author

DiCLEMENTE, RALPH, DiCLEMENTE, RALPH, WINGOOD, GINA, CROSBY, RICHARD, ROSE, EVE, LANG, DELIA, PILLAY, ALLAN, PAPP, JOHN, FAUSHY, CAROL, DiCLEMENTE, RALPH, DiCLEMENTE, RALPH, WINGOOD, GINA, CROSBY, RICHARD, ROSE, EVE, LANG, DELIA, PILLAY, ALLAN, PAPP, JOHN, and FAUSHY, CAROL

Abstract

Objective: To assess the prevalence of sexually transmitted diseases (STDs) among a sample of African- American adolescent females at the time of their first prenatal visit and to assess key characteristics of those testing positive for sexually transmitted diseases. The study also determined differences in these characteristics between adolescents who were and those who were not diagnosed with an STD. Methods: One-hundred-and-seventy pregnant African- American adolescents (aged 14–20 years; mean 17.5 years) receiving their first prenatal visit were recruited at a prenatal clinic located in a large urban hospital. Biological assessment included nucleic acid amplification testing for gonococcal, chlamydial, and trichomonal infections. Rapid plasma reagin testing assessed infection with syphilis. A self-administered survey and in-depth face-to-face interview were used to collect detailed information assessing adolescents’ sociodemographic characteristics, psychosocial indices, and their recent sexual risk behaviors. Data were analyzed using Student’s ttests and contingency table analyses, respectively, for continuous and categorical variables. Results: Overall, 23.5% tested positive for one of the four STDs. Thirteen percent were infected with Chlamydia trachomatis, 1.2% with Neisseria gonorrhoeae, 8.9% with Trichomonas vaginalis, and 1.2% with Treponema pallidum. More than one-half reported recent (past 6 months) treatment for an STD, 30% of these tested positive for at least one of the four STDs assessed. Adolescents testing positive for STDs held favorable attitudes toward condom use, but levels of sexual risk were generally high. There were no sociodemographic, psychosocial, and sexual-risk differences between those testing positive and negative. Conclusion: Findings support STD screening efforts targeting pregnant adolescents. Providing clinic-based counseling and prevention education programs to pregnant adolescents regardless of apparent risk factors may also b

Published
2004

130. Mineral resource of the month: niobium(columbium)

Author

Papp, John F.

Subjects
Niobium -- Usage, Niobium -- Consumption data, Niobium -- Composition, Mines and mineral resources -- United States, Earth sciences
Abstract

The article discusses importance of the mineral Niobium with its applications in different fields.

Published
2007

131. LETTERS.

Author

SCHMEIER, J., REBENTISCH, M. R., MCGUERTY, PAUL, ADAMS, PATRICK, KRUGER, HANS W., HAJENIAN, HENRY S., POWEL, WILLIAM H., CAPOZZI, FRANCIS C., MCALLISTER, J. E., RUDOLPH, JAMES S., DE PAPP, JOHN L. E., DOWNING, CHARLES J., APFEL, PHIL, HERBERT, ARTHUR, and O'BRIEN, JAMES P.

Subjects
YELLOW fever
Published
1949

132. Sexually Transmissible Infections and Prostate Cancer Risk

Author

Huang, Wen-Yi, primary, Hayes, Richard, additional, Pfeiffer, Ruth, additional, Viscidi, Raphael P., additional, Lee, Francis K., additional, Wang, Yun F., additional, Reding, Douglas, additional, Whitby, Denise, additional, Papp, John R., additional, and Rabkin, Charles S., additional

Published
2008
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results