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Priya Loomba, Vickie Knight, Anna McNulty
UNLABELLED: Background This study aimed to describe oropharyngeal chlamydia (OCT) in gay and bisexually active men (GBM) attending a large urban sexual health clinic in Sydney and determine what proportion of cases would be missed if screening was not routine. METHODS: Retrospective data were extracted for all GBM with a positive OCT result between 1 October 2012 and 31 April 2014. The control group consisted of patients who had a negative OCT result on their first visit during the study period, and each patient was only counted once...
April 2016: Sexual Health
Ricardo Gianecini, Claudia Oviedo, Cristina Guantay, Laura Piccoli, Graciela Stafforini, Patricia Galarza
BACKGROUND: Penicillinase-producing Neisseria gonorroheae (PPNG) was first isolated in 1976. PPNG strains carrying bla TEM-1 and bla TEM-135 gene have been described in different countries. Recently, a novel bla TEM-220 allele was detected in PPNG isolates carrying Toronto/Rio plasmid. The prevalence and characteristics of TEM-220 strains worldwide are unknown, and therefore, it needs to be studied. The purpose of this study was to detect bla TEM-220 gene in PPNG strains possessing Toronto/Rio plasmid over a period of ten years in Argentina, and to evaluate the proportion of isolates producing non-TEM-220 containing the T539C substitution in the bla TEM allele...
2015: BMC Infectious Diseases
María Carolina Ortiz, Claudia Lefimil, Paula I Rodas, Rolando Vernal, Mercedes Lopez, Claudio Acuña-Castillo, Mónica Imarai, Alejandro Escobar
Current data suggest that Neisseria gonorrhoeae is able to suppress the protective immune response at different levels, such as B and T lymphocytes and antigen-presenting cells. The present report is focused on gonococcus evasion mechanism on macrophages (MФ) and its impact in the subsequent immune response. In response to various signals MФ may undergo classical-M1 (M1-MФ) or alternative-M2 (M2-MФ) activation. Until now there are no reports of the gonococcus effects on human MФ polarization. We assessed the phagocytic ability of monocyte-derived MФ (MDM) upon gonococcal infection by immunofluorescence and gentamicin protection experiments...
2015: PloS One
Jason D Bell, Ingrid L Bergin, Kelsey Schmidt, Melissa K Zochowski, David M Aronoff, Dorothy L Patton
Pelvic inflammatory disease (PID) is a global health concern that is associated with significant morbidity and is a major cause of infertility. Throughout history animals have been used for anatomical studies and later as models of human disease. In particular, nonhuman primates (NHPs) have permitted investigations of human disease in a biologically, physiologically, and anatomically similar system. The use of NHPs as human PID models has led to a greater understanding of the primary microorganisms that cause disease (e...
2011: Infectious Diseases in Obstetrics and Gynecology
Esteban Veiga, Víctor de Lorenzo, Luis Angel Fernández
In this report we investigate the capacity of bacterial autotransporters (AT) to translocate folded protein domains across the outer membrane (OM). Polypeptides belonging to the AT family contain a C-terminal domain that supports the secretion of the N-domain (the passenger) across the OM of Gram-negative bacteria. Despite some controversial data, it has been widely accepted that N-passenger domains of AT must be unfolded and devoid of disulphide bonds for efficient translocation. To address whether or not AT are able to translocate folded protein domains across the OM, we employed several types of recombinant antibodies as heterologous N-passengers of the transporter C-domain of IgA protease (C-IgAP) of Neisseria gonorroheae...
May 2004: Molecular Microbiology
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