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Neisseria gonorrhoeae

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https://www.readbyqxmd.com/read/29329177/a-comparison-of-real-time-polymerase-chain-reaction-assays-for-the-detection-of-antimicrobial-resistance-markers-and-sequence-typing-from-clinical-nucleic-acid-amplification-test-samples-and-matched-neisseria-gonorrhoeae-culture
#1
Shelley W Peterson, Irene Martin, Walter Demczuk, Linda Hoang, John Wylie, Brigitte Lefebvre, Annie-Claude Labbé, Prenilla Naidu, David Haldane, Michael R Mulvey
Real-time polymerase chain reaction (PCR) assays to detect antimicrobial resistance-associated mutations were tested on Neisseria gonorrhoeae-positive clinical samples with matched isolates. Of the nucleic acid amplification tests/cultures, 87.7% (64/73), 98.6% (72/73), and 98.4% (62/63) predicted cephalosporin, ciprofloxacin, and azithromycin susceptibilities, respectively. N. gonorrhoeae multiantigen sequence type was correctly predicted for 98.7% (79/80), and 13 of 58 N. gonorrhoeae-negative specimens showed false-positive results...
February 2018: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/29329176/a-cost-analysis-of-gyrase-a-testing-and-targeted-ciprofloxacin-therapy-versus-recommended-2-drug-therapy-for-neisseria-gonorrhoeae-infection
#2
Lao-Tzu Allan-Blitz, Peera Hemarajata, Romney M Humphries, Adriane Wynn, Eddy R Segura, Jeffrey D Klausner
BACKGROUND: Novel approaches to combating drug-resistant Neisseria gonorrhoeae infections are urgently needed. Targeted therapy with ciprofloxacin has been made possible by a rapid assay for genotyping the gyrase A (gyrA) gene; a nonmutated gene reliably predicts susceptibility to ciprofloxacin. METHODS: We determined the costs of running the gyrA assay, 500 mg of ciprofloxacin, 250 mg of ceftriaxone injection, and 1000 mg of azithromycin. Cost estimates for gyrA testing included assay reagents and labor...
February 2018: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/29324629/susceptibility-of-neisseria-gonorrhoeae-to-gentamicin-gonococcal-isolate-surveillance-project-2015-2016
#3
Laura M Mann, Robert D Kirkcaldy, John R Papp, Elizabeth A Torrone
The gentamicin minimum inhibitory concentrations (MICs) of Neisseria gonorrhoeae isolates were determined. Seventy-three percent of isolates demonstrated an MIC range of 8 to 16 μg/mL, and 27% demonstrated an MIC of 4 μg/mL or less. Significant associations between gentamicin MIC and resistance or reduced susceptibility to other antimicrobials were found.
February 2018: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/29311079/neisseria-cinerea-with-high-ceftriaxone-mic-is-an-origin-of-ceftriaxone-and-cefixime-resistance-mediating-pena-sequences-in-neisseria-gonorrhoeae
#4
Gene Igawa, Yuka Yamagishi, Ken-Ichi Lee, Misato Dorin, Ken Shimuta, Hiroyuki Suematsu, Shu-Ichi Nakayama, Hiroshige Mikamo, Magnus Unemo, Makoto Ohnishi
Mosaic penA alleles have caused most of the cephalosporin resistance in Neisseria gonorrhoeae, but their evolution is mostly unknown. The Neisseria cinerea strain AM1601 (ceftriaxone MIC=1.0 μg/ml) penA caused ceftriaxone resistance (MIC=1 μg/ml) in a ceftriaxone-susceptible gonococcal strain. The 3' -terminal half of AM1601 penA was almost identical to that of the ceftriaxone-resistant gonococcal GU140106 and FC428 strains. N. cinerea can serve as a reservoir of ceftriaxone resistance-mediating penA sequences that are transferred to gonococci...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29304758/molecular-epidemiology-of-neisseria-gonorrhoeae-strains-circulating-in-indonesia-using-multi-locus-variable-number-tandem-repeat-analysis-mlva-and-neisseria-gonorrhoeae-multi-antigen-sequence-typing-ng-mast-techniques
#5
I Putu Yuda Hananta, Alje Pieter van Dam, Maarten Franciscus Schim van der Loeff, Mirjam Dierdorp, Carolien Marleen Wind, Hardyanto Soebono, Henry John Christiaan de Vries, Sylvia Maria Bruisten
BACKGROUND: Control of gonorrhea in resource-limited countries, such as Indonesia, is mostly unsuccessful. Examining Neisseria gonorrhoeae (Ng) transmission networks using strain typing might help prioritizing public health interventions. METHODS: In 2014, urogenital Ng strains were isolated from clients of sexually transmitted infection clinics in three Indonesian cities. Strains were typed using Multiple-Locus Variable Number Tandem Repeat (VNTR) Analysis (MLVA) and Ng Multi-Antigen Sequence Typing (NG-MAST) at the Public Health Service, Amsterdam, the Netherlands, and compared to Dutch strains collected from 2012 to 2015...
January 5, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29304083/combined-evaluation-of-sexually-transmitted-infections-in-hiv-infected-pregnant-women-and-infant-hiv-transmission
#6
Kristina Adachi, Jiahong Xu, Nava Yeganeh, Margaret Camarca, Mariza G Morgado, D Heather Watts, Lynne M Mofenson, Valdilea G Veloso, Jose Henrique Pilotto, Esau Joao, Glenda Gray, Gerhard Theron, Breno Santos, Rosana Fonseca, Regis Kreitchmann, Jorge Pinto, Marisa M Mussi-Pinhata, Mariana Ceriotto, Daisy Maria Machado, Yvonne J Bryson, Beatriz Grinsztejn, Jack Moye, Jeffrey D Klausner, Claire C Bristow, Ruth Dickover, Mark Mirochnick, Karin Nielsen-Saines
BACKGROUND: Sexually transmitted infections (STIs) including Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), Treponema pallidum (TP), and cytomegalovirus (CMV) may lead to adverse pregnancy and infant outcomes. The role of combined maternal STIs in HIV mother-to-child transmission (MTCT) was evaluated in mother-infant pairs from NICHD HPTN 040. METHODOLOGY: Urine samples from HIV-infected pregnant women during labor were tested by polymerase chain reaction (PCR) for CT, NG, and CMV...
2018: PloS One
https://www.readbyqxmd.com/read/29297237/species-specific-differences-in-regulation-of-macrophage-inflammation-by-the-c3a-c3a-receptor-axis
#7
Tathagat Dutta Ray, Samrawit Mekasha, Yanmei Liang, Bao Lu, Sanjay Ram, Robin R Ingalls
Complement is an important arm of the innate immune system. Recent studies have shown that products of complement pathway activation can interact directly with other innate immune signaling molecules, including TLRs and inflammasome family members, during some infectious and chronic inflammatory disorders. Activation of the complement system generates anaphylatoxins, such as C3a and C5a, which modulate inflammation. However, the biological effects of interactions between the anaphylatoxins with their receptors may vary across species...
January 1, 2018: Innate Immunity
https://www.readbyqxmd.com/read/29288183/performance-of-syndromic-management-for-the-detection-and-treatment-of-genital-chlamydia-trachomatis-neisseria-gonorrhoeae-and-trichomonas-vaginalis-among-women-attending-antenatal-well-woman-and-sexual-health-clinics-in-papua-new-guinea-a-cross-sectional-study
#8
Lisa M Vallely, Pamela Toliman, Claire Ryan, Glennis Rai, Johanna Wapling, Josephine Gabuzzi, Joyce Allen, Christine Opa, Gloria Munnull, Petronia Kaima, Benny Kombuk, Antonia Kumbia, Zure Kombati, Greg Law, Angela Kelly-Hanku, Handan Wand, Peter M Siba, Glen D L Mola, John M Kaldor, Andrew J Vallely
OBJECTIVE: Papua New Guinea (PNG) has among the highest estimated prevalences of genital Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV) of any country in the Asia-Pacific region. Diagnosis and treatment of these infections have relied on the WHO-endorsed syndromic management strategy that uses clinical presentation without laboratory confirmation to make treatment decisions. We evaluated the performance of this strategy in clinical settings in PNG...
December 29, 2017: BMJ Open
https://www.readbyqxmd.com/read/29285017/comparative-proteomics-analysis-of-neisseria-gonorrhoeae-strains-in-response-to-extended-spectrum-cephalosporins
#9
Sunanta Nabu, Ratana Lawung, Patcharee Isarankura-Na-Ayudhya, Sittiruk Roytrakul, Supamas Dolprasit, Sineenart Sengyee, Chartchalerm Isarankura-Na-Ayudhya, Virapong Prachayasittikul
Neisseria gonorrhoeae strains displaying reduced susceptibility and resistance to extended-spectrum cephalosporins (ESCs) are major public health concerns. Although resistance mechanisms of ESCs have extensively been studied, the proteome-wide investigation on the biological response to the antibiotic stress is still limited. Herein, a proteomics approach based on two-dimensional gel electrophoresis and MALDI-TOF/TOF-MS analysis was applied to investigate the global protein expression under ESC stresses of ESC-susceptible and ESC-reduced susceptible N...
2017: EXCLI Journal
https://www.readbyqxmd.com/read/29284768/fitz-hugh-curtis-syndrome-caused-by-gonococcal-infection-in-a-patient-with-systemic-lupus-erythematous-a-case-report-and-literature-review
#10
Darío A Rueda, Luisina Aballay, Lisandro Orbea, Diego A Carrozza, Paola Finocchietto, Silvia B Hernandez, Mariano M Volpacchio, Horacio di Fonzo
BACKGROUND Fitz-Hugh-Curtis (FHC) syndrome is a perihepatitis linked to inflammatory pelvic disease. It can be caused by Neisseria gonorrhoeae or Chlamydia trachomatis infections. FHC syndrome usually presents with pain in the right hypochondrium and fever, associated with symptoms and signs of pelvic infection in women. CASE REPORT We present the case of a 22-year-old woman with systemic lupus erythematous (SLE) who presented with polyarthritis, cutaneous lesions, and abdominal pain. The diagnosis of FHC syndrome was based on the findings of abdominal computerized tomography (CT) and the isolation of Neisseria gonorrhoeae (NG) in blood cultures...
December 29, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/29279442/surveillance-of-antimicrobial-susceptibilities-of-neisseria-gonorrhoeae-from-2013-to-2015-in-guangxi-province-china
#11
Wei Li, Bang-Yong Zhu, Shui-Qing Qin, Mao-Chun Yang, Ming Liang, Shao He, Huai-Zhong Chen, Quan Gan, Yin-Jie Huang, Jiang-Ping Wei, Ji-Zhao He, Zhen Chen, Jin Bu
Neisseria gonorrhoeae (N. gonorrhoeae) is a sexually transmitted pathogen popular worldwide with increased trend of resistance to antimicrobial treatment. We conducted this study to trace the antimicrobial susceptibilities of N. gonorrhoeae to penicillin, spectinomycin, ciprofloxacin, azithromycin, cefixime and ceftriaxone in Guangxi. Totally 303 NG isolates were sampled from patients infected with N. gonorrhoeae from five cities in Guangxi 2013-2015, and the antibiotic susceptibilities were tested by Agar dilution assay...
December 26, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29276602/the-eyes-have-it-an-unusual-case-of-escherichia-coli-ophthalmia-neonatorum-or-a-shifting-landscape
#12
Walid Mounir Maalouli, Michael Barclay Pitt
Despite dramatic declines in the incidence of ophthalmia neonatorum with universal prophylaxis, it remains a clinically important cause of eye disease in newborns. While clear guidelines exist for the treatment of the historically primary agents of ophthalmia neonatorum (Chlamydia trachomatis and Neisseria gonorrhoeae), it is less clear how to manage newborns with conjunctivitis secondary to other bacterial organisms, particularly those also frequently implicated in neonatal sepsis. We present the case of a 3-day-old well-appearing term infant with unilateral purulent conjunctivitis...
2017: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29276051/discovery-research-and-development-of-new-antibiotics-the-who-priority-list-of-antibiotic-resistant-bacteria-and-tuberculosis
#13
Evelina Tacconelli, Elena Carrara, Alessia Savoldi, Stephan Harbarth, Marc Mendelson, Dominique L Monnet, Céline Pulcini, Gunnar Kahlmeter, Jan Kluytmans, Yehuda Carmeli, Marc Ouellette, Kevin Outterson, Jean Patel, Marco Cavaleri, Edward M Cox, Chris R Houchens, M Lindsay Grayson, Paul Hansen, Nalini Singh, Ursula Theuretzbacher, Nicola Magrini
BACKGROUND: The spread of antibiotic-resistant bacteria poses a substantial threat to morbidity and mortality worldwide. Due to its large public health and societal implications, multidrug-resistant tuberculosis has been long regarded by WHO as a global priority for investment in new drugs. In 2016, WHO was requested by member states to create a priority list of other antibiotic-resistant bacteria to support research and development of effective drugs. METHODS: We used a multicriteria decision analysis method to prioritise antibiotic-resistant bacteria; this method involved the identification of relevant criteria to assess priority against which each antibiotic-resistant bacterium was rated...
December 21, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29262291/diagnosis-of-chlamydia-trachomatis-neisseria-gonorrhoeae-trichomonas-vaginalis-and-mycoplasma-genitalium-an-observational-study-of-testing-patterns-prevalence-and-co-infection-rates-in-northern-new-zealand
#14
Arlo Upton, Liselle Bissessor, Peter Lowe, Xiaoying Wang, Gary McAuliffe
Background: This study sought to determine community prevalence, epidemiology and testing patterns for sexually transmissible infections (STI) in northern New Zealand. Methods: A total of 2643 samples submitted for STI testing between 26 November 2015 and 7 December 2015 underwent analysis by Aptima Combo 2 (Hologic, San Diego, CA, USA), Trichomonas vaginalis (TV), and Mycoplasma genitalium (MG) assays. Results were analysed by patient demographics. Results: Four hundred and eleven pathogens were detected from 359 patients, with Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), TV, and MG detected in 178 (6...
December 21, 2017: Sexual Health
https://www.readbyqxmd.com/read/29247204/antibacterial-activity-of-ceramide-and-ceramide-analogs-against-pathogenic-neisseria
#15
Jérôme Becam, Tim Walter, Anne Burgert, Jan Schlegel, Markus Sauer, Jürgen Seibel, Alexandra Schubert-Unkmeir
Certain fatty acids and sphingoid bases found at mucosal surfaces are known to have antibacterial activity and are thought to play a more direct role in innate immunity against bacterial infections. Herein, we analysed the antibacterial activity of sphingolipids, including the sphingoid base sphingosine as well as short-chain C6 and long-chain C16-ceramides and azido-functionalized ceramide analogs against pathogenic Neisseriae. Determination of the minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) demonstrated that short-chain ceramides and a ω-azido-functionalized C6-ceramide were active against Neisseria meningitidis and N...
December 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29247013/whole-genome-sequencing-reveals-transmission-of-gonococcal-antibiotic-resistance-among-men-who-have-sex-with-men-an-observational-study
#16
Jason C Kwong, Eric P F Chow, Kerrie Stevens, Timothy P Stinear, Torsten Seemann, Christopher K Fairley, Marcus Y Chen, Benjamin P Howden
OBJECTIVES: Drug-resistant Neisseria gonorrhoeae are now a global public health threat. Direct transmission of antibiotic-resistant gonococci between individuals has been proposed as a driver for the increased transmission of resistance, but direct evidence of such transmission is limited. Whole-genome sequencing (WGS) has superior resolution to investigate outbreaks and disease transmission compared with traditional molecular typing methods such as multilocus sequence typing (MLST) and N...
December 15, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/29240786/time-trend-analysis-2009-2016-of-antimicrobial-susceptibility-in-neisseria-gonorrhoeae-isolated-in-italy-following-the-introduction-of-the-combined-antimicrobial-therapy
#17
Paola Stefanelli, Maria Fenicia Vescio, Maria Paola Landini, Ivano Dal Conte, Alberto Matteelli, Antonio Cristaudo, Marina Gaino, Marco Cusini, Anna Maria Barbui, Antonella Mencacci, Rosella De Nittis, Valeria Ghisetti, Elena Stroppiana, Anna Carannante
INTRODUCTION: Neisseria gonorrhoeae (NG) antimicrobial susceptibility trends to azithromycin, cefixime and ceftriaxone were analyzed, from 2009 to 2016, to monitor changing antimicrobial susceptibility concomitant with the change in prescribing practice in 2012 from cefixime, or ceftriaxone, to ceftriaxone plus azithromycin. Patient characteristics predictive to be infected by antibiotic resistant N. gonorrhoeae were estimated. Finally, the protocol for the treatment of gonorrhoea, in comparison with the international guidelines, was also evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/29240781/comparing-mail-in-self-collected-specimens-sent-via-united-states-postal-service-versus-clinic-collected-specimens-for-the-detection-of-chlamydia-trachomatis-and-neisseria-gonorrhoeae-in-extra-genital-sites
#18
Katheryn R Salow, Adam C Cohen, Claire C Bristow, Mark R McGrath, Jeffrey D Klausner
OBJECTIVES: To evaluate the concordance between clinic-collected extra-genital specimens and self-collected mailed-in extra-genital specimens among participants seeking sexually transmitted infection testing at a free clinic in Hollywood, CA. METHODS: A convenience sample of 210 men who have sex with men were enrolled between February 29, 2016 and December 21, 2016 and received mail-in testing kits for Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG). All testing was performed using the GeneXpert® CT/NG (Cepheid, Sunnyvale, CA)...
2017: PloS One
https://www.readbyqxmd.com/read/29240636/the-etiology-of-genital-ulcer-disease-and-coinfections-with-chlamydia-trachomatis-and-neisseria-gonorrhoeae-in-zimbabwe-results-from-the-zimbabwe-sti-etiology-study
#19
More Mungati, Anna Machiha, Owen Mugurungi, Mufuta Tshimanga, Peter H Kilmarx, Justice Nyakura, Gerald Shambira, Vitalis Kupara, David A Lewis, Elizabeth Gonese, Beth A Tippett Barr, H Hunter Handsfield, Cornelis A Rietmeijer
BACKGROUND: In many countries, sexually transmitted infections (STIs) are treated syndromically. Thus, patients diagnosed as having genital ulcer disease (GUD) in Zimbabwe receive a combination of antimicrobials to treat syphilis, chancroid, lymphogranuloma venereum (LGV), and genital herpes. Periodic studies are necessary to assess the current etiology of GUD and assure the appropriateness of current treatment guidelines. MATERIALS AND METHODS: We selected 6 geographically diverse clinics in Zimbabwe serving high numbers of STI cases to enroll men and women with STI syndromes, including GUD...
January 2018: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/29240635/the-etiology-of-male-urethral-discharge-in-zimbabwe-results-from-the-zimbabwe-sti-etiology-study
#20
Cornelis A Rietmeijer, More Mungati, Anna Machiha, Owen Mugurungi, Vitalis Kupara, Luanne Rodgers, Peter H Kilmarx, Amy Herman Roloff, Elizabeth Gonese, Beth A Tippett-Barr, Gerald Shambira, David A Lewis, H Hunter Handsfield, Mufuta Tshimanga
INTRODUCTION: Sexually transmitted infections (STIs) are managed syndromically in most developing countries. In Zimbabwe, men presenting with urethral discharge are treated with a single intramuscular dose of kanamycin or ceftriaxone in combination with a week's course of oral doxycycline. This study was designed to assess the current etiology of urethral discharge and other STIs to inform current syndromic management regimens. METHODS: We conducted a study among 200 men with urethral discharge presenting at 6 regionally diverse STI clinics in Zimbabwe...
January 2018: Sexually Transmitted Diseases
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