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Neisseria gonorrhea

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https://www.readbyqxmd.com/read/28919833/conventional-culture-versus-nucleic-acid-amplification-tests-for-screening-of-urethral-neisseria-gonorrhea-infection-among-asymptomatic-men-who-have-sex-with-men
#1
Jiratha Budkaew, Bandit Chumworathayi, Chamsai Pientong, Tipaya Ekalaksananan
BACKGROUND: Many methods are used to detect urethral Neisseria gonorrhea (NG) infection among asymptomatic men who have sex with men (MSM). The objective of this study was to define the performance of conventional culture compared to real-time polymerase chain reaction (PCR) for diagnosis of asymptomatic urethral gonorrhea among MSM. METHODS: In this cross-sectional study, 147 clinical specimens for NG testing from asymptomatic participants were evaluated. MSM >18 years old who consented to undergo urethral swab and collection of urine samples from two clinics (one was the sexually transmitted diseases (STDs) mobile clinic and the second was the antiretroviral clinic) located in Khon Kaen, Thailand, were recruited...
2017: Pragmatic and Observational Research
https://www.readbyqxmd.com/read/28904187/genomic-characterization-of-urethritis-associated-neisseria-meningitidis-shows-that-a-wide-range-of-n-meningitidis-strains-can-cause-urethritis
#2
Kevin C Ma, Magnus Unemo, Samo Jeverica, Robert D Kirkcaldy, Hideyuki Takahashi, Makoto Ohnishi, Yonatan H Grad
Neisseria meningitidis, typically a resident of the oro- or nasopharynx and the causative agent of meningococcal meningitis and meningococcemia, is capable of invading and colonizing the urogenital tract. This can result in urethritis, akin to the syndrome caused by its sister species N. gonorrhoeae, the etiologic agent of gonorrhea. Recently, meningococcal strains associated with outbreaks of urethritis were reported to share genetic characteristics with gonococcus, raising the question of the extent to which these strains contain features that promote adaptation to the genitourinary niche, making them gonococcal-like and distinguishing them from other N...
September 13, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28886683/neisseria-gonorrhoeae-drug-resistance-mouse-models-and-vaccine-development
#3
Peter A Rice, William M Shafer, Sanjay Ram, Ann E Jerse
Gonorrhea, an obligate human infection, is on the rise worldwide and gonococcal strains resistant to many antibiotics are emerging. Appropriate antimicrobial treatment and prevention, including effective vaccines, are urgently needed. To guide investigation, an experimental model of genital tract infection has been developed in female mice to study mechanisms by which Neisseria gonorrhoeae evades host-derived antimicrobial factors and to identify protective and immunosuppressive pathways. Refinements of the animal model have also improved its use as a surrogate host of human infection and accelerated the testing of novel therapeutic and prophylactic compounds against gonococcal infection...
September 8, 2017: Annual Review of Microbiology
https://www.readbyqxmd.com/read/28876291/prevalence-of-gonorrhea-and-chlamydia-testing-by-anatomical-site-among-men-who-have-sex-with-men-in-hiv-medical-care-united-states-2013-2014
#4
Monita R Patel, John T Brooks, Yunfeng Tie, Shikha Garg, Heather Bradley
Fewer than one-third of men who have sex with men were tested for Neisseria gonorrhoeae or Chlamydia trachomatis as part of HIV medical care in the United States in 2013 to 2014, and only 11.6% were tested for either sexually transmitted disease at an extragenital site.
August 22, 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28844395/-a-case-of-gonococcal-arthritis-diagnostic-difficulties-and-usefulness-of-synovial-fluid-pcr
#5
N Rouanes, R Sanchez, C Cazanave
INTRODUCTION: The incidence of Neisseria gonorrhoeae septic arthritis remains low in the general population. Its clinical and microbiological diagnostic remains difficult. CASE REPORT: We report a 44-year-old man who presented with a monoarthritis of the right ankle. The diagnosis of gonoccocal septic arthritis was obtained by PCR from the joint fluid. Treatment with ceftriaxone was effective. CONCLUSION: In patients with high risk of N. gonorrhoeae infection, PCR for detection of gonorrhea in synovial fluid could potentially facilitate the diagnostic of gonococcal septic arthritis...
August 24, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28837003/a-national-strategic-plan-for-reducing-the-burden-of-sexually-transmitted-infections-in-israel-by-the-year-2025
#6
Daniel Chemtob, Dan Gandacu, Zohar Mor, Itamar Grotto, Emilia Anis, Elliot Rosenberg
BACKGROUND: There is on ongoing debate in the literature regarding the real burden of STIs (sexually transmitted infections) in Western countries and the proper strategies needed to estimate and to prevent them. Our purpose is to present an evidence-based national strategic plan for STI prevention in Israel through assessing the current burden of illness, leading international preventive strategies, and practical policymaking experience. METHODS: Epidemiologic and health policy data on STIs were analyzed from various sources: a) systematic national surveillance data for the years 2002-2014; b) the international scientific literature (published between 2002-16; keywords: Sexually Transmitted Diseases (STD) (or STI) AND prevention AND intervention AND gonorrhea OR chlamydia OR syphilis; c) internal Ministry of Health (MOH) analyses and reports, and d) expert opinion...
April 19, 2017: Israel Journal of Health Policy Research
https://www.readbyqxmd.com/read/28828298/screening-for-asymptomatic-chlamydia-and-gonorrhea-in-adolescent-males-in-an-urban-pediatric-emergency-department
#7
Megan E Maraynes, Jennifer H Chao, Konstantinos Agoritsas, Richard Sinert, Shahriar Zehtabchi
AIM: To determine the prevalence of Chlamydia trachomatis (CT) and Neisseria gonorrhea (GC) in young men seeking care in the emergency department (ED) for non-sexually transmitted infection (STI) related symptoms. METHODS: This was a prospective, cross-sectional study in an urban ED. The main outcome was the rate of positive CT and GC on urine nucleic acid amplification testing in males aged 16-21 presenting with non-STI related complaints. RESULTS: Two hundred and eighty-four patients were enrolled, 271 were included in the final data analysis [age range 16-21, median: 18 (quartiles 16-18, 19-21)]...
August 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28820128/molecular-antimicrobial-resistance-surveillance-for-neisseria-gonorrhoeae-northern-territory-australia
#8
David M Whiley, Ella Trembizki, Cameron Buckley, Kevin Freeman, Robert W Baird, Miles Beaman, Marcus Chen, Basil Donovan, Ratan L Kundu, Christopher K Fairley, Rebecca Guy, Tiffany Hogan, John M Kaldor, Mahdad Karimi, Athena Limnios, David G Regan, Nathan Ryder, Jiunn-Yih Su, James Ward, Monica M Lahra
Neisseria gonorrhoeae antimicrobial resistance (AMR) is a globally recognized health threat; new strategies are needed to enhance AMR surveillance. The Northern Territory of Australia is unique in that 2 different first-line therapies, based primarily on geographic location, are used for gonorrhea treatment. We tested 1,629 N. gonorrhoeae nucleic acid amplification test-positive clinical samples, collected from regions where ceftriaxone plus azithromycin or amoxicillin plus azithromycin are recommended first-line treatments, by using 8 N...
September 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28781959/structure-based-design-of-ferritin-nanoparticle-immunogens-displaying-antigenic-loops-of-neisseria-gonorrhoeae
#9
Liqin Wang, Daniel Xing, Adriana Le Van, Ann E Jerse, Shuishu Wang
Effective vaccines are urgently needed to combat gonorrhea, a common sexually transmitted bacterial infection, for which treatment options are diminishing due to rapid emergence of antibiotic resistance. We have used a rational approach to the development of gonorrhea vaccines, and genetically engineered nanoparticles to present antigenic peptides of Neisseria gonorrhoeae, the causative agent of gonorrhea. We hypothesized that the ferritin nanocage could be used as a platform to display an ordered array of N...
August 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28754299/antimicrobial-resistance-in-neisseria-gonorrhoeae-history-molecular-mechanisms-and-epidemiological-aspects-of-an-emerging-global-threat
#10
REVIEW
Ana Paula Ramalho da Costa-Lourenço, Késia Thaís Barros Dos Santos, Beatriz Meurer Moreira, Sergio Eduardo Longo Fracalanzza, Raquel Regina Bonelli
Neisseria gonorrhoeae is the agent of gonorrhea, a sexually transmitted infection with an estimate from The World Health Organization of 78 million new cases in people aged 15-49 worldwide during 2012. If left untreated, complications may include pelvic inflammatory disease and infertility. Antimicrobial treatment is usually effective; however, resistance has emerged successively through various molecular mechanisms for all the regularly used therapeutic agents throughout decades. Detection of antimicrobial susceptibility is currently the most critical aspect for N...
July 12, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28721112/current-perspectives-in-the-usa-on-the-diagnosis-and-treatment-of-pelvic-inflammatory-disease-in-adolescents
#11
REVIEW
William L Risser, Jan M Risser, Amanda L Risser
In this review, the epidemiology, diagnosis, and treatment of pelvic inflammatory disease (PID) are discussed from a USA perspective and the difficulties that USA adolescents face in recognizing and seeking care for PID and other sexually transmitted infections (STIs) are emphasized. Females aged 15-24 years have the highest incidence of cervical infection with Chlamydia trachomatis and Neisseria gonorrheae, the principal causes of PID. PID is common in this age group. However, the incidence of PID in the USA is not known, because it is not a reportable disease, and because clinicians vary in the criteria used for the diagnosis...
2017: Adolescent Health, Medicine and Therapeutics
https://www.readbyqxmd.com/read/28654654/identification-and-characterization-of-acka-dependent-protein-acetylation-in-neisseria-gonorrhoeae
#12
Deborah M B Post, Birgit Schilling, Lorri M Reinders, Alexandria K D'Souza, Margaret R Ketterer, Steven J Kiel, Aroon T Chande, Michael A Apicella, Bradford W Gibson
Neisseria gonorrhoeae, the causative agent of gonorrhea, has a number of factors known to contribute to pathogenesis; however, a full understanding of these processes and their regulation has proven to be elusive. Post-translational modifications (PTMs) of bacterial proteins are now recognized as one mechanism of protein regulation. In the present study, Western blot analyses, with an anti-acetyl-lysine antibody, indicated that a large number of gonococcal proteins are post-translationally modified. Previous work has shown that Nε-lysine acetylation can occur non-enzymatically with acetyl-phosphate (AcP) as the acetyl donor...
2017: PloS One
https://www.readbyqxmd.com/read/28630127/deciphering-function-of-new-gonococcal-vaccine-antigens-using-phenotypic-microarrays
#13
Benjamin I Baarda, Sarah Emerson, Philip J Proteau, Aleksandra E Sikora
The function and extracellular location of cell envelope proteins make them attractive candidates for developing vaccines against bacterial diseases, including challenging, drug-resistant pathogens such as Neisseria gonorrhoeae Proteomics-driven reverse vaccinology delivered multiple gonorrhea vaccine candidates; however, the biological functions of many of them remain to be elucidated. Herein, the functions of six gonorrhea vaccine candidates - NGO2121, NGO1985, NGO2054, NGO2111, NGO1205, and NGO1344 - in cell envelope homeostasis were probed using phenotype microarrays with 1,056 conditions and a ΔbamE mutant (Δngo1780) as a reference of perturbed outer membrane integrity...
June 19, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28608788/increases-in-the-rate-of-neisseria-gonorrhoeae-among-gay-bisexual-and-other-men-who-have-sex-with-men-findings-from-the-sexually-transmitted-disease-surveillance-network-2010-2015
#14
Mark R Stenger, Preeti Pathela, Greta Anschuetz, Heidi Bauer, Julieann Simon, Robert Kohn, Christina Schumacher, Elizabeth Torrone
BACKGROUND: Inequalities in Neisseria gonorrhoeae (gonorrhea) burden by sexual minority status in the United States are difficult to quantify. Sex of sex partner is not routinely collected for reported cases. Population estimates of men who have sex with men (MSM) necessary to calculate case rates have not been available until recently. For these reasons, trends in reported gonorrhea rates among MSM have not been described across multiple jurisdictions. METHODS: We estimated of the number of MSM cases reported in 6 jurisdictions continuously participating in the STD Surveillance Network 2010-2015 based on interviews with a random sample of cases...
July 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28607013/pena-pona-porb1-and-mtrr-mutations-and-molecular-epidemiological-typing-of-neisseria-gonorrhoeae-with-decreased-susceptibility-to-cephalosporins
#15
LETTER
Kayo Osawa, Katsumi Shigemura, Yukie Nukata, Koichi Kitagawa, Fukashi Yamamichi, Hiroyuki Yoshida, Toshiro Shirakawa, Soichi Arakawa, Masato Fujisawa
No abstract text is available yet for this article.
August 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28601086/burden-and-characteristics-of-hiv-infection-among-female-sex-workers-in-kampala-uganda-a-respondent-driven-sampling-survey
#16
Wolfgang Hladik, Andrew L Baughman, David Serwadda, Jordan W Tappero, Rachel Kwezi, Namakula D Nakato, Joseph Barker
BACKGROUND: Sex workers in Uganda are at significant risk for HIV infection. We characterized the HIV epidemic among Kampala female sex workers (FSW). METHODS: We used respondent-driven sampling to sample FSW aged 15+ years who reported having sold sex to men in the preceding 30 days; collected data through audio-computer assisted self-interviews, and tested blood, vaginal and rectal swabs for HIV, syphilis, neisseria gonorrhea, chlamydia trachomatis, and trichomonas vaginalis...
June 10, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28584144/peptide-inhibitors-targeting-the-neisseria-gonorrhoeae-pivotal-anaerobic-respiration-factor-ania
#17
Aleksandra E Sikora, Robert H Mills, Jacob V Weber, Adel Hamza, Bryan W Passow, Andrew Romaine, Zachary A Williamson, Robert W Reed, Ryszard A Zielke, Konstantin V Korotkov
Neisseria gonorrhoeae causes the sexually transmitted infection gonorrhea, which is highly prevalent worldwide and has a major impact on reproductive and neonatal health. The superbug status of N. gonorrhoeae necessitates the development of drugs with different mechanisms of action. Here, we focused on targeting the nitrite reductase AniA, which is a pivotal component of N. gonorrhoeae anaerobic respiration and biofilm formation. Our studies showed that gonococci expressing AniA containing the altered catalytic residues D137A and H280A failed to grow under anaerobic conditions, demonstrating that the nitrite reductase function is essential...
August 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28581359/in-vitro-activity-of-sitafloxacin-and-additional-newer-generation-fluoroquinolones-against-ciprofloxacin-resistant-neisseria-gonorrhoeae-isolates
#18
Ryoichi Hamasuna, Makoto Ohnishi, Masahiro Matsumoto, Ryo Okumura, Magnus Unemo, Tetsuro Matsumoto
Emergence of antimicrobial resistance in Neisseria gonorrhoeae is a major public health concern globally, and new antimicrobials for treatment of gonorrhea are imperative. In this study, the in vitro activity of sitafloxacin, a fluoroquinolone mainly used for respiratory tract or urogenital infections in Japan, and additional newer generation fluoroquinolones were determined against ciprofloxacin-resistant N. gonorrhoeae isolates. Minimum inhibitory concentrations (MICs) of ciprofloxacin, levofloxacin, moxifloxacin, sitafloxacin, pazufloxacin, and tosufloxacin against 47 N...
June 5, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28549097/cluster-of-neisseria-gonorrhoeae-isolates-with-high-level-azithromycin-resistance-and-decreased-ceftriaxone-susceptibility-hawaii-2016
#19
Alan R Katz, Alan Y Komeya, Robert D Kirkcaldy, A Christian Whelen, Olusegun O Soge, John R Papp, Ellen N Kersh, Glenn M Wasserman, Norman P O'Connor, Pamela S O'Brien, Douglas T Sato, Eloisa V Maningas, Gail Y Kunimoto, Juval E Tomas
Background: The Centers for Disease Control and Prevention (CDC) currently recommends dual therapy with ceftriaxone and azithromycin for gonorrhea to ensure effective treatment and slow emergence of antimicrobial resistance. Since 2013, the prevalence of reduced azithromycin susceptibility increased in the United States; however, these strains were highly susceptible to cephalosporins. We identified a cluster of Neisseria gonorrhoeae isolates with high-level azithromycin resistance, several of which also demonstrated decreased ceftriaxone susceptibility...
September 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28545411/antimicrobial-susceptibility-of-neisseria-gonorrhoeae-isolates-from-hefei-2014-2015-genetic-characteristics-of-antimicrobial-resistance
#20
Fa-Xing Jiang, Qian Lan, Wen-Jing Le, Xiao-Hong Su
BACKGROUND: Antimicrobial resistance (AMR) and genetic determinants of resistance of N. gonorrhoeae isolates from Hefei, China, were characterized adding a breadth of information to the molecular epidemiology of gonococcal resistance in China. METHODS: 126 N. gonorrhoeae isolates from a hospital clinic in Hefei, were collected between January, 2014, and November, 2015. The minimum inhibitory concentration (MIC) of N. gonorrhoeae isolates for seven antimicrobials were determined by the agar dilution method...
May 25, 2017: BMC Infectious Diseases
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