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Neisseria gonorrhea

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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
#1
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/29240636/the-etiology-of-genital-ulcer-disease-and-coinfections-with-chlamydia-trachomatis-and-neisseria-gonorrhoeae-in-zimbabwe-results-from-the-zimbabwe-sti-etiology-study
#2
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/29229778/structural-and-functional-insights-into-the-role-of-bamd-and-bame-within-the-%C3%AE-barrel-assembly-machinery-in-neisseria-gonorrhoeae
#3
Aleksandra E Sikora, Igor H Wierzbicki, Ryszard A Zielke, Rachael F Ryner, Konstantin V Korotkov, Susan K Buchanan, Nicholas Noinaj
The β-barrel assembly machinery (BAM) is a conserved multi-component protein complex responsible for the biogenesis of β-barrel outer membrane proteins (OMPs) in Gram-negative bacteria. Given its role in the production of OMPs for survival and pathogenesis, BAM represents an attractive target for the development of therapeutic interventions including drugs and vaccines against multi-drug resistant bacteria such as Neisseria gonorrhoeae The first structure of BamA, the central component of BAM, was from N...
December 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29177239/genital-infections-and-reproductive-complications-associated-with-trichomonas-vaginalis-neisseria-gonorrhoeae-and-streptococcus-agalactiae-in-women-of-qom-central-iran
#4
Mahmoud Nateghi Rostami, Batool Hossein Rashidi, Azam Habibi, Razieh Nazari, Masoumeh Dolati
Background: Trichomonas vaginalis (T.vaginalis) and Neisseria gonorrhoeae (N.gonorrhoeae) are two most common non-viral sexually transmitted infections in the world. No data are available regarding the epidemiology of genital infections in women of Qom, central Iran. Objective: Epidemiological investigation of sexually transmitted infections in genital specimens of women referred to the referral gynecology hospital in Qom, central Iran. Materials and Methods: Genital swab specimens were collected from women volunteers and used for identification of bacterial and protozoal infections by conventional microbial diagnostics, porA pseudo gene LightCycler® real-time PCR (for N...
June 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29174733/comparison-of-the-cepheid-genexpert-ct-ng-assay-to-the-hologic-aptima-combo2-assay-for-the-detection-of-chlamydia-trachomatis-and-neisseria-gonorrhoeae-in-self-collected-rectal-swabs
#5
Laura Dize, Barbara Silver, Charlotte Gaydos
Self-collected rectal-swabs were tested for CT and NG on GeneXpert CT/NG as compared to APTIMA Combo2. Of 448 rectal-swabs, 22 were positive for CT; 7 for NG on both assays; two were discordant. Sensitivity and specificity of GeneXpert was 95.5% and 99.7% for chlamydia, respectively; for gonorrhea both were 100%.
October 26, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29155673/strengthening-global-surveillance-for-antimicrobial-drug-resistant-neisseria-gonorrhoeae-through-the-enhanced-gonococcal-antimicrobial-surveillance-program
#6
Emily J Weston, Teodora Wi, John Papp
Monitoring trends in antimicrobial drug-resistant Neisseria gonorrhoeae is a critical public health and global health security activity because the number of antimicrobial drugs available to treat gonorrhea effectively is rapidly diminishing. Current global surveillance methods for antimicrobial drug-resistant N. gonorrhoeae have many limitations, especially in countries with the greatest burden of disease. The Enhanced Gonococcal Antimicrobial Surveillance Program is a collaboration between the World Health Organization and the Centers for Disease Control and Prevention...
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29136127/risk-of-pelvic-inflammatory-disease-in-relation-to-chlamydia-and-gonorrhea-testing-repeat-testing-and-positivity-a-population-based-cohort-study
#7
Joanne Reekie, Basil Donovan, Rebecca Guy, Jane S Hocking, John M Kaldor, Donna B Mak, Sallie Pearson, David Preen, Louise Stewart, James Ward, Bette Liu
Background: There is uncertainty around whether the risks of pelvic inflammatory disease (PID) differ following Chlamydia trachomatis (chlamydia) and Neisseria gonorrhoeae (gonorrhea) infection. We quantified the risk of PID associated with chlamydia and gonorrhea infection and subsequent repeat infections in a whole-population cohort. Methods: A cohort of 315123 Western Australian women, born during 1974-1995, was probabilistically linked to chlamydia and gonorrhea testing records and to hospitalizations and emergency department presentations for PID from 2002 to 2013...
November 9, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29100864/sustained-simultaneous-delivery-of-metronidazole-and-doxycycline-from-polycaprolactone-matrices-designed-for-intravaginal-treatment-of-pelvic-inflammatory-disease
#8
Meenakshi Pathak, Allan G A Coombes, BoMi Ryu, Peter J Cabot, Mark S Turner, Cheryn Palmer, Dongjie Wang, Kathryn J Steadman
Poly(ɛ-caprolactone) (PCL) intra-vaginal matrices were produced for local delivery of a combination of antibacterials, by rapidly cooling a mixture of drug powders dispersed in PCL solution. Matrices loaded with different combinations of metronidazole (10, 15 and 20% w/w) and doxycycline (10% w/w), were evaluated in vitro for release behavior and antibacterial activity. Rapid 'burst release' of 8-15% of the doxycycline content and 31-37% of the metronidazole content occurred within 24 h when matrices were immersed in simulated vaginal fluid (SVF) at 37°C...
October 31, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29074030/reliable-rapid-assay-for-gonorrhea-and-chlamydia-in%C3%A2-the%C3%A2-emergency-department
#9
Sean P Wilson, Taher Vohra, Jared Goldberg, Christopher Price, Sean Calo, Meredith Mahan, Joseph Miller
BACKGROUND: Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) are common sexually transmitted infections seen in the emergency department (ED). Due to an inability to reliably make accurate diagnosis by physical examination, concern for unreliable follow-up, and current delays in diagnostic nucleic acid amplification testing (NAAT), presumptive treatment active against CT and NG, as described by Centers for Disease Control clinical practice guidelines, is often performed. OBJECTIVES: The purpose of this study was to determine whether a rapid, urine NAAT performed in the ED is noninferior in its diagnostic sensitivity compared with a traditional, swab NAAT assay...
October 23, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29045604/increases-in-neisseria-gonorrhoeae-with-reduced-susceptibility-to-azithromycin-among-men-who-have-sex-with-men-msm-in-seattle-king-county-washington-2012-2016
#10
Lindley A Barbee, Olusegun O Soge, David A Katz, Julia C Dombrowski, King K Holmes, Matthew R Golden
Background: Antimicrobial-resistant Neisseria gonorrhea is a major public health threat. The CDC recommends that clinicians treat gonorrhea with ceftriaxone 250mg plus azithromycin 1g. Resistance to azithromycin could affect gonorrhea control efforts. Methods: We evaluated antimicrobial susceptibility profiles and clinical data of gonococcal isolates collected at the Public Health-Seattle & King County (PHSKC) STD Clinic from 2012-2016, focusing on 2014-2016. We compared cases with CDC azithromycin (AZM) alert value MIC (MIC ≥2 µg/mL) to those with AZM MIC ≤1 µg/mL, and evaluated clinical outcomes...
October 16, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29042497/a-single-dual-function-enzyme-controls-the-production-of-inflammatory-nod-agonist-peptidoglycan-fragments-by-neisseria-gonorrhoeae
#11
Jonathan D Lenz, Kathleen T Hackett, Joseph P Dillard
Neisseria gonorrhoeae gonococcus (GC) is a Gram-negative betaproteobacterium and causative agent of the sexually transmitted infection gonorrhea. During growth, GC releases lipooligosaccharide (LOS) and peptidoglycan (PG) fragments, which contribute significantly to the inflammatory damage observed during human infection. In ascending infection of human Fallopian tubes, inflammation leads to increased risk of ectopic pregnancy, pelvic inflammatory disease, and sterility. Of the PG fragments released by GC, most are disaccharide peptide monomers, and of those, 80% have tripeptide stems despite the observation that tetrapeptide stems make up 80% of the assembled cell wall...
October 17, 2017: MBio
https://www.readbyqxmd.com/read/29028971/infrequent-testing-of-women-for-rectal-chlamydia-and-gonorrhea-in-the-united-states
#12
Guoyu Tao, Karen W Hoover, Melinda B Nye, Philip J Peters, Thomas L Gift, Barbara A Body
Background: Anal sex is a common sexual behavior among women that increases their risk of acquiring rectal infection with Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC). Methods: We estimated the frequency and positivity of rectal CT and GC tests for women aged 15-60 years performed by a large U.S. commercial laboratory between November 2012 and September 2015. We also estimated the frequency and positivity of pharyngeal and genital specimens also performed on the same date...
October 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29017374/prevalence-of-sexually-transmitted-infections-and-their-risk-factors-among-female-sex-workers-in-isfahan-iran-a-cross-sectional-study
#13
Maryam Nasirian, Sina Kianersi, Shervin Ghaffari Hoseini, Nazila Kassaian, Majid Yaran, Parisa Shoaei, Behrooz Ataei, Reza Fadaei, Marjan Meshkati, Alireza Emami Naeini, Mojtaba Rostami Jalilian
OBJECTIVES: Female sex workers (FSWs) are at high risk of sexually transmitted infections (STIs) and form a core group to facilitate STI spreading. We aimed to estimate the prevalence of STIs among FSWs who attended Female Harm Reduction Center of Isfahan, Iran, and to determine the association between risky behaviors and STIs. STUDY DESIGN: In a cross-sectional study, 99 FSWs were recruited and interviewed about demographic characteristics and risky behaviors. A trained midwife examined FSWs for genital ulcer, abnormal vaginal discharge, and cervicitis...
January 1, 2017: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/29016383/pathogenesis-of-neisseria-gonorrhoeae-in-the-female-reproductive-tract-neutrophilic-host-response-sustained-infection-and-clinical-sequelae
#14
Jacqueline S Stevens, Alison K Criss
PURPOSE OF REVIEW: Gonorrhea is a major global health concern, caused by the bacterium Neisseria gonorrhoeae. The main clinical feature of acute gonorrhea is neutrophilic influx that is unable to clear infection. Women of reproductive age are predominantly at risk for serious sequelae of gonorrhea, including pelvic inflammatory disease, ectopic pregnancy, and infertility. This review will highlight how neutrophils are recruited to the female reproductive tract (FRT) in response to N. gonorrhoeae, how N...
October 7, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28946854/cervical-precancerous-changes-and-selected-cervical-microbial-infections-kiambu-county-kenya-2014-a-cross-sectional-study
#15
Evalyne Wambui Kanyina, Lucy Kamau, Margaret Muturi
BACKGROUND: Cervical cancer is the predominant cancer among women in Kenya and second most common in women in developing regions. Population-based cytological screening and early treatment reduces morbidity and mortality associated with the cancer. We determined the occurrence of cervical precancerous changes and cervical microbial infections (Trichomonas vaginalis, Candida albicans, Neisseria gonorrhea and Actinomyces) among women attending Family Health Option Kenya (FHOK) clinic in Thika...
September 25, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28943174/increase-in-sexually-transmitted-infections-in-a-cohort-of-outpatient-hiv-positive-men-who-have-sex-with-men-in-the-parisian-region
#16
E Farfour, S Dimi, C Majerholc, E Fourn, T Séné, M B Chaida, M Vasse, D Zucman
OBJECTIVE: To describe the increased incidence of sexually transmitted infections (STIs) in a cohort of HIV-infected men who have sex with men (MSM), followed in a tertiary hospital of the Île-de-France region. MATERIALS AND METHODS: We performed a monocentric, retrospective, and prospective study. We included symptomatic HIV-infected MSM patients who consulted for their annual consultation. RESULTS: One hundred and eighty patients were seen between 2008-2011 and 215 between 2012-2015...
November 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28932707/neisseria-gonorrhoeae-challenge-increases-matrix-metalloproteinase-8-expression-in-fallopian-tube-explants
#17
Natalia E Juica, Paula I Rodas, Paula Solar, Paula Borda, Renato Vargas, Cristobal Muñoz, Rodolfo Paredes, Myron Christodoulides, Luis A Velasquez
Background:Neisseria gonorrhoeae (Ngo) is the etiological agent of gonorrhea, a sexually transmitted infection that initially infects the female lower genital tract. In untreated women, the bacteria can ascend to the upper genital reproductive tract and infect the fallopian tube (FTs), which is associated with salpingitis and can lead to impaired FT function and infertility. The extracellular matrix (ECM) plays an important role in cell migration and differentiation in the female genital tract, and some pathogens modify the ECM to establish successful infections...
2017: Frontiers in Cellular and Infection Microbiology
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
#18
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
#19
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
#20
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
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