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Ureaplasma

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https://www.readbyqxmd.com/read/28099135/mycoplasma-ureaplasma-infection-in-pregnancy-to-screen-or-not-to-screen
#1
Gilbert G G Donders, Kateryna Ruban, Gert Bellen, Ljubomir Petricevic
Mycoplasmata have been linked to pregnancy complications and neonatal risk. While formerly a limited number of species could be discovered by cultures, molecular biology nowadays discovers both lower quantities and more diverse species, making us realize that mycoplasmata are ubiquitous in the vaginal milieu and do not always pose a danger for pregnant women. As the meaning of mycoplasmata in pregnancy is not clear to many clinicians, we summarized the current knowledge about the meaning of different kinds of mycoplasmata in pregnancy and discuss the potential benefits and disadvantages of treatment...
January 18, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28094842/impact-of-microbial-invasion-of-amniotic-cavity-and-the-type-of-microorganisms-on-short-term-neonatal-outcome-in-women-with-preterm-labor-and-intact-membranes
#2
Teresa Cobo, Irene Vives, Adriano Rodríguez-Trujillo, Clara Murillo, Martina A Ángeles, Jordi Bosch, Andrea Vergara, Eduard Gratacós, Montse Palacio
INTRODUCTION: The objective was to evaluate the impact of microbial invasion of the amniotic cavity (MIAC) and the type of microorganisms on pregnancy and short-term neonatal outcomes in women with preterm labor (PTL). MATERIAL AND METHODS: Prospective observational cohort study including women with PTL from 22.0-36.0 weeks. MIAC was defined based on amniotic fluid aerobic/anaerobic/mycoplasmas cultures and intra-amniotic inflammation (IAI) based on amniotic fluid Interleukin-6 levels...
January 17, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28088841/intracellular-fate-of-ureaplasma-parvum-entrapped-by-host-cellular-autophagy
#3
Fumiko Nishiumi, Michinaga Ogawa, Yukiko Nakura, Yusuke Hamada, Masahiro Nakayama, Jiro Mitobe, Atsushi Hiraide, Norio Sakai, Makoto Takeuchi, Tamotsu Yoshimori, Itaru Yanagihara
Genital mycoplasmas, including Ureaplasma spp., are among the smallest human pathogenic bacteria and are associated with preterm birth. Electron microscopic observation of U. parvum showed that these prokaryotes have a regular, spherical shape with a mean diameter of 146 nm. U. parvum was internalized into HeLa cells by clathrin-mediated endocytosis and survived for at least 14 days around the perinuclear region. Intracellular U. parvum reached endosomes in HeLa cells labeled with EEA1, Rab7, and LAMP-1 within 1 to 3 hr...
January 15, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28070089/development-of-a-one-run-real-time-pcr-detection-system-for-pathogens-associated-with-bovine-respiratory-disease-complex
#4
Mai Kishimoto, Shinobu Tsuchiaka, Sayed Samim Rahpaya, Ayako Hasebe, Keiko Otsu, Satoshi Sugimura, Suguru Kobayashi, Natsumi Komatsu, Makoto Nagai, Tsutomu Omatsu, Yuki Naoi, Kaori Sano, Sachiko Okazaki-Terashima, Mami Oba, Yukie Katayama, Reiichiro Sato, Tetsuo Asai, Tetsuya Mizutani
Bovine respiratory disease complex (BRDC) is frequently found in cattle worldwide. The etiology of BRDC is complicated by infections with multiple pathogens, making identification of the causal pathogen difficult. Here, we developed a detection system by applying TaqMan real-time PCR (Dembo respiratory-PCR) to screen a broad range of microbes associated with BRDC in a single run. We selected 16 bovine respiratory pathogens (bovine viral diarrhea virus, bovine coronavirus, bovine parainfluenza virus 3, bovine respiratory syncytial virus, influenza D virus, bovine rhinitis A virus, bovine rhinitis B virus, bovine herpesvirus 1, bovine adenovirus 3, bovine adenovirus 7, Mannheimia haemolytica, Pasteurella multocida, Histophilus somni, Trueperella pyogenes, Mycoplasma bovis and Ureaplasma diversum) as detection targets and designed novel specific primer-probe sets for nine of them...
January 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28027001/a-case-of-rectal-ureaplasma-infection-and-implications-for-testing-in-young-men-who-have-sex-with-men-the-p18-cohort-study
#5
Collette E Abbott, Richard E Greene, Farzana Kapadia, Perry N Halkitis
Ureaplasma is a significant cause of nongonococcal urethritis. This is a case of rectal Ureaplasma found on culture in a young man who has sex with men not previously reported in the literature. Nucleic acid amplification tests are now standard of care for sexually transmitted infection testing, but they do not test for Ureaplasma and, therefore, may be missing important infections. Ureaplasma could have important implications in urethritis and rectal HIV transmission among men who have sex with men engaging in condomless anal intercourse...
December 27, 2016: LGBT Health
https://www.readbyqxmd.com/read/28012250/the-effect-of-ureaplasma-urealyticum-on-the-level-of-p34h-expression-the-activity-of-hyaluronidase-and-dna-fragmentation-in-human-spermatozoa
#6
Xiao-Ping Ma, Xiao-Qin Gao
BACKGROUND: To study the effect of Ureaplasma urealyticum on the level of P34H expression, the activity of hyaluronidase, and the DNA fragmentation in human spermatozoa. METHOD: Western blot was used to detect the level of P34H expression on spermatozoa.The localization of this protein on human spermatozoa was determined by indirect immunofluorescent and observed by laser scanning confocal microscope. The activity of hyaluronidase was examined by improved fixed-substrate film method...
January 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/27992658/antimicrobial-activity-of-manuka-honey-against-antibiotic-resistant-strains-of-the-cell-wall-free-bacteria-ureaplasma-parvum-and-ureaplasma-urealyticum
#7
K L Hillitt, R E Jenkins, O B Spiller, M L Beeton
The susceptibility of the cell-wall free bacterial pathogens Ureaplasma spp. to Manuka honey was examined. The minimum inhibitory concentration (MIC) of Manuka honey for four Ureaplasma urealyticum and four Ureaplasma parvum isolates was determined. Sensitivity to honey was also compared to clinical isolates with resistance to tetracycline, macrolide and fluoroquinolone antibiotics. Finally step-wise resistance training was utilised in an attempt to induce increased tolerance to honey. The MIC was dependent on the initial bacterial load with 7...
December 19, 2016: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/27981387/-non-viral-sexually-transmitted-infections-epidemiology-clinical-manifestations-diagnostics-and-therapy-part%C3%A2-2-chlamydia-and-mycoplasma
#8
REVIEW
P Nenoff, A Manos, I Ehrhard, C Krüger, U Paasch, P Helmbold, W Handrick
Chlamydia trachomatis is the most common pathogen of sexually transmitted bacterial infections worldwide. Every year in Germany approximately 300,000 new infections are to be expected. Chlamydia infections occur nearly exclusively in the postpubertal period. The peak age group is 15-25 years. The infection usually runs an asymptomatic course and the diagnosis is made by nucleic acid amplification techniques (NAAT) often after chlamydial screening or if complications occur. For treatment of chlamydial infections oral doxycycline 100 mg twice daily over 7 days is initially used or alternatively oral azithromycin 1...
December 15, 2016: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/27974410/the-human-ureaplasma-species-as-causative-agents-of-chorioamnionitis
#9
REVIEW
Emma L Sweeney, Samantha J Dando, Suhas G Kallapur, Christine L Knox
The human Ureaplasma species are the most frequently isolated microorganisms from the amniotic fluid and placentae of women who deliver preterm and are also associated with spontaneous abortions or miscarriages, neonatal respiratory diseases, and chorioamnionitis. Despite the fact that these microorganisms have been habitually found within placentae of pregnancies with chorioamnionitis, the role of Ureaplasma species as a causative agent has not been satisfactorily explained. There is also controversy surrounding their role in disease, particularly as not all women infected with Ureaplasma spp...
January 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/27915439/presence-of-ureaplasma-diversum-in-the-genital-tracts-of-female-dairy-cattle-in-mato-grosso-state-brazil
#10
Jaqueline B Azevedo, Gustavo S Silva, Priscylla S Rocha, Letícia C Pitchenin, Valéria Dutra, Luciano Nakazato, Anderson Castro Soares de Oliveira, Caroline A Pescador
Ureaplasma diversum infection in bovine females may result in various reproductive problems, including granular vulvovaginitis, abortion, weak calves, salpingitis, and spontaneous abortion. The presence of U. diversum in a dairy bovine population from midwestern Brazil has not been established. The aim of this study was to determine whether U. diversum was present in dairy cattle from midwestern Brazil using polymerase chain reaction (PCR). Vulvovaginal mucus was analyzed from 203 cows located in six municipalities in the north region of Mato Grosso State, Brazil...
December 3, 2016: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/27911430/-clinical-presentations-of-herpes-zoster-ophthalmicus-diagnosis-and-therapy
#11
G M Chernakova, E A Kleshcheva, T B Semenova
: Approximately a quarter of the world's population at some point in life is at risk of developing shingles (Herpes Zoster). In 10-20% of cases the first branch of the trigeminal nerve gets involved (Herpes Zoster Ophthalmicus, HZO). Ophthalmic complications of HZO are able to cause a significant reduction in visual function. AIM: To study and summarize clinical features of HZO (including the rate of complications and their nature) and to determine the relationship between clinical and laboratory data from these patients...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27884651/analysis-of-mutations-in-dna-gyrase-and-topoisomerase-iv-of-ureaplasma-urealyticum-and-ureaplasma-parvum-serovars-resistant-to-fluoroquinolones
#12
Giorgio Piccinelli, Franco Gargiulo, Valeria Biscaro, Francesca Caccuri, Arnaldo Caruso, Maria Antonia De Francesco
This study aims to determine the prevalence of fluoroquinolone resistance of Ureaplasma biovars and serovars isolated from urogenital clinical samples and determine the underlying molecular mechanism for quinolone resistance for all resistant isolates. Of 105 samples confirmed as positive for U. urealyticum/U. parvum, 85 were resistant to quinolones by the Mycoplasma-IST2 kit. However, only 43 out of 85 quinolone resistant isolates had amino acid substitutions in GyrA, GyrB, ParC and ParE proteins underlining that this assay have mis-identified as fluoroquinolone resistant 42 isolates...
January 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27870156/combinations-and-loads-of-bacteria-affect-the-cytokine-production-by-fetal-membranes-an-in-vitro-study
#13
Nathalia Mayumi Noda-Nicolau, Jossimara Polettini, Morgan R Peltier, Márcia Guimarães da Silva, Ramkumar Menon
PROBLEM: The polybacterial invasion and inflammation of the amniotic cavity is a common scenario in PTB, and then, we analyzed the cytokine production by human fetal membranes to better understand the host response to polybacterial infections. METHOD OF STUDY: Fetal membranes were treated by heat-inactivated genital mycoplasmas and Gardnerella vaginalis at 10(3) or 10(6) colony/color-forming units/mL alone or in combination. Cytokines/receptors were measured in the medium by immunoassays...
December 2016: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/27862576/foetal-ureaplasma-parvum-bacteraemia-as-a-function-of-gestation-dependent-complement-insufficiency-evidence-from-a-sheep-model-of-pregnancy
#14
Matthew W Kemp, Shatha Ahmed, Michael L Beeton, Matthew S Payne, Masatoshi Saito, Yuichiro Miura, Haruo Usuda, Suhas G Kallapur, Boris W Kramer, Sarah J Stock, Alan H Jobe, John P Newnham, Owen B Spiller
PROBLEM: Complement is a central defence against sepsis, and increasing complement insufficiency in neonates of greater prematurity may predispose to increased sepsis. Ureaplasma spp. are the most frequently cultured bacteria from preterm blood samples. METHOD OF STUDY: A sheep model of intrauterine Ureaplasma parvum infection was used to examine in vivo Ureaplasma bacteraemia at early and late gestational ages. Complement function and Ureaplasma killing assays were used to determine the correlation between complement potency and bactericidal activity of sera ex vivo...
January 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/27861554/high-diversity-and-variability-in-the-vaginal-microbiome-in-women-following-preterm-premature-rupture-of-membranes-pprom-a-prospective-cohort-study
#15
Teenus Paramel Jayaprakash, Emily C Wagner, Julie van Schalkwyk, Arianne Y K Albert, Janet E Hill, Deborah M Money
OBJECTIVE: To characterize the vaginal microbiota of women following preterm premature rupture of membranes (PPROM), and determine if microbiome composition predicts latency duration and perinatal outcomes. DESIGN: A prospective cohort study. SETTING: Canada. POPULATION: Women with PPROM between 24+0 and 33+6 weeks gestational age (GA). METHODS: Microbiome profiles, based on pyrosequencing of the cpn60 universal target, were generated from vaginal samples at time of presentation with PPROM, weekly thereafter, and at delivery...
2016: PloS One
https://www.readbyqxmd.com/read/27859690/prevalence-and-distribution-of-chlamydia-trachomatis-genovars-in-indian-infertile-patients-a-pilot-study
#16
Jyoti Rawre, Benu Dhawan, Neena Malhotra, Vishnubhatla Sreenivas, Shobha Broor, Rama Chaudhry
To determine the prevalence and distribution of Chlamydia trachomatis genovars in patients with infertility by PCR-RFLP and ompA gene sequencing. Prevalence of other etiological agents (viz., Ureaplasma spp. and Mycoplasma hominis) were also assessed. Endocervical swabs were collected from 477 women and urine was collected from 151 men attending the Infertility Clinic. The samples were screened for C. trachomatis by cryptic plasmid, ompA gene and nested ompA gene PCR. Genotyping was performed by PCR-RFLP and sequencing...
December 2016: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/27828734/anti-inflammatory-effects-of-the-new-generation-synthetic-surfactant-chf5633-on-ureaplasma-induced-cytokine-responses-in-human-monocytes
#17
Kirsten Glaser, Markus Fehrholz, Birgit Henrich, Heike Claus, Michael Papsdorf, Christian P Speer
BACKGROUND: Synthetic surfactants represent a promising alternative to animal-derived preparations in the treatment of neonatal respiratory distress syndrome. The synthetic surfactant CHF5633 has proven biophysical effectiveness and, moreover, demonstrated anti-inflammatory effects in LPS-stimulated monocytes. With ureaplasmas being relevant pathogens in preterm lung inflammation, the present study addressed immunomodulatory features on Ureaplasma-induced monocyte cytokine responses. METHODS: Ureaplasma parvum-stimulated monocytes were exposed to CHF5633...
November 18, 2016: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/27803864/evaluation-of-patients-with-dry-eye-disease-for-conjunctival-chlamydia-trachomatis-and-ureaplasma-urealyticum
#18
Maha Mohssen Abdelfattah, Rania Abdelmonem Khattab, Magda H Mahran, Ebrahim S Elborgy
AIM: To determine the possibility of the development of dry eye disease (DED) as a result of persistent infection with Chlamydia trachomatis and Ureaplasma urealyticum in the conjunctiva of patients. METHODS: This study was conducted on 58 patients of age range 20-50y, diagnosed with DED confirmed by Schirmer I test and tear breakup time. The non-dry eye control group included 27 subjects of the same age. Ocular specimens were collected as conjunctival scrapings and swabs divided into three groups: the first used for bacterial culture, the second and third taken to detect Chlamydia trachomatis and Ureaplasma urealyticum by direct fluorescent antibody (DFA) assay and polymerase chain reaction (PCR) method...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/27798207/antibiotic-resistance-among-ureaplasma-spp-isolates-cause-for-concern
#19
REVIEW
M L Beeton, O B Spiller
There is growing global concern regarding the rise of antibiotic-resistant organisms. Many of these reports have focused on various Gram-positive and Gram-negative pathogens, with little attention to the genus Ureaplasma. Ureaplasma spp. are associated with numerous infectious diseases affecting pregnant women, neonates and the immunocompromised. Treatment options are extremely limited due to high levels of intrinsic resistance resulting from the unique physiology of these organisms and further restricted in cases of the developing fetus or neonate, often limiting therapeutic options to predominantly macrolides or rarely fluoroquinolones...
October 20, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/27796644/ureaplasma-parvum-causes-hyperammonemia-in-a-pharmacologically-immunocompromised-murine-model
#20
X Wang, K E Greenwood-Quaintance, M J Karau, D R Block, J N Mandrekar, S A Cunningham, J M Mallea, R Patel
A relationship between hyperammonemia and Ureaplasma infection has been shown in lung transplant recipients. We have demonstrated that Ureaplasma urealyticum causes hyperammonemia in a novel immunocompromised murine model. Herein, we determined whether Ureaplasma parvum can do the same. Male C3H mice were given mycophenolate mofetil, tacrolimus, and prednisone for 7 days, and then challenged with U. parvum intratracheally (IT) and/or intraperitoneally (IP), while continuing immunosuppression over 6 days. Plasma ammonia concentrations were determined and compared using Wilcoxon rank-sum tests...
October 28, 2016: European Journal of Clinical Microbiology & Infectious Diseases
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