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Kacerovsky M, Romero R, Stepan M, Stranik J, Maly J, Pliskova L, Bolehovska R, Palicka V, Zemlickova H, Hornychova H, Spacek J, Jacobsson B, Pacora P, Musilova I. Antibiotic administration reduces the rate of intraamniotic inflammation in preterm prelabor rupture of the membranes. Am J Obstet Gynecol 2020; 223:114.e1-114.e20. [PMID: 32591087 DOI: 10.1016/j.ajog.2020.01.043] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/22/2020] [Accepted: 01/24/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Preterm prelabor rupture of the membranes (PPROM) is frequently complicated by intraamniotic inflammatory processes such as intraamniotic infection and sterile intraamniotic inflammation. Antibiotic therapy is recommended to patients with PPROM to prolong the interval between this complication and delivery (latency period), reduce the risk of clinical chorioamnionitis, and improve neonatal outcome. However, there is a lack of information regarding whether the administration of antibiotics can reduce the intensity of the intraamniotic inflammatory response or eradicate microorganisms in patients with PPROM. OBJECTIVE The first aim of the study was to determine whether antimicrobial agents can reduce the magnitude of the intraamniotic inflammatory response in patients with PPROM by assessing the concentrations of interleukin-6 in amniotic fluid before and after antibiotic treatment. The second aim was to determine whether treatment with intravenous clarithromycin changes the microbial load of Ureaplasma spp DNA in amniotic fluid. STUDY DESIGN A retrospective cohort study included patients who had (1) a singleton gestation, (2) PPROM between 24+0 and 33+6 weeks, (3) a transabdominal amniocentesis at the time of admission, and (4) intravenous antibiotic treatment (clarithromycin for patients with intraamniotic inflammation and benzylpenicillin/clindamycin in the cases of allergy in patients without intraamniotic inflammation) for 7 days. Follow-up amniocenteses (7th day after admission) were performed in the subset of patients with a latency period lasting longer than 7 days. Concentrations of interleukin-6 were measured in the samples of amniotic fluid with a bedside test, and the presence of microbial invasion of the amniotic cavity was assessed with culture and molecular microbiological methods. Intraamniotic inflammation was defined as a bedside interleukin-6 concentration ≥745 pg/mL in the samples of amniotic fluid. Intraamniotic infection was defined as the presence of both microbial invasion of the amniotic cavity and intraamniotic inflammation; sterile intraamniotic inflammation was defined as the presence of intraamniotic inflammation without microbial invasion of the amniotic cavity. RESULTS A total of 270 patients with PPROM were included in this study: 207 patients delivered within 7 days and 63 patients delivered after 7 days of admission. Of the 63 patients who delivered after 7 days following the initial amniocentesis, 40 underwent a follow-up amniocentesis. Patients with intraamniotic infection (n = 7) and sterile intraamniotic inflammation (n = 7) were treated with intravenous clarithromycin. Patients without either microbial invasion of the amniotic cavity or intraamniotic inflammation (n = 26) were treated with benzylpenicillin or clindamycin. Treatment with clarithromycin decreased the interleukin-6 concentration in amniotic fluid at the follow-up amniocentesis compared to the initial amniocentesis in patients with intraamniotic infection (follow-up: median, 295 pg/mL, interquartile range [IQR], 72-673 vs initial: median, 2973 pg/mL, IQR, 1750-6296; P = .02) and in those with sterile intraamniotic inflammation (follow-up: median, 221 pg/mL, IQR 118-366 pg/mL vs initial: median, 1446 pg/mL, IQR, 1300-2941; P = .02). Samples of amniotic fluid with Ureaplasma spp DNA had a lower microbial load at the time of follow-up amniocentesis compared to the initial amniocentesis (follow-up: median, 1.8 × 104 copies DNA/mL, 2.9 × 104 to 6.7 × 108 vs initial: median, 4.7 × 107 copies DNA/mL, interquartile range, 2.9 × 103 to 3.6 × 107; P = .03). CONCLUSION Intravenous therapy with clarithromycin was associated with a reduction in the intensity of the intraamniotic inflammatory response in patients with PPROM with either intraamniotic infection or sterile intraamniotic inflammation. Moreover, treatment with clarithromycin was related to a reduction in the load of Ureaplasma spp DNA in the amniotic fluid of patients with PPROM <34 weeks of gestation.
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Smaoui M, Carole K, Sellami H, Kammoun S, Choura K, Maazoun L, Mestiri H, Aeby S, Louati D, Derbel M, Chaabene K, Hammami A, Greub G, Znazen A. Human miscarriage and infection in Tunisia: Role of Mycoplasma hominis and high Waddlia seroprevalence. J Infect Dev Ctries 2019; 13:410-418. [PMID: 32053510 DOI: 10.3855/jidc.9829] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 10/18/2018] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Miscarriage is one of the most common adverse pregnancy outcomes. The aim of this study was to investigate the relationship between miscarriage in humans and infections caused by zoonotic bacteria and genital pathogens. METHODOLOGY Cervicovaginal swabs and placenta samples from 132 women with miscarriage (patient group: PG), and cervicovaginal swabs from 54 women with normal pregnancy (control group:CG), were subjected to bacteriological culture and real time PCRs detecting Coxiella burnetii, Brucella spp, Mycoplasma hominis, Mycoplasma genitalium, Ureaplasma urealyticum, Chlamydia trachomatis, Waddlia chondrophila and Parachlamydia acanthamoebeae DNA. Serology of C. burnetii, C. trachomatis and W. chondrophila was also performed. RESULTS Placenta samples were positive for E. coli, S. agalactiae, U. urealyticum, M. hominis and C. trachomatis in 4.7%, 3.1%, 3.1%, 0.7% and 0.7% of cases, respectively. For cervicovaginal swabs, M. hominis was more frequently detected among PG than CG with a significant statistical difference (p = 0.02). C. trachomatis was detected in 3.3% and 5.5% among PG and CG, respectively. U. urealyticum DNA was detected with high percentages in the two groups. Samples from both groups showed negatives results for C. burnetii, Waddlia, and Brucella qPCRs. A high rate of W. chondrophila seroprevalence (42%) was noted with significant difference among women with early miscarriage. CONCLUSIONS C. trachomatis, S. agalactiae and M. hominis may play a role in miscarriage. However, the full characterization of the vaginal flora using other technologies such as NGS-based metagenomics is needed to clarify their role in miscarriage. Finally, further investigations should be performed to explain high W. chondrophila seroprevalence.
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Affiliation(s)
- Mariem Smaoui
- Laboratory of Microbiology, Research Laboratory "MPH", Habib Bourguiba University Hopsital of Sfax, Sfax University, Sfax, Tunisia.
| | - Kebbi Carole
- Center for Research on Intracellular Bacteria (CRIB), Institute of Microbiology, University of Lausanne and University Hospital of Lausanne, Lausanne, Switzerland.
| | - Hanen Sellami
- Laboratory of Microbiology, Research Laboratory "MPH", Habib Bourguiba University Hopsital of Sfax, Sfax University, Sfax, Tunisia.
| | - Salma Kammoun
- Maternity Department, Hedi Chaker University hospital of Sfax, Sfax, Tunisia.
| | - Khaled Choura
- Maternity Department, Hedi Chaker University hospital of Sfax, Sfax, Tunisia.
| | | | - Houssem Mestiri
- Maternity Department, Mahres Regional Hospital, Sfax, Tunisia.
| | - Sebastien Aeby
- Center for Research on Intracellular Bacteria (CRIB), Institute of Microbiology, University of Lausanne and University Hospital of Lausanne, Lausanne, Switzerland.
| | - Doulira Louati
- Maternity Department, Hedi Chaker University hospital of Sfax, Sfax, Tunisia.
| | - Mohamed Derbel
- Maternity Department, Hedi Chaker University hospital of Sfax, Sfax, Tunisia.
| | - Kais Chaabene
- Maternity Department, Hedi Chaker University hospital of Sfax, Sfax, Tunisia.
| | - Adnene Hammami
- Laboratory of Microbiology, Research Laboratory "MPH", Habib Bourguiba University Hopsital of Sfax, Sfax University, Tunisia AND Laboratory of treatment and valorization of wastewater (CERTE). Borj-Cedria technopark, Tunisia.
| | - Gilbert Greub
- Center for Research on Intracellular Bacteria (CRIB), Institute of Microbiology, University of Lausanne and University Hospital of Lausanne, Lausanne, Switzerland.
| | - Abir Znazen
- Laboratory of Microbiology, Research Laboratory "MPH", Habib Bourguiba University Hopsital of Sfax, Sfax University, Sfax, Tunisia.
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Vallely LM, Egli-Gany D, Pomat W, Homer CS, Guy R, Wand H, Silver B, Rumbold AR, Kaldor JM, Low N, Vallely AJ. Adverse pregnancy and neonatal outcomes associated with Neisseria gonorrhoeae, Mycoplasma genitalium, M. hominis, Ureaplasma urealyticum and U. parvum: a systematic review and meta-analysis protocol. BMJ Open 2018; 8:e024175. [PMID: 30498048 PMCID: PMC6278811 DOI: 10.1136/bmjopen-2018-024175] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/24/2018] [Accepted: 10/10/2018] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Several bacterial sexually transmitted and genital mycoplasma infections during pregnancy have been associated with poor pregnancy and perinatal outcomes. Comprehensive and systematic information about associations between sexually transmitted infections (STI) and genital infections in pregnancy and adverse perinatal outcomes is needed to improve understanding about the evidence for causal associations between these infections and adverse pregnancy and neonatal outcomes. Our primary objective is to systematically review the literature about associations between: (1) Neisseria gonorrhoeae in pregnancy and preterm birth; (2) Mycoplasma genitalium in pregnancy and preterm birth; (3) M. hominis, Ureaplasma urealyticum and/or U. parvum in pregnancy and preterm birth. METHODS AND ANALYSIS We will undertake a systematic search of Medline, Excerpta Medica database and the Cochrane Library and Cumulative Index to Nursing and Allied Health Literature. Following an initial screening of titles by one reviewer, abstracts will be independently assessed by two reviewers before screening of full-text articles. To exclude a manuscript, both reviewers need to agree on the decision. Any discrepancies will be resolved by discussion, or the adjudication of a third reviewer. Studies will be included if they report testing for one or more of N. gonorrhoeae, M. genitalium, M. hominis, U. urealyticum and/or U. parvum during pregnancy and report pregnancy and/or birth outcomes. In this review, the primary outcome is preterm birth. Secondary outcomes are premature rupture of membranes, low birth weight, spontaneous abortion, stillbirth, neonatal mortality and ophthalmia neonatorum. We will use standard definitions, or definitions reported by study authors. We will examine associations between exposure and outcome in forest plots, using the I2 statistic to examine between study heterogeneity. Where appropriate, we will use meta-analysis to combine results of individual studies. ETHICS AND DISSEMINATION This systematic review of published literature does not require ethical committee approval. Results of this review will be published in a peer reviewed, open access journal. PROSPERO REGISTRATION NUMBER CRD42016050962.
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Affiliation(s)
- Lisa M Vallely
- Public Health Interventions Research Group, Kirby Institute, University of New South Wales, Sydney, New South Wales, Australia
| | - Dianne Egli-Gany
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - William Pomat
- Director, Papua New Guinea Institute of Medical Research, Goroka, Eastern Highlands Province, Papua New Guinea
| | - Caroline Se Homer
- Centre for Midwifery, Child and Family Health, University of Technology Sydney, Sydney, New South Wales, Australia
- Co-Program Director Maternal and Child Health, Burnet Institute, Melbourne, Victoria, Australia
| | - Rebecca Guy
- Surveillance and Evaluation Research, The Kirby Institute, University of New South Wales, Sydney, New South Wales, Australia
| | - Handan Wand
- Biostatistics and Databases program, The Kirby Institute, University of New South Wales, Sydney, New South Wales, Australia
| | - Bronwyn Silver
- Public Health Division, Central Australian Aboriginal Congress, Alice Springs, Australia
| | - Alice R Rumbold
- Robinson Research Institute, University of Adelaide, Adelaide, Australia
| | - John M Kaldor
- Public Health Interventions Research Group, Kirby Institute, University of New South Wales, Sydney, New South Wales, Australia
| | - Nicola Low
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Andrew J Vallely
- Public Health Interventions Research Group, Kirby Institute, University of New South Wales, Sydney, New South Wales, Australia
- Sexual and Reproductive Health Unit, Papua New Guinea Institute of Medical Research, Goroka, Papua New Guinea
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Latino MA, Botta G, Badino C, Maria DD, Petrozziello A, Sensini A, Leli C. Association between genital mycoplasmas, acute chorioamnionitis and fetal pneumonia in spontaneous abortions. J Perinat Med 2018; 46:503-508. [PMID: 28599391 DOI: 10.1515/jpm-2016-0305] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 02/09/2017] [Indexed: 01/04/2023]
Abstract
AIM Ureaplasma parvum, Ureaplasma urealyticum and Mycoplasma hominis are also known as genital mycoplasmas. Acute chorioamnionitis is an inflammation of the placenta associated with miscarriage. We retrospectively evaluated a possible association between genital mycoplasmas detection, acute chorioamnionitis and fetal pneumonia from second and third trimester spontaneous abortions. METHODS One hundred and thirty placenta and fetal lung samples were evaluated for histological examination. The placenta samples, along with corresponding fetal tracheo-bronchial aspirates, also underwent bacterial and fungal culture and real-time polymerase chain reaction (PCR) assay for the detection of genital mycoplasmas. RESULTS Acute chorioamnionitis and pneumonia were diagnosed in 80/130 (61.5%) and 22/130 (16.9%) samples, respectively. Among samples positive for acute chorioamnionitis, the proportion of samples positive by real-time PCR and/or culture, was significantly higher than that of negative controls [54/80 (67.5%) vs. 26/80 (32.5%); P<0.001]. Ureaplasma parvum detection was significantly associated with acute chorioamnionitis compared to controls [9/11 (81.8%) vs. 2/11 (18.2%); P=0.019], as well as U. urealyticum [6/7 (85.7%) vs. 1/7 (14.3%); P=0.039]. Among tracheo-bronchial aspirates from abortions with pneumonia, the proportion of real-time PCR and/or culture positive samples was significantly higher than that of controls [13/22 (59.1%) vs. 9/22 (40.9%); P=0.029]. CONCLUSIONS A strong association was found between acute histologic chorioamnionitis and microbial invasion with U. parvum and/or U. urealyticum.
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Affiliation(s)
- Maria Agnese Latino
- Department of Laboratory Medicine, Unit of Bacteriology, Città della Salute e della Scienza, Turin, Italy
| | - Giovanni Botta
- Fetal and Maternal Pathology, Department of Pathology, OIRM/Sant' Anna, Città della Salute e della Scienza, Turin, Italy
| | - Claudia Badino
- Fetal and Maternal Pathology, Department of Pathology, OIRM/Sant' Anna, Città della Salute e della Scienza, Turin, Italy
| | - Daniela De Maria
- Department of Laboratory Medicine, Unit of Bacteriology, Città della Salute e della Scienza, Turin, Italy
| | - Annalisa Petrozziello
- Department of Laboratory Medicine, Unit of Bacteriology, Città della Salute e della Scienza, Turin, Italy
| | | | - Christian Leli
- Unit of Microbiology and Virology, University Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy
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Noda-Nicolau NM, Polettini J, Peltier MR, da Silva MG, Menon R. Combinations and loads of bacteria affect the cytokine production by fetal membranes: An in vitro study. Am J Reprod Immunol 2017; 76:504-511. [PMID: 27870156 DOI: 10.1111/aji.12596] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 09/26/2016] [Indexed: 01/01/2023] Open
Abstract
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 103 or 106 colony/color-forming units/mL alone or in combination. Cytokines/receptors were measured in the medium by immunoassays. RESULTS Stimulation of genital mycoplasmas did not increase the proinflammatory cytokines, except Ureaplasma urealyticum that increased IL-8 levels. However, U. urealyticum and Mycoplasma hominis significantly increased IL-10 and IL-13 levels. G. vaginalis alone or in combination with genital mycoplasmas showed an increased proinflammatory and anti-inflammatory cytokines. CONCLUSIONS G. vaginalis sustain a proinflammatory response in the fetal membranes in vitro, while genital mycoplasmas induce a strong control of the inflammatory response. The ability of genital mycoplasmas to control the proinflammatory response may favor their survival in the upper genital tract.
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Affiliation(s)
- Nathalia Mayumi Noda-Nicolau
- Division of Maternal-Fetal Medicine & Perinatal Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA.,Department of Pathology, Botucatu Medical School, UNESP - Univ. Estadual Paulista, Botucatu, São Paulo, Brazil
| | - Jossimara Polettini
- Division of Maternal-Fetal Medicine & Perinatal Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA.,Department of Pathology, Botucatu Medical School, UNESP - Univ. Estadual Paulista, Botucatu, São Paulo, Brazil
| | - Morgan R Peltier
- Department of Obstetrics & Gynecology, Winthrop University Hospital, Mineola, NY, USA.,Department of Biomedical Research, Winthrop University Hospital, Mineola, NY, USA
| | - Márcia Guimarães da Silva
- Department of Pathology, Botucatu Medical School, UNESP - Univ. Estadual Paulista, Botucatu, São Paulo, Brazil
| | - Ramkumar Menon
- Division of Maternal-Fetal Medicine & Perinatal Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA
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Maraki S, Mavromanolaki VE, Nioti E, Stafylaki D, Minadakis G. Prevalence and antimicrobial susceptibility of Ureaplasma species and Mycoplasma hominis in Greek female outpatients, 2012-2016. J Chemother 2017; 30:140-144. [PMID: 29182058 DOI: 10.1080/1120009x.2017.1404287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Mycoplasma hominis and Ureaplasma species are opportunistic pathogens associated with urogenital infections, complications during pregnancy and postpartum infections. Appropriate empirical antimicrobial treatment is necessary to achieve an optimal therapeutic outcome. This study evaluated the prevalence and the antimicrobial susceptibility of Mycoplasma hominis and Ureaplasma spp. isolated from 1,008 endocervical samples of outpatients in Crete, Greece, during a five-year period (2012-2016), using the commercially available Mycoview kit (Zeakon diagnostics, France). Ureaplasma spp. was isolated from 116 patients (11.5%), M. hominis from 6 (0.6%), while coinfection with both mycoplasmas was demonstrated in 17 (1.7%). All Ureaplasma strains were susceptible to josamycin and doxycycline. Doxycycline, minocycline and ofloxacin were the most potent antibiotics against M. hominis. Docycycline was proved the most active and is still the drug of choice for the treatment of genital mycoplasma infections. Local surveillance to monitor changes in antimicrobial susceptibilities is necessary to guide treatment strategies.
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Affiliation(s)
- Sofia Maraki
- a Department of Clinical Microbiology and Microbial Pathogenesis , University Hospital of Heraklion , Heraklion , Greece
| | | | - Eleni Nioti
- a Department of Clinical Microbiology and Microbial Pathogenesis , University Hospital of Heraklion , Heraklion , Greece
| | - Dimitra Stafylaki
- a Department of Clinical Microbiology and Microbial Pathogenesis , University Hospital of Heraklion , Heraklion , Greece
| | - George Minadakis
- a Department of Clinical Microbiology and Microbial Pathogenesis , University Hospital of Heraklion , Heraklion , Greece
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Ito S, Hanaoka N, Shimuta K, Seike K, Tsuchiya T, Yasuda M, Yokoi S, Nakano M, Ohnishi M, Deguchi T. Male non-gonococcal urethritis: From microbiological etiologies to demographic and clinical features. Int J Urol 2016; 23:325-31. [PMID: 26845624 DOI: 10.1111/iju.13044] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 12/02/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To detect microorganisms responsible for male acute urethritis and to define the microbiology of non-gonococcal urethritis. METHODS The present study comprised 424 men with symptoms and signs compatible with acute urethritis. Their urethral swabs and first-voided urine underwent detection of the microorganisms. Demographic characteristics and clinical features of Mycoplasma genitalium-, Ureaplasma urealyticum-, Haemophilus influenza-, adenovirus- or Herpes simplex virus-positive monomicrobial non-gonococcal urethritis, or all-examined microorganism-negative urethritis in heterosexual men were compared with urethritis positive only for Chlamydia trachomatis. RESULTS Neisseria gonorrhoeae was detected in 127 men (30.0%). In 297 men with non-gonococcal urethritis, C. trachomatis was detected in 143 (48.1%). In 154 men with non-chlamydial non-gonococcal urethritis, M. genitalium (22.7%), M. hominis (5.8%), Ureaplasma parvum (9.1%), U. urealyticum (19.5%), H. influenzae (14.3%), Neisseria meningitidis (3.9%), Trichomonas vaginalis (1.3%), human adenovirus (16.2%), and Herpes simplex virus types 1 (7.1%) and 2 (2.6%) were detected. Although some features of monomicrobial non-chlamydial non-gonococcal urethritis or all-examined microorganism-negative urethritis were significantly different from those of monomicrobial chlamydial non-gonococcal urethritis, most features were superimposed. CONCLUSIONS Predicting causative microorganisms in men with non-gonococcal urethritis based on demographic and clinical features is difficult. However, the present study provides useful information to better understand the microbiological diversity in non-gonococcal urethritis, and to manage patients with non-gonococcal urethritis appropriately.
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Affiliation(s)
| | - Nozomu Hanaoka
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ken Shimuta
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kensaku Seike
- Department of Urology, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Tomohiro Tsuchiya
- Department of Urology, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Mitsuru Yasuda
- Department of Urology, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Shigeaki Yokoi
- Department of Urology, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Masahiro Nakano
- Department of Urology, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Makoto Ohnishi
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takashi Deguchi
- Department of Urology, Graduate School of Medicine, Gifu University, Gifu, Japan
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Kutová R, Plíšková L, Kacerovský M. [Nonculture techniques of microorganisms determination in amniotic fluid in patients with preterm prelabor rupture of membranes]. Ceska Gynekol 2016; 81:384-388. [PMID: 27897025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE The preterm prelabor rupture of membranes is a serious obstetric complication that is frequently complicated by the presence of microorganisms in amniotic fluid. The aim of our work is to characterize current status of nonculture detection of microbial invasion into the amniotic cavity and the experience with the technique performed in University Hospital in Hradec Kralove. DESIGN Original survey article. SETTING Institute of Clinical Biochemistry and Diagnostics - molecular biology department, University Hospital Hradec Kralove. CONCLUSION Application of nonculture techniques of microorganisms determination in amniotic fluid in patients with preterm prelabor rupture of membranes is currently available. According to the detection of genital mycoplasmas as the dominant pathogens in the amniotic fluid this technique should be regarded as the standard examination method in these patients.
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Allen-Daniels MJ, Serrano MG, Pflugner LP, Fettweis JM, Prestosa MA, Koparde VN, Brooks JP, Strauss JF 3rd, Romero R, Chaiworapongsa T, Eschenbach DA, Buck GA, Jefferson KK. Identification of a gene in Mycoplasma hominis associated with preterm birth and microbial burden in intraamniotic infection. Am J Obstet Gynecol 2015; 212:779.e1-779.e13. [PMID: 25637842 DOI: 10.1016/j.ajog.2015.01.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 12/30/2014] [Accepted: 01/24/2015] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Microbial invasion of the amniotic cavity is associated with spontaneous preterm labor and adverse pregnancy outcome, and Mycoplasma hominis often is present. However, the pathogenic process by which M hominis invades the amniotic cavity and gestational tissues, often resulting in chorioamnionitis and preterm birth, remains unknown. We hypothesized that strains of M hominis vary genetically with regards to their potential to invade and colonize the amniotic cavity and placenta. STUDY DESIGN We sequenced the entire genomes of 2 amniotic fluid isolates and a placental isolate of M hominis from pregnancies that resulted in preterm births and compared them with the previously sequenced genome of the type strain PG21. We identified genes that were specific to the amniotic fluid/placental isolates. We then determined the microbial burden and the presence of these genes in another set of subjects from whom samples of amniotic fluid had been collected and were positive for M hominis. RESULTS We identified 2 genes that encode surface-located membrane proteins (Lmp1 and Lmp-like) in the sequenced amniotic fluid/placental isolates that were truncated severely in PG21. We also identified, for the first time, a microbial gene of unknown function that is referred to in this study as gene of interest C that was associated significantly with bacterial burden in amniotic fluid and the risk of preterm delivery in patients with preterm labor. CONCLUSION A gene in M hominis was identified that is associated significantly with colonization and/or infection of the upper reproductive tract during pregnancy and with preterm birth.
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