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Bhati T, Ray A, Arora R, Siraj F, Parvez S, Rastogi S. Immune regulation by activation markers at feto-maternal interface in infection-associated spontaneous preterm birth. Cytokine 2023; 170:156336. [PMID: 37595415 DOI: 10.1016/j.cyto.2023.156336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/20/2023]
Abstract
BACKGROUND Spontaneous preterm birth (sPTB) is a global health concern. Studies reveal infections are majorly responsible for sPTB and immune activation markers play a role in regulation of maternal immune responses against pathogens during sPTB. AIM To study the mRNA expression and correlation of activation markers (CD66a, ICAM1, ITGB1, TIM3, CD25, CD95) and associated cytokines (IL-1β and IL-17)/prostaglandin receptors (EP2 and IP) in the placenta of Chlamydia trachomatis, Mycoplasma hominis, Ureaplasma urealyticum-infected sPTB women. METHODS Placental samples were collected from 160 sPTB and 160 term birth women. PCR was used for the detection of C. trachomatis, M. hominis, U. urealyticum. The mRNA expression of activation markers, cytokines and prostaglandin receptors was evaluated by real-time qPCR. RESULTS The fold-change expression of CD66a, ICAM1, TIM3, CD25 and CD95 was 2.89, 5.5, 4.95, 6.44 and 6.95-fold (p < 0.001), respectively; while for cytokines- IL-1β and IL-17 was 5.41 and 4.71-fold (p < 0.001), respectively and for prostaglandin receptors- EP2 and IP was 5.5 and 5-fold (p < 0.001) upregulated, respectively in infected sPTB women. Significant positive correlation was obtained among ICAM-1 and IL-1β/EP2/IL-17, TIM3 and IP/IL-17. Significant negative correlation was obtained between CD66a and EP2/IL-17, CD25 and IL-1β/EP2, CD95 and IL-1β/EP2 in infected sPTB women. CONCLUSIONS CD66a, ICAM1 and TIM3 may play role in inflammation and have potential for the clinical beginning of preterm labour during infection while CD25 and CD95 are possibly involved in immunotolerance at feto-maternal interface during C. trachomatis, M. hominis and U. urealyticum infection.
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Affiliation(s)
- Tanu Bhati
- Molecular Microbiology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box no. 4909, New Delhi 110029, India
| | - Ankita Ray
- Molecular Microbiology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box no. 4909, New Delhi 110029, India
| | - Renu Arora
- Department of Obstetrics and Gynecology, Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, New Delhi 110029, India
| | - Fouzia Siraj
- Pathology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box no. 4909, New Delhi 110029, India
| | - Suhel Parvez
- Department of Medical Elementology and Toxicology, Jamia Hamdard, New Delhi 110062, India
| | - Sangita Rastogi
- Molecular Microbiology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box no. 4909, New Delhi 110029, India.
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Weatherly M, Trivedi A, Chembrolu R, Gupta S, Ramirez JM, Lavista Ferres JM, Anderson TM, Mitchell EA. Maternal infections in pregnancy and the risk of sudden unexpected infant death in the offspring in the U.S., 2011-2015. PLoS One 2023; 18:e0284614. [PMID: 37083949 PMCID: PMC10121007 DOI: 10.1371/journal.pone.0284614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 04/05/2023] [Indexed: 04/22/2023] Open
Abstract
BACKGROUND Infection is thought to play a part in some infant deaths. Maternal infection in pregnancy has focused on chlamydia with some reports suggesting an association with sudden unexpected infant death (SUID). OBJECTIVES We hypothesized that maternal infections in pregnancy are associated with subsequent SUID in their offspring. SETTING All births in the United States, 2011-2015. DATA SOURCE Centers for Disease Control and Prevention (CDC) Birth Cohort Linked Birth-Infant Death Data Files. STUDY DESIGN Cohort study, although the data were analysed as a case control study. Cases were infants that died from SUID. Controls were randomly sampled infants that survived their first year of life; approximately 10 controls per SUID case. EXPOSURES Chlamydia, gonorrhea and hepatitis C. RESULTS There were 19,849,690 live births in the U.S. for the period 2011-2015. There were 37,143 infant deaths of which 17,398 were classified as SUID cases (a rate of 0.86/1000 live births). The proportion of the control mothers with chlamydia was 1.7%, gonorrhea 0.2% and hepatitis C was 0.3%. Chlamydia was present in 3.8% of mothers whose infants subsequently died of SUID compared with 1.7% of controls (unadjusted OR = 2.35, 95% CI = 2.15, 2.56; adjusted OR = 1.08, 95% CI = 0.98, 1.19). Gonorrhea was present in 0.7% of mothers of SUID cases compared with 0.2% of mothers of controls (OR = 3.09, (2.50, 3.79); aOR = 1.20(0.95, 1.49)) and hepatitis C was present in 1.3% of mothers of SUID cases compared with 0.3% of mothers of controls (OR = 4.69 (3.97, 5.52): aOR = 1.80 (1.50, 2.15)). CONCLUSIONS The marked attenuation of SUID risk after adjustment for a wide variety of socioeconomic and demographic factors suggests the small increase in the risk of SUID of the offspring of mothers with infection with hepatitis C in pregnancy is due to residual confounding.
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Affiliation(s)
- Maggie Weatherly
- Master of Science in Data Science, University of Washington, Seattle, Washington, United States of America
| | - Anusua Trivedi
- AI for Good Lab, Microsoft, Redmond, Washington, United States of America
| | - Ratna Chembrolu
- Master of Science in Data Science, University of Washington, Seattle, Washington, United States of America
| | - Sanjana Gupta
- Master of Science in Data Science, University of Washington, Seattle, Washington, United States of America
| | - Jan-Marino Ramirez
- Seattle Children's Research Institute, Center for Integrative Brain Research, Seattle, Washington, United States of America
| | | | - Tatiana M Anderson
- AI for Good Lab, Microsoft, Redmond, Washington, United States of America
| | - Edwin A Mitchell
- Department of Paediatrics, Child and Youth Health, The University of Auckland, Auckland, New Zealand
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3
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Fennell C, Diseko M, Zash R, Mayondi G, Mabuta J, Mmalane M, Davey S, Luckett R, Morroni C, Dintwa EN, Lockman S, Makhema J, Caniglia E, Shapiro R. The Impact of Syndromic Management of Vaginal Discharge Syndrome on Adverse Birth Outcomes in Botswana. Open Forum Infect Dis 2021; 8:ofab366. [PMID: 34381845 PMCID: PMC8351807 DOI: 10.1093/ofid/ofab366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 07/07/2021] [Indexed: 11/13/2022] Open
Abstract
Background Vaginal discharge syndrome (VDS) is a common clinical diagnosis during pregnancy in Botswana; it is treated with broad-spectrum antibiotics using a syndromic approach. We evaluated associations between the syndromic management of VDS and adverse birth outcomes. Methods The Tsepamo Study performs birth outcomes surveillance at government hospitals throughout Botswana. Obstetric record data collected from August 2014 to March 2019 were analyzed. Chi-square tests were conducted to compare proportions of maternal characteristics and infant outcomes. To avoid immortal time bias, all analyses were conducted among women who presented to care before 24 weeks gestation, with VDS categorized as present or absent by 24 weeks gestation. Log-binomial regression models were generated to determine associations between treated VDS and infant outcomes. Results VDS was diagnosed in 36 731 (30.7%) pregnant women, of whom 33 328 (90.7%) received antibiotics. Adjusted analyses yielded a harmful association between treated VDS and very preterm delivery (adjusted risk ratio, 1.11; 95% CI, 1.02-1.21). This association remained when restricting to women with VDS who received the recommended antibiotic treatment regimen. Sensitivity analyses produced nonsignificant associations when women with treated VDS were compared with women without VDS who received antibiotics for other indications. Conclusions A clinical diagnosis of VDS is common among pregnant women in Botswana, and the majority receive antibiotics in pregnancy. Although analyses of VDS occurring later in pregnancy are precluded by immortal time bias, a modest association between treated VDS and very preterm delivery was observed among women diagnosed with VDS by 24 weeks gestation.
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Affiliation(s)
- Christina Fennell
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Modeigi Diseko
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana
| | - Rebecca Zash
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana.,Division of Infectious Disease, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.,Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Gloria Mayondi
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana
| | - Judith Mabuta
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana
| | - Mompati Mmalane
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana
| | - Sonya Davey
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana.,Department of Internal Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Rebecca Luckett
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana.,Scottish Livingston Hospital, Molepolole, Botswana.,Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.,Department of Obstetrics and Gynecology, University of Botswana, Gaborone, Botswana
| | - Chelsea Morroni
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana.,Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Eldah N Dintwa
- Botswana Ministry of Health and Wellness, Gaborone, Botswana
| | - Shahin Lockman
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana.,Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Division of Infectious Diseases, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Joseph Makhema
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana.,Division of Infectious Disease, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Ellen Caniglia
- Department of Population Health, New York University Grossman School of Medicine, New York, New York, USA
| | - Roger Shapiro
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana.,Division of Infectious Disease, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.,Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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4
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Adachi KN, Nielsen-Saines K, Klausner JD. Chlamydia trachomatis Screening and Treatment in Pregnancy to Reduce Adverse Pregnancy and Neonatal Outcomes: A Review. Front Public Health 2021; 9:531073. [PMID: 34178906 PMCID: PMC8222807 DOI: 10.3389/fpubh.2021.531073] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/19/2021] [Indexed: 11/13/2022] Open
Abstract
Chlamydial trachomatis infection has been associated with adverse pregnancy and neonatal outcomes such as premature rupture of membranes, preterm birth, low birth weight, conjunctivitis, and pneumonia in infants. This review evaluates existing literature to determine potential benefits of antenatal screening and treatment of C. trachomatis in preventing adverse outcomes. A literature search revealed 1824 studies with 156 full-text articles reviewed. Fifteen studies were selected after fulfilling inclusion criteria. Eight studies focused on chlamydial screening and treatment to prevent adverse pregnancy outcomes such as premature rupture of membranes, preterm birth, low birth weight, growth restriction leading to small for gestational age infants, and neonatal death. Seven studies focused on the effects of chlamydial screening and treatment on adverse infant outcomes such as chlamydial infection including positive mucosal cultures, pneumonia, and conjunctivitis. Given the heterogeneity of those studies, this focused review was exclusively qualitative in nature. When viewed collectively, 13 of 15 studies provided some degree of support that antenatal chlamydial screening and treatment interventions may lead to decreased adverse pregnancy and infant outcomes. However, notable limitations of these individual studies also highlight the need for further, updated research in this area, particularly from low and middle-income settings.
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Affiliation(s)
- Kristina N Adachi
- Division of Infectious Diseases, Department of Pediatrics, University of California, Los Angeles (UCLA) David Geffen School of Medicine, Los Angeles, CA, United States
| | - Karin Nielsen-Saines
- Division of Infectious Diseases, Department of Pediatrics, University of California, Los Angeles (UCLA) David Geffen School of Medicine, Los Angeles, CA, United States
| | - Jeffrey D Klausner
- Division of Disease Prevention, Policy and Global Health, Department of Preventive Medicine, University of Southern California Keck School of Medicine, Los Angeles, CA, United States
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Vercruysse J, Mekasha S, Stropp LM, Moroney J, He X, Liang Y, Vragovic O, Valle E, Ballard J, Pudney J, Kuohung W, Ingalls RR. Chlamydia trachomatis Infection, when Treated during Pregnancy, Is Not Associated with Preterm Birth in an Urban Safety-Net Hospital. Infect Dis Obstet Gynecol 2020; 2020:8890619. [PMID: 33082702 PMCID: PMC7556048 DOI: 10.1155/2020/8890619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 09/24/2020] [Indexed: 11/18/2022] Open
Abstract
Preterm birth is a major public health problem, occurring in more than half a million births per year in the United States. A number of maternal conditions have been recognized as risk factors for preterm birth, but for the majority of cases, the etiology is not completely understood. Chlamydia trachomatis is one of the most prevalent sexually transmitted infections in the world. However, its role in adverse pregnancy outcome in women is still debated. In order to determine if genitourinary tract infection with C. trachomatis during pregnancy was associated with preterm birth, we conducted a case-control study on women who delivered at Boston Medical Center, an urban "safety-net" hospital that serves a socioeconomically disadvantaged and racially diverse population. Women with known risk factors for preterm birth or immune suppression were excluded. Variables collected on enrolled subjects included demographics; diagnosis of C. trachomatis during or prior to pregnancy; tobacco, alcohol, and illicit substance use; gestational age; and birthweight and gender of the newborn. We also collected urine for chlamydia testing at the time of delivery and placental biopsies for nucleic acid amplification and histological studies. A total of 305 subjects were enrolled: 100 who delivered preterm and 205 who delivered full term. Among those subjects, we identified 19 cases of pregnancy-associated C. trachomatis infection: 6/100 preterm and 13/205 full term, a difference which was not statistically significant. Only two cases of untreated chlamydia infection were identified postpartum, and both occurred in women who delivered at term. We conclude that genitourinary tract infection with C. trachomatis during pregnancy, when appropriately treated, is not associated with preterm birth.
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Affiliation(s)
| | - Samrawit Mekasha
- Section of Infectious Diseases, Department of Medicine, Boston Medical Center, Boston, MA, USA
| | | | - James Moroney
- Boston University School of Graduate Medical Sciences, Boston, MA, USA
| | - Xianbao He
- Section of Infectious Diseases, Department of Medicine, Boston Medical Center, Boston, MA, USA
- Boston University School of Medicine, Boston, MA, USA
| | - Yanmei Liang
- Section of Infectious Diseases, Department of Medicine, Boston Medical Center, Boston, MA, USA
| | - Olivera Vragovic
- Department of Obstetrics and Gynecology, Boston Medical Center, Boston, MA, USA
| | - Eduardo Valle
- Boston University School of Public Health, Boston, MA, USA
| | - Jennifer Ballard
- Boston University School of Medicine, Boston, MA, USA
- Department of Obstetrics and Gynecology, Boston Medical Center, Boston, MA, USA
| | - Jeffrey Pudney
- Boston University School of Medicine, Boston, MA, USA
- Department of Obstetrics and Gynecology, Boston Medical Center, Boston, MA, USA
| | - Wendy Kuohung
- Boston University School of Medicine, Boston, MA, USA
- Department of Obstetrics and Gynecology, Boston Medical Center, Boston, MA, USA
| | - Robin R. Ingalls
- Section of Infectious Diseases, Department of Medicine, Boston Medical Center, Boston, MA, USA
- Boston University School of Medicine, Boston, MA, USA
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6
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Tang W, Mao J, Li KT, Walker JS, Chou R, Fu R, Chen W, Darville T, Klausner J, Tucker JD. Pregnancy and fertility-related adverse outcomes associated with Chlamydia trachomatis infection: a global systematic review and meta-analysis. Sex Transm Infect 2020; 96:322-329. [PMID: 31836678 PMCID: PMC7292777 DOI: 10.1136/sextrans-2019-053999] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 11/11/2019] [Accepted: 11/25/2019] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Genital chlamydia infection in women is often asymptomatic, but may result in adverse outcomes before and during pregnancy. The purpose of this study was to examine the strength of the relationships between chlamydia infection and different reproductive health outcomes and to assess the certainty of the evidence. METHODS This review was registered and followed the Cochrane guidelines. We searched three databases to quantitatively examine adverse outcomes associated with chlamydia infection. We included pregnancy and fertility-related outcomes. We performed meta-analyses on different study designs for various adverse outcomes using unadjusted and adjusted analyses. RESULTS We identified 4730 unique citations and included 107 studies reporting 12 pregnancy and fertility-related outcomes. Sixty-eight studies were conducted in high-income countries, 37 studies were conducted in low-income or middle-income countries, and 2 studies were conducted in both high-income and low-income countries. Chlamydia infection was positively associated with almost all of the 12 included pregnancy and fertility-related adverse outcomes in unadjusted analyses, including stillbirth (OR=5.05, 95% CI 2.95 to 8.65 for case-control studies and risk ratio=1.28, 95% CI 1.09 to 1.51 for cohort studies) and spontaneous abortion (OR=1.30, 95% CI 1.14 to 1.49 for case-control studies and risk ratio=1.47, 95% CI 1.16 to 1.85 for cohort studies). However, there were biases in the design and conduct of individual studies, affecting the certainty of the overall body of evidence. The risk of adverse outcomes associated with chlamydia is higher in low-income and middle-income countries compared with high-income countries. CONCLUSION Chlamydia is associated with an increased risk of several pregnancy and fertility-related adverse outcomes in unadjusted analyses, especially in low-income and middle-income countries. Further research on how to prevent the sequelae of chlamydia in pregnant women is needed. TRIAL REGISTRATION NUMBER CRD42017056818.
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Affiliation(s)
- Weiming Tang
- Project-China, University of North Carolina, Guangzhou, China
- STI Control, Guangdong Provincial Center for Skin Diseases and STIs control, Guangzhou, Guangdong, China
| | - Jessica Mao
- Depatment of Obstetrics and Gynecology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Katherine T Li
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Jennifer S Walker
- Health Sciences Library, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, USA
| | - Roger Chou
- School of Medicine, Oregon Health and Science University, Portland, Oregon, USA
| | - Rong Fu
- Department of AIDS/STD Control and Prevention, Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Weiying Chen
- Social Entrepreneurship to Spur Health, Guangzhou, Guangdong, China
- Center for Chronic Disease Control, Shenzhen, Guangdong, China
| | - Toni Darville
- Pediatrics, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Jeffrey Klausner
- Medicine, University of California, Los Angeles, San Francisco, California, USA
| | - Joseph D Tucker
- UNC Project-China, Guangzhou, Guangdong, China
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
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7
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He W, Jin Y, Zhu H, Zheng Y, Qian J. Effect of Chlamydia trachomatis on adverse pregnancy outcomes: a meta-analysis. Arch Gynecol Obstet 2020; 302:553-567. [PMID: 32643040 DOI: 10.1007/s00404-020-05664-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 06/18/2020] [Indexed: 11/27/2022]
Abstract
PURPOSE To analyze the effect of Chlamydia trachomatis (C. trachomatis) on adverse pregnancy outcomes based on the currently available evidence. METHODS Multiple databases were comprehensively searched from the available date of inception through December 9, 2019. The effect of C. trachomatis on adverse pregnancy outcomes was assessed using pooled odds rations (ORs) and 95% confidence intervals (CIs). Egger's test was used for publication bias. RESULTS Fifty studies involving 502,141 participants were identified. C. trachomatis infection was found to be associated with preterm birth in antibody detection [OR (95% CI): 1.571 (1.112-2.220), P = 0.010] and high-quality assessment [OR (95% CI): 1.734 (1.295-2.321), P < 0.001], preterm premature rupture of membranes (PPROM) in culture detection [OR (95% CI): 4.339 (1.806-10.424), P = 0.001] and high-quality assessment [OR (95% CI): 2.822 (1.333-5.973), P = 0.007], stillbirth [OR (95% CI): 1.585 (1.219-2.062), P = 0.001], low-birthweight babies [OR (95% CI): 2.205 (1.137-4.274), P = 0.019], and babies small for gestational age [OR (95% CI): 1.193 (1.091-1.305), P < 0.001]. No publication bias was exhibited in miscarriage (P = 0.170), preterm birth (P = 0.303), PPROM (P = 0.341), stillbirth (P = 0.533), and low-birthweight babies (P = 0.535). CONCLUSIONS C. trachomatis infection during pregnancy is associated with a higher risk of preterm birth, PPROM, stillbirth, low-birthweight babies, and babies small for gestational age.
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MESH Headings
- Abortion, Spontaneous
- Chlamydia Infections/diagnosis
- Chlamydia Infections/epidemiology
- Chlamydia Infections/microbiology
- Chlamydia trachomatis/isolation & purification
- Female
- Fetal Membranes, Premature Rupture/epidemiology
- Fetal Membranes, Premature Rupture/microbiology
- Humans
- Infant, Low Birth Weight
- Infant, Newborn
- Infant, Small for Gestational Age
- Obstetric Labor, Premature/epidemiology
- Pregnancy
- Pregnancy Complications, Infectious/diagnosis
- Pregnancy Complications, Infectious/epidemiology
- Pregnancy Complications, Infectious/microbiology
- Pregnancy Outcome/epidemiology
- Premature Birth/epidemiology
- Stillbirth
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Affiliation(s)
- Weihua He
- Department of Gynecology, The First Affiliated Hospital, College of Medicine, Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, People's Republic of China
| | - Yue Jin
- Department of Gynecology, The First Affiliated Hospital, College of Medicine, Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, People's Republic of China
| | - Haibin Zhu
- Department of Gynecology, The First Affiliated Hospital, College of Medicine, Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, People's Republic of China
| | - Yan Zheng
- Department of Gynecology, The First Affiliated Hospital, College of Medicine, Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, People's Republic of China
| | - Jianhua Qian
- Department of Gynecology, The First Affiliated Hospital, College of Medicine, Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, People's Republic of China.
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Hill AV, Perez-Patron M, Tekwe CD, Menon R, Hairrell D, Taylor BD. Chlamydia trachomatis Is Associated With Medically Indicated Preterm Birth and Preeclampsia in Young Pregnant Women. Sex Transm Dis 2020; 47:246-252. [PMID: 32004256 PMCID: PMC8096198 DOI: 10.1097/olq.0000000000001134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Studies on Chlamydia trachomatis-associated pregnancy outcomes are largely conflicting, ignoring the heterogeneous natures of pregnancy complications and potential effect modification by maternal age. This study determined if prenatal C. trachomatis infection is associated with preterm birth (PTB) and preeclampsia subtypes. METHODS A retrospective cohort study was conducted using 22,772 singleton pregnancies with a prenatal C. trachomatis diagnostic test. Spontaneous and medically indicated PTBs, and term and preterm preeclampsia were outcomes. Modified Poisson regression calculated relative risk (RR) and 95% confidence intervals (CI) with propensity score adjustments stratified by maternal ages <25 and ≥25 years. RESULTS Overall, C. trachomatis was significantly associated with term preeclampsia (adjusted RR [RRadj], 1.88; 95% CI, 1.38-2.57). Among young women (age <25 years), C. trachomatis was significantly associated with medically indicated PTB (RRadj, 2.29; 95% CI, 1.38-3.78) and term preeclampsia (RRadj, 1.57; 95% CI, 1.05-2.36) in propensity-adjusted models. No significant associations in older women were detected. CONCLUSION C. trachomatis was associated with medically indicated PTB and term preeclampsia in young women. Associations between chlamydia and perinatal outcomes may depend on the subtype of PTB and preeclampsia, which should be investigated through mechanistic studies.
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Affiliation(s)
- Ashley V. Hill
- Division of Adolescent and Young Adult Medicine, UPMC Children’s Hospital of Pittsburgh, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
- Department of Epidemiology and Biostatistics, School of Public Health, Texas A&M University, College Station, TX USA
| | - Maria Perez-Patron
- Department of Epidemiology and Biostatistics, School of Public Health, Texas A&M University, College Station, TX USA
| | - Carmen D. Tekwe
- Department of Epidemiology and Biostatistics, Indiana University School of Public Health, Bloomington, IN USA
| | - Ramkumar Menon
- Division of Maternal-Fetal Medicine & Perinatal Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX USA
| | - Deanna Hairrell
- Department of Epidemiology and Biostatistics, School of Public Health, Texas A&M University, College Station, TX USA
| | - Brandie D. Taylor
- Department of Epidemiology and Biostatistics, School of Public Health, Texas A&M University, College Station, TX USA
- Department of Epidemiology and Biostatistics, College of Public Health, Temple University, Philadelphia, PA USA
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9
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Gadoth A, Shannon CL, Hoff NA, Mvumbi G, Musene K, Okitolonda-Wemakoy E, Hoffman RM, Rimoin AW, Klausner JD. Prenatal chlamydial, gonococcal, and trichomonal screening in the Democratic Republic of Congo for case detection and management. Int J STD AIDS 2020; 31:221-229. [PMID: 31996095 DOI: 10.1177/0956462419888315] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Prenatal Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and Trichomonas vaginalis (TV) infections are associated with adverse birth outcomes. As rapid diagnostic tests become available, it is important to evaluate prenatal sexually transmitted infection (STI) prevalence, as well as the acceptability and feasibility of prenatal screening programs. We recruited 371 pregnant women from four clinics in Kisantu Health Zone, Democratic Republic of Congo (DRC) from October 2016 to March 2017. Trained clinicians collected cervical swabs, and samples were tested by nucleic acid amplification for CT, NG, and TV using a GeneXpert® system. Those testing positive for an STI were treated and asked to return after 4–8 weeks for tests-of-cure. Screening for STIs was widely accepted (99%). STI prevalence at baseline was CT, 3.2%; NG, 1.5%; and TV, 14%; treatment completion was 97%. Symptoms were reported among 34% of STI-positive women at baseline, compared with 37% of STI-negative women. Upon first test-of-cure, 100% of returning women were cured of CT ( n = 10) and NG ( n = 5), but only 47% were cured of TV. This study demonstrates the feasibility of implementing diagnostic STI testing for case detection and treatment among expectant mothers in DRC, with implications for maternal and birth outcomes.
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Affiliation(s)
- Adva Gadoth
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA
| | - Chelsea L Shannon
- Division of Infectious Diseases, Department of Medicine, University of California, Los Angeles, CA, USA
| | - Nicole A Hoff
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA
| | - Gisèle Mvumbi
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of Congo
| | - Kamy Musene
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of Congo
| | | | - Risa M Hoffman
- Division of Infectious Diseases, Department of Medicine, University of California, Los Angeles, CA, USA
| | - Anne W Rimoin
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA
| | - Jeffrey D Klausner
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA.,Division of Infectious Diseases, Department of Medicine, University of California, Los Angeles, CA, USA
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10
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Wynn A, Moucheraud C, Moshashane N, Offorjebe OA, Ramogola-Masire D, Klausner JD, Morroni C. Using partner notification to address curable sexually transmitted infections in a high HIV prevalence context: a qualitative study about partner notification in Botswana. BMC Public Health 2019; 19:606. [PMID: 31138228 PMCID: PMC6538557 DOI: 10.1186/s12889-019-6813-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Partner notification is an essential component of sexually transmitted infection (STI) management. The process involves identifying exposed sex partner(s), notifying these partner(s) about their exposure to a curable STI, and offering counselling and treatment for the STI as a part of syndromic management or after results from an STI test. When implemented effectively, partner notification services can prevent the index patient from being reinfected with a curable STI from an untreated partner, reduce the community burden of curable STIs, and prevent adverse health outcomes in both the index patient and his or her sex partner(s). However, partner notification and treatment rates are often low. This study seeks to explore experiences and preferences related to partner notification and treatment for curable STIs among pregnant women receiving care in an antenatal clinic with integrated HIV and curable STI testing. Results are intended to inform efforts to improve partner notification and treatment rates in Southern Africa. METHODS We conducted qualitative interviews among women diagnosed with Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and/or Trichomonas vaginalis (TV) infection while seeking antenatal care in Gaborone, Botswana. Semi-structured interviews were used to obtain women's knowledge about STIs and their experiences and preferences regarding partner notification. RESULTS Fifteen women agreed to participate in the study. The majority of women had never heard of CT, NG, or TV infections prior to testing. Thirteen out of 15 participants had notified partners about the STI diagnosis. The majority of notified partners received some treatment; however, partner treatment was often delayed. Most women expressed a preference for accompanying partners to the clinic for treatment. Experiences and preferences did not differ by HIV infection status. CONCLUSIONS The integration of STI, HIV, and antenatal care services may have contributed to most women's willingness to notify partners. However, logistical barriers to partner treatment remained. More research is needed to identify effective and appropriate strategies for scaling-up partner notification services in order to improve rates of partners successfully contacted and treated, reduce rates of STI reinfection during pregnancy, and ultimately reduce adverse maternal and infant outcomes attributable to antenatal STIs.
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Affiliation(s)
- Adriane Wynn
- GloCal, University of California Global Health Institute, 550 16th Street, 3rd Floor, San Francisco, CA 94158 USA
- Division of Infectious Diseases & Global Public Health, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093 USA
| | - Corrina Moucheraud
- Fielding School of Public Health, Department of Health Policy and Management, University of California Los Angeles, 31-269 CHS, Box 951772, Los Angeles, CA 90095 USA
| | - Neo Moshashane
- Botswana-UPenn Partnership, UB Main Campus, Gaborone, Botswana
| | - Ogechukwu Agatha Offorjebe
- David Geffen School of Medicine, University of California Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095 USA
- Charles R. Drew University of Medicine and Science, 1731 E 120th St, Los Angeles, CA 90059 USA
| | | | - Jeffrey D. Klausner
- David Geffen School of Medicine, University of California Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095 USA
| | - Chelsea Morroni
- Botswana-UPenn Partnership, UB Main Campus, Gaborone, Botswana
- Liverpool School of Tropical Medicine, Liverpool, UK
- Department of Medicine, University of Botswana, Gaborone, Botswana
- Wits Reproductive Health and HIV Institute, University of Witwatersrand, Johannesburg, South Africa
- Women’s Health Research Unit, University of Cape Town, Cape Town, South Africa
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11
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Shannon CL, Bristow C, Hoff N, Wynn A, Nguyen M, Medina-Marino A, Cabeza J, Rimoin A, Klausner JD. Acceptability and Feasibility of Rapid Chlamydial, Gonococcal, and Trichomonal Screening and Treatment in Pregnant Women in 6 Low- to Middle-Income Countries. Sex Transm Dis 2018; 45:673-676. [PMID: 29528996 PMCID: PMC6129444 DOI: 10.1097/olq.0000000000000832] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and Trichomonas vaginalis (TV) infections during pregnancy are linked with adverse birth outcomes. However, few countries have prenatal CT, NG, or TV screening programs. In this study, we aimed to evaluate the acceptability and feasibility of CT, NG, and TV screening and treatment among pregnant women across 6 low- to middle-income countries. METHODS A total of 1817 pregnant women were screened for CT, NG, and TV in Botswana, the Democratic Republic of Congo, Haiti, South Africa, and Vietnam. An additional 640 pregnant women were screened for CT in Peru. Screening occurred between December 2012 and October 2017. Acceptability of screening was evaluated at each site as the proportion of eligible women who agreed to participate in screening. Feasibility of treatment was calculated as the proportion of women who tested positive that received treatment. RESULTS Acceptability of screening and feasibility of treatment was high across all 6 sites. Acceptability of screening ranged from 85% to 99%, and feasibility of treatment ranged from 91% to 100%. DISCUSSION The high acceptability and feasibility of screening and treatment of CT, NG, and TV among pregnant women supports further research to evaluate the cost-effectiveness of prenatal CT, NG, and TV screening programs.
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Affiliation(s)
| | - Claire Bristow
- Division of Global Public Health, Department of Medicine, University of California, San Diego, La Jolla
| | - Nicole Hoff
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA
| | | | - Minh Nguyen
- Department of Epidemiology, Hanoi Medical University, Hanoi, Vietnam
| | | | - Jeanne Cabeza
- South American Program in HIV Prevention Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
| | - Anne Rimoin
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA
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12
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Prevalence of Chlamydia trachomatis and Neisseria gonorrhoeae infections among pregnant women and eye colonization of their neonates at birth time, Shiraz, Southern Iran. BMC Infect Dis 2018; 18:477. [PMID: 30249196 PMCID: PMC6154405 DOI: 10.1186/s12879-018-3382-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 09/13/2018] [Indexed: 11/19/2022] Open
Abstract
Background Chlamydia trachomatis and Neisseria gonorrhoeae are the two common transmissible pathogens from pregnant women to their neonates. Given the lack of routine screening and treatment of pregnant women in some areas, the possibility of transmission rises. This study seeks to determine the prevalence of C. trachomatis and N. gonorrhoeae in the pregnant women with no clinical symptoms and the vertical transmission rate to their neonates. Methods The study was conducted on endocervical and eye swab samples of 239 pregnant women and their neonates. Identification was based on PCR method. Results The prevalence rates of C.trachomatis in women and neonates were 37/239 (15.5%) and 28/239 (11.7%), and for N. gonorrhoeae 3/239 (1.3%), 1/239 (0.4%), respectively. The vertical transmission rates to the neonates were 28/37(75.6%) for C. trachomatis and 1/3 for N. gonorrhoeae. Conclusions In the areas with a high prevalence of chlamydial or gonococcal infections, and in the absence of screening and treatment of the pregnant women, ocular prophylaxis with antibiotics is suggested as a part of routine neonatal care program for the prevention of chlamydial and gonococcal ophthalmia.
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13
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Ahmadi A, Ramazanzadeh R, Sayehmiri K, Sayehmiri F, Amirmozafari N. Association of Chlamydia trachomatis infections with preterm delivery; a systematic review and meta-analysis. BMC Pregnancy Childbirth 2018; 18:240. [PMID: 29914397 PMCID: PMC6006861 DOI: 10.1186/s12884-018-1868-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 05/31/2018] [Indexed: 11/15/2022] Open
Abstract
Background Premature birth is a primary cause of infant mortality and its etiology varies in different countries. Chlamydia trachomatis (CT) is a common infectious agent transmitted through sexual contact. The purpose of this study is to investigate the connection between CT infections and preterm birth by meta-analysis. Methods All articles published in literature databases including Google Scholar, PubMed, ISI (Web of Science), Biological Abs, IranMedex, SID, and Scopus were investigated. Twenty-four relevant articles, authored betweenm 1998–2014 were analyzed through a random effects model. Heterogeneity of the studies was evaluated by I2 index. The relationship between years of data collection, sample size, and CT infections with preterm delivery prevalence was examined by meta-regression. Data were analyzed with R and STATA [Ver. 12]. Results The overall prevalence of CT infections leading to preterm deliveries was estimated to be 0.13% (CI 95%: 0.11–0.16). The prevalence of CT infections leading to preterm deliveries were calculated based on the study method including PCR [0.06 (CI 95%: 0.04–0.09)], serology [0.23 (CI 95%: 0.10–0.35)] and culture [0.17 (CI 95%: 0.10–0.24)]. Analysis indicates that women with chlamydia infections were 2.28 more likely to deliver pre-term in comparison with those who were not infected. It can be concluded that chlamydia infections increase the risks of preterm delivery, OR = 2.28 (95% CI:1.64–3.16). Conclusions In regard to the results in numerous studies performed on different continents, this meta- analysis showed a clear association between preterm delivery and prior CT colonization. Electronic supplementary material The online version of this article (10.1186/s12884-018-1868-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Amjad Ahmadi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Pasdaran Street, Sanandaj, 66177-13446, Iran. .,Microbiology Department, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Rashid Ramazanzadeh
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Pasdaran Street, Sanandaj, 66177-13446, Iran. .,Microbiology Department, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Koroush Sayehmiri
- Psychosocial Injuries Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Fatemeh Sayehmiri
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nour Amirmozafari
- Microbiology Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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14
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Serum antibody response to Chlamydia trachomatis TroA and HtrA in women with tubal factor infertility. Eur J Clin Microbiol Infect Dis 2018; 37:1499-1502. [PMID: 29777489 DOI: 10.1007/s10096-018-3276-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 05/09/2018] [Indexed: 10/16/2022]
Abstract
Persistent genital chlamydial infection may lead to tubal factor infertility (TFI). Chlamydia trachomatis TroA and HtrA are proteins expressed during persistent chlamydial infection in vitro. We studied serum IgG antibody response against these proteins by EIA in women with TFI and in subfertile women without tubal pathology. Altogether, 22 of 258 subfertile women (8.5%) had TFI which was unilateral in 17 cases and bilateral in 5 cases. Overall, 55 (21.3%) of the 258 women had TroA and 39 (15.1%) had HtrA antibodies. Seropositivity to TroA and HtrA was more common among women with TFI than women with other causes for subfertility (45.5 vs. 19.1%, p = 0.004 for TroA; 36.4 vs. 13.1%, p = 0.004 for HtrA). Mean absorbance values and the prevalence of TroA and HtrA antibodies increased with increasing severity of TFI. On the basis of our results, TroA and HtrA serology has the potential to be further developed to a specific biomarker for C. trachomatis-related TFI.
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15
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Stereochemical basis for the anti-chlamydial activity of the phosphonate protease inhibitor JO146. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.10.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Olson-Chen C, Balaram K, Hackney DN. Chlamydia trachomatis and Adverse Pregnancy Outcomes: Meta-analysis of Patients With and Without Infection. Matern Child Health J 2018; 22:812-821. [DOI: 10.1007/s10995-018-2451-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Reekie J, Roberts C, Preen D, Hocking JS, Donovan B, Ward J, Mak DB, Liu B. Chlamydia trachomatis and the risk of spontaneous preterm birth, babies who are born small for gestational age, and stillbirth: a population-based cohort study. THE LANCET. INFECTIOUS DISEASES 2018; 18:452-460. [PMID: 29371067 DOI: 10.1016/s1473-3099(18)30045-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 10/19/2017] [Accepted: 11/03/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Chlamydia trachomatis is one of the most commonly diagnosed sexually transmitted infections worldwide, but reports in the medical literature of an association between genital chlamydia infection and adverse obstetric outcomes are inconsistent. METHODS The Western Australia Data Linkage Branch created a cohort of women of reproductive age by linking records of birth registrations with the electoral roll for women in Western Australia who were born from 1974 to 1995. The cohort was then linked to both chlamydia testing records and the state perinatal registry for data on preterm births and other adverse obstetric outcomes. We determined associations between chlamydia testing, test positivity, and adverse obstetric outcomes using multivariate logistic regression analyses. FINDINGS From 2001 to 2012, 101 558 women aged 15 to 38 years had a singleton birth. Of these women, 3921 (3·9%) had a spontaneous preterm birth, 9762 (9·6% of 101 371 women with available data) had a baby who was small for gestational age, and 682 (0·7%) had a stillbirth. During their pregnancy, 21 267 (20·9%) of these women had at least one chlamydia test record, and 1365 (6·4%) of those tested were positive. Before pregnancy, 19 157 (18·9%) of these women were tested for chlamydia, of whom 1595 (8·3%) tested positive for chlamydia. Among all women with a test record, after adjusting for age, ethnicity, maternal smoking, and history of other infections, we found no significant association between a positive test for chlamydia and spontaneous preterm birth (adjusted odds ratio 1·08 [95% CI 0·91-1·28]; p=0·37), a baby who was small for gestational age (0·95 [0·85-1·07]; p=0·39), or stillbirth (0·93 [0·61-1·42]; p=0·74). INTERPRETATION A genital chlamydia infection that is diagnosed and, presumably, treated either during or before pregnancy does not substantially increase a woman's risk of having a spontaneous preterm birth, having a baby who is small for gestational age, or having a stillbirth. FUNDING Australian National Health and Medical Research Council.
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Affiliation(s)
- Joanne Reekie
- The Kirby Institute, University of New South Wales Sydney, Sydney, NSW, Australia
| | - Christine Roberts
- Kolling Institute of Medical Research, University of Sydney, Sydney, NSW, Australia
| | - David Preen
- Centre for Health Services Research, University of Western Australia, Perth, WA, Australia
| | - Jane S Hocking
- School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Basil Donovan
- The Kirby Institute, University of New South Wales Sydney, Sydney, NSW, Australia; Sydney Sexual Health Centre, Sydney Hospital, Sydney, NSW, Australia
| | - James Ward
- Department of Infection and Immunity, South Australian Health and Medical Research Institute, Flinders University, Adelaide, SA, Australia
| | - Donna B Mak
- School of Medicine, The University of Notre Dame, Fremantle, WA, Australia
| | - Bette Liu
- School of Public Health and Community Medicine, University of New South Wales Sydney, Sydney, NSW, Australia.
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18
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Population-Based Study of Prediagnostic Antibodies to Chlamydia trachomatis in Relation to Adverse Pregnancy Outcome. Sex Transm Dis 2017; 43:382-7. [PMID: 27196260 DOI: 10.1097/olq.0000000000000432] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Chlamydia trachomatis infection is one of the most common sexually transmitted reported bacterial infections worldwide. The well-known sequelae of chlamydial infection include pelvic inflammatory disease and tubal factor infertility, but the evidence linking C. trachomatis infection and adverse pregnancy outcome is inconsistent and has been largely based on case-control studies with limited study populations. We evaluated this link in a population-based longitudinal biobank health registry setting. METHODS The association between C. trachomatis major outer membrane protein (MOMP) peptide-specific IgG antibodies and ectopic pregnancy, miscarriage, and preterm delivery was examined in a prospective case-control study nested in the Finnish Maternity Cohort. Ectopic pregnancy and miscarriage cases were identified through the Hospital Discharge Register 1998-2005; cases with preterm deliveries were identified through the Finnish Medical Birth register 1988-2005. Control samples were retrieved from the Finnish Maternity Cohort serum bank. A total of 800 cases of ectopic pregnancy, 800 cases of miscarriage, and 1350 cases of preterm birth were included. Equal number of pregnant women without the outcome diagnosis served as controls. The cases and controls were matched by sampling time, at the serum sampling and postal code district. RESULTS Antichlamydial IgG antibodies were associated with ectopic pregnancy. Positive antibody levels were found in 21.0% of cases and 14.6% of controls (P = 0.001; odds ratio, 1.56; 95% confidence interval, 1.20-2.03). Previous exposure to C. trachomatis, as indicated by serum antibodies, doubled the risk of ectopic pregnancy within age and was highest among women 35 years or older. Antichlamydial IgG antibody rates between the cases with miscarriage (16.3% in cases vs. 16.8% in controls) or preterm delivery (18.1% vs. 18.1%) and controls did not differ. CONCLUSIONS Our findings confirm the association between previous exposure to C. trachomatis and ectopic pregnancy. We found no association between C. trachomatis seropositivity and miscarriage or preterm birth.
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Nascimento-Carvalho CM, Xavier-Souza G, Vilas-Boas AL, Fontoura MSH, Barral A, Puolakkainen M, Ruuskanen O. Evolution of acute infection with atypical bacteria in a prospective cohort of children with community-acquired pneumonia receiving amoxicillin. J Antimicrob Chemother 2017; 72:2378-2384. [DOI: 10.1093/jac/dkx126] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 03/30/2017] [Indexed: 01/13/2023] Open
Affiliation(s)
| | - Gabriel Xavier-Souza
- Department of Paediatrics, Federal University of Bahia School of Medicine, Salvador, Brazil
| | - Ana-Luisa Vilas-Boas
- Department of Paediatrics, Federal University of Bahia School of Medicine, Salvador, Brazil
| | | | - Aldina Barral
- Department of Pathology, Federal University of Bahia School of Medicine and Centro de Pesquisa Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Mirja Puolakkainen
- Virology, University of Helsinki and University Central Hospital, Helsinki, Finland
| | - Olli Ruuskanen
- Department of Paediatrics, University of Turku, Turku, Finland
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20
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Offorjebe OA, Wynn A, Moshashane N, Joseph Davey D, Arena K, Ramogola-Masire D, Gaolebale P, Morroni C, Klausner JD. Partner notification and treatment for sexually transmitted infections among pregnant women in Gaborone, Botswana. Int J STD AIDS 2017; 28:1184-1189. [PMID: 28166698 DOI: 10.1177/0956462417692455] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and Trichomonas vaginalis (TV) are sexually transmitted infections (STIs) associated with adverse birth outcomes. Untreated partners contribute to high rates of STI reinfection; thus, partner notification and treatment remain important components of STI care and control. A prospective cohort study was conducted among 300 pregnant women presenting to the antenatal clinic at Princess Marina Hospital in Gaborone, Botswana who enrolled in an STI screening study. Following informed consent and sample collection for CT/NG/TV testing, participants were asked if they were willing to disclose their STI result and to deliver medications to their partner(s). Those who tested positive were asked at a follow-up appointment if they notified their partners. Among the 300 participants, 294 (98%) said they would be willing to tell their partner(s) about their test results if they tested positive, and 284 (95%) said they would be willing to give their partner(s) medication if the option was available. Of those who tested positive and returned for a test of cure, 27 of 32 (84%) reported that they told their partner about the results, and 20 of 32 (63%) reported that their partner received treatment. Almost all pregnant women reported willingness to tell their partner the STI test result and give their partner medications. At test of cure, most women reported informing their partner, although actual treatment receipt was lower. Our findings suggest that pregnant women are willing to utilize patient-based partner notification, but actual partner treatment might be lower than intended.
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Affiliation(s)
- Ogechukwu A Offorjebe
- 1 David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,2 Charles R. Drew University of Medicine and Science, Los Angeles, CA, USA
| | - Adriane Wynn
- 3 UCLA Fielding School of Public Health, Los Angeles, CA, USA
| | | | - Dvora Joseph Davey
- 5 Centre for Infectious Disease Epidemiology and Research, University of Cape Town, South Africa
| | - Kaitlin Arena
- 1 David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Doreen Ramogola-Masire
- 4 University of Botswana, Gaborone, Botswana.,6 Department of Medicine, Botswana-University of Pennsylvania Partnership, Gaborone, Botswana
| | | | - Chelsea Morroni
- 4 University of Botswana, Gaborone, Botswana.,6 Department of Medicine, Botswana-University of Pennsylvania Partnership, Gaborone, Botswana.,8 Wits Reproductive Health and HIV Institute (WRHI), University of the Witwatersrand, Johannesburg, South Africa.,9 EGA Institute for Women's Health/Institute for Global Health, University College London, London, UK
| | - Jeffrey D Klausner
- 1 David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,3 UCLA Fielding School of Public Health, Los Angeles, CA, USA
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Antibody to Chlamydia trachomatis proteins, TroA and HtrA, as a biomarker for Chlamydia trachomatis infection. Eur J Clin Microbiol Infect Dis 2016; 36:49-56. [PMID: 27638011 DOI: 10.1007/s10096-016-2769-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 08/23/2016] [Indexed: 10/21/2022]
Abstract
We studied whether antibody to two chlamydial proteins (TroA and HtrA) could be used as biomarkers of Chlamydia trachomatis infection. METHODS Recombinant proteins C. trachomatis TroA and HtrA were used as antigens in enzyme immunoassay (EIA). Both IgG and IgA antibody responses were studied. RESULTS IgG or IgA antibody to either protein was infrequently detected in sera from healthy blood donors or virgin girls. Patients attending the STI Clinic and patients with perihepatitis had often IgG antibody against TroA (25 and 50 % respectively) and HtrA (21 and 38 % respectively). Especially in sera from patients with chlamydial perihepatitis, the A450nm values with TroA were high (mean 1.591). A positive correlation between C. trachomatis MIF antibody and TroA (r = 0.7) as well as HtrA (r = 0.5) antibody was observed in sera from STI clinic patients and perihepatitis patients. Individuals with C. trachomatis infection and positive serology already when seeking medical attention had higher A450nm values for TroA (0.638) and HtrA (0.836) than patients with no marker of previous exposure or with no infection (0.208 and 0.234 respectively). Diagnosis of genital C. trachomatis infection is often NAAT-based, whereas serology has little value in testing for uncomplicated genital C. trachomatis infection. TroA and HtrA antibodies are potential biomarkers for evaluation of ascending and repeated C. trachomatis infection.
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Adachi K, Nielsen-Saines K, Klausner JD. Chlamydia trachomatis Infection in Pregnancy: The Global Challenge of Preventing Adverse Pregnancy and Infant Outcomes in Sub-Saharan Africa and Asia. BIOMED RESEARCH INTERNATIONAL 2016; 2016:9315757. [PMID: 27144177 PMCID: PMC4837252 DOI: 10.1155/2016/9315757] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 02/09/2016] [Indexed: 12/28/2022]
Abstract
Screening and treatment of sexually transmitted infections (STIs) in pregnancy represents an overlooked opportunity to improve the health outcomes of women and infants worldwide. Although Chlamydia trachomatis is the most common treatable bacterial STI, few countries have routine pregnancy screening and treatment programs. We reviewed the current literature surrounding Chlamydia trachomatis in pregnancy, particularly focusing on countries in sub-Saharan Africa and Asia. We discuss possible chlamydial adverse pregnancy and infant health outcomes (miscarriage, stillbirth, ectopic pregnancy, preterm birth, neonatal conjunctivitis, neonatal pneumonia, and other potential effects including HIV perinatal transmission) and review studies of chlamydial screening and treatment in pregnancy, while simultaneously highlighting research from resource-limited countries in sub-Saharan Africa and Asia.
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Affiliation(s)
- Kristina Adachi
- Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA 90024, USA
| | - Karin Nielsen-Saines
- Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA 90024, USA
| | - Jeffrey D. Klausner
- Department of Medicine, Division of Infectious Diseases: Global Health, David Geffen School of Medicine, UCLA, Los Angeles, CA 90024, USA
- Department of Epidemiology, Jonathan and Karin Fielding School of Public Health, UCLA, Los Angeles, CA 90024, USA
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Acceptability and Feasibility of Sexually Transmitted Infection Testing and Treatment among Pregnant Women in Gaborone, Botswana, 2015. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1251238. [PMID: 27119076 PMCID: PMC4826911 DOI: 10.1155/2016/1251238] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 01/18/2016] [Indexed: 11/26/2022]
Abstract
Introduction. Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and Trichomonas vaginalis (TV) are curable sexually transmitted infections (STIs) that can cause adverse maternal and birth outcomes. Most countries do not conduct routine testing during antenatal care. We present data on the acceptability and feasibility of testing and treating pregnant women for STIs in an antenatal clinic in Gaborone, Botswana. Materials and Methods. We offered CT, NG, and TV testing using self-collected vaginal swabs to eligible pregnant women. Participants received same-day test results. Those who tested positive were given treatment. Results. Among the 225 women who were eligible and recruited, 200 (89%) agreed to participate. The median age of our study sample was 30 years; most were unmarried (77%), with a median gestational age of 27 weeks and a 23% HIV prevalence. All participants received their results with at least 72% (n = 143) on the same day. Thirty participants (15%) tested positive for an STI, all were treated, and 24 (80%) were treated on the same day. Conclusion. The acceptability of STI testing was high, and the intervention was feasible. This study provides support for continued research into STI prevalence, cost-effectiveness, and the association of STIs with adverse maternal and infant outcomes.
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Schmidt R, Muniz RR, Cola E, Stauffert D, Silveira MF, Miranda AE. Maternal Chlamydia trachomatis Infections and Preterm Births in a University Hospital in Vitoria, Brazil. PLoS One 2015; 10:e0141367. [PMID: 26505892 PMCID: PMC4624773 DOI: 10.1371/journal.pone.0141367] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 10/06/2015] [Indexed: 11/19/2022] Open
Abstract
Background Preterm birth (PTB) is a major determinant of neonatal morbimortality with adverse consequences for health. The causes are multifactorial, with intrauterine infection probably explaining most of these outcomes. It is believed that infection with Chlamydia trachomatis (CT) is also involved in PTB and premature rupture of membranes. Objetives To evaluate the prevalence of and associated factors for CT among cases of PTB attended at a University Hospital in Vitoria, Brazil. Methods A cross-sectional study performed among parturient who had preterm birth from June 2012 to August 2013 in Vitoria, Brazil. Participants answered a questionnaire including demographic, behavioral, and clinical data. A sample of urine was collected and screened for CT using polymerase chain reaction. Chi-square tests were used for proportion differences and Student’s-t tests and variance analysis were used for testing differences between mean values. Odds ratio was used as a measure of association with a 95% confidence interval. Results The prevalence of PTB during the period of the study was 26% and the prevalence of CT among them was 13.9%. A total of 31.6% pregnant women were younger than 25 years old and women infected by CT were even younger than women not infected by CT (p = 0.022). Most of them (76.2%) were married or had a living partner, and CT infection was more frequent among the single ones (p = 0.018); 16.7% of women reported their first sexual intercourse under 14 years old. The causes of prematurity were maternal-fetal in 40.9%; rupture of the membranes in 29.7% and premature labor in 29.4%. In multivariate analysis, being married was a protective factor for infection [OR = 0.48 (95%CI:0.24–0.97)]. None of the other characteristics were associated with CT infection. Conclusions This study shows a high prevalence of CT infection among parturient who have preterm birth. This high prevalence highlight the need for defining screening strategies focused on young pregnant women in Brazil.
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Affiliation(s)
- Renylena Schmidt
- Programa de Pós-Graduação em Doenças Infecciosas, Universidade Federal do Espirito Santo, Vitoria, Brasil
| | - Renan Rosetti Muniz
- Programa de Pós-Graduação em Doenças Infecciosas, Universidade Federal do Espirito Santo, Vitoria, Brasil
| | - Elizandra Cola
- Programa de Pós-Graduação em Doenças Infecciosas, Universidade Federal do Espirito Santo, Vitoria, Brasil
| | - Dulce Stauffert
- Departamento Materno Infantil, Faculdade de Medicina, Universidade Federal de Pelotas, Pelotas, Brasil
| | | | - Angelica E. Miranda
- Programa de Pós-Graduação em Doenças Infecciosas, Universidade Federal do Espirito Santo, Vitoria, Brasil
- * E-mail:
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Cheslack-Postava K, Brown AS, Chudal R, Suominen A, Huttunen J, Surcel HM, Sourander A. Maternal exposure to sexually transmitted infections and schizophrenia among offspring. Schizophr Res 2015; 166:255-60. [PMID: 26022653 PMCID: PMC4512848 DOI: 10.1016/j.schres.2015.05.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 05/01/2015] [Accepted: 05/04/2015] [Indexed: 01/13/2023]
Abstract
Animal models and epidemiologic studies suggest that prenatal maternal infection, and sexually transmitted infection (STI) in particular, is associated with an increased risk of schizophrenia in the offspring. However, findings from prior research studies on common infections, including herpes simplex virus type 2 (HSV-2) and Chlamydia trachomatis (C. trachomatis) have been inconsistent. To investigate these associations, we conducted a case-control study nested in the population-based Finnish Prenatal Study of Schizophrenia. Using linked national registries, 963 cases with schizophrenia (ICD-10 F20) or schizoaffective disorder (ICD-10 F25), and 963 matched controls were identified from among all persons born between 1983 and 1998 in Finland. HSV-2 IgG antibody levels were quantified in archived maternal serum samples drawn during pregnancy. Mothers of 16.4% of cases versus 12.6% of controls were HSV-2 seropositive. Mean levels of maternal HSV-2 IgG were marginally higher among cases than controls (index values of 0.98 versus 0.86; p=0.06). The unadjusted odds ratio (OR) of maternal HSV-2 IgG seropositivity was 1.33 (95% confidence interval (CI)=1.03-1.72, p=0.03). Following adjustment for covariates, the relationship was attenuated (OR=1.22, CI=0.93-1.60; p=0.14). In an exploratory analysis of another STI, C. trachomatis antibodies were measured in a subsample of 207 case-control pairs drawn from the cohort. The proportions of subjects that were seropositive and the mean levels of C. trachomatis antibodies were similar for cases and controls. This study does not support a strong association of HSV-2 or C. trachomatis IgG antibodies in maternal serum during early to mid-gestation with the development of schizophrenia in the offspring.
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Affiliation(s)
- Keely Cheslack-Postava
- Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York State Psychiatric Institute, 1051 Riverside Drive, New York, NY 10032, United States
| | - Alan S. Brown
- Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York State Psychiatric Institute, 1051 Riverside Drive, New York, NY 10032, United States
,Department of Epidemiology, Columbia University Mailman School of Public Health, 722 West 168 Street, New York, NY 10032, United States
| | - Roshan Chudal
- Department of Child Psychiatry, Faculty of Medicine, University of Turku, Turku Finland
| | - Auli Suominen
- Department of Child Psychiatry, Faculty of Medicine, University of Turku, Turku Finland
| | - Jukka Huttunen
- Department of Child Psychiatry, Faculty of Medicine, University of Turku, Turku Finland
| | | | - Andre Sourander
- Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York State Psychiatric Institute, 1051 Riverside Drive, New York, NY 10032, United States
,Department of Child Psychiatry, Faculty of Medicine, University of Turku, Turku Finland
,Department of Child Psychiatry, Turku University Hospital, Turku Finland
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Blackwell C. The Role of Infection and Inflammation in Stillbirths: Parallels with SIDS? Front Immunol 2015; 6:248. [PMID: 26106385 PMCID: PMC4460799 DOI: 10.3389/fimmu.2015.00248] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 05/07/2015] [Indexed: 11/13/2022] Open
Abstract
It has been suggested that stillbirths are part of the spectrum of infant deaths that includes sudden infant death syndrome (SIDS). This paper examines the hypothesis that risk factors associated with stillbirths might contribute to dysregulation of inflammatory responses to infections that could trigger the physiological responses leading to fetal loss. These include genetic factors (ethnic group, sex), environmental (infection, cigarette smoke, obesity), and developmental (testosterone levels) factors. Interactions between the genetic, environmental, and developmental risk factors are also considered, e.g., the excess of male stillborn infants in relation to the effects of testosterone levels during development on pro-inflammatory responses. In contrast to SIDS, inflammatory responses of both mother and fetus need to be considered. Approaches for examining the hypothesis are proposed.
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Affiliation(s)
- Caroline Blackwell
- School of Biomedical Sciences, Faculty of Health and Medicine, University of Newcastle , Newcastle, NSW , Australia ; Information Based Medicine, Hunter Medical Research Institute , New Lambton, NSW , Australia
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Nilsson MF, Webster WS. Effects of Macrolide Antibiotics on Rat Embryonic Heart Function In Vitro. ACTA ACUST UNITED AC 2014; 101:189-98. [DOI: 10.1002/bdrb.21107] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/15/2014] [Accepted: 02/16/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Mats F. Nilsson
- Drug Safety and Toxicology; Department of Pharmaceutical Biosciences; Uppsala University; Uppsala Sweden
| | - William S. Webster
- Drug Safety and Toxicology; Department of Pharmaceutical Biosciences; Uppsala University; Uppsala Sweden
- Department of Anatomy and Histology; School of Medical Sciences; University of Sydney; Sydney Australia
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Welte R, Jager H, Postma MJ. Cost-effectiveness of screening for genital Chlamydia trachomatis. Expert Rev Pharmacoecon Outcomes Res 2014; 1:145-56. [DOI: 10.1586/14737167.1.2.145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Darville T. Recognition and Treatment of Chlamydial Infections from Birth to Adolescence. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 764:109-22. [DOI: 10.1007/978-1-4614-4726-9_8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Chlamydia trachomatis genotypes and the Swedish new variant among urogenital Chlamydia trachomatis strains in Finland. Infect Dis Obstet Gynecol 2011; 2011:481890. [PMID: 21747641 PMCID: PMC3124027 DOI: 10.1155/2011/481890] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 02/15/2011] [Accepted: 03/03/2011] [Indexed: 01/06/2023] Open
Abstract
Our aims were to genotype Chlamydia trachomatis strains present in urogenital samples and to investigate the occurrence of the Swedish new variant of C. trachomatis in Finland. We genotyped 160 C. trachomatis positive samples with ompA real-time PCR and analyzed 495 samples for the new variant. The three most prevalent genotypes were E (40%), F (28%), and G (13%). Only two specimens containing bacteria with the variant plasmid were detected. It seems that in Finland the percentage of infections due to genotypes F and G has slightly increased during the last 20 years. Genotypes E and G appear to be more common, and genotypes J/Ja and I/Ia appear to be less common in Europe than in the USA. Although the genotype E was the most common genotype among C. trachomatis strains, the new variant was rarely found in Finland.
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Rours GIJG, Duijts L, Moll HA, Arends LR, de Groot R, Jaddoe VW, Hofman A, Steegers EAP, Mackenbach JP, Ott A, Willemse HFM, van der Zwaan EAE, Verkooijen RP, Verbrugh HA. Chlamydia trachomatis infection during pregnancy associated with preterm delivery: a population-based prospective cohort study. Eur J Epidemiol 2011; 26:493-502. [PMID: 21538042 PMCID: PMC3115062 DOI: 10.1007/s10654-011-9586-1] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Accepted: 04/15/2011] [Indexed: 11/26/2022]
Abstract
Chlamydia trachomatis infection is the most prevalent bacterial sexually transmitted infection and may influence pregnancy outcome. This study was conducted to assess the effect of chlamydial infection during pregnancy on premature delivery and birthweight. Pregnant women attending a participating midwifery practice or antenatal clinic between February 2003 and January 2005 were eligible for the study. From 4,055 women self-administered questionnaires and urine samples, tested by PCR, were analysed for C. trachomatis infection. Pregnancy outcomes were obtained from midwives and hospital registries. Gestational ages and birthweights were analysed for 3,913 newborns. The C. trachomatis prevalence was 3.9%, but varied by age and socio-economic background. Chlamydial infection was, after adjustment for potential confounders, associated with preterm delivery before 32 weeks (OR 4.35 [95% CI 1.3, 15.2]) and 35 weeks gestation (OR 2.66 [95% CI 1.1, 6.5]), but not with low birthweight. Of all deliveries before 32 weeks and 35 weeks gestation 14.9% [95% CI 4.5, 39.5] and 7.4% [95% CI 2.5, 20.1] was attributable to C. trachomatis infection. Chlamydia trachomatis infection contributes significantly to early premature delivery and should be considered a public health problem, especially in young women and others at increased risk of C. trachomatis infection.
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Affiliation(s)
- G Ingrid J G Rours
- The Generation R Study group, Erasmus University Medical Centre, Rotterdam, The Netherlands.
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Rours GIJG, de Krijger RR, Ott A, Willemse HFM, de Groot R, Zimmermann LJI, Kornelisse RF, Verbrugh HA, Verkooijen RP. Chlamydia trachomatis and placental inflammation in early preterm delivery. Eur J Epidemiol 2011; 26:421-8. [PMID: 21431838 PMCID: PMC3109244 DOI: 10.1007/s10654-011-9569-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Accepted: 03/09/2011] [Indexed: 11/09/2022]
Abstract
Chlamydiatrachomatis may infect the placenta and subsequently lead to preterm delivery. Our aim was to evaluate the relationship between the presence of Chlamydiatrachomatis and signs of placental inflammation in women who delivered at 32 weeks gestation or less. Setting: placental histology and clinical data were prospectively obtained from 304 women and newborns at the Erasmus MC-Sophia, Rotterdam, the Netherlands. C.trachomatis testing of placentas was done retrospectively using PCR. C.trachomatis was detected in 76 (25%) placentas. Histological evidence of placental inflammation was present in 123 (40%) placentas: in 41/76 (54%) placentas with C.trachomatis versus 82/228 (36%) placentas without C.trachomatis infection (OR 2.1, 95% CI 1.2–3.5). C.trachomatis infection correlated with the progression (P = 0.009) and intensity (P = 0.007) of materno-fetal placental inflammation. C.trachomatis DNA was frequently detected in the placenta of women with early preterm delivery, and was associated with histopathological signs of placental inflammation.
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Affiliation(s)
- G Ingrid J G Rours
- Department of Paediatric Infectious Disease and Immunology, Erasmus MC, Rotterdam, The Netherlands.
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Prevalence and Risk Factors of Chlamydia trachomatis Cervicitis in Pregnant Women at the Genital Tract Infection in Obstetrics Unit Care at Botucatu Medical School, São Paulo State University - UNESP, Brazil. J Low Genit Tract Dis 2011; 15:20-4. [DOI: 10.1097/lgt.0b013e3181ed3d58] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Carter TC, Olney RS, Mitchell AA, Romitti PA, Bell EM, Druschel CM. Maternal self-reported genital tract infections during pregnancy and the risk of selected birth defects. ACTA ACUST UNITED AC 2010; 91:108-16. [PMID: 21319278 DOI: 10.1002/bdra.20749] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 08/31/2010] [Accepted: 09/14/2010] [Indexed: 11/12/2022]
Abstract
BACKGROUND Genital tract infections are common during pregnancy and can result in adverse outcomes including preterm birth and neonatal infection. This hypothesis-generating study examined whether these infections are associated with selected birth defects. METHODS We conducted a case-control study of 5913 children identified as controls and 12,158 cases with birth defects from the National Birth Defects Prevention Study (1997-2004). Maternal interviews provided data on genital tract infections that occurred from one month before pregnancy through the end of the first trimester. Infections were either grouped together as a single overall exposure or were considered as a subgroup that included chlamydia/gonorrhea/pelvic inflammatory disease. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using unconditional logistic regression with adjustment for potential confounders. RESULTS Genital tract infections were associated with bilateral renal agenesis/hypoplasia (OR, 2.89; 95% CI, 1.11-7.50), cleft lip with or without cleft palate (OR, 1.46; 95% CI, 1.03-2.06), and transverse limb deficiency (OR, 1.84; 95% CI, 1.04-3.26). Chlamydia/gonorrhea/pelvic inflammatory disease was associated with cleft lip only (OR, 2.81; 95% CI, 1.39-5.69). These findings were not statistically significant after adjustment for multiple comparisons. CONCLUSIONS Caution is needed in interpreting these findings due to the possible misclassification of infection, the limited sample size that constrained consideration of the effects of treatment, and the possibility of chance associations. Although these data do not provide strong evidence for an association between genital tract infections and birth defects, additional research on the possible effects of these relatively common infections is needed.
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Affiliation(s)
- Tonia C Carter
- Division of Epidemiology, Statistics, and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health/DHHS, 6100 Executive Blvd., Bethesda, MD 20892, USA.
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Emerging role of Chlamydia and Chlamydia-like organisms in adverse pregnancy outcomes. Curr Opin Infect Dis 2008; 21:70-6. [PMID: 18192789 DOI: 10.1097/qco.0b013e3282f3e6a5] [Citation(s) in RCA: 162] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF THE REVIEW This review considers the roles of Chlamydia spp. and newly identified Chlamydia-like organisms in miscarriage, stillbirths and preterm labour in both animals and humans. RECENT FINDINGS The cause of miscarriage, stillbirth and preterm labour often remains unexplained. Intracellular bacteria that grow either poorly or not at all on media used routinely to detect human pathogens could be the aetiological agents of these obstetrical conditions. There is growing evidence that Chlamydia trachomatis, Chlamydophila abortus, Chlamydophila psittaci and Chlamydophila pneumoniae infections may result in adverse pregnancy outcomes in humans and/or animals. Waddlia, a Chlamydia-like organism first isolated from an aborted bovine, has emerged as an agent of abortion in cattle. Recently, Waddlia was also implicated in human foetal death. Moreover, Parachlamydia acanthamoebae is also abortigenic in ruminants. Whether additional novel Chlamydia-like organisms, such as Protochlamydia amoebophila, Neochlamydia hartmanellae, Criblamydia sequanensis, Rhabdochlamydia crassificans and Simkania negevensis, are involved in foetal loss or premature delivery remains to be determined. SUMMARY This review provides an update on the consequences of chlamydial infection during pregnancy and summarizes current evidence suggesting that some Chlamydia-related organisms are probably emerging obstetrical pathogens.
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Tikkanen M, Surcel HM, Bloigu A, Nuutila M, Hiilesmaa V, Ylikorkala O, Paavonen J. Prediction of placental abruption by testing for C-reactive protein and chlamydial antibody levels in early pregnancy. BJOG 2008; 115:486-91. [DOI: 10.1111/j.1471-0528.2007.01663.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Blas MM, Canchihuaman FA, Alva IE, Hawes SE. Pregnancy outcomes in women infected with Chlamydia trachomatis: a population-based cohort study in Washington State. Sex Transm Infect 2007; 83:314-8. [PMID: 17344249 PMCID: PMC2598687 DOI: 10.1136/sti.2006.022665] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES To measure the risk of preterm delivery, premature rupture of membranes, infant low birth weight and infant mortality, by a population-based retrospective cohort study using Washington State birth certificate data. METHODS All women diagnosed with Chlamydia trachomatis infection (n = 851), noted with a check box on the birth certificate from 2003, and a randomly selected sample of women not diagnosed with C trachomatis (n = 3404) were identified. To assess the RR between chlamydia infection and pregnancy outcomes, multivariable logistic regression analysis was used. RESULTS Women with chlamydia infection were younger, more likely to be non-white and had less years of education compared with women without chlamydia. Additionally, they were more likely to have inadequate prenatal care and coinfections with other sexually transmitted infections. After adjusting for age and education, chlamydia-infected women were at an increased risk of preterm delivery (RR 1.46, 95% CI 1.08 to 1.99) and premature rupture of membranes (RR 1.50, 95% CI 1.03 to 2.17) compared with non-infected women. However, no increased risk of infant death (RR 1.02, 95% CI 0.37 to 2.80) or low birth weight (RR 1.12, 95% CI 0.74 to 1.68) associated with chlamydia infection was observed. CONCLUSION This study suggests that C trachomatis is associated with an increased risk of preterm delivery and premature rupture of membranes, but not with infant death and low birth weight. Routine screening and opportune treatment for C trachomatis should be considered a necessary part of prenatal care to reduce these adverse pregnancy outcomes.
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Affiliation(s)
- Magaly M Blas
- Department of Epidemiology,School of Public Health and Community Medicine, University of Washington, Seattle, WA 98103, USA
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Chlamydia and mycoplasma infections during pregnancy and their relationships to orofacial cleft. Biologia (Bratisl) 2006. [DOI: 10.2478/s11756-006-0147-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rours GIJG, Verkooyen RP, Willemse HFM, van der Zwaan EAE, van Belkum A, de Groot R, Verbrugh HA, Ossewaarde JM. Use of pooled urine samples and automated DNA isolation to achieve improved sensitivity and cost-effectiveness of large-scale testing for Chlamydia trachomatis in pregnant women. J Clin Microbiol 2005; 43:4684-90. [PMID: 16145127 PMCID: PMC1234100 DOI: 10.1128/jcm.43.9.4684-4690.2005] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The success of large-scale screening for Chlamydia trachomatis depends on the availability of noninvasive samples, low costs, and high-quality testing. To evaluate C. trachomatis testing with pregnant women, first-void urine specimens from 750 consecutive asymptomatic pregnant women from the Rotterdam area (The Netherlands) were collected. Initially, we investigated the performance of three different DNA isolation methods with 350 of these urines and 70 pools of 5 of the same subset of urine samples. The routinely used COBAS AMPLICOR test was compared to the COBAS AMPLICOR test with prior DNA isolation by use of the MagNA Pure large-volume kit and the MagNA Pure bacterial DNA isolation kit. The latter combination provided the best DNA test for pooled urines, with a sensitivity twice that of the other methods. Next, using all 750 urines, the COBAS AMPLICOR performance for individual testing was compared to pooled testing with the standard COBAS AMPLICOR procedure and subsequently to pooled testing with COBAS AMPLICOR in combination with the MagNA Pure bacterial DNA isolation kit. The sensitivity of COBAS AMPLICOR was 65% on individual and 42% on pooled urines but improved to 92% on pooled urines with the MagNA Pure bacterial DNA isolation kit, making this combination the best screening method. The C. trachomatis prevalence in this population appeared to be 6.4%. Additionally, the cost of the combined MagNA Pure bacterial DNA isolation kit and COBAS AMPLICOR method on pooled urines was only 56% of the cost of the standard COBAS AMPLICOR test applied to individual urines. Costs per positive case detected in the combined method were 39% of standard costs.
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Affiliation(s)
- G I J G Rours
- Department of Paediatrics, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands.
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Karinen L, Pouta A, Bloigu A, Koskela P, Paldanius M, Leinonen M, Saikku P, Jêrvelin MR, Hartikainen AL. Serum C-reactive protein and Chlamydia trachomatis antibodies in preterm delivery. Obstet Gynecol 2005; 106:73-80. [PMID: 15994620 DOI: 10.1097/01.aog.0000164464.11979.5d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To assess the association between Chlamydia trachomatis antibodies, antibodies to C trachomatis heat shock proteins 60 and 10, and C-reactive protein (CRP) levels in maternal serum measured by highly sensitive CRP assay during the first trimester and spontaneous preterm delivery before 37 weeks of gestation. METHODS This was a nested case-control study of 104 spontaneous preterm singleton deliveries (cases) and 402 term singleton deliveries, as controls, of mothers belonging to the population-based Northern Finland 1966 Birth Cohort. Data on 2,309 first deliveries were available from the Finnish Medical Birth Register. Serum C trachomatis and C pneumoniae antibodies were measured by the microimmunofluorescence test and chlamydial heat shock proteins 60 and 10 antibodies by enzyme immunoassay using recombinant proteins as antigens, and highly sensitive CRP levels were quantified with highly sensitive immunoenzymometric assay. RESULTS Highly sensitive CRP levels were higher and C trachomatis immunoglobulin G levels (pools and individual serotypes) were more often present (thought not nominally significantly in all cases) in the women with preterm compared with term deliveries. Elevated immunoglobulin G levels of C trachomatis antibodies or elevated highly sensitive CRP levels alone, however, did not increase the estimated risk for preterm delivery, but when they were present simultaneously, the estimated risk for preterm delivery was 4-fold (odds ratio 4.3, 95% confidence interval 2.0-9.3). Among the women delivered at or before 34 weeks of gestation, the estimated risk was even more evident (odds ratio 5.6, 95% confidence interval 2.1-14.5). The preterm delivery rate was 26.5% for those with C trachomatis antibodies and 18.8% for those without C trachomatis antibodies. CONCLUSION The results of the present study suggest that chlamydial infection in the first trimester is associated with preterm delivery. LEVEL OF EVIDENCE II-2.
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Affiliation(s)
- Liisa Karinen
- Department of Obstetrics and Gynecology, University Hospital of Oulu, Finland.
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Hamdad F, Orfila J, Boulanger JC, Eb F. [Chlamydia trachomatis urogenital infections in women. Best diagnostic approaches]. ACTA ACUST UNITED AC 2005; 32:1064-74. [PMID: 15589784 DOI: 10.1016/j.gyobfe.2004.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2004] [Accepted: 10/05/2004] [Indexed: 10/26/2022]
Abstract
Chlamydiae are obligate intracellular bacteria. Chlamydia trachomatis is the most common sexually transmitted disease (STD). The C. trachomatis damaging disease sequelae such as sterility is based on intense and chronic inflammation elicited and maintained by reinfection or persistent infection. The high prevalence of C. trachomatis infection reflects the long and successful adaptation of these organisms to persist in their human host population. The large group of asymptomatically infected persons is not only at risk of serious long-term sequelae but also sustains transmission within communities. C. trachomatis acute infections have been diagnosed by cell culture, direct immunofluorescence, enzyme immunoassay, direct DNA hybridization, and more recently by nucleic acid amplification tests (NAATs). In chronic or persistent chlamydial infections, the level of Chlamydia is very low and bacteria are often not viable. Such infections would be characterized by continuing positive NAATs but only intermittent isolation of viable Chlamydia and positive assays for chlamydial protein antigen. The development of NAATs has been a major advance in the field of chlamydial diagnosis. The use of NAATs associated with serology test is the best diagnosis. The introduction of assays based on amplification of genetic material has subsequently increased the sensitivity of detecting chlamydial infections and offers the opportunity to use non-invasive sampling techniques to screen for infections in asymptomatic subjects. In this article, it was proposed the best diagnosis approaches for detection of acute and chronic infections.
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Affiliation(s)
- F Hamdad
- Laboratoire de bactériologie-hygiène, CHU d'Amiens, place Victor-Pauchet, 80054 Amiens cedex 1, France.
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Hiltunen-Back E, Haikala O, Kautiainen H, Ruutu P, Paavonen J, Reunala T. Nationwide Increase of Chlamydia trachomatis Infection in Finland. Sex Transm Dis 2003; 30:737-41. [PMID: 14520170 DOI: 10.1097/01.olq.0000086606.77125.66] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Since 1995, the incidence of Chlamydia trachomatis infection has been increasing in Finland, although there have been no major changes in public sexually transmitted disease (STD) services or screening practice. OBJECTIVES The objective was to study whether the change in C. trachomatis incidence is significant and to identify specific risk groups. METHODS The incidence rates for all C. trachomatis cases notified by laboratories to the National Infectious Disease Register (NIDR) in Finland in 1995-2000 were calculated by gender, age, and domicile. Data from a sentinel STD surveillance network was used to analyze changes of risk-taking behavior in age groups with the highest C. trachomatis rates. RESULTS During the 6-year study period, laboratory surveillance data documented an increase in the incidence rate from 23.4 per 10,000 to 29.2 per 10,000. The increase was most evident among people living in nonurban densely populated areas. Highest increase, 1.37-fold (95% confidence interval [CI], 1.29-1.46) in women and 1.69-fold (CI, 1.47-1.92) in men, occurred in the youngest age group (10-19 years old). In 2000, more women, but not men, in the age group of 10-29 years reported 5 or more annual sex partners (18.8%; CI, 16.3-21.6) than in 1995 (8.3%; CI, 5.7-11.5). CONCLUSION National surveillance of C. trachomatis infection based on laboratory notification documented increasing incidence rates, especially among adolescents and young people. This risk group should be a target for screening and educational programs to control the epidemic of C. trachomatis infections.
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Affiliation(s)
- Eija Hiltunen-Back
- Department of Dermatology and Venereology, Helsinki University Hospital, Helsinki, Finland.
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Gaydos CA, Howell MR, Quinn TC, McKee KT, Gaydos JC. Sustained high prevalence of Chlamydia trachomatis infections in female army recruits. Sex Transm Dis 2003; 30:539-44. [PMID: 12838080 DOI: 10.1097/00007435-200307000-00002] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Chlamydia trachomatis infections are prevalent among young sexually active females, have serious sequelae, and are mostly asymptomatic. Screening and treatment of infected females has been demonstrated to prevent sequelae such as pelvic inflammatory disease. GOAL To assess prevalence and risk factors for chlamydia infection in US Army female recruits, whether these changed over time, and to examine variables contributing to any observed patterns. STUDY DESIGN Prevalence study of 23,010 non-healthcare-seeking female Army recruits enrolled in a chlamydia screening program at Fort Jackson, SC, from January 1996 through June 1999. Each of the 4-year cohorts was examined separately for prevalence and risk factors. MAIN OUTCOME MEASURES Urine-based testing for C trachomatis by ligase chain reaction was used to determine prevalence, and questionnaires were used to collect demographic and risk information. State home of record for each recruit was transformed into Public Health reporting region: West, Midwest, South, Northeast, and Territories. RESULTS Prevalence for all years was 9.51%, but a progressive increase from 8.51% to 9.92% occurred over the course of study (P=0.018). The proportion of individuals reporting specific risk factors during the 90 days preceding the study generally decreased over time. In a regression model, significant risk factors for infection included black race, age 25 years or younger, home-of-record from the South, being screened during years 3 and 4 of the study, more than one sex partner, a new sex partner, and history of any sexually transmitted disease. Condom use was protective. In another model controlling for age and home-of-record from the South, being screened in years 2, 3, and 4 of the study were significantly predictive for being chlamydia positive. CONCLUSION A high and slightly increasing prevalence of C trachomatis infection was observed among young females entering the military over 4 consecutive years. Young age, black race, home-of-record from the South, more than one sex partner, a new sex partner, condom use, and a history of having a sexually transmitted disease were correlates of chlamydia infection. Sustained high rates of C trachomatis infection in this population provide clear justification for a chlamydia control program for young women entering the Army consisting of screening at entry on the basis of age and possibly home-of-record together with continued periodic rescreening. SUMMARY A study of 23,010 female Army recruits demonstrated that a high prevalence of C trachomatis was sustained during 4 years of observation. Year of study, young age, and being from the South were significant predictors of infection.
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Affiliation(s)
- Charlotte A Gaydos
- Infectious Disease Division, The Johns Hopkins University, Baltimore, Maryland 21205, USA.
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Mårdh PA. Influence of infection with Chlamydia trachomatis on pregnancy outcome, infant health and life-long sequelae in infected offspring. Best Pract Res Clin Obstet Gynaecol 2002; 16:847-64. [PMID: 12473286 DOI: 10.1053/beog.2002.0329] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This chapter deals with genital chlamydial infections in pregnancy and postpartum. There is increasing evidence that Chlamydia trachomatis infection may result in a number of adverse pregnancy outcomes, including early and late abortion, intrauterine infections of the fetus, stillbirth, prematurity, premature rupture of the membranes (PROM) and postpartum endometritis. Ectopic pregnancy is commonly associated with a previous tubal chlamydial infection where immunological reactions seem to play a role. C. trachomatis infection may be acquired as an intrauterine infection, as well as during transit through the birth channel, and this may result in neonatal conjunctivitis and/or pneumonia. The role of chlamydial infection in the sudden death syndrome has also been considered, but evidence so far is minimal. Neonatal chlamydial infection may cause life-long sequelae, such as obstructive lung disease. Genital chlamydial infections have been associated with problems in insemination and attempts at in vitro fertilization. The chapter also deals with screening of pregnant women for C. trachomatis and the treatment of infected mothers and their offspring.
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Affiliation(s)
- Per-Anders Mårdh
- Department of Obstetrics and Gynecology, Lund University, Lund, Sweden
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Mårdh PA. Is the prevention of genital chlamydial infections by community involvement possible? Best Pract Res Clin Obstet Gynaecol 2002; 16:829-46. [PMID: 12473285 DOI: 10.1053/beog.2002.0335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This chapter presents different means by which community initiatives have been undertaken to reduce the prevalence and incidence of genital and allied infections caused by Chlamydia trachomatis. As most of these infections in the majority of infected individuals do not produce symptoms that are likely to urge them to attend any health care unit, screening programmes are mandatory to be able to influence the epidemic of infections with this agent. In many societies there has been a skewed gender distribution in the number of chlamydia-positive persons; this probably indicates that diagnostic service activities have been directed more against one gender than the other. The important role of partner notification, as in the case of other sexually transmitted infections, has been documented. Different means of community initiative have included counselling of school children and groups of persons more likely to be infected. Counselling by the pharmacy has an important role in many societies. Selected cohorts have been offered - via the mass media, Internet, radio and television programmes - sampling kits which can be mailed to a laboratory for testing. The establishment of youth clinics has been found effective for detecting teenagers harbouring C. trachomatis, similarly to screening at antenatal clinics. The offer of free consultations, aetiological tests and therapy has been a part of community initiatives, mimicking the services offered for some of the classic sexually transmitted infections. This chapter considers the usefulness of different test methods and stresses the need to retest those found to be positive. Barriers to the successful introduction of screening activities and diagnostic services are also considered.
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Affiliation(s)
- Per-Anders Mårdh
- Department of Obstetrics and Gynecology, Lund University, Lund, Sweden
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Pitkäranta A, Vaheri A, Penttilä T, Puolakkainen M. No evidence of acute Chlamydia pneumoniae infection in patients with Bell's palsy. Otolaryngol Head Neck Surg 2002; 126:415-6. [PMID: 11997783 DOI: 10.1067/mhn.2002.124187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The cause of Bell's palsy remains unknown even though available evidence suggests that infection could be a factor. In recent studies, Chlamydia pneumoniae has been associated with neurologic diseases such as multiple sclerosis. In the present study, the association of C pneumoniae with Bell's palsy was studied with the use of serology and polymerase chain reaction to test tear fluid and peripheral blood mononuclear cells from 21 patients with Bell's palsy and 21 control subjects. C pneumoniae DNA was detected from tear fluid samples in 1 patient with Bell's palsy and in 2 healthy control subjects. Whether this indicates earlier disease or subclinical infection remains to be studied. However, an association between Bell's palsy and acute C pneumoniae infection could not be shown.
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Affiliation(s)
- Anne Pitkäranta
- Department of Otorhinolaryngology, Haartman Institute and Helsinki University Central Hospital, Finland.
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