Compartmental analysis of proteomic biomarkers during intra-uterine infections

子宫内感染期间蛋白质组生物标志物的区室分析

• 批准号: 7871391
• 负责人: Peta Louise Grigsby
• 金额: $ 24.65万
• 依托单位: OREGON HEALTH & SCIENCE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-06-13 至 2012-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7871391
• 关键词: ANXA2 gene; Amniotic Fluid; Anti-Inflammatory Agents; Anti-inflammatory; Antibiotic Therapy; Antibiotics; Arteries; Azithromycin; Bacterial Vaginosis; Biological Markers; Blood; Blood Circulation; Blood flow; Calgranulin B; Cardiac; Cardiac Output; Cardiovascular system; Cervical; Cesarean section; Characteristics; Clinical; Color; Complement; Control Animal; Data; Decidua; Depressed mood; Descending aorta; Dexamethasone; Diagnosis; Dinoprostone; Disease Progression; Doppler Ultrasonography; Ductus Arteriosus; Effectiveness; Endocrine; Experimental Models; Fetal Monitoring; Fetal Tissues; Functional disorder; Gelatinase B; Genital system; Gestational Age; Health; Heating; IL8 gene; Image; In Vitro; Individual; Indomethacin; Infection; Inferior vena cava structure; Inflammation Mediators; Inflammatory Response; Insulin-Like Growth-Factor Binding Protein 1; Interleukin-6; Invaded; Length; Leukocytes; Link; Matrix Metalloproteinases; Measurement; Membrane; Modeling; Molecular Profiling; Monitor; Monkeys; Mycoplasma; Myocardial; Neonatal; Palpation; Performance; Physiological Adaptation; Plasma; Premature Birth; Premature Labor; Production; Proteomics; Pulmonary valve structure; Research Proposals; Role; Series; Simulate; Source; Staging; Structure of ductus venosus; Structure of umbilical artery; Therapeutic; Therapeutic Intervention; Tissues; Ultrasonography; Ultrasonography, Doppler, Pulsed; Ureaplasma; Ureaplasma urealyticum biovar 1; amnion; amniotic cavity; aortic valve; comparative; cytokine; fetal; fetal blood; genital infection; hemodynamics; in vivo; indexing; intraamniotic infection; killings; microbial; novel; novel strategies; premature; prevent; progesterone 11-hemisuccinate-(2-iodohistamine); prognostic indicator; respiratory; response; uterine contractility; vaginal fluid

The objectives of this research proposal are to characterize the mechanistic and temporal relationships among biomarker expression profiles (e.g., IGFBP-1 proteolytic fragments, calgranulin B and annexin II) in maternal and fetal compartments during defined stages of ascending infection with genital mycoplasmas (from choriodecidual to intra-amniotic models). It is our hypothesis that spatial and temporal characteristics of specific proteomic biomarkers in cervical vaginal fluid (CVF), amniotic fluid, maternal and fetal blood, will act as surrogates for the stage of progression of intra-uterine infection; similarly, changes in biomarker expression profiles during maternal therapeutic interventions (antibiotic and anti-inflammatory agents), will serve as prognostic indicators. Fetal physiological adaptations (i.e., cardiovascular hemodynamics, respiratory parameters,endocrine status) will be assessed in early and advanced stages of infection, and in response to maternal antibiotic therapy. Complemetary in vitro studies will assess the ability of U. parvum to invade and transcytose through intact chorioamniotic membranes and gain entry into the amniotic cavity. The production rates of specific biomarkers and the secretory profiles of IL-1B, TNF-a, IL-6 and IL-8 by component tissue layers will illuminate the tissue source of specific biomarker profiles observed in the amniotic fluid and cervical vaginal fluid (CVF) during intra-uterine infection. Moreover, these studies will provide important information on the contribution of the amnion or choriodecidua to the inflammatory response following U. parvum exposure. A number of specific endpoints will be ascertained that will aid in our understanding of causal links among choriodecidual colonization with U. parvum and the biologic and clinical manifestations of early and late stages of ascending uterine infection. Uterine contractility, serial assesment of cervical length (by ultrasound and palpation), amniotic fluid levels of PGE2, PGF2a, cytokines, leukocytes and MMPs will be correlated with biomarker expression profiles in the CVF, amniotic fluid and maternal and fetal blood. Quantitative cultures and PCR for ureaplasmas will be performed on amniotic fluid, blood and fetal tissues.

本研究计划的目的是表征生物标志物表达谱（例如，IGFBP-1蛋白水解片段，钙粒蛋白B和膜联蛋白II）在生殖支原体（从绒毛膜到羊膜内模型）上升感染的特定阶段在母体和胎儿室中的机制和时间关系。我们的假设是，宫颈阴道液（CVF）、羊水、母体和胎儿血液中特定蛋白质组生物标志物的时空特征将作为子宫内感染进展阶段的替代指标；同样，在母体治疗干预（抗生素和抗炎剂）期间生物标志物表达谱的变化将作为预后指标。将在感染的早期和晚期以及对母体抗生素治疗的反应中评估胎儿的生理适应（即心血管血流动力学、呼吸参数、内分泌状况）。补充的体外研究将评估幼球菌侵入和通过完整的绒毛膜羊膜并进入羊膜腔的能力。