Fetal Diagnosis and Therapy最新文献

{"title":"Increased Risk of Persistent Pulmonary Hypertension of the Newborn in Twin Anaemia Polycythaemia Sequence Donors.","authors":"Margot J A van de Sande, Femke Slaghekke, Arjan B Te Pas, Ruben S G M Witlox, Enrico Lopriore, Lisanne S A Tollenaar","doi":"10.1159/000542493","DOIUrl":"10.1159/000542493","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to describe the prevalence and risk factors for respiratory complications in monochorionic twins with twin anaemia polycythaemia sequence (TAPS).</p><p><strong>Methods: </strong>All neonates diagnosed with postnatal TAPS at our center between 2002 and 2023 were included in this retrospective study. The primary outcome was the prevalence of respiratory complications, including respiratory distress syndrome (RDS), bronchopulmonary dysplasia (BPD), and persistent pulmonary hypertension of the newborn (PPHN). Secondary outcomes included need of respiratory support during admission and a risk factor analysis for adverse respiratory outcome.</p><p><strong>Results: </strong>In our study of 100 postnatally diagnosed TAPS pregnancies, 32% (62/199) experienced RDS and 13% (25/199) had BPD, with no difference between donors and recipients. PPHN occurred in 7% of cases, more frequently in donors (11%, 11/100) than in recipients (3%, 3/100) (OR = 1.3, 95% CI: 0.2-2.6). Lower gestational age at birth and severe foetal anaemia were found to be significant independent risk factors associated with PPHN in TAPS twins (OR = 0.3, 95% CI: 0.1-0.5), respectively (OR = 1.9, 95% CI: 0.8-3.1).</p><p><strong>Conclusion: </strong>TAPS donor twins have a fourfold increased risk of PPHN due to anaemia compared to recipient twins. Given the life-threatening nature of PPHN, TAPS twins should be born in hospitals equipped to treat it.</p>","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":" ","pages":"1-10"},"PeriodicalIF":1.6,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142617774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cord Occlusion in Twin Reversed Arterial Perfusion Sequence: A Retrospective Study of Laser Photocoagulation versus Radiofrequency Ablation.","authors":"Emi J Komatsu, Catherine Hamzeh, Grace Hamadeh, Arlyn Llanes, Lisa M Korst, Ramen H Chmait","doi":"10.1159/000542494","DOIUrl":"10.1159/000542494","url":null,"abstract":"<p><strong>Introduction: </strong>Twin reversed arterial perfusion (TRAP) sequence is a rare condition complicating monozygotic multiple gestations. Prenatal management via umbilical cord occlusion (UCO) of the anomalous twin has been shown to improve pump twin survival. We compared outcomes of gestations with high-risk TRAP sequence treated with mid-trimester UCO using laser photocoagulation versus radiofrequency ablation (RFA).</p><p><strong>Methods: </strong>This is a retrospective, single-center, cohort study of all patients with high-risk TRAP sequence who underwent UCO from 2006-2023. High-risk criteria were defined as follows: larger abdominal circumference of the anomalous twin, polyhydramnios, critically abnormal Doppler waveforms in the pump twin, hydrops in the pump twin, and/or monoamniotic twins. The primary outcome was 30-day survival of the pump twin.</p><p><strong>Results: </strong>The 74 patients were divided equally between the laser and RFA groups. For the 2 groups, mean gestational age (GA) at UCO (20.5 ± 2.3 vs. 20.7 ± 3.1 weeks, p = 0.987) and mean GA at delivery (35.2 ± 4.6 vs. 34.5 ± 5.7 weeks, p = 0.812) were similar. The 30-day neonatal survival rate did not differ (91.9% [34/37] vs. 89.2% [33/37], OR: 1.37 [0.29-6.61], p = 0.692).</p><p><strong>Conclusion: </strong>No difference in 30-day neonatal survival was identified in patients with high-risk TRAP sequence who underwent mid-trimester UCO by laser versus RFA.</p>","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":" ","pages":"1-8"},"PeriodicalIF":1.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142603074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Added Value in Low-Risk Pregnancies of Longitudinal Changes in Uterine Doppler and Circulating Angiogenic Factors during the Third Trimester in Predicting Term Preeclampsia.","authors":"Lucie Roubalova, Vladimira Kroutilova, Maria Fernanda Lopez-G Tinajero, Judit Martinez-Egea, Claudia Pumarola, Francesc Figueras, Marek Lubusky","doi":"10.1159/000541731","DOIUrl":"10.1159/000541731","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this study was to assess the relationship between longitudinal changes in the uterine Doppler velocimetry and the maternal profile of angiogenic factors in the third trimester and to assess their ability to predict term preeclampsia (PE).</p><p><strong>Methods: </strong>A cohort of low-risk pregnant women was scheduled for a uterine Doppler evaluation and measurement of the circulating levels of angiogenic factors at ∼30 and ∼36 weeks. The performance of both parameters and their change over time in predicting term PE was evaluated.</p><p><strong>Results: </strong>A total of 1,191 women were analyzed, of which 28 (2.4%) women developed term PE. At ∼30 weeks, a model including the sFlt-1/PlGF (fms-like tyrosine kinase-1/placental growth factor) ratio and the uterine Doppler explained 16.2% of the uncertainty of developing term PE, while at ∼36 weeks, the same variables explained 25.2% [p < 0.001]. The longitudinal changes of both predictors had an R2 of 26.8%, which was not different from that of the ∼36 weeks evaluation [p = 0.45]. The area under the curve (AUC) of the ∼36 weeks ratio was significantly higher than at ∼30 weeks (0.86 [0.77-0.94] vs. 0.81 [0.73-0.9]; p = 0.043). The AUC of the longitudinal change of the ratio (0.85 [0.77-0.94]) did not differ from that of at ∼36 weeks (p = 0.82). At ∼36 weeks, for a 10% of false positives, the ratio had a detection rate of 71.4%.</p><p><strong>Conclusion: </strong>A cross-sectional measurement of the sFlt-1/PlGF ratio outperforms uterine Doppler in predicting term PE. The combination of both markers does not improve such prediction, nor the evaluation of the longitudinal changes between weeks.</p>","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":" ","pages":"1-10"},"PeriodicalIF":1.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142575593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sequence of Events Leading to Medical Abortion for Fetal Indications after 34 Weeks' Gestation: 23 Years of Experience in a Single Medical Center.","authors":"Marina Pekar Zlotin, Yael Nehama Berman, Yaacovone Melcer, Howard Cuckle, Ron Maymon","doi":"10.1159/000540674","DOIUrl":"10.1159/000540674","url":null,"abstract":"<p><strong>Introduction: </strong>Technical advances are rapidly improving the ability to detect anatomical malformations and genetic abnormalities during pregnancy. We aimed to identify the sequence of events leading to medical abortion ≥34 weeks' gestation, to determine whether the procedure could have been carried out earlier.</p><p><strong>Method: </strong>Retrospective study of medical abortions in singleton pregnancies carried out in our department over a 23-year period from 1998 to 2021.</p><p><strong>Results: </strong>36/4,055 (0.88%) abortions were carried out ≥34 weeks' gestation. The indications were anatomical in 20 (55%), chromosomal or genetic in 14 (39%) and CMV infection in two. Evaluation of the sequence of events suggests that an earlier diagnosis would have been unfeasible before the third trimester in 18 cases (50%) because the disorder was developmental and ultrasound findings would not have presented earlier. By contrast, certain other cases might have been diagnosed earlier if the patient had not delayed routine screening or if screening had been administered on schedule.</p><p><strong>Conclusion: </strong>In this series, full adherence to local screening tests and protocols, and timely decision-making could have substantially reduced the late abortion rate by as much as half.</p>","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142575598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Postnatal Outcomes of Fetal Variants of Unknown Significance in Prenatal Chromosomal Microarray Analysis: A Single-Center Study.","authors":"Lizhong Yin, Jing Wang, Bin Zhang, Wenli Wang, Bin Yu","doi":"10.1159/000542147","DOIUrl":"10.1159/000542147","url":null,"abstract":"<p><strong>Introduction: </strong>Chromosomal microarray analysis (CMA) can identify clinically significant microdeletions and microduplications, providing valuable insights into the genetic basis of various disorders. Our study was to evaluate clinical management and prognosis of fetuses with prenatal variants of unknown significance (VOUS) and determine diagnostic approaches for subsequent pregnancies.</p><p><strong>Methods: </strong>This study included 2,953 fetuses undergoing CMA at the Prenatal Diagnostic Center of Changzhou Maternal and Child Health Care Hospital from January 2018 to December 2022, identifying 162 cases with VOUS. Parent-of-origin testing determined the origin of copy number variations. Prenatal genetic counseling was provided, and outcomes were followed for 3-36 months post-birth.</p><p><strong>Results: </strong>All 162 VOUS cases received prenatal genetic counseling. Among these, 123 continued the pregnancy; 22 chose termination, and 17 were lost to follow-up. Of the continuations, 116 delivered at term and 7 preterm. Post-birth follow-up showed 5/123 live-born fetuses developed relevant clinical phenotypes. Parent-of-origin testing in 21 cases identified 18 hereditary and 3 de novo variants. Additionally, five subsequent pregnancies were monitored, with two undergoing amniocentesis and three receiving low-risk noninvasive prenatal testing, all with positive outcomes.</p><p><strong>Conclusion: </strong>VOUS, occurring in approximately 5% of cases, require comprehensive prenatal genetic counseling and show generally favorable outcomes. Despite low association with adverse clinical phenotypes, the importance of postnatal follow-up and regular report updates is emphasized to detect potential clinical associations early.</p>","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":" ","pages":"1-8"},"PeriodicalIF":1.6,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142461402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utility of 3-Dimensional Modeling in Prenatally Diagnosed Large Fetal Neck Mass.","authors":"Devashish S Joshi, Michael A Stellon, Michael D Puricelli, Michael J Beninati, Sylvana Garcia-Rodriguez, Casey Winchester, Teresa Chapman, Inna N Lobeck","doi":"10.1159/000541950","DOIUrl":"10.1159/000541950","url":null,"abstract":"<p><strong>Introduction: </strong>Prenatally diagnosed large fetal neck mass requires multidisciplinary consultation and evaluation of perinatal treatment options. The decision to perform ex utero intrapartum treatment (EXIT) is based on risk-benefit assessment for both the infant and mother. Though fetal ultrasound and MRI assist with operative planning, a three-dimensional anatomic model offers improved anatomic visualization and prenatal patient counseling.</p><p><strong>Case presentation: </strong>Multiple surveillance ultrasound exams between gestational weeks 16 and 32 plus fetal MRI at 29/3 weeks were performed for fetal evaluation. A 3-dimensional model was printed (Form 3 and 3L, clear resin, Formlabs) incorporating fetal MRI (Ax SSFSE TE 100 DL and Cor SSFSE Brain DL) and using Mimics Medical and 3-matic Medical software (Materialise). A left fetal multicystic neck mass measuring 2.1 × 1.8 × 1.5 cm was diagnosed at 16/6 weeks gestation in a G8P2416. Fetal MRI performed at 29/3 weeks showed a large exophytic mixed solid-cystic cervicofacial mass, 10.3 × 9.4 × 10.6 cm arising from the left mandible, concerning for a teratoma. Prior to delivery, the model was used to educate and counsel the family regarding the complex clinical situation and the reasoning for delivery via EXIT followed by mass resection. Additionally, the model demonstrated tracheal narrowing and oropharyngeal compression, supporting airway intervention planning. The fetus was delivered at 32/3 weeks via EXIT to intubation using rigid bronchoscopy. Duration of time on placental support was 12 min. On day of life 5, the patient underwent resection of the cervical mass. Pathology revealed an immature teratoma, histologic grade 3 without yolk sac elements, and negative regional lymph nodes.</p><p><strong>Conclusion: </strong>Three-dimensional fetal modeling facilitates perinatal airway needs assessment, patient counseling, delivery, and postnatal management.</p>","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":" ","pages":"1-6"},"PeriodicalIF":1.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142399860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Clinical Outcomes Data Archive for a Comprehensive Fetal Diagnosis and Treatment Center.","authors":"Thomas A Reynolds, Matthew A Goldshore, Sabrina Flohr, Sierra Land, Leny Mathew, Juliana S Gebb, Edward R Oliver, Natalie E Rintoul, Anne M Ades, Elizabeth E Foglia, Catherine M Avitabile, Howard B Panitch, Gregory G Heuer, Lori J Howell, N Scott Adzick, Holly L Hedrick","doi":"10.1159/000541877","DOIUrl":"10.1159/000541877","url":null,"abstract":"<p><strong>Introduction: </strong>Data on near- and long-term clinical outcomes are critical for the care of all maternal-fetal patients presenting to a fetal center. This is especially important since physiologic and neurodevelopmental attributes do not manifest until later childhood when multilevel (e.g., individual, family, policy) factors have a direct influence on health outcomes. Electronic health records (EHRs) create opportunity for efficient data collection. However, documentation structures are not designed for acquisition of key attributes, and changes over time and between-clinician differences can affect resultant output. Therefore, EHR derived datasets have limited ability to accurately characterize the clinical presentation and care trajectory of patients with congenital anomalies. In addition, in most systems, the fetus lacks a digital identity and requires relinking fetal attributes documented in the maternal chart to those from the pediatric EHR. This conundrum amplifies in the setting of multiple gestation, returning maternal patients, and pregnancies with fetal demise. Moreover, current data capture systems result in incomplete abstraction of variables that may confound, mediate, or moderate critical associations. Our objective was to develop and implement a prospective data capture platform to transform EHR data into an analytic-grade database for multipurpose use.</p><p><strong>Methods: </strong>A unified platform for longitudinal follow-up of maternal-child dyads cared for at our fetal center, named the Clinical Outcomes Data Archive (CODA), was constructed. CODA was designed using a data dictionary based on multidisciplinary and interprofessional expert input, a relational identity for each patient, fetus, and pregnancy, and a process by which EHR-sourced and chart-abstracted data are validated by a well-trained team. Descriptive analyses were performed for data acquired between July 2022 and July 2023, and a comparison of studies before and after implementation of CODA is presented.</p><p><strong>Conclusion: </strong>5,394,106 data points were validated for 7,662 patients across 12 conditions. 2% of data points were found to be unreliable or undocumented. 91% of data points were sourced from the EHR. Eighty-five percent of condition-specific variables required manual chart abstraction. The study conducted with CODA was able to contribute to 18 other studies. CODA successfully merges EHR-sourced and manually abstracted documentation for longitudinal study of the maternal-child dyad.</p>","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142389216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Callosal Injuries in Cytomegalovirus Fetopathy: A Neurosonographic Study.","authors":"Karina Krajden Haratz, Gustavo Malinger, Hadas Miremberg, Joseph Hartoov, Igal Wolman, Ariel Jaffa, Michael Busilov, Roee Birnbaum","doi":"10.1159/000541794","DOIUrl":"10.1159/000541794","url":null,"abstract":"<p><strong>Introduction: </strong>Among the fetal brain anomalies described in cases of congenital infection, callosal insults are rarely cited in medical literature. The aim of this study was to describe the rate and pattern of callosal injury in cytomegalovirus (CMV) fetopathy.</p><p><strong>Methods: </strong>This retrospective study included fetuses with confirmed CMV-PCR, assessed in a single center. Demographic data including maternal seroconversion info were collected. Dedicated US including neurosonography was performed, with high frequency probes, using TV route whenever feasible. Fetal brain biometry including callosal length and the corpus callosum (CC)/OFD ratio was performed. Length below the 5th centile or morphological abnormalities were considered abnormal. Brain and body morphology were thoroughly assessed, and any abnormal finding reported.</p><p><strong>Results: </strong>Seventy-two patients were included in our cohort. In 76% infection occurred in the 1st T or periconceptional. In 12 patients, the exact time of infection was inconclusive, including two cases of secondary infection. In 34.7%, a callosal anomaly was observed and it was never isolated. CNS abnormalities included: periventricular hyperechogenicity (PVHE) 55.5%, calcifications 52%, ventriculomegaly 33%, periventricular pseudocysts 31.4%, occipital cysts 22.2%, echogenic ganglionic eminence 30.5%, lentostriatal vasculopathy 26.4%, sulcation abnormalities 22.2%, cerebellar findings 18% and HC below -2 SD 18%. In 19 cases, the CC was short with calcifications in four. In one case, the insult was severe and in another the CC was absent. The most common association with CC insult was PVHE (56%) and calcifications (52%).</p><p><strong>Conclusion: </strong>Although not referred as a classic brain structure affected by CMV infection, the CC was injured in one-third of our patients, including cases of late infection. The mechanism of disease and the prenatal patterns of callosal involvement in these cases appear to be different from the postnatal patterns and are not reversible. The presence of a callosal injury would imply a worse prognosis and significant increment to the risk of neurodevelopmental impairment.</p>","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":" ","pages":"1-11"},"PeriodicalIF":1.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prenatal Diagnosis of Anomalous Origin of the Left Pulmonary Artery in Fetus with a Right-Sided Aortic Arch - Case Report and Review of the Literature.","authors":"Laura Szlang,Rabih Chaoui,Bernd Opgen-Rhein,Mi-Young Cho,Wolfgang Henrich","doi":"10.1159/000541432","DOIUrl":"https://doi.org/10.1159/000541432","url":null,"abstract":"Introduction Anomalous origin of the left pulmonary artery (AOLPA) is an exceptionally rare congenital malformation, requiring particular care to be detected during fetal echocardiography. Case presentation A 30-year-old woman, gravida 1, para 0, was referred for a mid-trimester anomaly scan. The three-vessel tracheal view in fetal echocardiographic examination led to the prenatal detection of an anomalous origin of the left pulmonary artery in the presence of a right-sided aortic arch. Additionally, a bilateral arterial duct and the ductal origin of the left pulmonary artery (LPA) were detected postnatally. Prenatal diagnosis enabled the scheduling of the delivery in a tertiary perinatal center, immediate postnatal treatment with prostaglandin E1 to avoid obstruction of the isolated LPA as well as surgical repair of the anomaly. Conclusion The rareness of the disease led to only sporadically published cases of prenatal diagnosis of AOLPA. However, early detection makes prenatal diagnosis crucial regarding the infants' outcome. This case report underlines the importance of a meticulous examination of the bifurcation of the pulmonary trunk during fetal echocardiography.","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":"208 1","pages":"1-19"},"PeriodicalIF":2.2,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transamniotic Fetal Immunotherapy (TRAFIT) with Secretory IgA: A Potential Novel Ancillary Strategy for the Prevention of Necrotizing Enterocolitis.","authors":"Ashlyn E Whitlock,Kamila Moskowitzova,Ina Kycia,Jeffrey Nelson,David Zurakowski,Dario O Fauza","doi":"10.1159/000541434","DOIUrl":"https://doi.org/10.1159/000541434","url":null,"abstract":"INTRODUCTIONSecretory immunoglobulin-A (SIgA), which is not produced perinatally, binds bacteria enhancing mucosal immunity. Higher levels of intestinal bacteria bound by SIgA are protective against necrotizing enterocolitis. Transamniotic fetal immunotherapy (TRAFIT) has previously been used to deliver SIgA to the fetal digestive tract, however with unclear functional impact. We sought to determine whether SIgA administered via TRAFIT could functionally bind intestinal bacteria postnatally.METHODSFetuses (n=38) from four dams underwent intra-amniotic injections of human SIgA on gestational-day 19 (E19; term=E22-E23). After spontaneous delivery, pups were survived for 1-2 days postnatally before intestinal contents were procured and submitted to flow cytometry. Specimens were stained for bacteria (Syto-GFP) and human-SIgA (PE) to prevent cross-reactivity with maternal rat SIgA.RESULTSOverall survival was 94.7% (36/38). SIgA-bacterial complexes were identified in all samples at all time points showing significantly higher positive PE events than unstained controls (p=0.03-0.05). The proportion of bacteria bound by IgA decreased daily, from 45.6% to 29.9% bound at 4 to 6 days post-TRAFIT, respectively (overall p=0.05).CONCLUSIONSTransamniotic fetal immunotherapy with secretory-IgA leads to functionally IgA-bound bacteria into the postnatal period and may be a novel strategy for enhancing early mucosal immunity, potentially protecting the neonate against necrotizing enterocolitis.","PeriodicalId":12189,"journal":{"name":"Fetal Diagnosis and Therapy","volume":"30 1","pages":"1-17"},"PeriodicalIF":2.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}