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Wild KT, Rintoul NE, Hedrick HL. The importance of ongoing follow-up for the developmental consequences of fetal therapies. THE LANCET. CHILD & ADOLESCENT HEALTH 2024:S2352-4642(24)00161-5. [PMID: 38914092 DOI: 10.1016/s2352-4642(24)00161-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 06/26/2024]
Affiliation(s)
- K Taylor Wild
- Division of Neonatology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, 19104 PA, USA; Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, 19104 PA, USA.
| | - Natalie E Rintoul
- Division of Neonatology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, 19104 PA, USA; Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, 19104 PA, USA
| | - Holly L Hedrick
- Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, 19104 PA, USA; Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, 19104 PA, USA
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Miyake Y, Tse WH, Wang JQ, Patel D, Ozturk A, Yamataka A, Keijzer R. Microinjection With Nanoparticles to Deliver Drugs in Prenatal Lung Explants - A Pilot Study for Prenatal Therapy in Congenital Diaphragmatic Hernia. J Pediatr Surg 2024; 59:847-853. [PMID: 38413261 DOI: 10.1016/j.jpedsurg.2024.01.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 01/22/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND Fetoscopic endoluminal tracheal occlusion (FETO) improves the survival rate in fetuses with severe congenital diaphragmatic hernia (CDH). We hypothesize that prenatal therapies into the trachea during FETO can further improve outcomes. Here, we present an ex vivo microinjection technique with rat lung explants to study prenatal therapy with nanoparticles. METHODS We used microsurgery to isolate lungs from rats on embryonic day 18. We injected chitosan nanoparticles loaded with fluorescein (FITC) into the trachea of the lung explants. We compared the difference in biodistribution of two types of nanoparticles, functionalized IgG-conjugated nanoparticles (IgG-nanoparticles) and bare nanoparticles after 24 h culture with immunofluorescence (IF). We used IF to mark lung epithelial cells with E-cadherin and to investigate an apoptosis (Active-caspase 3) and inflammatory marker (Interleukin, IL-6) and compared its abundance between the two experimental groups and control lung explants. RESULTS We detected the presence of nanoparticles in the lung explants, and the relative number of nanoparticles to cells was 2.49 fold higher in IgG-nanoparticles than bare nanoparticles (p < 0.001). Active caspase-3 protein abundance was similar in the control, bare nanoparticles (1.20 fold higher), and IgG-nanoparticles (1.34 fold higher) groups (p = 0.34). Similarly, IL-6 protein abundance was not different in the control, bare nanoparticles (1.13 fold higher), and IgG-nanoparticles (1.12 fold higher) groups (p = 0.33). CONCLUSIONS Functionalized nanoparticles had a higher presence in lung cells and this did not result in more apoptosis or inflammation. Our proof-of-principle study will guide future research with therapies to improve lung development prenatally. LEVELS OF EVIDENCE N/A TYPE OF STUDY: Animal and laboratory study.
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Affiliation(s)
- Yuichiro Miyake
- Division of Pediatric Surgery, Department of Surgery, University of Manitoba and Children's Hospital Research Institute of Manitoba, Winnipeg, Canada; Juntendo University School of Medicine, Department of Pediatric General and Urogenital Surgery, Tokyo, Japan
| | - Wai Hei Tse
- Division of Pediatric Surgery, Department of Surgery, University of Manitoba and Children's Hospital Research Institute of Manitoba, Winnipeg, Canada
| | - Jia Qi Wang
- Division of Pediatric Surgery, Department of Surgery, University of Manitoba and Children's Hospital Research Institute of Manitoba, Winnipeg, Canada
| | - Daywin Patel
- Division of Pediatric Surgery, Department of Surgery, University of Manitoba and Children's Hospital Research Institute of Manitoba, Winnipeg, Canada
| | - Arzu Ozturk
- Division of Pediatric Surgery, Department of Surgery, University of Manitoba and Children's Hospital Research Institute of Manitoba, Winnipeg, Canada
| | - Atsuyuki Yamataka
- Juntendo University School of Medicine, Department of Pediatric General and Urogenital Surgery, Tokyo, Japan
| | - Richard Keijzer
- Division of Pediatric Surgery, Department of Surgery, University of Manitoba and Children's Hospital Research Institute of Manitoba, Winnipeg, Canada.
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Bergh E, Baschat AA, Cortes MS, Hedrick HL, Ryan G, Lim FY, Zaretsky MV, Schenone MH, Crombleholme TM, Ruano R, Gosnell KA, Johnson A. Fetoscopic Endoluminal Tracheal Occlusion for Severe, Left-Sided Congenital Diaphragmatic Hernia: The North American Fetal Therapy Network Fetoscopic Endoluminal Tracheal Occlusion Consortium Experience. Obstet Gynecol 2024; 143:440-448. [PMID: 38128107 PMCID: PMC10863657 DOI: 10.1097/aog.0000000000005491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/01/2023] [Accepted: 11/09/2023] [Indexed: 12/23/2023]
Abstract
OBJECTIVE To report the outcomes of fetoscopic endoluminal tracheal occlusion in a multicenter North American cohort of patients with isolated, left-sided congenital diaphragmatic hernia (CDH) and to compare neonatal mortality and morbidity in patients with severe left-sided congenital diaphragmatic hernia who underwent fetoscopic endoluminal tracheal occlusion with those expectantly managed. METHODS We analyzed data from 10 centers in the NAFTNet (North American Fetal Therapy Network) FETO (Fetoscopic Endoluminal Tracheal Occlusion) Consortium registry, collected between November 1, 2008, and December 31, 2020. In addition to reporting procedure-related surgical outcomes of fetoscopic endoluminal tracheal occlusion, we performed a comparative analysis of fetoscopic endoluminal tracheal occlusion compared with contemporaneous expectantly managed patients. RESULTS Fetoscopic endoluminal tracheal occlusion was successfully performed in 87 of 89 patients (97.8%). Six-month survival in patients with severe left-sided congenital diaphragmatic hernia did not differ significantly between patients who underwent fetoscopic endoluminal tracheal occlusion and those managed expectantly (69.8% vs 58.1%, P =.30). Patients who underwent fetoscopic endoluminal tracheal occlusion had higher rates of preterm prelabor rupture of membranes (54.0% vs 14.3%, P <.001), earlier gestational age at delivery (median 35.0 weeks vs 38.3 weeks, P <.001), and lower birth weights (mean 2,487 g vs 2,857 g, P =.001). On subanalysis, in patients for whom all recorded observed-to-expected lung/head ratio measurements were below 25%, patients with fetoscopic endoluminal tracheal occlusion required fewer days of extracorporeal membrane oxygenation (ECMO) (median 9.0 days vs 17.0 days, P =.014). CONCLUSION In this cohort, fetoscopic endoluminal tracheal occlusion was successfully implemented across several North American fetal therapy centers. Although survival was similar among patients undergoing fetoscopic endoluminal tracheal occlusion and those expectantly managed, fetoscopic endoluminal tracheal occlusion in North American centers may reduce morbidity, as suggested by fewer days of ECMO in those patients with persistently reduced lung volumes (observed-to-expected lung/head ratio below 25%).
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Affiliation(s)
- Eric Bergh
- Division of Fetal Intervention, Department of Obstetrics, Gynecology and Reproductive Medicine, UTHealth Houston, the University of Texas McGovern Medical School, and the Fetal Center at Children's Memorial Hermann Hospital, and the Division of Fetal Therapy and Surgery, Department of Obstetrics and Gynecology, Texas Children's Hospital Fetal Center, Baylor College of Medicine, Houston, Texas; the Center for Fetal Therapy, Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, Maryland; The Richard Wood Jr. Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; the Ontario Fetal Centre, Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynaecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada; the Center for Fetal, Cellular & Molecular Therapy, Cincinnati Fetal Center, Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; the Fetal Care Center, Children's Hospital Colorado, Aurora, Colorado; the Division of Maternal and Fetal Medicine, Department of Obstetrics & Gynecology, Mayo Clinic, Rochester, Minnesota; the Fetal Care Center Dallas, Dallas, Texas; and the Fetal Treatment Center, University of California, San Francisco, San Francisco, California
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4
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Moore SS, Keller RL, Altit G. Congenital Diaphragmatic Hernia: Pulmonary Hypertension and Pulmonary Vascular Disease. Clin Perinatol 2024; 51:151-170. [PMID: 38325939 DOI: 10.1016/j.clp.2023.10.001] [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] [Indexed: 02/09/2024]
Abstract
This review provides a comprehensive summary of the current understanding of pulmonary hypertension (PH) in congenital diaphragmatic hernia, outlining the underlying pathophysiologic mechanisms, methods for assessing PH severity, optimal management strategies, and prognostic implications.
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Affiliation(s)
- Shiran S Moore
- Neonatology, Dana Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Weizamann 6, Tel-Aviv, Jaffa 6423906, Israel.
| | - Roberta L Keller
- Neonatology, UCSF Benioff Children's Hospital, 550 16th Street, #5517, San Francisco, CA 94158, USA; Department of Pediatrics, University of California San Francisco, San Francisco, CA, USA
| | - Gabriel Altit
- Neonatology, McGill University Health Centre, Montreal Children's Hospital, 1001 Décarie boulevard, Montreal, H4A Quebec; Department of Pediatrics, McGill University, Montreal, Quebec, Canada
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Yoshida S, Eichelberger O, Ulis M, Kreger AM, Gittes GK, Church JT. Intra-Amniotic Sildenafil and Rosiglitazone Late in Gestation Ameliorate the Pulmonary Hypertension Phenotype in Congenital Diaphragmatic Hernia. J Pediatr Surg 2024:S0022-3468(24)00017-4. [PMID: 38350773 DOI: 10.1016/j.jpedsurg.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 02/15/2024]
Abstract
BACKGROUND Pulmonary hypertension remains difficult to manage in congenital diaphragmatic hernia (CDH). Prenatal therapy may ameliorate postnatal pulmonary hypertension. We hypothesized that intra-amniotic (IA) injection of either sildenafil, a phosphodiesterase 5 inhibitor, or rosiglitazone, a PPAR-γ agonist, or both late in gestation would decrease the detrimental pulmonary vascular remodeling seen in CDH and improve peripheral pulmonary blood flow. METHODS Pregnant rats were gavaged with nitrogen on embryonic day (E) 9.5 to induce fetal CDH. Sildenafil and/or rosiglitazone were administered to each fetus via an intra-amniotic injection after laparotomy on the pregnant dam at E19.5, and fetuses delivered at E21.5. Efficacy measures were gross necropsy, histology, peripheral blood flow assessment using intra-cardiac injection of a vascular tracer after delivery, and protein expression analysis. RESULTS Intra-amniotic injections did not affect fetal survival, the incidence of CDH, or lung weight-to-body weight ratio in CDH fetuses. IA sildenafil injection decreased pulmonary vascular muscularization, and rosiglitazone produced an increase in peripheral pulmonary blood flow distribution. The combination of sildenafil and rosiglitazone decreased pulmonary artery smooth muscle cell proliferation. These intra-amniotic treatments did not show any negative effects in either CDH fetuses or control fetuses. CONCLUSION IA injection of sildenafil and rosiglitazone late in gestation ameliorates the pulmonary hypertensive phenotype of CDH and may have utility in clinical translation. LEVEL OF EVIDENCE Not applicable.
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Affiliation(s)
- Shiho Yoshida
- Division of Pediatric Surgery, Department of Surgery, University of Pittsburgh School of Medicine and UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224-1334, USA; Department of Pediatric General and Urogenital Surgery, Juntendo University, Tokyo, Japan
| | - Olivia Eichelberger
- Division of Pediatric Surgery, Department of Surgery, University of Pittsburgh School of Medicine and UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224-1334, USA
| | - Michael Ulis
- Division of Pediatric Surgery, Department of Surgery, University of Pittsburgh School of Medicine and UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224-1334, USA
| | - Alexander M Kreger
- Division of Pediatric Surgery, Department of Surgery, University of Pittsburgh School of Medicine and UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224-1334, USA
| | - George K Gittes
- Division of Pediatric Surgery, Department of Surgery, University of Pittsburgh School of Medicine and UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224-1334, USA
| | - Joseph T Church
- Division of Pediatric Surgery, Department of Surgery, University of Pittsburgh School of Medicine and UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224-1334, USA; Section of Pediatric Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
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Wild KT, Hedrick HL, Ades AM, Fraga MV, Avitabile CM, Gebb JS, Oliver ER, Coletti K, Kesler EM, Van Hoose KT, Panitch HB, Johng S, Ebbert RP, Herkert LM, Hoffman C, Ruble D, Flohr S, Reynolds T, Duran M, Foster A, Isserman RS, Partridge EA, Rintoul NE. Update on Management and Outcomes of Congenital Diaphragmatic Hernia. J Intensive Care Med 2023:8850666231212874. [PMID: 37933125 DOI: 10.1177/08850666231212874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Infants with congenital diaphragmatic hernia (CDH) benefit from comprehensive multidisciplinary teams that have experience in caring for the unique and complex issues associated with CDH. Despite prenatal referral to specialized high-volume centers, advanced ventilation strategies and pulmonary hypertension management, and extracorporeal membrane oxygenation, mortality and morbidity remain high. These infants have unique and complex issues that begin in fetal and infant life, but persist through adulthood. Here we will review the literature and share our clinical care pathway for neonatal care and follow up. While many advances have occurred in the past few decades, our work is just beginning to continue to improve the mortality, but also importantly the morbidity of CDH.
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Affiliation(s)
- K Taylor Wild
- Division of Neonatology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Holly L Hedrick
- Richard D. Wood Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Anne M Ades
- Division of Neonatology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Maria V Fraga
- Division of Neonatology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Catherine M Avitabile
- Division of Cardiology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Juliana S Gebb
- Richard D. Wood Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Edward R Oliver
- Department of Radiology, Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Kristen Coletti
- Division of Neonatology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Erin M Kesler
- Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - K Taylor Van Hoose
- Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Howard B Panitch
- Division of Pulmonary and Sleep Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Sandy Johng
- Division of Neonatology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Renee P Ebbert
- Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Lisa M Herkert
- Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Casey Hoffman
- Department of Child and Adolescent Psychiatry and Behavioral Sciences, The Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Deanna Ruble
- Richard D. Wood Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Sabrina Flohr
- Richard D. Wood Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Tom Reynolds
- Richard D. Wood Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Melissa Duran
- Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Audrey Foster
- Department of Clinical Nutrition, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Rebecca S Isserman
- Division of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Emily A Partridge
- Richard D. Wood Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
| | - Natalie E Rintoul
- Division of Neonatology, Children's Hospital of Philadelphia, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA, USA
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Ahmad E, Brumfield O, Masse O, Velasco-Annis C, Zhang J, Rollins CK, Connolly S, Barnewolt C, Shamshirsaz AA, Qaderi S, Javinani A, Warfield SK, Yang E, Gholipour A, Feldman HA, Estroff J, Grant PE, Vasung L. Atypical fetal brain development in fetuses with non-syndromic isolated musculoskeletal birth defects (niMSBDs). Cereb Cortex 2023; 33:10793-10801. [PMID: 37697904 PMCID: PMC10629896 DOI: 10.1093/cercor/bhad323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 09/13/2023] Open
Abstract
Non-syndromic, isolated musculoskeletal birth defects (niMSBDs) are among the leading causes of pediatric hospitalization. However, little is known about brain development in niMSBDs. Our study aimed to characterize prenatal brain development in fetuses with niMSBDs and identify altered brain regions compared to controls. We retrospectively analyzed in vivo structural T2-weighted MRIs of 99 fetuses (48 controls and 51 niMSBDs cases). For each group (19-31 and >31 gestational weeks (GW)), we conducted repeated-measures regression analysis with relative regional volume (% brain hemisphere) as a dependent variable (adjusted for age, side, and interactions). Between 19 and 31GW, fetuses with niMSBDs had a significantly (P < 0.001) smaller relative volume of the intermediate zone (-22.9 ± 3.2%) and cerebellum (-16.1 ± 3.5%,) and a larger relative volume of proliferative zones (38.3 ± 7.2%), the ganglionic eminence (34.8 ± 7.3%), and the ventricles (35.8 ± 8.0%). Between 32 and 37 GW, compared to the controls, niMSBDs showed significantly smaller volumes of central regions (-9.1 ± 2.1%) and larger volumes of the cortical plate. Our results suggest there is altered brain development in fetuses with niMSBDs compared to controls (13.1 ± 4.2%). Further basic and translational neuroscience research is needed to better visualize these differences and to characterize the altered development in fetuses with specific niMSBDs.
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Affiliation(s)
- Esha Ahmad
- Division of Newborn Medicine, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Olivia Brumfield
- Division of Newborn Medicine, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Olivia Masse
- Division of Newborn Medicine, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Clemente Velasco-Annis
- Department of Radiology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Jennings Zhang
- Division of Newborn Medicine, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Caitlin K Rollins
- Department of Neurology Medicine, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Susan Connolly
- Department of Radiology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
- Maternal Fetal Care Center, Boston Children’s Hospital, Boston, MA 02115, United States
| | - Carol Barnewolt
- Department of Radiology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
- Maternal Fetal Care Center, Boston Children’s Hospital, Boston, MA 02115, United States
| | - Alireza A Shamshirsaz
- Maternal Fetal Care Center, Boston Children’s Hospital, Boston, MA 02115, United States
| | - Shohra Qaderi
- Maternal Fetal Care Center, Boston Children’s Hospital, Boston, MA 02115, United States
| | - Ali Javinani
- Maternal Fetal Care Center, Boston Children’s Hospital, Boston, MA 02115, United States
| | - Simon K Warfield
- Department of Radiology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Edward Yang
- Department of Radiology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Ali Gholipour
- Department of Radiology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Henry A Feldman
- Institutional Centers for Clinical and Translational Research, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Judy Estroff
- Department of Radiology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
- Maternal Fetal Care Center, Boston Children’s Hospital, Boston, MA 02115, United States
| | - Patricia E Grant
- Division of Newborn Medicine, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
- Department of Radiology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
| | - Lana Vasung
- Division of Newborn Medicine, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, United States
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Chen Y, Xu R, Xie X, Wang T, Yang Z, Chen J. Fetal endoscopic tracheal occlusion for congenital diaphragmatic hernia: systematic review and meta-analysis. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2023; 61:667-681. [PMID: 36704940 DOI: 10.1002/uog.26164] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 12/29/2022] [Accepted: 01/09/2023] [Indexed: 05/13/2023]
Abstract
OBJECTIVE It is debated whether fetal endoscopic tracheal occlusion (FETO) is beneficial to fetuses with congenital diaphragmatic hernia (CDH) and whether FETO has different effects in moderate and severe CDH. We conducted a systematic review and meta-analysis including the latest evidence to assess the overall effects of FETO on clinical outcomes of CDH. METHODS We searched PubMed, EMBASE, The Cochrane Library, China National Knowledge Infrastructure, China Science and Technology Journal Database and Wanfang Database to retrieve eligible studies published before 8 September 2022. No language or study design restrictions were applied. Studies were included if CDH fetuses underwent FETO surgery and were compared with a cohort that underwent expectant management, with at least one outcome reported. The primary outcomes were mortality at 1, 6 and 12 months after birth, rates of pulmonary hypertension, use of extracorporeal membrane oxygenation (ECMO) and prematurity. Meta-analysis was conducted to obtain pooled odds ratios (ORs) and mean differences. The quality of included studies and pooled evidence was also assessed. RESULTS A total of 1187 CDH fetuses from 20 studies were included in the quantitative synthesis. FETO significantly reduced 1-month (OR, 0.56 (95% CI, 0.34-0.93); P = 0.02, number needed to treat (NNT) = 7.67) and 6-month (OR, 0.34 (95% CI, 0.18-0.65); P = 0.0009, NNT = 5.26) CDH mortality (moderate/low quality of evidence). Subgroup analysis suggested that the effects of FETO on the rates of pulmonary hypertension and ECMO usage were significant in severe CDH (low/moderate quality of evidence) but not in moderate CDH (low/very low quality of evidence). FETO was also associated with an increased risk of preterm prelabor rupture of membranes before 37 weeks' gestation (OR, 4.94 (95% CI, 2.25-10.88); P < 0.0001, number needed to harm (NNH) = 3.13) and preterm birth before 37 weeks (OR, 5.24 (95% CI, 3.33-8.23); P < 0.00001, NNH = 2.79) (high/moderate quality of evidence). However, FETO was not associated with severe complications, such as preterm birth before 32 weeks, placental abruption or chorioamnionitis (very low/low quality of evidence). CONCLUSIONS FETO is associated with a reduction in mortality, rate of pulmonary hypertension and ECMO usage in severe CDH, while it reduces only the risk of mortality in moderate CDH. Although FETO increases the risk of late prematurity, it does not result in extreme prematurity. © 2023 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- Y Chen
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - R Xu
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - X Xie
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - T Wang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Z Yang
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - J Chen
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
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9
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Gilbert RM, Gleghorn JP. Connecting clinical, environmental, and genetic factors point to an essential role for vitamin A signaling in the pathogenesis of congenital diaphragmatic hernia. Am J Physiol Lung Cell Mol Physiol 2023; 324:L456-L467. [PMID: 36749917 PMCID: PMC10042603 DOI: 10.1152/ajplung.00349.2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/31/2023] [Accepted: 02/06/2023] [Indexed: 02/09/2023] Open
Abstract
Congenital diaphragmatic hernia (CDH) is a developmental disorder that results in incomplete diaphragm formation, pulmonary hypoplasia, and pulmonary hypertension. Although a variety of genes have been linked to its etiology, CDH is not a monogenetic disease, and the cause of the condition is still unclear in the vast majority of clinical cases. By comparing human clinical data and experimental rodent data from the literature, we present clear support demonstrating the importance of vitamin A (vitA) during the early window of pregnancy when the diaphragm and lung are forming. Alteration of vitA signaling via dietary and genetic perturbations can create diaphragmatic defects. Unfortunately, vitA deficiency is chronic among people of child-bearing age, and this early window of diaphragm development occurs before many might be aware of pregnancy. Furthermore, there is an increased demand for vitA during this critical period, which exacerbates the likelihood of deficiency. It would be beneficial for the field to further investigate the connections between maternal vitA and CDH incidence, with the goal of determining vitA status as a CDH risk factor. Regular clinical monitoring of vitA levels in child-bearing years is a tractable method by which CDH outcomes could be prevented or improved.
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Affiliation(s)
- Rachel M Gilbert
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, United States
| | - Jason P Gleghorn
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, United States
- Department of Biological Sciences, University of Delaware, Newark, Delaware, United States
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10
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Olutoye OO, Joyeux L, King A, Belfort MA, Lee TC, Keswani SG. Minimally Invasive Fetal Surgery and the Next Frontier. Neoreviews 2023; 24:e67-e83. [PMID: 36720693 DOI: 10.1542/neo.24-2-e67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Most patients with congenital anomalies do not require prenatal intervention. Furthermore, many congenital anomalies requiring surgical intervention are treated adequately after birth. However, there is a subset of patients with congenital anomalies who will die before birth, shortly after birth, or experience severe postnatal complications without fetal surgery. Fetal surgery is unique in that an operation is performed on the fetus as well as the pregnant woman who does not receive any direct benefit from the surgery but rather lends herself to risks, such as hemorrhage, abruption, and preterm labor. The maternal risks involved with fetal surgery have limited the extent to which fetal interventions may be performed but have, in turn, led to technical innovations that have significantly advanced the field. This review will examine congenital abnormalities that can be treated with minimally invasive fetal surgery and introduce the next frontier of prenatal management of fetal surgical pathology.
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Affiliation(s)
- Oluyinka O Olutoye
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Luc Joyeux
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX.,Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX.,Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX
| | - Alice King
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX.,Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX.,Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX
| | - Michael A Belfort
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Texas Children's Hospital, Houston, TX
| | - Timothy C Lee
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX.,Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX.,Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX
| | - Sundeep G Keswani
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX.,Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX.,Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX
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11
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Budzanowski A, Loukogeorgakis S, Mullassery D, Blackburn S, Curry J, Ioannou I, Ali U, Cross K, Giuliani S, De Coppi P. Thoracoscopic vs open repair of congenital diaphragmatic hernia after extracorporeal membrane oxygenation: a comparison of intra-operative data. Pediatr Surg Int 2023; 39:82. [PMID: 36645513 PMCID: PMC9842545 DOI: 10.1007/s00383-022-05312-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/11/2022] [Indexed: 01/17/2023]
Abstract
PURPOSE ECMO is an escalation treatment for hypoxic respiratory failure in patients with CDH. Open repair has been advocated after ECMO indicating that physiological changes associated to thoracoscopic repair were not well tolerated. METHODS We have performed a retrospective review of all patients who underwent ECMO prior CDH repair over a 7 year period (2015-2021). Outcome measures were intra-operative Ph, PCO2, PO2 and FiO2 at 30 min, 1 h 30 min, and 2 h 30 min of surgery, operative time and recurrence rate. Data are shown in median (range). RESULTS Eleven patients required ECMO prior CDH repair. Six of eleven (55%) were done thoracoscopically (Group A) and five of eleven (45%) via laparotomy (Group B). Two of six (33%) patients (Group A) were converted to a laparotomy, one of six (16%) patient developed a recurrence, and there was no recurrence in Group B. Two of five (40%) patients died within the first 60 days of life, whilst there was no death in Group A. Intra-operative values are shown below. CONCLUSION Whilst this is a preliminary report of a limited number of patients, there is no obvious difference of intra-operative blood gas parameters during surgical repair in patients after ECMO. Thoracoscopic CDH repair may be considered in patients after ECMO.
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Affiliation(s)
| | - Stavros Loukogeorgakis
- Great Ormond Street Hospital for Children, SNAPS, London, UK
- Zayed Centre for Research, UCL Institute of Child Health London, 30 Guilford Street, London, WC1N 1EH, UK
| | | | - Simon Blackburn
- Great Ormond Street Hospital for Children, SNAPS, London, UK
| | - Joe Curry
- Great Ormond Street Hospital for Children, SNAPS, London, UK
| | - Ioannis Ioannou
- Anaesthesia Department, Great Ormond Street Hospital for Children, London, UK
| | - Usman Ali
- Anaesthesia Department, Great Ormond Street Hospital for Children, London, UK
| | - Kate Cross
- Great Ormond Street Hospital for Children, SNAPS, London, UK
| | | | - Paolo De Coppi
- Great Ormond Street Hospital for Children, SNAPS, London, UK.
- Zayed Centre for Research, UCL Institute of Child Health London, 30 Guilford Street, London, WC1N 1EH, UK.
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12
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Miyake Y, Tse WH, Wang JQ, Leon ND, Mourin M, Patel D, Aptekmann AO, Yamataka A, Keijzer R. The effect of tracheal occlusion in congenital diaphragmatic hernia in the nitrofen rat lung explant model. Pediatr Surg Int 2022; 39:61. [PMID: 36564649 DOI: 10.1007/s00383-022-05340-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/07/2022] [Indexed: 12/24/2022]
Abstract
PURPOSE Here, we establish a tracheal occlusion (TO) model with rat lung explants in nitrofen-induced pulmonary hypoplasia in the congenital diaphragmatic hernia (CDH). METHODS We extracted lungs from rats on an embryonic day 18. We mimicked TO in the lung explants by tying the trachea. We assessed lung weight, morphometry, and abundance of Ki-67, Active caspase-3, and Prosurfactant Protein C (proSP-C) with immunofluorescence. RESULTS Lung weight was higher in TO + than TO - on day 1. Abundance of Ki-67 was higher in TO + than TO - (0.15 vs. 0.32, p = 0.009 for day 1, 0.07 vs. 0.17, p = 0.004 for day 2, 0.07 vs. 0.12, p = 0.044 for day 3), and Active caspase-3 was higher in TO + than TO - on day 2 and day 3 (0.04 vs. 0.03 p = 0.669 for day 1, 0.03 vs. 0.13 p < 0.001 for day 2, 0.04 vs. 0.17 p = 0.008 for day3). However, proSP-C protein abundance was lower in TO + than TO - (67.9 vs. 59.1 p = 0.033 for day 1, 73.5 vs. 51.6 p = 0.038 for day 2, 83.1 vs. 56.4 p = 0.009 for day 3). CONCLUSIONS The TO model in lung explants mimics the outcomes of current surgical models of TO and further studies can reveal the cellular and molecular effects of TO in CDH lungs.
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Affiliation(s)
- Yuichiro Miyake
- Department of Surgery, Division of Pediatric Surgery and Children's Hospital Research Institute of Manitoba, University of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada.,Department of Pediatric General and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Wai Hei Tse
- Department of Surgery, Division of Pediatric Surgery and Children's Hospital Research Institute of Manitoba, University of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Jia Qi Wang
- Department of Surgery, Division of Pediatric Surgery and Children's Hospital Research Institute of Manitoba, University of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Nolan De Leon
- Department of Surgery, Division of Pediatric Surgery and Children's Hospital Research Institute of Manitoba, University of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Muntahi Mourin
- Department of Surgery, Division of Pediatric Surgery and Children's Hospital Research Institute of Manitoba, University of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Daywin Patel
- Department of Surgery, Division of Pediatric Surgery and Children's Hospital Research Institute of Manitoba, University of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Arzu Ozturk Aptekmann
- Department of Surgery, Division of Pediatric Surgery and Children's Hospital Research Institute of Manitoba, University of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Atsuyuki Yamataka
- Department of Pediatric General and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Richard Keijzer
- Department of Surgery, Division of Pediatric Surgery and Children's Hospital Research Institute of Manitoba, University of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada.
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13
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Danzer E, Rintoul NE, van Meurs KP, Deprest J. Prenatal management of congenital diaphragmatic hernia. Semin Fetal Neonatal Med 2022; 27:101406. [PMID: 36456433 DOI: 10.1016/j.siny.2022.101406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Recently, two randomized controlled, prospective trials, the Tracheal Occlusion to Accelerate Lung Growth (TOTAL) trials, reported the outcomes on fetal endoluminal tracheal occlusion (FETO) for isolated left congenital diaphragmatic hernia (CDH). FETO significantly improved outcomes for severe hypoplasia. The effect in moderate cases, where the balloon was inserted later in pregnancy, did not reach significance. In a pooled analysis investigating the effect of the heterogeneity of the treatment effect by the time point of occlusion and severity, the difference may be explained by a difference in the duration of occlusion. Nevertheless, FETO carries a significant risk of preterm birth. The primary objective of this review is to provide an overview of the rationale for fetal intervention in CDH and the results of the randomized trials. The secondary objective is to discuss the technical aspects of FETO. Finally, recent developments of potential alternative fetal approaches will be highlighted.
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Affiliation(s)
- Enrico Danzer
- Stanford University School of Medicine and Lucile Packard Children's Hospital, Division of Neonatal and Developmental Medicine, Palo Alto, CA, USA; Division of Pediatric Surgery, Memorial Sloan Kettering Cancer Center, Weill Cornell Medical College, New York, NY, USA.
| | - Natalie E Rintoul
- The Richard Wood Jr. Center for Fetal Diagnosis and Treatment and Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Krisa P van Meurs
- Stanford University School of Medicine and Lucile Packard Children's Hospital, Division of Neonatal and Developmental Medicine, Palo Alto, CA, USA
| | - Jan Deprest
- Academic Department Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Faculty of Medicine, Katholieke Universiteit Leuven, Leuven, Belgium; Center for Surgical Technologies, Faculty of Medicine, Katholieke Universiteit Leuven, Leuven, Belgium; Department of Obstetrics and Gynecology, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium; Institute of Women's Health, University College London Hospitals, London, United Kingdom
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14
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De Bie FR, Avitabile CM, Joyeux L, Hedrick HL, Russo FM, Basurto D, Deprest J, Rintoul NE. Neonatal and fetal therapy of congenital diaphragmatic hernia-related pulmonary hypertension. Arch Dis Child Fetal Neonatal Ed 2022; 107:458-466. [PMID: 34952853 DOI: 10.1136/archdischild-2021-322617] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 12/06/2021] [Indexed: 01/01/2023]
Abstract
Congenital diaphragmatic hernia (CDH) is a complex malformation characterised by a triad of pulmonary hypoplasia, pulmonary hypertension (PH) and cardiac ventricular dysfunction. Much of the mortality and morbidity in CDH is largely accounted for by PH, especially when persistent beyond the neonatal period and refractory to available treatment. Gentle ventilation, haemodynamic optimisation and pulmonary vasodilation constitute the foundations of neonatal treatment of CDH-related PH (CDH-PH). Moreover, early prenatal diagnosis, the ability to assess severity and the developmental nature of the condition generate the perfect rationale for fetal therapy. Shortcomings of currently available clinical therapies in combination with increased understanding of CDH pathophysiology have spurred experimental drug trials, exploring new therapeutic mechanisms to tackle CDH-PH. We herein discuss clinically available neonatal and fetal therapies specifically targeting CDH-PH and review the most promising experimental treatments and future research avenues.
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Affiliation(s)
- Felix R De Bie
- Department of Pediatric General, Thoracic, and Fetal Surgery, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA .,My FetUZ, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Leuven, Belgium, Katholieke Universiteit Leuven, Leuven, Flanders, Belgium
| | - Catherine M Avitabile
- Department of Pediatrics, Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Luc Joyeux
- My FetUZ, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Leuven, Belgium, Katholieke Universiteit Leuven, Leuven, Flanders, Belgium
| | - Holly L Hedrick
- Department of Pediatric General, Thoracic, and Fetal Surgery, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Francesca M Russo
- My FetUZ, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Leuven, Belgium, Katholieke Universiteit Leuven, Leuven, Flanders, Belgium.,Department of Obstetrics and Gynaecology, KU Leuven University Hospitals Leuven, Leuven, Flanders, Belgium
| | - David Basurto
- My FetUZ, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Leuven, Belgium, Katholieke Universiteit Leuven, Leuven, Flanders, Belgium
| | - Jan Deprest
- My FetUZ, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Leuven, Belgium, Katholieke Universiteit Leuven, Leuven, Flanders, Belgium.,Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, KU Leuven University Hospitals Leuven, Leuven, Flanders, Belgium
| | - Natalie E Rintoul
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Division of Neonatal Intensive Care, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
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15
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Tse WH, Higgins S, Patel D, Xing M, West AR, Labouta HI, Keijzer R. The maternal-fetal transfer of passive immunity as a mechanism of transplacental nanoparticle drug delivery for prenatal therapies. Biomater Sci 2022; 10:5243-5253. [PMID: 35912636 DOI: 10.1039/d2bm00293k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanoparticles administered into the maternal circulation and across the placenta are a potential clinical therapy to treat congenital diseases. The mechanism by which nanoparticles can safely cross the placenta for targeted drug delivery to the fetus remains poorly understood. We demonstrate that the maternal-fetal transfer of passive immunity through the neonatal Fc Receptor (FcRn) can induce the transplacental transfer of chitosan nanoparticles modifed with IgG antibodies (414 ± 27 nm). The transfer of FITC-tagged IgG-modified chitosan nanoparticles was 2.8 times higher (p = 0.0264) compared to similarly-sized unmodified chitosan nanoparticles (375 ± 17 nm). Co-administration of free IgG competitively diminished the transplacental transfer of IgG-modified nanoparticles, yet unmodified nanoparticles remained unaffected. Colocalization of the FcRn and the IgG-modified chitosan nanoparticles were observed with confocal microscopy. Barrier function before and after nanoparticle administration remained intact as determined by TEER (75-79 Ω cm2) and immmunofluorescence of ZO-1 tight junction proteins. The results provide insight into the clinical applications of nanoparticles for prenatal therapies using the mechanism of the maternal-fetal transfer of passive immunity.
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Affiliation(s)
- Wai Hei Tse
- Departments of Surgery, Division of Pediatric Surgery and Pediatrics & Child Health, University of Manitoba, R3E 0W2, Manitoba, Canada. .,Children's Hospital Research Institute of Manitoba, Winnipeg, R3E 3P4, Manitoba, Canada.,Department of Physiology & Pathophysiology, University of Manitoba, R3E 0W2, Manitoba, Canada
| | - Sean Higgins
- Departments of Surgery, Division of Pediatric Surgery and Pediatrics & Child Health, University of Manitoba, R3E 0W2, Manitoba, Canada. .,Children's Hospital Research Institute of Manitoba, Winnipeg, R3E 3P4, Manitoba, Canada
| | - Daywin Patel
- Departments of Surgery, Division of Pediatric Surgery and Pediatrics & Child Health, University of Manitoba, R3E 0W2, Manitoba, Canada. .,Children's Hospital Research Institute of Manitoba, Winnipeg, R3E 3P4, Manitoba, Canada.,Department of Physiology & Pathophysiology, University of Manitoba, R3E 0W2, Manitoba, Canada
| | - Malcolm Xing
- Department of Mechanical Engineering, University of Manitoba, R3T 2N2, Manitoba, Canada
| | - Adrian R West
- Children's Hospital Research Institute of Manitoba, Winnipeg, R3E 3P4, Manitoba, Canada.,Department of Physiology & Pathophysiology, University of Manitoba, R3E 0W2, Manitoba, Canada
| | - Hagar I Labouta
- Children's Hospital Research Institute of Manitoba, Winnipeg, R3E 3P4, Manitoba, Canada.,Apotex Centre, College of Pharmacy, University of Manitoba, R3E 3T5, Manitoba, Canada
| | - Richard Keijzer
- Departments of Surgery, Division of Pediatric Surgery and Pediatrics & Child Health, University of Manitoba, R3E 0W2, Manitoba, Canada. .,Children's Hospital Research Institute of Manitoba, Winnipeg, R3E 3P4, Manitoba, Canada.,Department of Physiology & Pathophysiology, University of Manitoba, R3E 0W2, Manitoba, Canada
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16
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Stewart LA, Klein-Cloud R, Gerall C, Fan W, Price J, Hernan RR, Krishnan US, Cheung EW, Middlesworth W, Chaves DV, Miller R, Simpson LL, Chung WK, Duron VP. Extracorporeal Membrane Oxygenation (ECMO) and its complications in newborns with congenital diaphragmatic hernia. J Pediatr Surg 2022; 57:1642-1648. [PMID: 35065805 DOI: 10.1016/j.jpedsurg.2021.12.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 12/19/2021] [Accepted: 12/23/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Extracorporeal Membrane Oxygenation (ECMO) is offered to patients with congenital diaphragmatic hernia (CDH) who are in severe respiratory and cardiac failure. We aim to describe the types of complications among these patients and their impact on survival. METHODS A single-center, retrospective review of CDH patients cannulated onto ECMO between January 2005 and November 2020 was conducted. ECMO complications, as categorized by the Extracorporeal Life Support Organization (ELSO), were correlated with survival status. Descriptive statistics were used to compare observed complications between survivors and non-survivors. RESULTS In our cohort of CDH neonates, 21% (54/258) were supported with ECMO, of whom, 61% (33/54) survived. Survivors and non-survivors were similar in baseline characteristics except for birthweight z-score (p = 0.043). Seventy percent of CDH neonates experienced complications during their ECMO run, with the most common categories being metabolic (48.1%) and mechanical (38.9%), followed by hemorrhage (22.2%), neurological (18.5%), renal (11.1%), pulmonary (7.4%), and cardiovascular (7.4%). The median number of complications per patient was higher in the non-survivor group (2 (IQR: 1-4) vs 1 (IQR: 0-2), p = 0.043). In addition, mechanical (57.1% vs 27.3%, p = 0.045) and renal (28.6% vs 0%, p = 0.002) complications were more common among non-survivors compared to survivors. CONCLUSION Complications occur frequently among ECMO-treated newborns with CDH, some of which have serious long-term consequences. Survivors had higher birth weight z-scores, shorter ECMO runs, and fewer complications per patient. Mechanical and renal complications were independently associated with mortality, emphasizing the utility of more focused strategies to target fluid balance and renal protection and to prevent circuit and cannula complications.
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Affiliation(s)
- Latoya A Stewart
- Columbia University Vagelos College of Physicians and Surgeons, 630W 168th Street, New York, NY 10032, United States
| | - Rafael Klein-Cloud
- Division of Pediatric Surgery, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - Claire Gerall
- Division of Pediatric Surgery, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - Weijia Fan
- Department of Biostatistics, Columbia University Mailman School of Public Health, 722W 168th Street, New York, NY 10032, United States
| | - Jessica Price
- Division of Pediatric Surgery, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - Rebecca R Hernan
- Department of Pediatrics, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - Usha S Krishnan
- Department of Pediatrics, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - Eva W Cheung
- Department of Pediatrics, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - William Middlesworth
- Division of Pediatric Surgery, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - Diana Vargas Chaves
- Department of Pediatrics, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - Russell Miller
- Department of Obstetrics and Gynecology, Columbia University Irving Medical Center, 622W 168th Street, PH 16, New York, NY 10032, United States
| | - Lynn L Simpson
- Department of Obstetrics and Gynecology, Columbia University Irving Medical Center, 622W 168th Street, PH 16, New York, NY 10032, United States
| | - Wendy K Chung
- Department of Pediatrics, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States
| | - Vincent P Duron
- Division of Pediatric Surgery, NewYork Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, 3959 Broadway, 2nd Floor, New York, NY 10032, United States.
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17
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Basurto D, Maria Russo F, Papastefanou I, Bredaki E, Allegaert K, Pertierra A, Debeer A, Catte LDE, Lewi L, Devlieger R, Coppi PDE, Gratacos E, Gomez O, Deprest J. Pulmonary hypertension in congenital diaphragmatic hernia: ANTENATAL PREDICTION AND IMPACT ON NEONATAL MORTALITY. Prenat Diagn 2022; 42:1303-1311. [PMID: 35801282 DOI: 10.1002/pd.6207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/15/2022] [Accepted: 07/03/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To determine the prevalence of pulmonary hypertension(PAH) in left-sided congenital diaphragmatic hernia(CDH); how we could predict it; and how PAH contributed to the model for mortality prediction. STUDY DESIGN Retrospective analysis in three European centers. The primary outcome was the presence of PAH on postnatal day(d)1,7, and at discharge. Studied predictors of PAH were: observed/expected-lung/head-ratio(o/e LHR), liver-herniation, FETO, and gestational age(GA) at delivery. The combined effect of pre-and postnatal variables on mortality was modeled by Cox regression. RESULTS Of the 197 neonates, 56(28.4%) died. At d1, 67.5%(133/197) had PAH and 61.9% (101/163) by d7. Overall, 6.4% (9/141) had PAH at discharge.At d1, o/eLHR(OR 0.96) and FETO(OR 2.99) independently correlated to PAH(AUC:0.74). At d7, PAH significantly correlated only with the use of FETO (OR 3.9;AUC:0.65). None were significant for PAH at discharge.Combining the occurrence of PAH with antenatal biomarkers improved mortality prediction(p=0.02), in a model including o/eLHR(HR:0.94), FETO(HR:0.35), liver herniation(HR:16.78), and PAH(HR:15.95). CONCLUSIONS Antenatal prediction of PAH was only moderate. The postnatal occurrence of PAH further increases the risk of death. Whereas this may be used to counsel parents in the postnatal period, our study demonstrates there is a need to find more accurate antenatal predictors for PAH. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- David Basurto
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Belgium
| | - Francesca Maria Russo
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Belgium.,Clinical Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | | | - Emma Bredaki
- Institute for Women's Health, University College London, London, UK
| | - Karel Allegaert
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Belgium.,Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Africa Pertierra
- Clinical Department of Neonatology, Sant Joan de Déu University Hospital, Barcelona, Spain.,BCNatal, Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, Institut Clinic de Ginecologia, IDIBAPS, CIBER-ER, University of Barcelona, Obstetricia i Neonatologia, Barcelona, Spain
| | - Anne Debeer
- Clinical Department of Neonatology, University Hospitals Leuven, Leuven, Belgium
| | - Luc DE Catte
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Belgium.,Clinical Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | - Liesbeth Lewi
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Belgium.,Clinical Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | - Roland Devlieger
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Belgium.,Clinical Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | - Paolo DE Coppi
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Belgium.,NIHR BRC Great Ormond Street Hospital and Institute for Child Health, University College London, London, UK
| | - Eduard Gratacos
- BCNatal, Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, Institut Clinic de Ginecologia, IDIBAPS, CIBER-ER, University of Barcelona, Obstetricia i Neonatologia, Barcelona, Spain
| | - Olga Gomez
- BCNatal, Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, Institut Clinic de Ginecologia, IDIBAPS, CIBER-ER, University of Barcelona, Obstetricia i Neonatologia, Barcelona, Spain
| | - Jan Deprest
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Belgium.,Clinical Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium.,Institute for Women's Health, University College London, London, UK
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18
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De Bie FR, Halline CG, Kotzur T, Hayes K, Rouse CC, Chang J, Larson AC, Khan SA, Spina A, Tilden S, Russo FM, Hedrick HL, Deprest J, Partridge EA. Prenatal treprostinil reduces the pulmonary hypertension phenotype in the rat model of congenital diaphragmatic hernia. EBioMedicine 2022; 81:104106. [PMID: 35779494 PMCID: PMC9244734 DOI: 10.1016/j.ebiom.2022.104106] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/27/2022] [Accepted: 05/27/2022] [Indexed: 11/30/2022] Open
Abstract
Background Persistent pulmonary hypertension (PH) causes significant mortality and morbidity in infants with congenital diaphragmatic hernia (CDH). Since pulmonary vascular abnormalities in CDH develop early during foetal development, we hypothesized that prenatal maternal administration of treprostinil, through its anti-remodelling effect, would improve the PH-phenotype in the nitrofen rat model of CDH. Methods In a dose-finding study in normal, healthy pregnant rats, we demonstrated target-range foetal plasma treprostinil concentrations without signs of toxicity. Next, an efficacy study was performed assessing the effects of treprostinil administration at 900 and 1500ng/kg/min from gestational day (GD) 16 until term (GD 21) in CDH and control pups. Pulmonary vascular and airway morphometry, lung mechanics, and expression patterns of genes implicated in the prostaglandin vasoactive pathway were studied. Findings In rats maternal administration of 1500ng/kg/min treprostinil reached target foetal concentrations, with no detrimental maternal or foetal side-effects. Prenatal exposure to 900 and 1500 ng/kg/min treprostinil reduced the medial wall thickness (%MWT) (CDH·900, 38.5± 8·4%; CDH.1500, 40·2±9·7%; CDH, 46·6±8·2%; both p < 0·0001) in rat pups with CDH, however increased the %MWT in normal foetuses (C.T.900, 36·6±11·1%; C.T.1500, 36·9±9·3%; C.P., 26·9±6·2%; both p < 0·001). Pulmonary airway development, lung hypoplasia and pulmonary function were unaffected by drug exposure. Interpretation In pregnant rats maternally administered treprostinil crosses the placenta, attains foetal target concentrations, and is well tolerated by both mother and foetuses. This report shows a significant reduction of pulmonary arteriole muscularization with prenatal treprostinil in a nitrofen rat model, supporting the promise of this treatment approach for PH of CDH. Funding United Therapeutics Corporation provided treprostinil and financial support (ISS-2020-10879).
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Verla MA, Style CC, Lee TC, Menchaca AD, Lau PE, Mehollin-Ray AR, Fernandes CJ, Keswani SG, Olutoye OO. Does creating a dome reduce recurrence in congenital diaphragmatic hernia following patch repair? J Pediatr Surg 2022; 57:637-642. [PMID: 34836640 DOI: 10.1016/j.jpedsurg.2021.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 09/23/2021] [Accepted: 10/13/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE To develop a quantifiable approach to identify a dome shape of the repaired diaphragm using post-operative chest radiograph and to determine if a dome-shaped prosthetic patch repair is associated with a decreased rate of CDH recurrence. METHODS We conducted a retrospective review of all neonates evaluated at our institution from January 2004 to August 2017 with left- and right-sided CDH with at least 6 months of follow-up after CDH repair. Patch use, post-operative imaging and postnatal outcomes were analyzed. Neonates with patch repair were divided into two groups based on the presence of a dome. Using postoperative chest radiographs, the presence of a dome was classified as having a vertical-horizontal diaphragm ratio (VHDR) greater than 20%. Primary outcome was CDH recurrence after repair. RESULTS We identified 192 neonates who met our inclusion criteria. Cohort survival was 96%, recurrence rate was 15%, 78% had a left-sided CDH; 54% received a patch repair, of which 58% had a type C defect. Of the 104 infants with patch repairs, the CDH recurrence rate was 22% (n = 23) at a median age of 8.5 months (3.8, 20.1). Although neonates with a dome repair had more ECMO use and longer hospital stay, their recurrence rate was about half of those with a non-dome repair (14% vs 28%, p = 0.07). CONCLUSIONS A dome-shaped repair may reduce recurrence following prosthetic patch repair of congenital diaphragmatic hernia. A larger, multi-institutional study is needed to statistically validate this clinically significant observation. TYPE OF STUDY Retrospective review. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Mariatu A Verla
- Texas Children's Fetal Center, Houston, TX, USA; Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Candace C Style
- Center for Regenerative Medicine, Nationwide Children's Hospital, 575 Children's Drive, Columbus, OH 43205, USA.
| | - Timothy C Lee
- Texas Children's Fetal Center, Houston, TX, USA; Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Alicia D Menchaca
- Center for Regenerative Medicine, Nationwide Children's Hospital, 575 Children's Drive, Columbus, OH 43205, USA
| | - Patricio E Lau
- Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Amy R Mehollin-Ray
- Texas Children's Fetal Center, Houston, TX, USA; Texas Children's Hospital, Department of Radiology, Baylor College of Medicine, Houston, TX, USA
| | - Caraciolo J Fernandes
- Texas Children's Fetal Center, Houston, TX, USA; Texas Children's Hospital, Department of Pediatrics - Newbowrn Section, Baylor College of Medicine, Houston, TX, USA
| | - Sundeep G Keswani
- Texas Children's Fetal Center, Houston, TX, USA; Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Oluyinka O Olutoye
- Center for Regenerative Medicine, Nationwide Children's Hospital, 575 Children's Drive, Columbus, OH 43205, USA
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20
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Mehollin-Ray AR. Prenatal lung volumes in congenital diaphragmatic hernia and their effect on postnatal outcomes. Pediatr Radiol 2022; 52:637-642. [PMID: 34435224 DOI: 10.1007/s00247-021-05153-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/31/2021] [Accepted: 07/12/2021] [Indexed: 11/30/2022]
Abstract
Lung volume measurement on fetal MRI is a component of the imaging workup for various prenatal conditions, but its use as a prognosticator has been most heavily studied in congenital diaphragmatic hernia (CDH). Pediatric radiologists who perform and interpret fetal MRI must be familiar with the technical aspects of lung volume measurement to guarantee accurate measurement and reporting. Variability in timing and type of measurement at different fetal centers also requires pediatric radiologists to be up-to-date with the literature and aware of their center's internal data. This paper provides both a how-to guide for measuring fetal lung volumes on MRI and a comprehensive review of the CDH outcome literature to serve as a convenient reference for the pediatric radiologist.
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Affiliation(s)
- Amy R Mehollin-Ray
- E. B. Singleton Department of Radiology, Texas Children's Hospital, Baylor College of Medicine, 6701 Fannin St., Suite 470, Houston, TX, 77030, USA.
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21
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Olutoye Ii OO, Short WD, Gilley J, Hammond Ii JD, Belfort MA, Lee TC, King A, Espinoza J, Joyeux L, Lingappan K, Gleghorn JP, Keswani SG. The Cellular and Molecular Effects of Fetoscopic Endoluminal Tracheal Occlusion in Congenital Diaphragmatic Hernia. Front Pediatr 2022; 10:925106. [PMID: 35865706 PMCID: PMC9294219 DOI: 10.3389/fped.2022.925106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/07/2022] [Indexed: 11/13/2022] Open
Abstract
Congenital diaphragmatic hernia (CDH) is a complex disease associated with pulmonary hypoplasia and pulmonary hypertension. Great strides have been made in our ability to care for CDH patients, specifically in the prenatal improvement of lung volume and morphology with fetoscopic endoluminal tracheal occlusion (FETO). While the anatomic effects of FETO have been described in-depth, the changes it induces at the cellular and molecular level remain a budding area of CDH research. This review will delve into the cellular and molecular effects of FETO in the developing lung, emphasize areas in which further research may improve our understanding of CDH, and highlight opportunities to optimize the FETO procedure for improved postnatal outcomes.
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Affiliation(s)
- Oluyinka O Olutoye Ii
- Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX, United States.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States
| | - Walker D Short
- Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX, United States.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States
| | - Jamie Gilley
- Division of Neonatology, Department of Pediatrics, Texas Children's Hospital, Houston, TX, United States
| | - J D Hammond Ii
- Division of Neonatology, Department of Pediatrics, Texas Children's Hospital, Houston, TX, United States
| | - Michael A Belfort
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, United States.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, United States
| | - Timothy C Lee
- Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX, United States.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States.,Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, United States
| | - Alice King
- Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX, United States.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States.,Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, United States
| | - Jimmy Espinoza
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, United States.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, United States
| | - Luc Joyeux
- Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX, United States.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States.,Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, United States
| | - Krithika Lingappan
- Division of Neonatology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Jason P Gleghorn
- Department of Biomedical Engineering, University of Delaware, Newark, DE, United States
| | - Sundeep G Keswani
- Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX, United States.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States.,Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, United States
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22
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Abstract
PURPOSE OF REVIEW Congenital diaphragmatic hernia (CDH) is a structural birth defect that results in significant neonatal morbidity and mortality. CDH occurs in 2-4 per 10 000 pregnancies, and despite meaningful advances in neonatal intensive care, the mortality rate in infants with isolated CDH is still 25-30%. In this review, we will present data on the molecular underpinnings of pathological lung development in CDH, prenatal diagnosis, and prognostication in CDH cases, existing fetal therapy modalities, and future directions. RECENT FINDINGS Developments in the prenatal assessment and in-utero therapy of pregnancies complicated by congenital diaphragmatic hernia are rapidly evolving. Although ultrasound has been the mainstay of prenatal diagnosis, fetal MRI appears to be an increasingly important modality for severity classification. While fetal endoscopic tracheal occlusion (FETO) may have a role in the prenatal management of severe CDH cases, it is possible that future therapeutic paradigms will incorporate adjunct medical interventions with either stem cells or sildenafil in order to address the vascular effects of CDH on the developing lung. SUMMARY Both animal and human data have shown that the pathophysiological underpinnings of CDH are multifactorial, and it appears that future prenatal assessments and therapies will likely be as well.
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23
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Donepudi R, Belfort MA, Shamshirsaz AA, Lee TC, Keswani SG, King A, Ayres NA, Fernandes CJ, Sanz-Cortes M, Nassr AA, Espinoza AF, Style CC, Espinoza J. Fetal endoscopic tracheal occlusion and pulmonary hypertension in moderate congenital diaphragmatic hernia. J Matern Fetal Neonatal Med 2021; 35:6967-6972. [PMID: 34096456 DOI: 10.1080/14767058.2021.1932806] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To study the role of fetal endoscopic tracheal occlusion (FETO) on resolution of pulmonary hypertension (PH) in fetuses with isolated moderate left-sided diaphragmatic hernia (CDH). METHODS This retrospective study included fetuses with CDH evaluated between February 2004 and July 2017. Using the tracheal occlusion to accelerate lung growth (TOTAL) trial definition, we classified fetuses into moderate left CDH if O/E-LHR (observed/expected-lung head ratio) was 25-34.9% regardless of liver position or O/E-LHR of 35-44.9% if liver was in the chest. Postnatal echocardiograms were used to diagnose PH. Logistic regression analyses were performed to determine the relationship of FETO with study outcomes. RESULTS Of 184 cases with no other major anomalies, 30 (16%) met criteria. There were nine FETO and 21 non-FETO cases. By hospital discharge, a higher proportion of infants in the FETO group had resolution of PH (87.5 (7/8) vs. 40% (8/20); p=.013). FETO was associated with adjusted odds ratio of 17.3 (95% CI: 1.75-171; p=.015) to resolve PH by hospital discharge. No significant differences were noted in need for ECMO or survival to discharge between groups. CONCLUSIONS Infants with moderate left-sided CDH according to O/E-LHR, FETO is associated with resolution of PH by the time of hospital discharge.
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Affiliation(s)
- Roopali Donepudi
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - Michael A Belfort
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Alireza A Shamshirsaz
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - Timothy C Lee
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Sundeep G Keswani
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Alice King
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Nancy A Ayres
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Department of Pediatrics - Cardiology Section, Baylor College of Medicine, Houston, TX, USA
| | - Caraciolo J Fernandes
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Newborn Section, Baylor College of Medicine, Houston, TX, USA
| | - Magdalena Sanz-Cortes
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - Ahmed A Nassr
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - Andres F Espinoza
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Candace C Style
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Jimmy Espinoza
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA.,Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
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24
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Perrone EE, Deprest JA. Fetal endoscopic tracheal occlusion for congenital diaphragmatic hernia: a narrative review of the history, current practice, and future directions. Transl Pediatr 2021; 10:1448-1460. [PMID: 34189104 PMCID: PMC8192998 DOI: 10.21037/tp-20-130] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Fetal intervention for fetuses with congenital diaphragmatic hernia (CDH) has been investigated for over 30 years and is summarized in this manuscript. The review begins with a discussion of the history of fetal intervention for this severe congenital anomaly beginning with open fetal surgery with repair of the anatomical defect, shifting towards tracheal occlusion via open surgery techniques, and finally fetoscopic endoluminal balloon tracheal occlusion using a percutaneous approach. The current technique of fetal endoscopic tracheal occlusion (FETO) is described in detail with steps of the procedure and complementary figures. The main outcomes of single-institutional studies and multiple systematic reviews are examined and discussed. Despite these studies, the fetal community agrees that FETO remains investigational at this time as there is insufficient evidence to recommend it as the standard of care for CDH. A randomized controlled trial, The Tracheal Occlusion to Accelerate Lung Growth (TOTAL) trial, has been designed to attempt to answer this question in an elaborate, international, multi-institutional study and is described in the text. Finally, future directions of fetal intervention for antenatally diagnosed CDH are discussed, including options for non-isolated CDH, the Smart-TO balloon for nonoperative reversal of occlusion, and transplacental sildenafil for treatment of pulmonary hypertension prior to birth.
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Affiliation(s)
- Erin E Perrone
- Department of Surgery, Section of Pediatric Surgery, Fetal Diagnosis and Treatment Center, University of Michigan, Michigan Medicine, Ann Arbor, MI, USA
| | - Jan A Deprest
- Clinical Department of Obstetrics and Gynecology, Academic Department of Development and Regeneration, Woman and Child, Leuven, Belgium.,Institute of Women's Health, University College London, London, UK
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25
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Kosiv KA, Moon-Grady A, Hogan W, Keller R, Rapoport R, Rogers E, Feldstein VA, Lee H, Peyvandi S. Fetal cerebrovascular impedance is reduced in left congenital diaphragmatic hernia. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 57:386-391. [PMID: 32068925 PMCID: PMC7431368 DOI: 10.1002/uog.21992] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 01/31/2020] [Accepted: 02/09/2020] [Indexed: 06/10/2023]
Abstract
OBJECTIVES Congenital diaphragmatic hernia (CDH) can cause a significant mass effect in the fetal thorax, displacing the heart into the opposite hemithorax. In left-sided CDH (L-CDH), this is associated with smaller left-sided cardiac structures and reduced left-ventricular cardiac output (LVCO). The effect of these physiologic changes on cerebral blood flow is not well understood. We sought to describe the middle cerebral artery (MCA) pulsatility index (PI), a measure of cerebrovascular impedance, in fetuses with L-CDH and those with right-sided CDH (R-CDH) compared with unaffected fetuses, and the relationship between MCA-PI and LVCO. We hypothesized that MCA-PI would be lower in fetuses with L-CDH and similar in those with R-CDH compared to controls, and that MCA-PI would be correlated with LVCO. METHODS We identified all fetuses with CDH evaluated at The University of California San Francisco, San Francisco, CA, USA from 2011 to 2018. Fetal echocardiograms and ultrasound scans were reviewed. Umbilical artery and MCA Doppler examinations were assessed to calculate pulsatility indices. Ventricular outputs were calculated using Doppler-derived stroke volume and fetal heart rate. Lung-to-head ratio (LHR), estimated fetal weight, biparietal diameter (BPD) and head circumference (HC) were obtained from fetal sonograms. Measurements in fetuses with CDH, according to the side of the defect, were compared with those in unaffected, gestational age-matched controls. A subset of CDH survivors had available data on neurodevelopmental outcome, as assessed using the Bayley Scales of Infant Development, 3rd edition. RESULTS A total of 64 fetuses with CDH (L-CDH, n = 53; R-CDH, n = 11) comprised the study groups, with 27 unaffected fetuses serving as controls. Mean gestational age at evaluation was similar between the three groups. Compared to controls, fetuses with L-CDH had significantly lower LVCO expressed as a percentage of combined cardiac output (CCO) (32%; 95% CI, 29-35% vs 38%; 95% CI, 33-42%; P = 0.04) and lower MCA-PI Z-score (-1.3; 95% CI, -1.7 to -1.0 vs 0.08; 95% CI, -0.5 to 0.6; P < 0.001), while they did not differ between the R-CDH group and controls. There was a strong positive association between LVCO as a percentage of CCO and MCA-PI Z-score in the overall cohort of CDH and control fetuses (P = 0.01). BPD and HC were similar between the three groups. At neurodevelopmental follow-up, mean cognitive, motor and language scores in the CDH group were within 1 SD of those in the general population. CONCLUSION MCA-PI values are significantly lower in fetuses with L-CDH as compared to controls, and lower LVCO was correlated with lower MCA vascular impedance. The neurodevelopmental effect of changes in MCA-PI in response to decreased LVCO is unknown, although, on average, CDH survivors had neurodevelopmental scores in the normal range. This may reflect a fetal compensatory mechanism in response to diminished antegrade cerebral blood flow. © 2020 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- Katherine A. Kosiv
- The University of California, San Francisco Department of Pediatrics, Division of Pediatric Cardiology, San Francisco, CA
| | - Anita Moon-Grady
- The University of California, San Francisco Department of Pediatrics, Division of Pediatric Cardiology, San Francisco, CA
| | - Whitnee Hogan
- The University of California, San Francisco Department of Pediatrics, Division of Pediatric Cardiology, San Francisco, CA
| | - Roberta Keller
- The University of California, San Francisco Department of Pediatrics, Division of Neonatology, San Francisco, CA
| | - Rebecca Rapoport
- The University of California, San Francisco Department of Pediatrics, Division of Neonatology, San Francisco, CA
| | - Elizabeth Rogers
- The University of California, San Francisco Department of Pediatrics, Division of Neonatology, San Francisco, CA
| | - Vickie A. Feldstein
- The University of California, San Francisco Department of Pediatrics, Department of Radiology & Biomedical Imaging, San Francisco, CA
| | - Hanmin Lee
- The University of California, San Francisco Department of Pediatrics, Department of Surgery, San Francisco, CA
| | - Shabnam Peyvandi
- The University of California, San Francisco Department of Pediatrics, Division of Pediatric Cardiology, San Francisco, CA
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Ruano R, Ibirogba ER, Wyatt MA, Balakrishnan K, Qureshi MY, Kolbe AB, Dearani JA, Boesch RP, Segura L, Arendt KW, Bendel-Stenzel E, Salik SS, Klinkner DB. Sequential Minimally Invasive Fetal Interventions for Two Life-Threatening Conditions: A Novel Approach. Fetal Diagn Ther 2020; 48:70-77. [PMID: 33080593 DOI: 10.1159/000510635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 08/03/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION In utero interventions are performed in fetuses with "isolated" major congenital anomalies to improve neonatal outcomes and quality of life. Sequential in utero interventions to treat 2 anomalies in 1 fetus have not yet been described. CASE PRESENTATION Here, we report a fetus with a large left-sided intralobar bronchopulmonary sequestration (BPS) causing mediastinal shift, a small extralobar BPS, and concomitant severe left-sided congenital diaphragmatic hernia (CDH). At 26-week gestation, the BPS was noted to be increasing in size with a significant reduction in right lung volume and progression to fetal hydrops. The fetus underwent ultrasound-guided ablation of the BPS feeding vessel leading to complete tumor regression. However, lung development remained poor (O/E-LHR: 0.22) due to the left-sided CDH, prompting fetal endoscopic tracheal occlusion therapy at 28-week gestation to allow increased lung growth. After vaginal delivery, the newborn underwent diaphragmatic repair with resection of the extralobar sequestration. He was discharged home with tracheostomy on room air at 9 months. DISCUSSION/CONCLUSION Sequential in utero interventions to treat 2 severe major anomalies in the same fetus have not been previously described. This approach may be a useful alternative in select cases with otherwise high morbidity/mortality. Further studies are required to confirm our hypothesis.
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Affiliation(s)
- Rodrigo Ruano
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA, .,Center for Regenerative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA,
| | - Eniola R Ibirogba
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Michelle A Wyatt
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Karthik Balakrishnan
- Department of Otorhinolaryngology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - M Yasir Qureshi
- Department of Cardiology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Amy B Kolbe
- Department of Radiology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Joseph A Dearani
- Division of Cardiovascular Surgery, Department of Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - R Paul Boesch
- Division of Pediatric Pulmonology, Department of Pediatrics, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Leal Segura
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Katherine W Arendt
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Ellen Bendel-Stenzel
- Division of Neonatology, Department of Pediatrics, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Shana S Salik
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Denise B Klinkner
- Division of Pediatric Surgery, Department of Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
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Ville Y. Should we offer fetal surgery for severe congenital diaphragmatic hernia or bring these cases to trial? Difference between chance and hazard. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2020; 56:491-492. [PMID: 33001494 DOI: 10.1002/uog.22103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/17/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Y Ville
- Fetal Medicine and Surgery Centre, MICADO Consortium (Multidisciplinary Initiative for Congenital and Developmental Anomalies), Université de Paris, Hôpital Necker-Enfants Malades, Paris, France
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Deprest J. Prenatal treatment of severe congenital diaphragmatic hernia: there is still medical equipoise. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2020; 56:493-497. [PMID: 33001496 DOI: 10.1002/uog.22182] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/08/2020] [Accepted: 06/26/2020] [Indexed: 06/11/2023]
Affiliation(s)
- J Deprest
- Clinical Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
- Academic Department Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Institute for Woman's Health, University College London, London, UK
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Abstract
Fetal intervention has progressed in the past two decades from experimental proof-of-concept to practice-adopted, life saving interventions in human fetuses with congenital anomalies. This progress is informed by advances in innovative research, prenatal diagnosis, and fetal surgical techniques. Invasive open hysterotomy, associated with notable maternal-fetal risks, is steadily replaced by less invasive fetoscopic alternatives. A better understanding of the natural history and pathophysiology of congenital diseases has advanced the prenatal regenerative paradigm. By altering the natural course of disease through regrowth or redevelopment of malformed fetal organs, prenatal regenerative medicine has transformed maternal-fetal care. This review discusses the uses of regenerative medicine in the prenatal diagnosis and management of three congenital diseases: congenital diaphragmatic hernia, lower urinary tract obstruction, and spina bifida.
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Affiliation(s)
- Rodrigo Ruano
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology and Center for Regenerative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
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Kashyap AJ, Dekoninck PLJ, Rodgers KA, Thio M, Mcgillick EV, Amberg BJ, Skinner SM, Moxham AM, Russo FM, Deprest JA, Hooper SB, Crossley KJ, Hodges RJ. Antenatal sildenafil treatment improves neonatal pulmonary hemodynamics and gas exchange in lambs with diaphragmatic hernia. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2019; 54:506-516. [PMID: 31364206 DOI: 10.1002/uog.20415] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 07/06/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVES Infants with congenital diaphragmatic hernia (CDH) are predisposed to pulmonary hypertension after birth, owing to lung hypoplasia that impairs fetal pulmonary vascular development. Antenatal sildenafil treatment attenuates abnormal pulmonary vascular and alveolar development in rabbit and rodent CDH models, but whether this translates to functional improvements after birth remains unknown. We aimed to evaluate the effect of antenatal sildenafil on neonatal pulmonary hemodynamics and lung function in lambs with diaphragmatic hernia (DH). METHODS DH was surgically induced at approximately 80 days' gestation in 16 lamb fetuses (term in lambs is approximately 147 days). From 105 days' gestation, ewes received either sildenafil (0.21 mg/kg/h intravenously) or saline infusion until delivery (n = 8 fetuses in each group). At approximately 138 days' gestation, all lambs were instrumented and then delivered via Cesarean section. The lambs were ventilated for 120 min with continuous recording of physiological (pulmonary and carotid artery blood flow and pressure; cerebral oxygenation) and ventilatory parameters, and regular assessment of arterial blood gas tensions. Only lambs that survived until delivery and with a confirmed diaphragmatic defect at postmortem examination were included in the analysis; these comprised six DH-sildenafil lambs and six DH-saline control lambs. RESULTS Lung-to-body-weight ratio (0.016 ± 0.001 vs 0.013 ± 0.001; P = 0.06) and dynamic lung compliance (0.8 ± 0.2 vs 0.7 ± 0.2 mL/cmH2 O; P = 0.72) were similar in DH-sildenafil lambs and controls. Pulmonary vascular resistance decreased following lung aeration to a greater degree in DH-sildenafil lambs, and was 4-fold lower by 120 min after cord clamping than in controls (0.6 ± 0.1 vs 2.2 ± 0.6 mmHg/(mL/min); P = 0.002). Pulmonary arterial pressure was also lower (46 ± 2 vs 59 ± 2 mmHg; P = 0.048) and pulmonary blood flow higher (25 ± 3 vs 8 ± 2 mL/min/kg; P = 0.02) in DH-sildenafil than in DH-saline lambs at 120 min. Throughout the 120-min ventilation period, the partial pressure of arterial carbon dioxide tended to be lower in DH-sildenafil lambs than in controls (63 ± 8 vs 87 ± 8 mmHg; P = 0.057), and there was no significant difference in partial pressure of arterial oxygen between the two groups. CONCLUSIONS Sustained maternal antenatal sildenafil infusion reduced pulmonary arterial pressure and increased pulmonary blood flow in DH lambs for the first 120 min after birth. These findings of improved pulmonary vascular function are consistent with improved pulmonary vascular structure seen in two previous animal models. The data support the rationale for a clinical trial investigating the effect of antenatal sildenafil in reducing the risk of neonatal pulmonary hypertension in infants with CDH. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- A J Kashyap
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - P L J Dekoninck
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Erasmus MC, Rotterdam, The Netherlands
| | - K A Rodgers
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - M Thio
- Newborn Research Centre, The Royal Women's Hospital, Melbourne, Australia
- Department of Obstetrics and Gynaecology, The University of Melbourne, Australia
| | - E V Mcgillick
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - B J Amberg
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - S M Skinner
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - A M Moxham
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - F M Russo
- Department of Obstetrics and Gynaecology, Division of Woman and Child, University Hospitals Leuven, Leuven, Belgium
| | - J A Deprest
- Department of Obstetrics and Gynaecology, Division of Woman and Child, University Hospitals Leuven, Leuven, Belgium
- Institute for Women's Health, University College London Hospital, London, UK
| | - S B Hooper
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - K J Crossley
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - R J Hodges
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Australia
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
- Monash Women's and Newborn Program, Monash Health, Melbourne, Australia
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