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Lapa DA, Callado GY, Catissi G, Trigo L, Faig-Leite F, Sevilla APAB. The impact of a biocellulose-based repair of fetal open spina bifida on the need to untether the cord: is it time to unify techniques for prenatal repair? EINSTEIN-SAO PAULO 2024; 22:eAO0557. [PMID: 38695415 PMCID: PMC11081024 DOI: 10.31744/einstein_journal/2024ao0557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 11/27/2023] [Indexed: 05/12/2024] Open
Abstract
OBJECTIVE To report the need for cord untethering after prenatal repair of open spina bifida using a unique biocellulose-based technique performed at a later gestational age. METHODS An observational cohort study was conducted to determine the incidence of tethered cord syndrome. Between May 2013 and May 2022, we performed 172 procedures using the percutaneous fetoscopic approach in fetuses at 26-28 weeks of gestation. After placode dissection, a biocellulose patch was placed to cover the placode, a myofascial flap (when possible) was dissected, and the skin was closed. Owing to death or loss to follow-up, 23 cases were excluded. Cord tethering syndrome was defined as symptoms of medullary stretching, and the infants were evaluated and operated on by local neurosurgeons after an magnetic resonance imaging examination. Infants over 30-month had ambulation and neurodevelopment evaluations (PEDI scale). RESULTS Among 172 cases operated at a median gestational age of 26.7 weeks and delivered at 33.2 weeks, 149 cases were available for postnatal follow-up, and cord untethering was needed in 4.4% of cases (6/136; excluding 13 cases younger than 12 months). Cerebrospinal fluid diversion and bladder catheterization were needed in 38% and 36% of cases, respectively. Of the 78 cases evaluated at 30 months, 49% were ambulating independently, and 94% had normal social function. CONCLUSION The biocellulose-based technique was associated with a low rate of cord tethering, wich may be attributed to the lack of the duramater suture during prenatal repair, the formation of a neoduramater and/or later gestational age of surgery.
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Affiliation(s)
- Denise Araújo Lapa
- Hospital Israelita Albert EinsteinSão PauloSPBrazilFetal Therapy Program, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
- Hospital Infantil SabaraSão PauloSPBrazilHospital Infantil Sabara, São Paulo, SP, Brazil.
| | - Gustavo Yano Callado
- Hospital Israelita Albert EinsteinFaculdade Israelita de Ciências da Saúde Albert EinsteinSão PauloSPBrazilFaculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
| | - Giulia Catissi
- Hospital Israelita Albert EinsteinSão PauloSPBrazilFetal Therapy Program, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
| | - Lucas Trigo
- Hospital Sant Joan de Déu BarcelonaCataluñaEspañaHospital Sant Joan de Déu Barcelona, Cataluña, España.
- Hospital Clínic de BarcelonaFetal Medicine Research Center BarcelonaCataluñaEspañaFetal Medicine Research Center Barcelona, Hospital Clínic de Barcelona, Cataluña, España.
| | - Fernanda Faig-Leite
- Hospital Israelita Albert EinsteinSão PauloSPBrazilFetal Therapy Program, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
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Lee SY, Du Y, Hassan AES, Brown E, Saadai P, Hirose S, Wang A, Farmer DL. Evolution and Variations of the Ovine Model of Spina Bifida. Fetal Diagn Ther 2023; 50:491-500. [PMID: 37393899 PMCID: PMC10757987 DOI: 10.1159/000531750] [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: 03/04/2023] [Accepted: 06/08/2023] [Indexed: 07/04/2023]
Abstract
Spina bifida is the most common congenital anomaly of the central nervous system and the first non-fatal fetal lesions to be addressed by fetal intervention. While research in spina bifida has been performed in rodent, nonhuman primate, and canine models, sheep have been a model organism for the disease. This review summarizes the history of development of the ovine model of spina bifida, previous applications, and translation into clinical studies. Initially used by Meuli et al. [Nat Med. 1995;1(4):342-7], fetal myelomeningocele defect creation and in utero repair demonstrated motor function preservation. The addition of myelotomy in this model can reproduce hindbrain herniation malformations, which is the leading cause of mortality and morbidity in humans. Since inception, the ovine models have been validated numerous times as the ideal large animal model for fetal repair, with both locomotive scoring and spina bifida defect scoring adding to the rigor of this model. The ovine model has been used to study different methods of myelomeningocele defect repair, the application of various tissue engineering techniques for neuroprotection and bowel and bladder function. The results of these large animal studies have been translated into human clinical trials including Management of Meningocele Study (MOMS) trial that established current standard of care for prenatal repair of spina bifida defects, and the ongoing trials including the Cellular Therapy for In Utero Repair of Myelomeningocele (CuRe) trial using a stem cell patch for repair. The advancement of these life savings and life-altering therapies began in sheep models, and this notable model continues to be used to further the field including current work with stem cell therapy.
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Affiliation(s)
- Su Yeon Lee
- Division of Pediatric General, Thoracic and Fetal Surgery, University of California Davis Medical Center, Sacramento, California, USA,
- Center for Surgical Bioengineering, University of California Davis, Sacramento, California, USA,
| | - Yimeng Du
- University of California Davis School of Medicine, Sacramento, California, USA
| | - Abd-Elrahman Said Hassan
- Division of Pediatric General, Thoracic and Fetal Surgery, University of California Davis Medical Center, Sacramento, California, USA
- Center for Surgical Bioengineering, University of California Davis, Sacramento, California, USA
| | - Erin Brown
- Division of Pediatric General, Thoracic and Fetal Surgery, University of California Davis Medical Center, Sacramento, California, USA
| | - Payam Saadai
- Division of Pediatric General, Thoracic and Fetal Surgery, University of California Davis Medical Center, Sacramento, California, USA
| | - Shinjiro Hirose
- Division of Pediatric General, Thoracic and Fetal Surgery, University of California Davis Medical Center, Sacramento, California, USA
| | - Aijun Wang
- Center for Surgical Bioengineering, University of California Davis, Sacramento, California, USA
| | - Diana L Farmer
- Division of Pediatric General, Thoracic and Fetal Surgery, University of California Davis Medical Center, Sacramento, California, USA
- Center for Surgical Bioengineering, University of California Davis, Sacramento, California, USA
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Sival DA, Patuszka A, Koszutski T, Heep A, Verbeek RJ. Neurologic Outcome Comparison between Fetal Open-, Endoscopic- and Neonatal-Intervention Techniques in Spina Bifida Aperta. Diagnostics (Basel) 2023; 13:diagnostics13020251. [PMID: 36673061 PMCID: PMC9858470 DOI: 10.3390/diagnostics13020251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/13/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION In spina bifida aperta (SBA), fetal closure of the myelomeningocele (MMC) can have a neuroprotective effect and improve outcomes. In Europe, surgical MMC closure is offered by fetal-open (OSBAR), fetal-endoscopic (FSBAR), and neonatal (NSBAR) surgical techniques. Pediatric neurologists facing the challenging task of counseling the parents may therefore seek objective outcome comparisons. Until now, such data are hardly available. In SBA, we aimed to compare neurologic outcomes between OSBAR, FSBAR, and NSBAR intervention techniques. METHODS We determined intervention-related complications, neuromuscular integrity, and neurologic outcome parameters after OSBAR (n = 17) and FSBAR (n = 13) interventions by age- and lesion-matched comparisons with NSBAR-controls. Neurological outcome parameters concerned: shunt dependency, segmental alterations in muscle ultrasound density (reflecting neuromuscular integrity), segmental motor-, sensory- and reflex conditions, and the likelihood of intervention-related gain in ambulation. RESULTS Compared with NSBAR-controls, fetal intervention is associated with improved neuromuscular tissue integrity, segmental neurological outcomes, reduced shunt dependency, and a higher chance of acquiring ambulation in ≈20% of the operated children. Children with MMC-lesions with a cranial border at L3 revealed the most likely intervention-related motor function gain. The outcome comparison between OSBAR versus FSBAR interventions revealed no significant differences. CONCLUSION In SBA, OSBAR- and FSBAR-techniques achieved similar neuroprotective results. A randomized controlled trial is helpful in revealing and compare ongoing effects by surgical learning curves.
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Affiliation(s)
- Deborah A. Sival
- Department of Pediatric Neurology, Beatrix Children’s Hospital, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands
- Correspondence: ; Tel.: +31-50-3611085; Fax: +31-50-3611787
| | - Agnieszka Patuszka
- Department of Gynaecology, Obstetrics and Oncological Gynaecology, School of Medicine with Division of Dentistry in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
| | - Tomasz Koszutski
- Department of Pediatric Surgery and Urology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-055 Katowice, Poland
| | - Axel Heep
- Department of Pediatrics and Research Center Neurosensory Science, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Germany
| | - Renate J. Verbeek
- Department of Pediatric Neurology, Emma Children’s Hospital, Amsterdam University Medical Centre, 1105 AZ Amsterdam, The Netherlands
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Kohl T. Lifesaving Treatments for the Tiniest Patients-A Narrative Description of Old and New Minimally Invasive Approaches in the Arena of Fetal Surgery. CHILDREN (BASEL, SWITZERLAND) 2022; 10:67. [PMID: 36670618 PMCID: PMC9856479 DOI: 10.3390/children10010067] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/31/2022]
Abstract
Fetal surgery has become a lifesaving reality for hundreds of fetuses each year. The development of a formidable spectrum of safe and effective minimally invasive techniques for fetal interventions since the early 1990s until today has led to an increasing acceptance of novel procedures by both patients and health care providers. From his vast personal experience of more than 20 years as one of the pioneers at the forefront of clinical minimally invasive fetal surgery, the author describes and comments on old and new minimally invasive approaches, highlighting their lifesaving or quality-of-life-improving potential. He provides easy-to-use practical information on how to perform partial amniotic carbon dioxide insufflation (PACI), how to assess lung function in fetuses with pulmonary hypoplasia, how to deal with giant CPAMS, how to insert shunts into fetuses with LUTO and hydrothorax when conventional devices are not available, and how to resuscitate a fetus during fetal cardiac intervention. Furthermore, the author proposes a curriculum for future fetal surgeons, solicits for the centralization of patients, for adequate maternal counseling, for adequate pain management and adequate hygienic conditions during interventions, and last but not least for starting the process of academic recognition of the matured field as an independent specialty. These steps will allow more affected expectant women and their unborn children to gain access to modern minimally invasive fetal surgery and therapy. The opportunity to treat more patients at dedicated centers will also result in more opportunities for the research of rare diseases and conditions, promising even better pre- and postnatal care in the future.
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Affiliation(s)
- Thomas Kohl
- German Center for Fetal Surgery & Minimally-Invasive Therapy (DZFT), Mannheim University Hospital (UMM), Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
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Dural substitutes for spina bifida repair: past, present, and future. Childs Nerv Syst 2022; 38:873-891. [PMID: 35378616 PMCID: PMC9968456 DOI: 10.1007/s00381-022-05486-8] [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: 01/10/2022] [Accepted: 02/28/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE The use of materials to facilitate dural closure during spina bifida (SB) repair has been a highly studied aspect of the surgical procedure. The overall objective of this review is to present key findings pertaining to the success of the materials used in clinical and pre-clinical studies. Additionally, this review aims to aid fetal surgeons as they prepare for open or fetoscopic prenatal SB repairs. METHODS Relevant publications centered on dural substitutes used during SB repair were identified. Important information from each article was extracted including year of publication, material class and sub-class, animal model used in pre-clinical studies, whether the repair was conducted pre-or postnatally, the bioactive agent delivered, and key findings from the study. RESULTS Out of 1,121 publications, 71 were selected for full review. We identified the investigation of 33 different patches where 20 and 63 publications studied synthetic and natural materials, respectively. From this library, 43.6% focused on clinical results, 36.6% focused on pre-clinical results, and 19.8% focused on tissue engineering approaches. Overall, the use of patches, irrespective of material, have shown to successfully protect the spinal cord and most have shown promising survival and neurological outcomes. CONCLUSION While most have shown significant promise as a therapeutic strategy in both clinical and pre-clinical studies, none of the patches developed so far are deemed perfect for SB repair. Therefore, there is an opportunity to develop new materials and strategies that aim to overcome these challenges and further improve the outcomes of SB patients.
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Sanz Cortes M, Chmait RH, Lapa DA, Belfort MA, Carreras E, Miller JL, Brawura Biskupski Samaha R, Sepulveda Gonzalez G, Gielchinsky Y, Yamamoto M, Persico N, Santorum M, Otaño L, Nicolaou E, Yinon Y, Faig-Leite F, Brandt R, Whitehead W, Maiz N, Baschat A, Kosinski P, Nieto-Sanjuanero A, Chu J, Kershenovich A, Nicolaides KH. Experience of 300 cases of prenatal fetoscopic open spina bifida repair: report of the International Fetoscopic Neural Tube Defect Repair Consortium. Am J Obstet Gynecol 2021; 225:678.e1-678.e11. [PMID: 34089698 DOI: 10.1016/j.ajog.2021.05.044] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 05/28/2021] [Accepted: 05/28/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND The multicenter randomized controlled trial Management of Myelomeningocele Study demonstrated that prenatal repair of open spina bifida by hysterotomy, compared with postnatal repair, decreases the need for ventriculoperitoneal shunting and increases the chances of independent ambulation. However, the hysterotomy approach is associated with risks that are inherent to the uterine incision. Fetal surgeons from around the world embarked on fetoscopic open spina bifida repair aiming to reduce maternal and fetal/neonatal risks while preserving the neurologic benefits of in utero surgery to the child. OBJECTIVE This study aimed to report the main obstetrical, perinatal, and neurosurgical outcomes in the first 12 months of life of children undergoing prenatal fetoscopic repair of open spina bifida included in an international registry and to compare these with the results reported in the Management of Myelomeningocele Study and in a subsequent large cohort of patients who received an open fetal surgery repair. STUDY DESIGN All known centers performing fetoscopic spina bifida repair were contacted and invited to participate in a Fetoscopic Myelomeningocele Repair Consortium and enroll their patients in a registry. Patient data entered into this fetoscopic registry were analyzed for this report. Fisher exact test was performed for comparison of categorical variables in the registry with both the Management of Myelomeningocele Study and a post-Management of Myelomeningocele Study cohort. Binary logistic regression analyses were used to assess the registry data for predictors of preterm birth at <30 weeks' gestation, preterm premature rupture of membranes, and need for postnatal cerebrospinal fluid diversion in the fetoscopic registry. RESULTS There were 300 patients in the fetoscopic registry, 78 in the Management of Myelomeningocele Study, and 100 in the post-Management of Myelomeningocele Study cohort. The 3 data sets showed similar anatomic levels of the spinal lesion, mean gestational age at delivery, distribution of motor function compared with upper anatomic level of the lesion in the neonates, and perinatal death. In the Management of Myelomeningocele Study (26.16±1.6 weeks) and post-Management of Myelomeningocele Study cohort (23.3 [20.2-25.6] weeks), compared with the fetoscopic registry group (23.6±1.4 weeks), the gestational age at surgery was lower (comparing fetoscopic repair group with the Management of Myelomeningocele Study; P<.01). After open fetal surgery, all patients were delivered by cesarean delivery, whereas in the fetoscopic registry approximately one-third were delivered vaginally (P<.01). At cesarean delivery, areas of dehiscence or thinning in the scar were observed in 34% of cases in the Management of Myelomeningocele Study, in 49% in the post-Management of Myelomeningocele Study cohort, and in 0% in the fetoscopic registry (P<.01 for both comparisons). At 12 months of age, there was no significant difference in the number of patients requiring treatment for hydrocephalus between those in the fetoscopic registry and the Management of Myelomeningocele Study. CONCLUSION Prenatal and postnatal outcomes up to 12 months of age after prenatal fetoscopic and open fetal surgery repair of open spina bifida are similar. Fetoscopic repair allows for having a vaginal delivery and eliminates the risk of uterine scar dehiscence, therefore protecting subsequent pregnancies of unnecessary maternal and fetal risks.
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Lapa DA, Chmait RH, Gielchinsky Y, Yamamoto M, Persico N, Santorum M, Gil MM, Trigo L, Quintero RA, Nicolaides KH. Percutaneous fetoscopic spina bifida repair: effect on ambulation and need for postnatal cerebrospinal fluid diversion and bladder catheterization. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 58:582-589. [PMID: 33880811 PMCID: PMC9293198 DOI: 10.1002/uog.23658] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 04/08/2021] [Accepted: 04/08/2021] [Indexed: 06/02/2023]
Abstract
OBJECTIVE A trial comparing prenatal with postnatal open spina bifida (OSB) repair established that prenatal surgery was associated with better postnatal outcome. However, in the trial, fetal surgery was carried out through hysterotomy. Minimally invasive approaches are being developed to mitigate the risks of open maternal-fetal surgery. The objective of this study was to investigate the impact of a novel neurosurgical technique for percutaneous fetoscopic repair of fetal OSB, the skin-over-biocellulose for antenatal fetoscopic repair (SAFER) technique, on long-term postnatal outcome. METHODS This study examined descriptive data for all patients undergoing fetoscopic OSB repair who had available 12- and 30-month follow-up data for assessment of need for cerebrospinal fluid (CSF) diversion and need for bladder catheterization and ambulation, respectively, from eight centers that perform prenatal OSB repair via percutaneous fetoscopy using a biocellulose patch between the neural placode and skin/myofascial flap, without suture of the dura mater (SAFER technique). Univariate and multivariate logistic regression analyses were used to examine the effect of different factors on need for CSF diversion at 12 months and ambulation and need for bladder catheterization at 30 months. Potential cofactors included gestational age at fetal surgery and delivery, preoperative ultrasound findings of anatomical level of the lesion, cerebral lateral ventricular diameter, lesion type and presence of bilateral talipes, as well as postnatal findings of CSF leakage at birth, motor level, presence of bilateral talipes and reversal of hindbrain herniation. RESULTS A total of 170 consecutive patients with fetal OSB were treated prenatally using the SAFER technique. Among these, 103 babies had follow-up at 12 months of age and 59 had follow-up at 30 months of age. At 12 months of age, 53.4% (55/103) of babies did not require ventriculoperitoneal shunt or third ventriculostomy. At 30 months of age, 54.2% (32/59) of children were ambulating independently and 61.0% (36/59) did not require chronic intermittent catheterization of the bladder. Multivariate logistic regression analysis demonstrated that significant prediction of need for CSF diversion was provided by lateral ventricular size and type of lesion (myeloschisis). Significant predictors of ambulatory status were prenatal bilateral talipes and anatomical and functional motor levels of the lesion. There were no significant predictors of need for bladder catheterization. CONCLUSION Children who underwent prenatal OSB repair via the percutaneous fetoscopic SAFER technique achieved long-term neurological outcomes similar to those reported in the literature after hysterotomy-assisted OSB repair. © 2021 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- D. A. Lapa
- Fetal Therapy Team CoordinatorHospital Infantil SabaraSão PauloBrazil
- Fetal Therapy GroupHospital Israelita Albert EinsteinSão PauloBrazil
| | - R. H. Chmait
- Los Angeles Fetal Surgery, Department of Obstetrics and GynecologyKeck School of Medicine, University of Southern CaliforniaLos AngelesCAUSA
| | - Y. Gielchinsky
- Fetal Therapy, Helen Schneider Hospital for WomenRabin Medical CenterPetah TikvaIsrael
| | | | - N. Persico
- Department of Clinical Sciences and Community HealthUniversity of MilanMilanItaly
- Fetal Medicine and Surgery Service, Fondazione IRCCS Ca' Granda, Ospedale Maggiore PoliclinicoMilanItaly
| | - M. Santorum
- Fetal Medicine Research InstituteKing's College HospitalLondonUK
| | - M. M. Gil
- Department of Obstetrics and GynecologyHospital Universitario de TorrejónMadridSpain
- School of MedicineUniversidad Francisco de VitoriaMadridSpain
| | - L. Trigo
- Fetal Therapy GroupHospital Israelita Albert EinsteinSão PauloBrazil
- BCNatal Fetal Medicine Research CenterBarcelonaSpain
| | | | - K. H. Nicolaides
- Fetal Medicine Research InstituteKing's College HospitalLondonUK
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Sbragia L, da Costa KM, Nour ALA, Ruano R, Santos MV, Machado HR. State of the art in translating experimental myelomeningocele research to the bedside. Childs Nerv Syst 2021; 37:2769-2785. [PMID: 34333685 DOI: 10.1007/s00381-021-05299-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 07/18/2021] [Indexed: 11/30/2022]
Abstract
Myelomeningocele (MMC), the commonest type of spina bifida (SB), occurs due to abnormal development of the neural tube and manifest as failure of the complete fusion of posterior arches of the spinal column, leading to dysplastic growth of the spinal cord and meninges. It is associated with several degrees of motor and sensory deficits below the level of the lesion, as well as skeletal deformities, bladder and bowel incontinence, and sexual dysfunction. These children might develop varying degrees of neuropsychomotor delay, partly due to the severity of the injuries that affect the nervous system before birth, partly due to the related cerebral malformations (notably hydrocephalus-which may also lead to an increase in intracranial pressure-and Chiari II deformity). Traditionally, MMC was repaired surgically just after birth; however, intrauterine correction of MMC has been shown to have several potential benefits, including better sensorimotor outcomes (since exposure to amniotic fluid and its consequent deleterious effects is shortened) and reduced rates of hydrocephalus, among others. Fetal surgery for myelomeningocele, nevertheless, would not have been made possible without the development of experimental models of this pathological condition. Hence, the aim of the current article is to provide an overview of the animal models of MMC that were used over the years and describe how this knowledge has been translated into the fetal treatment of MMC in humans.
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Affiliation(s)
- Lourenço Sbragia
- Division of Pediatric Surgery - Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Karina Miura da Costa
- Division of Pediatric Surgery - Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Antonio Landolffi Abdul Nour
- Division of Pediatric Surgery - Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rodrigo Ruano
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Texas, Houston, TX, USA
| | - Marcelo Volpon Santos
- Division of Pediatric Neurosurgery - Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Hélio Rubens Machado
- Division of Pediatric Neurosurgery - Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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9
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Flanders TM, Madsen PJ, Pisapia JM, Hudgins ED, Mackell CM, Alexander EE, Moldenhauer JS, Zarnow DM, Flake AW, Adzick NS, Heuer GG. Improved Postoperative Metrics with Modified Myofascial Closure in Fetal Myelomeningocele Repair. Oper Neurosurg (Hagerstown) 2021; 18:158-165. [PMID: 31222267 DOI: 10.1093/ons/opz115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 01/21/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The effect of modifications in fetal myelomeningocele (fMMC) closure techniques has not been extensively studied. OBJECTIVE To study the effect of a modified closure technique on fMMC postnatal patient outcomes: hydrocephalus, hindbrain herniation, and cyst development. METHODS We performed single-center retrospective study of a subset of post-MOMS (Management of Myelomeningocele Study) trial patients who underwent fMMC closure. After January 2015, the fetal myofascial closure technique was modified. Needlepoint monopolar cautery was used to raise dural lined myofascial flaps to create a more robust closure. Outcomes between the pre- and postmodification groups were compared with regard to hindbrain herniation, hydrocephalus, and cyst development. Families who transitioned care to local institutions were contacted via telephone for outcome information. RESULTS From January 2011 to May 2016, data were reviewed from 119 fMMC closure patients. Patients without full follow-up data were excluded from the final analysis. Cerebrospinal fluid diversion was seen in 32 of 74 patients with the standard technique compared to 14 of 45 with the modified closure and was significantly decreased in postmodification when compared to that of the MOMS trial (P = .01). Hindbrain herniation resolution was significantly decreased in both the pre- and postmodification groups compared to that of the MOMS trial (P < .01). Prior to January 2015 with standard closure, 23 cysts required resection whereas no cysts required resection in the modified repair group (P < .01). CONCLUSION Modified myofascial closure for fMMC closure is safe and feasible. The new approach reflects a decreased rate of cyst development requiring surgical resection, and a trend for improved rates of hindbrain herniation and hydrocephalus.
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Affiliation(s)
- Tracy M Flanders
- Division of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Peter J Madsen
- Division of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Jared M Pisapia
- Division of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Eric D Hudgins
- Division of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Catherine M Mackell
- The Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Erin E Alexander
- Division of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Julie S Moldenhauer
- The Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Deborah M Zarnow
- The Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Alan W Flake
- The Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - N Scott Adzick
- The Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Division of Pediatric General, Thoracic, and Fetal Surgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Gregory G Heuer
- Division of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,The Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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10
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Joyeux L, Danzer E, De Bie F, Russo FM, Javaux A, Peralta CFA, De Salles AAF, Pastuszka A, Olejek A, Van Mieghem T, De Coppi P, Moldenhauer J, Whitehead WE, Belfort MA, Lapa DA, Acacio GL, Devlieger R, Hirose S, Farmer DL, Van Calenbergh F, Adzick NS, Johnson MP, Deprest J. Reply. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2020; 56:634-635. [PMID: 33001498 DOI: 10.1002/uog.23104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- L Joyeux
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Women and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
| | - E Danzer
- Center for Fetal Diagnosis and Treatment, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - F De Bie
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Center for Fetal Diagnosis and Treatment, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - F M Russo
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Women and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
| | - A Javaux
- Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
| | - C F A Peralta
- Department of Fetal Medicine, The Heart Hospital, University of São Paulo, São Paulo, Brazil
- Department of Fetal Medicine, Pro Matre Hospital, São Paulo, Brazil
| | - A A F De Salles
- Neuroscience Institute, The Heart Hospital, University of São Paulo, São Paulo, Brazil
| | - A Pastuszka
- Department of Descriptive and Topografic Anatomy, Medical University of Silesia, Katowice, Poland
- Division of Dentistry, School of Medicine, Medical University of Silesia, Zabrze, Poland
| | - A Olejek
- Department of Gynecology, Obstetrics and Gynecologic Oncology, Medical University of Silesia, Bytom, Poland
| | - T Van Mieghem
- Department of Obstetrics and Gynecology, Sinai Health System, Mount Sinai Hospital, Toronto, ON, Canada
| | - P De Coppi
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Women and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
- Specialist Neonatal and Paediatric Surgery Unit, Great Ormond Street Hospital, University College London Hospitals NHS Foundation Trust, London, UK
| | - J Moldenhauer
- Center for Fetal Diagnosis and Treatment, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - W E Whitehead
- Department of Neurosurgery, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Fetal Center, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - M A Belfort
- Texas Children's Fetal Center, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - D A Lapa
- Fetal Therapy Center, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - G L Acacio
- Department of Obstetrics and Gynecology, Taubate University, São Paulo, Brazil
| | - R Devlieger
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Women and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
| | - S Hirose
- Fetal Care and Treatment Center, UC Davis Children's Hospital, Sacramento, CA, USA
| | - D L Farmer
- Fetal Care and Treatment Center, UC Davis Children's Hospital, Sacramento, CA, USA
| | - F Van Calenbergh
- Department of Neurosurgery, University Hospitals Leuven, Leuven, Belgium
| | - N S Adzick
- Center for Fetal Diagnosis and Treatment, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - M P Johnson
- Center for Fetal Diagnosis and Treatment, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J Deprest
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Women and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
- Institute of Women's Health, University College London Hospitals, London, UK
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11
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Kohl T. Minimally invasive fetoscopic surgery for spina bifida aperta: learning and doing. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2020; 56:633. [PMID: 33001493 DOI: 10.1002/uog.23103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Affiliation(s)
- T Kohl
- German Center for Fetal Surgery & Minimally-Invasive Therapy (DZFT), University Hospital of Mannheim, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
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12
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Bardill JR, Park D, Marwan AI. Improved Coverage of Mouse Myelomeningocele With a Mussel Inspired Reverse Thermal Gel. J Surg Res 2020; 251:262-274. [PMID: 32197182 DOI: 10.1016/j.jss.2020.01.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/09/2020] [Accepted: 01/31/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Myelomeningocele (MMC) is an open neural tube defect of the spinal column. Our laboratory previously introduced a reverse thermal gel (RTG) as the first in situ forming patch for in utero MMC application. To overcome the challenges of anchoring the RTG in the wet amniotic environment to improve MMC coverage, we modified the RTG to mimic the underwater adhesive properties of mussels. We have separated this study into three separate hypotheses-based components: CONCLUSIONS: The DRTG demonstrates increased elasticity, cellular scaffolding properties, and improved MMC coverage in the Grhl3 mouse model. Future studies will be translated to the preclinical ovine model to evaluate this novel gel.
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Affiliation(s)
- James R Bardill
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, Aurora, Colorado; Division of Pediatric Surgery, Department of Surgery, University of Colorado Denver Anschutz Medical Campus, Aurora, Colorado
| | - Daewon Park
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, Aurora, Colorado.
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13
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Steele JW, Bayliss S, Bayliss J, Lin YL, Wlodarczyk BJ, Cabrera RM, Asfaw YG, Cummings TJ, Finnell RH, George TM. Heritable spina bifida in sheep: A potential model for fetal repair of myelomeningocele. J Pediatr Surg 2020; 55:475-481. [PMID: 31301886 PMCID: PMC6935438 DOI: 10.1016/j.jpedsurg.2019.06.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 05/28/2019] [Accepted: 06/23/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND/PURPOSE In 2004, a heritable occurrence of spina bifida was reported in sheep on a farm in the United States. We maintained and characterized the spina bifida phenotype in this flock to assess its potential as an alternative surgical model. METHODS A breeding strategy was developed in which the sheep were crossed to maintain or increase the occurrence of spina bifida. Measurements and observations were recorded regarding lesion size, birthweight, ambulatory capacity, or urological function, and necropsies were performed on spina bifida afflicted lambs in conjunction with magnetic resonance imaging to determine the character of the spina bifida defects and assess the presence of Chiari-like malformations or hydrocephalus. RESULTS The defects were observed to be more prevalent in ram lambs, and the rate of spina bifida per litter could be increased through backcrossing or by selection of a productive ewe breed. The lambs displayed a range of ambulatory and urological deficits which could be used to evaluate new fetal repair methodologies. Finally, affected lambs were shown to demonstrate severe Chiari malformations and hydrocephalus. CONCLUSIONS We have determined that use of these sheep as a natural source for spina bifida fetuses is feasible and could supplement the deficits of current sheep models for myelomeningocele repair. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- John W. Steele
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030,Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712
| | | | | | - Ying Linda Lin
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030.
| | - Bogdan J. Wlodarczyk
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030
| | - Robert M. Cabrera
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030
| | - Yohannes G. Asfaw
- Division of Laboratory Animal Resources, Duke University Medical Center, Durham, NC 27710
| | - Thomas J. Cummings
- Department of Pathology, Duke University Medical Center, Durham, NC 27710
| | - Richard H. Finnell
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030
| | - Timothy M. George
- Department of Neurosurgery/Pediatric Neurosurgery, Dell Medical School, Dell Children’s Medical Center, Austin, TX 78712
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14
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Spinal Dysraphia, Chiari 2 Malformation, Unified Theory, and Advances in Fetoscopic Repair. Neuroimaging Clin N Am 2019; 29:357-366. [PMID: 31256859 DOI: 10.1016/j.nic.2019.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fetal spina bifida, the most common nonlethal birth defect of the central nervous system, results in substantial neurologic morbidity. The unified theory describes the complex relationship between local spinal lesions and development of Chiari 2 malformation, contributing to hydrocephalus. Prenatal ultrasonography reliably allows diagnosis, but fetal MR imaging is an important complement to identify additional brain abnormalities. Fetal surgery improves neurologic and motor outcomes, but various approaches, either open hysterotomy or minimally invasive to the uterus, carry substantial obstetric risks. Optimization of the fetoscopic approach aims to minimize maternal and obstetric risks, but data regarding longer-term outcomes are awaited.
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Abstract
INTRODUCTION Spina bifida is the most common non-lethal congenital birth defect of the central nervous system that causes chronic disability due to the combined effects of local nerve damage and the sequelae of non-communicating hydrocephalus. This abnormality can be identified early in gestation and the damage can be progressive over the course of pregnancy. Advances in fetal treatment have made minimally invasive prenatal surgery a realistic consideration for spina bifida in order to improve the outcome for children affected this condition. EVIDENCE ACQUISITION Prenatal surgery for spina bifida via open fetal surgery with hysterotomy decreases the rate of ventriculoperitoneal shunt placement and improves motor function compared to standard postnatal surgery. Maternal risks of open fetal surgery are primarily related to complications of the hysterotomy including thinning or rupture that begins in the index pregnancy but persists for every future pregnancy. Minimizing maternal risks is the largest impetus to explore and optimize a minimally invasive fetoscopic alternative. Techniques vary from using a complete percutaneous approach to open fetoscopy, which requires laparotomy but is minimally invasive to the uterus. This allows vaginal delivery at term and no scar complications are reported thus far. Fetal short-term neurosurgical outcomes compare favorably with improvement in hindbrain herniation >70% and decreased need for treatment for hydrocephalus between 40-45% after prenatal surgery performed either fetoscopically or through open fetal surgery. EVIDENCE SYNTHESIS Maternal obstetric outcomes are superior for fetoscopic spina bifida repair compared to open fetal surgery and avoids the ongoing risk in future pregnancy. Neonatal and infant benefits appear equivalent. The open fetoscopic approach minimizes the risk of ruptured membranes and subsequent preterm delivery as opposed to a completely percutaneous procedure. International collaboration is ongoing to share experience and assess long term treatment effects. CONCLUSIONS Continued refinement of a minimally invasive strategy for prenatal treatment of spina bifida is necessary to maximize benefits to the child and further minimize maternal risks and preterm birth.
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Affiliation(s)
- Jena L Miller
- Department of Gynecology and Obstetrics, The Johns Hopkins Center for Fetal Therapy, Johns Hopkins University, Baltimore, MD, USA -
| | - Mari L Groves
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University, Baltimore, MD, USA
| | - Ahmet A Baschat
- Department of Gynecology and Obstetrics, The Johns Hopkins Center for Fetal Therapy, Johns Hopkins University, Baltimore, MD, USA
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Shanmuganathan M, Sival DA, Eastwood KA, Morris K, Cartmill J, Heep A, Bohosiewicz J, Pastuszka A, Hunter A, Ali A, McConnell R, Crimmins D, Malone F, Bailie C, Deprest J, McKillop C, Alfirevic Z, McAuliffe F, Ong S. Prenatal surgery for spina bifida: a therapeutic dilemma. Proceedings of the SHINE conference, Belfast. Ir J Med Sci 2017; 187:713-718. [DOI: 10.1007/s11845-017-1709-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 10/24/2017] [Indexed: 11/27/2022]
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Snowise S, Mann L, Morales Y, Moise KJ, Johnson A, Fletcher S, Grill RJ, Tseng SCG, Papanna R. Cryopreserved human umbilical cord versus biocellulose film for prenatal spina bifida repair in a physiologic rat model. Prenat Diagn 2017; 37:473-481. [PMID: 28295455 DOI: 10.1002/pd.5035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 02/28/2017] [Accepted: 03/05/2017] [Indexed: 11/11/2022]
Abstract
BACKGROUND Prenatal spina bifida (SB) repair with a regenerative patch may improve neurological outcomes by decreasing inflammatory scarring. OBJECTIVE This study aims to compare cryopreserved human umbilical cord (HUC) and biocellulose film (BCF) patches sutured over SB lesions for regeneration of native cells and inflammatory response. STUDY DESIGN Sprague-Dawley rats were gavaged with retinoic acid (RA) on embryonic day 10 to induce SB. Hysterotomy was performed on embryonic day 20 and on HUC or BCF patches sutured over the defect. Pups were harvested 30 to 34 h later, and hematoxylin and eosin staining and Trichrome staining assessed basic cellular migration. Immunohistochemistry demonstrated the exact nature of the cellular migration. Patches and surrounding exudates were evaluated with microscopy and cells quantified. RESULTS Histology showed cellular migration with all HUC patches compared with none with BCF patches. Epithelial cells were noted migrating over the dorsal HUC surface, astrocytes were noted along the HUC surface adjacent to the lesion, and endothelial cells were noted within the HUC. HUC patches showed minimal inflammatory cells. Exudates surrounding the HUC patches had fewer inflammatory cells than exudates around BCF patches. CONCLUSION HUC promotes cellular migration of native cells with minimal inflammatory response compared with BCF. HUC may be the superior patch material for prenatal SB repair. © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Saul Snowise
- Department of Obstetrics, Gynecology and Reproductive Medicine, Division of Maternal-Fetal Medicine, UTHealth School of Medicine and the Fetal Center at Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Lovepreet Mann
- Department of Obstetrics, Gynecology and Reproductive Medicine, Division of Maternal-Fetal Medicine, UTHealth School of Medicine and the Fetal Center at Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Yisel Morales
- Department of Obstetrics, Gynecology and Reproductive Medicine, Division of Maternal-Fetal Medicine, UTHealth School of Medicine and the Fetal Center at Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Kenneth J Moise
- Department of Obstetrics, Gynecology and Reproductive Medicine, Division of Maternal-Fetal Medicine, UTHealth School of Medicine and the Fetal Center at Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Anthony Johnson
- Department of Obstetrics, Gynecology and Reproductive Medicine, Division of Maternal-Fetal Medicine, UTHealth School of Medicine and the Fetal Center at Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Stephen Fletcher
- The Department of Pediatrics, Division of Pediatric Neurosurgery, UTHealth School of Medicine and the Fetal Center at Children's Memorial Hermann Hospital, Houston, TX, USA.,Department of Pediatric Surgery, UTHealth School of Medicine and the Fetal Center at Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Raymond J Grill
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, Jackson, MS, USA
| | | | - Ramesha Papanna
- Department of Obstetrics, Gynecology and Reproductive Medicine, Division of Maternal-Fetal Medicine, UTHealth School of Medicine and the Fetal Center at Children's Memorial Hermann Hospital, Houston, TX, USA
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Pedreira DAL, Reece EA, Chmait RH, Kontopoulos EV, Quintero RA. Fetoscopic repair of spina bifida: safer and better? ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2016; 48:141-147. [PMID: 27273812 PMCID: PMC5113790 DOI: 10.1002/uog.15987] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 05/31/2016] [Accepted: 06/02/2016] [Indexed: 05/31/2023]
Affiliation(s)
- D A L Pedreira
- Fetal Therapy Program, Albert Einstein Hospital, São Paulo, Brazil
| | - E A Reece
- Office of the Dean and Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - R H Chmait
- Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - E V Kontopoulos
- Department of Obstetrics and Gynecology, University of Missouri, Kansas City, MO, USA
- Elizabeth J. Ferrell Fetal Health Center, Fetal Therapy, Children's Mercy Hospital, Kansas City, MO, USA
| | - R A Quintero
- Elizabeth J. Ferrell Fetal Health Center, Fetal Therapy, Children's Mercy Hospital, Kansas City, MO, USA
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Pedreira DA, Zanon N, Nishikuni K, Moreira de Sá RA, Acacio GL, Chmait RH, Kontopoulos EV, Quintero RA. Endoscopic surgery for the antenatal treatment of myelomeningocele: the CECAM trial. Am J Obstet Gynecol 2016; 214:111.e1-111.e11. [PMID: 26386383 DOI: 10.1016/j.ajog.2015.09.065] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 08/06/2015] [Accepted: 09/09/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND A recent randomized clinical trial named Management of Myelomeningocele Study (MOMS trial) showed that prenatal correction of open spina bifida (OSB) via open fetal surgery was associated with improved infant neurological outcomes relative to postnatal repair, but at the expense of increased maternal morbidity. OBJECTIVE We sought to report the final results of our phase I trial (Cirurgia Endoscópica para Correção Antenatal da Meningomielocele [CECAM]) on the feasibility, safety, potential benefits, and side effects of the fetoscopic treatment of OSB using our unique surgical technique. STUDY DESIGN Ten consecutive pregnancies with lumbosacral OSB were enrolled in the study. Surgeries were performed percutaneously under general anesthesia with 3 ports and partial carbon dioxide insufflation. After appropriate surgical positioning of the fetus, the neuroplacode was released with scissors and the skin was undermined to place a biocellulose patch over the lesion. The skin was closed over the patch using a single running stitch. Preoperative, postoperative, and postnatal magnetic resonance imaging were performed to assess hindbrain herniation. Neurodevelopmental evaluation was performed before discharge and at 3, 6, and 12 months. All cases were delivered by cesarean delivery, at which time the uterus was assessed for evidence of thinning or dehiscence. RESULTS The median gestational age at the time of surgery was 27 weeks (range 25-28 weeks). Endoscopic repair was completed in 8 of 10 fetuses. Two cases were unsuccessful due to loss of uterine access. The mean gestational age at birth was 32.4 weeks with a mean latency of 5.6 weeks between surgery and delivery (range 2-8 weeks). There was 1 fetal and 1 neonatal demise, and 1 unsuccessful case underwent postnatal repair. Of the 7 infants available for analysis, complete reversal of hindbrain herniation occurred in 6 of 7 babies. Three babies required ventriculoperitoneal shunting or third ventriculostomy. Functional motor level was the same or better than the anatomical level in 6 of 7 cases. There was no significant maternal morbidity and no evidence of myometrial thinning or dehiscence. However, surgeries were complicated by premature rupture of membrane and prematurity. CONCLUSION Our study suggests that the antenatal treatment of OSB using a fetoscopic approach and our unique surgical technique can result in a watertight seal, reversal of the hindbrain herniation, and better than expected motor function. Our technique differs substantially from the classic repair of OSB used in prior open fetal surgery and fetoscopic studies, in which the dura mater is dissected and the defect is closed in multiple layers. Instead, we use a biocellulose patch placed over the lesion and simple closure of the skin. As such, our technique is an alternative to the current paradigms in the antenatal treatment of OSB. Our clinical outcomes are in line with the results of our extensive prior animal work. Maternal benefits of our approach and technique include minimal morbidity and no myometrial legacy. Current limitations of the approach include potential loss of access, premature rupture of membranes, and attendant prematurity. Phase II trials are needed to prevent these complications and to further assess the risks and benefits of our distinct surgical approach and technique.
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Bevilacqua NS, Pedreira DAL. Fetoscopy for meningomyelocele repair: past, present and future. EINSTEIN-SAO PAULO 2015; 13:283-9. [PMID: 26154549 PMCID: PMC4943825 DOI: 10.1590/s1679-45082015rw3032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 03/13/2015] [Indexed: 01/18/2023] Open
Abstract
Meningomyelocele is a malformation with high prevalence, and one of its main comorbidities is Arnold-Chiari malformation type II. The intrauterine repair of this defect has been studied to reduce the progressive spinal cord damage during gestation. The purpose of the present review was to describe the evolution of fetal surgery for meningomyelocele repair. Searches on PubMed database were conducted including articles published in the last 10 years. Twenty-seven articles were selected, 16 experimental studies and 11 studies in humans. A recent study demonstrated that the fetal correction results in better prognosis of neurological and psychomotor development, but open surgery, which has being used widely, has considerable maternal risks. Studies in animal and human models show that the endoscopic approach is feasible and leads to lower maternal morbidity rates. Two endoscopic techniques are currently under assessment - one in Germany and another in Brazil, and we believe that the endoscopic approach will be the future technique for prenatal repair of this defect.
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21
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Kohl T. Percutaneous minimally invasive fetoscopic surgery for spina bifida aperta. Part I: surgical technique and perioperative outcome. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2014; 44:515-524. [PMID: 24891102 DOI: 10.1002/uog.13430] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 05/08/2014] [Accepted: 05/27/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVES To analyze the current technical approach of percutaneous minimal-access fetoscopic closure of spina bifida aperta (SBA) and provide an overview of its development in ovine and human fetuses. METHODS Minimal-access percutaneous fetoscopic closure of SBA was performed at the German Center for Fetal Surgery & Minimal-access Therapy (DZFT) in 51 human fetuses at 21.0-29.1 weeks of gestation (mean age, 23.7 weeks). Various parameters of surgical relevance for the success and safety of the procedure and the early perioperative outcome were analyzed retrospectively. In addition, information from the early clinical cases was examined to determine how this shaped development of the approach. RESULTS Percutaneous minimal-access fetoscopic closure of SBA was performed with a high rate of technical success, regardless of placental or fetal position. All fetuses survived surgery, but there was one very early preterm delivery 1 week after the procedure and this neonate died immediately, from early postoperative chorioamnionitis. Of the 50 surviving fetuses, 44 (88%) were delivered at or beyond 30 weeks and 25 (50%) at or beyond 34 weeks of gestation. There was one neonatal death from an uinsuspected case of trisomy 13 and two infant deaths from Chiari-II malformation. CONCLUSIONS Following an adequate learning curve, minimal-access fetoscopic surgery for fetal spina bifida can be performed with a high rate of technical success, regardless of placental position.
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Affiliation(s)
- T Kohl
- German Center for Fetal Surgery & Minimally Invasive Therapy (DZFT), University of Giessen-Marburg, Giessen, Germany
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22
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Watanabe M, Kim AG, Flake AW. Tissue Engineering Strategies for Fetal Myelomeningocele Repair in Animal Models. Fetal Diagn Ther 2014; 37:197-205. [DOI: 10.1159/000362931] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Myelomeningocele (MMC), the most severe form of spina bifida, is a common and devastating malformation. Over two decades of experimental work in animal models have led to the development and clinical application of open fetal surgery for the repair of the MMC defect. This approach offers improved neurofunctional outcomes and is now a clinical option for the management of prenatally diagnosed MMC in selected patients. However, there are still opportunities for further improvement in the prenatal treatment of MMC. A less invasive approach would allow for an application earlier in gestation, with a reduction in maternal and fetal risks and the potential for reduced neurological injury. Tissue engineering offers a realistic and appealing alternative approach for the prenatal treatment of MMC. This review discusses the rationale for tissue engineering in MMC, addresses recent experimental progress and describes potential future directions.
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Pedreira DAL, Zanon N, de Sá RAM, Acacio GL, Ogeda E, Belem TMLOU, Chmait RH, Kontopoulos E, Quintero RA. Fetoscopic single-layer repair of open spina bifida using a cellulose patch: preliminary clinical experience. J Matern Fetal Neonatal Med 2014; 27:1613-9. [DOI: 10.3109/14767058.2013.871701] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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