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Fu F, Chen C, Du K, Li LS, Li R, Lei TY, Deng Q, Wang D, Yu QX, Yang X, Han J, Pan M, Zhen L, Zhang LN, Li J, Li FT, Zhang YL, Jing XY, Li FC, Li DZ, Liao C. Ndufa4 Regulates the Proliferation and Apoptosis of Neurons via miR-145a-5p/Homer1/Ccnd2. Mol Neurobiol 2023; 60:2986-3003. [PMID: 36763283 PMCID: PMC10122635 DOI: 10.1007/s12035-023-03239-5] [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: 08/05/2021] [Accepted: 01/09/2023] [Indexed: 02/11/2023]
Abstract
The Dandy-Walker malformation (DWM) is characterized by neuron dysregulation in embryonic development; however, the regulatory mechanisms associated with it are unclear. This study aimed to investigate the role of NADH dehydrogenase 1 alpha subcomplex 4 (NDUFA4) in regulating downstream signaling cascades and neuronal proliferation and apoptosis. Ndufa4 overexpression promoted the proliferation of neurons and inhibited their apoptosis in vitro, which underwent reverse regulation by the Ndufa4 short hairpin RNAs. Ndufa4-knockout (KO) mice showed abnormal histological alterations in the brain tissue, in addition to impaired spatial learning capacity and exploratory activity. Ndufa4 depletion altered the microRNA expressional profiles of the cerebellum: Ndufa4 inhibited miR-145a-5p expression both in the cerebellum and neurons. miR-145a-5p inhibited the proliferation of neurons and promoted their apoptosis. Ndufa4 promoted and miR-145a-5p inhibited the expression of human homer protein homolog 1 and cyclin D2 in neurons. Thus, Ndufa4 promotes the proliferation of neurons and inhibits their apoptosis by inhibiting miR-145a-5p, which directly targets and inhibits the untranslated regions of Homer1 and Ccnd2 expression.
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Affiliation(s)
- Fang Fu
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Chen Chen
- Department of Respirator, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, China
| | - Kun Du
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Lu-Shan Li
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Ru Li
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Ting-Ying Lei
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Qiong Deng
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Dan Wang
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Qiu-Xia Yu
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Xin Yang
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Jin Han
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Min Pan
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Li Zhen
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Li-Na Zhang
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Jian Li
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Fa-Tao Li
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Yong-Ling Zhang
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Xiang-Yi Jing
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Fu-Cheng Li
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Dong-Zhi Li
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China
| | - Can Liao
- Department of Prenatal Diagnostic Centre, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No.9 of Jinsui Road of Guangzhou, Guangzhou, 510623, Guangdong, China.
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Haldipur P, Millen KJ, Aldinger KA. Human Cerebellar Development and Transcriptomics: Implications for Neurodevelopmental Disorders. Annu Rev Neurosci 2022; 45:515-531. [PMID: 35440142 PMCID: PMC9271632 DOI: 10.1146/annurev-neuro-111020-091953] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Developmental abnormalities of the cerebellum are among the most recognized structural brain malformations in human prenatal imaging. Yet reliable information regarding their cause in humans is sparse, and few outcome studies are available to inform prognosis. We know very little about human cerebellar development, in stark contrast to the wealth of knowledge from decades of research on cerebellar developmental biology of model organisms, especially mice. Recent studies show that multiple aspects of human cerebellar development significantly differ from mice and even rhesus macaques, a nonhuman primate. These discoveries challenge many current mouse-centric models of normal human cerebellar development and models regarding the pathogenesis of several neurodevelopmental phenotypes affecting the cerebellum, including Dandy-Walker malformation and medulloblastoma. Since we cannot model what we do not know, additional normative and pathological human developmental data are essential, and new models are needed.
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Affiliation(s)
- Parthiv Haldipur
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA;
| | - Kathleen J Millen
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA; .,Department of Pediatrics, Division of Medical Genetics, University of Washington School of Medicine, Seattle, Washington, USA
| | - Kimberly A Aldinger
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA;
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Alsalamah RK, Alenezi MM, Alsaab F. Dandy-Walker syndrome with bilateral choanal atresia: A case report. Int J Surg Case Rep 2021; 90:106702. [PMID: 34953427 PMCID: PMC8715065 DOI: 10.1016/j.ijscr.2021.106702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/08/2021] [Accepted: 12/14/2021] [Indexed: 11/01/2022] Open
Abstract
INTRODUCTION Dandy-Walker syndrome is a rare congenital brain malformation characterized by cerebellar vermis agenesis or hypoplasia, cystic dilatation of the fourth ventricle and a large posterior fossa causing upward displacement of tentorium and torcula. In this paper, we present a case of bilateral choanal atresia with Dandy-Walker Syndrome in a female newborn. CASE PRESENTATION We present a case of a female patient who was born at 38th weeks of gestation via emergency cesarean section due to non-reassuring cardiotocography and abnormal antenatal ultrasounds findings. The imaging revealed the presence of Dandy-walker malformation. The patient presented with cyanosis and respiratory distress. Bedside flexible nasoendoscopy revealed bilateral choanal atresia which is confirmed by computed tomography of sinuses. Endoscopic bilateral choanal atresia repair was performed. On postoperative follow up, nasal endoscopy showed bilateral intact flap and patent neochoana. DISCUSSION AND CONCLUSION Dandy-Walker syndrome is a congenital disorder that can be diagnosed prenatally. The syndrome is associated with multiple anomalies. However, there are few published reports of bilateral choanal atresia in Dandy-Walker Syndrome. Bilateral choanal atresia is considered a life-threatening condition in newborns that requires early surgical intervention.
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Affiliation(s)
- Raghad K Alsalamah
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.
| | - Mazyad M Alenezi
- Department of Otolaryngology Head and Neck Surgery, College of Medicine, Qassim University, Qassim, Saudi Arabia
| | - Fahad Alsaab
- Department of Pediatric Surgery, Department of Otolaryngology Head and Neck Surgery, Ministry of the National Guard - Health Affairs, King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
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Park KB, Chapman T, Aldinger KA, Mirzaa GM, Zeiger J, Beck A, Glass IA, Hevner RF, Jansen AC, Marshall DA, Oegema R, Parrini E, Saneto RP, Curry CJ, Hall JG, Guerrini R, Leventer RJ, Dobyns WB. The spectrum of brain malformations and disruptions in twins. Am J Med Genet A 2020; 185:2690-2718. [PMID: 33205886 DOI: 10.1002/ajmg.a.61972] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/27/2020] [Accepted: 10/24/2020] [Indexed: 12/12/2022]
Abstract
Twins have an increased risk for congenital malformations and disruptions, including defects in brain morphogenesis. We analyzed data on brain imaging, zygosity, sex, and fetal demise in 56 proband twins and 7 less affected co-twins with abnormal brain imaging and compared them to population-based data and to a literature series. We separated our series into malformations of cortical development (MCD, N = 39), cerebellar malformations without MCD (N = 13), and brain disruptions (N = 11). The MCD group included 37/39 (95%) with polymicrogyria (PMG), 8/39 (21%) with pia-ependymal clefts (schizencephaly), and 15/39 (38%) with periventricular nodular heterotopia (PNH) including 2 with PNH but not PMG. Cerebellar malformations were found in 19 individuals including 13 with a cerebellar malformation only and another 6 with cerebellar malformation and MCD. The pattern varied from diffuse cerebellar hypoplasia to classic Dandy-Walker malformation. Brain disruptions were seen in 11 individuals with hydranencephaly, porencephaly, or white matter loss without cysts. Our series included an expected statistically significant excess of monozygotic (MZ) twin pairs (22/41 MZ, 54%) compared to population data (482/1448 MZ, 33.3%; p = .0110), and an unexpected statistically significant excess of dizygotic (DZ) twins (19/41, 46%) compared to the literature cohort (1/46 DZ, 2%; p < .0001. Recurrent association with twin-twin transfusion syndrome, intrauterine growth retardation, and other prenatal factors support disruption of vascular perfusion as the most likely unifying cause.
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Affiliation(s)
- Kaylee B Park
- University of Washington School of Medicine, Seattle, Washington, USA
| | - Teresa Chapman
- Department of Radiology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Kimberly A Aldinger
- Seattle Children's Research Institute, Center for Integrative Brain Research, Seattle, Washington, USA
| | - Ghayda M Mirzaa
- Seattle Children's Research Institute, Center for Integrative Brain Research, Seattle, Washington, USA.,Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA.,Brotman Baty Institute for Precision Medicine, Seattle, Washington, USA
| | - Jordan Zeiger
- Seattle Children's Research Institute, Center for Integrative Brain Research, Seattle, Washington, USA
| | - Anita Beck
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
| | - Ian A Glass
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
| | - Robert F Hevner
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Anna C Jansen
- Neurogenetics Research Group, Reproduction Genetics and Regenerative Medicine Research Cluster, Vrije Universiteit Brussel, Brussels, Belgium.,Pediatric Neurology Unit, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Desiree A Marshall
- Department of Anatomic Pathology and Neuropathology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Renske Oegema
- University Medical Center Utrecht, Department of Genetics, Utrecht, The Netherlands
| | - Elena Parrini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Meyer Children's Hospital, University of Florence, Florence, Italy
| | - Russell P Saneto
- Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Cynthia J Curry
- Genetic Medicine, Department of Pediatrics, University of California San Francisco, Fresno, California, USA
| | - Judith G Hall
- Departments of Medical Genetics and Pediatrics, University of British Columbia and BC Children's Hospital, Vancouver, Canada
| | - Renzo Guerrini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Meyer Children's Hospital, University of Florence, Florence, Italy
| | - Richard J Leventer
- Department of Neurology, Royal Children's Hospital, Murdoch Children's Research Institute and University of Melbourne Department of Pediatrics, Melbourne, Australia
| | - William B Dobyns
- Department of Pediatrics, Division of Genetics and Metabolism, University of Minnesota, Minneapolis, Minnesota, USA
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5
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Santiago-Colón A, Rocheleau CM, Chen IC, Sanderson W, Waters MA, Lawson CC, Langlois PH, Cragan JD, Reefhuis J. Association between maternal occupational exposure to polycyclic aromatic hydrocarbons and rare birth defects of the face and central nervous system. Birth Defects Res 2020; 112:404-417. [PMID: 31944002 PMCID: PMC8641638 DOI: 10.1002/bdr2.1643] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 11/21/2019] [Accepted: 12/03/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND Previous studies suggested associations between maternal smoking, a source of exposure to polycyclic aromatic hydrocarbons (PAHs) and other chemicals, and central nervous system and face birth defects; however, no previous studies have evaluated maternal occupational PAH exposure itself. METHODS Jobs held in the periconceptional period were retrospectively assigned for occupational PAH exposures. Associations between maternal occupational PAH exposure and selected rare defects of the face (cataracts, microphthalmia, glaucoma, microtia, and choanal atresia) and central nervous system (holoprosencephaly, hydrocephaly, cerebellar hypoplasia, and Dandy-Walker malformation) were evaluated using data from the National Birth Defects Prevention Study, a population-based case-control study in the United States. Crude and adjusted odds ratios (ORs) with 95% confidence intervals were calculated to estimate associations between each evaluated defect and PAH exposure using multivariable logistic regression. RESULTS Food and beverage serving, as well as cooks and food preparation occupations, were among the most frequent jobs held by exposed mothers. Cataracts, microtia, microphthalmia, and holoprosencephaly were significantly associated with PAH exposure with evidence of dose-response (P-values for trend ≤.05). Hydrocephaly was associated with any PAH exposure, but not significant for trend. Sensitivity analyses that reduced possible sources of exposure misclassification tended to strengthen associations. CONCLUSIONS This is the first population-based case-control study to evaluate associations between maternal occupational PAH exposures and these rare birth defects of the central nervous system and face.
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Affiliation(s)
- Albeliz Santiago-Colón
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Cincinnati, Ohio
| | - Carissa M Rocheleau
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Cincinnati, Ohio
| | - I-Chen Chen
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Cincinnati, Ohio
| | - Wayne Sanderson
- College of Public Health, University of Kentucky, Lexington, Kentucky
| | - Martha A Waters
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Cincinnati, Ohio
| | - Christina C Lawson
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Cincinnati, Ohio
| | - Peter H Langlois
- Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, Texas
| | - Janet D Cragan
- Centers for Disease Control and Prevention, National Center on Birth Defects and Developmental Disabilities, Atlanta, Georgia
| | - Jennita Reefhuis
- Centers for Disease Control and Prevention, National Center on Birth Defects and Developmental Disabilities, Atlanta, Georgia
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Weaver NL, Bradshaw WT, Blake SM. Differential Diagnoses and Their Implications of Dandy-Walker Malformation or Isolated Cisterna Magna, a Case Study: Baby V. Neonatal Netw 2019; 37:358-364. [PMID: 30567885 DOI: 10.1891/0730-0832.37.6.358] [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: 11/25/2022]
Abstract
We explore the outcome of a fetus with a posterior fossa abnormality thought to be a Dandy-Walker malformation based on prenatal ultrasound imaging. The infant was later diagnosed by magnetic resonance imaging (MRI) as having an isolated cisterna magna. When assessing brain abnormalities, there is increased accuracy of prenatal MRI versus prenatal ultrasound. Accurate diagnosis of an infant is paramount so that an inheritance pattern, risk of recurrence, involvement of other systems, and a prognosis can be determined. Communicating with the family and supporting them with the correct information is then enhanced. It should be standard protocol to obtain a fetal MRI if an abnormal prenatal ultrasound of the brain is detected. Further research is needed to assess the accuracy of using MRI versus ultrasonography prenatally to diagnose posterior brain abnormalities.
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7
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Howley MM, Keppler-Noreuil KM, Cunniff CM, Browne ML. Descriptive epidemiology of cerebellar hypoplasia in the National Birth Defects Prevention Study. Birth Defects Res 2018; 110:1419-1432. [PMID: 30230717 PMCID: PMC6265081 DOI: 10.1002/bdr2.1388] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND Cerebellar hypoplasia is a rare disorder of cerebellar formation in which the cerebellum is not completely developed, smaller than it should be, or completely absent. The prevalence of cerebellar hypoplasia at birth is unknown, and little is known about epidemiological risk factors. Using data from the National Birth Defects Prevention Study (NBDPS), a population-based, case-control study, we analyzed clinical features and potential risk factors for nonsyndromic cerebellar hypoplasia. METHODS The NBDPS included pregnancies with estimated delivery dates from 1997-2011. We described clinical features of cerebellar hypoplasia cases from the study area. We explored risk factors for cerebellar hypoplasia (case characteristics, demographics, pregnancy characteristics, maternal health conditions, maternal medication use, and maternal behavioral exposures) by comparing cases to non-malformed live born control infants. We calculated crude odds ratios (ORs) and 95% confidence intervals using logistic regression models. RESULTS We identified 87 eligible cerebellar hypoplasia cases and 55 mothers who participated in the NBDPS. There were no differences in clinical features between interviewed and non-interviewed cases. Cerebellar hypoplasia cases were more likely than controls to be from a multiple pregnancy, be born preterm, and have low birth weight. Cerebellar hypoplasia cases were more likely to be born in or after 2005, as opposed to earlier in NBDPS. We found elevated ORs that were not statistically significant for maternal use of vasoactive medications, non-Hispanic black mothers, and mothers with a history of hypertension. CONCLUSIONS Although unadjusted, our findings from a large, population-based study can contribute to new hypotheses regarding the etiology of cerebellar hypoplasia.
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Affiliation(s)
- Meredith M Howley
- Congenital Malformations Registry, NYS Department of Health, Albany, New York
| | - Kim M Keppler-Noreuil
- Medical Genomic & Metabolic Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | | | - Marilyn L Browne
- Congenital Malformations Registry, NYS Department of Health, Albany, New York
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, Rensselaer, New York
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8
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Shalata A, Lauhasurayotin S, Leibovitz Z, Li H, Hebert D, Dhanraj S, Hadid Y, Mahroum M, Bajar J, Egenburg S, Arad A, Shohat M, Haddad S, Bakry H, Moshiri H, Scherer SW, Tzur S, Dror Y. Biallelic mutations in EXOC3L2 cause a novel syndrome that affects the brain, kidney and blood. J Med Genet 2018; 56:340-346. [PMID: 30327448 DOI: 10.1136/jmedgenet-2018-105421] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/18/2018] [Accepted: 08/17/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND Dandy-Walker malformation features agenesis/hypoplasia of the cerebellar vermis, cystic dilatation of the fourth ventricle and enlargement of posterior fossa. Although Dandy-Walker malformation is relatively common and several genes were linked to the syndrome, the genetic cause in the majority of cases is unknown. OBJECTIVE To identify the mutated gene responsible for Dandy-Walker malformation, kidney disease and bone marrow failure in four patients from two unrelated families. METHODS Medical assessment, sonographic, MRI and pathological studies were used to define phenotype. Chromosomal microarray analysis and whole-exome sequence were performed to unravel the genotype. RESULTS We report four subjects from two unrelated families with homozygous mutations in the Exocyst Complex Component 3-Like-2 gene (EXOC3L2).EXOC3L2 functions in trafficking of post-Golgi vesicles to the plasma membrane. In the first family a missense mutation in a highly conserved amino acid, p.Leu41Gln, was found in three fetuses; all had severe forms of Dandy-Walker malformation that was detectable by prenatal ultrasonography and confirmed by autopsy. In the second family, the affected child carried a nonsense mutation, p.Arg72*, and no detected protein. He had peritrigonal and cerebellar white matter abnormalities with enlargement of the ventricular trigones, developmental delay, pituitary hypoplasia, severe renal dysplasia and bone marrow failure. CONCLUSION We propose that biallelic EXOC3L2 mutations lead to a novel syndrome that affects hindbrain development, kidney and possibly the bone marrow.
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Affiliation(s)
- Adel Shalata
- Pediatrics and Medical Genetics and The Simon Winter Institute for Human Genetics, Bnai Zion Medical Center, Haifa, Israel
| | - Supanun Lauhasurayotin
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
- Marrow Failure and Myelodysplasia Program, Division of Hematology/ Oncology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Israel
| | - Zvi Leibovitz
- Obstetrics-Gynecology Ultrasound Unit, Bnai-Zion Medical Center and Rappaport Faculty of Medicine, The Technion, Haifa, Israel
| | - Hongbing Li
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
- Marrow Failure and Myelodysplasia Program, Division of Hematology/ Oncology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Israel
| | - Diane Hebert
- Division of Nephrology, Department of Paediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Santhosh Dhanraj
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
- Marrow Failure and Myelodysplasia Program, Division of Hematology/ Oncology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Israel
| | - Yarin Hadid
- Pediatrics and Medical Genetics and The Simon Winter Institute for Human Genetics, Bnai Zion Medical Center, Haifa, Israel
| | - Mohammed Mahroum
- Pediatrics and Medical Genetics and The Simon Winter Institute for Human Genetics, Bnai Zion Medical Center, Haifa, Israel
| | - Jacob Bajar
- Department of Pathology, Bnai Zion Medical Center, Haifa, Israel
| | - Sandro Egenburg
- Department of Pathology, Bnai Zion Medical Center, Haifa, Israel
| | - Ayala Arad
- Department of Pathology, Bnai Zion Medical Center, Haifa, Israel
| | - Mordechai Shohat
- Sheba Cancer Research Center, Sackler School of Medicine, Tel Aviva University, Maccabi Genetic Institute, Tel Aviv, Israel
| | - Sami Haddad
- Ultrasound unit, Obstetrics-Gynecology Department, Baruch Padeh Peoria Hospital, Tiberias, Israel
| | - Hassan Bakry
- Obstetrics-Gynecology Ultrasound Unit, Bnai-Zion Medical Center and Rappaport Faculty of Medicine, The Technion, Haifa, Israel
| | - Houtan Moshiri
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Stephen W Scherer
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Shay Tzur
- Laboratory of Molecular Medicine, Rappaport Faculty of Medicine and Research Institute, Technion - Israel Institute of Technology, Haifa, Israel
- Genomic Research Department, Emedgene Technologies, Tel Aviv, Israel
| | - Yigal Dror
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
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9
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Beliaeva EV, Lapshina LV, Shaposhnikova EV, Molgachev AA. [The case of completed pregnancy of the patient with Dandy-Walker malformation]. Zh Nevrol Psikhiatr Im S S Korsakova 2018; 118:85-89. [PMID: 29560948 DOI: 10.17116/jnevro20181182185-89] [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: 11/17/2022]
Abstract
Dandy-Walker malformation is a rare disease of the central nervous system pathology (congenital malformations of the fossa cranii posterior). The key features of this syndrome are an enlargement of the fourth ventricle; complete absence of the cerebellar vermis, the posterior midline area of cerebellar cortex responsible for coordination of the axial musculature; and cyst formation near the internal base of the skull. Pregnant patients with Dandy-Walker malformation are at high risk and are managed by multidisciplinary teams including neurologists and obstetricians. We present a case report of full-term pregnancy and uncomplicated delivery in a women with Dandy-Walker malformation.
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Affiliation(s)
| | | | - E V Shaposhnikova
- Maternity Home #4, Krasnoyarsk, Russia; Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russia
| | - A A Molgachev
- Berezin Medical Diagnostic Centre, International Institute of Biological Systems, Krasnoyarsk, Russia
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Álvarez Gómez E, Schadegg Peña D, Bengaly Minthe M, García-Arilla Calvo E. [Dandy-Walker syndrome in an independent for basic activities of daily living woman of 85 years old]. Rev Esp Geriatr Gerontol 2018; 53:115-117. [PMID: 28320547 DOI: 10.1016/j.regg.2017.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/25/2017] [Accepted: 01/31/2017] [Indexed: 06/06/2023]
Affiliation(s)
- Esther Álvarez Gómez
- Servicio de Geriatría, Hospital Real de Nuestra Señora de Gracia, Zaragoza, España.
| | - Daniel Schadegg Peña
- Servicio de Geriatría, Hospital Real de Nuestra Señora de Gracia, Zaragoza, España
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Gaffney RE, Fisher KL. Dandy-Walker Malformation With Concomitant Agenesis of the Corpus Callosum as Investigated by Neonatal Sonography. JOURNAL OF DIAGNOSTIC MEDICAL SONOGRAPHY 2017. [DOI: 10.1177/8756479317697276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Dandy-Walker malformation and agenesis of the corpus callosum, although uncommon among all births, are commonly seen in association with one another due to the malformations’ effects on the central nervous system. Obstetric sonographers are likely familiar with the typical appearance of these abnormalities in utero, as sonography is routinely used to detect such congenital anomalies prenatally. However, sonography also plays a valuable role in the postnatal follow-up evaluation of the brain and other body systems affected by Dandy-Walker malformation and its associated abnormalities, thus making it imperative for all sonographers to be familiar with their postnatal sonographic appearance. The case presented demonstrates the use of neonatal sonography to evaluate and follow a case of Dandy-Walker malformation with associated agenesis of the corpus callosum that was originally diagnosed by prenatal sonography. The purpose of this case study is to highlight the pathologies and their coexistence, demonstrate their neonatal sonographic characteristics, exhibit corresponding magnetic resonance imaging appearance, and provide guidance for future patient cases.
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Affiliation(s)
- Rachel E. Gaffney
- Diagnostic Medical Ultrasound Program, University of Missouri, Columbia, MO, USA
| | - Kelsy L. Fisher
- Diagnostic Medical Ultrasound Program, University of Missouri, Columbia, MO, USA
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