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Liu H, Mo ZH, Yang H, Zhang ZF, Hong D, Wen L, Lin MY, Zheng YY, Zhang ZW, Xu XW, Zhuang J, Wang SS. Automatic Facial Recognition of Williams-Beuren Syndrome Based on Deep Convolutional Neural Networks. Front Pediatr 2021; 9:648255. [PMID: 34095025 PMCID: PMC8170407 DOI: 10.3389/fped.2021.648255] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/21/2021] [Indexed: 11/25/2022] Open
Abstract
Background: Williams-Beuren syndrome (WBS) is a rare genetic syndrome with a characteristic "elfin" facial gestalt. The "elfin" facial characteristics include a broad forehead, periorbital puffiness, flat nasal bridge, short upturned nose, wide mouth, thick lips, and pointed chin. Recently, deep convolutional neural networks (CNNs) have been successfully applied to facial recognition for diagnosing genetic syndromes. However, there is little research on WBS facial recognition using deep CNNs. Objective: The purpose of this study was to construct an automatic facial recognition model for WBS diagnosis based on deep CNNs. Methods: The study enrolled 104 WBS children, 91 cases with other genetic syndromes, and 145 healthy children. The photo dataset used only one frontal facial photo from each participant. Five face recognition frameworks for WBS were constructed by adopting the VGG-16, VGG-19, ResNet-18, ResNet-34, and MobileNet-V2 architectures, respectively. ImageNet transfer learning was used to avoid over-fitting. The classification performance of the facial recognition models was assessed by five-fold cross validation, and comparison with human experts was performed. Results: The five face recognition frameworks for WBS were constructed. The VGG-19 model achieved the best performance. The accuracy, precision, recall, F1 score, and area under curve (AUC) of the VGG-19 model were 92.7 ± 1.3%, 94.0 ± 5.6%, 81.7 ± 3.6%, 87.2 ± 2.0%, and 89.6 ± 1.3%, respectively. The highest accuracy, precision, recall, F1 score, and AUC of human experts were 82.1, 65.9, 85.6, 74.5, and 83.0%, respectively. The AUCs of each human expert were inferior to the AUCs of the VGG-16 (88.6 ± 3.5%), VGG-19 (89.6 ± 1.3%), ResNet-18 (83.6 ± 8.2%), and ResNet-34 (86.3 ± 4.9%) models. Conclusions: This study highlighted the possibility of using deep CNNs for diagnosing WBS in clinical practice. The facial recognition framework based on VGG-19 could play a prominent role in WBS diagnosis. Transfer learning technology can help to construct facial recognition models of genetic syndromes with small-scale datasets.
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Affiliation(s)
- Hui Liu
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Zi-Hua Mo
- Department of Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Hang Yang
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Zheng-Fu Zhang
- Department of Radiology, Qingdao Central Hospital, Qingdao, China
| | - Dian Hong
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Long Wen
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Min-Yin Lin
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Ying-Yi Zheng
- Cardiac Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Zhi-Wei Zhang
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Xiao-Wei Xu
- Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jian Zhuang
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Shu-Shui Wang
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Cardiovascular Institute, Guangzhou, China
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Taylor-Miller T, Allgrove J. Endocrine Diseases of Newborn: Epidemiology, Pathogenesis, Therapeutic Options, and Outcome "Current Insights Into Disorders of Calcium and Phosphate in the Newborn". Front Pediatr 2021; 9:600490. [PMID: 33614549 PMCID: PMC7892781 DOI: 10.3389/fped.2021.600490] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 01/13/2021] [Indexed: 11/13/2022] Open
Abstract
The physiology and regulation of bone minerals in the fetus and the newborn is significantly different from children and adults. The bone minerals calcium, phosphate and magnesium are all maintained at higher concentrations in utero to achieve adequate bone accretion. This is an integral component of normal fetal development which facilitates safe neonatal transition to post-natal life. When deciphering the cause of bone mineral disorders in newborns, the potential differential diagnosis list is broad and complex, including several extremely rare conditions. Also, significant discoveries including new embryological molecular genetic transcription factors, the role of active placental mineral transport, and hormone regulation factors have changed the understanding of calcium and phosphate homeostasis in the fetus and the newborn. This article will guide clinicians through an updated review of calcium and phosphate physiology, then review specific conditions pertinent to successful neonatal care. Furthermore, with the advancement of increasingly rapid molecular genetic testing, genomics will continue to play a greater role in this area of fetal diagnostics and prognostication.
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Affiliation(s)
- Tashunka Taylor-Miller
- Department of Endocrinology and Metabolic Medicine, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Jeremy Allgrove
- Department of Endocrinology and Metabolic Medicine, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
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153
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Outcomes of an 8-Week Treadmill Training Program for a Toddler With Williams Syndrome: A Case Report. Pediatr Phys Ther 2021; 33:E10-E14. [PMID: 33337781 DOI: 10.1097/pep.0000000000000770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE This case report highlights the functional and quality-of-life outcomes of an 8-week treadmill training program for an 18-month old child with Williams syndrome who is not walking. SUMMARY OF KEY POINTS The child had clinical improvements in gross motor function and quality of life as determined by the Gross Motor Function Measure and Pediatric Quality of Life Inventory after 8 weeks of treadmill training as an outpatient. STATEMENT OF CONCLUSION AND RECOMMENDATIONS FOR CLINICAL PRACTICE Treadmill training is clinically feasible and effective for this child with Williams syndrome. Further research is necessary for generalizability. Treadmill training should be considered when developing a plan of care for children with Williams syndrome who are not walking or children with similar deficits.
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154
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Canton APM, Krepischi ACV, Montenegro LR, Costa S, Rosenberg C, Steunou V, Sobrier ML, Santana L, Honjo RS, Kim CA, de Zegher F, Idkowiak J, Gilligan LC, Arlt W, Funari MFDA, Jorge AADL, Mendonca BB, Netchine I, Brito VN, Latronico AC. Insights from the genetic characterization of central precocious puberty associated with multiple anomalies. Hum Reprod 2020; 36:506-518. [DOI: 10.1093/humrep/deaa306] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/12/2020] [Indexed: 01/08/2023] Open
Abstract
Abstract
STUDY QUESTION
Is there an (epi)genetic basis in patients with central precocious puberty (CPP) associated with multiple anomalies that unmasks underlying mechanisms or reveals novel genetic findings related to human pubertal control?
SUMMARY ANSWER
In a group of 36 patients with CPP associated with multiple phenotypes, pathogenic or likely pathogenic (epi)genetic defects were identified in 12 (33%) patients, providing insights into the genetics of human pubertal control.
WHAT IS KNOWN ALREADY
A few studies have described patients with CPP associated with multiple anomalies, but without making inferences on causalities of CPP. Genetic-molecular studies of syndromic cases may reveal disease genes or mechanisms, as the presentation of such patients likely indicates a genetic disorder.
STUDY DESIGN, SIZE, DURATION
This translational study was based on a genetic-molecular analysis, including genome-wide high throughput methodologies, for searching structural or sequence variants implicated in CPP and DNA methylation analysis of candidate regions.
PARTICIPANTS/MATERIALS, SETTING, METHODS
A cohort of 197 patients (188 girls) with CPP without structural brain lesions was submitted to a detailed clinical evaluation, allowing the selection of 36 unrelated patients (32 girls) with CPP associated with multiple anomalies. Pathogenic allelic variants of genes known to cause monogenic CPP (KISS1R, KISS1, MKRN3 and DLK1) had been excluded in the entire cohort (197 patients). All selected patients with CPP associated with multiple anomalies (n = 36) underwent methylation analysis of candidate regions and chromosomal microarray analysis. A subset (n = 9) underwent whole-exome sequencing, due to presenting familial CPP and/or severe congenital malformations and neurocognitive abnormalities.
MAIN RESULTS AND THE ROLE OF CHANCE
Among the 36 selected patients with CPP, the more prevalent associated anomalies were metabolic, growth and neurocognitive conditions. In 12 (33%) of them, rare genetic abnormalities were identified: six patients presented genetic defects in loci known to be involved with CPP (14q32.2 and 7q11.23), whereas the other six presented defects in candidate genes or regions. In detail, three patients presented hypomethylation of DLK1/MEG3:IG-DMR (14q32.2 disruption or Temple syndrome), resulting from epimutation (n = 1) or maternal uniparental disomy of chromosome 14 (n = 2). Seven patients presented pathogenic copy number variants: three with de novo 7q11.23 deletions (Williams–Beuren syndrome), three with inherited Xp22.33 deletions, and one with de novo 1p31.3 duplication. Exome sequencing revealed potential pathogenic variants in two patients: a sporadic female case with frameshift variants in TNRC6B and AREL1 and a familial male case with a missense substitution in UGT2B4 and a frameshift deletion in MKKS.
LIMITATIONS, REASONS FOR CAUTION
The selection of patients was based on a retrospective clinical characterization, lacking a longitudinal inclusion of consecutive patients. In addition, future studies are needed, showing the long-term (mainly reproductive) outcomes in the included patients, as most of them are not in adult life yet.
WIDER IMPLICATIONS OF THE FINDINGS
The results highlighted the relevance of an integrative clinical-genetic approach in the elucidation of mechanisms and factors involved in pubertal control. Chromosome 14q32.2 disruption indicated the loss of imprinting of DLK1 as a probable mechanism of CPP. Two other chromosomal regions (7q11.23 and Xp22.33) represented new candidate loci potentially involved in this disorder of pubertal timing.
STUDY FUNDING/COMPETING INTEREST(S)
This work was supported by grant number 2018/03198-0 (to A.P.M.C.) and grant number 2013/08028-1 (to A.C.V.K) from the São Paulo Research Foundation (FAPESP), and grant number 403525/2016-0 (to A.C.L.) and grant number 302849/2015-7 (to A.C.L.) and grant number 141625/2016-3 (to A.C.V.K) from the National Council for Scientific and Technological Development (CNPq). The authors have nothing to disclose.
TRIAL REGISTRATION NUMBER
N/A.
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Affiliation(s)
- Ana Pinheiro Machado Canton
- Developmental Endocrinology Unit, Laboratory of Hormones and Molecular Genetics, LIM42, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Luciana Ribeiro Montenegro
- Developmental Endocrinology Unit, Laboratory of Hormones and Molecular Genetics, LIM42, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Silvia Costa
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Carla Rosenberg
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Virginie Steunou
- University Sorbonne, INSERM, UMR_S 938, Saint-Antoine Research Center, Paris, France
| | - Marie-Laure Sobrier
- University Sorbonne, INSERM, UMR_S 938, Saint-Antoine Research Center, Paris, France
| | - Lucas Santana
- Genetic Endocrinology Unit, LIM25, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Rachel Sayuri Honjo
- Clinical Genetics Unit, Children’s Institute, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Chong Ae Kim
- Clinical Genetics Unit, Children’s Institute, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Francis de Zegher
- Department of Development and Regeneration, University of Leuven, Leuven, Belgium
| | - Jan Idkowiak
- Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Department of Endocrinology and Diabetes, Birmingham Women’s and Children’s Hospital NHS Foundation Trust, Birmingham, UK
| | - Lorna C Gilligan
- Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Wiebke Arlt
- Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Mariana Ferreira de Assis Funari
- Developmental Endocrinology Unit, Laboratory of Hormones and Molecular Genetics, LIM42, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Alexander Augusto de Lima Jorge
- Developmental Endocrinology Unit, Laboratory of Hormones and Molecular Genetics, LIM42, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
- Genetic Endocrinology Unit, LIM25, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Berenice Bilharinho Mendonca
- Developmental Endocrinology Unit, Laboratory of Hormones and Molecular Genetics, LIM42, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Irène Netchine
- University Sorbonne, INSERM, UMR_S 938, Saint-Antoine Research Center, Paris, France
- AP-HP, Armand Trousseau Hospital, Endocrine Functional Exploration Service, Paris, France
| | - Vinicius Nahime Brito
- Developmental Endocrinology Unit, Laboratory of Hormones and Molecular Genetics, LIM42, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Ana Claudia Latronico
- Developmental Endocrinology Unit, Laboratory of Hormones and Molecular Genetics, LIM42, Department of Endocrinology and Metabolism, Clinicas Hospital, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
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155
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Chen J, Mao J, Ye L, Zong D, Qiao X. Multiple bladder diverticula with Williams-Beuren syndrome: a case report. Transl Pediatr 2020; 9:863-866. [PMID: 33457309 PMCID: PMC7804474 DOI: 10.21037/tp-20-311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Williams-Beuren syndrome (WBS) is an autosomal dominant disorder caused by a gene deletion on chromosome 7q11.23. Patients with WBS usually show a group of features such as developmental delay, cardiovascular anomalies, mental retardation, and characteristic facial appearance. It occurs in 1:7,500 live births and affects males and females equally. Recent studies showed that lower urinary tract symptoms were also frequent in WBS patients. However, there is extremely rare study report non-monosymptomatic nocturnal enuresis as the main manifestation of Williams syndrome in children. We reported a child with non-monosymptomatic nocturnal enuresis and multiple bladder diverticula as the main implications of Williams syndrome. A 7.6-year-old girl was admitted to our hospital due to frequent micturition, urgency, and nocturnal enuresis for 4 years, and B ultrasound of urinary system revealed multiple bladder diverticula. The patient was found to have 7q11.23 deletion that involves the elastin gene for WBS. Multiple bladder diverticula in WBS patients can lead to many lower urinary tract symptoms. The treatment for the lower urinary tract symptoms in WBS patients with multiple bladder diverticula is lacking. Lower urinary tract symptoms should be considered as a significant indicator of the clinical diagnosis of WBS and have a significant negative impact on patient's quality of life.
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Affiliation(s)
- Jing Chen
- Department of Nephrology, Ningbo Women and Children's Hospital, Ningbo, China
| | - Jianhua Mao
- Department of Nephrology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lezhen Ye
- Department of Nephrology, Ningbo Women and Children's Hospital, Ningbo, China
| | - Dongmei Zong
- Department of Nephrology, Ningbo Women and Children's Hospital, Ningbo, China
| | - Xiaohui Qiao
- Department of Nephrology, Ningbo Women and Children's Hospital, Ningbo, China
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156
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Cavallo F, Troglio F, Fagà G, Fancelli D, Shyti R, Trattaro S, Zanella M, D'Agostino G, Hughes JM, Cera MR, Pasi M, Gabriele M, Lazzarin M, Mihailovich M, Kooy F, Rosa A, Mercurio C, Varasi M, Testa G. High-throughput screening identifies histone deacetylase inhibitors that modulate GTF2I expression in 7q11.23 microduplication autism spectrum disorder patient-derived cortical neurons. Mol Autism 2020; 11:88. [PMID: 33208191 PMCID: PMC7677843 DOI: 10.1186/s13229-020-00387-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 10/01/2020] [Indexed: 12/27/2022] Open
Abstract
Background Autism spectrum disorder (ASD) is a highly prevalent neurodevelopmental condition affecting almost 1% of children, and represents a major unmet medical need with no effective drug treatment available. Duplication at 7q11.23 (7Dup), encompassing 26–28 genes, is one of the best characterized ASD-causing copy number variations and offers unique translational opportunities, because the hemideletion of the same interval causes Williams–Beuren syndrome (WBS), a condition defined by hypersociability and language strengths, thereby providing a unique reference to validate treatments for the ASD symptoms. In the above-indicated interval at 7q11.23, defined as WBS critical region, several genes, such as GTF2I, BAZ1B, CLIP2 and EIF4H, emerged as critical for their role in the pathogenesis of WBS and 7Dup both from mouse models and human studies. Methods We performed a high-throughput screening of 1478 compounds, including central nervous system agents, epigenetic modulators and experimental substances, on patient-derived cortical glutamatergic neurons differentiated from our cohort of induced pluripotent stem cell lines (iPSCs), monitoring the transcriptional modulation of WBS interval genes, with a special focus on GTF2I, in light of its overriding pathogenic role. The hits identified were validated by measuring gene expression by qRT-PCR and the results were confirmed by western blotting. Results We identified and selected three histone deacetylase inhibitors (HDACi) that decreased the abnormal expression level of GTF2I in 7Dup cortical glutamatergic neurons differentiated from four genetically different iPSC lines. We confirmed this effect also at the protein level. Limitations In this study, we did not address the molecular mechanisms whereby HDAC inhibitors act on GTF2I. The lead compounds identified will now need to be advanced to further testing in additional models, including patient-derived brain organoids and mouse models recapitulating the gene imbalances of the 7q11.23 microduplication, in order to validate their efficacy in rescuing phenotypes across multiple functional layers within a translational pipeline towards clinical use. Conclusions These results represent a unique opportunity for the development of a specific class of compounds for treating 7Dup and other forms of intellectual disability and autism.
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Affiliation(s)
- Francesca Cavallo
- Department of Oncology and Hemato-Oncology, University of Milan, c/o High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy
| | - Flavia Troglio
- High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy
| | - Giovanni Fagà
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,IFOM, the FIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Daniele Fancelli
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,IFOM, the FIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Reinald Shyti
- High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy
| | - Sebastiano Trattaro
- Department of Oncology and Hemato-Oncology, University of Milan, c/o High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy
| | - Matteo Zanella
- High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,Evotec SE, Hamburg, Germany
| | - Giuseppe D'Agostino
- High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - James M Hughes
- High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,FPO - IRCCS, Candiolo Cancer Institute, SP 142 Km 3.95, 10060, Candiolo, TO, Italy
| | - Maria Rosaria Cera
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,IFOM, the FIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Maurizio Pasi
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,IFOM, the FIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Michele Gabriele
- High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA
| | - Maddalena Lazzarin
- Department of Oncology and Hemato-Oncology, University of Milan, c/o High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy
| | - Marija Mihailovich
- Department of Oncology and Hemato-Oncology, University of Milan, c/o High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy
| | - Frank Kooy
- Department of Medical Genetics, University of Antwerp, Antwerp, Belgium
| | - Alessandro Rosa
- Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy.,Center for Life Nano Science, Istituto Italiano Di Tecnologia, Viale Regina Elena 291, 00161, Rome, Italy
| | - Ciro Mercurio
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,IFOM, the FIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Mario Varasi
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy.,IFOM, the FIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Giuseppe Testa
- High Definition Disease Modelling Lab: Stem Cell and Organoid Epigenetics, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy. .,Department of Oncology and Hemato-Oncology, University of Milan, Via Santa Sofia 9, 20122, Milan, Italy. .,Human Technopole, Via Cristina Belgioioso, 171, 20157, Milan, Italy.
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157
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Dentici ML, Bergonzini P, Scibelli F, Caciolo C, De Rose P, Cumbo F, Alesi V, Capolino R, Zanni G, Sinibaldi L, Novelli A, Tartaglia M, Digilio MC, Dallapiccola B, Vicari S, Alfieri P. 7q11.23 Microduplication Syndrome: Clinical and Neurobehavioral Profiling. Brain Sci 2020; 10:E839. [PMID: 33187326 PMCID: PMC7697259 DOI: 10.3390/brainsci10110839] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 11/20/2022] Open
Abstract
7q11.23 Microduplication (dup7q11.23) syndrome is a rare autosomal dominant disorder due to a recurring 1.5 to 1.8 Mb duplication of the Williams-Beuren Syndrome critical region. Dup7q11.23 has been associated with several neuro-behavioral characteristics such as low cognitive and adaptive functioning, expressive language impairment, anxiety problems and autistic features. In the present study, we analyze the clinical features of ten individuals in which array-CGH detected dup7q11.23, spanning from 1.4 to 2.1 Mb. The clinical characteristics associated with dup7q11.23 are discussed with respect to its reciprocal deletion. Consistent with previous studies, we confirm that individuals with dup7q11.23 syndrome do not have a homogeneous clinical profile, although some recurring dysmorphic features were found, including macrocephaly, prominent forehead, elongated palpebral fissures, thin lip vermilion and microstomia. Minor congenital malformations include patent ductus arteriosus, cryptorchidism and pes planus. A common finding is hypotonia and joint laxity, resulting in mild motor delay. Neuropsychological and psychodiagnostic assessment confirm that mild cognitive impairment, expressive language deficits and anxiety are recurring neurobehavioral features. New insights into adaptive, psychopathological and neurodevelopmental profiles are discussed.
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Affiliation(s)
- Maria Lisa Dentici
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Paola Bergonzini
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Francesco Scibelli
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Cristina Caciolo
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Paola De Rose
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Francesca Cumbo
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Viola Alesi
- Laboratory of Medical Genetics, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (V.A.); (A.N.)
| | - Rossella Capolino
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Ginevra Zanni
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
- Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Lorenzo Sinibaldi
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Antonio Novelli
- Laboratory of Medical Genetics, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (V.A.); (A.N.)
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Maria Cristina Digilio
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Bruno Dallapiccola
- Scientific Directorate, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy;
| | - Stefano Vicari
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
- Department of Life Sciences and Public Health, Catholic University, 00168 Rome, Italy
| | - Paolo Alfieri
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
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158
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Pangallo E, Cianci P, Favuzza F, Milani D, Vimercati C, Moretti A, Picchi R, De Paoli A, Agosti M, Selicorni A. Pulmonary function in Williams-Beuren syndrome: Spirometric data of 22 Italian patients. Am J Med Genet A 2020; 185:390-396. [PMID: 33174385 DOI: 10.1002/ajmg.a.61966] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/21/2020] [Accepted: 10/24/2020] [Indexed: 11/12/2022]
Abstract
Williams-Beuren syndrome (WBS) is caused by an haploinsufficiency of the 7q11.2 region which involves the elastin gene (ELN). A deficiency of elastin is a known pathophysiological mechanism of emphysema/chronic obstructive pulmonary disease (COPD). A previous study hypothesized a higher risk of COPD in WBS patients. Herein, this phenomenon was further investigated looking for a possible correlation between COPD and WBS. Dynamic lung volumes (forced vital capacity [FVC], FEV1, FEV1/FVC) were measured in 22 patients (age range 18.9 ± 7.4 years) affected with WBS, genetically confirmed, correlating these parameters to respiratory risk factors. Dyspnea, cough and wheezing were detected in 6/22 (27%) patients. Obstructive and restrictive patterns were identified in 6/22 (27%) and 2/22 (9%) cases, respectively with no evidence of irreversible obstruction. CVF, FEV1 and FEV1/CVF mean values were all normal, with values of 91.3% (n.v. > 80%), 84.2% (n.v. > 80%) and 0.82 (n.v. > 0.7), respectively. The severity of the comorbidities did not show a cause-effect relation with the respiratory patterns, nevertheless patients treated with anti-hypertensive drugs had poorer pulmonary function. Our findings are in accordance with previous observations, showing that emphysema/COPD is not a typical finding in young patients with WBS. However, a respiratory function assessment should be included in the follow-up of WBS patients, especially in adolescents/young adults under treatment with anti-hypertensive drugs.
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Affiliation(s)
- Elisabetta Pangallo
- Pediatric and Neonatology Department, Hospital "F. Del Ponte", University of Insubria, Varese, Italy
| | - Paola Cianci
- Pediatric Department, ASST-Lariana, Sant'Anna Hospital, San Fermo della Battaglia, Como, Italy
| | - Filippo Favuzza
- Pediatric Department, ASST-Lariana, Sant'Anna Hospital, San Fermo della Battaglia, Como, Italy
| | - Donatella Milani
- Highly Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Chiara Vimercati
- Pediatric Department, Fondazione MBMM San Gerardo Hospital, Monza, Italy
| | - Alex Moretti
- Pediatric and Neonatology Department, Hospital "F. Del Ponte", University of Insubria, Varese, Italy
| | - Raffaella Picchi
- Pediatric Department, ASST-Lariana, Sant'Anna Hospital, San Fermo della Battaglia, Como, Italy
| | - Anita De Paoli
- Pediatric Department, ASST-Lariana, Sant'Anna Hospital, San Fermo della Battaglia, Como, Italy
| | - Massimo Agosti
- Pediatric and Neonatology Department, Hospital "F. Del Ponte", University of Insubria, Varese, Italy
| | - Angelo Selicorni
- Pediatric Department, ASST-Lariana, Sant'Anna Hospital, San Fermo della Battaglia, Como, Italy
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159
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Niego A, Benítez-Burraco A. Autism and Williams syndrome: Dissimilar socio-cognitive profiles with similar patterns of abnormal gene expression in the blood. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2020; 25:464-489. [PMID: 33143449 DOI: 10.1177/1362361320965074] [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] [Indexed: 12/27/2022]
Abstract
LAY ABSTRACT Autism spectrum disorders and Williams syndrome are complex cognitive conditions exhibiting quite opposite features in the social domain: whereas people with autism spectrum disorders are mostly hyposocial, subjects with Williams syndrome are usually reported as hypersocial. At the same time, autism spectrum disorders and Williams syndrome share some common underlying behavioral and cognitive deficits. It is not clear, however, which genes account for the attested differences (and similarities) in the socio-cognitive domain. In this article, we adopted a comparative molecular approach and looked for genes that might be differentially (or similarly) regulated in the blood of people with these conditions. We found a significant overlap between genes dysregulated in the blood of patients compared to neurotypical controls, with most of them being upregulated or, in some cases, downregulated. Still, genes with similar expression trends can exhibit quantitative differences between conditions, with most of them being more dysregulated in Williams syndrome than in autism spectrum disorders. Differentially expressed genes are involved in aspects of brain development and function (particularly dendritogenesis) and are expressed in brain areas (particularly the cerebellum, the thalamus, and the striatum) of relevance for the autism spectrum disorder and the Williams syndrome etiopathogenesis. Overall, these genes emerge as promising candidates for the similarities and differences between the autism spectrum disorder and the Williams syndrome socio-cognitive profiles.
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160
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Hill JR, Eekhoff JD, Brophy RH, Lake SP. Elastic fibers in orthopedics: Form and function in tendons and ligaments, clinical implications, and future directions. J Orthop Res 2020; 38:2305-2317. [PMID: 32293749 PMCID: PMC7572591 DOI: 10.1002/jor.24695] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/21/2020] [Accepted: 04/11/2020] [Indexed: 02/04/2023]
Abstract
Elastic fibers are an essential component of the extracellular matrix of connective tissues. The focus of both clinical management and scientific investigation of elastic fiber disorders has centered on the cardiovascular manifestations due to their significant impact on morbidity and mortality. As such, the current understanding of the orthopedic conditions experienced by these patients is limited. The musculoskeletal implications of more subtle elastic fiber abnormalities, whether due to allelic variants or age-related tissue degeneration, are also not well understood. Recent advances have begun to uncover the effects of elastic fiber deficiency on tendon and ligament biomechanics; future research must further elucidate mechanisms governing the role of elastic fibers in these tissues. The identification of population-based genetic variations in elastic fibers will also be essential. Minoxidil administration, modulation of protein expression with micro-RNA molecules, and direct injection of recombinant elastic fiber precursors have demonstrated promise for therapeutic intervention, but further work is required prior to consideration for orthopedic clinical application. This review provides an overview of the role of elastic fibers in musculoskeletal tissue, summarizes current knowledge of the orthopedic manifestations of elastic fiber abnormalities, and identifies opportunities for future investigation and clinical application.
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Affiliation(s)
- J. Ryan Hill
- Department of Orthopaedic Surgery, Washington University in St. Louis, 425 S. Euclid Avenue, Suite 5505, St. Louis, MO 63110
| | - Jeremy D. Eekhoff
- Department of Biomedical Engineering, Washington University in St. Louis, One Brookings Drive, St. Louis, MO 63130
| | - Robert H. Brophy
- Department of Orthopaedic Surgery, Washington University in St. Louis, 425 S. Euclid Avenue, Suite 5505, St. Louis, MO 63110
| | - Spencer P. Lake
- Department of Biomedical Engineering, Washington University in St. Louis, One Brookings Drive, St. Louis, MO 63130,Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, One Brookings Drive, St. Louis, MO 63130
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161
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Trajkova S, Di Gregorio E, Ferrero GB, Carli D, Pavinato L, Delplancq G, Kuentz P, Brusco A. New Insights into Potocki-Shaffer Syndrome: Report of Two Novel Cases and Literature Review. Brain Sci 2020; 10:brainsci10110788. [PMID: 33126574 PMCID: PMC7693731 DOI: 10.3390/brainsci10110788] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/16/2020] [Accepted: 10/27/2020] [Indexed: 12/24/2022] Open
Abstract
Potocki-Shaffer syndrome (PSS) is a rare non-recurrent contiguous gene deletion syndrome involving chromosome 11p11.2. Current literature implies a minimal region with haploinsufficiency of three genes, ALX4 (parietal foramina), EXT2 (multiple exostoses), and PHF21A (craniofacial anomalies, and intellectual disability). The rest of the PSS phenotype is still not associated with a specific gene. We report a systematic review of the literature and included two novel cases. Because deletions are highly variable in size, we defined three groups of patients considering the PSS-genes involved. We found 23 full PSS cases (ALX4, EXT2, and PHF21A), 14 cases with EXT2-ALX4, and three with PHF21A only. Among the latter, we describe a novel male child showing developmental delay, café-au-lait spots, liner postnatal overgrowth and West-like epileptic encephalopathy. We suggest PSS cases may have epileptic spasms early in life, and PHF21A is likely to be the causative gene. Given their subtle presentation these may be overlooked and if left untreated could lead to a severe type or deterioration in the developmental plateau. If our hypothesis is correct, a timely therapy may ameliorate PSS phenotype and improve patients’ outcomes. Our analysis also shows PHF21A is a candidate for the overgrowth phenotype.
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Affiliation(s)
- Slavica Trajkova
- Department of Medical Sciences, University of Torino, 10126 Turin, Italy; (S.T.); (L.P.)
| | - Eleonora Di Gregorio
- Medical Genetics Unit, Città della Salute e della Scienza, University Hospital, 10126 Turin, Italy; (E.D.)
| | - Giovanni Battista Ferrero
- Department of Public Health and Paediatrics, University of Torino, 10126 Turin, Italy; (G.B.F.); (D.C.)
| | - Diana Carli
- Department of Public Health and Paediatrics, University of Torino, 10126 Turin, Italy; (G.B.F.); (D.C.)
| | - Lisa Pavinato
- Department of Medical Sciences, University of Torino, 10126 Turin, Italy; (S.T.); (L.P.)
| | - Geoffroy Delplancq
- Centre de Génétique Humaine, Université de Franche-Comté, 25000 Besançon, France; (G.D.)
- Service de Pédiatrie, CHU, 25000 Besançon, France
| | - Paul Kuentz
- Oncobiologie Génétique Bioinformatique, PCBio, Centre Hospitalier Universitaire de Besançon, 25000 Besançon, France; (P.K.)
- UMR-Inserm 1231 GAD, Génétique des Anomalies du développement, Université de Bourgogne Franche-Comté, 21000 Dijon, France
- Fédération Hospitalo-Universitaire Médecine Translationnelle et Anomalies du Développement (FHU TRANSLAD), Centre Hospitalier Universitaire de Dijon et Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Alfredo Brusco
- Department of Medical Sciences, University of Torino, 10126 Turin, Italy; (S.T.); (L.P.)
- Medical Genetics Unit, Città della Salute e della Scienza, University Hospital, 10126 Turin, Italy; (E.D.)
- Correspondence: (A.B.)
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162
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Gurumurthy A, Wu Q, Nar R, Paulsen K, Trumbull A, Fishman RC, Brand M, Strouboulis J, Qian Z, Bungert J. TFII-I/Gtf2i and Erythro-Megakaryopoiesis. Front Physiol 2020; 11:590180. [PMID: 33101065 PMCID: PMC7546208 DOI: 10.3389/fphys.2020.590180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 09/08/2020] [Indexed: 12/29/2022] Open
Abstract
TFII-I is a ubiquitously expressed transcription factor that positively or negatively regulates gene expression. TFII-I has been implicated in neuronal and immunologic diseases as well as in thymic epithelial cancer. Williams–Beuren Syndrome (WBS) is caused by a large hemizygous deletion on chromosome 7q11.23 which encompasses 26–28 genes, including GTF2I, the human gene encoding TFII-I. A subset of WBS patients has recently been shown to present with macrocytosis, a mild anemia characterized by enlarged erythrocytes. We conditionally deleted the TFII-I/Gtf2i gene in adult mice by tamoxifen induced Cre-recombination. Bone marrow cells revealed defects in erythro-megakaryopoiesis and an increase in expression of the adult β-globin gene. The data show that TFII-I acts as a repressor of β–globin gene transcription and that it is implicated in the differentiation of erythro-megakaryocytic cells.
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Affiliation(s)
- Aishwarya Gurumurthy
- Department of Biochemistry and Molecular Biology, College of Medicine, UF Health Cancer Center, Genetics Institute, Powell Gene Therapy Center, University of Florida, Gainesville, FL, United States
| | - Qiong Wu
- Division of Medicine and Department of Biochemistry and Molecular Biology, UF Health Cancer Center, University of Florida, Gainesville, FL, United States
| | - Rukiye Nar
- Department of Biochemistry and Molecular Biology, College of Medicine, UF Health Cancer Center, Genetics Institute, Powell Gene Therapy Center, University of Florida, Gainesville, FL, United States
| | - Kimberly Paulsen
- Department of Biochemistry and Molecular Biology, College of Medicine, UF Health Cancer Center, Genetics Institute, Powell Gene Therapy Center, University of Florida, Gainesville, FL, United States
| | - Alexis Trumbull
- Department of Biochemistry and Molecular Biology, College of Medicine, UF Health Cancer Center, Genetics Institute, Powell Gene Therapy Center, University of Florida, Gainesville, FL, United States
| | - Ryan C Fishman
- Department of Biochemistry and Molecular Biology, College of Medicine, UF Health Cancer Center, Genetics Institute, Powell Gene Therapy Center, University of Florida, Gainesville, FL, United States
| | - Marjorie Brand
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - John Strouboulis
- Comprehensive Cancer Center, School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Zhijian Qian
- Division of Medicine and Department of Biochemistry and Molecular Biology, UF Health Cancer Center, University of Florida, Gainesville, FL, United States
| | - Jörg Bungert
- Department of Biochemistry and Molecular Biology, College of Medicine, UF Health Cancer Center, Genetics Institute, Powell Gene Therapy Center, University of Florida, Gainesville, FL, United States
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163
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Gait characteristics of children with Williams syndrome with impaired visuospatial recognition: a three-dimensional gait analysis study. Exp Brain Res 2020; 238:2887-2895. [PMID: 33057869 DOI: 10.1007/s00221-020-05946-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 10/06/2020] [Indexed: 10/23/2022]
Abstract
Williams syndrome (WS) is a genetically based neurodevelopmental disorder characterized by intellectual disability and impaired visuospatial recognition. The aim of this study was to analyze the gait characteristics of WS children with impaired visuospatial recognition using a three-dimensional gait analysis (3DGA) to clarify the gait adaptation needed to compensate for it. 3DGA was performed in 8 WS children with impaired visuospatial recognition (mean age, 11.8 years) and 9 age-, sex-, height-, and weight-matched controls. Clinical data, fundamental motor tests, and gait variables while walking on a flat surface and walking up a mat were compared between the two groups, and the correlations between variables were analyzed in the WS children. WS children showed impairment of balance function without muscle weakness. In walking on a flat surface, the WS group showed reduced walking speed, short step length, increased variability of step length, increased knee flexion throughout the stance phase, increased horizontal pelvic range of motion (ROM), and a low Gait Deviation Index and a high Gait Profile Score, which are indices of gait quality. In walking up a mat, the WS group showed further reduced walking speed and decreased sagittal hip flexion and ankle dorsiflexion ROM in the swing phase. Impaired balance function was significantly correlated with increased variability of step length and decreased sagittal ankle dorsiflexion ROM in the swing phase. The detailed gait pattern of WS children with impaired visuospatial recognition was presented. These findings show that impaired visuospatial recognition and balance function contribute to gait adaptation.
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164
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Mansukhani SA, Brodsky MC, Bhatti MT. Exuberant Epipapillary Fibrosis in Williams Syndrome. JAMA Ophthalmol 2020; 138:e201409. [DOI: 10.1001/jamaophthalmol.2020.1409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Sasha A. Mansukhani
- Department of Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Michael C. Brodsky
- Department of Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - M. Tariq Bhatti
- Department of Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
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165
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Min S, Kinnear C, D'Alessandro LCA, Bouwmeester J, Yao R, Chiasson D, Keeley F, Mital S. Genetic Diagnosis and the Severity of Cardiovascular Phenotype in Patients With Elastin Arteriopathy. CIRCULATION-GENOMIC AND PRECISION MEDICINE 2020; 13:e002971. [PMID: 32960096 PMCID: PMC7748044 DOI: 10.1161/circgen.120.002971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Supplemental Digital Content is available in the text. Elastin insufficiency causes recurrent vascular stenoses. Hemizygous deletion of the elastin gene (ELN) causes Williams-Beuren syndrome (WBS), while single nucleotide variants in ELN cause nonsyndromic supravalvar aortic stenosis (SVAS). Our objective was to compare cardiovascular disease outcomes in patients with WBS and nonsyndromic SVAS.
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Affiliation(s)
- Sandar Min
- Genetics & Genome Biology Program (S. Min, C.K., J.B., R.Y., S. Mital), Hospital for Sick Children, Toronto
| | - Caroline Kinnear
- Genetics & Genome Biology Program (S. Min, C.K., J.B., R.Y., S. Mital), Hospital for Sick Children, Toronto
| | - Lisa C A D'Alessandro
- Pediatric Cardiology, Women and Children's Health, Trillium Health Partners, Mississauga (L.C.A.D.).,Department of Pediatrics (L.C.A.D.), University of Toronto
| | - Jade Bouwmeester
- Genetics & Genome Biology Program (S. Min, C.K., J.B., R.Y., S. Mital), Hospital for Sick Children, Toronto
| | - Roderick Yao
- Genetics & Genome Biology Program (S. Min, C.K., J.B., R.Y., S. Mital), Hospital for Sick Children, Toronto
| | - David Chiasson
- Department of Paediatric Laboratory Medicine, Laboratory Medicine and Pathobiology (D.C.), Hospital for Sick Children, Toronto
| | - Fred Keeley
- Program in Molecular Medicine (F.K.), Hospital for Sick Children, Toronto.,Department of Paediatric Laboratory Medicine, Laboratory Medicine and Pathobiology (D.C.), Hospital for Sick Children, Toronto
| | - Seema Mital
- Genetics & Genome Biology Program (S. Min, C.K., J.B., R.Y., S. Mital), Hospital for Sick Children, Toronto.,Department of Pediatrics (S. Mital), Hospital for Sick Children, Toronto
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166
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Niego A, Benítez-Burraco A. Autism and Williams syndrome: truly mirror conditions in the socio-cognitive domain? INTERNATIONAL JOURNAL OF DEVELOPMENTAL DISABILITIES 2020; 68:399-415. [PMID: 35937179 PMCID: PMC9351567 DOI: 10.1080/20473869.2020.1817717] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 06/15/2023]
Abstract
Autism Spectrum Disorders (ASD) and Williams Syndrome (WS) are frequently characterized as mirror conditions in the socio-cognitive domain, with ASD entailing restrictive social interests and with WS exhibiting hypersociability. In this review paper, we examine in detail the strong points and deficits of people with ASD or WS in the socio-cognitive domain and show that both conditions also share some common features. Moreover, we explore the neurobiological basis of the social profile of ASD and WS and found a similar mixture of common affected areas and condition-specific impaired regions. We discuss these findings under the hypothesis of a continuum of the socio-cognitive abilities in humans.
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Affiliation(s)
- Amy Niego
- Faculty of Philology, University of Seville, Seville, Spain
| | - Antonio Benítez-Burraco
- Department of Spanish, Linguistics, and Theory of Literature (Linguistics), Faculty of Philology, University of Seville, Seville, Spain
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167
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Gwilliam K, Joyce A, Dimitriou D. Early manifestation of sleep problems in toddlers with Williams Syndrome using a mixed method longitudinal approach. RESEARCH IN DEVELOPMENTAL DISABILITIES 2020; 104:103658. [PMID: 32505082 DOI: 10.1016/j.ridd.2020.103658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 04/02/2020] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
Children with neurodevelopmental disorders commonly experience sleep problems. Williams Syndrome (WS), a rare genetic disorder characterised by a complex, uneven cognitive profile, is no exception. Compared with children with typical development (TD), school-aged children with WS experience significant sleep disruption: shorter sleep duration, more night wakings, greater bedtime resistance and excessive daytime tiredness. In children with TD, sleep problems impede optimal daytime functioning. In WS, this could compound existing difficulties. Few studies have examined sleep in very young children with WS and little is known about the early emergence of sleep problems in this population. To date, studies have been based on parent-report and no studies have objectively assessed sleep patterns using longitudinal approach in toddlers with WS. Thus, the current study sought to objectively explore sleep patterns in toddlers with WS. Parents of 38 children (13 WS, 25 TD) completed the Brief Infant Screening Questionnaire and the Medical and Demographics Questionnaire and sleep patterns were assessed using actigraphy. Data were collected longitudinally at ages 18, 24 and 30 months. Significant sleep disturbances were present in WS from 18 months old. Sleep duration, as measured by actigraphy, was significantly shorter in WS at all ages and, furthermore, parents of children with WS reported more night wakings, longer settling times and high levels of parental involvement. Crucially, whereas actigraphy showed developmental improvements in sleep quality in TD, no longitudinal changes were found in WS. Findings could be instrumental in working towards instigating appropriate, timely sleep management in this group, thus improving outcomes for children and their families.
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Affiliation(s)
- Kate Gwilliam
- Lifespan Learning and Sleep Laboratory, UCL-Institute of Education, London, UK.
| | - Anna Joyce
- School of Psychotherapy & Psychology, Regent's University London, London, UK
| | - Dagmara Dimitriou
- Lifespan Learning and Sleep Laboratory, UCL-Institute of Education, London, UK.
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168
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Kimura R, Lardenoije R, Tomiwa K, Funabiki Y, Nakata M, Suzuki S, Awaya T, Kato T, Okazaki S, Murai T, Heike T, Rutten BPF, Hagiwara M. Integrated DNA methylation analysis reveals a potential role for ANKRD30B in Williams syndrome. Neuropsychopharmacology 2020; 45:1627-1636. [PMID: 32303053 PMCID: PMC7419304 DOI: 10.1038/s41386-020-0675-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 02/20/2020] [Accepted: 04/03/2020] [Indexed: 01/08/2023]
Abstract
Williams syndrome (WS) is a rare genetic disorder, caused by a microdeletion at the 7q11.23 region. WS exhibits a wide spectrum of features including hypersociability, which contrasts with social deficits typically associated with autism spectrum disorders. The phenotypic variability in WS likely involves epigenetic modifications; however, the nature of these events remains unclear. To better understand the role of epigenetics in WS phenotypes, we integrated DNA methylation and gene expression profiles in blood from patients with WS and controls. From these studies, 380 differentially methylated positions (DMPs), located throughout the genome, were identified. Systems-level analysis revealed multiple co-methylation modules linked to intermediate phenotypes of WS, with the top-scoring module related to neurogenesis and development of the central nervous system. Notably, ANKRD30B, a promising hub gene, was significantly hypermethylated in blood and downregulated in brain tissue from individuals with WS. Most CpG sites of ANKRD30B in blood were significantly correlated with brain regions. Furthermore, analyses of gene regulatory networks (GRNs) yielded master regulator transcription factors associated with WS. Taken together, this systems-level approach highlights the role of epigenetics in WS, and provides a possible explanation for the complex phenotypes observed in patients with WS.
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Affiliation(s)
- Ryo Kimura
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Roy Lardenoije
- grid.411984.10000 0001 0482 5331Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany ,grid.38142.3c000000041936754XDepartment of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA USA
| | - Kiyotaka Tomiwa
- grid.258799.80000 0004 0372 2033Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan ,grid.416948.60000 0004 1764 9308Department of Child Neurology, Osaka City General Hospital, Osaka, Japan ,Todaiji Ryoiku Hospital for Children, Nara, Japan
| | - Yasuko Funabiki
- grid.258799.80000 0004 0372 2033Department of Cognitive and Behavioral Science, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan ,grid.258799.80000 0004 0372 2033Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masatoshi Nakata
- grid.258799.80000 0004 0372 2033Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shiho Suzuki
- grid.258799.80000 0004 0372 2033Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomonari Awaya
- grid.258799.80000 0004 0372 2033Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takeo Kato
- grid.258799.80000 0004 0372 2033Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan ,grid.413697.e0000 0004 0378 7558Department of Pediatrics, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Shin Okazaki
- grid.416948.60000 0004 1764 9308Department of Child Neurology, Osaka City General Hospital, Osaka, Japan
| | - Toshiya Murai
- grid.258799.80000 0004 0372 2033Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshio Heike
- grid.258799.80000 0004 0372 2033Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan ,grid.413697.e0000 0004 0378 7558Department of Pediatrics, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Bart P. F. Rutten
- grid.412966.e0000 0004 0480 1382Division of Neuroscience, School for Mental Health and Neuroscience (MHeNS), Department of Psychiatry and Neuropsychology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Masatoshi Hagiwara
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
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169
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Serrano-Juárez CA, Prieto-Corona B, Rodríguez-Camacho M, Venegas-Vega CA, Yáñez-Téllez MG, Silva-Pereyra J, Salgado-Ceballos H, Arias-Trejo N, De León Miranda MA. An Exploration of Social Cognition in Children with Different Degrees of Genetic Deletion in Williams Syndrome. J Autism Dev Disord 2020; 51:1695-1704. [PMID: 32812194 DOI: 10.1007/s10803-020-04656-4] [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] [Indexed: 10/23/2022]
Abstract
An explanation for the social dysfunction observed in Williams syndrome may be deficits in social cognition. This study explored aspects of social cognition in children with Williams syndrome with different genotypes. The 12 participants included one with a 1.1 Mb deletion that retained the GTF2IRD1, GTF2I, and GTF2IRD2 genes, seven with a 1.5 Mb deletion that preserved the GTF2IRD2 gene, and four with a 1.8 Mb deletion with loss of all three genes. The participant retaining all three genes was found to have better performance on social judgment and first-order theory of mind tasks than the group with loss of all three genes. These results may reflect the influence of the GTF2I gene family on social cognition in Williams syndrome.
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Affiliation(s)
- Carlos Alberto Serrano-Juárez
- Laboratorio de Neurometría, Grupo de Neurociencias, FES Iztacala, UNAM, Av. De los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla, Edo. Méx, 54090, CDMX, México.,Iskalti Atención y Educación Psicológica SC, CDMX, México
| | - Belén Prieto-Corona
- Laboratorio de Neurometría, Grupo de Neurociencias, FES Iztacala, UNAM, Av. De los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla, Edo. Méx, 54090, CDMX, México.
| | - Mario Rodríguez-Camacho
- Laboratorio de Neurometría, Grupo de Neurociencias, FES Iztacala, UNAM, Av. De los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla, Edo. Méx, 54090, CDMX, México
| | | | - Ma Guillermina Yáñez-Téllez
- Laboratorio de Neurometría, Grupo de Neurociencias, FES Iztacala, UNAM, Av. De los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla, Edo. Méx, 54090, CDMX, México
| | - Juan Silva-Pereyra
- Laboratorio de Neurometría, Grupo de Neurociencias, FES Iztacala, UNAM, Av. De los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla, Edo. Méx, 54090, CDMX, México
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170
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Bailey PSJ, Ortmann BM, Martinelli AW, Houghton JW, Costa ASH, Burr SP, Antrobus R, Frezza C, Nathan JA. ABHD11 maintains 2-oxoglutarate metabolism by preserving functional lipoylation of the 2-oxoglutarate dehydrogenase complex. Nat Commun 2020; 11:4046. [PMID: 32792488 PMCID: PMC7426941 DOI: 10.1038/s41467-020-17862-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 07/21/2020] [Indexed: 12/17/2022] Open
Abstract
2-oxoglutarate (2-OG or α-ketoglutarate) relates mitochondrial metabolism to cell function by modulating the activity of 2-OG dependent dioxygenases involved in the hypoxia response and DNA/histone modifications. However, metabolic pathways that regulate these oxygen and 2-OG sensitive enzymes remain poorly understood. Here, using CRISPR Cas9 genome-wide mutagenesis to screen for genetic determinants of 2-OG levels, we uncover a redox sensitive mitochondrial lipoylation pathway, dependent on the mitochondrial hydrolase ABHD11, that signals changes in mitochondrial 2-OG metabolism to 2-OG dependent dioxygenase function. ABHD11 loss or inhibition drives a rapid increase in 2-OG levels by impairing lipoylation of the 2-OG dehydrogenase complex (OGDHc)-the rate limiting step for mitochondrial 2-OG metabolism. Rather than facilitating lipoate conjugation, ABHD11 associates with the OGDHc and maintains catalytic activity of lipoyl domain by preventing the formation of lipoyl adducts, highlighting ABHD11 as a regulator of functional lipoylation and 2-OG metabolism.
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Affiliation(s)
- Peter S J Bailey
- Cambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, CB2 0XY, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Cambridge, CB2 0AW, UK
| | - Brian M Ortmann
- Cambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, CB2 0XY, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Cambridge, CB2 0AW, UK
| | - Anthony W Martinelli
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Cambridge, CB2 0AW, UK
| | - Jack W Houghton
- Cambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, CB2 0XY, UK
| | - Ana S H Costa
- MRC Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Stephen P Burr
- Cambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, CB2 0XY, UK
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge, CB2 0XY, UK
| | - Robin Antrobus
- Cambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, CB2 0XY, UK
| | - Christian Frezza
- MRC Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - James A Nathan
- Cambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, CB2 0XY, UK.
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Cambridge, CB2 0AW, UK.
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171
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Katt TE, Spicer RL, Yetman AT, Ibrahimiye AN, Hammel JM, Robinson JA. Williams Syndrome and Neonatal Cardiac Surgery for Congenital Single Ventricle. JACC Case Rep 2020; 2:1716-1719. [PMID: 34317042 PMCID: PMC8312043 DOI: 10.1016/j.jaccas.2020.05.098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/06/2020] [Accepted: 05/20/2020] [Indexed: 12/23/2022]
Abstract
Williams syndrome (WS) is an arteriopathic derangement associated with supravalvular aortic stenosis and branch pulmonary stenosis. We describe double-outlet right ventricle with mitral atresia and aortic arch hypoplasia in an infant with WS. This case demonstrates the difficulty in managing patients with WS with complex cardiac defects. To our knowledge, this is the first reported single-ventricle physiology in a patient with WS. (Level of Difficulty: Advanced.)
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Affiliation(s)
- Taylor E Katt
- College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Robert L Spicer
- Dr. C.C. and Mabel L. Criss Heart Center, Children's Hospital and Medical Center, Omaha, Nebraska.,Department of Pediatrics, Division of Cardiology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Anji T Yetman
- Dr. C.C. and Mabel L. Criss Heart Center, Children's Hospital and Medical Center, Omaha, Nebraska.,Department of Pediatrics, Division of Cardiology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Ali N Ibrahimiye
- Dr. C.C. and Mabel L. Criss Heart Center, Children's Hospital and Medical Center, Omaha, Nebraska.,Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - James M Hammel
- Dr. C.C. and Mabel L. Criss Heart Center, Children's Hospital and Medical Center, Omaha, Nebraska.,Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jeffrey A Robinson
- Dr. C.C. and Mabel L. Criss Heart Center, Children's Hospital and Medical Center, Omaha, Nebraska.,Department of Pediatrics, Division of Cardiology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
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172
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Carvalho MM, Mazza J. Williams Syndrome Associated With Autism Spectrum Disorder: A Case Report and Review of the Literature. Cureus 2020; 12:e9641. [PMID: 32923241 PMCID: PMC7480893 DOI: 10.7759/cureus.9641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
We present a case report of patient H., a four-year-old male who was brought to the neurogenetics clinic of a university hospital. He was diagnosed with Williams syndrome (WS), which was confirmed by microarray; the patient was also diagnosed with autism spectrum disorder (ASD) by the pediatric neurology department. It is known that due to WS's phenotypical pattern, a co-diagnosis of both ASD and WS is apparently unlikely and often ignored. This case report discusses how this matter is addressed in the literature to understand the overlap of these two diseases, treating this case as a study model.
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173
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Ito M, Yagasaki H, Oba D, Hirai M, Kaneda H, Morioka I. Successful treatment of stage 4 rhabdomyosarcoma in a female with Williams-Beuren syndrome. Pediatr Blood Cancer 2020; 67:e28442. [PMID: 32525599 DOI: 10.1002/pbc.28442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/11/2020] [Accepted: 05/20/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Masataka Ito
- Department of Pediatrics, Nihon University Itabashi Hospital, Tokyo, Japan
| | - Hiroshi Yagasaki
- Department of Pediatrics, Nihon University Itabashi Hospital, Tokyo, Japan
| | - Daiju Oba
- Division of Medical Genetics, Saitama Children's Medical Center, Saitama, Japan
| | - Maiko Hirai
- Department of Pediatrics, Nihon University Itabashi Hospital, Tokyo, Japan
| | - Hide Kaneda
- Department of Pediatric Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Ichiro Morioka
- Department of Pediatrics, Nihon University Itabashi Hospital, Tokyo, Japan
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174
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Affiliation(s)
- Lance Alquran
- Department of Medicine, Hackensack Meridian Health Mountainside Medical Center, Montclair, New Jersey
| | - Rajiv M Mallipudi
- Department of Medicine, Yale School of Medicine, New Haven, Connecticut
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175
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Pangallo E, Parma B, Mariani M, Cianci P, De Paoli A, Maitz S, Fossati C, Panceri R, Agosti M, Selicorni A. Williams-Beuren Syndrome and celiac disease: A real association? Eur J Med Genet 2020; 63:103999. [PMID: 32622956 DOI: 10.1016/j.ejmg.2020.103999] [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: 04/03/2020] [Revised: 05/12/2020] [Accepted: 06/28/2020] [Indexed: 12/20/2022]
Abstract
Celiac disease (CD) screening in patients with Williams-Beuren Syndrome (WBS) is suggested, although data described in literature are discordant regarding CD prevalence in WBS. We retrospectively collected data from 101 WBS Italian patients [mean age: 13.5 years], to clarify the CD prevalence in a large cohort. All patients underwent a CD biochemical screening: IgA and anti-transglutaminase reflex antibodies (tTGA). CD-specific HLA typing was available for 42 patients. Small intestinal biopsy was performed in patients according to ESPGHAN guidelines. In 7 WBS patients an overt celiac disease was diagnosed. In 3 patients CD was confirmed by symptoms, HLA-DQ heterodimers and CD specific antibodies title, whereas in 4 patients, it was confirmed by a small intestinal biopsy. CD prevalence in our cohort is 6.9% (7/101). In 42/101 patients the CD-specific HLA typing was available, detecting 29/42 (69%) patients genetically predisposed to CD. The CD prevalence and CD-specific HLA prevalence are both higher than in the general population (p < 0.001; p < 0.001). Our cohort is the most numerous described confirming that the CD risk in WBS patients is significantly greater than in general population. Moreover, our HLA typing results, as well as scientific literature, suggest that the higher CD prevalence in WBS patients might not be intrinsically related to the genetic disease itself but with the higher HLA prevalence. However, HLA typing should be performed in bigger WBS cohorts to confirm this hypothesis. Our data confirms that HLA typing is mandatory in WBS patients and that CD screening should be performed only if genetically predisposed.
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Affiliation(s)
- Elisabetta Pangallo
- Department of Pediatric, 'F. Del Ponte' Hospital, University of Insubria, Varese, Italy
| | - Barbara Parma
- Department of Pediatric, ASST-Lariana, Sant'Anna Hospital, San Fermo Della Battaglia (Como), Italy.
| | - Milena Mariani
- Department of Pediatric, ASST-Lariana, Sant'Anna Hospital, San Fermo Della Battaglia (Como), Italy
| | - Paola Cianci
- Department of Pediatric, ASST-Lariana, Sant'Anna Hospital, San Fermo Della Battaglia (Como), Italy
| | - Anita De Paoli
- Department of Pediatric, ASST-Lariana, Sant'Anna Hospital, San Fermo Della Battaglia (Como), Italy
| | - Silvia Maitz
- Department of Pediatric, Fondazione MBMM San Gerardo Hospital, Monza, Italy
| | - Chiara Fossati
- Department of Pediatric, Fondazione MBMM San Gerardo Hospital, Monza, Italy
| | - Roberto Panceri
- Department of Pediatric, Fondazione MBMM San Gerardo Hospital, Monza, Italy
| | - Massimo Agosti
- Department of Pediatric, 'F. Del Ponte' Hospital, University of Insubria, Varese, Italy
| | - Angelo Selicorni
- Department of Pediatric, ASST-Lariana, Sant'Anna Hospital, San Fermo Della Battaglia (Como), Italy
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176
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Panfilov DS, Saushkin VV, Kozlov BN. Cardiovascular abnormalities in patient with Williams-Beuren syndrome. Eur J Cardiothorac Surg 2020; 58:196-198. [PMID: 31860063 DOI: 10.1093/ejcts/ezz349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/15/2019] [Accepted: 11/17/2019] [Indexed: 11/12/2022] Open
Abstract
We present a case of a 42-year-old male patient with severe supravalvular aortic stenosis associated with aortic and mitral valve stenosis as well as an anomalous origin of the right coronary ostium caused by deletion in the q11.23 region of the human chromosome 7 in a patient with Williams-Beuren syndrome.
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Affiliation(s)
- Dmitry S Panfilov
- Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Science, Tomsk, Russian Federation
| | - Viktor V Saushkin
- Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Science, Tomsk, Russian Federation
| | - Boris N Kozlov
- Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Science, Tomsk, Russian Federation
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177
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Deletion of the Williams Beuren syndrome critical region unmasks facioscapulohumeral muscular dystrophy. Eur J Paediatr Neurol 2020; 27:25-29. [PMID: 32553920 PMCID: PMC7427329 DOI: 10.1016/j.ejpn.2020.05.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 05/10/2020] [Accepted: 05/15/2020] [Indexed: 02/07/2023]
Abstract
Among 1339 unrelated cases accrued by the Italian National Registry for facioscapulohumeral muscular dystrophy (FSHD), we found three unrelated cases who presented signs of Williams-Beuren Syndrome (WBS) in early childhood and later developed FSHD. All three cases carry the molecular defects associated with the two disorders. The rarity of WBS and FSHD, 1 in 7500 and 1 in 20,000 respectively, makes a random association of the two diseases unlikely. These cases open novel and unexpected interpretation of genetic findings. The nonrandom association of both FSHD and WBS points at a gene co-expression network providing hints for the identification of modules and functionally enriched pathways in the two conditions.
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178
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Nir A, Barak B. White matter alterations in Williams syndrome related to behavioral and motor impairments. Glia 2020; 69:5-19. [PMID: 32589817 DOI: 10.1002/glia.23868] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/19/2020] [Accepted: 05/22/2020] [Indexed: 02/06/2023]
Abstract
Myelin is the electrical insulator surrounding the neuronal axon that makes up the white matter (WM) of the brain. It helps increase axonal conduction velocity (CV) by inducing saltatory conduction. Damage to the myelin sheath and WM is associated with many neurological and psychiatric disorders. Decreasing myelin deficits, and thus improving axonal conduction, has the potential to serve as a therapeutic mechanism for reducing the severity of some of these disorders. Myelin deficits have been previously linked to abnormalities in social behavior, suggesting an interplay between brain connectivity and sociability. This review focuses on Williams syndrome (WS), a genetic disorder characterized by neurocognitive characteristics and motor abnormalities, mainly known for its hypersociability characteristic. We discuss fundamental aspects of WM in WS and how its alterations can affect motor abilities and social behavior. Overall, findings regarding changes in myelin genes and alterations in WM structure in WS suggest new targets for drug therapy aimed at improving conduction properties and altering brain-activity synchronization in this disorder.
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Affiliation(s)
- Ariel Nir
- The Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Boaz Barak
- The Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel.,The School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel
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179
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Yusuff T, Jensen M, Yennawar S, Pizzo L, Karthikeyan S, Gould DJ, Sarker A, Gedvilaite E, Matsui Y, Iyer J, Lai ZC, Girirajan S. Drosophila models of pathogenic copy-number variant genes show global and non-neuronal defects during development. PLoS Genet 2020; 16:e1008792. [PMID: 32579612 PMCID: PMC7313740 DOI: 10.1371/journal.pgen.1008792] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/23/2020] [Indexed: 11/25/2022] Open
Abstract
While rare pathogenic copy-number variants (CNVs) are associated with both neuronal and non-neuronal phenotypes, functional studies evaluating these regions have focused on the molecular basis of neuronal defects. We report a systematic functional analysis of non-neuronal defects for homologs of 59 genes within ten pathogenic CNVs and 20 neurodevelopmental genes in Drosophila melanogaster. Using wing-specific knockdown of 136 RNA interference lines, we identified qualitative and quantitative phenotypes in 72/79 homologs, including 21 lines with severe wing defects and six lines with lethality. In fact, we found that 10/31 homologs of CNV genes also showed complete or partial lethality at larval or pupal stages with ubiquitous knockdown. Comparisons between eye and wing-specific knockdown of 37/45 homologs showed both neuronal and non-neuronal defects, but with no correlation in the severity of defects. We further observed disruptions in cell proliferation and apoptosis in larval wing discs for 23/27 homologs, and altered Wnt, Hedgehog and Notch signaling for 9/14 homologs, including AATF/Aatf, PPP4C/Pp4-19C, and KIF11/Klp61F. These findings were further supported by tissue-specific differences in expression patterns of human CNV genes, as well as connectivity of CNV genes to signaling pathway genes in brain, heart and kidney-specific networks. Our findings suggest that multiple genes within each CNV differentially affect both global and tissue-specific developmental processes within conserved pathways, and that their roles are not restricted to neuronal functions. Rare copy-number variants (CNVs), or large deletions and duplications in the genome, are associated with both neuronal and non-neuronal clinical features. Previous functional studies for these disorders have primarily focused on understanding the cellular mechanisms for neurological and behavioral phenotypes. To understand how genes within these CNVs contribute to developmental defects in non-neuronal tissues, we assessed 79 homologs of CNV and known neurodevelopmental genes in Drosophila models. We found that most homologs showed developmental defects when knocked down in the adult fly wing, ranging from mild size changes to severe wrinkled wings or lethality. Although a majority of tested homologs showed defects when knocked down specifically in wings or eyes, we found no correlation in the severity of the observed defects in these two tissues. A subset of the homologs showed disruptions in cellular processes in the developing fly wing, including alterations in cell proliferation, apoptosis, and cellular signaling pathways. Furthermore, human CNV genes also showed differences in gene expression patterns and interactions with signaling pathway genes across multiple human tissues. Our findings suggest that genes within CNV disorders affect global developmental processes in both neuronal and non-neuronal tissues.
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Affiliation(s)
- Tanzeen Yusuff
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Matthew Jensen
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Sneha Yennawar
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Lucilla Pizzo
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Siddharth Karthikeyan
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Dagny J. Gould
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Avik Sarker
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Erika Gedvilaite
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Yurika Matsui
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Department of Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Janani Iyer
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Zhi-Chun Lai
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Department of Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Santhosh Girirajan
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania, United States of America
- * E-mail:
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180
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López-Tobón A, Trattaro S, Testa G. The sociability spectrum: evidence from reciprocal genetic copy number variations. Mol Autism 2020; 11:50. [PMID: 32546261 PMCID: PMC7298749 DOI: 10.1186/s13229-020-00347-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/11/2020] [Indexed: 02/14/2023] Open
Abstract
Sociability entails some of the most complex behaviors processed by the central nervous system. It includes the detection, integration, and interpretation of social cues and elaboration of context-specific responses that are quintessentially species-specific. There is an ever-growing accumulation of molecular associations to autism spectrum disorders (ASD), from causative genes to endophenotypes across multiple functional layers; these however, have rarely been put in context with the opposite manifestation featured in hypersociability syndromes. Genetic copy number variations (CNVs) allow to investigate the relationships between gene dosage and its corresponding phenotypes. In particular, CNVs of the 7q11.23 locus, which manifest diametrically opposite social behaviors, offer a privileged window to look into the molecular substrates underlying the developmental trajectories of the social brain. As by definition sociability is studied in humans postnatally, the developmental fluctuations causing social impairments have thus far remained a black box. Here, we review key evidence of molecular players involved at both ends of the sociability spectrum, focusing on genetic and functional associations of neuroendocrine regulators and synaptic transmission pathways. We then proceed to propose the existence of a molecular axis centered around the paradigmatic dosage imbalances at the 7q11.23 locus, regulating networks responsible for the development of social behavior in humans and highlight the key role that neurodevelopmental models from reprogrammed pluripotent cells will play for its understanding.
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Affiliation(s)
- Alejandro López-Tobón
- Laboratory of Stem Cell Epigenetics, IEO, European Institute of Oncology, IRCCS, Milan, Italy.
- Department of Oncology and Hemato-oncology, Università degli studi di Milano, Milan, Italy.
| | - Sebastiano Trattaro
- Laboratory of Stem Cell Epigenetics, IEO, European Institute of Oncology, IRCCS, Milan, Italy.
- Department of Oncology and Hemato-oncology, Università degli studi di Milano, Milan, Italy.
| | - Giuseppe Testa
- Laboratory of Stem Cell Epigenetics, IEO, European Institute of Oncology, IRCCS, Milan, Italy.
- Department of Oncology and Hemato-oncology, Università degli studi di Milano, Milan, Italy.
- Human Technopole, Via Cristina Belgioioso 171, Milan, Italy.
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181
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Dunlap JD, Green MC, Shah AM, Kibby BT, Billmire DF. Cardiac arrest after induction of anesthesia in a 2-month-old infant with undiagnosed Williams syndrome. Ann Card Anaesth 2020; 22:210-212. [PMID: 30971606 PMCID: PMC6489387 DOI: 10.4103/aca.aca_38_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A 2-month-old male infant presented for elective repair of inguinal hernias. His preoperative medical history and physical examination were unremarkable. During induction of anesthesia, the infant sustained an adverse cardiac event. The event was characterized by tachycardia, hypotension, and massive ST-segment elevation. Despite vigorous resuscitation, spontaneous hemodynamic stability could not be achieved and extracorporeal membrane oxygenation was required. A transthoracic echocardiogram revealed severe hypoplasia of the ascending aorta. As effective cardiac function did not recover and there was evidence of diffuse ischemic brain injury, life support was withdrawn. Genetic testing performed postoperatively was definitive for Williams syndrome.
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Affiliation(s)
- Julie D Dunlap
- Department of Clinical Anaesthesia, Riley Hospital for Children, Indianapolis, IN 46202-5200, USA
| | - Morton C Green
- Department of Clinical Anaesthesia, Riley Hospital for Children, Indianapolis, IN 46202-5200, USA
| | - Aali M Shah
- Department of Clinical Anaesthesia, Riley Hospital for Children, Indianapolis, IN 46202-5200, USA
| | - Brandon T Kibby
- Department of Clinical Anaesthesia, Riley Hospital for Children, Indianapolis, IN 46202-5200, USA
| | - Deborah F Billmire
- Department of Surgery, Riley Hospital for Children, Indianapolis, IN 46202-5200, USA
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182
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Klein S, Mentrup B, Timmen M, Sherwood J, Lindemann O, Fobker M, Kronenberg D, Pap T, Raschke MJ, Stange R. Modulation of Transient Receptor Potential Channels 3 and 6 Regulates Osteoclast Function with Impact on Trabecular Bone Loss. Calcif Tissue Int 2020; 106:655-664. [PMID: 32140760 DOI: 10.1007/s00223-020-00673-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/08/2020] [Indexed: 01/09/2023]
Abstract
Enhanced osteoclast formation and function is a fundamental cause of alterations to bone structure and plays an important role in several diseases impairing bone quality. Recent work revealed that TRP calcium channels 3 and 6 might play a special role in this context. By analyzing the bone phenotype of TRPC6-deficient mice we detected a regulatory effect of TRPC3 on osteoclast function. These mice exhibit a significant decrease in bone volume per tissue volume, trabecular thickness and -number together with an increased number of osteoclasts found on the surface of trabecular bone. Primary bone marrow mononuclear cells from TRPC6-deficient mice showed enhanced osteoclastic differentiation and resorptive activity. This was confirmed in vitro by using TRPC6-deficient RAW 264.7 cells. TRPC6 deficiency led to an increase of TRPC3 in osteoclasts, suggesting that TRPC3 overcompensates for the loss of TRPC6. Raised intracellular calcium levels led to enhanced NFAT-luciferase reporter gene activity in the absence of TRPC6. In line with these findings inhibition of TRPC3 using the specific inhibitor Pyr3 significantly reduced intracellular calcium concentrations and normalized osteoclastic differentiation and resorptive activity of TRPC6-deficient cells. Interestingly, an up-regulation of TRPC3 could be detected in a cohort of patients with low bone mineral density by comparing micro array data sets of circulating human osteoclast precursor cells to those from patients with high bone mineral density, suggesting a noticeable contribution of TRP calcium channels on bone quality. These observations demonstrate a novel regulatory function of TRPC channels in the process of osteoclastic differentiation and bone loss.
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Affiliation(s)
- Sebastian Klein
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
- Institute of Pathology, University Hospital of Cologne, Cologne, Germany
| | - Birgit Mentrup
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Melanie Timmen
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Joanna Sherwood
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Otto Lindemann
- Institute of Physiology II, University Münster, Münster, Germany
| | - Manfred Fobker
- Center for Laboratory Medicine, University Hospital Münster, Münster, Germany
| | - Daniel Kronenberg
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Thomas Pap
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Michael J Raschke
- Department of Trauma, Hand and Reconstructive Surgery University Hospital Münster, Münster, Germany
| | - Richard Stange
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany.
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183
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Ojha V, Pandey NN, Verma M, Taxak A, Kumar S, Ramakrishnan S. Spontaneous pulmonary artery aneurysm in a case of Williams syndrome. J Cardiovasc Comput Tomogr 2020; 14:e170-e171. [PMID: 32360352 DOI: 10.1016/j.jcct.2020.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Vineeta Ojha
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Niraj Nirmal Pandey
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Mansi Verma
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Avichala Taxak
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Sanjeev Kumar
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India.
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184
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Granat L, Hunt RJ, Bateman JM. Mitochondrial retrograde signalling in neurological disease. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190415. [PMID: 32362256 DOI: 10.1098/rstb.2019.0415] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Neuronal mitochondrial dysfunction causes primary mitochondrial diseases and likely contributes to neurodegenerative diseases including Parkinson's and Alzheimer's disease. Mitochondrial dysfunction has also been documented in neurodevelopmental disorders such as tuberous sclerosis complex and autism spectrum disorder. Only symptomatic treatments exist for neurodevelopmental disorders, while neurodegenerative diseases are largely untreatable. Altered mitochondrial function activates mitochondrial retrograde signalling pathways, which enable signalling to the nucleus to reprogramme nuclear gene expression. In this review, we discuss the role of mitochondrial retrograde signalling in neurological diseases. We summarize how mitochondrial dysfunction contributes to neurodegenerative disease and neurodevelopmental disorders. Mitochondrial signalling mechanisms that have relevance to neurological disease are discussed. We then describe studies documenting retrograde signalling pathways in neurons and glia, and in animal models of neuronal mitochondrial dysfunction and neurological disease. Finally, we suggest how specific retrograde signalling pathways can be targeted to develop novel treatments for neurological diseases. This article is part of the theme issue 'Retrograde signalling from endosymbiotic organelles'.
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Affiliation(s)
- Lucy Granat
- Maurice Wohl Clinical Neuroscience Institute, King's College London, 125 Coldharbour Lane, London SE5 9NU, UK
| | - Rachel J Hunt
- Maurice Wohl Clinical Neuroscience Institute, King's College London, 125 Coldharbour Lane, London SE5 9NU, UK
| | - Joseph M Bateman
- Maurice Wohl Clinical Neuroscience Institute, King's College London, 125 Coldharbour Lane, London SE5 9NU, UK
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185
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Zimpfer D, Alexander PMA, Davies RR, Dipchand AI, Feingold B, Joong A, Lord K, Kirk R, Scales A, Shih R, Miera O. Pediatric donor management to optimize donor heart utilization. Pediatr Transplant 2020; 24:e13679. [PMID: 32198844 DOI: 10.1111/petr.13679] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/19/2020] [Accepted: 01/21/2020] [Indexed: 12/25/2022]
Abstract
Optimal management of pediatric cardiac donors is essential in order to maximize donor heart utilization and minimize the rate of discarded organs. This review was performed after a systematic literature review and gives a detailed overview on current practices and guidelines. The review focuses on optimal monitoring of pediatric donors, donor workup, hormonal replacement, and obliterating the adverse effects of brain death. The current evidence on catecholamine support and thyroid hormone replacement is also discussed. Recognizing and addressing this shall help in a standardized approach toward donor management and optimal utilization of pediatric heart donors organs.
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Affiliation(s)
- Daniel Zimpfer
- Department of Cardiac Surgery, Pediatric Heart Center Vienna, Vienna, Austria
| | - Peta M A Alexander
- Department of Pediatric Cardiology, Boston Children's Hospital Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Ryan R Davies
- Department of Cardiovascular and Thoracic Surgery, Children's Medical Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Anne I Dipchand
- Labatt Family Heart Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Brian Feingold
- Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Anna Joong
- Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA
| | | | - Richard Kirk
- Division of Pediatric Cardiology, Children's Medical Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Angie Scales
- Paediatric and Neonatal Donation and Transplantation, Organ Donation and Transplantation, NHS Blood and Transplant, London, UK
| | - Renata Shih
- Congenital Heart Center, University of Florida, Gainesville, FL, USA
| | - Oliver Miera
- Department of Congenital Heart Disease/Pediatric Cardiology, Deutsches Herzzentrum, Berlin, Germany
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186
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Kimura R, Tomiwa K, Inoue R, Suzuki S, Nakata M, Awaya T, Kato T, Okazaki S, Heike T, Hagiwara M. Dysregulation of the oxytocin receptor gene in Williams syndrome. Psychoneuroendocrinology 2020; 115:104631. [PMID: 32114409 DOI: 10.1016/j.psyneuen.2020.104631] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 02/06/2020] [Accepted: 02/19/2020] [Indexed: 10/25/2022]
Abstract
Williams syndrome (WS) is caused by a microdeletion of chromosome 7q11.23, and is characterized by various physical and cognitive symptoms. In particular, WS is characterized by hypersocial (overfriendly) behavior; WS has gained attention as aspects of the WS phenotype contrast with those of autism spectrum disorder (ASD). The oxytocin receptor gene (OXTR) contributes to social phenotypes in relation to regulation of oxytocin (OXT) secretion. Additionally, mounting evidence has recently shown that DNA methylation of OXTR is associated with human social behavior. However, the role of OXTR in WS remains unclear. This study investigated the regulation of OXTR in WS. We examined the gene expression levels in blood from WS patients and controls, and then analyzed the methylation levels in two independent cohorts. We showed that OXTR was down-regulated and hypermethylated in WS patients compared to controls. Our findings may provide an insight into OXTR in mediating complex social phenotypes in WS.
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Affiliation(s)
- Ryo Kimura
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan.
| | - Kiyotaka Tomiwa
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan; Department of Child Neurology, Osaka City General Hospital, Osaka 534-0021 Japan; Todaiji Ryoiku Hospital for Children, Nara 630-8211, Japan
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Agriculture and Life Science, Kyoto Prefectural University, Kyoto, 606-8522, Japan
| | - Shiho Suzuki
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Masatoshi Nakata
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Tomonari Awaya
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Takeo Kato
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan; Department of Pediatrics, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki 660-8550, Japan
| | - Shin Okazaki
- Department of Child Neurology, Osaka City General Hospital, Osaka 534-0021 Japan
| | - Toshio Heike
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan; Department of Pediatrics, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki 660-8550, Japan
| | - Masatoshi Hagiwara
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan.
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187
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Wrona D, Pastukhov O, Pritchard RS, Raimondi F, Tchinda J, Jinek M, Siler U, Reichenbach J. CRISPR-Directed Therapeutic Correction at the NCF1 Locus Is Challenged by Frequent Incidence of Chromosomal Deletions. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 17:936-943. [PMID: 32420407 PMCID: PMC7217921 DOI: 10.1016/j.omtm.2020.04.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 04/22/2020] [Indexed: 12/18/2022]
Abstract
Resurrection of non-processed pseudogenes may increase the efficacy of therapeutic gene editing, upon simultaneous targeting of a mutated gene and its highly homologous pseudogenes. To investigate the potency of this approach for clinical gene therapy of human diseases, we corrected a pseudogene-associated disorder, the immunodeficiency p47phox-deficient chronic granulomatous disease (p47phox CGD), using clustered regularly interspaced short palindromic repeats-associated nuclease Cas9 (CRISPR-Cas9) to target mutated neutrophil cytosolic factor 1 (NCF1). Being separated by less than two million base pairs, NCF1 and two pseudogenes are closely co-localized on chromosome 7. In healthy people, a two-nucleotide GT deletion (ΔGT) is present in the NCF1B and NCF1C pseudogenes only. In the majority of patients with p47phox CGD, the NCF1 gene is inactivated due to a ΔGT transfer from one of the two non-processed pseudogenes. Here we demonstrate that concurrent targeting and correction of mutated NCF1 and its pseudogenes results in therapeutic CGD phenotype correction, but also causes potentially harmful chromosomal deletions between the targeted loci in a p47phox-deficient CGD cell line model. Therefore, development of genome-editing-based treatment of pseudogene-related disorders mandates thorough safety examination, as well as technological advances, limiting concurrent induction of multiple double-strand breaks on a single chromosome.
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Affiliation(s)
- Dominik Wrona
- Division of Gene and Cell Therapy, Institute for Regenerative Medicine, University of Zurich, 8952 Schlieren-Zurich, Switzerland
| | - Oleksandr Pastukhov
- Division of Gene and Cell Therapy, Institute for Regenerative Medicine, University of Zurich, 8952 Schlieren-Zurich, Switzerland
| | | | - Federica Raimondi
- Division of Gene and Cell Therapy, Institute for Regenerative Medicine, University of Zurich, 8952 Schlieren-Zurich, Switzerland
| | - Joëlle Tchinda
- Department of Oncology, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
| | - Martin Jinek
- Department of Biochemistry, University of Zurich, 8057 Zurich, Switzerland
| | - Ulrich Siler
- Division of Gene and Cell Therapy, Institute for Regenerative Medicine, University of Zurich, 8952 Schlieren-Zurich, Switzerland
| | - Janine Reichenbach
- Division of Gene and Cell Therapy, Institute for Regenerative Medicine, University of Zurich, 8952 Schlieren-Zurich, Switzerland
- Department of Somatic Gene Therapy, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Corresponding author: Janine Reichenbach, Division of Gene and Cell Therapy, Institute for Regenerative Medicine, University of Zurich, 8952 Schlieren-Zurich, Switzerland.
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188
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Mariasina SS, Chang CF, Petrova OA, Efimov SV, Klochkov VV, Kechko OI, Mitkevich VA, Sergiev PV, Dontsova OA, Polshakov VI. Williams-Beuren syndrome-related methyltransferase WBSCR27: cofactor binding and cleavage. FEBS J 2020; 287:5375-5393. [PMID: 32255258 DOI: 10.1111/febs.15320] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/20/2020] [Accepted: 03/30/2020] [Indexed: 11/28/2022]
Abstract
Williams-Beuren syndrome, characterized by numerous physiological and mental problems, is caused by the heterozygous deletion of chromosome region 7q11.23, which results in the disappearance of 26 protein-coding genes. Protein WBSCR27 is a product of one of these genes whose biological function has not yet been established and for which structural information has been absent until now. Using NMR, we investigated the structural and functional properties of murine WBSCR27. For protein in the apo form and in a complex with S-(5'-adenosyl)-l-homocysteine (SAH), a complete NMR resonance assignment has been obtained and the secondary structure has been determined. This information allows us to attribute WBSCR27 to Class I methyltransferases. The interaction of WBSCR27 with the cofactor S-(5'-adenosyl)-l-methionine (SAM) and its metabolic products - SAH, 5'-deoxy-5'-methylthioadenosine (MTA) and 5'-deoxyadenosine (5'dAdo) - was studied by NMR and isothermal titration calorimetry. SAH binds WBSCR27 much tighter than SAM, leaving open the question of cofactor turnover in the methylation reaction. One possible answer to this question is the presence of weak but detectable nucleosidase activity for WBSCR27. We found that the enzyme catalyses the cleavage of the adenine moiety from SAH, MTA and 5'dAdo, similar to the action of bacterial SAH/MTA nucleosidases. We also found that the binding of SAM or SAH causes a significant change in the structure of WBSCR27 and in the conformational mobility of the protein fragments, which can be attributed to the substrate recognition site. This indicates that the binding of the cofactor modulates the folding of the substrate-recognizing region of the enzyme.
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Affiliation(s)
| | - Chi-Fon Chang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | | | - Sergey V Efimov
- NMR Laboratory, Institute of Physics, Kazan Federal University, Russia
| | | | - Olga I Kechko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Vladimir A Mitkevich
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Petr V Sergiev
- M.V. Lomonosov Moscow State University, Russia.,Skolkovo Institute of Science and Technology, Moscow, Russia
| | - Olga A Dontsova
- M.V. Lomonosov Moscow State University, Russia.,Skolkovo Institute of Science and Technology, Moscow, Russia
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189
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Ali MJ. Lacrimal drainage system anomalies in Williams-Beuren syndrome. Orbit 2020; 40:159-161. [PMID: 32290740 DOI: 10.1080/01676830.2020.1755317] [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: 10/24/2022]
Abstract
Williams-Beuren syndrome is a rare multi-system disorder affecting 1:10000 to 1:20000 live-births. The cause is de novo contiguous gene deletion on the long arm of chromosome 7 (7q11.23). It typically manifests with dysmorphic facies and predominantly involves the connective tissues, cardiovascular and nervous systems. The published literature reveals that lacrimal drainage anomalies are exceptionally rare and not much is known of those reported. The present case describes multiple lacrimal drainage anomalies in a child with Williams-Beuren syndrome.
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Affiliation(s)
- Mohammad Javed Ali
- Govindram Seksaria Institute of Dacryology, L.V. Prasad Eye Institute , Hyderabad, India
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190
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Genes dysregulated in the blood of people with Williams syndrome are enriched in protein-coding genes positively selected in humans. Eur J Med Genet 2020; 63:103828. [DOI: 10.1016/j.ejmg.2019.103828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/09/2019] [Accepted: 12/21/2019] [Indexed: 12/29/2022]
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191
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Abstract
Williams syndrome is a multisystem, congenital disorder which is commonly associated with arterial stenoses: supravalvar aortic stenosis and peripheral pulmonary artery stenosis. Venous abnormalities have not been previously reported in children with Williams syndrome. We present a case of a 3-year-old girl with Williams syndrome and diffuse venous ectasia as detected by MRI.
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192
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Bikle D, Christakos S. New aspects of vitamin D metabolism and action - addressing the skin as source and target. Nat Rev Endocrinol 2020; 16:234-252. [PMID: 32029884 DOI: 10.1038/s41574-019-0312-5] [Citation(s) in RCA: 163] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/12/2019] [Indexed: 12/19/2022]
Abstract
Vitamin D has a key role in stimulating calcium absorption from the gut and promoting skeletal health, as well as many other important physiological functions. Vitamin D is produced in the skin. It is subsequently metabolized to its hormonally active form, 1,25-dihydroxyvitamin D (1,25(OH)2D), by the 1-hydroxylase and catabolized by the 24-hydroxylase. In this Review, we pay special attention to the effect of mutations in these enzymes and their clinical manifestations. We then discuss the role of vitamin D binding protein in transporting vitamin D and its metabolites from their source to their targets, the free hormone hypothesis for cell entry and HSP70 for intracellular transport. This is followed by discussion of the vitamin D receptor (VDR) that mediates the cellular actions of 1,25(OH)2D. Cell-specific recruitment of co-regulatory complexes by liganded VDR leads to changes in gene expression that result in distinct physiological actions by 1,25(OH)2D, which are disrupted by mutations in the VDR. We then discuss the epidermis and hair follicle, to provide a non-skeletal example of a tissue that expresses VDR that not only makes vitamin D but also can metabolize it to its hormonally active form. This enables vitamin D to regulate epidermal differentiation and hair follicle cycling and, in so doing, to promote barrier function, wound healing and hair growth, while limiting cancer development.
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Affiliation(s)
- Daniel Bikle
- Departments of Medicine and Dermatology, University of California San Francisco, San Francisco, CA, USA.
- VA Medical Center, San Francisco, CA, USA.
| | - Sylvia Christakos
- Departments of Microbiology, Biochemistry and Molecular Genetics, New Jersey Medical School, Rutgers, the State University of New Jersey, Newark, NJ, USA
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193
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Decreased density of cholinergic interneurons in striatal territories in Williams syndrome. Brain Struct Funct 2020; 225:1019-1032. [PMID: 32189114 DOI: 10.1007/s00429-020-02055-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 02/27/2020] [Indexed: 12/22/2022]
Abstract
Williams syndrome (WS) is a rare neurodevelopmental disorder caused by the hemideletion of approximately 25-28 genes at 7q11.23. Its unusual social and cognitive phenotype is most strikingly characterized by the disinhibition of social behavior, in addition to reduced global IQ, with a relative sparing of language ability. Hypersociality and increased social approach behavior in WS may represent a unique inability to inhibit responses to specific social stimuli, which is likely associated with abnormalities of frontostriatal circuitry. The striatum is characterized by a diversity of interneuron subtypes, including inhibitory parvalbumin-positive interneurons (PV+) and excitatory cholinergic interneurons (Ch+). Animal model research has identified an important role for these specialized cells in regulating social approach behavior. Previous research in humans identified a depletion of interneuron subtypes associated with neuropsychiatric disorders. Here, we examined the density of PV+ and Ch+ interneurons in the striatum of 13 WS and neurotypical (NT) subjects. We found a significant reduction in the density of Ch+ interneurons in the medial caudate nucleus and nucleus accumbens, important regions receiving cortical afferents from the orbitofrontal and ventromedial prefrontal cortex, and circuitry involved in language and reward systems. No significant difference in the distribution of PV+ interneurons was found. The pattern of decreased Ch+ interneuron densities in WS differs from patterns of interneuron depletion found in other disorders.
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194
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de Sousa Lima Strafacci A, Fernandes Camargo J, Bertapelli F, Guerra Júnior G. Growth assessment in children with Williams-Beuren syndrome: a systematic review. J Appl Genet 2020; 61:205-212. [PMID: 32157657 DOI: 10.1007/s13353-020-00551-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 01/28/2020] [Accepted: 02/12/2020] [Indexed: 02/04/2023]
Abstract
Williams-Beuren syndrome (WBS) is a rare genetic disease caused by a sporadic heterozygous microdeletion in 7q11.23. It is characterized by distinctive facial appearance, cardiopathy, short stature, intellectual disability, and endocrine abnormalities. To evaluate the growth pattern of patients with WBS and to identify the prevalence of malnutrition, overweight, and obesity in this population, a systematic review of studies published in English, between 1987 and 2018, was performed following the PRISMA protocol using the PubMed, Cochrane, and BIREME databases. Original articles and articles that evaluated growth status using weight, or height, or head circumference (HC), or body mass index (BMI) of individuals with WBS were included. Case reports, articles with data from other syndromes, and articles that did not present as a central theme the evaluation of growth were not included. WBS presented specific growth pattern, characterized by intrauterine growth restriction, low weight, length, and HC at birth. This global growth delay persisted during childhood and adolescence. BMI was not different to the reference population, and obesity was not observed in childhood. The mechanisms that determine this typical growth pattern are not totally clear; however, the typical pubertal development of these patients and the intrinsic and secondary lesions caused by microdeletion at 7q11.23 seem to be the major factors involved. Conclusion: Patients with WBS have a growth pattern different from the general reference population. The reference charts for normal population should not be used for WBS patients because it often underestimate their growth. Specific growth charts for WBS patients are necessary.
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Affiliation(s)
- Amanda de Sousa Lima Strafacci
- Department of Pediatrics, School of Medical Sciences (FCM), State University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil.
| | | | - Fábio Bertapelli
- Laboratory of Growth and Development, Center for Investigation in Pediatrics (CIPED), FCM, UNICAMP, Sao Paulo, Campinas, Brazil
| | - Gil Guerra Júnior
- Department of Pediatrics, School of Medical Sciences (FCM), State University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil.,Laboratory of Growth and Development, Center for Investigation in Pediatrics (CIPED), FCM, UNICAMP, Sao Paulo, Campinas, Brazil
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195
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Mild macrocytosis in Williams-Beuren syndrome. Eur J Med Genet 2020; 63:103740. [DOI: 10.1016/j.ejmg.2019.103740] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 08/05/2019] [Accepted: 08/13/2019] [Indexed: 11/23/2022]
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196
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Hui K, Katayama Y, Nakayama KI, Nomura J, Sakurai T. Characterizing vulnerable brain areas and circuits in mouse models of autism: Towards understanding pathogenesis and new therapeutic approaches. Neurosci Biobehav Rev 2020; 110:77-91. [DOI: 10.1016/j.neubiorev.2018.08.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 07/30/2018] [Accepted: 08/02/2018] [Indexed: 12/19/2022]
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197
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An Examination of Social Skills, Friendship Quality, and Loneliness for Adults with Williams Syndrome. J Autism Dev Disord 2020; 50:3649-3660. [PMID: 32076956 DOI: 10.1007/s10803-020-04416-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Individuals with Williams Syndrome (WS) are hypersocial, overfriendly, and experience social skills deficits that may adversely impact their social outcomes. This study examined the relation between social skills, friendship quality, and feelings of loneliness for adults with WS as reported by 114 parent-adult with WS dyads. Results indicate that although most friends do not live close-by, adults with WS have good quality friendships and do not report high feelings of loneliness. Positive friendship qualities were found to partially mediate the relationship between social skills impairments and social feelings of loneliness. Findings indicate that although adults with WS experience social skills deficits and struggle to maintain friendships in their immediate community, they still report positive friendship qualities and low feelings of loneliness.
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198
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Ramakrishnan K, Yerebakan C. Commentary: You will see them again-sooner or later. JTCVS Tech 2020; 3:83-84. [PMID: 34317824 PMCID: PMC8302862 DOI: 10.1016/j.xjtc.2019.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 12/08/2019] [Accepted: 12/12/2019] [Indexed: 10/25/2022] Open
Affiliation(s)
- Karthik Ramakrishnan
- Department of Cardiovascular Surgery, Children's National Heart Institute, Children's National Hospital, Washington, DC.,Department of Surgery and Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Can Yerebakan
- Department of Cardiovascular Surgery, Children's National Heart Institute, Children's National Hospital, Washington, DC.,Department of Surgery and Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, DC
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199
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Lugo M, Wong ZC, Billington CJ, Parrish PCR, Muldoon G, Liu D, Pober BR, Kozel BA. Social, neurodevelopmental, endocrine, and head size differences associated with atypical deletions in Williams-Beuren syndrome. Am J Med Genet A 2020; 182:1008-1020. [PMID: 32077592 DOI: 10.1002/ajmg.a.61522] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/22/2020] [Accepted: 01/28/2020] [Indexed: 12/21/2022]
Abstract
Williams-Beuren syndrome (WBS) is a multisystem disorder caused by a hemizygous deletion on 7q11.23 encompassing 26-28 genes. An estimated 2-5% of patients have "atypical" deletions, which extend in the centromeric and/or telomeric direction from the WBS critical region. To elucidate clinical differentiators among these deletion types, we evaluated 10 individuals with atypical deletions in our cohort and 17 individuals with similarly classified deletions previously described in the literature. Larger deletions in either direction often led to more severe developmental delays, while deletions containing MAGI2 were associated with infantile spasms and seizures in patients. In addition, head size was notably smaller in those with centromeric deletions including AUTS2. Because children with atypical deletions were noted to be less socially engaged, we additionally sought to determine how atypical deletions relate to social phenotypes. Using the Social Responsiveness Scale-2, raters scored individuals with atypical deletions as having different social characteristics to those with typical WBS deletions (p = .001), with higher (more impaired) scores for social motivation (p = .005) in the atypical deletion group. In recognizing these distinctions, physicians can better identify patients, including those who may already carry a clinical or FISH WBS diagnosis, who may benefit from additional molecular evaluation, screening, and therapy. In addition to the clinical findings, we note mild endocrine findings distinct from those typically seen in WBS in several patients with telomeric deletions that included POR. Further study in additional telomeric deletion cases will be needed to confirm this observation.
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Affiliation(s)
- Michael Lugo
- Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina.,Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - Zoë C Wong
- Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - Charles J Billington
- Medical Genetics and Genomic Medicine Training Program, National Human Genetics Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Phoebe C R Parrish
- Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland.,Department of Genome Sciences, University of Washington, Seattle, Washington
| | - Glennis Muldoon
- Neurodevelopmental and Behavioral Phenotyping Service, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland
| | - Delong Liu
- Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - Barbara R Pober
- Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts
| | - Beth A Kozel
- Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland.,Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
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200
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Zanetti A, D'Avanzo F, Bertoldi L, Zampieri G, Feltrin E, De Pascale F, Rampazzo A, Forzan M, Valle G, Tomanin R. Setup and Validation of a Targeted Next-Generation Sequencing Approach for the Diagnosis of Lysosomal Storage Disorders. J Mol Diagn 2020; 22:488-502. [PMID: 32036093 DOI: 10.1016/j.jmoldx.2020.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 11/07/2019] [Accepted: 01/11/2020] [Indexed: 12/14/2022] Open
Abstract
Lysosomal storage disorders (LSDs) are monogenic diseases, due to accumulation of specific undegraded substrates into lysosomes. LSD diagnosis could take several years because of both poor knowledge of these diseases and shared clinical features. The diagnostic approach includes clinical evaluations, biochemical tests, and genetic analysis of the suspected gene. In this study, we evaluated an LSD targeted sequencing panel as a tool capable to potentially reverse this classic diagnostic route. The panel includes 50 LSD genes and 230 intronic sequences conserved among 33 placental mammals. For the validation phase, 56 positive controls, 13 biochemically diagnosed patients, and nine undiagnosed patients were analyzed. Disease-causing variants were identified in 66% of the positive control alleles and in 62% of the biochemically diagnosed patients. Three undiagnosed patients were diagnosed. Eight patients undiagnosed by the panel were analyzed by whole exome sequencing: for two of them, the disease-causing variants were identified. Five patients, undiagnosed by both panel and exome analyses, were investigated through array comparative genomic hybridization: one of them was diagnosed. Conserved intronic fragment analysis, performed in cases unresolved by the first-level analysis, evidenced no candidate intronic variants. Targeted sequencing has low sequencing costs and short sequencing time. However, a coverage >60× to 80× must be ensured and/or Sanger validation should be performed. Moreover, it must be supported by a thorough clinical phenotyping.
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Affiliation(s)
- Alessandra Zanetti
- Laboratory of Diagnosis and Therapy of Lysosomal Disorders, University of Padova, Padova, Italy; Fondazione Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
| | - Francesca D'Avanzo
- Laboratory of Diagnosis and Therapy of Lysosomal Disorders, University of Padova, Padova, Italy; Fondazione Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
| | - Loris Bertoldi
- Department of Biology and CRIBI Biotechnology Centre, University of Padova, Padova, Italy
| | - Guido Zampieri
- Department of Biology and CRIBI Biotechnology Centre, University of Padova, Padova, Italy
| | - Erika Feltrin
- Department of Biology and CRIBI Biotechnology Centre, University of Padova, Padova, Italy
| | - Fabio De Pascale
- Department of Biology and CRIBI Biotechnology Centre, University of Padova, Padova, Italy
| | - Angelica Rampazzo
- Infantile Neuropsychiatric Unit, Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - Monica Forzan
- Clinical Genetics Unit, University Hospital of Padua, Padua, Italy
| | - Giorgio Valle
- Department of Biology and CRIBI Biotechnology Centre, University of Padova, Padova, Italy
| | - Rosella Tomanin
- Laboratory of Diagnosis and Therapy of Lysosomal Disorders, University of Padova, Padova, Italy; Fondazione Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy.
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