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Coelho DRA, Renet C, López-Rodríguez S, Cassano P, Vieira WF. Transcranial photobiomodulation for neurodevelopmental disorders: a narrative review. Photochem Photobiol Sci 2024; 23:1609-1623. [PMID: 39009808 DOI: 10.1007/s43630-024-00613-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 07/07/2024] [Indexed: 07/17/2024]
Abstract
BACKGROUND Neurodevelopmental disorders (NDDs) such as autism spectrum disorder (ASD), attention-deficit/hyperactivity disorder (ADHD), and Down syndrome (DS) significantly impact social, communicative, and behavioral functioning. Transcranial photobiomodulation (t-PBM) with near-infrared light is a promising non-invasive neurostimulation technique for neuropsychiatric disorders, including NDDs. This narrative review aimed to examine the preclinical and clinical evidence of photobiomodulation (PBM) in treating NDDs. METHODS A comprehensive search across six databases was conducted, using a combination of MeSH terms and title/abstract keywords: "photobiomodulation", "PBM", "neurodevelopmental disorders", "NDD", and others. Studies applying PBM to diagnosed NDD cases or animal models replicating NDDs were included. Protocols, reviews, studies published in languages other than English, and studies not evaluating clinical or cognitive outcomes were excluded. RESULTS Nine studies were identified, including one preclinical and eight clinical studies (five on ASD, two on ADHD, and one on DS). The reviewed studies encompassed various t-PBM parameters (wavelengths: 635-905 nm) and targeted primarily frontal cortex areas. t-PBM showed efficacy in improving disruptive behavior, social communication, cognitive rigidity, sleep quality, and attention in ASD; in enhancing attention in ADHD; and in improving motor skills and verbal fluency in DS. Minimal adverse effects were reported. Proposed mechanisms involve enhanced mitochondrial function, modulated oxidative stress, and reduced neuroinflammation. CONCLUSIONS t-PBM emerges as a promising intervention for NDDs, with potential therapeutic effects across ASD, ADHD, and DS. These findings underscore the need for further research, including larger-scale, randomized sham-controlled clinical trials with comprehensive biomarker analyses, to optimize treatment parameters and understand the underlying mechanisms associated with the effects of t-PBM.
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Affiliation(s)
- David Richer Araujo Coelho
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, USA
- Department of Psychiatry, Harvard Medical School, Boston, USA
- Harvard T. H. Chan School of Public Health, Boston, USA
| | - Christian Renet
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, USA
- Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Sergi López-Rodríguez
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, USA
- Department of Psychiatry, Bellvitge University Hospital, Bellvitge Biomedical Research Institute, Carlos III Health Institute, Institute of Neurosciences, University of Barcelona, Barcelona, Spain
| | - Paolo Cassano
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, USA
- Department of Psychiatry, Harvard Medical School, Boston, USA
| | - Willians Fernando Vieira
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, USA.
- Department of Psychiatry, Harvard Medical School, Boston, USA.
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
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2
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Sukreet S, Rafii MS, Rissman RA. From understanding to action: Exploring molecular connections of Down syndrome to Alzheimer's disease for targeted therapeutic approach. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2024; 16:e12580. [PMID: 38623383 PMCID: PMC11016820 DOI: 10.1002/dad2.12580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 04/17/2024]
Abstract
Down syndrome (DS) is caused by a third copy of chromosome 21. Alzheimer's disease (AD) is a neurodegenerative condition characterized by the deposition of amyloid-beta (Aβ) plaques and neurofibrillary tangles in the brain. Both disorders have elevated Aβ, tau, dysregulated immune response, and inflammation. In people with DS, Hsa21 genes like APP and DYRK1A are overexpressed, causing an accumulation of amyloid and neurofibrillary tangles, and potentially contributing to an increased risk of AD. As a result, people with DS are a key demographic for research into AD therapeutics and prevention. The molecular links between DS and AD shed insights into the underlying causes of both diseases and highlight potential therapeutic targets. Also, using biomarkers for early diagnosis and treatment monitoring is an active area of research, and genetic screening for high-risk individuals may enable earlier intervention. Finally, the fundamental mechanistic parallels between DS and AD emphasize the necessity for continued research into effective treatments and prevention measures for DS patients at risk for AD. Genetic screening with customized therapy approaches may help the DS population in current clinical studies and future biomarkers.
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Affiliation(s)
- Sonal Sukreet
- Department of NeurosciencesUniversity of California‐San DiegoLa JollaCaliforniaUSA
| | - Michael S. Rafii
- Department of Neurology, Alzheimer's Therapeutic Research InstituteKeck School of Medicine of the University of Southern CaliforniaSan DiegoCaliforniaUSA
| | - Robert A. Rissman
- Department of NeurosciencesUniversity of California‐San DiegoLa JollaCaliforniaUSA
- Department Physiology and Neuroscience, Alzheimer’s Therapeutic Research InstituteKeck School of Medicine of the University of Southern CaliforniaSan DiegoCaliforniaUSA
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3
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Del Hoyo Soriano L, Sterling A, Edgin J, Hamilton DR, Berry-Kravis E, Dimachkie Nunnally A, Thurman AJ, Abbeduto L. Associations Among Sex, Cognitive Ability, and Autism Symptoms in Individuals with Down Syndrome. J Autism Dev Disord 2024; 54:301-311. [PMID: 36315322 PMCID: PMC10184887 DOI: 10.1007/s10803-022-05779-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2022] [Indexed: 11/07/2022]
Abstract
This study explores sex-differences in (a) rates and profiles of autism symptoms as well as in (b) the contribution of intellectual quotient (IQ) to autism symptom presentation in Down syndrome (DS). Participants were 40 males and 38 females with DS, aged 6 to 23 years. Autism symptoms were rated through the Autism Diagnostic Observation Schedule-Second Edition (ADOS-2). Results show no sex differences in the ADOS-2 Calibrated Severity Scores (CSS). However, only females with DS who are classified as DS-Only have higher scores on verbal IQ than those classified as DS + autism. Furthermore, associations between IQ and all CSSs are found for females, but not for males. Findings suggest that verbal cognition may play differential roles for females and males with DS.
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Affiliation(s)
- Laura Del Hoyo Soriano
- MIND Institute, University of California Davis, 2825 50th Street, Sacramento, CA, USA.
- Department of Psychiatry and Behavioral Sciences, University of California, Davis Health, Sacramento, CA, USA.
| | - Audra Sterling
- Waisman Center, Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI, USA
| | - Jamie Edgin
- Department of Psychology, University of Arizona, Tucson, AZ, USA
| | - Debra R Hamilton
- Department of Human Genetics, School of Medicine, Emory University, Atlanta, GA, USA
| | - Elizabeth Berry-Kravis
- Departments of Pediatrics, Neurological Sciences and Biochemistry, Rush University Medical Center, Chicago, USA
| | | | - Angela John Thurman
- MIND Institute, University of California Davis, 2825 50th Street, Sacramento, CA, USA
- Department of Psychiatry and Behavioral Sciences, University of California, Davis Health, Sacramento, CA, USA
| | - Leonard Abbeduto
- MIND Institute, University of California Davis, 2825 50th Street, Sacramento, CA, USA
- Department of Psychiatry and Behavioral Sciences, University of California, Davis Health, Sacramento, CA, USA
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4
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Rozensztrauch A, Wieczorek K, Twardak I, Śmigiel R. Health-related quality of life and family functioning of primary caregivers of children with down syndrome. Front Psychiatry 2023; 14:1267583. [PMID: 38161724 PMCID: PMC10756234 DOI: 10.3389/fpsyt.2023.1267583] [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: 07/26/2023] [Accepted: 11/29/2023] [Indexed: 01/03/2024] Open
Abstract
Background Down Syndrome (DS; OMIM #190685), known as trisomy 21, is one of the most common genetic disorders in the human population and the commonest known cause of intellectual disability. The study was conducted to investigate the quality of life (QoL) of children with DS syndrome and its impact on family functioning. Purpose of study To assess the quality of life of children with trisomy 21 and the impact of the disorder on the family. Methods We used a cross-sectional questionnaire study. The respondents were 52 parents of children with trisomy 21. The following structured questionnaires were used: the PedsQL™ 4.0 Generic Core Scales, the PedsQL™ Family Impact Module and Study-Specific Questionnaire (SSQ). Results The combined scores, with a mean value of approximately 55 out of a possible 100 points, indicated a significant impact of the child's genetic defect on family functioning. In the overall QOL, the highest rated domain was physical functioning (x̅ =60.14; SD = 23.82) and the lowest was school functioning (x̅ =51.36; SD = 18.72). Better school functioning (p = 0.022) was reported for girls. The presence of reduced muscle tone also had a negative impact on the child's functioning in the physical (p = 0.036), emotional (p = 0.011), psychosocial (p = 0.027) and overall QOL domains (p = 0.023). Conclusion Overall, our results showed that the quality of life of children with trisomy 21 is impaired. There was a positive association between the child's QOL and the QOL of their parents, as well as the general functioning of the child's whole family. For this reason, an improvement in the QOL of parents and the family functioning is closely related to an increased QOL of the child. The continuous deepening of knowledge of QOL in individual trisomy 21 management allows for better preparation and ongoing care for the patients concerned.
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Affiliation(s)
- Anna Rozensztrauch
- Clinical Department of Pediatrics, Endocrinology, Diabetology and Metabolic Diseases, Wroclaw Medical University, Wroclaw, Poland
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5
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Vacca RA, Augello A, Gallo L, Caggianese G, Malizia V, La Grutta S, Murero M, Valenti D, Tullo A, Balech B, Marzano F, Ghezzo A, Tancredi G, Turchetta A, Riccio MP, Bravaccio C, Scala I. Serious Games in the new era of digital-health interventions: A narrative review of their therapeutic applications to manage neurobehavior in neurodevelopmental disorders. Neurosci Biobehav Rev 2023; 149:105156. [PMID: 37019246 DOI: 10.1016/j.neubiorev.2023.105156] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/10/2023] [Accepted: 04/02/2023] [Indexed: 04/05/2023]
Abstract
Children and adolescents with neurodevelopmental disorders generally show adaptive, cognitive and motor skills impairments associated with behavioral problems, i.e., alterations in attention, anxiety and stress regulation, emotional and social relationships, which strongly limit their quality of life. This narrative review aims at providing a critical overview of the current knowledge in the field of serious games (SGs), known as digital instructional interactive videogames, applied to neurodevelopmental disorders. Indeed, a growing number of studies is drawing attention to SGs as innovative and promising interventions in managing neurobehavioral and cognitive disturbs in children with neurodevelopmental disorders. Accordingly, we provide a literature overview of the current evidence regarding the actions and the effects of SGs. In addition, we describe neurobehavioral alterations occurring in some specific neurodevelopmental disorders for which a possible therapeutic use of SGs has been suggested. Finally, we discuss findings obtained in clinical trials using SGs as digital therapeutics in neurodevelopment disorders and suggest new directions and hypotheses for future studies to bridge the gaps between clinical research and clinical practice.
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6
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Adorno ET, Dos Santos DCDJ, DeJesus BM, Passos AA, Teixeira-Machado L. Dance, functioning and quality of life in children with Down syndrome and autism spectrum disorder dance, functioning and quality of life in Down syndrome and autism spectrum disorder. Clin Child Psychol Psychiatry 2022; 27:967-977. [PMID: 34965160 DOI: 10.1177/13591045211061795] [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] [Indexed: 11/15/2022]
Abstract
This study investigated dance practice in psychosocial and functional aspects, and quality of life in children with Down syndrome and autism spectrum disorder. Children with DS and ASD, between 3 and 12 years old, attended a dance program during 16 sessions/lessons, lasting 60 min, twice a week, in suitable place. Functional Independence Measure (FIM), Childhood Autism Rating Scale SF-36 quality of life survey, and Knowledge, Attitude and Practice Inquiry (KAP Inquiry) were applied before and after dance classes. Eleven participants concluded the study. Functional independence changes were observed in relation to self-care, sphincter control, locomotion, and communication domains. Children' "quality of life" reported by parents showed changes in functional capacity, vitality, mental health, physical and social aspects, and general state of health domains. These findings suggest that regular dance practice can underlie psychosocial adjustments in children with DS and ASD.
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Affiliation(s)
| | | | - Beatriz M DeJesus
- Graduate Program in Physiological Sciences, 74391Federal University of Sergipe, São Cristóvão, Brazil
| | - Adrielle A Passos
- Graduate Program in Applied Health Sciences, 74391Federal University of Sergipe, Lagarto, Brazil
| | - Lavínia Teixeira-Machado
- Graduate Program in Applied Health Sciences, 74391Federal University of Sergipe, Lagarto, Brazil.,Department of Education in Health, 74391Federal University of Sergipe, Lagarto, Brazil
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7
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Kirchhofer SM, Orm S, Haukeland YB, Fredriksen T, Wakefield CE, Fjermestad KW. A systematic review of social support for siblings of children with neurodevelopmental disorders. RESEARCH IN DEVELOPMENTAL DISABILITIES 2022; 126:104234. [PMID: 35468570 DOI: 10.1016/j.ridd.2022.104234] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/25/2022] [Accepted: 04/09/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Social support is a protective factor for siblings of children with neurodevelopmental disorders. AIMS We reviewed studies on social support received by siblings of children with neurodevelopmental disorders. METHODS AND PROCEDURES We conducted a pre-registered systematic review (CRD42020207686), searching PsycINFO, MEDLINE, Web of Science, and Scopus. OUTCOMES AND RESULTS Fifteen articles were eligible for the review, 13 of which used cross-sectional designs. Two studies investigated sibling social support after an intervention. Multiple variables were negatively related to social support (e.g., sibling depression, loneliness, stress). Variables that were positively related to social support included prosocial behavior, competence (academic, social, and activity-related), problem-focused coping, and family quality of life. Potential moderators of the relationship between social support and psychosocial adjustment included the type of disorder of the affected sibling and the type of social support provider. We conclude with an overview of the reliability and validity of the seven social support measurements used across the studies. CONCLUSIONS AND IMPLICATIONS Lower levels of social support are associated with more negative psychosocial adjustment among siblings of children with neurodevelopmental disorders. We encourage future researchers to further investigate ways to increase social support for siblings to improve outcomes.
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Affiliation(s)
- Solveig M Kirchhofer
- Department of Psychology, University of Oslo, Norway; Nic Waals Institutt, Child and Adolescent Mental Health Services, Lovisenberg Hospital Trust, Oslo, Norway.
| | - Stian Orm
- Department of Psychology, University of Oslo, Norway; Innlandet Hospital Trust, Lillehammer, Norway
| | | | - Trude Fredriksen
- Department of Psychology, University of Oslo, Norway; Innlandet Hospital Trust, Lillehammer, Norway
| | - Claire E Wakefield
- School of Women's and Children's Health, UNSW Medicine and Health, UNSW Sydney, Kensington, NSW, Australia; Behavioural Sciences Unit, Kids Cancer Centre, Sydney Children's Hospital, Randwick, NSW, Australia
| | - Krister W Fjermestad
- Department of Psychology, University of Oslo, Norway; Frambu Resource Centre for Rare Disorders, Nordre Follo, Norway
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8
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Fidler DJ, Prince MA, Van Deusen K, Esbensen AJ, Thurman AJ, Abbeduto L, Patel L, Mervis C, Schworer EK, Lee NR, Edgin JO, Hepburn S, Davis S, Daunhauer LA. Latent profiles of autism symptoms in children and adolescents with Down syndrome. JOURNAL OF INTELLECTUAL DISABILITY RESEARCH : JIDR 2022; 66:265-281. [PMID: 34984734 PMCID: PMC9009451 DOI: 10.1111/jir.12910] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 11/12/2021] [Accepted: 11/14/2021] [Indexed: 05/29/2023]
Abstract
BACKGROUND Down syndrome (DS) is associated with elevated rates of autism spectrum disorder (ASD) and autism symptomatology. To better characterise heterogeneity in ASD symptomatology in DS, profiles of caregiver-reported ASD symptoms were modelled for children and adolescents with DS. METHODS Participants (n = 125) were recruited through several multi-site research studies on cognition and language in DS. Using the Social Responsiveness Scale-2 (SRS-2; Constantino and Gruber 2012), two latent profile analyses (LPA) were performed, one on the broad composite scores of social communication and interaction and restricted interests and repetitive behaviour, and a second on the four social dimensions of social communication, social motivation, social awareness, and social cognition. RESULTS A three-profile model was the best fit for both analyses, with each analysis yielding a low ASD symptom profile, an elevated or mixed ASD symptom profile and a high ASD symptom profile. Associations were observed between profile probability scores and IQ, the number of co-occurring biomedical conditions reported, sex, and SRS-2 form. CONCLUSIONS Characterising heterogeneity in ASD symptom profiles can inform more personalised supports in this population, and implications for potential therapeutic approaches for individuals with DS are discussed.
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Affiliation(s)
- D J Fidler
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
| | - M A Prince
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
- Department of Psychology, Colorado State University, Fort Collins, CO, USA
| | - K Van Deusen
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
| | - A J Esbensen
- Department of Pediatrics, Cincinnati Children's Hospital Medical Campus, Cincinnati, OH, USA
| | - A J Thurman
- Department of Psychiatry, MIND Institute, University of California - Davis Health, Sacramento, CA, USA
| | - L Abbeduto
- Department of Psychiatry, MIND Institute, University of California - Davis Health, Sacramento, CA, USA
| | - L Patel
- Department of Psychiatry, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | - C Mervis
- Department of Psychological and Brain Sciences, University of Louisville, Louisville, KY, USA
| | - E K Schworer
- Department of Pediatrics, Cincinnati Children's Hospital Medical Campus, Cincinnati, OH, USA
| | - N R Lee
- Department of Psychology, Drexel University, Philadelphia, PA, USA
| | - J O Edgin
- Sonoran University Center for Excellence in Developmental Disabilities, University of Arizona, Tucson, AZ, USA
| | - S Hepburn
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
| | - S Davis
- Department of Psychology, Colorado State University, Fort Collins, CO, USA
| | - L A Daunhauer
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
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9
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Determination of molecular signatures and pathways common to brain tissues of autism spectrum disorder: Insights from comprehensive bioinformatics approach. INFORMATICS IN MEDICINE UNLOCKED 2022. [DOI: 10.1016/j.imu.2022.100871] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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10
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Sideropoulos V, Kye H, Dukes D, Samson AC, Palikara O, Van Herwegen J. Anxiety and Worries of Individuals with Down Syndrome During the COVID-19 Pandemic: A Comparative Study in the UK. J Autism Dev Disord 2022; 53:2021-2036. [PMID: 35106684 PMCID: PMC8806133 DOI: 10.1007/s10803-022-05450-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2022] [Indexed: 11/29/2022]
Abstract
The present study explored the effects of the pandemic on individuals with Down Syndrome (DS; n = 67) compared to other groups with Special Education Needs and Disabilities (SEND; n = 48) and their Typically Developing Siblings (TDS; n = 56). In total, 115 caregivers reported on their own anxiety and worries and of their children. Anxiety levels for individuals with DS appeared to be lower compared to other SEND populations and to TDS. In terms of worries, individuals with DS worried more about social-related worries but worried less about family-related aspects compared to the other groups. In sum, individuals with DS might show less anxiety but still worried more about specific aspects related to the impact of COVID-19 pandemic on their lives.
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Affiliation(s)
- V Sideropoulos
- Department of Psychology and Human Development, UCL, Institute of Education, University College London, London, UK.
| | - H Kye
- Department of Psychology and Human Development, UCL, Institute of Education, University College London, London, UK
| | - D Dukes
- Institute of Special Education, University of Fribourg, Fribourg, Switzerland.,Swiss Center for Affective Sciences, University of Geneva, Geneva, Switzerland
| | - A C Samson
- Institute of Special Education, University of Fribourg, Fribourg, Switzerland.,Faculty of Psychology, Unidistance Suisse, Brig, Switzerland
| | - O Palikara
- Department for Education Studies, University of Warwick, Coventry, UK
| | - J Van Herwegen
- Department of Psychology and Human Development, UCL, Institute of Education, University College London, London, UK
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11
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Islam NN, Sumit AF, Chowdhury MM, Ullah MA, Araf Y, Sarkar B, Gozal D. Age and gender-related differences in quality of life of Bangladeshi patients with Down Syndrome: A cross-sectional study. Heliyon 2022; 8:e08777. [PMID: 35097229 PMCID: PMC8783120 DOI: 10.1016/j.heliyon.2022.e08777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/28/2021] [Accepted: 01/12/2022] [Indexed: 11/30/2022] Open
Abstract
Currently available screening instruments for evaluation of individuals with intellectual disabilities do not capture all the complications associated with Down Syndrome (DS). Here, we examined age and gender-specific variability revolving around major challenges related to ophthalmologic and auditory health, social integration, daily life, and behavioral problems in 468 (age: 2–84 years) individuals with DS living in all eight divisions of Bangladesh. More than half of the children presented with significant difficulty in walking or other targeted movements compared with 37.9% of adolescents (p = 0.03). Nearly 70% of children exhibited communication difficulties, particularly revolving around the understanding of speech, comprehending or learning tasks or new materials, and in expressing thoughts in words or behaviors (p = 0.003–0.006). Uncontrolled urination was frequent and predominantly found among children (p = 0.04). No significant differences were present in females vs. males except for concern about physical appearance (females: 58.5% vs. males: 47.5%; p = 0.02). The severity of DS was associated with intellectual performance, communication difficulties, and self-sufficiency (i.e., uncontrolled micturition or bowel movements) but not with psychotic, ophthalmologic, auditory, or motor skills-related problems. Increased awareness of DS phenotypic profiles among professionals and caregivers can foster earlier detection and counselling and help formulate appropriate interventions to reduce long-term sequelae and enhance cognitive and behavioral developmental outcomes.
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Affiliation(s)
- Nafisa Nawal Islam
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Ahmed Faisal Sumit
- Department of Genetic Engineering and Biotechnology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Mottakin Chowdhury
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Md Asad Ullah
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Yusha Araf
- Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet, Bangladesh
| | - Bishajit Sarkar
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - David Gozal
- Department of Child Health, MU Women's and Children's Hospital, University of Missouri School of Medicine, Columbia, MO, United States
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12
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Bradbury KR, Anderberg EI, Huang-Storms L, Vasile I, Greene RK, Duvall SW. Co-occurring Down Syndrome and Autism Spectrum Disorder: Cognitive, Adaptive, and Behavioral Characteristics. J Autism Dev Disord 2021; 52:1235-1246. [PMID: 33905067 DOI: 10.1007/s10803-021-05016-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2021] [Indexed: 11/29/2022]
Abstract
The current study explores functioning in individuals with co-occurring Autism Spectrum Disorder and Down Syndrome (ASD+DS; n = 23), individuals with ASD and cognitive impairment (ASD+ID; n = 99) and individuals with idiopathic ID (n = 38). ANCOVA results revealed that individuals with ASD+DS showed strengths in behavioral functioning compared to individuals with ID and more similar behavioral functioning to those with ASD+ID (η2 = 0.12), with the exception of disruptive behaviors. Cognitive functioning (ɸc = 0.41) and ASD symptomatology (η2 = 0.11) were more comparable for children with ASD+DS and ASD + ID than for individuals with ID. Individuals with ASD+DS had the lowest overall adaptive skills (η2 = 0.11). Findings highlight similarities between ASD+DS and ASD+ID groups, emphasizing the importance of ASD identification within the DS population to provide access to specific interventions.
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Affiliation(s)
- Kathryn R Bradbury
- Division of Pediatric Psychology, Department of Pediatrics, Institute on Development and Disability, Oregon Health & Science University and Doernbecher Children's Hospital, Portland, OR, USA. .,Children's Neuropsychological Services, Andover, MA, USA.
| | - Emily I Anderberg
- Division of Pediatric Psychology, Department of Pediatrics, Institute on Development and Disability, Oregon Health & Science University and Doernbecher Children's Hospital, Portland, OR, USA.,Lurie Center for Autism at Massachusetts General Hospital, Boston, MA, USA
| | - Lark Huang-Storms
- Oregon Center for Children and Youth with Special Health Needs (OCCYSHN), Oregon Health & Science University, Portland, OR, USA.,Center for Integrative Brain Research and Autism Center, Seattle Children's Hospital, Seattle, WA, USA
| | - Iulia Vasile
- Division of Pediatric Psychology, Department of Pediatrics, Institute on Development and Disability, Oregon Health & Science University and Doernbecher Children's Hospital, Portland, OR, USA
| | - Rachel K Greene
- Division of Pediatric Psychology, Department of Pediatrics, Institute on Development and Disability, Oregon Health & Science University and Doernbecher Children's Hospital, Portland, OR, USA
| | - Susanne W Duvall
- Division of Pediatric Psychology, Department of Pediatrics, Institute on Development and Disability, Oregon Health & Science University and Doernbecher Children's Hospital, Portland, OR, USA
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13
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Lee A, Knafl K, Van Riper M. Family Variables and Quality of Life in Children with Down Syndrome: A Scoping Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18020419. [PMID: 33430335 PMCID: PMC7825751 DOI: 10.3390/ijerph18020419] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 12/20/2022]
Abstract
The purpose of this scoping review was to identify the family and child quality of life variables that have been studied in relation to one another in children with Down syndrome, the frequency with which different relationships have been studied, and the extent to which family variables were the focus of the research aims. A literature search was conducted to find studies published between January 2007 and June 2018. The initial search yielded 2314 studies; of these, 43 were selected for a final review. Researchers most often addressed family resources and family problem-solving and coping concerning child personal development and physical well-being. Little attention to child emotional well-being was observed, with none considering family appraisal of child emotional well-being. The relationship between family variables and child QoL rarely was the primary focus of the study. Methodologically, most reviewed studies used cross-sectional designs, were conducted in North America and based on maternal report. From future research considering the issues found in this review, healthcare providers can obtain an in-depth understanding of relationships between children and family variables.
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Affiliation(s)
- Anna Lee
- School of Nursing, Korea University, Seoul 02841, Korea
- Correspondence: ; Tel.: +82-2-3290-4900
| | - Kathleen Knafl
- School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7460, USA; (K.K.); (M.V.R.)
| | - Marcia Van Riper
- School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7460, USA; (K.K.); (M.V.R.)
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Lee A, Knafl G, Knafl K, Van Riper M. Quality of life in individuals with Down syndrome aged 4 to 21 years. Child Care Health Dev 2021; 47:85-93. [PMID: 32997835 DOI: 10.1111/cch.12815] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 08/11/2020] [Accepted: 09/19/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND To date, investigations of quality of life (QoL) in children with Down syndrome (DS) are rather limited. The purpose of this study was twofold: to examine QoL in children with DS and to explore possible differences in the QoL by age and gender. METHODS A cross-sectional study of 211 parents of children with DS was conducted using an online survey that included a consent form, a demographic questionnaire and the English version of KidsLife, which is a measure of children's QoL. RESULTS Our results demonstrated moderate or favourable levels of QoL except for the emotional well-being domain among children with DS. The children's QoL showed no variance by gender. However, emotional and material well-being, interpersonal relations and social inclusion varied by age. CONCLUSIONS The current findings provide important evidence that will help healthcare, educational and social services professionals to understand the multiple aspects of QoL in children with DS and support parents in their efforts to ensure the child's QoL. The results also point to the need to develop interventions aimed at improving QoL in those areas where children with DS are at increased risk for poorer QoL.
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Affiliation(s)
- Anna Lee
- Department of Nursing, College of Health and Welfare, Gangneung-Wonju National University, Wonju, South Korea
| | - George Knafl
- School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Kathleen Knafl
- School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Marcia Van Riper
- School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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15
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Gestational age is related to symptoms of attention-deficit/hyperactivity disorder in late-preterm to full-term children and adolescents with down syndrome. Sci Rep 2020; 10:20345. [PMID: 33230240 PMCID: PMC7683733 DOI: 10.1038/s41598-020-77392-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 11/09/2020] [Indexed: 11/24/2022] Open
Abstract
Attention-deficit/hyperactivity disorder is frequently reported in individuals with Down syndrome, with considerable variation in the expression and severity of the symptoms. Despite growing evidence that gestational age predicts later symptoms of attention-deficit/hyperactivity disorder in the euploid population, this has not been studied in down syndrome. The current study is designed to investigate the influence of gestational age in later symptoms of attention-deficit/hyperactivity disorder in 105 individuals (49 males and 56 females; aged 6–18 years) with Down syndrome who were born at or after 35 weeks gestation. Maternal age at birth, maternal level of education, household income, as well as sex, chronological age, and cognitive level of the participant with Down syndrome were considered in our analysis. Results from this study show that gestational age is related to inattentive and hyperactive/impulsive symptoms in children and adolescents with Down syndrome. Therefore, gestational age should be addressed when considering symptoms of attention-deficit/hyperactivity disorder, as it may have implications for early interventions. More attention is needed toward the advancement of care and follow-up for infants with down syndrome who are born even late preterm or early term.
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Lee A, Knafl G, Knafl K, Van Riper M. Parent-Reported Contribution of Family Variables to the Quality of Life in Children with Down Syndrome: Report from an International Study. J Pediatr Nurs 2020; 55:192-200. [PMID: 32957023 DOI: 10.1016/j.pedn.2020.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 07/20/2020] [Accepted: 07/20/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE The intent of this study was to determine parents' views of the contribution of family variables to the quality of life (QoL) of children with Down Syndrome (DS). Based on prior research, we hypothesized that parents would report that family variables reflecting positive aspects of family functioning contributed to better QoL; and family variables reflecting the negative aspects of family functioning contributed to poorer QoL. DESIGN AND METHODS A cross-sectional study was carried out. Invitation letters were sent to DS support groups. Upon agreement, the parents of the children were sent a link to an online survey that included a consent form, demographic questionnaire, and child and family measures. RESULTS Results demonstrated the contribution of family demands to children's interpersonal relations. Family appraisals concerning the child and the family's ability predicted the children's physical and material well-being, personal development, self-determination, social inclusion, interpersonal relations, and rights. Family problem-solving served as a prominent predictor for children's physical and emotional well-being, personal development, interpersonal relations, and rights. Also, family resources predicted various aspects of children's QoL including physical, emotional, and material well-being, self-determination, social inclusion, interpersonal relations, and rights. CONCLUSION Results confirmed the significant relationship between family and children's QoL variables. Family appraisal and family problem-solving were especially identified as significant predictors of children's QoL that can be targeted for family interventions, since the family variables are modifiable aspects of family life. PRACTICE IMPLICATIONS Nurses can use current findings to develop interventions to enhance QoL of children with DS and families.
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Affiliation(s)
- Anna Lee
- Department of Nursing, College of Health and Welfare, South Korea.
| | - George Knafl
- University of North Carolina at Chapel Hill School of Nursing, NC, United States.
| | - Kathleen Knafl
- University of North Carolina at Chapel Hill School of Nursing, NC, United States.
| | - Marcia Van Riper
- University of North Carolina at Chapel Hill School of Nursing, NC, United States.
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Santoro JD, Pagarkar D, Chu DT, Rosso M, Paulsen KC, Levitt P, Rafii MS. Neurologic complications of Down syndrome: a systematic review. J Neurol 2020; 268:4495-4509. [PMID: 32920658 DOI: 10.1007/s00415-020-10179-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 08/17/2020] [Accepted: 08/19/2020] [Indexed: 12/18/2022]
Abstract
Down syndrome (DS) is one of the most well-recognized genetic disorders. Persons with DS are known to have a variety of co-morbid medical problems, affecting nearly all organ systems. Improved healthcare interventions and research have allowed for increased life span of persons with DS, although disorders of the neurologic system remain underexplored. The purpose of this systematic review is to provide clinically pertinent information on the neurological phenotypes of frequently occurring or clinically relevant conditions. A retrospective review of MEDLINE, Scopus, and Pubmed were used to identify sources among seventeen, clinically relevant, search categories. MeSH terms all contained the phrase "Down Syndrome" in conjunction with the topic of interest. 'Frequently-occurring' was defined as prevalent in more than 10% of persons with DS across their lifespan, whereas 'clinically-relevant' was defined as a disease condition where early diagnosis or intervention can augment the disease course. In total, 4896 sources were identified with 159 sources meeting criteria for inclusion. Seventeen clinical conditions were grouped under the following subjects: hypotonia, intellectual and learning disability, cervical instability, autism spectrum disorder, epilepsy, cerebrovascular disease, Alzheimer's disease and neuropsychiatric disease. The results of this review provide a blueprint for the clinical neurologist taking care of persons with DS across the age spectrum and indicate that there are many underrecognized and misdiagnosed co-occurring conditions in DS, highlighting the need for further research.
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Affiliation(s)
- Jonathan D Santoro
- Keck School of Medicine at the University of Southern California, Los Angeles, CA, USA. .,Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
| | - Dania Pagarkar
- Keck School of Medicine at the University of Southern California, Los Angeles, CA, USA
| | - Duong T Chu
- Faculty of Medicine, Queen's University, Kingston, ON, Canada
| | - Mattia Rosso
- Department of Neurology, Medical University of South Carolina, Charleston, SC, USA
| | - Kelli C Paulsen
- Division of Neurology, Department of Pediatrics, Children's Hospital Los Angeles, Los Angeles, CA, USA.,Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Pat Levitt
- Department of Pediatrics and Program in Developmental Neuroscience and Developmental Neurogenetics, The Saban Research Institute, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Michael S Rafii
- Keck School of Medicine at the University of Southern California, Los Angeles, CA, USA.,Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.,Alzheimer's Therapeutic Research Institute (ATRI), Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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18
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Glasson EJ, Buckley N, Chen W, Leonard H, Epstein A, Skoss R, Jacoby P, Blackmore AM, Bourke J, Downs J. Systematic Review and Meta-analysis: Mental Health in Children With Neurogenetic Disorders Associated With Intellectual Disability. J Am Acad Child Adolesc Psychiatry 2020; 59:1036-1048. [PMID: 31945412 DOI: 10.1016/j.jaac.2020.01.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 10/11/2019] [Accepted: 01/08/2020] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The behavioral phenotype of neurogenetic disorders associated with intellectual disability often includes psychiatric comorbidity. The objectives of this systematic review and meta-analysis were to systematically review the prevalence of psychiatric disorders and symptoms in children and adolescents with these disorders and compare phenotypic signatures between syndromes. METHOD MEDLINE and PsycINFO databases were searched for articles from study inception to December 2018. Eligible articles were peer reviewed, were published in English, and reported prevalence data for psychiatric disorders and symptoms in children and adolescents aged 4 to 21 years using a formal psychiatric assessment or a standardized assessment of mental health symptoms. Pooled prevalence was determined using a random-effects meta-analysis in studies with sufficient data. Prevalence estimates were compared with general population data using a test of binomial proportions. RESULTS Of 2,301 studies identified for review, 39 articles were included in the final pool, which provided data on 4,039 children and adolescents. Ten syndromes were represented, and five were predominant: Down syndrome, 22q11.2 deletion syndrome, fragile X syndrome, Williams syndrome, and Prader-Willi syndrome. The Child Behavior Checklist was the most commonly used assessment tool for psychiatric symptoms. The pooled prevalence with total scores above the clinical threshold was lowest for Down syndrome (32% [95% confidence interval, 19%-44%]) and highest for Prader-Willi syndrome (74% [95% CI, 65%-82%]) with each syndrome associated with significantly higher prevalence than in the general population. Parallel trends were observed for the internalizing and externalizing domains and social subscale scores. CONCLUSION Differential vulnerability for psychiatric phenotype expression across the disorders was observed. Syndromes with higher levels of social ability or competence appear to offer relative protection against developing psychopathology. This preliminary finding merits further exploration.
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Affiliation(s)
- Emma J Glasson
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | - Nicholas Buckley
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | - Wai Chen
- Complex Attention and Hyperactivity Disorders Service, Perth, Australia; and the Centre and Discipline of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, The University of Western Australia, Perth, Australia
| | - Helen Leonard
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | - Amy Epstein
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | - Rachel Skoss
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | - Peter Jacoby
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | | | - Jenny Bourke
- Telethon Kids Institute, The University of Western Australia, Perth, Australia
| | - Jenny Downs
- Telethon Kids Institute, The University of Western Australia, Perth, Australia; School of Physiotherapy and Exercise Science, Curtin University, Perth, Australia.
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Neuroinflammatory Markers in the Serum of Prepubertal Children with Down Syndrome. J Immunol Res 2020; 2020:6937154. [PMID: 32280719 PMCID: PMC7125499 DOI: 10.1155/2020/6937154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/01/2020] [Accepted: 02/20/2020] [Indexed: 02/07/2023] Open
Abstract
Down Syndrome (DS) is the most common chromosomal disorder. Although DS individuals are mostly perceived as characterized by some distinct physical features, cognitive disabilities, and cardiac defects, they also show important dysregulations of immune functions. While critical information is available for adults with DS, little literature is available on the neuroinflammation in prepubertal DS children. We aimed to evaluate in prepubertal DS children the serum levels of nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF), oxidative stress as free oxygen radicals defense (FORD), free oxygen radicals test (FORT), and cytokines playing key roles in neuroinflammation and oxidative processes as TNF-α, TGF-β, MCP-1, IL-1α, IL-2, IL-6, IL-10, and IL-12. No differences were found in NGF between DS children and controls. However, BDNF was higher in DS subjects compared to controls. We also did not reveal changes in FORD and FORT. Quite interestingly, the serum of DS children disclosed a marked decrease in all analyzed cytokines with evident differences in serum cytokine presence between male and female DS children. In conclusion, the present study evidences in DS prepubertal children a disruption in the neurotrophins and immune system pathways.
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20
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Startin CM, D’Souza H, Ball G, Hamburg S, Hithersay R, Hughes KMO, Massand E, Karmiloff-Smith A, Thomas MSC, Strydom A. Health comorbidities and cognitive abilities across the lifespan in Down syndrome. J Neurodev Disord 2020; 12:4. [PMID: 31973697 PMCID: PMC6979347 DOI: 10.1186/s11689-019-9306-9] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 12/31/2019] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Down syndrome (DS) is associated with variable intellectual disability and multiple health and psychiatric comorbidities. The impact of such comorbidities on cognitive outcomes is unknown. We aimed to describe patterns of physical health and psychiatric comorbidity prevalence, and receptive language ability, in DS across the lifespan, and determine relationships with cognitive outcomes. METHODS Detailed medical histories were collected and cognitive abilities measured using standardised tests for 602 individuals with DS from England and Wales (age range 3 months to 73 years). Differences in prevalence rates between age groups and between males and females were determined using chi-squared or Fisher's exact tests. In adults, rates for psychiatric comorbidities were compared to expected population rates using standardised morbidity ratios (SMRs). Adapted ANCOVA functions were constructed to explore age and sex associations with receptive language ability across the lifespan, and regression analyses were performed to determine whether the presence of health comorbidities or physical phenotypes predicted cognitive abilities. RESULTS Multiple comorbidities showed prevalence differences across the lifespan, though there were few sex differences. In adults, SMRs were increased in males and decreased in females with DS for schizophrenia, bipolar disorder, and anxiety. Further, SMRs were increased in both males and females with DS for dementia, autism, ADHD, and depression, with differences more pronounced in females for dementia and autism, and in males for depression. Across the lifespan, receptive language abilities increasingly deviated from age-typical levels, and males scored poorer than females. Only autism and epilepsy were associated with poorer cognitive ability in those aged 16-35 years, with no relationships for physical health comorbidities, including congenital heart defects. CONCLUSIONS Our results indicate the prevalence of multiple comorbidities varies across the lifespan in DS, and in adults, rates for psychiatric comorbidities show different patterns for males and females relative to expected population rates. Further, most health comorbidities are not associated with poorer cognitive outcomes in DS, apart from autism and epilepsy. It is essential for clinicians to consider such differences to provide appropriate care and treatment for those with DS and to provide prognostic information relating to cognitive outcomes in those with comorbidities.
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Affiliation(s)
- Carla M. Startin
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Division of Psychiatry, University College London, London, UK
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
| | - Hana D’Souza
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London, UK
- Department of Psychology & Newnham College, University of Cambridge, Cambridge, UK
| | - George Ball
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London, UK
| | - Sarah Hamburg
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Division of Psychiatry, University College London, London, UK
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
| | - Rosalyn Hithersay
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Division of Psychiatry, University College London, London, UK
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
| | - Kate M. O. Hughes
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London, UK
- Department of Psychology, University of Arizona, Tucson, AZ USA
| | - Esha Massand
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London, UK
| | - Annette Karmiloff-Smith
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London, UK
| | - Michael S. C. Thomas
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London, UK
| | - Andre Strydom
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Division of Psychiatry, University College London, London, UK
- The LonDownS Consortium (London Down Syndrome Consortium), London, UK
- South London and the Maudsley NHS Foundation Trust, London, UK
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Hamlett ED, LaRosa A, Mufson EJ, Fortea J, Ledreux A, Granholm AC. Exosome release and cargo in Down syndrome. Dev Neurobiol 2019; 79:639-655. [PMID: 31347291 DOI: 10.1002/dneu.22712] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/20/2019] [Accepted: 07/22/2019] [Indexed: 12/11/2022]
Abstract
Down syndrome (DS) is a multisystem disorder affecting 1 in 800 births worldwide. Advancing technology, medical treatment, and social intervention have dramatically increased life expectancy, yet there are many etiologies of this disorder that are in need of further research. The advent of the ability to capture extracellular vesicles (EVs) in blood from specific cell types allows for the investigation of novel intracellular processes. Exosomes are one type of EVs that have demonstrated great potential in uncovering new biomarkers of neurodegeneration and disease, and also that appear to be intricately involved in the transsynaptic spread of pathogenic factors underlying Alzheimer's disease and other neurological diseases. Exosomes are nanosized vesicles, generated in endosomal multivesicular bodies (MVBs) and secreted by most cells in the body. Since exosomes are important mediators of intercellular communication and genetic exchange, they have emerged as a major research focus and have revealed novel biological sequelae involved in conditions afflicting the DS population. This review summarizes current knowledge on exosome biology in individuals with DS, both early in life and in aging individuals. Collectively these studies have demonstrated that complex multicellular processes underlying DS etiologies may include abnormal formation and secretion of extracellular vesicles such as exosomes.
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Affiliation(s)
- Eric D Hamlett
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Angela LaRosa
- Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina
| | - Elliott J Mufson
- Department of Neurobiology and Neurology, Barrow Neurological Institute, Phoenix, Arizona
| | - Juan Fortea
- Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, CIBERNED, Universitat Autònoma de Barcelona, Barcelona, Spain.,Alzheimer's Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Institut d'Investigació Biomèdica August Pi i Sunyer, University of Barcelona, Barcelona, Spain
| | - Aurélie Ledreux
- Department of Biological Sciences and the Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado
| | - Ann-Charlotte Granholm
- Department of Biological Sciences and the Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado
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22
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Characteristics Associated with Autism Spectrum Disorder Risk in Individuals with Down Syndrome. J Autism Dev Disord 2019; 49:3543-3556. [DOI: 10.1007/s10803-019-04074-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Abstract
Down syndrome (DS; Trisomy 21) is the most common chromosomal disorder in humans. It has numerous associated neurologic phenotypes including intellectual disability, sleep apnea, seizures, behavioral problems, and dementia. With improved access to medical care, people with DS are living longer than ever before. As more individuals with DS reach old age, the necessity for further life span research is essential and cannot be overstated. There is currently a scarcity of information on common medical conditions encountered as individuals with DS progress into adulthood and old age. Conflicting information and uncertainty about the relative risk of dementia for adults with DS is a source of distress for the DS community that creates a major obstacle to proper evaluation and treatment. In this chapter, we discuss the salient neurologic phenotypes of DS, including Alzheimer's disease (AD), and current understanding of their biologic bases and management.
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Affiliation(s)
- Michael S Rafii
- Department of Neurology, Keck School of Medicine of the University of Southern California, San Diego, CA, United States
| | | | - Mariko Sawa
- Department of Neurosciences, University of California San Diego, La Jolla, CA, United States
| | - William C Mobley
- Department of Neurosciences, University of California San Diego, La Jolla, CA, United States.
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Nag HE, Nordgren A, Anderlid BM, Nærland T. Reversed gender ratio of autism spectrum disorder in Smith-Magenis syndrome. Mol Autism 2018; 9:1. [PMID: 29321841 PMCID: PMC5759230 DOI: 10.1186/s13229-017-0184-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 12/19/2017] [Indexed: 12/12/2022] Open
Abstract
Background A substantial amount of research shows a higher rate of autistic type of problems in males compared to females. The 4:1 male to female ratio is one of the most consistent findings in autism spectrum disorder (ASD). Lately, the interest in studying ASD in genetic disorders has increased, and research has shown a higher prevalence of ASD in some genetic disorders than in the general population. Smith-Magenis syndrome (SMS) is a rare and complex genetic syndrome caused by an interstitial deletion of chromosome 17p11.2 or a mutation on the retinoic acid induced 1 gene. The disorder is characterised by intellectual disability, multiple congenital anomalies, obesity, neurobehavioural abnormalities and a disrupted circadian sleep-wake pattern. Methods Parents of 28 persons with SMS between 5 and 50 years old participated in this study. A total of 12 of the persons with SMS were above the age of 18 at the time of the study. A total of 11 came from Sweden and 17 were from Norway. We collected information regarding the number of autism spectrum symptoms using the Social Communication Questionnaire (SCQ) and the Social Responsiveness Scale (SRS). Adaptive behaviour was also measured using the Vineland Adaptive Behavior Scale II. The level of intellectual disability was derived from a review of the medical chart. Results We found significant gender differences in ASD symptomatology using the SCQ and SRS questionnaires. We found approximately three females per male above the SCQ cutoff. The same differences were not found in the intellectual level and adaptive behaviour or for behavioural and emotional problems. Gender had an independent contribution in a regression model predicting the total SCQ score, and neither the Vineland Adaptive Behavior Scale II nor the Developmental Behaviour Checklist had an independent contribution to the SCQ scores. Conclusion We found a clear reversed gender difference in ASD symptomatology in persons with SMS. This may be relevant in the search for female protective factors assumed to explain the male bias in ASD.
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Affiliation(s)
- Heidi Elisabeth Nag
- Frambu Resource Centre for Rare Disorders, Siggerud, Norway.,University of Stavanger, Stavanger, Norway
| | - Ann Nordgren
- Karolinska Centre for Rare Diseases, Karolinska University Hospital, Solna, Sweden
| | - Britt-Marie Anderlid
- Karolinska Centre for Rare Diseases, Karolinska University Hospital, Solna, Sweden
| | - Terje Nærland
- NevSom, Department of Rare Disorders and Disabilities, Oslo University Hospital, Oslo, Norway.,KG Jebsen Centre for Psychosis Research, NORMENT, University of Oslo, Oslo, Norway
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