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1.
Pediatr Clin North Am ; 71(2): 301-313, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38423722

RESUMO

Profound autism refers to a subset of individuals with autism spectrum disorder who have an intellectual disability with an intelligence quotient less than 50 and minimal-to-no language and require 24-hour supervision and assistance with activities of daily living. The general pediatrician will invariably work with autistic children across the spectrum and will likely encounter youth with profound autism. Awareness of profound autism as a real entity describing autistic children with concomitant intellectual disability and language impairment who require 24-hour care is the first step in developing a solid pediatric home for these youth.


Assuntos
Transtorno do Espectro Autista , Transtorno Autístico , Deficiência Intelectual , Adolescente , Humanos , Criança , Transtorno Autístico/diagnóstico , Transtorno Autístico/terapia , Transtorno Autístico/complicações , Transtorno do Espectro Autista/complicações , Transtorno do Espectro Autista/diagnóstico , Transtorno do Espectro Autista/terapia , Atividades Cotidianas
2.
Autism Res ; 16(3): 497-501, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36508163

RESUMO

Individuals diagnosed with autism spectrum disorder (ASD) present with a highly diverse set of challenges, disabilities, impairments and strengths. Recently, it has been suggested that researchers and practitioners avoid using certain words to describe the difficulties and impairments experienced by individuals with ASD to reduce stigma. The proposed limitations on terminology were developed by only a subset of the autism community, and the recommendations are already causing negative consequences that may be harmful to future scientific and clinical endeavors and, ultimately, to people with ASD. No one should have the power to censor language to exclude the observable realities of autism. Scientists and clinicians must be able to use any scientifically accurate terms necessary to describe the wide range of autistic people they study and support, without fear of censure or retribution.


Assuntos
Transtorno do Espectro Autista , Transtorno Autístico , Humanos , Transtorno Autístico/diagnóstico , Semântica , Transtorno do Espectro Autista/diagnóstico , Idioma
3.
Lancet Child Adolesc Health ; 7(12): 897-908, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37973254

RESUMO

Emerging evidence suggests that the higher prevalence of autism in individuals who are assigned male than assigned female at birth results from both biological factors and identification biases. Autistic individuals who are assigned female at birth (AFAB) and those who are gender diverse experience health disparities and clinical inequity, including late or missed diagnosis and inadequate support. In this Viewpoint, an international panel of clinicians, scientists, and community members with lived experiences of autism reviewed the challenges in identifying autism in individuals who are AFAB and proposed clinical and research directions to promote the health, development, and wellbeing of autistic AFAB individuals. The recognition challenges stem from the interplay between cognitive differences and nuanced or different presentations of autism in some AFAB individuals; expectancy, gender-related, and autism-related biases held by clinicians; and social determinants. We recommend that professional development for clinicians be supported by health-care systems, professional societies, and governing bodies to improve equitable access to assessment and earlier identification of autism in AFAB individuals. Autistic AFAB individuals should receive tailored support in education, identity development, health care, and social and professional sense of belonging.


Assuntos
Transtorno Autístico , Recém-Nascido , Humanos , Masculino , Feminino , Transtorno Autístico/diagnóstico , Transtorno Autístico/epidemiologia , Transtorno Autístico/psicologia , Identidade de Gênero , Pesquisa , Relações Interpessoais , Prevalência
4.
J Autism Dev Disord ; 52(9): 4206-4211, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34529251

RESUMO

Autistic individuals who are also people of color or from lower socioeconomic strata are historically underrepresented in research. Lack of representation in autism research has contributed to health and healthcare disparities. Reducing these disparities will require culturally competent research that is relevant to under-resourced communities as well as collecting large nationally representative samples, or samples in which traditionally disenfranchised groups are over-represented. To achieve these goals, a diverse group of culturally competent researchers must partner with and gain the trust of communities to identify and eliminate barriers to participating in research. We suggest community-academic partnerships as one promising approach that results in high-quality research built on cultural competency, respect, and shared decision making.


Assuntos
Transtorno do Espectro Autista , Transtorno Autístico , Viés , Competência Cultural , Disparidades em Assistência à Saúde , Humanos
5.
J Autism Dev Disord ; 52(10): 4646-4650, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34716842

RESUMO

Participation in research can provide direct and indirect benefit to individuals with autism spectrum disorder (ASD), their caregivers, families, and society at large. Unfortunately, individuals with high support needs, including those with intellectual disability, cognitive disability or minimal verbal ability, are often systematically excluded from research on ASD. This limits the ability to generalize discoveries to all people with ASD, and results in a disparity in who benefits from research. This piece outlines the importance and extent of the problem, which is part of a broader lack of inclusivity in ASD research. It also provides examples of studies that have directly addressed issues that arise when conducting inclusive research and makes recommendations for researchers to reduce disparities in research participation.


Assuntos
Transtorno do Espectro Autista , Deficiência Intelectual , Transtorno do Espectro Autista/psicologia , Transtorno do Espectro Autista/terapia , Cuidadores , Humanos , Deficiência Intelectual/psicologia
6.
Genes Brain Behav ; 21(5): e12803, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35285132

RESUMO

Neurodevelopmental disorders (NDDs), including autism spectrum disorder (ASD) and intellectual disability (ID), are pervasive, often lifelong disorders, lacking evidence-based interventions for core symptoms. With no established biological markers, diagnoses are defined by behavioral criteria. Thus, preclinical in vivo animal models of NDDs must be optimally utilized. For this reason, experts in the field of behavioral neuroscience convened a workshop with the goals of reviewing current behavioral studies, reports, and assessments in rodent models. Goals included: (a) identifying the maximal utility and limitations of behavior in animal models with construct validity; (b) providing recommendations for phenotyping animal models; and (c) guidelines on how in vivo models should be used and reported reliably and rigorously while acknowledging their limitations. We concluded by recommending minimal criteria for reporting in manuscripts going forward. The workshop elucidated a consensus of potential solutions to several problems, including revisiting claims made about animal model links to ASD (and related conditions). Specific conclusions included: mice (or other rodent or preclinical models) are models of the neurodevelopmental insult, not specifically any disorder (e.g., ASD); a model that perfectly recapitulates a disorder such as ASD is untenable; and greater attention needs be given to validation of behavioral testing methods, data analysis, and critical interpretation.


Assuntos
Transtorno do Espectro Autista , Deficiência Intelectual , Transtornos do Neurodesenvolvimento , Animais , Transtorno do Espectro Autista/genética , Modelos Animais de Doenças , Camundongos
7.
Autism Res ; 14(6): 1078-1087, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33759380

RESUMO

The COVID-19 pandemic has disrupted autism research and services. Early career researchers (ECRs) are particularly vulnerable to the impact of the pandemic on job security and career development. The goal of this study was to capture the challenges ECRs are facing during the pandemic and the supports that are needed for career development and research. ECRs were invited to complete an online survey that focused on four major areas; the impact of COVID-19 on their research; changes in productivity due to COVID-19; changes to training due to COVID-19; and current mental health. 150 ECRs were eligible and provided sufficient data for inclusion. All but one ECRs reported their research had been negatively impacted by the pandemic. Reductions in productivity were reported by 85% of ECRs. The biggest impacts included recruitment of participants, increased needs at home and personal mental health. ECRs reported a 3-fold increase in burnout, as well as increased anxiety. ECR supports, such as funding, flexibility, and tenure extensions, are required to ensure ASD research does not suffer from a "lost generation" of researchers. LAY SUMMARY: The COVID-19 pandemic has had negative impacts on research around the world. Loss of productivity impedes autism research discoveries. However, researchers in the earliest phases of their career, specifically postdoctoral fellows through individuals in assistant professor (or equivalent) positions, are particularly vulnerable to long-lasting effects of pandemic-related disruptions which may limit their ability to continue as autism researchers. This survey highlights the needs of this group and identifies mechanisms by which these early career researchers may be supported in this time. This is critical to ensure the next generation of ASD researchers and clinician scientists continue on the path to advancing understanding of autism in the decades to come.


Assuntos
Transtorno do Espectro Autista , Pesquisa Biomédica/organização & administração , COVID-19 , Eficiência , Saúde Mental/estatística & dados numéricos , Pandemias , Pesquisadores , Pesquisa Biomédica/tendências , Mobilidade Ocupacional , Humanos , Pesquisadores/economia , Pesquisadores/educação , Pesquisadores/psicologia
8.
Autism Res ; 14(11): 2251-2259, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34553489

RESUMO

The COVID-19 pandemic has posed unique challenges for families and caregivers, as well as for autism-focused clinicians, who are faced with providing a thorough and accurate evaluation of children's specific needs and diagnoses in the absence of in-person assessment tools. The shift to telehealth assessments has challenged clinicians to reconsider approaches and assumptions that underlie the diagnostic assessment process, and to adopt new ways of individualizing standard assessments according to family and child needs. Mandates for physical distancing have uncovered deficiencies in diagnostic practices for suspected autism and have illuminated biases that have posed obstacles preventing children and families from receiving the services that they truly need. This Commentary outlines several considerations for improving diagnostic practices as we move forward from the current pandemic and continue to strive to build an adaptable, sustainable, equitable, and family-centered system of care. LAY SUMMARY: Physical distancing and the abrupt end to in-person services for many children on the autism spectrum has forced clinicians to examine the existing challenges with autism spectrum disorder (ASD) diagnostic assessment and consider things they want to keep and things that should be changed in the years ahead. New approaches such as telehealth both alleviated and exacerbated existing disparities, and brought into stark focus the importance of equitable and timely access to family-centered care. This commentary suggests ways of improving clinical practices related to ASD assessment to continue along this path.


Assuntos
Transtorno do Espectro Autista , Transtorno Autístico , COVID-19 , Transtorno do Espectro Autista/diagnóstico , Transtorno do Espectro Autista/epidemiologia , Criança , Humanos , Pandemias , SARS-CoV-2
9.
Arch Pathol Lab Med ; 145(4): 494-501, 2021 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-32960953

RESUMO

CONTEXT.­: Autism spectrum disorder is a neurodevelopmental condition that affects over 1% of the population worldwide. Developing effective preventions and treatments for autism will depend on understanding the neuropathology of the disorder. While evidence from magnetic resonance imaging indicates altered development of the autistic brain, it lacks the resolution needed to identify the cellular and molecular underpinnings of the disorder. Postmortem studies of human brain tissue currently represent the only viable option to pursuing these critical studies. Historically, the availability of autism brain tissue has been extremely limited. OBJECTIVE.­: To overcome this limitation, Autism BrainNet, funded by the Simons Foundation, was formed as a network of brain collection sites that work in a coordinated fashion to develop a library of human postmortem brain tissues for distribution to researchers worldwide. Autism BrainNet has collection sites (or Nodes) in California, Texas, and Massachusetts; affiliated, international Nodes are located in Oxford, England and Montreal, Quebec, Canada. DATA SOURCES.­: Pubmed, Autism BrainNet. CONCLUSIONS.­: Because the death of autistic individuals is often because of an accident, drowning, suicide, or sudden unexpected death in epilepsy, they often are seen in a medical examiner's or coroner's office. Yet, autism is rarely considered when evaluating the cause of death. Advances in our understanding of chronic traumatic encephalopathy have occurred because medical examiners and neuropathologists questioned whether a pathologic change might exist in individuals who played contact sports and later developed severe behavioral problems. This article highlights the potential for equally significant breakthroughs in autism arising from the proactive efforts of medical examiners, pathologists, and coroners in partnership with Autism BrainNet.


Assuntos
Transtorno do Espectro Autista/patologia , Pesquisa Biomédica/organização & administração , Encéfalo/patologia , Médicos Legistas/organização & administração , Família , Patologistas/organização & administração , Pesquisadores/organização & administração , Transtorno do Espectro Autista/psicologia , Transtorno do Espectro Autista/terapia , Comportamento Cooperativo , Humanos , Comunicação Interdisciplinar , Desenvolvimento de Programas , Participação dos Interessados , Bancos de Tecidos/organização & administração
10.
Autism Res ; 13(7): 1195-1214, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32170919

RESUMO

Employment rates for autistic individuals are poor, even compared to those from other disability groups. Internationally, there remains limited understanding of the factors influencing employment across the stages of preparing for, gaining, and maintaining employment. This is the third in a series of studies conducted as part of an International Society for Autism Research (INSAR) policy brief intended to improve employment outcomes for autistic individuals. A multi-informant international survey with five key stakeholder groups, including autistic individuals, their families, employers, service providers, and researchers, was undertaken in Australia, Sweden, and the United States to understand the facilitators and barriers to employment for autistic adults. A total of 687 individuals participated, including autistic individuals (n = 246), family members (n = 233), employers (n = 35), clinicians/service providers (n = 123), and researchers (n = 50). Perceptions of the facilitators and barriers to employment differed significantly across both key stakeholder groups and countries, however, ensuring a good job match and focusing on strengths were identified by all groups as important for success. Key barriers to employment included stigma, a lack of understanding of autism spectrum disorder (ASD) and communication difficulties. Results suggest that a holistic approach to employment for autistic individuals is required, aimed at facilitating communication between key stakeholders, addressing attitudes and understanding of ASD in the workplace, using strength-based approaches and providing early work experience. Autism Res 2020, 13: 1195-1214. © 2020 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Autistic individuals experience significant difficulty getting and keeping a job. This article presents a survey study involving autistic individuals, their families, employers, service providers and researchers in Australia, Sweden, and the United States to understand their perspectives on the factors that support or act as barriers to employment. While perspectives varied across key stakeholders, strategies such as using a holistic approach, targeting workplace attitudes and understanding, focusing on strengths, and providing early work experience are important for success.


Assuntos
Transtorno Autístico , Adulto , Austrália , Emprego , Humanos , Internacionalidade , Suécia
11.
Autism ; 23(4): 869-901, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30073870

RESUMO

The aim of this study is to holistically synthesise the extent and range of literature relating to the employment of individuals with autism spectrum disorder. Database searches of Medline, CINAHL, PsychINFO, Scopus, ERIC, Web of Science and EMBASE were conducted. Studies describing adults with autism spectrum disorder employed in competitive, supported or sheltered employment were included. Content analysis was used to identify the strengths and abilities in the workplace of employees with autism spectrum disorder. Finally, meaningful concepts relating to employment interventions were extracted and linked to the International Classification of Functioning, Disability and Health Core Sets for autism spectrum disorder. The search identified 134 studies for inclusion with methodological quality ranging from limited to strong. Of these studies, only 36 evaluated employment interventions that were coded and linked to the International Classification of Functioning, Disability and Health, primarily focusing on modifying autism spectrum disorder characteristics for improved job performance, with little consideration of the impact of contextual factors on work participation. The International Classification of Functioning, Disability and Health Core Sets for autism spectrum disorder are a useful tool in holistically examining the employment literature for individuals with autism spectrum disorder. This review highlighted the key role that environmental factors play as barriers and facilitators in the employment of people with autism spectrum disorder and the critical need for interventions which target contextual factors if employment outcomes are to be improved.


Assuntos
Transtorno do Espectro Autista/reabilitação , Emprego , Reabilitação Vocacional , Local de Trabalho , Readaptação ao Emprego , Humanos , Classificação Internacional de Funcionalidade, Incapacidade e Saúde , Oficinas de Trabalho Protegido , Meio Social , Desempenho Profissional
12.
Autism Res ; 12(11): 1648-1662, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31276308

RESUMO

Despite efforts to improve employment outcomes for autistic individuals, internationally their employment rates remain low. There is a need to better understand the factors influencing successful employment for autistic adults in the labor market from the perspectives of multiple key stakeholders. This study represents the second in a series of papers conducted as part of an International Society for Autism Research policy brief aimed at improving employment outcomes for autistic individuals. A community consultation methodology using focus groups, forums, and interviews was applied with autistic individuals (n = 19), family members (n = 18), service providers (n = 21), employers (n = 11), researchers (n = 5), and advocacy group representatives (n = 5) in Australia, Sweden, and the United States, aiming to identify the factors perceived to determine gaining and maintaining employment for autistic individuals. Directed content analysis, guided by the International Classification of Functioning, Disability and Health (ICF), was conducted to investigate the key factors influencing employment outcomes for autistic individuals. Meaningful verbal concepts, or units of text with common themes, were also derived from the qualitative data and then linked and compared to the ICF Autism Spectrum Disorder (ASD) Core-sets. Across countries, activity and participation and environmental factor categories of the ICF were the most associated with employment outcomes. Results suggest that removal of environmental barriers and enhancing environmental facilitators may assist to remediate ASD-related difficulties in the workplace. Autism Res 2019, © 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: This study sought to understand the perspectives of autistic individuals and key stakeholders on factors influencing if autistic adults get and keep jobs. Across Australia, Sweden, and the United States, focus groups and interviews were conducted to understand international perspectives on what helps and hinders getting and keeping a job for autistic individuals. The environment, including supports, relationships, attitudes, and services, were perceived to be the most important for workplace success. Intervention targeting barriers and facilitators in the workplace environment may support autistic adults to be successful in the labor market.


Assuntos
Transtorno do Espectro Autista/psicologia , Readaptação ao Emprego/psicologia , Readaptação ao Emprego/estatística & dados numéricos , Logro , Adulto , Austrália , Família , Feminino , Grupos Focais , Humanos , Internacionalidade , Entrevistas como Assunto , Masculino , Suécia , Estados Unidos
13.
Autism Res ; 16(4): 677, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37087600
14.
Autism Res ; 16(4): 681, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36929839
16.
Neurotoxicology ; 28(1): 59-66, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16942796

RESUMO

Perinatal exposure to methylmercury (MeHg) in rodents has been linked to changes in sensitivity to dopaminergic agents later in life. In an effort to determine the behavioral and neurochemical response to the indirect dopaminergic and serotonergic agonist amphetamine following neonatal exposure to MeHg, male BALB/c mice were administered MeHg during critical periods of neural development and challenged with amphetamine as adults. Mice were observed 15, 30 and 60 min after a single amphetamine injection (7.5 mg/kg i.p.) for presence of stereotypic and self-injurious behaviors, abnormal posture, and hyperthermia. Mice treated with 2 or 4 mg/kg MeHg on alternate days 3-15 of life demonstrated an increase in body temperature and the appearance of stereotypic and self-injurious behaviors not observed when amphetamine was administered to either vehicle-exposed mice or those treated with an equivalent total amount of MeHg administered on postnatal days 13 and 15. Neurochemical analysis of MeHg- and vehicle-exposed mice challenged with amphetamine or saline revealed alterations in dopaminergic and serotonergic activity which corresponded to the sensitized behavioral response to amphetamine. These observations demonstrate a critical window for MeHg exposure affecting the later appearance of amphetamine-induced self-injurious behavior and support the hypothesis that early exposure to environmental neurotoxicants may predispose individuals to engage in aberrant, intrusive behaviors later in life.


Assuntos
Anfetamina/toxicidade , Animais Recém-Nascidos/fisiologia , Comportamento Animal/efeitos dos fármacos , Química Encefálica/efeitos dos fármacos , Estimulantes do Sistema Nervoso Central/toxicidade , Compostos de Metilmercúrio/toxicidade , Ácido 3,4-Di-Hidroxifenilacético/metabolismo , Animais , Temperatura Corporal/efeitos dos fármacos , Dieta , Dopamina/metabolismo , Feminino , Ácido Homovanílico/metabolismo , Ácido Hidroxi-Indolacético/metabolismo , Camundongos , Camundongos Endogâmicos BALB C , Neostriado/efeitos dos fármacos , Neostriado/metabolismo , Postura , Córtex Pré-Frontal/metabolismo , Gravidez , Comportamento Autodestrutivo/induzido quimicamente , Serotonina/metabolismo , Comportamento Estereotipado/efeitos dos fármacos
17.
Autism ; 21(6): 772-784, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-28429618

RESUMO

Research studies using existing samples of individuals with autism spectrum disorders have identified differences in symptoms between males and females. Differences are typically reported in school age and adolescence, with similarities in symptom presentation at earlier ages. However, existing studies on sex differences are significantly limited, making it challenging to discern if, how, and at what point in development females with autism spectrum disorder actually exhibit a different behavioral presentation than males. The purpose of this study was to gather impressions from a large group of clinicians to isolate specific areas for future study of sex differences. Clinicians were surveyed about their opinions and perceptions of symptom severity in females, as compared to males, at different points during development. They were also asked to provide open-ended responses about female symptom presentation. Consistent with previous literature, clinicians noted more sex-related differences in restricted and repetitive behaviors and fewer differences for social communication features. Differences were most commonly observed in school age and adolescence, suggesting this time period as a critical and particularly vulnerable window for females with autism spectrum disorder. The results are discussed in the context of other male/female differences across development so that more targeted investigations of autism spectrum disorder sex differences across development.


Assuntos
Transtorno do Espectro Autista/psicologia , Adolescente , Fatores Etários , Transtorno do Espectro Autista/diagnóstico , Criança , Desenvolvimento Infantil , Pré-Escolar , Manual Diagnóstico e Estatístico de Transtornos Mentais , Feminino , Humanos , Lactente , Relações Interpessoais , Masculino , Índice de Gravidade de Doença , Fatores Sexuais , Comportamento Social , Inquéritos e Questionários , Adulto Jovem
19.
J Autism Dev Disord ; 36(6): 779-93, 2006 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-16609825

RESUMO

Autism symptoms, including impairments in language development, social interactions, and motor skills, have been difficult to model in rodents. Since children exposed in utero to sodium valproate (VPA) demonstrate behavioral and neuroanatomical abnormalities similar to those seen in autism, the neurodevelopmental effects of this antiepileptic agent were examined in mice following its pre- or postnatal administration. Exposed pups were evaluated in a battery of neurodevelopmental procedures designed to assess VPA-induced retardation (wherein a behavior fails to mature on schedule), regression (wherein a behavior does mature on time but then deteriorates), or intrusions (wherein normal behaviors are overshadowed by stereotypic or self-injurious behaviors). The resulting observations were interpreted in the context of this new strategy to model autism.


Assuntos
Anticonvulsivantes/toxicidade , Transtorno Autístico/induzido quimicamente , Modelos Animais de Doenças , Efeitos Tardios da Exposição Pré-Natal , Ácido Valproico/toxicidade , Animais , Animais Recém-Nascidos , Atenção/efeitos dos fármacos , Transtorno Autístico/diagnóstico , Transtorno Autístico/psicologia , Relação Dose-Resposta a Droga , Reação de Fuga/efeitos dos fármacos , Feminino , Deficiência Intelectual/induzido quimicamente , Deficiência Intelectual/diagnóstico , Deficiência Intelectual/psicologia , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Atividade Motora/efeitos dos fármacos , Destreza Motora/efeitos dos fármacos , Orientação/efeitos dos fármacos , Equilíbrio Postural/efeitos dos fármacos , Gravidez , Regressão Psicológica , Comportamento Autodestrutivo/induzido quimicamente , Comportamento Autodestrutivo/diagnóstico , Comportamento Autodestrutivo/psicologia , Comportamento Estereotipado/efeitos dos fármacos
20.
Curr Behav Neurosci Rep ; 3(3): 264-274, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28093577

RESUMO

PURPOSE OF REVIEW: Evidence has linked neuropsychiatric disorders with epigenetic marks as either a biomarker of disease, biomarker of exposure, or mechanism of disease processes. Neuropsychiatric epidemiologic studies using either target brain tissue or surrogate blood tissue each have methodological challenges and distinct advantages. RECENT FINDINGS: Brain tissue studies are challenged by small sample sizes of cases and controls, incomplete phenotyping, post-mortem timing, and cellular heterogeneity, but the use of a primary disease relevant tissue is critical. Blood-based studies have access to much larger sample sizes and more replication opportunities, as well as the potential for longitudinal measurements, both prior to onset and during the course of treatments. Yet, blood studies also are challenged by cell-type heterogeneity, and many question the validity of using peripheral tissues as a brain biomarker. Emerging evidence suggests that these limitations to blood-based epigenetic studies are surmountable, but confirmation in target tissue remains important. SUMMARY: Epigenetic mechanisms have the potential to help elucidate biology connecting experiential risk factors with neuropsychiatric disease manifestation. Cross-tissue studies as well as advanced epidemiologic methods should be employed to more effectively conduct neuropsychiatric epigenetic research.

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