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Mozola MA, Peng X, Wendorf M, Alles S, Artiga L, Buchholz T, Camacho A, Charveron N, Clayborn J, Decker C, Deibel C, Donohue T, Draughon A, Ewings J, Feldworth M, Gane P, Goodwin J, Gunter T, Gutierrez M, Hovland R, Jechorek R, Jones W, Keskinen L, Lamproe B, Larson E, Manwarren H, Merkling A, Osing C, Pangloli P, Remes A, Richter E, Rogers A, Rose B, Ryser E, Secraw S, Slupik M, Wessinger A, Westmoreland R, Yan Z, Zahoor T, Zhang L. Evaluation of the GeneQuence® DNA Hybridization Method in Conjunction with 24-Hour Enrichment Protocols for Detection of Salmonella spp. in Select Foods: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/90.3.738] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A multilaboratory study was conducted to compare performance of the GeneQuence® DNA hybridization (DNAH) method incorporating new 24 h enrichment protocols and reference culture procedures for detection of Salmonella spp. in select foods. Six food types (raw ground turkey, raw ground beef, dried whole egg, milk chocolate, walnuts, and dry pet food) were tested by the DNAH method and by the culture methods of either the U.S. Department of Agriculture-Food Safety and Inspection Service (USDA-FSIS) or the U.S. Food and Drug Administration's Bacteriological Analytical Manual (FDA/BAM). Fifteen laboratories participated in the study. Four of the foods tested (raw ground turkey, dried whole egg, milk chocolate, and dry pet food), showed no statistically significant differences in performance between the DNAH method and the reference procedure as determined by Chi square analysis. Sensitivity rates for the DNAH method ranged from 92 to 100. The DNAH method, with the specific enrichment protocol evaluated, was found to be ineffective for detection of Salmonella spp. in walnuts. For raw ground beef, results from one trial showed a statistically significant difference in performance, with more positives obtained by the reference method. However, evidence suggests that the difference in the number of positives was likely due to lack of homogeneity of the test samples rather than to DNAH method performance.
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Hillerdal C, Knecht R, Jones W. Nunalleq: Archaeology, Climate Change, and Community Engagement in a Yup’ik Village. ARCTIC ANTHROPOLOGY 2019. [DOI: 10.3368/aa.56.1.4] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Keitel WA, Potter GE, Diemert D, Bethony J, El Sahly HM, Kennedy JK, Patel SM, Plieskatt JL, Jones W, Deye G, Bottazzi ME, Hotez PJ, Atmar RL. A phase 1 study of the safety, reactogenicity, and immunogenicity of a Schistosoma mansoni vaccine with or without glucopyranosyl lipid A aqueous formulation (GLA-AF) in healthy adults from a non-endemic area. Vaccine 2019; 37:6500-6509. [PMID: 31515141 DOI: 10.1016/j.vaccine.2019.08.075] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 08/27/2019] [Accepted: 08/28/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND Schistosomiasis caused by Schistosoma mansoni (Sm) is a chronic, debilitating and potentially deadly neglected tropical disease. The licensure of a vaccine to prevent schistosomiasis would represent a major breakthrough in public health. METHODS The safety and immunogenicity of a candidate Sm vaccine were assessed in this phase I, double-blind, dose-escalation trial. Seventy-two healthy Sm-naïve 18-50 year olds were randomized to receive 3 doses ∼ 8 weeks apart of saline placebo, or 10 µg, 30 µg, or 100 µg of recombinant Sm-Tetraspanin-2 vaccine formulated on aluminum hydroxide adjuvant (Sm-TSP-2/Al) with or without 5 µg of glucopyranosyl lipid A aqueous formulation (GLA-AF). Clinical and serologic responses were assessed for 1 year after dose 3. RESULTS Vaccines were safe and well-tolerated. The most common reactions were injection site tenderness and pain, and headache and fatigue. Tenderness and pain were more frequent in groups receiving vaccine with GLA-AF than placebo (p = 0.0036 and p = 0.0014, respectively). Injection site reactions among those given Sm-TSP-2/Al with GLA-AF lasted 1.22 and 1.33 days longer than those receiving Sm-TSP-2/Al without GLA-AF or placebo (p < 0.001 for both). Dose- and adjuvant-related increases in serum IgG against Sm-TSP-2 were observed. Peak IgG levels occurred 14 days after dose 3. Seroresponse frequencies were low among recipients of Sm-TSP-2/Al without GLA-AF, but higher among subjects receiving 30 µg or 100 µg of Sm-TSP-2/Al with GLA-AF. More seroresponses were observed among those given 30 µg or 100 µg of Sm-TSP-2/Al with GLA-AF compared to placebo (p = 0.023 and p < 0.001, respectively). Seroresponse frequencies were 0%, 30%, 50%, and 89%, respectively, among those given placebo, or 10 µg, 30 µg or 100 µg of Sm-TSP-2/Al with GLA-AF, suggesting a dose-response relationship for Sm-TSP-2/Al with GLA-AF (p = 0.0001). CONCLUSIONS Sm-TSP-2/Al with or without GLA-AF was safe and well tolerated in a Sm-naïve population. A vaccine like the one under development may represent our best hope to eliminating this neglected tropical disease.
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Li L, Bachevalier J, Hu X, Klin A, Preuss TM, Shultz S, Jones W. Topology of the Structural Social Brain Network in Typical Adults. Brain Connect 2019; 8:537-548. [PMID: 30280929 DOI: 10.1089/brain.2018.0592] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Although a large body of research has identified discrete neuroanatomical regions involved in social cognition and behavior (the "social brain"), the existing findings are based largely on studies of specific brain structures defined within the context of particular tasks or for specific types of social behavior. The objective of the current work was to view these regions as nodes of a larger collective network and to quantitatively characterize both the topology of that network and the relative criticality of its many nodes. Large-scale data mining was performed to generate seed regions of the social brain. High-quality diffusion MRI data of typical adults were used to map anatomical networks of the social brain. Network topology and nodal centrality were analyzed using graph theory. The structural social brain network demonstrates a high degree of global functional integration with strong local segregation. Bilateral dorsomedial prefrontal cortices and amygdala play the most central roles in the network. Strong probabilistic evidence supports modular divisions of the social brain into subnetworks bearing good resemblance to functionally classified clusters. The present network-driven approach quantifies the structural topology of the social brain as a whole. This work can serve as a critical benchmark against which to compare (1) developmental change in social brain topology over time (from infancy through adolescence and beyond) and (2) atypical network topologies that may be a sign or symptom of disorder (as in conditions such as autism, Williams syndrome, schizophrenia, and others).
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Gunalda J, Hosmer K, Hartman N, Smith L, Chapman B, Jones W, Irick M, Pariyadath M. Satisfaction Academy: A Novel Residency Curriculum to Improve the Patient Experience in the Emergency Department. MEDEDPORTAL : THE JOURNAL OF TEACHING AND LEARNING RESOURCES 2018; 14:10737. [PMID: 30800937 PMCID: PMC6342346 DOI: 10.15766/mep_2374-8265.10737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 07/13/2018] [Indexed: 11/18/2022]
Abstract
Introduction Patient satisfaction is a key indicator of health care value and an increasingly important metric used to assess emergency physician performance and often reimbursement. To our knowledge, there is no standardized curriculum within emergency medicine (EM) residency programs that focuses on the patient experience in EM. Methods Our novel resident curriculum is an organized approach to enhancing patient-centered care by optimizing the patient experience. It spans the academic year, with key topics organized into a quarterly time line. Topics include physician courtesy and respect, pain management, discussion of diagnostic and therapeutic interventions, timely communication, and delivery of quality care. Each quarter has three components: introduction/didactics, an interactive workshop, and stories and reflection. The instructional methods used include didactic lectures, role-playing, and group reflection and storytelling. Results Of 44 participants, 54.5% completed a preintervention survey, and 45.5% completed a postintervention survey. The surveys consisted of 5-point Likert scales measuring degree of agreement with statements that reflected desired behaviors and/or attitudes. On the postintervention survey, participants gave scores indicating general agreement with desired behaviors including sitting at the bedside, acknowledging all persons in the room, and giving an anticipated disposition, as well as with feeling more knowledgeable about patient satisfaction. Discussion Our Satisfaction Academy has filled a significant gap related to enhancing the patient experience. This curriculum is generalizable to other EM residency programs, and the interactive peer-to-peer format is both engaging and customizable.
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Latimer G, Marcum WR, Howard TK, Jones W, Phillips AM, Woolstenhulme N, Liu S, Weiss A, Campbell J, Moussaoui M, Jensen C. On the flow induced vibration of an externally excited nuclear reactor experiment. NUCLEAR ENGINEERING AND DESIGN 2018. [DOI: 10.1016/j.nucengdes.2018.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Shultz S, Klin A, Jones W. Neonatal Transitions in Social Behavior and Their Implications for Autism. Trends Cogn Sci 2018; 22:452-469. [PMID: 29609895 PMCID: PMC6554740 DOI: 10.1016/j.tics.2018.02.012] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 02/23/2018] [Accepted: 02/26/2018] [Indexed: 01/18/2023]
Abstract
Within the context of early infant-caregiver interaction, we review a series of pivotal transitions that occur within the first 6 months of typical infancy, with emphasis on behavior and brain mechanisms involved in preferential orientation towards, and interaction with, other people. Our goal in reviewing these transitions is to better understand how they may lay a necessary and/or sufficient groundwork for subsequent phases of development, and also to understand how the breakdown thereof, when development is atypical and those transitions become derailed, may instead yield disability. We review these developmental processes in light of recent studies documenting disruptions to early-emerging brain and behavior mechanisms in infants later diagnosed with autism spectrum disorder, shedding light on the brain-behavior pathogenesis of autism.
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Klin A, Jones W. An agenda for 21st century neurodevelopmental medicine: lessons from autism. Rev Neurol 2018; 66:S3-S15. [PMID: 29516447 PMCID: PMC6606044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
The future of neurodevelopmental medicine has the potential of situating child neurology at the forefront of a broad-based public health effort to optimize neurodevelopmental outcomes of children born with high-prevalence and diverse genetic, pre- and peri-natal, and environmental burdens compromising early brain development and leading to lifetime disabilities. Building on advancements in developmental social neuroscience and in implementation science, this shift is already occurring in the case of emblematic neurodevelopmental disorders such as autism. Capitalizing on early neuroplasticity and on quantification of trajectories of social-communicative development, new technologies are emerging for high-throughput and cost-effective diagnosis and for community-viable delivery of powerful treatments, in seamless integration across previously fragmented systems of healthcare delivery. These solutions could be deployed in the case of other groups of children at greater risk for autism and communication delays, such as those born extremely premature or with congenital heart disease. The galvanizing concept in this aspirational future is a public health focus on promoting optimal conditions for early brain development, not unlike current campaigns promoting pre-natal care, nutrition or vaccination.
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Sifre R, Olson L, Gillespie S, Klin A, Jones W, Shultz S. A Longitudinal Investigation of Preferential Attention to Biological Motion in 2- to 24-Month-Old Infants. Sci Rep 2018; 8:2527. [PMID: 29410484 PMCID: PMC5802706 DOI: 10.1038/s41598-018-20808-0] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 01/23/2018] [Indexed: 01/07/2023] Open
Abstract
Preferential attention to biological motion is an early-emerging mechanism of adaptive action that plays a critical role in social development. The present study provides a comprehensive longitudinal mapping of developmental change in preferential attention to biological motion in 116 infants at 7 longitudinal time points. Tested repeatedly from 2 until 24 months of age, results reveal that preferential attention to biological motion changes considerably during the first months of life. Previously reported preferences in both neonates and older infants are absent in the second month but do reemerge by month 3 and become increasingly pronounced during the subsequent two years. These results highlight the second month of life as a potentially critical transition period in social visual engagement.
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Klin A, Jones W. Una agenda para la medicina del neurodesarrollo en el siglo XXI: lecciones aportadas por el autismo. Rev Neurol 2018. [DOI: 10.33588/rn.66s01.2018039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Constantino JN, Kennon-McGill S, Weichselbaum C, Marrus N, Haider A, Glowinski AL, Gillespie S, Klaiman C, Klin A, Jones W. Infant viewing of social scenes is under genetic control and is atypical in autism. Nature 2017; 547:340-344. [PMID: 28700580 PMCID: PMC5842695 DOI: 10.1038/nature22999] [Citation(s) in RCA: 175] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 05/25/2017] [Indexed: 01/19/2023]
Abstract
Long before infants reach, crawl, or walk, they explore the world by looking: they look to learn and to engage1, giving preferential attention to social stimuli including faces2, face-like stimuli3, and biological motion4. This capacity—social visual engagement—shapes typical infant development from birth5 and is pathognomonically impaired in children affected by autism6. Here we show that variation in viewing of social scenes—including levels of preferential attention and the timing, direction, and targeting of individual eye movements—is strongly influenced by genetic factors, with effects directly traceable to the active seeking of social information7. In a series of eye-tracking experiments conducted with 338 toddlers—including 166 epidemiologically-ascertained twins, 88 non-twins with autism, and 84 singleton controls—we find high monozygotic twin-twin concordance (0.91) and relatively low dizygotic concordance (0.35). Moreover, the measures that are most highly heritable, preferential attention to eye and mouth regions of the face, are also those that are differentially diminished in children with autism (Χ2=64.03, P<0.0001). These results—which implicate social visual engagement as a neurodevelopmental endophenotype—not only for autism, but for population-wide variation in social-information-seeking8—reveal a means of human biological niche construction, with phenotypic differences emerging from the interaction of individual genotypes with early life experience7.
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Schlögl R, Jones W. The influence of the preparation method on the stability of graphite intercalation compounds with antimony chloride in air. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1984810877] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Sun Y, Jones W, Varikatt W, Chin R. Malignant glomus tumour – a case report and review of the literature. Pathology 2017. [DOI: 10.1016/j.pathol.2016.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bahruji H, Bowker M, Jones W, Hayward J, Ruiz Esquius J, Morgan DJ, Hutchings GJ. PdZn catalysts for CO2 hydrogenation to methanol using chemical vapour impregnation (CVI). Faraday Discuss 2017; 197:309-324. [DOI: 10.1039/c6fd00189k] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of PdZn bimetallic alloys on ZnO, TiO2 and Al2O3 supports was investigated, together with the effect of alloy formation on the CO2 hydrogenation reaction. The chemical vapour impregnation (CVI) method produced PdZn nanoparticles with diameters of 3–6 nm. X-ray photoelectron spectroscopy and X-ray diffraction revealed the changes in the structure of the PdZn alloy that help stabilise formate intermediates during methanol synthesis. PdZn supported on TiO2 exhibits high methanol productivity of 1730 mmol kgcat−1 h−1 that is associated with the high dispersion of the supported PdZn alloy.
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Abstract
OBJECTIVE Two hypotheses, gaze aversion and gaze indifference, are commonly cited to explain a diagnostic hallmark of autism: reduced attention to others' eyes. The two posit different areas of atypical brain function, different pathogenic models of disability, and different possible treatments. Evidence for and against each hypothesis is mixed but has thus far focused on older children and adults. The authors evaluated both mechanistic hypotheses in two sets of experiments at the time of initial diagnosis. METHOD Eye-tracking data were collected in 86 2-year-olds: 26 with autism, tested at initial diagnosis; 38 matched typically developing children; and 22 matched developmentally delayed children. In two experiments, the authors measured response to direct and implicit cueing to look at the eyes. RESULTS When directly cued to look at the eyes, 2-year-olds with autism did not look away faster than did typically developing children; their latency varied neither categorically nor dimensionally by degree of eye cueing. Moreover, direct cueing had a stronger sustained effect on their amount of eye-looking than on that of typically developing children. When presented with implicit social cues for eye-looking, 2-year-olds with autism neither shifted their gaze away nor more subtly averted their gaze to peripheral locations. CONCLUSIONS The results falsify the gaze aversion hypothesis; instead, at the time of initial diagnosis, diminished eye-looking in autism is consistent with passive insensitivity to the social signals in others' eyes.
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French JI, McGregor JA, Jones W, Draper D, Parker R, McFee J. Bacterial vaginosis and increased vaginal fluid phospholipase A2: defining women at risk for preterm birth. Int J STD AIDS 2016. [DOI: 10.1258/0956462971919390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Allam O, Gray WA, Jones W, Bater A, Morrey D. Designing an information interface to support sharing of information in cancer care. Health Informatics J 2016. [DOI: 10.1177/146045820200800305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper describes the design, implementation and testing of a functional prototype interface which enables primary healthcare teams to access the information system supporting clinical oncology specialists in South Wales, UK. A lack of information sharing has been recognized for some time as a barrier to improving the primary care of cancer patients. This extension to the existing ISCO information system will allow sharing of information about patient management at all levels of cancer patient support (general practitioners, hospital-based clinicians and palliative care teams). The application was designed to allow general practitioners to gain access to the existing system. This will give all healthcare professionals interested in a cancer patient's care the advantage of accessing detailed multiple providers' electronic casenotes in almost real time, thus improving communication of information within a care team. However, no attempt was made to include the much bigger issue of patients and their families or carers in the scope of the project at this stage, as this is an area requiring separate investigation. The pilot also enables general practitioners to determine the information they require and the information they need to be able to communicate with the cancer specialists.
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Caravaca A, Jones W, Hardacre C, Bowker M. H 2 production by the photocatalytic reforming of cellulose and raw biomass using Ni, Pd, Pt and Au on titania. Proc Math Phys Eng Sci 2016; 472:20160054. [PMID: 27493561 PMCID: PMC4971237 DOI: 10.1098/rspa.2016.0054] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Here, we report a method for sustainable hydrogen production using sunlight and biomass. It is shown that cellulose can be photoreformed to produce hydrogen, even in solid form, by use of metal-loaded titania photocatalysts. The experiments performed verified that the process is enabled by initial hydrolysis via glucose, which itself is shown to be efficiently converted to produce hydrogen by photocatalysis. Importantly, it is shown that not only precious metals such as Pt, Pd and Au can be used as the metal component, but also much more economic and less environmentally damaging Ni is effective. Even more importantly, we show for the first time, to the best our knowledge, that fescue grass as raw biomass can be effective for hydrogen production without significant pre-treatment. This provides additional benefits for the efficiency of biomass hydrogen production, because fewer processing steps for the raw material are required than in the production of purer forms of cellulose, for example.
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Doedens J, Jones W, Hill K, Mason M, Linsley P, Mease P, Dall'Era M, Aranow C, Martin R, Cohen S, Fleischmann R, Kivitz A, Burge D, Chaussabel D, Elkon K, Posada J, Gabel C. OP0186 Immune Complex Bound U1 and Y1 RNA Correlates with Interferon-Stimulated Gene Expression and Disease Activity: An Observational Study of Sysytemic Lupus Erythematosus Patients. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Licon A, Ford J, Defoor D, Crownover R, Li Y, Ha C, Eng T, Jones W, Papanikolaou N, Stathakis S, Mavroidis P. SU-F-T-411: A Quantitative Parameter for Treatment Plan Quality. Med Phys 2016. [DOI: 10.1118/1.4956596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Burger-Caplan R, Saulnier C, Jones W, Klin A. Predicting social and communicative ability in school-age children with autism spectrum disorder: A pilot study of the Social Attribution Task, Multiple Choice. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2016; 20:952-962. [PMID: 27121244 DOI: 10.1177/1362361315617589] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Social Attribution Task, Multiple Choice is introduced as a measure of implicit social cognitive ability in children, addressing a key challenge in quantification of social cognitive function in autism spectrum disorder, whereby individuals can often be successful in explicit social scenarios, despite marked social adaptive deficits. The 19-question Social Attribution Task, Multiple Choice, which presents ambiguous stimuli meant to elicit social attribution, was administered to children with autism spectrum disorder (N = 23) and to age-matched and verbal IQ-matched typically developing children (N = 57). The Social Attribution Task, Multiple Choice performance differed between autism spectrum disorder and typically developing groups, with typically developing children performing significantly better than children with autism spectrum disorder. The Social Attribution Task, Multiple Choice scores were positively correlated with age (r = 0.474) while being independent from verbal IQ (r = 0.236). The Social Attribution Task, Multiple Choice was strongly correlated with Vineland Adaptive Behavior Scales Communication (r = 0.464) and Socialization (r = 0.482) scores, but not with Daily Living Skills scores (r = 0.116), suggesting that the implicit social cognitive ability underlying performance on the Social Attribution Task, Multiple Choice is associated with real-life social adaptive function.
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Marrus N, Glowinski AL, Jacob T, Klin A, Jones W, Drain CE, Holzhauer KE, Hariprasad V, Fitzgerald RT, Mortenson EL, Sant SM, Cole L, Siegel SA, Zhang Y, Agrawal A, Heath A, Constantino JN. Rapid video-referenced ratings of reciprocal social behavior in toddlers: a twin study. J Child Psychol Psychiatry 2015; 56:1338-46. [PMID: 25677414 PMCID: PMC4775094 DOI: 10.1111/jcpp.12391] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/18/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND Reciprocal social behavior (RSB) is a developmental prerequisite for social competency, and deficits in RSB constitute a core feature of autism spectrum disorder (ASD). Although clinical screeners categorically ascertain risk of ASD in early childhood, rapid methods for quantitative measurement of RSB in toddlers are not yet established. Such measurements are critical for tracking developmental trajectories and incremental responses to intervention. METHODS We developed and validated a 20-min video-referenced rating scale, the video-referenced rating of reciprocal social behavior (vrRSB), for untrained caregivers to provide standardized ratings of quantitative variation in RSB. Parents of 252 toddler twins [Monozygotic (MZ) = 31 pairs, Dizygotic (DZ) = 95 pairs] ascertained through birth records, rated their twins' RSB at two time points, on average 6 months apart, and completed two developmental measures, the Modified Checklist for Autism in Toddlers (M-CHAT) and the MacArthur Communicative Development Inventory Short Form (MCDI-s). RESULTS Scores on the vrRSB were fully continuously distributed, with excellent 6-month test-retest reliability ([intraclass correlation coefficient] ICC = 0.704, p < .000). MZ twins displayed markedly greater trait concordance than DZ twins, (MZ ICC = 0.863, p < .000, DZ ICC = 0.231, p < .012). VrRSB score distributions were highly distinct for children passing versus failing the M-CHAT (t = -8.588, df = 31, p < .000), incrementally improved from 18-24 months, and were inversely correlated with receptive and expressive vocabulary on the MCDI-s. CONCLUSIONS Like quantitative autistic trait ratings in school-aged children and adults, toddler scores on the vrRSB are continuously distributed and appear highly heritable. These ratings exhibited minimal measurement error, high inter-individual stability, and developmental progression in RSB as children matured from 18-24 months, supporting their potential utility for serially quantifying the severity of early autistic syndromes over time and in response to intervention. In addition, these findings inform the genetic-environmental structure of RSB in early typical development.
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Hull NC, O’Toole D, Miller MM, Shoults H, Deck R, Jones W, Johnson GC, Shaw DP, Schumaker BA. Canine dysautonomia in a litter of Havanese puppies. J Vet Diagn Invest 2015; 27:627-31. [DOI: 10.1177/1040638715595838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Canine dysautonomia is a sporadic, generally fatal disease that rarely affects groups of related animals. Four 10-week-old Havanese puppies from a litter of 5 developed clinical signs of canine dysautonomia. The 4 affected dogs were exposed to an outdoor environment, whereas the fifth littermate was not exposed to the outdoors and remained clinically healthy. Clinical signs of dysautonomia developed 10–16 days after going outside the house. An unrelated dog also developed dysautonomia after exposure to 1 of the affected Havanese littermates. All 5 dogs had morphological changes consistent with dysautonomia (widespread neuronal degeneration in autonomic ganglia, select brainstem nuclei, and ventral horn motor neurons). Differential diagnoses were excluded through negative toxicological evaluation, fecal parasite screening, negative Canine distemper virus reverse transcription polymerase chain reaction, fluorescent antibody testing, attempted virus isolation, and electron microscopy. The 5 affected dogs were in the Kansas City, Missouri area, where there is a high incidence of dysautonomia.
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Klin A, Shultz S, Jones W. Social visual engagement in infants and toddlers with autism: early developmental transitions and a model of pathogenesis. Neurosci Biobehav Rev 2015; 50:189-203. [PMID: 25445180 PMCID: PMC4355308 DOI: 10.1016/j.neubiorev.2014.10.006] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 10/01/2014] [Accepted: 10/07/2014] [Indexed: 11/20/2022]
Abstract
Efforts to determine and understand the causes of autism are currently hampered by a large disconnect between recent molecular genetics findings that are associated with the condition and the core behavioral symptoms that define the condition. In this perspective piece, we propose a systems biology framework to bridge that gap between genes and symptoms. The framework focuses on basic mechanisms of socialization that are highly-conserved in evolution and are early-emerging in development. By conceiving of these basic mechanisms of socialization as quantitative endophenotypes, we hope to connect genes and behavior in autism through integrative studies of neurodevelopmental, behavioral, and epigenetic changes. These changes both lead to and are led by the accomplishment of specific social adaptive tasks in a typical infant's life. However, based on recent research that indicates that infants later diagnosed with autism fail to accomplish at least some of these tasks, we suggest that a narrow developmental period, spanning critical transitions from reflexive, subcortically-controlled visual behavior to interactional, cortically-controlled and social visual behavior be prioritized for future study. Mapping epigenetic, neural, and behavioral changes that both drive and are driven by these early transitions may shed a bright light on the pathogenesis of autism.
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Klin A, Wetherby AM, Woods J, Saulnier C, Stapel-Wax J, Klaiman C, Jones W, Rubin E, Scahill L, Call N, Bearss K, Gunter C, Courtemanche CJ, Lemieux A, Cox JC, Mandell DS, Van Decar JP, Miller RA, Shireman CL. Toward innovative, cost-effective, and systemic solutions to improve outcomes and well-being of military families affected by autism spectrum disorder. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2015; 88:73-9. [PMID: 25745376 PMCID: PMC4345541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The burdens faced by military families who have a child with autism are unique. The usual challenges of securing diagnostic, treatment, and educational services are compounded by life circumstances that include the anxieties of war, frequent relocation and separation, and a demand structure that emphasizes mission readiness and service. Recently established military autism-specific health care benefits set the stage for community-viable and cost-effective solutions that can achieve better outcomes for children and greater well-being for families. Here we argue for implementation of evidence-based solutions focused on reducing age of diagnosis and improving access to early intervention, as well as establishment of a tiered menu of services, individualized to the child and family, that fit with the military ethos and system of health care. Absence of this new model of care could compromise the utility and sustainability of the autism-specific benefit.
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