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Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study
Dissertation (M.Ed)--University of Pretoria, 2006.
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University of Pretoria
2013
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| _version_ | 1867613671298957313 |
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| access_status_str | Open Access |
| author2 | Naude, H. |
| author_browse | Naude, H. |
| author_facet | Naude, H. |
| collection | Thesis |
| dc_rights_str_mv | © 2006, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (M.Ed)--University of Pretoria, 2006. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/23190 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:39:51.199Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/23190 Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study Naude, H. claassenmarleen@yahoo.com Claassen, Marleen Glucocorticoids Serotonin Digoxin Autistic disorder Intra-uterine deprivation Hpa-axis Sub-optimal placental nutrient supply Prenatal stress Neurobiological developmental disorder UCTD Dissertation (M.Ed)--University of Pretoria, 2006. This research project explores the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder. The neurobiological impact of stress prior to the 28th week of gestation might produce structural neural changes, specifically regarding the cerebellum, the brain stem and limbic pathways, including the hippocampal area, which concept relates closely to the pathogenesis of autism. In this research project a significant focus is placed on prenatal hipothalamic-pituary-adrenal (HPA) activity due to the HPA axis’ interactivity with cortisol, digoxin and serotonin, as these biochemicals are significantly implicated in programmed foetal development, postnatal cortical behaviour, postnatal learning, as well as in functional impairment of socialization, communication and imagery associated with autism. Based upon the rationale of this research project and the conceptualisation of the topic of interest, the research problem was formulated as follows: In what unique ways does prenatal stress contribute to the pathogenesis of autism as a neurobiological developmental disorder? Sub questions included: Did the mother of the dizygotic twins experience significant stress during the period of gestation? What structural brain differences can be observed among the dizygotic twins at hand of MR-imaging? To which periods of prenatal development can these structural differences be related? How do these differences account for sensory, motor, cognitive, and affective behavioural differences among the dizygotic twins? What plasma differences can be observed among the dizygotic twins at hand of blood sampling? How does elevation of pre- and postnatal glucocorticoids relate to plasma difference among the dizygotic twins? How do these plasma differences account for sensory, motor, cognitive, and affective behavioural differences among the dizygotic twins? This research project represents quantitative research. The mode of inquiry is non-experimental at hand of a single dizygotic twin study. The following data generating strategies were employed: clinical intake interviews, administration of a diagnostic stress inventory and the 16-PF Questionnaire, MR-imaging, and the collection of blood plasma pathology results. Educational Psychology unrestricted 2013-09-06T14:43:40Z 2006-06-26 2013-09-06T14:43:40Z 2006-03-15 2006 2006-03-15 Dissertation Claassen, M 2006, Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study, M.Ed dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/23190 > http://hdl.handle.net/2263/23190 http://upetd.up.ac.za/thesis/available/etd-03152006-223236/ © 2006, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf University of Pretoria |
| spellingShingle | Glucocorticoids Serotonin Digoxin Autistic disorder Intra-uterine deprivation Hpa-axis Sub-optimal placental nutrient supply Prenatal stress Neurobiological developmental disorder UCTD Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study |
| title | Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study |
| title_full | Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study |
| title_fullStr | Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study |
| title_full_unstemmed | Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study |
| title_short | Exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder : a dizygotic twin study |
| title_sort | exploring the contribution of prenatal stress to the pathogenesis of autism as a neurobiological developmental disorder a dizygotic twin study |
| topic | Glucocorticoids Serotonin Digoxin Autistic disorder Intra-uterine deprivation Hpa-axis Sub-optimal placental nutrient supply Prenatal stress Neurobiological developmental disorder UCTD |
| url | http://hdl.handle.net/2263/23190 http://upetd.up.ac.za/thesis/available/etd-03152006-223236/ |