Biomedical research on autism in low- and middle-income countries: Considerations from the South African context.

Autism Spectrum Disorder (ASD) is a neurodevelopmental condition characterized by social/communicative difficulties and perseverative behaviours. While research on autism has flourished recently, few studies have been conducted on the disorder in non-Western contexts. In low- and middle-income countries (LMICs), biomedical research on autism is required to better understand the needs of the population and to develop contextually appropriate interventions. However, autistic individuals are a vulnerable study population and LMICs present with various considerations. While the presentation of autism is heterogeneous, stigma is a common social consequence affecting research. Drawing specifically on the South African context, the ethical intersections of these issues are discussed, along with the limitations of the current informed consent process. Community engagement is recommended as an adjunct to informed consent to ensure that biomedical research is conducted in a more inclusive way. Practical pointers are provided for implementing systematic support for conducting community engagement alongside biomedical research.

The relationship between balance and urinary cortisol and neopterin in autistic children.

Autism Spectrum Disorder (ASD) is a neurodevelopmental condition characterized by stereotyped behavior, restricted interests and social/communicative deficits. The physiological etiology of ASD is not currently understood, however recent research has implicated dysregulation of the immune system as a central feature. The interplay between the stress systems, the immune system and the brain has been well-documented and implicated in other psychiatric and neurological disorders. This interplay suggests a role for the hypothalamic-pituitary-adrenal (HPA) axis in the etiology of ASD. We assessed levels of urinary cortisol and neopterin as markers of immune function and HPA activation in a cohort of 50 children from the central Johannesburg region. Additionally, we used the Autism Treatment Evaluation Checklist to assess autistic symptomatology and the Bruininks-Oseretsky Motor Proficiency Test (Second Edition) (BOT-2) to assess motor skills. No relationships were found between cortisol and autistic symptomatology. No relationships were found between neopterin and any of the other measures. However, a relationship was observed between urinary cortisol and performance on balance-related tasks from the BOT-2 (P < 0.05). Our findings support a theory of neurological interconnectedness between postural modulation and activation of the stress system, which has not previously been documented in children with ASD.