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More about the environmental influences in autism

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New research points to a previously understudied but fascinating mechanism by which environmental factors may lead to autism: it’s called the “GABA/glutamate switch” which is a critical period in development when certain cells turn from turning on cell activity to turning them off. These environmental factors may delay this process leading to long term effects on the developing brain consistent with autism. While this data on the mechanism is brand new, the topic of the environment in autism was inspired by a recent effort at NIEHS which is developing an interactive database for people to access information about what environmental exposures have been studied and how in autism.

https://www.niehs.nih.gov/news/events/aware

https://www.pnas.org/doi/epub/10.1073/pnas.2406928121

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Breakthrough for those with rare genetic disorders

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This week, more on genetics as an influence to an autism diagnosis with a twist: can genetics lead to a specific treatment for core symptoms – across the board? How do you measure such broad symptoms? Our Rett Syndrome family friends and colleagues developed a novel outcome measure to capture what was most important to them, and the FDA approved it for use in a clinical trial. Years later, a new drug was approved that led to a reduction in behaviors associated with Rett Syndrome. Autism can take a lesson from this. In addition, can the genetics of autism be explained by parents with similar phenotypes? This is called assortative mating. The answer is complex.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10450502/pdf/fped-11-1229553.pdf

https://www.nature.com/articles/s41591-023-02398-1

https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/38877467

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What happens to premature infants as they get older?

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As health care and outcomes for very premature infants has improved, scientists are able to track their longer term behavioral development, and that includes risk of developmental disorders like autism. On this week’s #ASFpodcast, Dr. Jessica Bradshaw discusses her recent research examining biological predictors like body temperature and heart rate and how they are linked to early autism features like social communication deficits in toddlerhood. All parents of pre-meet need to be vigilant and lean into resources like @BabyNavigator to help track their infant’s development.

https://www.nature.com/articles/s41372-024-01942-2

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The Trouble with Transitions

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This podcast has not covered transition from adolescence to adulthood in the past, probably because there has not been a lot of research in this area. Luckily, recently there has been a surge of investigations and scientifically – supported interventions and recommendations for individuals who are transitioning to adulthood. This podcast reviews the latest in where the gaps are and identified some (of many) areas that need further research. Here are the references that will be helpful.

https://pubmed.ncbi.nlm.nih.gov/38493400/

https://pubmed.ncbi.nlm.nih.gov/38501189/

https://pubmed.ncbi.nlm.nih.gov/38423723/

https://www.autismspeaks.org/tool-kit/transition-tool-kit

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How to predict severe and dangerous behavior

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On the first podcast of 2024, we describe a new paper in the Journal of the American Medical Association or JAMA which uses physiological measurements like heart rate and skin conductance to predict severe and dangerous behaviors, specifically aggression. If aggression can be predicted, it might be able to be prevented. It turns out aggression can be predicted up to 3 minutes before an episode occurs, in the future these measures can be used to possibly redirect aggression. In a separate study, the issue of stigma is addressed. There is an intense debate over “person first” vs. “identity first” language in autism, promoting recommendations of using one over the other because fear that person first language promotes stigma against autism. A new study shows that there is no added prejudice or fear using either person first or identity first language, but the stigma associated with schizophrenia is worse than it is for autism. What contributes to stigma? There is a wide range of experiences and perceptions of autism that need to be addressed. It’s not as simple as the language used.

https://pubmed.ncbi.nlm.nih.gov/38127348/

https://pubmed.ncbi.nlm.nih.gov/37965364/

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All who wander are not lost. But many are lost and need help.

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In recognition of September 26th, this podcast explores one of the more dangerous issues in autism: wandering. But it’s really not wandering in the traditional sense. Wandering in autism mostly means running off, bolting, deliberately with intent and without permission. Obviously this leads to some very dangerous situations for people on the spectrum. How can it be mitigated or understood? Some behavioral therapies are helpful, but new technologies have allowed for more options to bring back loved ones that have run off unexpectedly. Finally, the community needs to be better aware of possible stressors or triggers that trigger a wandering episode and work together with families to prevent running off. This problem is not caused by one thing, and the community needs multiple solutions to keep kids and adults safe.

www.september26.org

https://pubmed.ncbi.nlm.nih.gov/37492814/

https://pubmed.ncbi.nlm.nih.gov/32576789/

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How many people can be described as having “profound autism”?

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Quick answer: 26.7%. But what is “profound autism” and why is this label necessary? Have the rates of profound autism changed over time? How many do not have profound autism and are their needs different and how? Listen to this week’s ASF podcast and read the paper here: https://autismsciencefoundation.org/wp-content/uploads/2023/04/CDC-Profound-Autism-Statistics_ASF-Copy.pdf

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Have things changed for the autism community in the last 40 years?

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On this week’s podcast, we interview Dr. Giacomo Vivanti from the AJ Drexel Autism Institute who, together with Daniel Messinger from University of Miami, wrote an analysis of how research and intervention have changed since the DSMIII was written 40 years ago. They include theories of the causes of autism, the theories of the deficits and strengths of autism as it has changed over time, as well as intervention styles to meet the expanding understanding of autism. You can read the paper below, but Dr. Vivanti gives a great summary in a 30 minute interview!

https://pubmed.ncbi.nlm.nih.gov/33491120/

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All about ABA

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The practice of ABA, or applied behavioral analysis, can be easily misunderstood. Rather than a single procedure, ABA is a variety of techniques that can be applied to different situations to improve communication, reduce aggression, and improve the quality of life of people on the spectrum. Why is it getting a bad reputation? Is the ABA of today the same as it was in the 1960’s? And what benefits does the techniques and principles of ABA confer to those on the spectrum? Listen to today’s #ASFpodcast which also includes footage from Melanie Pellecchia’s Day of Learning presentation.

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Don’t say “….all autistic adults”

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While there are commonalities across autistic adults on many things, they differ. It might be time to stop saying “…..all autistic adults” when describing those on the spectrum. For example, for the most part, most autistic adults prefer email or text over other methods except when talking to friends and family. It was not universal, but the most preferred methods. This is important for scientists to want to gather the input from autistic adults – use email and online surveys NOT the telephone. But even these online surveys have problems. Large online research studies have the advantage of gathering large sets of data from geographically diverse people in a short period of time, but they may be biased if they don’t report who answered them. Recommendations for how to at least deal with diversity in scientific literature is included.

https://pubmed.ncbi.nlm.nih.gov/34169750/

https://pubmed.ncbi.nlm.nih.gov/34169230/