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Sperm

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The title gets you, right? Well, on this week’s #ASFpodcast we report on a new study that examines epigenetic profiles of sperm and how they related to child outcomes. Do some of the marks on bio-dad’s sperm match to those found in kids with ASD? what about genes related to autism? Also, can parents be good proxies of their child’s intellectual ability? For the most part yes, but sometimes they tend to overestimate this ability. This means they are good, but not perfect reporters. How could they be if the child has a severe intellectual disability?

https://pubmed.ncbi.nlm.nih.gov/37097835/

https://pubmed.ncbi.nlm.nih.gov/37100868/

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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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The CDC speaks on prevalence, and we listen.

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This week we conduct an interview with Michelle Hughes, PhD, epidemiologist with the CDC, who answers all of our questions about how many people have autism, how they are counted, what has changed since the last count and why the CDC are counting more kids than they were 10 years ago.

You can read more about her here: https://www.linkedin.com/in/michellemergler/

Here is a link to the 8 year old counting study: https://pubmed.ncbi.nlm.nih.gov/36952288/

Here is the follow up to when they turned 16: https://pubmed.ncbi.nlm.nih.gov/36849336/

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When it comes to intervention, earlier is better

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This week, we talk to Whitney Guthrie from Children’s Hospital of Philadelphia who spent the last 6 years conducting the gold-standard randomized control trial that demonstrates intervention for social communication skills at 18 months shows greater effects than intervention starting at 27 months. If you wanted evidence that earlier is better, here it is! Interventions and supports are important at any age, but the critical window of development between 18-27 months is particularly important for long term development.

https://pubmed.ncbi.nlm.nih.gov/36922406/

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One in 36 and what it predicts

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The CDC released data from the Autism and Developmental Disabilities Monitoring Network (ADDM) on Thursday. In the past 2 years, the prevalence of autism has increased about 20%. Why? Are there more new cases or is diagnostic practices improving? For 20 years there has been fewer Black and Hispanic kids diagnosed. Is that still the case? Listen to this week’s #ASFpodcast to hear some early thoughts, the CDC will join us for an interview on April 20th:

https://www.cdc.gov/mmwr/volumes/72/ss/ss7202a1.htm

https://www.cdc.gov/ncbddd/autism/data.html

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Social Media is No Substitute for Clinical Expertise

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TikTok is overtaking the internet and many are using this platform to learn about a variety of psychiatric illnesses and psychological problems. But how accurate are these videos in sharing medical information? Could they be causing things like tics? Do they influence individuals to self-diagnose and cause mis-diagnosis? There is a new phenomenon labeled “munchausen by internet”, and while some of the videos might be helpful in raising awareness, others are just spreading lies and causing psychiatric problems. In other words: be careful about TikTok. If a social media platform shares videos that tell you to eat laundry detergent, maybe you should not listen to everything they say.

https://journals.sagepub.com/doi/full/10.1177/07067437221082854

https://pubmed.ncbi.nlm.nih.gov/35473358/

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The Science of Screeners for ASD

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Screening for autism is meant to cast a broad net to gather those who show enough features to be included for a full diagnostic evaluation. The most common of these tools is the MCHAT – the Modified Checklist for Autism in Toddlers. An author of the MCHAT, Diana Robins, and a colleague, Andrea Wieckowski and others gathered over 50 studies (English and other languages) in different types of samples (high likelihood and low likelihood) to determine how the MCHAT was doing in terms of finding infants with autism as well as excluding those without autism. It also touched on how well primary care doctors were doing in administering this tool. If you want to see the MCHAT for yourself or take it for your child, there is a FREE website, click here: https://mchatscreen.com

To read the paper, click here: https://pubmed.ncbi.nlm.nih.gov/36804771/

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Is it co-morbid or co-occurring?

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A new paper in Translational Psychiatry this week outlines the reasons why some conditions that occur with autism are actually co-morbid, and not co-occurring. The podcast will break down clues on why sometimes they are co-morbid, and present an argument on why they are important in understanding the vast heterogeneity of autism.

https://onlinelibrary.wiley.com/doi/10.1002/aur.2898

https://www.nature.com/articles/s41398-023-02374-w

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Animal models can explain heterogeneity

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Just like no two people are the same, no two strains of mice are the same. Using dozens of different strains of mice with and without a genetic mutation associated with autism called CHD8, researchers at University of Southern California showed great variability in the effect of this mutation on behaviors associated with neurodevelopmental disorders. This can reflect the great differences across people with autism and even people with a rare genetic syndrome associated with autism. It isn’t just one gene, it’s the other hundreds of genes that can contribute to susceptibility or resilience to different features of NDDs. One thing this study did not do was overlay environmental factors, which will also significantly influence the variability seen across the different background genetics in these mice.

https://pubmed.ncbi.nlm.nih.gov/36738737/