Detecting autism from the very first moments: a promising lead in the blood of newborns

 

A Japanese study reveals that analyzing blood samples taken at birth could uncover early markers of autistic development. While these findings offer fascinating possibilities, scientists emphasize that this is just one step toward a better understanding of this neurodevelopmental disorder.

A key lipid in the study of autistic disorders

For a long time, researchers have been trying to unravel the mysteries of autism spectrum disorder (ASD). Is it a matter of heredity? External factors? Or a combination of both? A recent Japanese study conducted at Fukui University sheds light on an intriguing element:  diHETrE , a fatty acid detected in umbilical cord blood.

This lipid compound, derived from arachidonic acid, has been shown to correlate with certain symptoms of autism spectrum disorder (ASD) observed in children six years later. The study, conducted on 200 participants, demonstrated that  high concentrations of diHETrE corresponded to challenges in social interactions , while  lower levels were linked to repetitive behaviors . This association appeared more pronounced in girls.

The crucial importance of this discovery

Being able to identify a potential risk of autism spectrum disorder (ASD) at birth would represent a major breakthrough. This would allow for the implementation of  early support measures , the effectiveness of which on cognitive and emotional development is already well-established.

Professor Hideo Matsuzaki, the study’s principal investigator, explains:  “Our observations indicate that variations in diHETrE during gestation significantly influence subsequent development.”  He believes this biomarker could become a  crucial screening tool  in the coming years.

Towards partial prevention of autistic characteristics?

Even more fascinating: scientists hypothesize that modulating the metabolism of this fatty acid during pregnancy could  help alleviate certain autistic symptoms . This isn’t about “treating” autism—a much-debated concept—but rather about better understanding its mechanisms of development.

Polyunsaturated fatty acids  (PUFAs)  such as diHETrE play an active role in inflammatory processes in the developing brain. Our body synthesizes them from our diet (particularly via omega-6), and these substances can have  both positive and negative impacts  depending on their concentration and balance.

  

Conclusions to be interpreted with caution

Despite these encouraging prospects, the researchers – including Professor James McPartland of Yale – stress the need for  caution . They describe this study as “exploratory”: it points in a direction, but does not yet allow for direct clinical applications.

Several reasons explain this reservation:  the methodology used to assess ASD  is not perfect. It needs to be combined with other diagnostic approaches to improve its reliability. Furthermore, the results obtained from 200 children need to be validated in much larger cohorts to have general applicability.

The true scope of this discovery

In essence, this research represents  not a revolution, but a significant advance . It does not allow for the detection of autism at birth, but it  identifies a biological marker  which, combined with other advances, could improve support from the earliest stages of development.

Above all, it highlights a fundamental aspect:  the determining influence of the intrauterine environment  on neurological development. Like a young plant that depends on the quality of its soil, our brain is shaped from the earliest stages of existence.