Kerala will continue to eat beef; BJP has no problem with it: Modi govt’s minister

Washington D.C., May 8: The prime time for brain development in a child's life is the first year, where the infant spends most of the time asleep. It is the time when neural connections form and sensory memories are encoded.

However, when sleep is disrupted, as occurs more often among children with autism, brain development may be affected, too.

New research led by the University of Washington finds that sleep problems in a baby's first 12 months may not only precede an autism diagnosis but also may be associated with altered growth trajectory in a key part of the brain, the hippocampus.

The study, which was published in the American Journal of Psychiatry, researchers report that in a sample of more than 400 taken of 6- to 12-month-old infants, those who were later diagnosed with autism were more likely to have had difficulty falling asleep.

It also states that this sleep difficulty was associated with altered growth trajectories in the hippocampus.

"The hippocampus is critical for learning and memory, and changes in the size of the hippocampus have been associated with poor sleep in adults and older children.

As many as 80 per cent of the children with autism spectrum disorder have sleep problems," said Annette Estes, director of the UW Autism Center and senior author of the study.

"In our clinical experience, parents have a lot of concerns about their children's sleep, and in our work on early autism intervention, we observed that sleep problems were holding children and families back," added Estes, who is also a UW professor of speech and hearing sciences.

"It could be that altered sleep is part-and-parcel of autism for some children. One clue is that behavioural interventions to improve sleep don't work for all children with autism, even when their parents are doing everything just right. This suggests that there may be a biological component to sleep problems for some children with autism," said Estes.

To consider links among sleep, brain development, and autism, researchers at the IBIS Network looked at MRI scans of 432 infants, surveyed parents about sleep patterns, and measured cognitive functioning using a standardized assessment.

At the outset of the study, infants were classified according to their risk for developing autism: Those who were at higher risk of developing autism -- about two-thirds of the study sample -- had an older sibling who had already been diagnosed.

Infant siblings of children with autism have a 20 per cent chance of developing autism spectrum disorder -- a much higher risk than children in the general population.

In the current study, 127 of the 432 infants were identified as "low risk" at the time the MRI scans were taken because they had no family history of autism.

They later evaluated all the participants at 24 months of age to determine whether they had developed autism. Of the roughly 300 children originally considered "high familial risk," 71 were diagnosed with autism spectrum disorder at that age.

Problems with sleep were more common among the infants later diagnosed with an autism spectrum disorder, as were larger hippocampi. No other subcortical brain structures were affected, including the amygdala, which is responsible for certain emotions and aspects of memory, or the thalamus, a signal transmitter from the spinal cord to the cerebral cortex.

The authors note that while parents reported more sleep difficulties among infants who developed autism compared to those who did not, the differences were very subtle and only observed when looking at group averages across hundreds of infants.

Sleep patterns in the first years of life change rapidly as infants transition from sleeping around the clock to a more adult-like sleep/wake cycle. Until further research is completed, Estes said, it is not possible to interpret challenges with sleep as an early sign of increased risk for autism.

New Delhi, Feb 3: Congress leader BK Hariprasad on Monday condemned BJP MP Anantkumar Hegde's remark on Mahatma Gandhi and termed him as "son" of Nathuram Godse, the assassin of the freedom fighter.

"Only sons of Nathuram Godse can make such comments on Mahatma Gandhi," Hariprasad said.

Hedge had attacked Mahatma Gandhi by calling the freedom struggle led by him a "drama" and also questioned as to how "such people" come to be called 'Mahatma' in India.

"None of these so-called leaders were beaten up by the cops even once. Their independence movement was one big drama. It was staged by these leaders with the approval of the British. It was not a genuine fight. It was an adjustment freedom struggle," he had said.

The Trinamool Congress also lent its support to Congress as its leader Saugata Roy said people like Anant Hegde cause shame to the nation. "We are a supporter of Gandhi and they (BJP) are Nathuram Godse supporters. People of this country should see how BJP MPs are as they insult father of the nation," he added.

BJP leaders too found it difficult to defend Hegde on the controversial remarks.

Senior leader Jagdambika pal was cautious in his defence and said, "The whole world knows about Gandhi and it may be his personal opinion."

Whereas senior BJP leaders avoid commenting on Hegde, Union Minister Ashwani Choubey said that Hegde should not have made the comment and added that Gandhi is a well-respected figure in the nation.

Another BJP MP from Haryana Sanjay Bhatia also tried to shy away from making a direct comment and instead said," Congress did not implement what Gandhi preached. It is Prime Minister Narendra Modi who implemented Gandhi's teachings in letter and spirit."