Flight chartered by KCF brings 174 stranded NRIs from Qatar to Mangaluru

Mangaluru, Apr 4: No positive case of coronavirus has been detected in Dakshina Kannada district as per the latest update released by the district administration on Friday.

Test results of throat swab samples of 16 people with suspected symptoms were received today and all of them were negative.

A total of 38,518 people have been screened for coronavirus in Dakshina Kannada district till date with 72 people being screened today.

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.

Bengaluru, May 19: Containment zones in Karnataka will be much smaller in size under the latest lockdown norms. However, rules and loopholes will be tightened and action against violators will be stringent in order to check the spread of the disease.

Revised guidelines issued by the Centre to the state, reveal containment zones are delineated based on mapping of cases and contacts. Intensive action will be carried out in these areas with the aim of breaking the chain of transmission. Therefore, the area of a containment zone should be appropriately defined by the district administration/local urban bodies with technical inputs at local level.

The health department is considering shrinking the size of containment zones from the existing 100 metres to open up more space for economic activities. Medical education minister K Sudhakar, also a member of the Covid taskforce, said additional chief secretary (health department) Javed Akthar will issue a new definition of a containment zone after the Covid-19 taskforce holds its next meeting.

“We are planning to further shrink it and restrict containment zones to an apartment complex, independent house or even a lane where the Covid-19 patient resides,” Sudhakar said. He went on to say bigger containment zones will impede businesses and normal activities in the vicinity, something which the government wants to avoid.

The minister said Karnataka will also do away with colour-coding districts. “With restrictions being relaxed for almost all activities, it does not make sense to pursue with colour codes. It is either containment zone or outside containment zone,” he said.

In rural areas, the minister said containment zones will be identified by the taluk heads. Government sources say it is difficult to restrict activities to certain areas or smaller location in rural areas as farmers and people will have to travel to the outskirts of their villages for their livelihood.

An official said, a containment operation (large outbreak or cluster) is deemed successful when no case is reported in 28 days from the containment zone.