Prof A M Khan is new Registrar (Administration) of Mangalore University

Bengaluru, May 15: There is no trace of community spread of COVID-19 pandemic in Karnataka due to the strict measures taken by the State Government, Medical Education Minister Dr K Sudhakar said on Friday.

All those tested positive for the virus here have arrived from other states and are currently being treated in quarantine centres, he tweeted.

Over 25 per cent of the COVID-19 positive cases, which were detected in the state, were related to those who had either come from abroad or other states, and only about 7 per cent cases were associated with the influenza-like diseases, his tweet further read.

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 26: After Yogi Adityanath said that no state can take manpower from Uttar Pradesh without his government's permission, Karnataka Pradesh Congress Committee (KPCC) president DK Shivakumar on Tuesday termed the Uttar Pradesh Chief Minister's move as "unconstitutional" and "against the right to freedom of movement."

"Uttar Pradesh Chief Minister Yogi Adityanath's move to restrict hiring people of Uttar Pradesh is unconstitutional and goes against the right to freedom of movement. Mr Yogi, please note that UP is not the private property of your govt. The people of Uttar Pradesh don't need your government's permission to work anywhere in India," Shivakumar tweeted.

"Mr Yogi doesn't understand the basic rules of governance in a democracy. Such actions lack common sense and will only make the people of Uttar Pradesh suffer more. When it's convenient for BJP, it's One Nation, when it's not, it's different states and different people. Heights of hypocrisy," he added.

Adityanath had on Monday said that the state government will provide social security and insurance to labourers and no state can take manpower from Uttar Pradesh without his government's permission.

"If any state wants manpower, they cannot take our people from the state without our permission as there were reports of misbehaviour with them in other states. We are taking full responsibility for labourers' social security. We will provide every kind of security to them including insurance. Wherever they will go, we will always stand by them," Yogi said.

The Chief Minister said that skill mapping is being done in Uttar Pradesh and a commission will be set up for labourers to ensure employment for them.

On Sunday, Adityanath had ordered the formation of a 'Migration Commission' for the purpose of providing the workers, who have returned to the state during the lockdown phase, with employment suited to their skills.