Sleep disorder linked with brain changes found in dementia
Sydney, July 5: A sleep disorder that causes repeated shallow or paused breathing may be associated with changes in brain structure that are also seen in the early stages of dementia.
Obstructive sleep apnoea (OSA), common among elderly, is a condition where the walls of the throat relax and narrow during sleep, stopping breathing, and is known to reduce levels of oxygen in the blood. It has also been linked with heart diseases, strokes and cancer.
The new study suggested that the drop in oxygen may be linked to a shrinking of the brain's temporal lobes and a corresponding decline in memory.
"Between 30 and 50 per cent of the risk for dementia is due to modifiable factors, such as depression, high blood pressure, obesity and smoking. In recent years, researchers have recognized that various sleep disturbances are also risk factors for dementia," said lead author, Sharon Naismith, from the University of Sydney, Australia.
"We wanted to look specifically at obstructive sleep apnoea and its effects on the brain and cognitive abilities," Naismith added.
In the study, published in European Respiratory Journal, the researchers analysed data from nearly 100 participants aged between 51 and 88 years, who had visited doctors with concerns over their memory or mood but had no OSA diagnosis.
The results showed that patients who had low levels of oxygen in their blood while they were sleeping tended to have reduced thickness in the left and right temporal lobes of the brain -- regions known to be important in memory and affected dementia.
Further, the team found that this alteration in the brain was linked with participant's poorer ability to learn new information.
"There is no cure for dementia so early intervention is the key. On the other hand, we do have an effective treatment for OSA. This research shows that diagnosing and treating OSA could be an opportunity to prevent cognitive decline before it's too late," Naismith added.
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LoP Ashoka targets CM govt over corruption, says being 'shameless' in public life not forgivable
Bengaluru (PTI): Targeting Chief Minister Siddaramaiah and the Congress government in Karnataka on corruption, BJP leader R Ashoka on Friday said, being foolish was forgivable, but being "shameless" in public life was not.
The Leader of Opposition in the state Assembly claimed that in just 30 months of its tenure, the Congress administration has broken every previous record on corruption-related controversies.
He was responding to Siddaramaiah's post on 'X' on Thursday hitting back at the BJP, stating that Upa Lokayukta Justice Veerappa's claims of "63 per cent corruption" were based on his report in November 2019, when BJP's B S Yediyurappa was the CM.
"But Ashoka, without understanding the Upa Lokayukta's statement properly, has ended up tying the BJP's own bells of sins onto our heads and has effectively shot himself in the foot," the CM had said, as he accused Ashoka of foolishness for trying to twist Veerappa's statement to target the current government.
Responding, Ashoka said, "it is one thing to be called foolish in politics, that can be forgiven."
"But in public life, especially in the Chief Minister's chair, one must never become shameless," Ashoka posted on 'X' on Friday addressing Siddaramaiah.
Noting that the CM himself had admitted on the floor of the Assembly that a Rs 87 crore scam took place in the Valmiki Development Corporation, he said that when a CM acknowledges such a massive irregularity inside the floor of the House, the natural expectation is immediate action and accountability.
"But instead of taking responsibility, you continue in office as if nothing has happened. What should the people of Karnataka call this, if not sheer shamelessness," he asked.
Pointing out that the CM's Economic Advisor and senior Congress MLA Basavaraja Rayareddy had publicly stated that under Congress rule, Karnataka has become No.1 in corruption, Ashoka said, "Yet, you still cling to the Chief Minister's chair without a moment of introspection. What should the people of Karnataka call this, if not sheer shamelessness."
Senior Congress MLA C R Patil had exposed the "money for House" racket in the Housing Department and even warned that the government would collapse if the details he has were made public, Ashoka said.
"Despite such serious allegations from within your own party (Congress), you neither initiated an inquiry nor acted against the concerned minister. What should the people of Karnataka call this, if not sheer shamelessness," Ashoka asked the CM.
Highlighting the "40 percent commission" allegation Congress made against the previous BJP government, the opposition leader said, the commission that the Siddaramaiah government appointed concluded that the accusation was baseless.
"After your own panel demolished your own claim, what moral right do you have to continue repeating that allegation. What should the people of Karnataka call this, if not sheer shamelessness," he asked.
For the last two and a half years, Karnataka has been 'drowning' in corruption, scandals, irregularities and allegations across departments. Ashoka said, "If I begin listing every case that emerged under your government, even 24 hours would not be enough."
"And the most tragic aspect of your administration is this: the unbearable pressure, corruption demands and administrative harassment under your government pushed several officers and contractors into extreme distress - including the suicide of Chandrasekharan which exposed the Valmiki Development Corporation scam - a sign of how deeply broken the system has become under your watch," he said.
Instead of fixing this hopeless environment, the government has tried to bury every complaint and silence every voice, he charged.
"Being foolish is forgivable, but being shameless in public life is definitely not."
"When your own ministers admit scams, when your own advisors certify Karnataka as No.1 in corruption, and when your own MLAs expose rackets inside your departments - clinging to power without accountability is not leadership. It is shamelessness in its purest form." PTI KSU
Earlier on Thursday Ashoka had demanded that the corruption case and allegations in the state against the Congress government be handed over to a CBI investigation, citing a reported statement by Upalokaykta Justice Veerappa alleging "63 per cent corruption", following which Siddaramaiah hit back at the BJP leader.
