Thursday April 25, 2019

Sound Waves May Help Treat Dementia

Presently no curative treatments are available for vascular dementia or Alzheimer's disease which are the most common causes of dementia

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The researchers believe that this type of low intensity sound therapy may benefit humans. (IANS)

Low-intensity ultrasound waves may improve cognitive dysfunction in patients with dementia and/or Alzheimer’s disease, scientists suggest.

Applying low-intensity pulsed ultrasound (LIPUS) to the whole brain of the mice improved blood vessel formation and nerve cell regeneration without having obvious side effects.

The researchers believe that this type of therapy may also benefit humans.

“The LIPUS therapy is a non-invasive physiotherapy that could apply to high-risk elderly patients without the need for surgery or anaesthesia, and could be used repeatedly,” said lead author Hiroaki Shimokawa from Tohoku University in Japan.

The team treated mice with vascular dementia on three alternative days, followed by a surgical procedure that limited the brain’s blood supply.

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A woman suffering from Dementia. Pixabay

The mice with a condition simulating Alzheimer’s disease in humans received 11 LIPUS treatments over a period of three months.

The results, published in the journal Brain Stimulation, showed that cognitive impairment markedly improved in mice from both the groups when LIPUS was applied to the whole brain three times a day for 20 minutes each.

Also Read: Scientists Develop Potential Approach to Treat Dementia, Stroke

Further, genes related to the cells lining blood vessels were turned on. The team also found increased expression of an enzyme involved in blood vessel formation and a protein involved in nerve cell survival and growth.

Presently no curative treatments are available for vascular dementia or Alzheimer’s disease which are the most common causes of dementia. (IANS)

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Late Onset of Menstruation May Spike up Dementia Risk, Says Study

For the study, the researchers involved 6,137 women among which 42 per cent later developed dementia

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Representational Image- dementia, Pixabay

Women whose menstruation starts later and those who enter menopause early may have a greater risk of developing dementia, say researchers.

The findings showed that women who had their first menstrual cycle at age 16 or older had a 23 per cent greater risk of dementia than women who had their first menstrual cycle at age 13.

Women who went through natural menopause before age 47 had a 19 per cent greater risk of dementia than women who went through menopause at age 47 or older.

In addition, women who had hysterectomy — surgery to remove all or part of the uterus — had an eight per cent greater risk of dementia than those who did not, according to the study, published in the journal Neurology.

1 in 6 people over the age of 80 have dementia. Pixabay
1 in 6 people over the age of 80 have dementia. Pixabay

“Oestrogen levels can go up and down throughout a woman’s lifetime. Our results show that less exposure to oestrogen over the course of a lifetime is linked to an increased risk of dementia,” said Paola Gilsanz, Researcher at Kaiser Permanente – a US-based healthcare company.

For the study, the researchers involved 6,137 women among which 42 per cent later developed dementia.

Also Read- Food Insecurity In New York, Indian-Americans Work To Raise Awareness

“Since women are 50 per cent more likely to develop dementia over their lifetimes than men, it’s important to study any risk factors that are specific to women that could eventually lead us to potential points of intervention,” Gilsanz suggested. (IANS)