Monday, April 24, 2017
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Blood pressure drug may help treat skin cancerPhoto source: Thinkstock

Blood pressure drug may help treat skin cancer

24 Apr 2017 | 5:19 PM

LOS ANGELES: A drug commonly used to treat high blood pressure may protect against the sun-induced cell damage that leads to skin cancer, a new study claims.

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Los Angeles

A drug commonly used to treat high blood pressure may protect against the sun-induced cell damage that leads to skin cancer, a new study claims.

Researchers from Western University of Health Sciences in the US found that the drug called carvedilol surprisingly showed some protective effects against skin cancer.

They then conducted experiments with cell cultures and mice to see if carvedilol could prevent skin cancer caused by ultraviolet-B (UVB), the portion of sunlight that tends to damage the skin's top epidermal layers and plays a key role in skin cancer development.

Researchers found that carvedilol exhibited a protective effect in cultured mouse skin cells exposed to UVB and in hairless mice given the drug after UVB exposure.

The experiments showed that carvedilol acted by protecting cells against the cancer-causing DNA damage and cell death produced by UVB.

Hairless mice exposed to UVB and given carvedilol showed decreases in both the severity and number of tumours that developed compared to those not given carvedilol.

The mouse studies also showed that carvedilol delayed skin tumour formation more than sunscreen.

Researchers also discovered that not all beta blockers show cancer preventive properties, indicating that the cancer-fighting beta blockers likely act on not yet identified molecules.

"We have preliminary data indicating that the cellular targets for carvedilol are not related to the beta-adrenergic receptors that are the commonly accepted targets for all beta blockers," Bradley T Andresen from Western University of Health Sciences.

"They likely target unexpected mechanisms involved in cancer development," Andresen said. — PTI

Men crack sexist jokes to reaffirm their masculinity

Men crack sexist jokes to reaffirm their masculinity

23 Apr 2017 | 6:08 PM

WASHINGTON: Cracking sexist and anti-gay jokes are a way for some men to reaffirm their shaky sense of self, especially when they feel their masculinity is being threatened, say scientists.

UK schools teaching digital generation 'netiquette'

UK schools teaching digital generation 'netiquette'

23 Apr 2017 | 8:31 PM

LONDON: Schools in the UK are teaching children "netiquette" to stop them from texting at mealtimes, announcing deaths on Facebook or dumping romantic partners via WhatsApp, according to a media report.

Indian scientists find new ways to detect 'naked singularity'

Indian scientists find new ways to detect 'naked singularity'

21 Apr 2017 | 9:18 PM

MUMBAI: In a significant find, a team of scientists from the Tata Institute of Fundamental Research (TIFR) here has found novel ways to detect a bare or naked "singularity" — the most extreme object in the universe.

Most habitable planets may lack dry land

Most habitable planets may lack dry land

21 Apr 2017 | 8:57 PM

LONDON: Most habitable planets may lack dry land and would be dominated by oceans spanning over 90 per cent of their surface area, scientists say.

Gen-next cards to replace ATM pins with fingerprints

Gen-next cards to replace ATM pins with fingerprints

20 Apr 2017 | 8:27 PM

WASHINGTON:Forgot your ATM pin? A next- generation biometric card that lets you authenticate your payments with your fingerprints could soon come to your aid.

New ultrasonic clothes dryer to halve drying time

New ultrasonic clothes dryer to halve drying time

20 Apr 2017 | 8:17 PM

WASHINGTON:Scientists have developed a new tumbler dryer that can dry clothes twice as fast, while consuming 70 per cent less energy than conventional dryers.

Soon, Facebook tech will let our brains type!

Soon, Facebook tech will let our brains type!

20 Apr 2017 | 8:09 PM

LOS ANGELES:Facebook is working on a new 'silent speech' technology that will allow people to type directly with their brains, drastically reducing the time it takes to convert our thoughts into written words.

Apple iPhone 8 may have fingerprint reader at back

Apple iPhone 8 may have fingerprint reader at back

20 Apr 2017 | 12:16 PM

A new diagram of iPhone 8 suggests that Apple may move the fingerprint reader to the back of the phone and the camera modules also appear to have changed.

First detailed global Internet atlas developed

First detailed global Internet atlas developed

19 Apr 2017 | 9:13 PM

WASHINGTON: Scientists have developed the first global Internet Atlas — including a detailed map of the internet's physical structure in India — an advance that could help guard the infrastucture from terrorism or extreme weather events.

Massive super-Jupiter exoplanet discovered

Massive super-Jupiter exoplanet discovered

19 Apr 2017 | 9:08 PM

TOKYO: Astronomers have found a new exoplanet about three times more massive than Jupiter, orbiting a star 21,000 light years away from Earth.

NASA orbiter spots strange secondary craters on Mars

NASA orbiter spots strange secondary craters on Mars

19 Apr 2017 | 8:41 PM

WASHINGTON: NASA's Mars Reconnaissance Orbiter (MRO) has captured a region of Mars sprayed with strange-shaped secondary craters.

Earliest tooth-fillings discovered in 13,000-year-old skeleton

Earliest tooth-fillings discovered in 13,000-year-old skeleton

19 Apr 2017 | 8:38 PM

LONDON: Scientists have discovered 13,000- year-old teeth with traces of a tar-like substance at an ice age site in Italy, which is the oldest known example of tooth filling.

Canadian river changes course in 4 days as glacier retreats

Canadian river changes course in 4 days as glacier retreats

19 Apr 2017 | 10:05 PM

OTTAWA: The retreat of one of Canada's largest glaciers has changed the flow of a northern river almost overnight in an extreme case of what researchers call climate change "river piracy”.

Glacier shape predicts risk of thinning

Glacier shape predicts risk of thinning

18 Apr 2017 | 11:18 PM

HOUSTON: A glacier's risk of thinning can be predicted by analysing its shape, according to a new study that could help predict how much the Greenland Ice Sheet will contribute to future sea-level rise during the next century.

New wearable sensor can analyse your sweat for disease

New wearable sensor can analyse your sweat for disease

18 Apr 2017 | 11:20 PM

WASHINGTON: US researchers have developed a wristband-type wearable sweat sensor that could help diagnose cystic fibrosis, diabetes and other diseases.

How building blocks of life formed decoded

How building blocks of life formed decoded

17 Apr 2017 | 5:32 PM

WASHINGTON: Scientists have uncovered a physical mechanism that may explain how the building blocks necessary for the origin of life on Earth formed.

Soon, tiny chips may replace animal testing

Soon, tiny chips may replace animal testing

17 Apr 2017 | 4:51 PM

WASHINGTON: Researchers have developed a new ‘organs-on-chips’ technology that could replace animals for testing new drugs or supplements.

Innovative water balls may help cut plastic waste

Innovative water balls may help cut plastic waste

16 Apr 2017 | 9:42 PM

LONDON: Small transparent spheres filled with natural or flavoured water could help provide a solution to London's plastic waste problem, according to the start-up company based in the British capital that manufactures them.

Our ancestors wiped out HIV-type virus 11 million years ago

Our ancestors wiped out HIV-type virus 11 million years ago

16 Apr 2017 | 5:19 PM

WASHINGTON: Our ancestors may have eliminated a primordial HIV type virus around 11 million years ago, according to a new study that examined fossil DNA to find out when ancient viruses were at their peak.

New camera may capture distant images without long lens

New camera may capture distant images without long lens

16 Apr 2017 | 3:56 PM

NEW YORK: Scientists, including one of Indian origin, have developed a unique camera that can capture detailed images of distant objects without using a long lens, an advance that could lead to telescopes that are less bulky.

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