Gold-based drugs could hold the key to treating superbugs, researchers have found.
Scientists in Spain have identified 19 compounds that are effective against at least one antibiotic-resistant bacterium — and some of the drugs work against several strains.
Antibiotics are used to treat bacterial infections but, each time someone takes them, the chance of developing resistant bacterial strains known as superbugs rises.
Sometimes that happens because of antibiotic overuse, which happens when they are prescribed, but not necessary, for example for flu, which is caused by a virus.
But experts say superbugs can also develop when patients stop an antibiotic course midway through treatment, causing only the weakest cells to die as the stronger, more resistant bacteria multiply and mutate.
Drug-resistant infections kill about 700,000 people a year globally — a figure projected to rise to 10 million by 2050 if no action is taken.
And the development of new antibiotics has stalled, making antibiotic resistance one of the greatest public health threats facing humanity.
But gold metalloantibiotics — compounds with a gold ion at their core — offer a promising new approach due to their antibacterial properties.
To find out more, Dr Sara M. Soto Gonzalez, of the Barcelona Institute for Global Health, Barcelona, Spain, and colleagues studied the activity of 19 gold complexes against a range of multidrug-resistant bacteria isolated from patients.
She said: “All of the gold compounds were effective against at least one of the bacterial species studied and some displayed potent activity against several multidrug-resistant bacteria.
“It is particularly exciting to see that some of the gold complexes were effective against MRSA and multidrug-resistant A. baumannii, as there are two biggest causes of hospital-acquired infections.”
The research, which is being presented at this year’s European Congress of Clinical Microbiology and Infectious Diseases (ECCMID) in Copenhagen, focused on six bacteria, which lead to conditions such as pneumonia, blood and urinary tract infections.
All of the strains studied were multidrug-resistant. Four of them — S. aureus, P. aeruginosa, A. baumannii and E. coli are on the World Health Organisation’s list of antibiotic-resistant ‘priority pathogens’.
Another strain, multidrug-resistant S. maltophilia is increasingly being found in the lungs of people with cystic fibrosis.
In tests, 16 out of 19, or 84 per cent, of the gold complexes were highly effective against MRSA and S. epidermis.
Another 16 of the complexes were effective against the other bacteria, all of which are “gram negative”, which means they have a greater inbuilt resistance to antibiotics and the need for new treatments is particularly pressing.
Gold complexes use a variety of techniques to kill bacteria, including by stopping enzymes from working, disrupting the function of the bacterial membrane and damaging the bacteria’s DNA. This process should prevent antimicrobial resistance from developing, said the scientists.
Dr Gonzalez said: “The type of gold complexes we studied, known as gold (III) complexes, are relatively straightforward and inexpensive to make. They can also be easily modified and so provide a vast amount of scope for drug development.
“With research on other types of gold metalloantibiotics also providing promising results, the future is bright for gold-based antibiotics.”
The five pillars of Islam
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Name: Hassan Mohsen Elhais
Position: legal consultant with Al Rowaad Advocates and Legal Consultants.
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The specs: 2018 Dodge Durango SRT
Price, base / as tested: Dh259,000
Engine: 6.4-litre V8
Power: 475hp @ 6,000rpm
Torque: 640Nm @ 4,300rpm
Transmission: Eight-speed automatic
Fuel consumption, combined: 7.7L / 100km
Benefits of first-time home buyers' scheme
- Priority access to new homes from participating developers
- Discounts on sales price of off-plan units
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- Mortgages with better interest rates, faster approval times and reduced fees
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UAE v Gibraltar
What: International friendly
When: 7pm kick off
Where: Rugby Park, Dubai Sports City
Admission: Free
Online: The match will be broadcast live on Dubai Exiles’ Facebook page
UAE squad: Lucas Waddington (Dubai Exiles), Gio Fourie (Exiles), Craig Nutt (Abu Dhabi Harlequins), Phil Brady (Harlequins), Daniel Perry (Dubai Hurricanes), Esekaia Dranibota (Harlequins), Matt Mills (Exiles), Jaen Botes (Exiles), Kristian Stinson (Exiles), Murray Reason (Abu Dhabi Saracens), Dave Knight (Hurricanes), Ross Samson (Jebel Ali Dragons), DuRandt Gerber (Exiles), Saki Naisau (Dragons), Andrew Powell (Hurricanes), Emosi Vacanau (Harlequins), Niko Volavola (Dragons), Matt Richards (Dragons), Luke Stevenson (Harlequins), Josh Ives (Dubai Sports City Eagles), Sean Stevens (Saracens), Thinus Steyn (Exiles)
Other acts on the Jazz Garden bill
Sharrie Williams
The American singer is hugely respected in blues circles due to her passionate vocals and songwriting. Born and raised in Michigan, Williams began recording and touring as a teenage gospel singer. Her career took off with the blues band The Wiseguys. Such was the acclaim of their live shows that they toured throughout Europe and in Africa. As a solo artist, Williams has also collaborated with the likes of the late Dizzy Gillespie, Van Morrison and Mavis Staples.
Lin Rountree
An accomplished smooth jazz artist who blends his chilled approach with R‘n’B. Trained at the Duke Ellington School of the Arts in Washington, DC, Rountree formed his own band in 2004. He has also recorded with the likes of Kem, Dwele and Conya Doss. He comes to Dubai on the back of his new single Pass The Groove, from his forthcoming 2018 album Stronger Still, which may follow his five previous solo albums in cracking the top 10 of the US jazz charts.
Anita Williams
Dubai-based singer Anita Williams will open the night with a set of covers and swing, jazz and blues standards that made her an in-demand singer across the emirate. The Irish singer has been performing in Dubai since 2008 at venues such as MusicHall and Voda Bar. Her Jazz Garden appearance is career highlight as she will use the event to perform the original song Big Blue Eyes, the single from her debut solo album, due for release soon.
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4,872 matches
1,942 teams
116 pitches
76 nations
26 UAE teams
15 Lebanese teams
2 Kuwaiti teams
Killing of Qassem Suleimani
SQUADS
Pakistan: Sarfraz Ahmed (capt), Azhar Ali, Shan Masood, Sami Aslam, Babar Azam, Asad Shafiq, Haris Sohail, Usman Salahuddin, Yasir Shah, Mohammad Asghar, Bilal Asif, Mir Hamza, Mohammad Amir, Hasan Ali, Mohammad Abbas, Wahab Riaz
Sri Lanka: Dinesh Chandimal (capt), Lahiru Thirimanne (vice-capt), Dimuth Karunaratne, Kaushal Silva, Kusal Mendis, Sadeera Samarawickrama, Roshen Silva, Niroshan Dickwella, Rangana Herath, Lakshan Sandakan, Dilruwan Perera, Suranga Lakmal, Nuwan Pradeep, Vishwa Fernando, Lahiru Gamage
Umpires: Ian Gould (ENG) and Nigel Llong (ENG)
TV umpire: Richard Kettleborough (ENG)
ICC match referee: Andy Pycroft (ZIM)
Killing of Qassem Suleimani
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Creator: Mike White
Starring: Walton Goggins, Jason Isaacs, Natasha Rothwell
Rating: 4.5/5
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Starring: Brad Pitt, Damson Idris, Kerry Condon, Javier Bardem
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Pots for the Asian Qualifiers
Pot 1: Iran, Japan, South Korea, Australia, Qatar, United Arab Emirates, Saudi Arabia, China
Pot 2: Iraq, Uzbekistan, Syria, Oman, Lebanon, Kyrgyz Republic, Vietnam, Jordan
Pot 3: Palestine, India, Bahrain, Thailand, Tajikistan, North Korea, Chinese Taipei, Philippines
Pot 4: Turkmenistan, Myanmar, Hong Kong, Yemen, Afghanistan, Maldives, Kuwait, Malaysia
Pot 5: Indonesia, Singapore, Nepal, Cambodia, Bangladesh, Mongolia, Guam, Macau/Sri Lanka
MATCH INFO
Everton v Tottenham, Sunday, 8.30pm (UAE)
Match is live on BeIN Sports
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What is a black hole?
1. Black holes are objects whose gravity is so strong not even light can escape their pull
2. They can be created when massive stars collapse under their own weight
3. Large black holes can also be formed when smaller ones collide and merge
4. The biggest black holes lurk at the centre of many galaxies, including our own
5. Astronomers believe that when the universe was very young, black holes affected how galaxies formed
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