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World Asia 09 May 2019 Doctors try brain im ...

Doctors try brain implants to save drug addicts

AFP
Published May 9, 2019, 4:14 am IST
Updated May 9, 2019, 4:14 am IST
Patient Number One insisted that only his surname, Yan, be published; he fears losing his job if he is identified.
The hope is that technology will extinguish his addiction, quite literally, with the flip of a switch.
 The hope is that technology will extinguish his addiction, quite literally, with the flip of a switch.

Shanghai: Patient Number One is a thin man, with a scabby face and bouncy knees. His head, shaved in preparation for surgery, is wrapped in a clean, white cloth.

Years of drug use cost him his wife, his money and his self-respect, before landing him in this drab yellow room at a Shanghai hospital, facing the surgeon who in 72 hours will drill two small holes in his skull and feed electrodes deep into his brain.

 

The hope is that technology will extinguish his addiction, quite literally, with the flip of a switch.

The treatment - deep brain stimulation (DBS) - has long been used for movement disorders like Parkinson's. Now, the first clinical trial of DBS for methamphetamine addiction is being conducted at Shanghai's Ruijin Hospital, along with parallel trials for opioid addicts. And this troubled man is the very first patient.

The surgery involves implanting a device that acts as a kind of pacemaker for the brain, electrically stimulating targeted areas. While Western attempts to push forward with human trials of DBS for addiction have foundered, China is emerging as a hub for this research.

Scientists in Europe have struggled to recruit patients for their DBS addiction studies, and complex ethical, social and scientific questions have made it hard to push forward with this kind of work in the United States, where the devices can cost $100,000 to implant.

China has a long, if troubled, history of brain surgery on drug addicts. Even today, China's punitive anti-drug laws can force addicts into years of compulsory treatment, including ‘rehabilitation’ through labor. It has a large patient population, government funding and ambitious medical device companies ready to pay for DBS research.

There are eight registered DBS clinical trials for drug addiction being conducted in the world, according to a U.S. National Institutes of Health database. Six are in China.

But the suffering wrought by the opioid epidemic may be changing the risk-reward calculus for doctors and regulators in the United States. Now, the experimental surgery Patient Number One is about to undergo is coming to America. In February, the U.S. Food and Drug Administration greenlighted a clinical trial in West Virginia of DBS for opioid addicts.

Patient Number One insisted that only his surname, Yan, be published; he fears losing his job if he is identified.

He said doctors told him the surgery wasn't risky. “But I still get nervous,” he said.

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