Long-lasting depot medication appears safe and effective for treatment of narcotic addiction
A study in the January issue of the journal Drug and Alcohol Dependence reports that a long-lasting depot medication appears safe and effective for treatment of narcotic addiction. In the study a single injection prevented withdrawal discomfort for 6 weeks in heroin-dependent patients, reduced the effects of injected opiates, and provided a comfortable detoxification as it gradually wore off.
The study medication was an experimental injectable sustained-release depot formulation of the medication buprenorphine. The injection is a suspension of biodegradable microcapsules each containing small amounts of the buprenorphine medication. As the microcapsules gradually disintegrate they provide a long-duration sustained release of buprenorphine. A tablet form of buprenorphine that is taken by holding it under the tongue is already used in the U.S. and around the world as an analgesic and as a treatment for opioid dependence; the tablet normally needs to be taken every day. The recent study was the first to test this new long-lasting depot formulation in humans. The study examined the safety and pharmacokinetics of the depot medication, and tested its effectiveness for reducing the opioid withdrawal syndrome and for reducing the effects of opioid challenge injections.
George E. Bigelow | EurekAlert!
Amazingly flexible: Learning to read in your thirties profoundly transforms the brain
26.05.2017 | Max-Planck-Institut für Kognitions- und Neurowissenschaften
Fixating on faces
26.01.2017 | California Institute of Technology
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
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22.09.2017 | Physics and Astronomy