Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Disorder of Neuronal Circuits in Autism is Reversible

14.09.2012
People with autism suffer from a pervasive developmental disorder of the brain that becomes evident in early childhood.
Peter Scheiffele and Kaspar Vogt, Professors at the Biozentrum of the University of Basel, have identified a specific dysfunction in neuronal circuits that is caused by autism. In the respected journal „Science“, the scientists also report about their success in reversing these neuronal changes. These findings are an important step in drug development for the treatment for autism.

According to current estimates, about one percent of all children develop an autistic spectrum disorder. Individuals with autism may exhibit impaired social behavior, rigid patterns of behavior and limited speech development. Autism is a hereditary developmental disorder of the brain. A central risk factor for the development of autism are numerous mutations in over 300 genes that have been identified, including the gene neuroligin-3, which is involved in the formation of synapses, the contact junction between nerve cells.

Loss of neuroligin-3 interferes with neuronal signal transmission

The consequences of neuroligin-3 loss can be studied in animal models. Mice lacking the gene for neuroligin-3 develop behavioral patterns reflecting important aspects observed in autism. In collaboration with Roche the research groups from the Biozentrum at the University of Basel have now identified a defect in synaptic signal transmission that interferes with the function and plasticity of the neuronal circuits.

Synaptic networks in brains of rodent models of autism

Photo: Stephane Baudouin

These negative effects are associated with increased production of a specific neuronal glutamate receptor, which modulates the signal transmission between neurons. An excess of these receptors inhibits the adaptation of the synaptic signal transmission during the learning process, thus disrupting the development and function of the brain in the long term.

Of major importance is the finding that the impaired development of the neuronal circuit in the brain is reversible. When the scientists reactivated the production of neuroligin-3 in the mice, the nerve cells scaled down the production of the glutamate receptors to a normal level and the structural defects in the brain typical for autism disappeared. Hence, these glutamate receptors could be a suitable pharmacological target in order to stop the developmental disorder autism or even reverse it.

Vision for the future: Medication for autism

Autism currently cannot be cured. At present, only the symptoms of the disorder can be alleviated through behavioral therapy and other treatment. A new approach to its treatment, however, has been uncovered through the results of this study. In one of the European Union supported projects, EU-AIMS, the research groups from the Biozentrum are working in collaboration with Roche and other partners in industry on applying glutamate receptor antagonists for the treatment of autism and hope, that in the future, this disorder can be treated successfully in both children and adults.

Original article:

Baudouin S. J., Gaudias J., Gerharz S., Hatstatt L., Zhou K., Punnakkal P., Tanaka K. F., Spooren W., Hen R., De Zeeuw C.I., Vogt K., Scheiffele K. (2012) Shared Synaptic Pathophysiology in Syndromic and Non-syndromic Rodent Models of Autism. Science; Published online September 13, 2012 | DOI: 10.1126/science.1224159

Further information:

Prof. Peter Scheiffele, Biozentrum, Universität Basel, Neurobiology, Klingelbergstrasse 50/70, 4056 Basel, Email: peter.scheiffele@unibas.ch

Andrea Schürpf | Universität Basel
Further information:
http://www.unibas.ch
http://www.sciencemag.org/content/early/2012/09/12/science.1224159

More articles from Life Sciences:

nachricht The world's tiniest first responders
21.06.2018 | University of Southern California

nachricht A new toxin in Cholera bacteria discovered by scientists in Umeå
21.06.2018 | Schwedischer Forschungsrat - The Swedish Research Council

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Better model of water under extreme conditions could aid understanding of Earth's mantle

21.06.2018 | Earth Sciences

What are the effects of coral reef marine protected areas?

21.06.2018 | Life Sciences

The Janus head of the South Asian monsoon

21.06.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>