Navigation Links
Hopkins researchers discover new link to schizophrenia

Neuroscientists at Johns Hopkins have discovered that mice lacking an enzyme that contributes to Alzheimer disease exhibit a number of schizophrenia-like behaviors. The finding raises the possibility that this enzyme may participate in the development of schizophrenia and related psychiatric disorders and therefore may provide a new target for developing therapies.

The BACE1 enzyme, for beta-site amyloid precursor protein cleaving enzyme, generates the amyloid proteins that lead to Alzheimers disease. The research team years ago suspected that removing BACE1 might prevent Alzheimer.

We knew at the time that in addition to amyloid precursor protein, BACE1 interacts with other proteins but we didnt know how those interactions might affect behavior, says Alena Savonenko, M.D., Ph.D., an assistant professor in neuropathology at Hopkins.

Reporting in the Proceedings of the National Academies of Sciences, the research team describes how mice lacking the BACE1 enzyme show deficits in social recognition among other behaviors classically linked to schizophrenia.

A normal mouse, when introduced to another mouse, shows a lot of interest the first time they meet. If the mice are separated then reintroduced, their interest drops because they remember having met before, a phenomenon the researchers call habituation. If they then introduce a completely different mouse, interest piques again at the newbie.

The researchers introduced mice lacking BACE1 to another mouse. The first time they met, the BACE1 mouse showed interest, the second time meeting the same mouse the BACE1 mouse showed less interest and even less interest the third time. The researchers then introduced the BACE1 mouse to a totally different mouse of a different strain and the BACE1 mouse showed no interest at all. These mice were totally disinterested, normal mice just dont behave like this, says Savonenko.

Additionally, the researchers found that these BACE1-lacking mice also displayed many other schizophrenia-like traits. Most importantly, according to Savonenko, some of the deficits improved after treatment with the antipsychotic drug clozapine.

Because schizophrenia is a disorder likely caused by many different factors, Savonenko explains that BACE1 might contribute to an increased risk of schizophrenia in certain patients and the BACE1 mice will be a useful animal model. We never thought we would see one mouse that closely mimics so many of the clinical features of schizophrenia, says Alena Savonenko, M.D., Ph.D., an assistant professor of neuropathology at Hopkins. This could be a really useful model to study and understand the molecular contributions to the disease.


Contact: Audrey Huang
Johns Hopkins Medical Institutions

Related medicine news :

1. TorreyPines Therapeutics Licenses Intellectual Property from Johns Hopkins Related to Novel Uses of Glutamate Receptor Antagonists for Prevention, Treatment of Stroke, Heart Attack
2. Johns Hopkins Medical School Sets Research and Teaching Collaboration with University of Patras in Greece
3. Resources Top 400,000 in Hopkins International Information Service
4. O.J. Brigance Named Honorary Chair of May 3 Race to Cure ALS, Confirms His Diagnosis by The Robert Packard Center for ALS Research at Johns Hopkins
5. Professional Products, Inc. Integrates Clinical Skills and Simulation Center at the Johns Hopkins Hospital
6. Johns Hopkins to participate in 1000 Genomes Project
7. Sixteen Organizations Implement ACG Rx-PM Predictive Modeling from Johns Hopkins University, DST Health Solutions
8. Urban kids with asthma need more frequent check-ups, Hopkins study suggests
9. Beckman Coulter Announces Licensing Option Agreements for Cancer Genes with Johns Hopkins University
10. What is a critical lab value? it depends, Hopkins researchers find
11. Survival of newborns with abdominal holes differs according to hospital, Hopkins research shows
Post Your Comments:
(Date:11/27/2015)... ... November 27, 2015 , ... Intellitec Solutions announced ... User Group (MSDSLUG). Recognized as Microsoft’s official group for end users of Dynamics ... software users, partners, industry experts and representatives. Intellitec Solutions’ membership status demonstrates their ...
(Date:11/27/2015)... ... 27, 2015 , ... The men and women on this ... in the country. They have overseen financial turnarounds, shown commitment to their community ... industry as a whole through their advocacy and professional efforts. , Becker's Hospital ...
(Date:11/26/2015)... ... November 26, 2015 , ... Inevitably when people think Thanksgiving, they also think ... during the Black Friday and Cyber Monday massage chair sales to receive ... high and low to find the best massage chair deals, they can see all ...
(Date:11/26/2015)... Antonio, TX (PRWEB) , ... November 26, 2015 , ... ... On November 19, 2015, our surgeons performed their 6,000th free flap breast reconstruction ... , “We wake up every day excited to rebuild lives and it’s an honor ...
(Date:11/25/2015)... ... November 25, 2015 , ... ... than those found on mammography, according to a study published online in the ... not seen on mammography may necessitate a change in treatment. , Breast MRI ...
Breaking Medicine News(10 mins):
(Date:11/25/2015)... THOUSAND OAKS, Calif. , Nov. 25, 2015 /PRNewswire/ ... of a Biologics License Application (BLA) with ... Administration (FDA) for ABP 501, a biosimilar candidate to ... the first adalimumab biosimilar application submitted to the FDA ... biosimilar pathway. Sean E. Harper , M.D., ...
(Date:11/25/2015)... AAIPharma Services Corp./Cambridge Major Laboratories, Inc. ... $15.8  Million to expand its laboratories and global ... The expansion will provide additional office space and ... of the pharmaceutical and biotechnology markets. ... up to 40,000 square feet of expanded development ...
(Date:11/25/2015)... Nov. 25, 2015  Henry Schein, Inc., the world,s ... office-based dental, medical and animal health practitioners, will unveil ... Henry Schein ConnectDental® Pavilion , which brings together ... open solutions designed to help any practice or laboratory ... for a schedule of experts appearing at the ...
Breaking Medicine Technology: