Navigation Links
Feinstein researchers develop new genetic method and identify novel genes for schizophrenia
Date:12/3/2007

GLEN OAKS, NY Scientists at the Zucker Hillside Hospital campus of the Feinstein Institute for Medical Research have identified nine genetic markers that can increase a persons risk for schizophrenia. In a study published this week in the Proceedings of the National Academy of Sciences, the research team uncovered original evidence that this disabling brain disease can be inherited in a recessive manner. A recessive trait is one that is inherited from both parents.

If a person inherits identical copies of these markers from each parent, his or her risk for schizophrenia increases substantially, said Todd Lencz, PhD, associate director of research at Zucker Hillside and the lead author of the study. If these results are confirmed, they could open up new avenues for research in schizophrenia and severe mental illness, said Anil Malhotra, MD, director of psychiatric research at Zucker Hillside and senior investigator of the study.

The scientists developed a complex mathematical approach called whole genome homozygosity association (WGHA) that provides a new way of analyzing genetic information. It enables scientists to simultaneously look at genetic information derived from the patients mother and father, and identify pieces of chromosomes that are identical. They tested genetic material from 178 patients and 144 controls.

It has been the prevailing view in psychiatric genetics that there are probably dozens, if not hundreds, of genetic variations that could lead to schizophrenia, but each gene has a small effect. It is the wrong mix of many genes, plus unknown environmental stressors, that trigger the onset of symptoms. One in every 100 people suffer from schizophrenia, a condition marked by episodes of hallucinations, delusions and disordered thinking.

The new findings suggest another scenario, at least for a subset of patients. Dr. Lencz and his colleagues identified nine regions along the chromosomes that might play a large role in triggering the disease when two identical variants are inherited. Four of these regions contain genes that have been previously associated with schizophrenia, providing validation for the technique. The remaining five regions provide an additional set of newly discovered genetic risk factors. Many genes located in these regions are involved with the structure and survival of neurons.

In genetic parlance, several of these markers demonstrated high penetrance, meaning that their effect on disease risk was large. In the study, 81 percent of the schizophrenia patients had at least one of these recessive markers, compared to only 45 percent of the normal control group. Nearly half of the patients had two or more compared to 11 percent of the controls. And while no one in the healthy group had identical chunks of chromosomes in four or more of these risk regions, subjects with more than three demonstrated a 24-fold increased risk of developing schizophrenia. This type of analysis could greatly improve our ability to diagnose schizophrenia and clarify specific subtypes of patients, Dr. Lencz said. The critical next step is confirming these results in independent datasets.

What is most exciting is that the study implicates new genes in schizophrenia, said David Goldman, MD, chief of laboratory of neurogenetics at the National Institute on Alcohol Abuse and Alcoholism. Now, they have to trace down the genes that mediate this vulnerability. Identifying these novel genes will eventually help improve understanding of the disease and lead to the development of more effective treatments, the scientists said.


'/>"/>

Contact: Jamie Talan
jtalan@nshs.edu
516-562-1232
North Shore-Long Island Jewish (LIJ) Health System
Source:Eurekalert

Related biology news :

1. Researchers identify proteins involved in new neurodegenerative syndrome
2. Texas researchers and educators head for Antarctica
3. MGH researchers describe new way to identify, evolve novel enzymes
4. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
5. U of MN researchers discover noninvasive diagnostic tool for brain diseases
6. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
7. Researchers discover new strategies for antibiotic resistance
8. Researchers find new taste in fruit flies: carbonated water
9. Binghamton University researchers investigate evolving malaria resistance
10. UIC researchers find promising new targets for antibiotics
11. Researchers develop simple method to create natural drug products
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... 5, 2017 Today HYPR Corp. , ... server component of the HYPR platform is officially ... end-to-end security architecture that empowers biometric authentication across Fortune ... already secured over 15 million users across the financial ... connected home product suites and physical access represent a ...
(Date:3/30/2017)... The research team of The Hong Kong Polytechnic University (PolyU) ... ground breaking 3D fingerprint minutiae recovery and matching technology, pushing contactless ... use in identification, crime investigation, immigration control, security of access and ... ... A research team led by Dr Ajay Kumar ...
(Date:3/24/2017)... MILAN , March 24, 2017 The Controller ... Deputy Controller Mr. Abdulla Algeen have received the prestigious international ... Continue Reading ... ... small picture) and Deputy Controller Abdulla Algeen (small picture on the right) ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... ... October 09, 2017 , ... ... of medical marijuana products targeting the needs of consumers who are incorporating medical ... takes place in Phoenix, Arizona. , As operators of two successful Valley dispensaries, ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... and applications consulting for microscopy and surface analysis, Nanoscience Instruments is now ... Analytical offers a broad range of contract analysis services for advanced applications. ...
(Date:10/7/2017)... Mass. , Oct. 6, 2017  The ... work of three scientists, Jacques Dubochet, Joachim ... breakthrough developments in cryo-electron microscopy (cryo-EM) ... technology within the structural biology community. The winners ... Scientists can now routinely produce highly resolved, three-dimensional ...
(Date:10/6/2017)... ... October 06, 2017 , ... On Tuesday, October ... on INSIGhT, the first-ever adaptive clinical trial for glioblastoma (GBM). The featured speaker ... is free and open to the public, but registration is required. , WHAT: ...
Breaking Biology Technology: