Researchers discover link between schizophrenia and diabetesMarch 31, 2009AUGUSTA, Ga. - People with schizophrenia are at increased risk for type 2 diabetes, Medical College of Georgia researchers have found. In a study of 50 people newly-diagnosed with schizophrenia or a related psychotic disorder with no other known risk factors, 16 percent had either diabetes or an abnormal rate of glucose metabolism, says Dr. Brian Kirkpatrick, vice chair of the MCG Department of Psychiatry and Health Behavior. In a similar size control group of people without schizophrenia, none had signs of or had developed the disease. People with diabetes cannot produce or properly use insulin, a hormone that converts glucose, starches and other food into energy. "These findings point toward there being some shared environmental factors or genetic factors between the development of schizophrenia and diabetes," he says. Dr. Kirkpatrick presented his findings at the International Congress on Schizophrenia Research in San Diego March 28-April 1. Researchers have long suspected that schizophrenia led to an increased risk of diabetes, Dr. Kirkpatrick says. To find out whether there was a link, he and colleagues at the University of Barcelona in Spain and the University of Maryland administered a two-hour oral glucose test to patients who had not yet been placed on anti-psychotic medication. Catching them before prescriptive treatment was important because researchers already knew that some of the most effective schizophrenia drugs also cause rapid weight gain - a risk factor for type 2 diabetes. "We know the medicine causes problems but we wanted to know whether the disease also causes them," he says. Schizophrenia symptoms include memory and attention problems, hallucinations, disorganized thinking and behavior and delusions. Psychotic symptoms typically start in late adolescence and early adulthood. But researchers believe that developmental abnormalities they don't yet know about also increase diabetes risk. One recent study - based on data from the Clinical Antipsychotic Trials of Intervention Effectiveness Schizophrenia Trial - showed the prevalence rate of metabolic syndrome, a group of risk factors that include abdominal obesity, high lipid and cholesterol blood levels and insulin resistance, is more than 50 percent in women and about 37 percent in men with schizophrenia. "Many people focus on the brain function part of the disease, but patients also have other medical problems that can't be attributed to other factors," Dr. Kirkpatrick says. "Bad things that happen in utero and at birth, such as prenatal famine and low birth weight, have both been shown to increase the risk of diabetes and schizophrenia. Problems in early development can leave a lasting impact." Establishing the link between the diseases may help scientists further understand the genetics of schizophrenia, he says. "And that may eventually enable some sort of intervention strategy." Medical College of Georgia |
|||||||||||||||||||||
| Related Schizophrenia Current Events and Schizophrenia News Articles Schizophrenia gene's role may be broader, more potent, than thought UCSF scientists studying nerve cells in fruit flies have uncovered a new function for a gene whose human equivalent may play a critical role in schizophrenia. Full recovery now possible for an 'untreatable' mental illness Patients coping with the chaos and misery of Borderline Personality Disorder now have reason for strong confidence in making major life changes through a new treatment, Schema Therapy. Immune system activated in schizophrenia Researchers at the Swedish medical university Karolinska Institutet have discovered that patients with recent-onset schizophrenia have higher levels of inflammatory substances in their brains. Their findings offer hope of being able to treat schizophrenia with drugs that affect the immune system. Why can't chimps speak? If humans are genetically related to chimps, why did our brains develop the innate ability for language and speech while theirs did not? Developmental delay could stem from nicotinic receptor deletion The loss of a gene through deletion of genetic material on chromosome 15 is associated with significant abnormalities in learning and behavior, said a consortium of researchers led by Baylor College of Medicine (www.bcm.edu) in a report that appears online today in the journal Nature Genetics. Fighting Sleep, Penn Researchers Reverse the Cognitive Impairment Caused By Sleep Deprivation A research collaboration led by biologists and neuroscientists at the University of Pennsylvania has found a molecular pathway in the brain that is the cause of cognitive impairment due to sleep deprivation. Testicular tumors may explain why some diseases are more common in children of older fathers A rare form of testicular tumour has provided scientists with new insights into how genetic changes (mutations) arise in our children. CSHL-led team discovers rare mutation dramatically increasing schizophrenia risk An international team of researchers led by geneticist Jonathan Sebat, Ph.D., of Cold Spring Harbor Laboratory (CSHL), has identified a mutation on human chromosome 16 that substantially increases risk for schizophrenia. Faulty 'wiring' in the brain triggers onset of schizophrenia A new study by researchers at the Institute of Psychiatry (IoP), King's College London has discovered abnormalities in the white matter of the brain that seem to be critical for the timing of schizophrenia. General anesthetics lead to learning disabilities in animal models Studies by researchers at Wake Forest University School of Medicine have shown that blocking the NMDA receptor in immature rats leads to profound, rapid brain injury and disruption of auditory function as the animals mature. More Schizophrenia Current Events and Schizophrenia News Articles |
|||||||||||||||||||||
|
|||||||||||||||||||||
|
|||||||||||||||||||||