Mental Retardation News and Research

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Discovery of new gene responsible for puberty disorders

A new gene responsible for some puberty disorders has been identified by Medical College of Georgia researchers.

27 Oct 2008

New non-invasive prenatal blood test for Down's syndrome, safer for the fetus

American researchers have created a prenatal blood test which can be used to determine if an unborn baby has Down's syndrome and the new test is safer for the fetus.

7 Oct 2008

Neuroscientists discover a critical early step of memory formation

Researchers at the Johns Hopkins University School of Medicine report in the July issue of Neuron how nerve cells in the brain ensure that Arc, a protein critical for memory formation, is made instantly after nerve stimulation. Paradoxically, its manufacture involves two other proteins - including one linked to mental retardation - that typically prevent proteins from being made.

14 Sep 2008

Low levels of 'brain derived neurotrophic factor' may lead to obesity

A brain chemical that plays a role in long term memory also appears to be involved in regulating how much people eat and their likelihood of becoming obese, according to a National Institutes of Health study of a rare genetic condition.

28 Aug 2008

New model for studying the genetics of Angelman syndrome

A model for studying the genetics of Angelman syndrome, a neurological disorder that causes mental retardation and other symptoms in one out of 15,000 births, has been developed by biologists at The University of Texas at Austin.

14 Aug 2008

Anti-reflux surgery - research may lead to changes in treatment recommendations

Researchers at Wake Forest University Baptist Medical Center have found that the reflux and swallowing problems that are common symptoms in patients with Rett syndrome and other neurological impairments, may be caused by a different mechanism than they are in healthy individuals. The finding leaves researchers to wonder if these patients truly benefit from anti-reflux surgery commonly performed in these children.

4 Aug 2008

Increased risk for disabilities after preterm birth

Premature birth is associated with various life-long problems. Still, many premature children seem to function very well as adults according to a new large and comprehensive study from Norway.

18 Jul 2008

Out-of-pocket health care costs for disabled children vary widely by state

The size of the financial burden on families with disabled children largely depends on which state they live in, according to a new study conducted by the schools of social work at the University of North Carolina at Chapel Hill and Washington University in St. Louis, Mo.

14 Jul 2008

AARP finds U.S. seniors have limited access to home and community-based aervices under Medicaid

A new report by AARP's Public Policy Institute finds mixed results and promising signs among state government efforts to balance long-term care (LTC) options under Medicaid. Unfortunately, according to the report, only four states spent more than 50 percent of their Medicaid LTC dollars for older people providing home and community based services (HCBS). In Pennsylvania, 90% of Medicaid LTC dollars for older people and adults with physical disabilities who have limited financial resources are steered to nursing homes.

14 Jul 2008

Researchers discover that learning suffers if brain transcript isn't transported far out to end of neurons

Neuroscientists at Georgetown University Medical Center have solved a mystery that lies at the heart of human learning, and they say the solution may help explain some forms of mental retardation as well as provide clues to overall brain functioning.

10 Jul 2008

Japanese encephalitis damages the brain in two ways

Japanese encephalitis (JE), commonly known as brain fever, is one of the prevalent mosquito-borne encephalitis in India and entire South East (SE) Asia.

8 Jul 2008

Neglected infectious diseases go untreated, undiagnosed in hundreds of thousands of low-income residents in the U.S.

Hundreds of thousands of low-income U.S. residents in inner cities, the Mississippi Delta, Appalachia, areas near the Mexico border and tribal reservations remain undiagnosed and untreated for diseases that are prevalent in Africa, Asia and Latin America, according to an analysis published on Monday in PLoS Neglected Tropical Diseases, USA Today reports.

24 Jun 2008

Drug rapamycin reverses mental retardation caused by tuberous sclerosis complex

UCLA researchers discovered that an FDA-approved drug reverses the brain dysfunction inflicted by a genetic disease called tuberous sclerosis complex (TSC). Because half of TSC patients also suffer from autism, the findings offer new hope for addressing learning disorders due to autism. Nature Medicine publishes the findings in its online June 22 edition.

23 Jun 2008

Discovery of mechanisms that direct cholinergic synapse assembly between neurons in vivo

Rapid information processing in the nervous system requires synapses, specialized contact sites between nerve cells and their targets. One particular synapse type, cholinergic, uses the chemical transmitter acetylcholine to communicate between nerve cells. Cholinergic synapses are essential for normal learning and memory, arousal, attention, and all autonomic (involuntary) nervous system functions.

16 Jun 2008

Gene discovery could help answer basic questions of upright walking

What are the genes implicated in upright walking of humans? The discovery of four families in which some members only walk on all fours (quadrupedality) may help us understand how humans, unlike other primates, are able to walk for long periods on only two legs, a scientist will tell the annual conference of the European Society of Human Genetics tomorrow (Monday 2 June).

1 Jun 2008

Rett syndrome gene found to be full of surprises

A study funded by the National Institutes of Health (NIH) has transformed scientists' understanding of Rett syndrome, a genetic disorder that causes autistic behavior and other disabling symptoms. Until now, scientists thought that the gene behind Rett syndrome was an "off" switch, or repressor, for other genes. But the new study, published today in Science, shows that it is an "on" switch for a startlingly large number of genes.

29 May 2008

Discovery of gene mutation which causes epilepsy and mental retardation - but only in women

An Australian and British research team have discovered a gene mutation that causes epilepsy and mental retardation but only in women.

12 May 2008

Discovery of gene behind new form of intellectual disability

The Centre for Addiction and Mental Health (CAMH) has discovered a new form of intellectual disability involving mental retardation (MR) along with the eye defect retinitis pigmentosa (RP).

24 Apr 2008

Low levels of dietary folate linked to sperm abnormalities

Healthy men who report lower levels of the nutrient folate in their diets have higher rates of chromosomal abnormalities in their sperm, according to a new study by researchers at the University of California, Berkeley, and the Lawrence Berkeley National Laboratory.

20 Mar 2008

Hib meningitis eliminated in children under 5 in Uganda

Hib meningitis has been virtually eliminated in young children in Uganda just five years after the country introduced Haemophilus influenzae type b (Hib) vaccine nationwide, according to an independent study.

11 Mar 2008