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New regulatory mechanism discovered in cell system for eliminating unneeded proteins

Researchers at St. Jude Children's Research Hospital have discovered a new mechanism for eliminating unneeded proteins in cells, which could lead to new treatments for rare blood vessel disorders. The study reveals how a protein called Glomulin disrupts the ubiquitin system, marking potentially thousands of proteins for destruction.

SourceSt. Jude Children's Research Hospital·JournalMolecular Cell·DateAug 10, 2012

BUSM/VA Boston Healthcare System investigators identify new gene linked to PTSD

Scientists have identified a new gene, RORA, linked to post-traumatic stress disorder (PTSD), suggesting that it may play a role in the development of the condition. The study found a significant association between variations in the RORA gene and PTSD, highlighting a potential new avenue for research on how the brain responds to trauma.

SourceBoston University School of Medicine·JournalMolecular Psychiatry·DateAug 7, 2012

Study explains functional links between autism and genes

A pioneering study finds genetic changes that explain why one person has an autism spectrum disorder (ASD) and another does not. The research identifies potential new regions where copy-number variants are associated with ASDs and shows a significant impact of these variants on gene expression.

SourceCell Press·JournalAmerican Journal of Human Genetics·DateJun 21, 2012

Hormones, Elvis, and human emotion

Researchers studied people with and without Williams syndrome to gauge emotional response through hormone release. The study found that oxytocin levels increased in response to music, particularly Elvis songs, suggesting a link between the hormone and emotional experience.

SourceUniversity of Utah Health·JournalPLOS ONE·DateJun 12, 2012

Discovery of a gene that causes Joubert Syndrome

Researchers identified C5ORF42 as the gene causing Joubert Syndrome in French Canadian families in the Lower St. Lawrence region of Quebec. The study, published in The American Journal of Human Genetics, provides a genetic basis for the syndrome and allows family members to assess their children's genetic risks with a simple DNA test.

SourceUniversity of Montreal·JournalAmerican Journal of Human Genetics·DateMay 10, 2012

Columbia University Medical Center and NewYork-Presbyterian Hospital experts at American Academy of Neurology meeting

Researchers at Columbia University Medical Center presented studies on the impact of large-vessel acute ischemic stroke on cerebral blood vessels and found that dynamic cerebral autoregulation is impaired after the event, but normalizes by week two. Additionally, they discovered increased regional expression of Lingo-1 in the essential...

University of Toronto biologists predict extinction for organisms with poor quality genes

Biologists at the University of Toronto found that individuals with low-quality genes can produce offspring with even more inferior chromosomes, possibly leading to extinction. The study suggests that this could result in a 'mutational meltdown' that devastates endangered populations and increases health problems.

SourceUniversity of Toronto·JournalProceedings of the National Academy of Sciences·DateApr 16, 2012

Diet may treat some gene mutations

Scientists have developed a new technique to determine which patients with homocystinuria are most likely to respond to vitamin B6 treatment based on their genotypes. The study correlates specific gene mutations with disease severity and may help physicians prescribe treatment based on genotype.

SourceGenetics Society of America·JournalGenetics·DateApr 9, 2012

Collaboration rapidly connects fly gene discovery to human disease

A study discovered mutations in the mitochondrial methionyl-tRNA synthetase gene that cause neurodegenerative disorders in both fruit flies and humans. The findings suggest that antioxidants may counteract the negative consequences of these mutations in flies, raising hope for potential therapeutic approaches in human patients.

SourcePLOS·JournalPLOS Biology·DateMar 20, 2012

Autism affects motor skills, study indicates

A study published in Autism found that 83% of children with autism spectrum disorder were below average in motor skills, while their siblings scored in the normal range. The researchers suggest that genes play a role in these impairments, potentially explaining the association between motor coordination and social responsiveness.

SourceWashU Medicine·JournalAutism·DateFeb 15, 2012

Rare kidney disease shows how salt, potassium levels are moderated

A rare kidney disease study reveals how sodium and potassium levels are moderated in the body, shedding light on hypertension and familial high blood pressure disease. Researchers identified novel mutations linked to increased sodium activity and decreased potassium activity, providing a better understanding of this inherited condition.

JCI online early table of contents: Jan. 9, 2012

A team of researchers identified genetic mutations in OATP1B1 and OATP1B3 as the cause of Rotor syndrome, a rare genetic disorder characterized by jaundice. Complete deficiency of these proteins causes human Rotor syndrome by interrupting conjugated bilirubin reuptake into the liver.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateJan 9, 2012

Genetic and mechanistic basis for rotor syndrome uncovered

Researchers identified genetic mutations in OATP1B1 and OATP1B3 proteins as the underlying cause of Rotor syndrome, a condition characterized by conjugated bilirubin buildup. Complete deficiency of these proteins can cause hypersensitivity to certain drugs and interrupt conjugated bilirubin reuptake into the liver.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateJan 9, 2012

Key genetic error found in family of blood cancers

Researchers have identified a critical genetic mutation in patients with myelodysplastic syndromes, which can progress to leukemia. The mutation is found in nearly 9% of patients, increasing the risk of developing acute leukemia by almost three times. The study raises hopes for improved diagnosis and treatment of this blood cancer.

SourceWashU Medicine·JournalNature Genetics·DateDec 15, 2011

Exercise provides clue to deadly ataxia

Researchers discovered that brief periods of exercise in early life increased survival rates in mice with spinocerebellar ataxia 1 (SCA1), a devastating inherited disorder. Exercise reduced levels of capicua, a protein partner of ataxin1, which improved symptoms and extended lifespan.

SourceBaylor College of Medicine·JournalScience·DateNov 3, 2011