Washington, Jan 4 : Toddlers who miss daytime naps may be losing more than sleep, an expert has warned.
A new study led by University of Colorado Boulder Assistant Professor Monique LeBourgeois found that toddlers between 2 and a half and 3 years old who miss only a single daily nap show more anxiety, less joy and interest and a poorer understanding of how to solve problems.
The results indicate insufficient sleep alters the facial expressions of toddlers - exciting events are responded to less positively and frustrating events are responded to more negatively, she said.
Washington, Jan 4 : Measuring the ratio of two enzymes in maternal plasma is an effective indicator for the early detection of fetal gender, a new study has suggested.
The new study describes findings that could lead to a non-invasive test that would let expecting mothers know the sex of their baby as early as the first trimester.
Researchers from South Korea discovered that various ratios of the enzymes DYS14 and GAPDH, which can be extracted from a pregnant mother's blood, indicate if the baby will be a boy or a girl.
Washington, Jan 3 : Schizophrenia may lead to progressive brain changes among adolescents, a new study has revealed.
It found that adolescents diagnosed with schizophrenia and other psychoses appear to show greater decreases in gray matter volume and increases in cerebrospinal fluid in the frontal lobe compared to healthy adolescents without a diagnosis of psychosis.
"Progressive loss of brain gray matter (GM) has been reported in childhood-onset schizophrenia; however, it is uncertain whether these changes are shared by pediatric patients with different psychoses," the researchers said.
Washington, Jan 3 : Changes seen in cerebrospinal fluid levels can help identify individuals at high risk for future Alzheimer disease (AD) at least five to 10 years before conversion to dementia," according to scientists.
They found that cerebrospinal fluid levels of Aß42 appear to be decreased at least five to 10 years before some patients with mild cognitive impairment develop AD dementia whereas other spinal fluid levels seem to be later markers of disease.
The researchers suggested that disease-modifying therapies, such as immunotherapy, are more likely to be successful if started in the early stages of the disease.
Washington, Jan 3 : A hormone found in body fat may contribute towards increased risk of dementia and Alzheimer's disease (AD) in women, a new study has suggested.
AD is the most common form of dementia. According to the authors, the data suggest an association between insulin resistance and inflammation, hallmarks for type 2 diabetes, and development of dementia.
"An additional potential factor that may contribute to the onset of AD and all-cause dementia is adiponectin," the authors said.
Washington, Jan 3 : Moms who develop diabetes during pregnancy and are from a poor social background are more likely to have kids with attention-deficit/hyperactivity disorder (ADHD), a new study has revealed.
To examine the association of gestational diabetes mellitus (GDM) and low socioeconomic status with neurodevelopment and ADHD outcomes, Yoko Nomura, M. D., Ph. D., of Queens College, City University of New York, Flushing, and colleagues, compared offspring of mothers with and without GDM in an economically diverse sample.
Washington, Jan 3 : An Indian origin scientist and his team have found that different ingredients in marijuana appear to affect regions of the brain differently during brain processing functions involving responses to certain visual stimuli and tasks.
Sagnik Bhattacharyya, M. B. B. S., M. D., Ph. D, at the Institute of Psychiatry, King's College in London, and colleagues studied 15 healthy men, who were occasional marijuana users, to examine the effects of
9-tetrahydrocannabinol (9-THC) and cannabidiol (CBD) on regional brain function during salience processing, which is how people perceive things around them.
Washington, Jan 3 : A new study has discovered how hepatitis C virus survives in the liver - helping medical scientists understand why a new antiviral drug appears to be effective against the virus.
Scientists at the University of North Carolina at Chapel Hill, working with colleagues from the University of Colorado, have found for the first time how the hepatitis C virus hijacked a small RNA molecule that regulates gene expression in human liver cells to ensure its own survival.
Washington, Jan 2 : Age, gender and where you live may determine glaucoma risk, a new study has revealed.
Exfoliation syndrome (ES) is an eye condition that is a leading cause of secondary open-angle glaucoma and increased risk of cataract as well as cataract surgery complications.
"Although many studies from around the world have reported on the burden of the disease, some aspects of the basic descriptive epidemiologic features, which may help shed light on the cause, are inconsistent," said Louis Pasquale, M. D., study co-author and director of Massachusetts Eye and Ear's Glaucoma Center of Excellence.
Washington, Jan 2 : Young diabetics struggling to get a good night's sleep have worse control of their blood sugar, perform poorly in school and behave badly, a new study has found.
According to Michelle Perfect and her colleagues, lighter sleep and breathing problems lead to trouble controlling blood sugar, despite adherence to diabetic health guidelines
"Despite adhering to recommendations for good diabetic health, many youth with Type 1 diabetes have difficulty maintaining control of their blood sugars," Perfect, principal investigator of the study, said.
Washington, Dec 30 : Scientists have laid the foundation of completely understanding the intricacies of distinct kidney cancer subtypes, which could lead to better treatments for the disease.
Van Andel Research Institute scientists conducted two studies. In one study led by Kyle Furge, Ph. D. and Aikseng Ooi, Ph. D., researchers provide a more complete understanding of the biology of Type 2 papillary renal cell carcinoma (PRCC2), an aggressive type of kidney cancer with no effective treatment, which lays the foundation for the development of effective treatment strategies.
Washington, Dec 31 : Beer drinkers are most likely to drive drunk and get involved in driving fatalities than wine or scotch drinkers, a new study has found.
In fact, the study found that states with higher wine consumption actually have fewer drunk driving deaths, Discovery News reported.
"Beer has the strongest link to traffic fatalities, then spirits, while wine has a negative impact on traffic fatalities," said Bradley Rickard, assistant professor of economics and applied management at Cornell University.
Washington, Dec 30 : The US has slammed Venezuelan President Hugo Chavez's comments in which he had said the former may be responsible for cancers affecting Latin American leaders.
US State Department spokeswoman Victoria Nuland said the comments were "horrific and reprehensible", and did not deserve a further response, The BBC reports.
Chavez had said it was "very strange" that he and other leftist leaders were suffering from cancer after Argentine President Cristina Fernandez de Kirchner was diagnosed with the disease.
Washington, Dec 30 : Scientists have discovered that mutations in the ATM gene may increase the hereditary risk for pancreatic cancer.
Pancreatic cancer is one of the most morbid cancers, with less than 5 percent of those diagnosed with the disease surviving to five years.
Approximately 10 percent of patients come from families with multiple cases of pancreatic cancer.
Washington, Dec 30 : Mindfulness-based meditation plays a vital role in improving breast cancer survivors' health challenges, which they face after treatments, a new study has revealed.
Yaowarat Matchim, a former nursing doctoral student; Jane Armer, professor of nursing and Bob Stewart, professor emeritus of education and adjunct faculty in nursing, found that breast cancer survivors' health improved after they learned Mindfulness-Based Stress Reduction (MBSR), a type of mindfulness training that incorporates meditation, yoga and physical awareness.
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