Tag: "deficiency" at biology news

Too much of a good thing

...genital defects like spina bifida, fetal vitamin A deficiency syndrome and caudal regression syndrome....

Hopkins Children's Center researchers find cause for common kind of dwarfism

... at least two children had isolated growth hormone deficiency (IGHD) type 1-B, the most common type of growth ho... doctors more easily diagnose the cause of hormone deficiency in children....

Can a vitamin a day help keep heart disease away?

...e there's evidence that high folic acid can mask a deficiency of vitamin B12, the U-M group and others have recommended that B12 be taken along with any folic acid supplements. Most multivitamins contain both nutrients, as do whole grains, oranges and green vegetables. The U-M study was funded in part by th...

University of Pittsburgh reports best gene delivery to date of protein missing in Duchenne Muscular Dystrophy

...ts into this AAV and which corrects the dystrophin deficiency in the DMD mouse model is a significant achievement. The mini-gene AAV and a new technology recently developed in Dr. Xiaos laboratory may also be applicable to other genetic disorders involving unusually large genes, according to the Pitt researcher...

Age and race are significant risk factors for vitamin D deficiency and disability among elderly women

Vitamin D deficiency is associated with bone loss and bone fractures, w...observational study on the prevalence of vitamin D deficiency in two groups of elderly women aged 65 to 95 years. One group (1002) was comprised of women with va...

Evidence links protein damage to Parkinson's

...s. Most commonly they become symptomatic due to a deficiency of a specific neurotransmitter -- in the case of Parkinson's it is dopamine. When the neurons that produce these chemicals die or become impaired, which occurs with oxidation, the eventual results are tremors and sometimes dementia. "Alpha-synucle...

October Geology and GSA Today highlights

...average global temperatures. The subsequent oxygen deficiency in the water column may have been responsible for the extinction of 30% to 50% of deep-sea benthic foraminiferal species. The late Paleocene global warming may also have led to the migration of mammalians from Eurasia to North America. By geochemical...

Scientists pinpoint mechanism for UV damage to rice plants

...rigin of that problem. Two possible sources of the deficiency were: 1) a regulatory mutation that decreases production of the repair enzyme, or 2) a structural mutation that leads to a functionally defective enzyme, but in normal amounts. In the current research, the two used a "photoflash" technique to sort it...

Obese do not process vitamin D from sunlight as well as lean individuals

Vitamin D deficiency is a common problem which, left untreated, can lea...dy fat in obese persons, giving rise to a relative deficiency which could be corrected with oral administration of extra vitamin D. The study was conducted during...

Adolescents raised on strict macrobiotic diet show vitamin B12 deficiency and impaired cognitive function

...ich may contain small amounts of fish. Severe B12 deficiency in infants and children has previously been shown ...th retardation. The earliest signs of vitamin B12 deficiency in infants include apathy and lethargy which is often accompanied by increasing irritability. B12 d...

Calcium absorption is not affected by a high protein diet

...sorption, thus aggravating the problems of calcium deficiency and osteoporosis. In research published in The American Journal of Clinical Nutrition, Dr. Robert Heaney studied the diets of a large group of nuns and concluded that protein and phosphorous intake have no role in the absorption of dietary calcium. ...

Aging alters sleep and hormone levels sooner than expected

...ery low levels of growth hormone. Growth hormone deficiency has been studied extensively in the elderly, where it is associated with increased obesity, loss of muscle mass and reduced exercise capacity. This study suggests that clinical trials of growth-hormone replacement therapy, which have previously bee...

Low dietary vitamin C can increase the risk for periodontal disease, especially in smokers

...lo, says the relationship between severe vitamin C deficiency and gum health has long been known. "In the late 18th century, sailors away at sea would eat limes to prevent their gums from bleeding," Genco said. "The relationship between vitamin C and periodontal disease is likely due to vitamin C's role in ma...

Physicians have seen a rise in the number of infants suffering from rickets

... in the number of infants diagnosed with vitamin D deficiency rickets, a disease once considered to be virtually...and bow legs, all common problems with a vitamin D deficiency if left untreated. "Rickets, can cause severe health problems including seizures from low calcium l...

Scientists discover key ingredient in sexual reproduction

...ing nitric oxide to the mix, men with nitric oxide deficiency might one day be able to use their own sperm in the process instead of relying on a sperm donor. Just say NO Often confused with nitrous oxide, or 'laughing gas', nitric oxide (NO) is a simpler compound consisting of a single atom of nitroge...

Monsanto adds support for 'golden rice'; opens its rice genome sequence data to worldwide research community

...nabling the development of solutions for vitamin A deficiency will lead to a wide variety of discoveries that enhance food security and nutrition throughout the developing world."...

Women with low body iron find exercise harder

...Division of Nutritional Sciences at Cornell. Iron deficiency that is not as severe as anemia is a common proble...earchers have reported recently that moderate iron deficiency also compromises memory and verbal learning in teen-agers. In a previous study, published in 1998, ...

Can heavy alcohol use lead to some kinds of cancer?

... the aldehyde dehydrogenase-2 (ALDH2) isoenzyme, a deficiency which allows acetaldehyde to accumulate in the blo...and lead author of the study. "Accordingly, ALDH2 deficiency is quantitatively the most important gene mutation potentially exposing humans to an increased risk ...

Alcohol and thiamine deficiency together: a dangerous combination?

...mine (Vitamin B1) deficiency. Alcohol and thiamine deficiency together may have a more damaging impact on the br...s know that chronic abuse of alcohol may lead to a deficiency in thiamine (also known as Vitamin B1). This deficiency can wreak particular havoc on the brain, ca...

Mice unable to synthesize vitamin C should become valuable research tool, scientists say

... the heart to thebody. "Marginal vitamin C deficiency affects the vascular integrity ofmice unable to synthesize ascorbic acid, with potentially profound effects ontheir susceptibility to vascular diseases," Maeda said. A current, controversial theory about important common illnesses affecting many peo...

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