Weakness in aging tied to leaky muscles
There is a reason exercise becomes more difficult with age. A report in the August Cell Metabolism, a Cell Press publication, ties the weakness of aging to leaky calcium channels inside muscle cells....
View ArticleHuman skin begins tanning in seconds, and here's how
We all know that human skin tans after days spent in the sun. That relatively slow process has known links to ultraviolet (and specifically UVB) exposure, which leads to tanning only after it damages...
View ArticleVitamin D may improve bone health in those taking anti-HIV drug
Vitamin D may help prevent hormonal changes that can lead to bone loss among those being treated for HIV with the drug tenofovir, according to the results of a National Institutes of Health network...
View ArticleStudy shows ultrasound triggers bone cell mobility
Research led by Yi-Xian Qin, PhD, Professor, Department of Biomedical Engineering, and Director of the Orthopaedic Bioengineering Research Laboratory at Stony Brook University, demonstrated that the...
View ArticleResearchers solve 20-year puzzle of how heart regulates its beat
(Medical Xpress)—A 20-year puzzle as to how the heart regulates contraction appears to have been solved by researchers from the University of Bristol. The findings, published in the journal Biophysics,...
View ArticleResearchers discover how heart arrhythmia occurs
Researchers have discovered the fundamental biology of calcium waves in relation to heart arrhythmias.
View ArticleUnderstanding heart failure at the cellular level
A team of researchers at the University of Florence in Italy and the University of Connecticut Health Center have used a multidisciplinary approach to provide an unprecedented glimpse of what happens...
View ArticleMechanism behind age-dependent diabetes discovered
Ageing of insulin-secreting cells is coupled to a progressive decline in signal transduction and insulin release, according to a recent study by researchers at Karolinska Institutet in Sweden. The...
View ArticleNerve cells borrow a trick from their synapses to dispose of garbage
Genetic defects affecting tiny channels in human nerve cells lead to several neurological diseases that result from aberrant nerve transmission, such as episodic ataxia, absence epilepsy, and...
View ArticleCalcium channels team up to activate excitable cells
Voltage-gated calcium channels open in unison, rather than independently, to allow calcium ions into and activate excitable cells such as neurons and muscle cells, researchers with UC Davis Health...
View ArticleScientists find sensor that makes synapses fast
Synapses, the connections between neurons, come in different flavors, depending on the chemical they use as transmitter. Signal transmitters, or neurotransmitters, are released at the synapse after...
View ArticleCellular calcium handling in diabetes
Tight regulation of calcium levels in the endoplasmic reticulum (ER) – a cellular organelle with multiple functions – contributes to insulin secretion by pancreatic beta cells. Although ER calcium...
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