Calcium News and Research

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Calcium, the most abundant mineral in the body, is found in some foods, added to others, available as a dietary supplement, and present in some medicines (such as antacids). Calcium is required for muscle contraction, blood vessel expansion and contraction, secretion of hormones and enzymes, and transmitting impulses throughout the nervous system. The body strives to maintain constant concentrations of calcium in blood, muscle, and intercellular fluids, though less than <1% of total body calcium is needed to support these functions.

The remaining 99% of the body's calcium supply is stored in the bones and teeth where it supports their structure. Bone itself undergoes continuous remodeling, with constant resorption and deposition of calcium into new bone. The balance between bone resorption and deposition changes with age. Bone formation exceeds resorption in growing children, whereas in early and middle adulthood both processes are relatively equal. In aging adults, particularly among postmenopausal women, bone breakdown exceeds formation, resulting in bone loss that increases the risk of osteoporosis over time.

Ranbaxy receives FDA approval for first generic version of cholesterol-lowering drug Lipitor

The U.S. Food and Drug Administration today approved the first generic version of the cholesterol-lowering drug Lipitor.

30 Nov 2011

FDA clears Abbott's new ARCHITECT 25-OH Vitamin D assay

Abbott announced today it has received clearance from the U.S. Food and Drug Administration for a fully-automated 25-OH Vitamin D assay performed on its widely used ARCHITECT laboratory testing platform.

30 Nov 2011

Researchers create bone-like material and structure for orthopedic procedures

It looks like bone. It feels like bone. For the most part, it acts like bone. And it came off an inkjet printer. Washington State University researchers have used a 3D printer to create a bone-like material and structure that can be used in orthopedic procedures, dental work, and to deliver medicine for treating osteoporosis. Paired with actual bone, it acts as a scaffold for new bone to grow on and ultimately dissolves with no apparent ill effects.

30 Nov 2011

Rare syndrome's workings could help explain how brain wiring goes awry

Potential clues to how autism miswires the brain are emerging from a study of a rare, purely genetic form of the disorders that affects fewer than 20 people worldwide. Using cutting-edge "disease-in a-dish" technology, researchers funded by the National Institutes of Health have grown patients' skin cells into neurons to discover what goes wrong in the brain in Timothy Syndrome.

28 Nov 2011

Most people with Timothy syndrome mutation have autistic symptoms

Neuroscientists at Stanford University School of Medicine have homed in on potential differences in autistic people's brain cells by studying brainlike spheres grown in an elaborate process from skin cells.

28 Nov 2011

Scientists decode how Machado-Joseph disease arises

Neurodegenerative diseases represent one of the greatest challenges of our aging society. However, investigation into these diseases is made particularly difficult due to the limited availability of human brain tissue. Scientists from the Life & Brain Research Center and Neurology Clinic of Bonn University have now taken a roundabout path: They reprogrammed skin cells from patients with a hereditary movement disorder into so-called induced pluripotent stem cells (iPS cells) and obtained functional nerve cells from them.

24 Nov 2011

Dantrolene reduces severity of walking and balance problems linked with HD

Huntington's disease (HD) is characterized by ongoing destruction of specific neurons within the brain. It affects a person's ability to walk, talk, and think - leading to involuntary movement and loss of muscle co-ordination. New research published in BioMed Central's open access journal Molecular Neurodegeneration shows that the RyanR inhibitor Dantrolene is able to reduce the severity of walking and balance problems in a mouse model of HD.

24 Nov 2011

People eating out of home consume more calories and fat, less micronutrients

Eating out of home means you run a fair chance of ingesting more calories and fat, and less micronutrients like vitamin C, iron and calcium. And people nowadays eat more out of house, also in developing countries. So conclude scientists from the Antwerp Institute of Tropical Medicine, upon reviewing more than seven thousand studies. They report in the journal Obesity Reviews.

24 Nov 2011

BUSM professor receives 2011 ACN Communication Media Award

Michael F. Holick, PhD, MD, director of the General Clinical Research Unit and professor of medicine, physiology and biophysics at Boston University School of Medicine (BUSM) was selected by the American College of Nutrition (ACN) Awards Committee as the 2011 recipient of the ACN Communication Media Award.

23 Nov 2011

New device safe, more effective for patients with chronic neurological conditions

Functional electrical stimulation (FES) was developed to help return lost function to patients with upper and lower extremity injuries and spinal cord injuries, among other applications. However, the devices, which work by stimulating neuronal activity in nerve-damaged patients, have a potential shortcoming in that the electrical currents needed for the treatment to work can also send errant signals to surrounding nerves, resulting in painful side effects.

22 Nov 2011

UTHealth and Memorial Hermann HVI first in Houston to implant FDA approved artificial heart valve

Cardiologists and cardiovascular surgeons at The University of Texas Health Science Center at Houston and Memorial Hermann Heart & Vascular Institute are the first in Houston to implant the artificial heart valve recently approved by the Food and Drug Administration, as well as a newer, smaller version that is part of a clinical trial.

21 Nov 2011

Convergence commences CNV2197944 multiple ascending dose Phase I study for chronic pain

Convergence Pharmaceuticals Limited, the company focused on the development of novel and high value analgesic medicines, today announces that the multiple ascending dose Phase I study of the novel, first in class calcium channel blocker CNV2197944, for the treatment of chronic pain has been initiated.

21 Nov 2011

New, incision-free surgery to manage chronic acid reflux

Adam Vasser would wake up at night choking on partially digested food and liquid. Stomach acid burned the delicate tissue of his throat. "I'd sleep really badly," he said. During the day, he sometimes suffered from heartburn.

19 Nov 2011

New protein in the fruit fly eye may shed light on neurodegenerative diseases

Researchers at the University of Wisconsin-Madison and collaborators have discovered a powerful new protein in the eye of the fruit fly that may shed light on blinding diseases and other sensory problems in humans.

18 Nov 2011

Simple roundworm may serve as ideal skin wound healing lab model

The lowly and simple roundworm may be the ideal laboratory model to learn more about the complex processes involved in repairing wounds and could eventually allow scientists to improve the body's response to healing skin wounds, a serious problem in diabetics and the elderly.

18 Nov 2011

PCBs affect growth and bone density in turtles, an 'indicator species'

Manufactured until 1977, and banned by the Environmental Protection Agency in 1979, pentachlorobiphenyls (PCBs) are chemicals still commonly found in the environment because they break down slowly.

17 Nov 2011

Calcium scoring test may predict risk of heart disease

Coronary calcium in heart arteries provides important clues about risk, even among younger and elderly patients and those without traditional risk factors, according to new studies.

17 Nov 2011

Excessive vitamin D levels can lead to onset of AF

While previous studies have linked vitamin D deficiency to an increased risk for cardiovascular disease, new research at the Intermountain Medical Center Heart Institute shows that too much vitamin D can lead to the onset of a dangerous heart condition known as atrial fibrillation.

16 Nov 2011

Coronary calcium scoring can determine risk of cardiac events

If your doctor says you have a negative stress test, or that your cholesterol or blood pressure are normal, how assured can you be that you're not likely to have a heart attack in the next seven to 10 years?

16 Nov 2011

Atherosclerotic plaques spread downstream in coronary arteries

In human coronary arteries, atherosclerotic plaques tend to spread downstream because of the changes in blood flow patterns the plaque causes, researchers have found.

16 Nov 2011