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.

Potential therapeutic target for multiple sclerosis

Oregon Health & Science University neuroscientists are eyeing a protein as a potential therapeutic target for multiple sclerosis because de-activating it protects nerve fibers from damage.

24 Apr 2007

Obese women 3.5 times more likely to require a Caesarean

Liverpool scientists have uncovered the reason why overweight women have more Caesarean sections; they are at significant risk of their uterus contracting poorly in childbirth.

19 Apr 2007

New combined imaging promises insights into multiple sclerosis

Researchers have developed a way to use three types of microscopic imaging techniques simultaneously to analyze living tissue and learn more about the molecular mechanisms of multiple sclerosis, information that could help lead to earlier detection and new treatments.

18 Apr 2007

Bioluminescence part of new imaging technique

CNRS scientists in collaboration have developed a new technique for the in vivo imaging of neuronal function using bioluminescence, based on a GFP-aequorin fusion protein.

18 Apr 2007

Better understanding of membrane fusion

Cells constantly swap cargo bound in vesicles, miniscule membrane-enclosed packages of proteins and other chemicals. Before the swap can take place, the vesicle membrane must fuse with another membrane, creating channels packages can pass through.

18 Apr 2007

Coronary artery risk development in young adults

Having above optimal levels of risk factors for heart disease between the ages of 18 and 30 can mean a two to three times greater risk of later developing coronary calcium, a strong predictor of heart disease, according to results of a new study from the National Heart, Lung, and Blood Institute (NHLBI) of the National Institutes of Health.

17 Apr 2007

Genzyme completes study on Sevelamer Carbonate in patients with chronic kidney disease

Genzyme has announced that a recently completed study of Renvela (sevelamer carbonate) achieved its primary endpoint, demonstrating a statistically significant reduction in serum phosphorus for hyperphosphatemic patients with chronic kidney disease who are not on dialysis.

17 Apr 2007

Laser technique to identify deadly anthrax

Texas A&M University and Princeton University physicists have joined forces to perfect a powerful new weapon in the war on terrorism – a laser technique to identify deadly anthrax spores.

15 Apr 2007

Cytokinetics initiates of phase II clinical trial for CK-1827452

Cytokinetics has announced the initiation of a Phase II clinical trials program evaluating CK-1827452, a novel cardiac myosin activator for the potential treatment of patients with either acutely decompensated or chronic heart failure.

15 Apr 2007

Calcium intake could be used as a prognostic factor for osteoporosis

Measuring a man's daily calcium intake is an effective way of identifying prostate cancer patients with a higher than average risk of osteoporosis, according to the April issue of the urology journal BJU International.

11 Apr 2007

Research shows relationship between low calcium intake and higher levels of osteoporosis in men with prostate cancer

Daily calcium intake is an effective way of identifying prostate cancer patients with a higher than average risk of osteoporosis, according to the April issue of the urology journal BJU International.

11 Apr 2007

Thyroid surgery can be done safely in an outpatient setting

Thyroid surgery, which has traditionally been an overnight hospital procedure, can be done safely in an outpatient setting, and in fact is preferable because it is less expensive, according to a new study published in the April issue of Otolaryngology-Head and Neck Surgery .

7 Apr 2007

Nicotine shown to enhance learning and memory

While nicotine is highly addictive, researchers have also shown the drug to enhance learning and memory, a property that has launched efforts to develop nicotine-like drugs to treat cognitive deficits in Alzheimer's and Parkinson's diseases, schizophrenia, and attention-deficit/hyperactivity disorder.

5 Apr 2007

Are multivitamins necessary?

Are multivitamins necessary? The April issue of Mayo Clinic Women's HealthSource answers this and other common questions about multivitamins.

5 Apr 2007

No apparent increase in coronary heart disease for women who initiate hormone therapy

Wyeth Pharmaceuticals, a division of Wyeth ( NYSE:WYE ) , provides comment on a re- analysis of pooled data from both hormone therapy arms of the Women's Health Initiative (WHI) Study published today in the Journal of the American Medical Association.

4 Apr 2007

Raman spectroscopy for faster body-fluid tests

University of Rochester researchers announce in the current issue of Applied Optics a technique that in 60 seconds or less measures multiple chemicals in body fluids, using a laser, white light, and a reflective tube.

4 Apr 2007

Trial of percutaneous coronary intervention added to optimal medical therapy in patients with stable coronary heart disease

Percutaneous coronary interventions (PCI) involve opening partially blocked arteries to improve blood flow to the heart. These procedures are performed more than 1 million times a year.

3 Apr 2007