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.

Impaired mitochondrial function may play a major role in mood and psychotic disorders

Janssen Research & Development, LLC announced today the publication of an article that reviews the growing evidence that impaired mitochondrial function may play a major role in mood and psychotic disorders.

25 Apr 2012

PET/CT could help improve prediction of heart attack

An award-winning research project, funded by the British Heart Foundation (BHF), has tested a new imaging method which could help improve how doctors predict a patient's risk of having a heart attack.

25 Apr 2012

Study points to positive health benefits of fibers

For years, fiber intake among the global population has been extremely low, setting the stage for potentially serious, long-term public health implications. New research commissioned by Tate & Lyle and presented at the 2012 Experimental Biology conference in San Diego adds to the body of emerging research on fibers, including additional support for the role of soluble corn fiber in bone health.

24 Apr 2012

Study investigates how vitamin D affects skeleton when serum calcium levels are depleted

Vitamin D is renowned for its role in creating strong bones and is a key regulator of serum calcium levels. Calcium is primarily obtained through diet and absorbed through the intestine and into the blood stream. In addition to building bone, calcium is required for a variety of important physiological processes. Vitamin D, which is detected by receptors in bone and intestinal cells, regulates the level of calcium in the blood stream and determines how much should be stored in the skeleton.

24 Apr 2012

Researchers discover how dendritic cells exchange information to amplify immune response

Using a new fluorescent biosensor they developed, researchers at Carnegie Mellon University have discovered how a key set of immune cells exchange information during their coordinated assault on invading pathogens.

24 Apr 2012

Ethiopian immigrant women in Israel more likely to develop obesity

A new study at the Hebrew University of Jerusalem has found that Ethiopian women who immigrated to Israel gained significant amounts of weight, and some became obese, after integrating local foods into their diet and eating fewer traditional dishes.

24 Apr 2012

Frequent family meals can lead to decreased obesity

"Come and get it!" A phrase historically proclaiming that the communal meal is ready, is heard all too infrequently among contemporary American households, especially as children get older.

24 Apr 2012

SEBM announces 2012 winners of Young Investigator Award

The Society for Experimental Biology and Medicine is pleased to announce the 2012 winners of the Young Investigator Award. This is a $500 travel grant for undergraduate/ graduate students and/or individuals within 5 years of receiving doctoral degrees who are members of the Society to attend the Experimental Biology meeting in San Diego this month.

21 Apr 2012

Nanoscale films promote bone growth

Every year, more than a million Americans receive an artificial hip or knee prosthesis. Such implants are designed to last many years, but in about 17 percent of patients who receive a total joint replacement, the implant eventually loosens and has to be replaced early, which can cause dangerous complications for elderly patients.

20 Apr 2012

Merck wins New Jersey FOSAMAX litigation

Merck, known outside the United States and Canada as MSD, today said a state court jury in New Jersey found in its favor in the Sessner v. Merck case, rejecting the claims of a woman who blamed her jaw-related problems on her FOSAMAX use.

19 Apr 2012

Study explains why some people develop kidney stones and others do not

Kidney stones strike an estimated 1 million Americans each year, and those who have experienced the excruciating pain say it is among the worst known to man (or woman).

19 Apr 2012

Targeting glucagon's sweetening effect may treat type II diabetes

Maintaining the right level of sugar in the blood is the responsibility not only of insulin, which removes glucose, but also of a hormone called glucagon, which adds glucose.

16 Apr 2012

Johns Hopkins cardiologists support use of statins for primary prevention of heart attack

Writing the first commentary for a new feature in the Journal of the American Medical Association (JAMA), called Viewpoint, Johns Hopkins cardiologists make the case for why a 55-year-old man with a 10 percent estimated risk of heart attack over the next 10 years should be offered statin medication. They were invited to debate a professor who argues against prescribing statins for "primary" prevention—for those who have not had a cardiovascular event, such as a heart attack—even though they may be considered at "intermediate" risk because of elevated cholesterol or other factors.

12 Apr 2012

Amgen enters agreement to acquire KAI Pharmaceuticals

Amgen and KAI Pharmaceuticals today announced an agreement under which Amgen will acquire KAI, a privately held pharmaceutical company based in South San Francisco.

11 Apr 2012

Three ESRD products chosen for FDA's Innovation Pathway program

Three products for patients with end stage renal disease (ESRD) have been chosen to participate in the FDA's Innovation Pathway, an evolving system designed to help medical devices reach patients in a safe, timely and collaborative manner.

10 Apr 2012

Heart cells starved of nutrients less likely to be damaged during ischemia, reperfusion

Heart cells starved of nutrients are less likely to be damaged during periods of decreased blood flow and sudden influxes of blood, known as ischemia and reperfusion, and are also less likely to get out of synch with their cellular neighbors, the damaging phenomenon called arrhythmia.

9 Apr 2012

Researchers discover two molecules that control liver glucose production

In their extraordinary quest to decode human metabolism, researchers at the Salk Institute for Biological Studies have discovered a pair of molecules that regulates the liver's production of glucose---- the simple sugar that is the source of energy in human cells and the central player in diabetes.

9 Apr 2012

Doctors continue to prescribe dangerous nifedipine drug to elderly patients

Despite the fact that nifedipine increases the risk of heart attacks and death, doctors still prescribe this immediate-release blood pressure drug to elderly patients. The Cologne-based research group led by Ingrid Schubert has now published the results of their investigation in the current issue of Deutsches -rzteblatt International.

6 Apr 2012

Financial incentives for purchasing a healthier food option

The aging baby boomers and subsequent generations will be looking to the food industry to provide products that can help them live longer, healthier and more active lives than previous generations, according to research presented at the Institute of Food Technologists' Wellness 12 meeting.

5 Apr 2012

Detailed information on how metastasin protein facilitates spread of tumour cells

Researchers from the Department of Chemistry and Molecular Biology at the University of Gothenburg have managed for the first time to obtain detailed information about the role of the protein metastasin in the spread of tumour cells.

3 Apr 2012