American Heart Association Questions Atkins Study Results

The American Heart Association has issued a statement on a recent study announcing positive results from an Atkins-like, low-carbohydrate diet. “Media reports about a small study funded by the Robert C. Atkins Foundation may have created the erroneous impression that the American Heart Association has revised its dietary guidelines. This is not the case. This study was released as one of over 3,600 abstracts presented at the American Heart Association’s annual Scientific Sessions, a forum for the presentation of research pertaining to heart disease and stroke for scientists and physicians. These scientific abstracts do not represent official positions or statements of the American Heart Association….

Terrorist attacks increased dangerous irregular heartbeats

The rate of life-threatening heart rhythms more than doubled among New York heart patients the month after the September 11, 2001 terrorist attacks, researchers have reported. The study evaluated patients with an implantable cardioverter-defibrillator (ICD). An ICD is an electrical generator the size of a pocket watch that is inserted into the heart to monitor heart rhythm. It detects life-threatening abnormal rhythms, called arrhythmias, and delivers an electrical shock to restore normal rhythm.

House Cleaning at Human Genome Project

The National Human Genome Research Institute said today it has made several key personnel changes, including the appointment of a new scientific director to run its intramural research program, a new director for the extramural program that oversaw the Human Genome Project and new advisors in the Office of the Director.

Israel’s Barak discusses biological threats in Middle East

Former Israeli Prime Minister Ehud Barak, a speaker at BioSecurity 2002, now underway in Las Vegas, discusses with Science Blog editor Ben Sullivan issues facing Israel and the Middle East in the biosecurity realm.

Beyond Iraq, to what extent do bioweapons represent a likely threat to Israel and other Middle East countries? Do you believe they are seen as a legitimate weapon by the powerplayers behind the intifada, for example, or does the region’s concentrated geography actually play against the likelihood of their use?

Iraq is clearly the major player of bio-weapon in the region. Syria might be interested in it as a part of its “Strategic Answer” vis a vis the per claimed nuclear capabilities of Israel, namely as a deterrence element. Palestinian terror might not be able to use it on major scale for the reasons you have mentioned…

Heart gone haywire blamed in some sudden infant deaths

An electrical problem in the heart may cause one out of 20 cases of sudden infant death syndrome (SIDS), researchers have reported.
The problem is similar to a heart condition called long Q-T syndrome that contributes to sudden death in young people and adults. In long Q-T syndrome, the heart electrically recharges itself too slowly or in a disorganized fashion in preparation for the next heartbeat. When combined with a trigger, such as intense emotion or physical exertion, a long Q-T heart can go out of control and cause cardiac arrest and sudden death.

Bone marrow cell transplant treats clogged leg arteries

Bone marrow cells implanted into blood-starved legs formed new blood vessels, increased blood flow and prevented amputation in people with peripheral artery disease, researchers have reported. “This is the first multicenter and double-blind clinical study to prove the clinical efficacy of growing new blood vessels using bone marrow cell transplantation,? says the study’s lead author Hiroya Masaki M.D., Ph.D. He hopes that transplanting bone marrow cells will establish a new therapy for peripheral artery disease (PAD).

Study Shows Pre-Menopausal Females Protected From Heart Injury

Despite recent reports that hormone therapy does not offer protection for post-menopausal females against heart disease and heart attack, researchers from Duke University Medical Center have determined in mouse studies that non-hormone treated pre-menopausal females are, in fact, better protected from cardiac damage following ischemia compared to their male counterparts. The findings suggest that research should continue toward finding better ways to treat post-menopausal women to maintain such cardiac protection, the researchers said.

Transplanted muscle cells can take root in damaged hearts

The first direct evidence that muscle cells transplanted from within a heart patient’s body could help heal their damaged heart muscle is being reported today. In the study, a small sample of cells from patients’ thigh muscles were taken, and “satellite” myoblast cells were isolated and grown in culture until they multiplied. These cells were then injected into the hearts of four patients who were receiving heart-assisting implants to help them survive until they could get a heart transplant. The results showed that the injected cells not only survived in their new environment, but began to form muscle fibers.

Hostility may be better predictor of heart disease than smoking, cholesterol

Hostility may predict heart disease more often than traditional coronary heart disease (CHD) risk factors like high cholesterol, cigarette smoking and weight, according to research reported on in the November issue of Health Psychology, published by the American Psychological Association (APA). Using a sample of 774 older White men (average age was 60) from the Normative Aging Study, lead researcher Raymond Niaura, Ph.D., and colleagues sought to determine whether hostility was an independent influence or a contributing factor in CHD development. Hostility levels, blood lipids, fasting insulin, blood pressure, body measurement index (BMI), weight-hip ratio (WHR), diet, alcohol intake, smoking and education attainment were assessed over a three year period beginning in 1986.

Gene Researchers Close In On Nicotine’s ‘Evil Cousin’

Nicotine isn’t all bad, despite its addictive qualities and its presence in tobacco products, increasingly taboo in these health-conscious times. As a chemical compound, nicotine even has beneficial properties. It’s used around the world as a relatively cheap, environmentally friendly insecticide, repelling bugs that attack tobacco and other plants, and – contrary to popular misconceptions – it is not a carcinogen. Take a nicotine molecule and snip off a methyl group, though, and you’ve got nicotine’s evil cousin: nornicotine.

Cell Transfer Restores Sperm Production in Infertile Mice

Scientists have successfully restored sperm production in once-infertile mice by transplanting specialized cells that are critical to sperm development. The research, reported on the Web site of the journal Biology of Reproduction, may give scientists a better understanding of how Sertoli cells ? which surround spermatogenic stem cells ? nourish sperm production and the survival of stem cells.

Assisted Reproduction May Be Linked to Birth Defect Syndrome

Scientists have discovered that in vitro fertilization (IVF) appears to be associated with a rare combination of birth defects characterized by excessive growth of various tissues. After studying data from a national registry of patients with Beckwith-Wiedemann Syndrome (BWS), the researchers found that IVF-initiated conception was six times more common than in the general population.