Navigation Links
Cholesterol-lowering drug linked to sleep disruptions
Date:11/7/2007

ORLANDO, Nov. 7 A cholesterol-lowering drug appears to disrupt sleep patterns of some patients, researchers reported at the American Heart Associations Scientific Sessions 2007.

The findings are significant because sleep problems can affect quality of life and may have adverse health consequences, such as promoting weight gain and insulin resistance, said Beatrice Golomb, M.D., lead author of the study and an associate professor of medicine and family and preventive medicine at the University of California at San Diego School of Medicine.

In the largest study of its kind, researchers compared two types of cholesterol-lowering drugs called statins simvastatin, which is lipophilic (soluble in fats), and pravastatin, which is hydrophilic (soluble in water).

Because simvastatin is fat soluble it can more readily penetrate cell membranes and cross the blood brain barrier into the brain. The brain controls sleep, and many of the brains nerve cells are wrapped in a fatty insulating sheath called myelin.

The results showed that simvastain use was associated with significantly worse sleep quality. A significantly greater number of individuals taking simvastatin reported sleep problems than those taking either pravastain or the placebo, Golomb said. On average, the lipophilic statin had a greater adverse effect on sleep quality.

In past studies and case reports, some people on statins reported having insomnia or nightmares.

Several small studies were done early on, including those focused on lipophilic versus hydrophilic statins, Golomb said. Most (researchers) didnt see a difference in sleep, but they had short durations of follow-up and enrolled just a handful of people often fewer than 20, which was not enough to see a difference unless it was very large.

One of these studies did report a significant difference between pravastatin and simvastatin. But without more and bigger studies, an effect was not considered to be established.

In this study, researchers tested 1,016 healthy adult men and women for six months in a randomized, double-blind, placebo-controlled trial using simvastatin, given at 20 milligrams (mg), pravastatin at 40 mg, or a placebo. They assessed outcomes with the Leeds sleep scale, a visual analog scale of sleep quality, and a rating scale of sleep problems. Both scales were measured before and during treatment.

Those who reported developing much worse sleep on study medication also showed a significant adverse change in aggression scores compared to others, Golomb said We should also point out that although the average effect on sleep was detrimental on simvastatin, this does not mean that everyone on simvastatin will experience worse sleep.

Researchers did not include patients with heart disease or diabetes due to concerns about assigning these people to placebos.

Patients taking simvastatin who are having sleep problems should consult with their doctor, Golomb said. Sleep deprivation is a major problem in a minor number of people.


'/>"/>

Contact: Karen Astle
karen.astle@heart.org
214-706-1392
American Heart Association
Source:Eurekalert

Related medicine news :

1. Pot bellies linked to early signs of cardiovascular disease
2. Diet high in meat, fat and refined grains linked to risk for colon cancer recurrence, death
3. Immune deficiency linked to a type of eye cancer
4. Drop in breast cancer incidence linked to hormone use, not mammograms
5. Clinical depression linked to abnormal emotional brain circuits
6. Air pollution linked to cardiovascular risk indices in healthy young adults
7. High pollution linked to poor lung function growth in children in Mexico City
8. Early Weight Loss in Women Linked to Dementia
9. Vitamin Es lack of heart benefit linked to dosage
10. Sugary Sodas High in Diabetes-Linked Compound
11. RA Drugs Linked to Slight Skin Cancer Risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... June 27, 2016 , ... ... strategic partnership with Connance, a healthcare industry leader providing predictive analytics to ... technology combine to provide health systems, hospitals and ambulatory surgical centers with ...
(Date:6/27/2016)... ... 27, 2016 , ... TopConsumerReviews.com recently awarded their highest five-star rating to Best ... individuals in the United States and Canada wear eyeglasses. Once considered to be a ... and make a fashion statement. Even celebrities use glasses as a way of creating ...
(Date:6/26/2016)... Creek, Michigan (PRWEB) , ... June 26, 2016 , ... ... joined as sponsor of the 2016 Cereal Festival and World’s Longest Breakfast Table in ... in honor of the city’s history as home to some of the world’s leading ...
(Date:6/26/2016)... ... , ... PawPaws brand pet supplements owned by Whole Health Supply ... health of felines. The formula is all-natural and is made from Chinese herbs that ... Cat Kidney Support Supplement Soft Chews are Astragalus Root Extract and Rehmannia Root ...
(Date:6/26/2016)... Lake Orion, Clarkston, Michigan (PRWEB) , ... June ... ... direction with respect to fertility once they have been diagnosed with endometriosis. These ... tolerable intercourse but they also require a comprehensive approach that can help for ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016  Consumers have ... and regulators/payers have placed more emphasis on patient ... patient support programs in the pharmaceutical industry have ... medications. Consequently, pharmaceutical companies are focusing on becoming ... are providing products and services that improve health. ...
(Date:6/24/2016)... DUBLIN , June 24, 2016 ... addition of the "Structural Electronics 2015-2025: Applications, ... In-Mold Electronics, Smart ... Integrated Photovoltaics Structural electronics involves ... as load-bearing, protective structures, replacing dumb structures such ...
(Date:6/24/2016)... PUNE, India , June 24, 2016 ... "Pen Needles Market by Type (Standard Pen Needles, Safety ... 12mm), Therapy (Insulin, GLP-1, Growth Hormone), Mode of Purchase ... published by MarketsandMarkets, This report studies the market for ... is expected to reach USD 2.81 Billion by 2021 ...
Breaking Medicine Technology: