Navigation Links
Stroke risk in elderly treated with antipsychotics is newly linked to specific drug actions
Date:3/11/2013

Philadelphia, PA, March 11, 2013 Antipsychotic administration in the elderly is associated with an increased risk for cerebrovascular accident, more commonly known as stroke; a new study published in Biological Psychiatry provides additional insight into this important relationship.

Antipsychotics are prescribed to elderly patients to treat symptoms such as agitation, psychosis, anxiety, insomnia, and depression. The increased risk of stroke associated with these medications was identified approximately a decade ago and has since been replicated by subsequent studies. Although the increase in stroke risk is small, some guidelines discourage the prescription of antipsychotics to elderly patients.

Antipsychotic drugs vary in their effects on the body and so it is likely that antipsychotics are not uniform in their effects on stroke risk. Thus, better understanding of the mechanisms through which antipsychotics increase stroke risk might guide the prescription of safer drugs for elderly patients.

In their study, Wu and colleagues focused on the wide range of brain mechanisms targeted by antipsychotic medications. All antipsychotics block the D2 subtype of receptor for the neurotransmitter dopamine. However, these drugs also act on a range of other receptor targets including the serotonin 5-HT2 receptor, the M1 receptor for the transmitter acetylcholine, and the alpha2 receptor for noradrenaline.

To conduct the study, the researchers matched information from a large national database of insurance claims to what is known about the receptor binding profiles of the antipsychotic drugs.

"We found that antipsychotics with a high binding affinity of alpha2 adrenergic and M1 muscarinic receptors were associated with a greater risk of stroke than the use of other types of antipsychotics," said Dr. Susan Shur-Fen Gau, Professor and Chair at National Taiwan University and corresponding author of the study.

They also found that this stroke risk was elevated in patients who were older and had dementia. Stroke risk was also related to duration and dosage of treatment, with patients who received either short duration of antipsychotic treatment (4 weeks or less) or higher daily doses of treatment showing an increased risk of stroke. This suggests that risk is highest in the initial weeks of antipsychotic treatment and for those with a higher average daily dose.

"Antipsychotics have a wide range of receptor profiles. The stroke risk profiles from this study suggest that it may be possible to use antipsychotics more safely in the elderly," commented Dr. John Krystal, Editor of Biological Psychiatry.

Additional research is necessary, but the authors agree. They recommend that clinicians start antipsychotics at low dosages and closely monitoring for side effects in the initial treatment, particularly for individuals with older age and the presence of dementia.


'/>"/>
Contact: Rhiannon Bugno
Biol.Psych@utsouthwestern.edu
214-648-0880
Elsevier
Source:Eurekalert

Related medicine news :

1. Obese New Mothers May Have Higher Heart Attack, Stroke Risk
2. Minocycline Enhances the Efficacy of Perispinal Enbrel in Traumatic Brain Injury Treatment as well as Stroke Treatment and Alzheimer’s Treatment
3. Walking Program Helps Stroke Survivors Get On With Life
4. Eye-Tracking Tool Might Quickly Spot Stroke
5. Discovery of executioner protein opens door to new options for stroke ALS, spinal cord injury
6. Blocked Heart Arteries May Be Key Risk Factor for Stroke
7. Artist Brushstrokes Celebrates 8th Year Online Serving the Arts, Crafts and Cosmetic Industries Globally
8. US Drug Watchdog Now Urges Any Woman Who had A Out Of The Blue Stroke Or Heart Attack After Using Birth Control Pills Call Yaz, Or Yasmin to Call the Johnson Law Group
9. High-Antioxidant Diet May Not Prevent Stroke, Dementia, Study Finds
10. Smoking cessation in old age: Less heart attacks and strokes within 5 years
11. Strokes associated with surgery can be devastating
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... ... announced that student team BioCellection won the $30,000 Perlman Grand Prize of the 2016 ... the Gloeckner Undergraduate Award, the Michelson People’s Choice Award, and the Committee Award ...
(Date:4/29/2016)... Toronto, ON (PRWEB) , ... April 29, 2016 ... ... GlutenFreeCoupons.ca and the Canadian Celiac Association (CCA), is pleased to announce the launch ... about gluten-free products, nutritional articles, recipes, and more. The purpose of the ...
(Date:4/29/2016)... NY (PRWEB) , ... April 29, 2016 , ... New York City based oral and ... This surgery is a very effective way to treat obstructive sleep apnea. Dr. Jamali is ... Orthognathic surgery is a procedure that involves one or both jaw bones. This surgery is ...
(Date:4/29/2016)... ... April 29, 2016 , ... Jvion, ... round of funding led by Eastside Partners, with participation from existing investor Martin ... customer base and accelerate its technology and product roadmap. , “Jvion ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... enterprise focused entirely on patients with cancer, today announced that Lynne Malestic, RN, ... the 2016 CURE® Extraordinary Healer® for Oncology Nursing , which honors nurses ...
Breaking Medicine News(10 mins):
(Date:4/27/2016)...   , ... le trimestre, soutenu par une croissance de +42% ... de +16% des ventes aux hôpitaux et cliniques  ... (Euronext : MKEA, FR0010609263 ; OTCQX : MKEAY), inventeur de Cellvizio®, ... chiffre d,affaires pour le premier trimestre clos au ...
(Date:4/27/2016)... , April 27, 2016   Zillion ... its digital health technology platform, which specializes in ... programs into scalable digital products, Zillion enables companies ... and empower consumers to take control of their ... live video conferencing – including one-to-one, group and ...
(Date:4/27/2016)... , April 27, 2016 ... addition of the  "Global Anesthesia Disposables Market ... http://photos.prnewswire.com/prnh/20160330/349511LOGO ) ,The global anesthesia ... a CAGR of 4.03% during the period ... a major threat to patients, safety. Organizations ...
Breaking Medicine Technology: