Navigation Links
Insomnia after myocardial infarction
Date:12/1/2010

This release is available in French.

Montreal, December 1st, 2010 The heart and the brain appear to be even more closely connected than previously imagined. The damaging effects of myocardial infarction are apparently not confined to the heart, but also affect the brain. In fact, infarction seems to cause neuron loss at the level of the brainstem, which leads to insomnia, notably paradoxical insomnia. Sleep plays a crucial role in post-infarction remission, as demonstrated by the team of Roger Godbout, Ph.D., his colleague Guy Rousseau and their student Thierno Madjou Bah, investigators at the Research Center of the Hpital du Sacr-Cur de Montral, in a new study published today in the scientific journal SLEEP.

Although insomnia has long been observed following infarction, to date there have been no studies explaining the phenomenon in scientific terms, apart from the stress that is doubtless brought on by the heart attack. "Thanks to this study, we have been able to show that there is indeed a physiological explanation the death of cells that play a key role in sleep," says the researcher, who is also a full professor in the Department of Psychiatry at the Universit de Montral.

In the two weeks following a myocardial infarction, not only have periods of paradoxical sleep been observed to be less frequent and of shorter duration, but there are fewer cholinergic neurons in the brainstem, which control paradoxical sleep, due to the phenomenon of self-destruction of cells, known as apoptosis.

Treating insomnia to help the heart heal

A previous study also conducted by the team of Godbout and Rousseau demonstrated that myocardial infarction affected the limbic system, a region of the brain that is responsible for mood, which explains the depression frequently observed after heart attacks. "Since depression is frequently accompanied by insomnia, we wanted to verify whether the neurons in the brainstem were also affected," the investigator explained.

As demonstrated in this study, myocardial infarction, in addition to causing depression, is also associated with the release of factors that provoke the inflammation of tissues, including the brain, and specifically the regions that control sleep, notably the paradoxical sleep phase. The particular function of that phase is to activate regions in the brain that are responsible for integrating our emotions. If that is affected, the risk of depression also increases.

Poor-quality sleep is a known risk factor for cardiovascular disease. Since it can affect remission after an infarction, the risk of complications and recidivism rises and a vicious circle may be set in motion.

Godbout says this study illustrates the importance of rapid intervention in the days following the infarction, before the first signs of insomnia and depression are even apparent. He notes that "any preventive, pharmacological or behavioural treatment is certainly a pathway that should be considered."


'/>"/>

Contact: Vronique Allaire
veronique.allaire.hsc@ssss.gouv.qc.ca
514-338-2222 x2473
University of Montreal
Source:Eurekalert

Related medicine news :

1. Loud snoring and insomnia symptoms predict the development of the metabolic syndrome
2. Study finds an increased risk of death in men with insomnia and a short sleep duration
3. New study suggests tart cherry juice can be a natural solution for insomnia
4. Brain Balancing Gives Hope for Sufferers of Depression, Stress, and Insomnia at New Life Brain Center
5. Mammals Grew Big After Dinosaurs Died Off: Analysis
6. Kids ER Visits Down After Cold Medicine Withdrawal
7. Assessment tool predicts blood clot risk after plastic surgery
8. HIV Patients Do Well After Kidney Transplants: Study
9. Higher Plavix Dose Wont Boost Outcomes After Stent Placement: Study
10. Sponges, Surgical Tools Sometimes Left in Kids After Operation
11. Research uncovers extensive natural recovery after spinal cord injury
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/30/2016)... ... April 30, 2016 , ... A ... use of the HyProCure sinus tarsi implant. ( http://www.cbc.ca/news/canada/ottawa/banned-quebec-dentist-pierre-dupont-working-as-chiropodist-in-ottawa-1.3515494 ) The ... minimally invasive procedure performed, when indicated, to correct the partial displacement of ...
(Date:4/29/2016)... New York (PRWEB) , ... April 30, 2016 , ... ... Dobbs Ferry campus. The following programs will be expanding due to high demand: ... (HRM). The expansion will begin this summer. , School of Business ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... , announces the addition Onnit brand Alpha BRAIN and New Mood Daily-Stress Formula ... brain and mood optimization products to the store is just one more way ...
(Date:4/29/2016)... ... April 29, 2016 , ... Dr. Bernie Siegel, ... seller "LOVE, MEDICINE and MIRACLES") addresses touchy topics related to Death live on ... . Dr. Bernie Siegel, author of a plethora of essential books-to-read for ...
(Date:4/29/2016)... ... April 29, 2016 , ... A new ... with severe congenital diaphragmatic hernia have better survival rates if surgery is performed ... (CDH)—a condition where the diaphragm fails to form completely, letting abdominal organs into ...
Breaking Medicine News(10 mins):
(Date:4/28/2016)... 28, 2016  The blood testing market in ... to Kalorama Information and The Freedonia Group in a ... acid testing.  The healthcare research firm said that ... blood collection stations and in improving testing at the ... report, Blood Testing Market in China ...
(Date:4/28/2016)... April 28, 2016 Dr. Vivek ... and Ste phen Schmidt ... a leading provider of cloud-based software solutions for life sciences, today ... to bring a wealth of insight to a growing business.  This ... George Phillips joined ArisGlobal in the position ...
(Date:4/28/2016)... 2016  ValGenesis, Inc., the market leader ... today announced that a prominent world provider ... chronic kidney failure has selected ValGenesis Validation ... validation process. The global medical device manufacturer ... manage their validation processes electronically. Upon completion ...
Breaking Medicine Technology: