Impact of Daylight on Patients With Acute Myocardial Infarction

Myocardial Infarction Clinical Trial

Official title:

Impact of Daylight on Period 2 Protein and Glycolytic Enzymes in Human Buccal Mucosa and Blood Samples

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT02490397
• Other study ID #: 13-1607
• Status: Terminated
• Phase: N/A
• Start date: July 2015
• Est. completion date: December 28, 2020

Study information

• Verified date: June 2021
• Source: University of Colorado, Denver
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The study tests if intense light could be a potential therapy in humans after myocardial infarction by inducing Per2.

Description:

Damage to the heart caused by a myocardial infarction (heart attack) occurs most often during the early morning hours (6AM). Thus, the involvement of the circadian system (circa= approximately day) has been suggested. The circadian system in humans or animals is based on the rotation of the earth with day and night phases. When humans (or animals) wake up light shines in their eyes and the body receives a signal that the day starts. For the human body it means that certain proteins (named clock, period etc) are produced. The protein that determines the length of a day (awake and sleep period) is called Period 2 (Per2). Recent data indicated that the Per2 protein in hearts from mice is induced after daylight exposure (daylight with an intensity comparable to a bright day at the beach was used, approx. 10 000 LUX). This more Per2 was able to protect the heart from being damaged by no blood going to the heart (protection from a heart attack). This protection was based on a more efficient use of sugars (carbohydrates). Thereby the heart needs less oxygen. Current data indicate that human Per2 is also induced by light exposure and can be detected in human plasma samples.

In this study Per2 transcript and protein levels will be analyzed in patients that just experienced a heart attack with and without intense light (daylight) therapy utilizing blood samples (erythrocytes and leukocytes).

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 6
• Est. completion date: December 28, 2020
• Est. primary completion date: December 28, 2020
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 90 Years

Eligibility

Inclusion Criteria:

• Patients with an acute myocardial infarction

• Healthy volunteers

• Must speak and understand English

Exclusion Criteria:

• Patients with an acute myocardial infarction but are too sick, e.g. severe symptoms, chest pain, generally unstable, etc.

Related Conditions & MeSH terms

• Arteriosclerosis
• Coronary Arteriosclerosis
• Coronary Artery Disease
• Infarction
• Myocardial Infarction
• Myocardial Ischemia

Intervention

Other:
• Day Light
Patients are exposed to day light for 2 weeks after a heart attack. At the end of 2 weeks they will have blood drawn.
• Room Light
Patients will be exposed to only room or natural light for 2 weeks after heart attack. At the end of 2 weeks they will have blood drawn.

Locations

Country	Name	City	State
United States	University of Colorado Denver | Anschutz Medical Campus	Denver	Colorado

Sponsors (1)

Lead Sponsor	Collaborator
University of Colorado, Denver

Country where clinical trial is conducted

United States, 

References & Publications (3)

Brainard J, Gobel M, Bartels K, Scott B, Koeppen M, Eckle T. Circadian rhythms in anesthesia and critical care medicine: potential importance of circadian disruptions. Semin Cardiothorac Vasc Anesth. 2015 Mar;19(1):49-60. doi: 10.1177/1089253214553066. Epub 2014 Oct 7. Review. — View Citation

Brainard J, Gobel M, Scott B, Koeppen M, Eckle T. Health implications of disrupted circadian rhythms and the potential for daylight as therapy. Anesthesiology. 2015 May;122(5):1170-5. doi: 10.1097/ALN.0000000000000596. Review. — View Citation

Eckle T, Hartmann K, Bonney S, Reithel S, Mittelbronn M, Walker LA, Lowes BD, Han J, Borchers CH, Buttrick PM, Kominsky DJ, Colgan SP, Eltzschig HK. Adora2b-elicited Per2 stabilization promotes a HIF-dependent metabolic switch crucial for myocardial adaptation to ischemia. Nat Med. 2012 Apr 15;18(5):774-82. doi: 10.1038/nm.2728. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change of Period 2 (Per2) protein levels	Measure of Per2 protein levels related to daylight exposure vs. room light exposure after 2 weeks.	2 weeks

External Links

•   Research Lab