Featured Research

from universities, journals, and other organizations

Mind-body Connection In Placebo Surgery Trial Studied By University Of Denver Researcher

Date:
April 8, 2004
Source:
University Of Denver
Summary:
Patients with Parkinson's disease who thought they had received a transplant of human neurons into their brains--but who really hadn't--reported an improved quality of life one year later.

Patients with Parkinson's disease who thought they had received a transplant of human neurons into their brains--but who really hadn't--reported an improved quality of life one year later.

Related Articles


In the April issue of the Archives of General Psychiatry, research reported by Dr. Cynthia McRae of the University of Denver's College of Education provides strong evidence for a significant mind-body connection among patients who participated in a double-blind Parkinson's surgical trial.

Forty persons from the United States and Canada participated to determine the effectiveness of transplantation of human embryonic dopamine neurons into the brains of persons with advanced Parkinson's disease. Twenty patients received the transplant while 20 more were randomly assigned to a sham surgery condition.

Dr. McRae reports that the "placebo effect" was strong among the 30 patients who participated in the quality of life portion of the study.

"Those who thought they received the transplant at 12 months reported better quality of life than those who thought they received the sham surgery, regardless of which surgery they actually received," says Dr. McRae. More importantly, objective ratings of neurological functioning by medical personnel showed a similar effect. In the Archives report, Dr. McRae writes "medical staff, who did not know which treatment each patient received, also reported more differences and changes at 12 months based on patients' perceived treatment than on actual treatment."

One patient, for example, reported that she had not been physically active for several years before surgery, but in the year following surgery she resumed hiking and ice skating. When the double blind was lifted, she was surprised to find that she had received the sham surgery.

Although patient perceptions influenced their test scores, when the total sample of patients was grouped by the actual operation they received, patients who had the actual transplant surgery showed improvement in movement while, on average, patients who had sham surgery did not.

Professor Dan Russell of the Institute for Social and Behavioral Research at Iowa State, the study's co-author, says the findings have both scientific and practical implications.

"This study is extremely important in regard to the placebo effect because we know of no placebo studies that have effectively maintained the double-blind for at least 12 months. The average length of placebo studies is eight weeks," according to Russell. Dr. McRae notes that similar results related to the placebo effect have been found in other studies with patients with Parkinson's disease. She says that there is a need for placebo controls in studies evaluating treatment for Parkinson's as the placebo effect seems to be very strong in this disease. Dr. McRae also reports that although the sham surgery research design is somewhat controversial and has raised some ethical concerns, the results of this study show "the importance of a double-blind design to distinguish the actual and perceived values of a treatment intervention."

The surgical trials were done at the University of Colorado Health Sciences Center by Drs. Robert Breeze and Curt Freed with neurological evaluations at Columbia University Medical Center in New York by Dr. Stanley Fahn and Dr. Paul Greene.

###

The University of Denver (http://www.du.edu), the oldest private university in the Rocky Mountain Region, enrolls approximately 9,500 students in its undergraduate, graduate and professional programs. The Carnegie Foundation classifies the University of Denver as a Doctoral/Research University-Extensive.

Total undergraduate enrollment for Fall 2003 was 4,481, including 1,028 first-year, traditional undergraduate students. Graduate enrollment was 5,024. Overall, 105 nations are represented in the student body, and non-U.S. citizens comprise almost seven percent of the student population.


Story Source:

The above story is based on materials provided by University Of Denver. Note: Materials may be edited for content and length.


Cite This Page:

University Of Denver. "Mind-body Connection In Placebo Surgery Trial Studied By University Of Denver Researcher." ScienceDaily. ScienceDaily, 8 April 2004. <www.sciencedaily.com/releases/2004/04/040408084240.htm>.
University Of Denver. (2004, April 8). Mind-body Connection In Placebo Surgery Trial Studied By University Of Denver Researcher. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2004/04/040408084240.htm
University Of Denver. "Mind-body Connection In Placebo Surgery Trial Studied By University Of Denver Researcher." ScienceDaily. www.sciencedaily.com/releases/2004/04/040408084240.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com
From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Newsy (Nov. 25, 2014) Need another reason to eat yogurt every day? Researchers now say it could reduce a person's risk of developing type 2 diabetes. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins