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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01345877
Other study ID # H-1-2009-132
Secondary ID
Status Completed
Phase N/A
First received April 28, 2011
Last updated November 23, 2016
Start date February 2010
Est. completion date February 2011

Study information

Verified date November 2016
Source University of Copenhagen
Contact n/a
Is FDA regulated No
Health authority Denmark: Ministry of Science, Technology and InnovationDenmark: The Danish Medicines Agency
Study type Interventional

Clinical Trial Summary

Pain is a complex experience influenced by gender and genetics, and, by psychosocial and sensory experiences. Pain sensitivity is thus highly variable between individuals.

In the present study we evaluate individuals´ pain perception in response to a number of different pain stimuli in 100 healthy volunteers (50 females and 50 males).

The data will allow us to assess pain sensitivity, to predict pain responses and to investigate gender related differences in pain perception.

A second aim is to evaluate the robustness of the different pain-tests since the tests are repeated with an interval of 2-4 weeks.


Description:

Pain perception is affected by physiological, psychological, existential and demographic factors.

In the present study psychophysiological, psychological, genetic and demographic components in pain perception are evaluated in healthy volunteers (n = 100).

Psychophysical assessments following induction of a first degree burn injury (47.0 C, 420 s, 12.5 sq.cm, lower leg) include:

- pain during induction of burn injury

- thermal thresholds

- tactile thresholds

- electrical thresholds

- areas of secondary hyperalgesia

- pressure algometric assessments

- assessment of Diffuse Noxious Inhibitory Control (DNIC) efficiency

- assessment of (DNIC) using cold pressor test

Psychological assessments include:

- HADS (Hospital Anxiety and Depression Scale)

- PCS (Pain Catastrophizing Scale)

- vulnerability score

Genetics include:

- A118G SNP

Demographics include:

- gender

- height

- weight


Recruitment information / eligibility

Status Completed
Enrollment 100
Est. completion date February 2011
Est. primary completion date July 2010
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Both
Age group 20 Years to 40 Years
Eligibility Inclusion Criteria:

- healthy

- psychomotor ability to perform the tests

- cognitive ability to perform the tests

Exclusion Criteria:

- smoker

- Body Mass Index > 28

- participation in drug studies < 4 weeks prior to inclusion

- chronic pain

- chronic intake of analgesics

- drug or alcohol abuse

- intake of analgesics < 48 hours prior to study

- females not on contraceptive therapy (intra-uterine device or p-pill)

- lesion in the assessment area

Study Design

Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Basic Science


Related Conditions & MeSH terms


Intervention

Procedure:
first degree cutaneous burn injury
application of thermode (5 x 2.5 cm) to lower leg temperature 47.0 C, 420 s

Locations

Country Name City State
Denmark Multidisciplinary Pain Center 7612, Neuroscience Center, Rigshospitalet, Blegdamsvej 9 Copenhagen O

Sponsors (2)

Lead Sponsor Collaborator
University of Copenhagen Norpharma A/S

Country where clinical trial is conducted

Denmark, 

References & Publications (5)

Edwards RR, Fillingim RB, Ness TJ. Age-related differences in endogenous pain modulation: a comparison of diffuse noxious inhibitory controls in healthy older and younger adults. Pain. 2003 Jan;101(1-2):155-65. — View Citation

Luginbühl M, Schnider TW, Petersen-Felix S, Arendt-Nielsen L, Zbinden AM. Comparison of five experimental pain tests to measure analgesic effects of alfentanil. Anesthesiology. 2001 Jul;95(1):22-9. — View Citation

Neziri AY, Curatolo M, Nüesch E, Scaramozzino P, Andersen OK, Arendt-Nielsen L, Jüni P. Factor analysis of responses to thermal, electrical, and mechanical painful stimuli supports the importance of multi-modal pain assessment. Pain. 2011 May;152(5):1146-55. doi: 10.1016/j.pain.2011.01.047. — View Citation

Neziri AY, Scaramozzino P, Andersen OK, Dickenson AH, Arendt-Nielsen L, Curatolo M. Reference values of mechanical and thermal pain tests in a pain-free population. Eur J Pain. 2011 Apr;15(4):376-83. doi: 10.1016/j.ejpain.2010.08.011. — View Citation

Ravn P, Frederiksen R, Skovsen AP, Christrup LL, Werner MU. Prediction of pain sensitivity in healthy volunteers. J Pain Res. 2012;5:313-26. doi: 10.2147/JPR.S33925. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary pain following burn injury from baseline to 420 s after burn injury No
Secondary thermal thresholds followed for 180 min after burn injury No
Secondary tactile thresholds followed for 180 min after burn injury No
Secondary pressure algometry assessments 95 min prior to burn injury No
Secondary DNIC-efficiency 45 min before burn injury No
Secondary cold pressor test 85 min before burn injury No
Secondary HADS score 2 hours before the burn injury No
Secondary PCS ratings 2 hours before the burn injury No
Secondary A118G SNP 8 months after inclusion completed No