Clinical trial NCT01097902: Study of Experimental Models of Pain and Inflammation.
Official title: Experimental Inflammatory and Micro-incisional Pain Model Analysis by Gene Expression and Interstitial Fluid Proteomics of Skin Tissue
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
Conditions: Pain
Inflammation
Lead sponsor: Stanford University
Sponsor class: OTHER
First posted: 2010-04-02
Enrollment: 15
Sex: ALL
Minimum age (years): 18
Maximum age (years): 60
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: BASIC_SCIENCE

Brief summary: The experimental pain model studied in this proposal show characteristics of an inflamed wound with a pro-inflammatory response. This study will help discover candidate genetic and/or proteomic pain biomarkers that could provide objective and mechanism based tests to diagnose, monitor or quantify pain. We also hope to determine the measurable effects of a known non-steroidal anti-inflammatory drug (NSAID) on biomarkers of pain and inflammation.


Eligibility criteria: Inclusion Criteria:1) Age 18-60 2) Skin type II or III according to classification of Fitzpatrick 3) Negative pregnancy test (women of childbearing potential) 4) Willing and able to sign an informed consent form and Health Insurance Portability and Accountability Act (HIPAA) authorization and to comply with study procedures

Exclusion Criteria:1) History of acute or chronic illness that may hinder study procedures or confuse interpretation of the data (e.g. dermatological, neurological, psychiatric or addictive diseases) 2) Clinically significant cardiovascular, pulmonary, hepatic or renal diseases 3) Major bodily injury within 3 months of study participation 4) Surgery within 3 months of study participation 5) Pregnancy or breast-feeding 6) Intake of prescription drugs with anti/pro-inflammatory action 7) Intake of prescription drugs with anti/pro-analgesic action 8) Inability to abstain from any anti/pro inflammatory drugs during the 24-hour period preceding a study session 9) Inability to abstain from any anti/pro-analgesic drugs during the 24-hour period preceding a study session 10) Prior medical history that would contraindicate the use of NSAID, or previous negative reaction to NSAIDs or aspirin 11) Inability to obtain at least 6 hours of sleep during the night preceding a study session

Primary outcomes:
measure: Mechanical and thermal pain measurements, inflammatory COX and Prostaglandin E2 (PGE2) gene expression.
timeFrame: 48 hours
Secondary outcomes:
measure: Interleukin-1beta and Interleukin-8 regulation
timeFrame: 48 hours
Other outcomes:
Locations:
city: Stanford
country: United States
facility: Stanford University School of Medicine
state: California
Study officials:
affiliation: Stanford University
name: Martin S Angst
role: PRINCIPAL_INVESTIGATOR
References:
citation: Angst MS, Clark JD, Carvalho B, Tingle M, Schmelz M, Yeomans DC. Cytokine profile in human skin in response to experimental inflammation, noxious stimulation, and administration of a COX-inhibitor: a microdialysis study. Pain. 2008 Sep 30;139(1):15-27. doi: 10.1016/j.pain.2008.02.028. Epub 2008 Apr 8.
citation: Angst MS, Tingle M, Schmelz M, Carvalho B, Yeomans DC. Human in-vivo bioassay for the tissue-specific measurement of nociceptive and inflammatory mediators. J Vis Exp. 2008 Dec 1;(22):1074. doi: 10.3791/1074.