Serum correlates of the placebo effect in irritable bowel syndrome.

Kokkotou, E., Conboy, L.A., Ziogas, D.C., Quilty, M.T., Kelley, J.M., Davis, R.B., Lembo, A.J., Kaptchuk, T.J.
Journal   Neurogastroenterol Motil.
Species  
Analytes Measured   MMP-9 , Osteoprotegerin , TIMP-1 , TWEAK , Flt-1 VEGFR1
Matrix Tested   Serum
Year   2010
Volume   22
Page Numbers   285-e81
Application   Cytokines and Chemokines
Abstract
BACKGROUND In diseases defined primarily by the subjective nature of patient self-report, placebo effects can overwhelm the capacity of randomized controlled trials to detect medication-placebo differences. Moreover, it is unclear whether such placebo effects represent genuine psychobiological phenomena or just shifts in selective attention. Knowledge of predictors of the placebo response could improve the design of clinical trials and the delivery of personalized medical care.

METHODS In patients with irritable bowel syndrome (IBS), a subset of our previous study that were randomized to placebo treatment (sham acupuncture) or no-treatment group (waitlist), we tested an enriched panel of 10 serum biomarkers at the enrolment and the 3rd week of intervention, using a multiplex electrochemiluminescent immunoassay.

KEY RESULTS More pronounced changes overtime in serum levels of osteoprotegerin (OPG) have been found in patients who received placebo treatment compared with the waitlist group (P = 0.039). Moreover, serum levels of OPG at baseline were found to be higher (P = 0.0167) in patients who subsequently achieved adequate relief (AR) of their IBS symptoms, independently of their treatment group. Besides, serum levels of TNF-related weak inducer of apoptosis (TWEAK) at baseline were also higher (P = 0.0144) in patients who reported AR and in particular in those who received the placebo treatment.

CONCLUSIONS & INFERENCES These two measurable biological parameters associated with placebo, namely serum OPG and TWEAK, provide a proof of principle for discovering putative molecular signatures of placebo response in IBS and perhaps in other illnesses with patient self-reported outcomes.

View Publications

Related Products

R-PLEX Rat TIMP-1 Antibody Set
TIMP-1 | Rat
Angiogenesis Control Pack 1
FGF (basic), PlGF, Tie-2, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1
V-PLEX Human Biomarker 54-Plex Kit
CRP, Eotaxin, Eotaxin-3, FGF (basic), GM-CSF, ICAM-1, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17B, IL-17C, IL-17D, IL-21, IL-22, IL-23, IL-27, IL-31, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, MIP-3α, PlGF, SAA, TARC, Tie-2, TNF-α, TNF-β, TSLP, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
V-PLEX Plus Human Biomarker 54-Plex Kit
CRP, Eotaxin, Eotaxin-3, FGF (basic), GM-CSF, ICAM-1, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17B, IL-17C, IL-17D, IL-21, IL-22, IL-23, IL-27, IL-31, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, MIP-3α, PlGF, SAA, TARC, Tie-2, TNF-α, TNF-β, TSLP, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
R-PLEX Human OPG Antibody Set
Osteoprotegerin | Human
R-PLEX Human TIMP-1 Antibody Set
TIMP-1 | Human
R-PLEX Human MMP-9 Antibody Set
MMP-9 (active) | Human
V-PLEX Plus Angiogenesis Panel 1 Human Kit
FGF (basic), PlGF, Tie-2, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
V-PLEX Angiogenesis Panel 1 Human Kit
FGF (basic), PlGF, Tie-2, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
V-PLEX Human Biomarker 46-Plex Kit
CRP, Eotaxin, Eotaxin-3, FGF (basic), GM-CSF, ICAM-1, IFN-γ, IL-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-21, IL-22, IL-23, IL-27, IL-31, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, MIP-3α, PlGF, SAA, TARC, Tie-2, TNF-α, TNF-β, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
V-PLEX Plus Human Biomarker 46-Plex Kit
CRP, Eotaxin, Eotaxin-3, FGF (basic), GM-CSF, ICAM-1, IFN-γ, IL-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-21, IL-22, IL-23, IL-27, IL-31, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, MIP-3α, PlGF, SAA, TARC, Tie-2, TNF-α, TNF-β, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
V-PLEX Human Biomarker 40-Plex Kit
CRP, Eotaxin, Eotaxin-3, FGF (basic), GM-CSF, ICAM-1, IFN-γ, IL-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, PlGF, SAA, TARC, Tie-2, TNF-α, TNF-β, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
V-PLEX Plus Human Biomarker 40-Plex Kit
CRP, Eotaxin, Eotaxin-3, FGF (basic), GM-CSF, ICAM-1, IFN-γ, IL-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, PlGF, SAA, TARC, Tie-2, TNF-α, TNF-β, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
Human Flt-1 Antibody
VEGFR-1/Flt-1
V-PLEX Neuroinflammation Panel 1 Human Kit
CRP, Eotaxin, Eotaxin-3, FGF (basic), ICAM-1, IFN-γ, IL-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12/IL-23p40, IL-13, IL-15, IL-16, IL-17A, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, PlGF, SAA, TARC, Tie-2, TNF-α, TNF-β, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
V-PLEX Plus Neuroinflammation Panel 1 Human Kit
CRP, Eotaxin, Eotaxin-3, FGF (basic), ICAM-1, IFN-γ, IL-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12/IL-23p40, IL-13, IL-15, IL-16, IL-17A, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, PlGF, SAA, TARC, Tie-2, TNF-α, TNF-β, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1 | Human
Multiplex
V-PLEX Human Flt-1 Kit
VEGFR-1/Flt-1 | Human
Singleplex
V-PLEX Plus Human Flt-1 Kit
VEGFR-1/Flt-1 | Human
Singleplex
Muscle Injury Panel 2 Rat Kit
CK, TIMP-1 | Rat
Multiplex
Inflammation Panel 3 (cyno) Kit
MCP-1, NGAL/LCN2, TIMP-1 | Non-human primate
Multiplex
Inflammation Panel 1 Rat Kit
MCP-1, NGAL/LCN2, TIMP-1, TSP-1 | Rat
Multiplex
Human TIMP-1 Kit
TIMP-1 | Human
Singleplex
Human Growth Factor I Kit
FGF (basic), PlGF, VEGF-A, VEGFR-1/Flt-1 | Human
Multiplex
Human Osteoprotegerin Kit
Osteoprotegerin | Human
Singleplex
Human Bone Panel I Kit
ALP, Osteoprotegerin, Sclerostin | Human
Multiplex
Human MMP-9 Ultra-Sensitive Kit
MMP-9 (active) | Human
Singleplex
Human MMP 3-Plex Ultra-Sensitive Kit
MMP-1, MMP-3 (total), MMP-9 (active) | Human
Multiplex
Browse Our Products

By Analytes
By Applications
Search
Customer Service/Orders


Scientific/Technical Support


Instrument Support


Company Headquarters