PMID- 34602367 OWN - NLM STAT- MEDLINE DCOM- 20220228 LR - 20230707 IS - 1424-3911 (Electronic) IS - 1424-3903 (Print) IS - 1424-3903 (Linking) VI - 21 IP - 8 DP - 2021 Dec TI - Serum biomarkers for chronic pancreatitis pain patterns. PG - 1411-1418 LID - S1424-3903(21)00580-9 [pii] LID - 10.1016/j.pan.2021.09.016 [doi] AB - OBJECTIVES: Chronic pancreatitis (CP) is associated with debilitating refractory pain. Distinct subtypes of CP pain have been previously characterized based on severity (none, mild-moderate, severe) and temporal (none, intermittent, constant) nature of pain, but no mechanism-based tools are available to guide pain management. This exploratory study was designed to determine if potential pain biomarkers could be detected in patient serum and whether they associate with specific pain patterns. METHODS: Cytokines, chemokines, and peptides associated with nociception and pain were measured in legacy serum samples from CP patients (N = 99) enrolled in the North American Pancreatitis Studies. The unsupervised hierarchical cluster analysis was applied to cluster CP patients based on their biomarker profile. Classification and regression tree was used to assess whether these biomarkers can predict pain outcomes. RESULTS: The hierarchical cluster analysis revealed a subset of patients with predominantly constant, mild-moderate pain exhibited elevated interleukin-1beta (IL-1beta), interleukin-6 (IL-6), interleukin-2 (IL-2), tumor necrosis factor alpha (TNFalpha), and monocyte chemoattractant protein-1 (MCP1) whereas patients with higher interleukin-4 (IL-4), interleukin-8 (IL-8) and calcitonin gene related peptide (CGRP) were more likely to have severe pain. Interestingly, analyses of each individual biomarker revealed that patients with constant pain had reduced circulating TNFalpha and fractalkine. Patients with severe pain exhibited a significant reduction in TNFalpha as well as trends towards lower levels of IL-6 and substance P. DISCUSSION: The observations from this study indicate that unique pain experiences within the chronic pancreatitis population can be associated with distinct biochemical signatures. These data indicate that further hypothesis-driven analyses combining biochemical measurements and detailed pain phenotyping could be used to develop precision approaches for pain management in patients with chronic pancreatitis. CI - Copyright (c) 2021 IAP and EPC. Published by Elsevier B.V. All rights reserved. FAU - Saloman, Jami L AU - Saloman JL AD - Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Pittsburgh, PA, USA; Pittsburgh Center for Pain Research, School of Medicine, University of Pittsburgh, PA, USA; Department of Neurobiology, School of Medicine, University of Pittsburgh, PA, USA. Electronic address: jls354@pitt.edu. FAU - Tang, Gong AU - Tang G AD - Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA. FAU - Stello, Kimberly M AU - Stello KM AD - Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Pittsburgh, PA, USA. FAU - Hall, Kristen E AU - Hall KE AD - Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Pittsburgh, PA, USA. FAU - Wang, Xianling AU - Wang X AD - Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA. FAU - AlKaade, Samer AU - AlKaade S AD - Saint Louis University, Saint Louis, MO, USA. FAU - Banks, Peter A AU - Banks PA AD - Brigham and Women's Hospital, Boston, MA, USA. FAU - Brand, Randall E AU - Brand RE AD - Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Pittsburgh, PA, USA. FAU - Conwell, Darwin L AU - Conwell DL AD - The Ohio State University Wexner Medical Center, Columbus, OH, USA. FAU - Cote, Gregory A AU - Cote GA AD - Medical University of South Carolina, Charleston, SC, USA. FAU - Forsmark, Christopher E AU - Forsmark CE AD - Division of Gastroenterology, Hepatology, and Nutrition, University of Florida, Gainesville, FL, USA. FAU - Gardner, Timothy B AU - Gardner TB AD - Section of Gastroenterology and Hepatology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA. FAU - Gelrud, Andres AU - Gelrud A AD - Department of Internal Medicine, Miami Cancer Institute, Gastro Health, Miami, FL, USA. FAU - Lewis, Michele D AU - Lewis MD AD - Department of Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, FL, USA. FAU - Sherman, Stuart AU - Sherman S AD - Indiana University School of Medicine, Indianapolis, IN, USA. FAU - Slivka, Adam AU - Slivka A AD - Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Pittsburgh, PA, USA. FAU - Whitcomb, David C AU - Whitcomb DC AD - Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Pittsburgh, PA, USA; Pittsburgh Center for Pain Research, School of Medicine, University of Pittsburgh, PA, USA; Departments of Cell Biology & Physiology, and Human Genetics, University of Pittsburgh, PA, USA. FAU - Yadav, Dhiraj AU - Yadav D AD - Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Pittsburgh, PA, USA. CN - NAPS consortium LA - eng GR - R56 DK061451/DK/NIDDK NIH HHS/United States GR - R21 DK122293/DK/NIDDK NIH HHS/United States GR - K01 DK120737/DK/NIDDK NIH HHS/United States GR - U01 DK108306/DK/NIDDK NIH HHS/United States GR - R01 DK061451/DK/NIDDK NIH HHS/United States GR - R01 DK077906/DK/NIDDK NIH HHS/United States PT - Journal Article DEP - 20210930 PL - Switzerland TA - Pancreatology JT - Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.] JID - 100966936 RN - 0 (Biomarkers) RN - 0 (Interleukin-6) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Biomarkers/blood MH - Humans MH - *Interleukin-6 MH - Pain MH - *Pancreatitis, Chronic/complications MH - Tumor Necrosis Factor-alpha PMC - PMC8629935 MID - NIHMS1745371 OTO - NOTNLM OT - Chronic pancreatitis OT - Pain biomarkers OT - Pain frequency OT - Pain severity OT - Serum COIS- Disclosures The authors have no disclosures and report no actual or potential conflicts of interest. EDAT- 2021/10/05 06:00 MHDA- 2022/03/01 06:00 PMCR- 2022/12/01 CRDT- 2021/10/04 05:40 PHST- 2021/06/08 00:00 [received] PHST- 2021/09/15 00:00 [revised] PHST- 2021/09/25 00:00 [accepted] PHST- 2021/10/05 06:00 [pubmed] PHST- 2022/03/01 06:00 [medline] PHST- 2021/10/04 05:40 [entrez] PHST- 2022/12/01 00:00 [pmc-release] AID - S1424-3903(21)00580-9 [pii] AID - 10.1016/j.pan.2021.09.016 [doi] PST - ppublish SO - Pancreatology. 2021 Dec;21(8):1411-1418. doi: 10.1016/j.pan.2021.09.016. Epub 2021 Sep 30.