CSF Single-cell Sequencing and Proteomics of Chronic Postsurgical Pain in Patients With Lower Limb Fractures

Chronic Postsurgical Pain Clinical Trial

Official title:

Cerebrospinal Fluid Single-cell Sequencing and Proteomics Analysis of the Chronic Postsurgical Pain in Patients Following Open Reduction Internal Fixation of Lower Limb Fractures

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT06126289
• Other study ID #: XZXY-LK-20230530-084
• Status: Not yet recruiting
• Start date: December 25, 2023
• Est. completion date: July 30, 2025

Study information

• Verified date: June 2023
• Source: Xuzhou Central Hospital
• Contact: Yang Zi D Zhu, Doctor
• Phone: +86 18168779150
• Email: zhuyz[@]188.com
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The purpose of this study is to assess the proteomics and transcriptomic differences between pain-free control subjects and patients with chronic postoperative pain through single-cell sequencing technology.

Description:

Chronic pain,one of the most frequent causes for patients to seek medical care,is a recognized health problem.Chronic postsurgical pain (CPSP), commonly defined as pain that develops after a surgical procedure and persists at least 3 months, constitutes a widely underdiagnosed and often poorly treated medical problem affecting 10-50% of all postsurgical patients. According to the reports,in the United States alone,1.9 million persons abused or were dependent on prescription opioid analgesics for chronic pain in 2013,contributing to one of the worst public health crises the developed world has recently faced.Here,open reduction and internal fixation of lower limb fractures ,what we focus, is a common surgical procedure in orthopedics and microscopic hand and foot surgery.The removal of the intramedullary nail can relieve anterior knee pain, but in a substantial number of patients, pain persists after nail removal.The most painful daily activities are kneeling and squatting.Therefore, it is increasingly important and urgent to solve the postoperative chronic pain of patients with lower extremity fractures surgery.

The underlying biology of chronic postoperative pain and genetic heritability is complex and not yet fully understood . A common feature of CPSP is that the painful sensations change from the familiar acute postoperative pain to a complex pain syndrome with nociplastic characteristics,neuropathic characteristics, or both. Preclinical studies have revealed that neuroinflammation is one of pathological hallmarks of CPSP. The transition from acute to chronic pain starts early within the first 2 weeks after nociception by peripheral and central inflammatory processes and activation of spinal glial cells.Repetitive nociception resulting from prolonged inflammatory and neuropathic responses to noxious stimuli causes a cascade of biochemical and structural changes to various pain pathways resulting in sensitization of the peripheral and CNS. Cytokines and neurotrophic factors have been identified as pivotal mediators involved in neuroimmune activation pathways and cascades in various preclinical chronic pain models.

The brain is surrounded by the meninges, a membranous covering that contains the cerebrospinal fluid (CSF).Its circulatory system transmits peripheral stimulation to the cerebrum, and central signal is transmitted to the dorsal root ganglion. CSF ,as a bridge between peripheral and central, contains a tightly regulated immune system and metabolitites and reflects the inflammatory processes and activation of spinal glial cells. However, knowledge is lacking about how CSF contains are altered with pain.We thus hypothesized that comparing the CSF protemics and immune transcriptomes associated with pain-free control subjects and patients with chronic postoperative pain would provide insights into the pathophysiology of CPSP. Here,a single-cell transcriptomic resource exploring the cerebrospinal fluid immune system and proteomics of patients with postoperative chronic pain will uncover the key molecules and pathways of CPSP.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 20
• Est. completion date: July 30, 2025
• Est. primary completion date: July 30, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: N/A and older

Eligibility

Inclusion Criteria:

1. ASA physical status 1 to 3 (males and females)

2. Undergone open reduction and internal fixation of the lower limbs and plan to take out the internal fixation under spinal anesthesia

Exclusion Criteria:

1. Absence of written consent

2. Contraindication to regional anaesthesia

3. Known dementia at time of operation

4. History or opioid abuse

5. Unexpected conversion of general anesthesia or surgery is not carried out

Related Conditions & MeSH terms

• Chronic Postsurgical Pain
• Pain, Postoperative

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Xuzhou Central Hospital

References & Publications (10)

Clay FJ, Watson WL, Newstead SV, McClure RJ. A systematic review of early prognostic factors for persisting pain following acute orthopedic trauma. Pain Res Manag. 2012 Jan-Feb;17(1):35-44. doi: 10.1155/2012/935194. — View Citation

Fitzcharles MA, Cohen SP, Clauw DJ, Littlejohn G, Usui C, Hauser W. Nociplastic pain: towards an understanding of prevalent pain conditions. Lancet. 2021 May 29;397(10289):2098-2110. doi: 10.1016/S0140-6736(21)00392-5. — View Citation

Friesgaard KD, Gromov K, Knudsen LF, Brix M, Troelsen A, Nikolajsen L. Persistent pain is common 1 year after ankle and wrist fracture surgery: a register-based questionnaire study. Br J Anaesth. 2016 May;116(5):655-61. doi: 10.1093/bja/aew069. — View Citation

GBD 2017 Disease and Injury Incidence and Prevalence Collaborators. Global, regional, and national incidence, prevalence, and years lived with disability for 354 diseases and injuries for 195 countries and territories, 1990-2017: a systematic analysis for the Global Burden of Disease Study 2017. Lancet. 2018 Nov 10;392(10159):1789-1858. doi: 10.1016/S0140-6736(18)32279-7. Epub 2018 Nov 8. Erratum In: Lancet. 2019 Jun 22;393(10190):e44. — View Citation

Hankerd K, McDonough KE, Wang J, Tang SJ, Chung JM, La JH. Postinjury stimulation triggers a transition to nociplastic pain in mice. Pain. 2022 Mar 1;163(3):461-473. doi: 10.1097/j.pain.0000000000002366. — View Citation

Leliveld MS, Van Lieshout EMM, Polinder S, Verhofstad MHJ; TRAVEL Study Investigators. Effect of Transverse Versus Longitudinal Incisions on Anterior Knee Pain After Tibial Nailing (TRAVEL): A Multicenter Randomized Trial with 1-Year Follow-up. J Bone Joint Surg Am. 2022 Dec 21;104(24):2160-2169. doi: 10.2106/JBJS.22.00389. Epub 2022 Oct 25. — View Citation

Rees S, Tutton E, Achten J, Bruce J, Costa ML. Patient experience of long-term recovery after open fracture of the lower limb: a qualitative study using interviews in a community setting. BMJ Open. 2019 Oct 9;9(10):e031261. doi: 10.1136/bmjopen-2019-031261. — View Citation

Scholz J, Finnerup NB, Attal N, Aziz Q, Baron R, Bennett MI, Benoliel R, Cohen M, Cruccu G, Davis KD, Evers S, First M, Giamberardino MA, Hansson P, Kaasa S, Korwisi B, Kosek E, Lavand'homme P, Nicholas M, Nurmikko T, Perrot S, Raja SN, Rice ASC, Rowbotham MC, Schug S, Simpson DM, Smith BH, Svensson P, Vlaeyen JWS, Wang SJ, Barke A, Rief W, Treede RD; Classification Committee of the Neuropathic Pain Special Interest Group (NeuPSIG). The IASP classification of chronic pain for ICD-11: chronic neuropathic pain. Pain. 2019 Jan;160(1):53-59. doi: 10.1097/j.pain.0000000000001365. — View Citation

van Ransbeeck A, Budilivski A, Spahn DR, Macrea L, Giuliani F, Maurer K. Pain Assessment Discrepancies: A Cross-Sectional Study Highlights the Amount of Underrated Pain. Pain Pract. 2018 Mar;18(3):360-367. doi: 10.1111/papr.12612. Epub 2017 Sep 20. — View Citation

Wyss-Coray T, Mucke L. Inflammation in neurodegenerative disease--a double-edged sword. Neuron. 2002 Aug 1;35(3):419-32. doi: 10.1016/s0896-6273(02)00794-8. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Significantly different proteomics and transcriptomes between Chronic Postsurgical Pain and pain-free subjects	Differences in the proteins in the fluid around the lumbar, between Chronic Postsurgical Pain and Pain-free subjects.,will be quantified using Mass spectrometry,for: neural cell adhesion molecule L1, complement C4-A, lysozyme C, receptor-type tyrosine-protein phosphatase zeta, apolipoprotein D, alpha-1-antichymotrypsin, granulins, calcium/calmodulin-dependent protein kinase type II subunit alpha, mast/stem cell growth factor receptor Kit, prolow-density lipoprotein receptor-related protein 1 and so on.; These proteins may identify the disease and define its mechanism.	Up to 3 months after fixation
Primary	Inflammatory cytokines in Chronic Postsurgical Pain patients	Biomarkers from CSF will be quantified using Meso Scale Discovery multiplex kit (K15210D), for: CRP, Eotaxin, Eotaxin-3, FGF (basic), ICAM-1, IFN-?, IL-1a, IL-1ß, 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-1a, MIP-1ß, PlGF, SAA, TARC, Tie-2, TNF-a, TNF-ß, VCAM-1, VEGF-A, VEGF-C, VEGF-D, VEGFR-1/Flt-1.; The levels of these biomarkers will be compared between the group between CPSP and pain-free subjects.	Up to 3 months after fixation surgery