Researchers in a recent study have demonstrated that specific plasma proteins can actually forecast the persistence of pelvic pain after laparoscopic surgery in young adults and adolescents with endometriosis. The finding reflects how this is related to personalized treatment approaches and potential biological pathways involved in endometriosis-associated pain. This discovery was from a prospective analysis using a multiplex aptamer-based proteomics biomarker discovery platform that was published in the American Journal of Obstetrics and Gynecology by Naoko Sasamoto and colleagues.
The objective of this study was to identify, in plasma proteins, potential markers for the persistence of pelvic pain after laparoscopic surgery in young patients with endometriosis using a state-of-the-art proteomics platform.
Prospective cohort study of 142 women with laparoscopically confirmed endometriosis enrolled in the prospective cohort study Women's Health Study: From Adolescence to Adulthood between 2012 and through the end of 2018 with prospectively collected and banked biological specimens and patient data using harmonized tools. They measured 1,305 plasma protein levels of banked pre surgical blood from women scheduled for laparoscopic ablation or excision of endometriosis. Worsening or persistent postsurgical pelvic pain was defined by new or stable pain severity, frequency, or life interference of dysmenorrhea or acyclic pelvic pain at one year post surgery.
In this research, individuals of 20 years and above with a new diagnosis in proteinuria in 2009 were recruited. Patients who had previous cranial nerve palsy, incomplete data, diagnosed with a new CNP, or who died within a year after examination were excluded. The subjects in this research were divided into six groups based on urine dipstick test results. In the study, Cox proportional hazard regression analysis was applied to identify the association between proteinuria and ocular motor CNP.
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The median age at blood draw was 17 years (IQR, 15-19), and 90% were White.
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All had superficial peritoneal lesions treated by excision or ablation. One year post surgery, 54% of participants experienced worsening or persistent pelvic pain, while 46% reported improvement.
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Researchers identified 83 proteins associated with worsening or persistent pain (nominal P<.05).
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Higher presurgical plasma levels of CD63 antigen (OR, 2.98; 95% CI, 1.44-6.19) and CD47 (OR, 2.68; 95% CI, 1.28-5.61) were linked to persistent pain.
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Lower levels of Sonic Hedgehog protein (OR, 0.55; 95% CI, 0.36-0.84) were observed in those with persistent pain.
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Pathways related to cell migration were up-regulated, while angiogenesis pathways were down-regulated in participants with worsening pain.
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An increase in Sonic Hedgehog protein levels from pre surgery to postsurgery was associated with a 4-fold increase in the risk of persistent pain (OR [quartile 4 vs 1], 3.86; 95% CI, 1.04-14.33).
The research findings indicate that plasma proteins can be investigated as biomarkers predicting surgical outcomes in patients with endometriosis. It would actually stratify risk and individualised treatments, hence pain management and improved quality of life to the young women suffering from the condition.
An aptamer-based proteomics platform identified plasma proteins and pathways related to persistent pelvic pain following surgical management of endometriosis. Such biomarkers may offer an assist in risk stratification and particularised treatment strategies for adolescents and young adults with endometriosis.
Reference:
Sasamoto, N., Ngo, L., Vitonis, A. F., Dillon, S. T., Prasad, P., Laufer, M. R., As-Sanie, S., Schrepf, A., Missmer, S. A., Libermann, T. A., & Terry, K. L. (2024). Plasma proteins and persistent postsurgical pelvic pain among adolescents and young adults with endometriosis. American Journal of Obstetrics and Gynecology, 231(2), 240.e1-240.e11. https://doi.org/10.1016/j.ajog.2024.03.005
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