With high morbidity and mortality, urinary bladder cancer (BC) ranks fifth among common cancers globally. The inherent limitations of urine cytology and cystoscopy, and marginal enhancements in the rate of survival promt us to develop surrogate serum based metabolic biomarkers of screening, identification, and follow-up protocols of management for BC patients. Earlier, we exhibited that abnormal expression levels of dimethylamine (DMA), malonate, lactate, glutamine, histidine, and valine in serum may be used as signature metabolites to differentiate BC from healthy controls (HC) (J. Proteome Res. 2013; 12(12):5839-50). Here we further gauge and validate these observations by comparing pre-operative to post-operative follow-up BC patients. This study was conducted on 160 sera samples involving HC (n = 52), pre-operative (n = 55) and post-operative (n = 53) BC cases. 1H nuclear magnetic resonance (NMR) spectroscopy was used to generate serum metabolic profiles and to gauge aberrantly expressed metabolites. The targeted metabolomic approach revealed that the expression levels of these signature metabolites were progressively and significantly decreased in post-operative follow-up at the interval of 30, 60, and 90 days compared to pre-operative BC sera samples and were maintained at HC levels. Serum metabolic biomarkers appear to be an inspiring and least-invasive tactic for detection and prognosticating BC patient follow-up.
Journal of pharmaceutical and biomedical analysis. 2020 Feb 01 [Epub ahead of print]
Ashish Gupta, Navneeta Bansal, Nilay Mitash, Deepak Kumar, Manoj Kumar, Satya Narain Sankhwar, Anil Mandhani, Uday Pratap Singh
Centre of Biomedical Research, SGPGIMS Campus, Lucknow, India. Electronic address: ., Department of Urology, King George's Medical University, Lucknow, India., Department of Urology, SGPGIMS, Lucknow, India., Centre of Biomedical Research, SGPGIMS Campus, Lucknow, India.