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ORIGINAL ARTICLE
Year : 2019  |  Volume : 15  |  Issue : 1  |  Page : 185-191

A pilot study of the impact of Vitamin C supplementation with neoadjuvant chemoradiation on regulators of inflammation and carcinogenesis in esophageal cancer patients


1 Department of Clinical Pharmacy, Faculty of Pharmacy, Assiut University, Assiut, Egypt; Department of Clinical Medicine, Trinity Centre for Health Sciences, St. James's Hospital and Trinity College Dublin, Dublin, Ireland
2 Department of Clinical Surgery, Trinity Centre for Health Sciences, St. James's Hospital and Trinity College Dublin, Dublin, Ireland
3 Department of Clinical Medicine, Trinity Centre for Health Sciences, St. James's Hospital and Trinity College Dublin, Dublin, Ireland

Correspondence Address:
Dr. John V Reynolds
Department of Clinical Surgery, Trinity Centre for Health Sciences, St. James's Hospital and Trinity College Dublin, Dublin 8
Ireland
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jcrt.JCRT_763_16

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Aims: Vitamin C plays a role in chemoprevention in cancer treatment, and Vitamin C modulates many regulators of inflammation in in vitro studies. The aim of this study is to assess the effect of Vitamin C supplementation with neoadjuvant chemoradiation in esophageal adenocarcinoma on the nuclear factor-kappa B (NF-κB) and associated cytokines. Materials and Methods: A total of 20 patients undergoing multimodal treatment for esophageal adenocarcinoma were randomized to receive Vitamin C (1000 mg/day) orally for 4 weeks or no supplementation. Pre- and post-Vitamin C endoscopic biopsies were used for the study of NF-κB activity and cytokine analysis. Results: NF-κB activity along with cytokines was activated in the cancer tissue pretreatment. Down-regulation in NF-κB activity was observed in 25% of cases, two from the Vitamin C arm posttreatment. There was a significant reduction in cytokines levels in the cancer group, and this effect was more pronounced in the Vitamin C group (P < 0.05). Conclusions: Vitamin C supplementation had a mild protective effect in modulating of regulators of inflammation and carcinogenesis. Further studies with larger numbers of endpoints are needed to evaluate its effect on modulation of chemoradiation responses.


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