scholarly journals A Pilot Study: Changes of Gut Microbiota in Post-surgery Colorectal Cancer Patients

2018 ◽  
Vol 9 ◽  
Author(s):  
Jing Cong ◽  
Hua Zhu ◽  
Dong Liu ◽  
Tianjun Li ◽  
Chuantao Zhang ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Pilot Study ◽  
Gut Microbiota ◽  
Cancer Patients ◽  
Post Surgery ◽  
Colorectal Cancer Patients

scholarly journals Could gut microbiota serve as prognostic biomarker associated with colorectal cancer patients' survival? A pilot study on relevant mechanism

Oncotarget ◽  
2016 ◽  
Vol 7 (29) ◽  
pp. 46158-46172 ◽  
Author(s):  
Zhiliang Wei ◽  
Shougen Cao ◽  
Shanglong Liu ◽  
Zengwu Yao ◽  
Teng Sun ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Pilot Study ◽  
Gut Microbiota ◽  
Cancer Patients ◽  
Prognostic Biomarker ◽  
Colorectal Cancer Patients

Iodine-131 human-mouse chimeric Fab monoclonal antibody A7 guided surgery for colorectal cancer patients: A pilot study

Surgery Today ◽  
1999 ◽  
Vol 29 (2) ◽  
pp. 190-193 ◽  
Author(s):  
Kazuhito Yamamoto ◽  
Kazuya Kitamura ◽  
Satoki Nishida ◽  
Daisuke Ichikawa ◽  
Kazuma Okamoto ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Monoclonal Antibody ◽  
Pilot Study ◽  
Cancer Patients ◽  
Guided Surgery ◽  
Iodine 131 ◽  
Monoclonal Antibody A7 ◽  
Colorectal Cancer Patients

Effects of Chemotherapy on Extracellular Vesicles and Coagulation Activation in Colorectal Cancer Patients: A Pilot Study

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 1425-1425
Author(s):  
Ludwig Traby ◽  
Hannah C. Puhr ◽  
Marietta Kollars ◽  
Kammer Michael ◽  
Gerald Prager ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Venous Thromboembolism ◽  
Pilot Study ◽  
Cancer Patients ◽  
Tissue Factor ◽  
Extracellular Vesicles ◽  
Advanced Colorectal Cancer ◽  
Coagulation Activation ◽  
Colorectal Cancer Patients ◽  
D Dimer

Abstract Introduction Venous thromboembolism is a frequent complication in cancer patients and results in a considerable morbidity and mortality. The underlying mechanisms leading to the increased thrombotic risk are yet poorly understood. We have previously shown that levels of extracellular vesicles (EV) are elevated in patients with colorectal cancer compared to healthy control individuals (Hron et al, Thromb Haemost 2007;97:119-123). EV originate from blood or endothelial cells, or from the underlying tumor itself. They may contribute to coagulation activation and propagation by exposing tissue factor and by providing a surface for the interaction of coagulation factors. In that study, the number of EV was also positively correlated with levels of D-dimer, a fibrin split product and marker of coagulation activation. We hypothesize that number of EV and levels of D-dimer decline with decreasing tumor load during antineoplastic treatment. Therefore, the study aims at evaluating the long-term effect of chemotherapy on hemostatic system activation in patients with advanced colorectal cancer. Methods We conducted a pilot study including patients receiving chemotherapy because of advanced colorectal cancer. All chemotherapy regimens were based on 5-fluorouracilcombined with either oxaliplatin or irinotecan without or with an antibody (bevacizumab in 72%, cetuximab in 11%, and ramucirumab in 5% of patients, respectively). Patients were followed for 3 chemotherapy cycles. The study was approved by the local ethics committee, was conducted according to the Declaration of Helsinki and informed consent was obtained from all study patients. Venous blood was sampled at each cycle immediately before chemotherapy and was centrifuged at 2600 g for 15 minutes. The number of EV was assessed by flow cytometry using a FACSCalibur® flow cytometer with CellQuest™ software (Becton Dickinson) immediately after blood collection and centrifugation in fresh plasma. EV were defined by size (forward scatter, <1 µm) and annexin V binding. Tissue factor positive EV were characterized by an anti-CD142 antibody. Plasma was then frozen and stored at -80°C and was used for determination of markers of coagulation activation (D-dimer, prothrombin fragment f1.2) by commercially available ELISA kits. All outcome variables were log-transformed due to skewed distributions. The paired t-test was used to compare baseline (before the 1st chemotherapy) levels with measurements obtained from the 2nd and 3rd blood sampling. In order to provide a clearer legibility, all data is presented in absolute numbers and all values are given as median (quartiles) if not otherwise stated. Results 18 patients completed 3 cycles of chemotherapy. Their mean (± SD) age was 60.5 (± 12.2) years and 14 (78%) were men. None of the patients developed venous thromboembolism. Table 1 shows the levels of coagulation activation markers and the number of EV at baseline and before the 2nd and 3rd cycle of chemotherapy, respectively. D-dimer levels were 1.22 (0.42-2.31) µg mL-1 at baseline and significantly decreased over the course of treatment. D-dimer levels did not correlate with the number of EV either at baseline or at later time points. The number of EV decreased from 474 (312-617) x 103 mL-1 at baseline to 359 (239-474) x 103 mL-1 before the 3rd cycle. The proportion of tissue factor positive EV was small at baseline and throughout treatment. Levels of prothrombin fragment f1.2 did not change during treatment and did not correlate with number of EV at any time point. Conclusions In patients with advanced colorectal cancer chemotherapy attenuates coagulation activation as indicated by a decline of D-dimer levels and number of EV. These findings warrant further studies in a larger patient population and longer observation time. Table 1 Number of extracellular vesicles (EV) and markers of coagulation activation in plasma of colorectal cancer patients before and during chemotherapy Table 1. Number of extracellular vesicles (EV) and markers of coagulation activation in plasma of colorectal cancer patients before and during chemotherapy Disclosures No relevant conflicts of interest to declare.

Association between pretreatment Fusobacterium nucleatum and cancer pain at six months postsurgery in newly diagnosed colorectal cancer patients: Results from the ColoCare Study.

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 3581-3581
Author(s):  
Anita Roselyn Peoples ◽  
Biljana Gigic ◽  
Jennifer Ose ◽  
Andreana Natalie Holowatyj ◽  
Patrick M. Mallea ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cancer Pain ◽  
Cancer Patients ◽  
Fusobacterium Nucleatum ◽  
Tumor Stage ◽  
Life Questionnaire ◽  
Newly Diagnosed ◽  
European Organization ◽  
Post Surgery ◽  
Colorectal Cancer Patients

3581 Background: Pain is a prevalent, debilitating symptom in more than half of cancer patients. Accumulating evidence suggests a bi-directional relationship between gut microbiota and pain, potentially via inflammation and oxidative stress. Fusobacterium nucleatum (Fn), a pro-inflammatory anaerobic bacterium, is frequently detected in colorectal cancer (CRC) patients. To date, no study has identified a relationship between Fn and cancer pain in CRC patients. We investigated the associations between pre-treatment Fn and cancer pain at 6 months post-surgery in CRC patients. Methods: We utilized pre-surgery stool samples collected from 80 prospectively followed, newly diagnosed CRC patients recruited from the German site of the international ColoCare Study. Eligible patients were neo-adjuvant treatment naïve and did not use antibiotics for at least 1 month before stool collection. Fn DNA was assessed via quantitative real-time polymerase chain reaction. Patients were median split into Fn-high (>17.27; n=40) or Fn-low (≤17.27; n=40). Cancer pain was assessed using the 2 pain symptom items from the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core-30 (lower score=lower pain) at pre- and 6 months post-surgery. Results: Before surgery, 48% of all patients reported any pain. At 6 months post-surgery, we observed a decrease in cancer pain by 33% for Fn-low, while there was an increase in cancer pain by 41% for Fn-high. After controlling for pre-surgery cancer pain in ANCOVA model, we observed significantly higher mean cancer pain at 6 months post-surgery in the Fn-high group vs. the Fn-low group (24.07 vs. 13.44; effect size, ES=0.45; p=0.04). These results were maintained even after controlling for age, sex, tumor stage and site, adjuvant chemotherapy, BMI, physical activity, and any pain medications (29.11 vs. 16.55; ES=0.53; p=0.03). Conclusions: These findings suggest that high Fn is an independent predictor of cancer pain at 6 months post-surgery in colorectal cancer patients. Further research is needed to confirm and understand the mechanisms of these results. Funding: NCI U01 CA206110.

scholarly journals Structural segregation of gut microbiota between colorectal cancer patients and healthy volunteers

2011 ◽  
Vol 6 (2) ◽  
pp. 320-329 ◽  
Author(s):  
Tingting Wang ◽  
Guoxiang Cai ◽  
Yunping Qiu ◽  
Na Fei ◽  
Menghui Zhang ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Gut Microbiota ◽  
Healthy Volunteers ◽  
Cancer Patients ◽  
Colorectal Cancer Patients

Su1994 ORAL IRON THERAPY PROMOTES A PROINFLAMMATORY GUT MICROBIOTA IN COLORECTAL CANCER PATIENTS WITH IRON DEFICIENCY ANAEMIA

2020 ◽  
Vol 158 (6) ◽  
pp. S-737-S-738
Author(s):  
Oliver Phipps ◽  
Mohammed Nabil Quraishi ◽  
Aditi Kumar ◽  
Edward Dickson ◽  
Oliver Ng ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Iron Deficiency ◽  
Gut Microbiota ◽  
Cancer Patients ◽  
Iron Deficiency Anaemia ◽  
Oral Iron ◽  
Iron Therapy ◽  
Deficiency Anaemia ◽  
Oral Iron Therapy ◽  
Colorectal Cancer Patients
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