scholarly journals Parvimonas micra as a putative non-invasive faecal biomarker for colorectal cancer

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Thyra Löwenmark ◽  
Anna Löfgren-Burström ◽  
Carl Zingmark ◽  
Vincy Eklöf ◽  
Michael Dahlberg ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
High Risk ◽  
Population Based ◽  
Non Invasive ◽  
Test Sensitivity ◽  
Parvimonas Micra ◽  
Increased Risk ◽  
Microbial Biomarkers ◽  
Faecal Samples ◽  
Potential Use

Abstract The use of faecal microbial markers as non-invasive biomarkers for colorectal cancer (CRC) has been suggested, but not fully elucidated. Here, we have evaluated the importance of Parvimonas micra as a potential non-invasive faecal biomarker in CRC and its relation to other microbial biomarkers. The levels of P. micra, F. nucleatum and clbA + bacteria were quantified using qPCR in faecal samples from a population-based cohort of patients undergoing colonoscopy due to symptoms from the large bowel. The study included 38 CRC patients, 128 patients with dysplasia and 63 controls. The results were validated in a second consecutive CRC cohort including faecal samples from 238 CRC patients and 94 controls. We found significantly higher levels of P. micra in faecal samples from CRC patients compared to controls. A test for P. micra could detect CRC with a specificity of 87.3% and a sensitivity of 60.5%. In addition, we found that combining P. micra with other microbial markers, could further enhance test sensitivity. Our findings support the potential use of P. micra as a non-invasive biomarker for CRC. Together with other microbial faecal markers, P. micra may identify patients with “high risk” microbial patterns, indicating increased risk and incidence of cancer.

scholarly journals Colorectal Cancer Screening and Surveillance for Non-Hereditary High-Risk Groups—Is It Time for a Re-Think?

2021 ◽  
Author(s):  
James S. Hampton ◽  
Linda Sharp ◽  
Dawn Craig ◽  
Colin J. Rees
Keyword(s):  
Colorectal Cancer ◽  
Cancer Screening ◽  
High Risk ◽  
Risk Groups ◽  
Population Based ◽  
Average Risk ◽  
Screening And Surveillance ◽  
Increased Risk ◽  
Bowel Cancer Screening ◽  
History Of

Abstract Purpose of review Colorectal cancer (CRC) is the second most common cause of cancer death worldwide, killing approximately 900,000 people each year. An individual’s risk of developing CRC is multi-factorial with known risk factors including increasing age, male sex, family history of CRC and raised body mass index. Population-based screening programmes for CRC exist in many countries, and in the United Kingdom (UK), screening is performed through the NHS Bowel Cancer Screening Programme (BCSP). Screening programmes offer a population-based approach for those at “average risk”, and do not typically offer enhanced screening for groups at increased risk. In the UK, such patients are managed via non-screening symptomatic services but in a non-systematic way. Recent findings There is growing evidence that conditions such as cystic fibrosis and a history of childhood cancer are associated with higher risk of CRC, and surveillance of these groups is advocated by some organizations; however, national recommendations do not exist in most countries. Summary We review the evidence for screening “high risk” groups not covered within most guidelines and discuss health economic issues requiring consideration acknowledging that the demand on colonoscopy services is already overwhelming.

scholarly journals Su1228 Increased Risk of Colorectal Cancer in Patients With Prior Ovarian Cancer Diagnosis: A Population Based US Study

2014 ◽  
Vol 146 (5) ◽  
pp. S-408
Author(s):  
Yezaz A. Ghouri ◽  
Sachin Batra ◽  
Nirav C. Thosani ◽  
Sushovan Guha
Keyword(s):  
Colorectal Cancer ◽  
Ovarian Cancer ◽  
Cancer Diagnosis ◽  
Population Based ◽  
Increased Risk

scholarly journals Early postoperative pain as a marker of anastomotic leakage in colorectal cancer surgery

2021 ◽  
Author(s):  
Petrus Boström ◽  
Johan Svensson ◽  
Camilla Brorsson ◽  
Martin Rutegård
Keyword(s):  
Colorectal Cancer ◽  
Postoperative Pain ◽  
Colorectal Surgery ◽  
Anastomotic Leakage ◽  
Rating Scale ◽  
Numerical Rating Scale ◽  
Population Based ◽  
Colorectal Cancer Surgery ◽  
Increased Risk ◽  
Independent Marker

Abstract Purpose Even though anastomotic leakage after colorectal surgery is a major clinical problem in need of a timely diagnosis, early indicators of leakage have been insufficiently studied. We therefore conducted a population-based observational study to determine whether the patient’s early postoperative pain is an independent marker of anastomotic leakage. Methods By combining the Swedish Colorectal Cancer Registry and the Swedish Perioperative Registry, we retrieved prospectively collected data on 3084 patients who underwent anastomotic colorectal surgery for cancer in 2014–2017. Postoperative pain, measured with the numerical rating scale (NRS), was considered exposure, while anastomotic leakage and reoperation due to leakage were outcomes. We performed logistic regression to evaluate associations, estimating odds ratios (ORs) and 95% confidence intervals (CIs), while multiple imputation was used to handle missing data. Results In total, 189 patients suffered from anastomotic leakage, of whom 121 patients also needed a reoperation due to leakage. Moderate or severe postoperative pain (NRS 4–10) was associated with an increased risk of anastomotic leakage (OR 1.69, 95% CI 1.21–2.38), as well as reoperation (OR 2.17, 95% CI 1.41–3.32). Severe pain (NRS 8–10) was more strongly related to leakage (OR 2.38, 95% CI 1.44–3.93). These associations were confirmed in multivariable analyses and when reoperation due to leakage was used as an outcome. Conclusion In this population-based retrospective study on prospectively collected data, increased pain in the post-anaesthesia care unit is an independent marker of anastomotic leakage, possibly indicating a need for further diagnostic measures.

Potential use of transrenal DNA for non-invasive monitoring and prognosis of colorectal cancer

Biomarkers ◽  
2019 ◽  
Vol 24 (6) ◽  
pp. 524-529
Author(s):  
Wei Chen ◽  
Yingying Liao ◽  
Chunxia Yang ◽  
Zhicheng Fang ◽  
Boyi Liu ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Invasive Monitoring ◽  
Non Invasive ◽  
Potential Use

scholarly journals Metabolome-defined obesity and the risk of future diabetes and mortality

2021 ◽  
Author(s):  
Filip Ottosson ◽  
Einar Smith ◽  
Ulrika Ericson ◽  
Salvatore Di Somma ◽  
Paola Antonini ◽  
...  
Keyword(s):  
Risk Factors ◽  
High Risk ◽  
Population Based ◽  
Normal Weight ◽  
Plasma Metabolites ◽  
Italian Population ◽  
Related Risk ◽  
Increased Risk ◽  
All Cause Mortality ◽  
Future Diabetes

Background Obesity is a key risk factor for type 2 diabetes, however, up to 20% of patients are normal weight. Our aim was to identify metabolite patterns reproducibly predictive of BMI, and subsequently to test if lean individuals who carry an obese metabolome are at hidden high risk of obesity related diseases, such as diabetes. Methods We measured 109 metabolites in fasted plasma samples of 7663 individuals from two Swedish and one Italian population-based cohort. Ridge regression models were used to predict BMI using the plasma metabolites. Individuals with a predicted BMI either more than 5 kg/m2 higher (overestimated) or lower (underestimated) than their actual BMI were characterized as outliers and further investigated for obesity related risk factors and future risk of diabetes and mortality. Results The plasma metabolome could predict BMI in all cohorts (r2 = 0.48, 0.26 and 0.19). The overestimated group had a BMI similar to individuals correctly predicted as normal weight, similar waist circumference, were not more likely to change weight over time but had a 2 times higher risk of future diabetes and an 80 % increased risk of all-cause mortality. These associations remained after adjustments for obesity-related risk factors and lifestyle parameters. Conclusions We found that lean individuals with an obese metabolome, have an increased risk for diabetes and all-cause mortality compared to lean individuals with a healthy metabolome. Metabolomics may be used to identify hidden high-risk individuals, in order to initiate lifestyle and pharmacological interventions.

scholarly journals 330 Increased Risk of Colorectal Cancer in Individuals With Hypothyroidism and Hyperthyroidism: Results From a Population-Based National Study

2019 ◽  
Vol 114 (1) ◽  
pp. S194-S194
Author(s):  
Emad Mansoor ◽  
Vijit Chouhan ◽  
Mohannad Abou Saleh ◽  
Zaahid M. Sheriff ◽  
Gregory S. Cooper
Keyword(s):  
Colorectal Cancer ◽  
Population Based ◽  
National Study ◽  
Increased Risk

scholarly journals Colorectal cancer survival among Ministry of National Guard-Health Affairs (MNG-HA) population 2009–2017: retrospective study

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Mesnad Alyabsi ◽  
Fouad Sabatin ◽  
Majed Ramadan ◽  
Abdul Rahman Jazieh
Keyword(s):  
Colorectal Cancer ◽  
Distant Metastasis ◽  
Cancer Survival ◽  
National Guard ◽  
Population Based ◽  
Risk Of Death ◽  
Cox Proportional Hazard ◽  
Kaplan Meier ◽  
Increased Risk ◽  
Cox Proportional Hazard Models

Abstract Background Colorectal cancer (CRC) is the most diagnosed cancer among males and third among females in Saudi Arabia, with up to two-third diagnosed at advanced stage. The objective of our study was to estimate CRC survival and determine prognostic factors. Methods Ministry of National Guard- Health Affairs (MNG-HA) registry data was utilized to identify patients diagnosed with CRC between 2009 and 2017. Cases were followed until December 30th, 2017 to assess their one-, three-, and five-year CRC-specific survivals. Kaplan-Meier method and Cox proportional hazard models were used to assess survival from CRC. Results A total of 1012 CRC patients were diagnosed during 2009–2017. Nearly, one-fourth of the patients presented with rectal tumor, 42.89% with left colon and 33.41% of the cases were diagnosed at distant metastasis stage. The overall one-, three-, and five-year survival were 83, 65 and 52.0%, respectively. The five-year survival was 79.85% for localized stage, 63.25% for regional stage and 20.31% for distant metastasis. Multivariate analyses showed that age, diagnosis period, stage, nationality, basis of diagnosis, morphology and location of tumor were associated with survival. Conclusions Findings reveal poor survival compared to Surveillance, Epidemiology, and End Results (SEER) population. Diagnoses at late stage and no surgical and/or perioperative chemotherapy were associated with increased risk of death. Population-based screening in this population should be considered.

The Genes and Genetics of Malignant Melanoma

2002 ◽  
Vol 6 (3) ◽  
pp. 229-235 ◽  
Author(s):  
Peter Gibbs ◽  
Benjamin M. R. Brady ◽  
William A. Robinson
Keyword(s):  
High Risk ◽  
Sun Exposure ◽  
Population Based ◽  
Uv Exposure ◽  
Molecular Defect ◽  
Clinical Variables ◽  
Red Hair ◽  
Increased Risk ◽  
History Of ◽  
Self Examination

Background: Population-based studies have identified several clinical variables associated with an increased risk of developing cutaneous melanoma that include phenotype, amount of and response to sun exposure, and family history. However, these observations are of limited relevance to clinical practice as the risk associated with each factor is individually modest and the characteristics of these variables lack precision when applied to a particular individual. Objective: To review the literature regarding recent advances made in the understanding of the genes and genetics of clinical variables associated with an increased risk of melanoma. Conclusion: Variants of the MC1R (melanocortin-1 receptor) have been identified as major determinants of high-risk phenotypes, such as red hair and pale skin, and the ability to tan in response to UV exposure. Several studies also suggest that such variants may increase melanoma risk independent of their contribution to phenotype. A strong genetic basis for both nevus density and size has been demonstrated and the link between nevi and the development of MM has become better defined. Finally, germline defects in several genes involved in cell cycle regulation, namely, p16 and CDK4, have been demonstrated in many familial melanoma kindreds. This progress has introduced the prospect of genetic testing as a means of identifying a limited number of high-risk individuals who can be targeted with regular screening and education regarding UV exposure and skin self-examination. Ultimately, through rational genetic therapy targeted to correcting the underlying molecular defect, altering the natural history of melanoma development may be possible.

scholarly journals Clinical significance of cerebral microbleeds on MRI: A comprehensive meta-analysis of risk of intracerebral hemorrhage, ischemic stroke, mortality, and dementia in cohort studies (v1)

2018 ◽  
Vol 13 (5) ◽  
pp. 454-468 ◽  
Author(s):  
Andreas Charidimou ◽  
Sara Shams ◽  
Jose R Romero ◽  
Jie Ding ◽  
Roland Veltkamp ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
High Risk ◽  
Intracerebral Hemorrhage ◽  
Meta Analysis ◽  
Population Based ◽  
Cerebral Microbleeds ◽  
Clinical Settings ◽  
Memory Clinic ◽  
Increased Risk ◽  
Stroke Death

Background Cerebral microbleeds can confer a high risk of intracerebral hemorrhage, ischemic stroke, death and dementia, but estimated risks remain imprecise and often conflicting. We investigated the association between cerebral microbleeds presence and these outcomes in a large meta-analysis of all published cohorts including: ischemic stroke/TIA, memory clinic, “high risk” elderly populations, and healthy individuals in population-based studies. Methods Cohorts (with > 100 participants) that assessed cerebral microbleeds presence on MRI, with subsequent follow-up (≥3 months) were identified. The association between cerebral microbleeds and each of the outcomes (ischemic stroke, intracerebral hemorrhage, death, and dementia) was quantified using random effects models of (a) unadjusted crude odds ratios and (b) covariate-adjusted hazard rations. Results We identified 31 cohorts ( n = 20,368): 19 ischemic stroke/TIA ( n = 7672), 4 memory clinic ( n = 1957), 3 high risk elderly ( n = 1458) and 5 population-based cohorts ( n = 11,722). Cerebral microbleeds were associated with an increased risk of ischemic stroke (OR: 2.14; 95% CI: 1.58–2.89 and adj-HR: 2.09; 95% CI: 1.71–2.57), but the relative increase in future intracerebral hemorrhage risk was greater (OR: 4.65; 95% CI: 2.68–8.08 and adj-HR: 3.93; 95% CI: 2.71–5.69). Cerebral microbleeds were an independent predictor of all-cause mortality (adj-HR: 1.36; 95% CI: 1.24–1.48). In three population-based studies, cerebral microbleeds were independently associated with incident dementia (adj-HR: 1.35; 95% CI: 1.00–1.82). Results were overall consistent in analyses stratified by different populations, but with different degrees of heterogeneity. Conclusions Our meta-analysis shows that cerebral microbleeds predict an increased risk of stroke, death, and dementia and provides up-to-date effect sizes across different clinical settings. These pooled estimates can inform clinical decisions and trials, further supporting cerebral microbleeds role as biomarkers of underlying subclinical brain pathology in research and clinical settings.

scholarly journals Insulin enhances and metformin reduces risk of colorectal carcinoma in type-2 diabetes

QJM ◽  
2019 ◽  
Author(s):  
C-H Chen ◽  
C-L Lin ◽  
C-Y Hsu ◽  
C-H Kao
Keyword(s):  
Colorectal Cancer ◽  
Type 2 Diabetes ◽  
Cohort Study ◽  
Dietary Habits ◽  
Occult Blood ◽  
Population Based ◽  
Study Cohort ◽  
Urbanization Level ◽  
Increased Risk

Abstract Background Identifying colorectal cancer associated risks is important for conducting a program for the survey and prevention of colorectal cancer. Aim To investigate the association between use of insulin or metformin with colorectal cancer (CRC) in type 2 diabetes (T2DM). Design Population-based cohort study. Methods Through analysis of National Health Insurance (NHI) database between 1998 and 2010 in Taiwan, we identified 66 324 T2DM patients aged ≥ 20 years and selected subjects without diabetes by 1: 1 randomly matching with the study cohort based on age, sex and index date. We followed up the participants until 31 December 2011 or when they withdrew from the NHI program. Results Compared with non-diabetic subjects, the T2DM patients exhibited an increased risk of CRC [adjusted HR (aHR) = 1.56, 95% confidence interval (CI) = 1.39–1.75], after adjustment for age, sex, urbanization level, comorbidities and examinations of colonoscopy, sigmoidoscopy, or stool occult blood test. Among the T2DM patients, insulin usage increased the risk of CRC (aHR = 1.86, 95% CI = 1.58–0–2.19) after adjustment for age, sex, urbanization level, comorbidities, metformin usage and examinations; nevertheless, metformin decreased the risk of CRC (aHR = 0.65, 95% CI = 0.54–0.77) after adjustment for age, sex, urbanization level, comorbidities, insulin usage and examinations. Compared with the non-insulin cohort, the risk of CRC tended to increase with the incremental dosage of insulin exposure. Conclusion Our population-based cohort study demonstrated an association between T2DM and CRC. Among the T2DM patients, insulin use was associated with an increased risk of CRC and metformin use was associated with a decreased risk of CRC. Inability to obtain information on several potential confounding factors, such as lifestyle and dietary habits, is the major limitation of the study.

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