SARS-CoV-2 virus associated angiotensin converting enzyme 2 expression modulation in colorectal cancer: Insights from mRNA and protein analysis COVID-19 associated (ACE2) expression in colorectal cancer

The SARS-CoV-2 virus gains entry into human cells by exploiting the angiotensin-converting enzyme 2 (ACE2), a key component known as the spike protein (S), as a point of entry. Initially, SARS-CoV-2 suppresses the natural function of ACE2, leading to a gradual decline in cell health. Additionally, individuals with cancer are considered more susceptible to COVID-19. This study investigates the expression patterns of ACE2 in colorectal cancer (CRC) patients with and without a history of COVID-19 infection. RT-PCR was used to analyze samples from both cancerous and adjacent non-affected colorectal tissues of 47 CRC patients, comprising two groups: 24 CRC patients with no history of COVID-19 and 23 CRC patients with a recent history of COVID-19 infection. Epithelial CR cells were isolated from both types of tissues and cultured to evaluate cell adhesion. Immunohistochemistry analyses were conducted to examine ACE2 protein expression using various ACE2 antibodies for both cell types. The study revealed ACE2 mRNA expression in all CRC tissues of patients with and without a history of COVID-19. ACE2 expression was significantly higher in CRC patients without a history of COVID-19. Notably, the non-affected colorectal cancer (NACRC) tissues of patients without a history of COVID-19 also showed ACE2 expression, whereas no ACE2 expression was detected in the biopsies of CRC patients with a positive COVID-19 history. ACE2 antibodies were employed to validate ACE2 protein expression at the mRNA level. COVID-19 appears to downregulate ACE2 expression in both CRC and NACRC tissues of CRC patients with a positive history of COVID-19 infection.

Effect of internet multiple linkage mode-based extended care combined with in-hospital comfort care on colorectal cancer patients undergoing colostomy

BACKGROUND

Patients with colorectal cancer may need postoperative nursing to improve prognosis, and conventional nursing is not effective. Clinical research is needed to explore nursing methods that can more effectively improve postoperative conditions on colorectal cancer patients undergoing colostomy.

AIM

To explore the effect of internet multiple linkage mode-based extended care combined with in-hospital comfort care on colorectal cancer patients undergoing colostomy.

METHODS

Data from 187 patients with colostomy treated in our hospital from May 2019 to March 2022 were collected and divided into three groups, A (n = 62), B (n = 62) and C (n = 63), according to different intervention methods. Group A received internet multiple linkage mode-based extended care combined with in-hospital comfort care. Group B received internet multiple linkage mode-based extended care. Group C received usual care intervention. Complications were compared among the three groups. The stoma self-efficacy scale, Hamilton Anxiety Scale, Hamilton Depression Scale, Brief Fatigue Inventory and City of Hope-quality of Life-ostomy Questionnaire before and after intervention were compared among the three groups.

RESULTS

The complication rate of group A, B and C (16.13%, 20.97% and 60.32%, respectively) was significantly different (all P < 0.05). The incidence of complications in groups A and B was lower than that in group C, and there was no significant difference between groups A and B (P > 0.05). After intervention, the scores of ostomy care, social contact, diet choice, confidence in maintaining vitality, confidence in self-care of ostomy, confidence in sexual life, confidence in sexual satisfaction and confidence in physical labor in the three groups were all higher than before intervention, and the scores of groups A and B were higher than those of group C, with statistical significance (P < 0.05). The Hamilton Anxiety Scale and Hamilton Depression Scale scores of the three groups after intervention were lower than those before intervention. The scores of groups A and B were lower than those of group C, and the score of group A was lower than that of group B, all with statistical significance (all P < 0.05). There was a statistically significant difference in cancer-induced fatigue among the three groups (P < 0.05). After intervention, the scores of physical health, psychological health, social health and mental health of the three groups were lower than before the intervention. The scores of group A and B were lower than that of group C; and the score of group A was lower than that of group B, all with statistical significance (all P < 0.05).

CONCLUSION

Internet multiple linkage mode-based extended care combined with in-hospital comfort care can effectively improve self-efficacy, bad mood, cancer-related fatigue and life quality of colorectal cancer patients undergoing colostomy.

Anatomical location, risk factors, and outcomes of lower gastrointestinal bleeding in colorectal cancer patients: a national inpatient sample analysis (2009-2019)

PURPOSE

This study aimed to investigate the incidence, predictors, and impact of lower gastrointestinal bleeding (LGIB) on inpatient mortality among colorectal cancer patients, due to its clinical significance and potential influence on patient outcomes.

METHODS

We conducted a retrospective analysis of data from the National Inpatient Sample database between 2009 and 2019, including 2,598,326 colorectal cancer patients with and without LGIB. Univariate and multivariate logistic regression analyses were performed to determine predictors of LGIB and its association with inpatient outcomes.

RESULTS

The highest incidence of LGIB was observed in rectal cancer patients (3.8%), followed by distal colon cancer patients (1.4%) and proximal colon cancer patients (1.2%). Several factors were significantly associated with LGIB, including older age; male sex; certain racial such as Black, Hispanic, and Asia/Pacific Islander patients; or lower socioeconomic status. Multivariate analysis identified independent predictors of LGIB, such as severe sepsis, use of anticoagulants, long-term use of aspirin or antiplatelet drugs, palliative care, malnutrition, cachexia, chemotherapy or immunotherapy, metastasis, alcohol abuse, hypertension, obesity, and family history of digestive cancer. No significant difference in inpatient mortality was observed between patients with and without LGIB.

CONCLUSION

Our study underscores the importance of considering colorectal cancer location and identified risk factors for LGIB assessment. Clinicians should address modifiable risk factors and healthcare disparities. Future research should explore underlying mechanisms, targeted interventions, and long-term outcomes beyond inpatient mortality.

Supportive care needs of patients with colorectal cancer undergoing anticancer therapy: A latent class analysis

Objective

This study was aimed at identifying the potential subgroups of supportive care needs among Chinese patients with colorectal cancer (CRC) through latent class analysis (LCA) and clarifying the characteristics of patients with high needs.

Methods

From January to September 2020, a cross-sectional survey was conducted in the Oncology Department and Radiotherapy Department of four tertiary grade A hospitals in Suzhou by using the general information questionnaire and Comprehensive Needs Assessment Tool for patients with cancer. Potential subgroups of supportive care needs were identified through LCA, and the association between the subgroups and statistical variables was analyzed with chi-square tests to clarify the demographic characteristics of the high-need group. This study was not registered.

Results

A total of 403 patients with CRC were included in the survey. LCA indicated two subgroups of supportive care needs in patients with CRC: a high-need group (51.86% of patients) and a low-need group (48.14% patients). In both groups, the probability of healthcare staff and information needs was high (> 50%). Single/divorced/widowed patients had greater supportive care needs than married patients, and patients with rectal cancer had greater supportive care needs than those with colon cancer.

Conclusions

Patients' healthcare staff and information needs are of critical importance. Focus should be placed on unmarried, patients with rectal cancer, as well as those receiving chemotherapy plus radiotherapy or palliative treatment.

Plasma endothelin-1 may predict bevacizumab-induced proteinuria in patients with colorectal cancer

PURPOSE

Proteinuria is one of the most common adverse events leading to the discontinuation of bevacizumab therapy. We analyzed plasma ET-1 levels as an indicator of renal endothelial dysfunction in colorectal cancer patients, to determine the utility of plasma ET-1 for identification of patients at high risk of proteinuria when treated with bevacizumab.

METHODS

Patients (n = 40) were recruited from an outpatient chemotherapy center between December 2020 and January 2022. Blood samples for plasma ET-1 levels were collected before treatment with bevacizumab (baseline), and after treatment for 3 and 6 months, and plasma ET-1 was determined by ELISA. Proteinuria was evaluated based on CTCAE v5.0 using urine protein-creatinine ratio instead of 24-h urine protein.

RESULTS

Plasma ET-1 levels at baseline were significantly higher in the group with grade ≥ 2 proteinuria than in the non-proteinuria group (p = 0.019). After adjusting for age, systolic and diastolic blood pressure, and hypertension following bevacizumab, plasma ET-1 levels at baseline were found to be an independent predictor of development of grade ≥ 2 proteinuria (OR = 17.8, 95% CI 1.42-223, and p = 0.026). Receiver operating characteristic curve analysis indicated an optimal cut-off value of the plasma ET-1 level of 1.19 pg/mL for predicting grade ≥ 2 proteinuria, with a sensitivity of 80.0% and specificity of 73.3%.

CONCLUSION

In conclusion, higher plasma ET-1 levels before treatment might increase the risk of proteinuria in colorectal cancer patients treated with bevacizumab. This might have important implications in the early detection of the risk of proteinuria.

Nutrition-wide association study of microbiome diversity and composition in colorectal cancer patients

BACKGROUND

The effects of diet on the interaction between microbes and host health have been widely studied. However, its effects on the gut microbiota of patients with colorectal cancer (CRC) have not been elucidated. This study aimed to investigate the association between diet and the overall diversity and different taxa levels of the gut microbiota in CRC patients via the nutrition-wide association approach.

METHODS

This hospital-based study utilized data of 115 CRC patients who underwent CRC surgery in Department of Surgery, Seoul National University Hospital. Spearman correlation analyses were conducted for 216 dietary features and three alpha-diversity indices, Firmicutes/Bacteroidetes ratio, and relative abundance of 439 gut microbial taxonomy. To identify main enterotypes of the gut microbiota, we performed the principal coordinate analysis based on the β-diversity index. Finally, we performed linear regression to examine the association between dietary intake and main microbiome features, and linear discriminant analysis effect size (LEfSe) to identify bacterial taxa phylogenetically enriched in the low and high diet consumption groups.

RESULTS

Several bacteria were enriched in patients with higher consumption of mature pumpkin/pumpkin juice (ρ, 0.31 to 0.41) but lower intake of eggs (ρ, -0.32 to -0.26). We observed negative correlations between Bacteroides fragilis abundance and intake of pork (belly), beef soup with vegetables, animal fat, and fatty acids (ρ, -0.34 to -0.27); an inverse correlation was also observed between Clostridium symbiosum abundance and intake of some fatty acids, amines, and amino acids (ρ, -0.30 to -0.24). Furthermore, high intake of seaweed was associated with a 6% (95% CI, 2% to 11%) and 7% (95% CI, 2% to 11%) lower abundance of Rikenellaceae and Alistipes, respectively, whereas overall beverage consumption was associated with an 10% (95% CI, 2% to 18%) higher abundance of Bacteroidetes, Bacteroidia, and Bacteroidales, compared to that in the low intake group. LEfSe analysis identified phylogenetically enriched taxa associated with the intake of sugars and sweets, legumes, mushrooms, eggs, oils and fats, plant fat, carbohydrates, and monounsaturated fatty acids.

CONCLUSIONS

Our data elucidates the diet-microbe interactions in CRC patients. Additional research is needed to understand the significance of these results in CRC prognosis.

Diet quality indices and dietary patterns are associated with plasma metabolites in colorectal cancer patients

PURPOSE

Emerging evidence suggests that diet is linked to survival in colorectal cancer patients, although underlying mechanisms are not fully understood. The aim of this study was to evaluate whether dietary exposures are associated with metabolite concentrations in colorectal cancer patients.

METHODS

Concentrations of 134 metabolites of the Biocrates AbsoluteIDQ p180 kit were quantified in plasma samples collected at diagnosis from 195 stage I-IV colorectal cancer patients. Food frequency questionnaires were used to calculate adherence to the World Cancer Research Fund (WCRF) dietary recommendations and the Dutch Healthy Diet (DHD15) index as well as to construct dietary patterns using Principal Component Analysis. Multivariable linear regression models were used to determine associations between dietary exposures and metabolite concentrations. All models were adjusted for age, sex, body mass index, smoking status, analytical batch, cancer stage, and multiple testing using false discovery rate.

RESULTS

Participants had a mean (SD) age of 66 (9) years, were mostly men (60%), and mostly diagnosed with stage II and III cancer. For the dietary pattern analyses, Western, Carnivore, and Prudent patterns were identified. Better adherence to the WCRF dietary recommendations was associated with lower concentrations of ten phosphatidylcholines. Higher intake of the Carnivore pattern was associated with higher concentrations of two phosphatidylcholines. The DHD15-index, Western pattern, or Prudent pattern were not associated with metabolite concentrations.

CONCLUSION

In the current study, the WCRF dietary score and the Carnivore pattern are associated with phosphatidylcholines. Future research should elucidate the potential relevance of phosphatidylcholine metabolism in the colorectal cancer continuum.

CLINICAL TRIAL REGISTRY

ClinicalTrials.gov Identifier: NCT03191110.

Validation of nutritional risk index method against patient-generated subjective global assessment in screening malnutrition in colorectal cancer patients

OBJECTIVE

To validate malnutrition screening tool of nutrition risk index (NRI) against patient-generated subjective global assessment (PG-SGA) as a gold standard tool in colorectal cancer patients before radiotherapy.

METHODS

Nutritional status of 52 volunteer colorectal cancer patients with a mean age of 54.1±16.8 years who referred to radiotherapy center were assessed by PG-SGA (gold standard method) and NRI. Serum albumin levels of patients were determined by colorimetric method. A contingency table was used to determine the sensitivity, specificity, and predictive value of the NRI in screening patients at risk of malnutrition, in comparison with the PG-SGA in patients before radiotherapy.

RESULTS

The findings of PG-SGA and NRI showed that 52% and 45% of patients in our study were moderately or severely malnourished respectively. The NRI had a sensitivity of 66% and a specificity of 60% against PG-SGA. The positive predictive value was 64% and the negative predicative value was 62%. The agreement between NRI and PG-SGA was statistically insignificant (kappa =0.267; P>0.05).

CONCLUSIONS

The findings of present study showed that the prevalence of malnutrition was high in patients with colorectal cancer. Moreover, NRI method had low sensitivity and specificity in assessing nutritional status of patients with cancer. It seems that the combination of anthropometric, laboratory parameters and a subjective scoring system may be helpful tools in screening of malnutrition in cancer patients.

The association of resilience and age in individuals with colorectal cancer: an exploratory cross-sectional study

BACKGROUND

Studies generally report lower emotional distress in older patients with cancer than in younger patients with cancer. The personality construct of resilience was previously found to be higher with age, but has not been assessed in relation to emotional distress in older patients with cancer.

OBJECTIVE

To assess the mediating effect of resilience on the associations between age and emotional distress in patients with colorectal cancer (CRC).

PATIENTS AND METHODS

An exploratory cross-sectional study of 92 individuals, aged 27-87 years, diagnosed with CRC stage II-III, 1-5 years prior to enrollment in the study. They completed the Wagnild and Young's resilience scale and Brief Symptoms Inventory-18, cancer-related problem list, and demographic and disease-related details.

RESULTS

Older age, male gender, and less cancer-related problems were associated with higher resilience and lower emotional distress. A Structural Equation Modeling (SEM) analysis and mediation tests showed that, while controlling for cancer-related problems, resilience mediated the effects of age and gender on emotional distress.

CONCLUSIONS

The study enlarges the explanation for the consistent previous findings on the better adjustment of older patients with cancer. Increased professional support should be provided for patients with low resilience levels.