Green tea consumption and risk for esophageal cancer: A systematic review and dose-response meta-analysis

Zhao, Huilei; Mei, Kaibo; Yang, Lun; Liu, Xiao; Xie, Lixia

doi:10.1016/j.nut.2021.111197

Cited by 12 publications

(6 citation statements)

References 35 publications

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“…If the liver fibrosis score was not directly reported or reported in ranges, we estimated the midpoint of each category by averaging the lower and upper boundaries of that category [ 24 , 25 ]. If the highest or lowest class was open-ended, we assumed that the open-ended interval length was the same as the adjacent interval [ 26 ]. In this study, the OR and HR were equally treated as RR according to our previous articles [ 22 ].…”

Section: Methodsmentioning

confidence: 99%

Liver Fibrosis Scores and Hospitalization, Mechanical Ventilation, Severity, and Death in Patients with COVID-19: A Systematic Review and Dose-Response Meta-Analysis

Liu

Mei²,

Tan

et al. 2022

Canadian Journal of Gastroenterology and Hepatology

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Background and Aim. The relationship between liver fibrosis scores and clinical outcomes in patients with COVID-19 is not compressively assessed. Methods. We identified relevant cohort studies that assessed the relationship between liver fibrosis scores (e.g., FIB-4, NAFLD fibrosis score (NFS), and aspartate aminotransferase to platelet ratio index (APRI)) and associated prognosis outcomes by searching the PubMed, EMBASE, and medRxiv databases. The potential dose-response effect was performed using a stage robust error meta-regression. Results. Sixteen studies with 8,736 hospitalized patients with COVID-19 were included. One-point score in FIB-4 increase was significantly associated with increased mechanical ventilation (RR: 2.23, 95% CI: 1.37–3.65, P = 0.001 ), severe COVID-19 (RR: 1.82, 95% CI: 1.53–2.16, P < 0.001 ), and death (RR: 1.47, 95% CI: 1.31–1.65, P < 0.001 ), rather than hospitalization (RR: 1.35, 95% CI: 0.72–2.56, P = 0.35 ). Furthermore, there is a significant positive linear relationship between FIB-4 and severe COVID-19 ( P nonlinearity = 0.12 ) and mortality ( P nonlinearity = 0.18 ). Regarding other liver scores, one unit elevation in APRI increased the risk of death by 178% (RR: 2.78, 95% CI: 1.10–6.99, P = 0.03 ). Higher NFS (≥−1.5) and Forns index were associated with increased risk of severe COVID-19 and COVID-19-associated death. Conclusion. Our dose-response meta-analysis suggests high liver fibrosis scores are associated with worse prognosis in patients with COVID-19. For patients with COVID-19 at admission, especially for those with coexisting chronic liver diseases, assessment of liver fibrosis scores might be useful for identifying high risk of developing severe COVID-19 cases and worse outcomes.

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Section: Methodsmentioning

confidence: 99%

Liver Fibrosis Scores and Hospitalization, Mechanical Ventilation, Severity, and Death in Patients with COVID-19: A Systematic Review and Dose-Response Meta-Analysis

Liu

Mei²,

Tan

et al. 2022

Canadian Journal of Gastroenterology and Hepatology

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“…The inclusion criteria included ( Sung et al, 2021 ) studies that involved patients who had irregular diet ( Zhao et al, 2021 ); research on associations between irregular diet and the risk of EC ( Pan et al, 2019 ); hazard ratio (HR), odds ratio (OR), standardized incidence/hospitalization ratio (SIR/SHR), incidence rate ratio (IRR), and 95% confidence intervals (CIs) in the study were reported or could be calculated; and ( Xie et al, 2020 ) case control studies or cohort studies.…”

Section: Methodsmentioning

confidence: 99%

“…The exclusion criteria included ( Sung et al, 2021 ) reviews and comments ( Zhao et al, 2021 ); no HR, OR, IRR, or SIR/SHR provided ( Pan et al, 2019 ); study investigated relationships between irregular diet and cancer, but not EC specifically; and ( Xie et al, 2020 ) the study investigated relationships between dietary habits and cancer, but did not include irregular diet.…”

Section: Methodsmentioning

confidence: 99%

“…Genetic, environmental, and reproductive factors are currently believed to be associated with the pathogenesis of EC. Dietary factors such as irregular diet are also associated with EC incidence ( Pan et al, 2019 ; Zhao et al, 2021 ). Irregular diet is when natural food intake patterns are disrupted and can include number of eating episodes, night-time fasting duration and time of first and last eating episodes ( Srour et al, 2018 ; Xie et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Relationship between irregular diet and risk of esophageal cancer: A meta-analysis

et al. 2022

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Background: Associations between irregular diet and the risk of esophageal cancer remain unclear. The current meta-analysis was performed to determine whether the presence of irregular diet increases the risk of esophageal cancer.Methods: The data from PubMed, Cochrane Libraries, and Embase up to 23 January 2022 were included in our analysis to identify studies that investigated associations between irregular diet and the risk of esophageal cancer. Summary relative risk (RR) and 95% confidence intervals (CIs) were calculated using a random-effects model.Results: Five cohort studies and one case-control study investigating associations between irregular diet and the risk of esophageal cancer were included. None of the articles demonstrated publication bias. The summary RR was 4.181 (95% CI 2.196–7.960, I2 = 66.1%, p = 0.011). In the subgroup analysis, we found significant heterogeneity in the Non-disease-causing group, nurse group and Asian group. The above three that produce heterogeneity may be the source of heterogeneity in the results of this study.Conclusion: The current meta-analysis indicates that irregular diet increase the risk of esophageal cancer.Trial registration: (https://www.crd.york.ac.uk/prospero/), (PROSPERO, CRD42022306407)

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“…In the subgroup analysis, the OR was 0.79 in women (95% CI = 0.68-0.91). Therefore, green tea has a protective effect in women [59].…”

Section: Epidemiological Studies On the Anticancer Effects Of Green Teamentioning

confidence: 98%

Health Effects of Soy Isoflavones and Green Tea Catechins on Cancer and Cardiovascular Diseases Based on Urinary Biomarker Levels

et al. 2022

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Plant polyphenols have various health effects. Genistein, which is abundant in soybeans, and epigallocatechin-3-gallate, which is abundant in green tea, are major flavonoids, a subclass group of polyphenols. Several epidemiological studies have shown that these flavonoids have beneficial effects against cancer and cardiovascular diseases. However, other studies did not show such effects. Several confounding factors, including recall bias, are related to these inconsistent findings, and the determination of metabolites in the urine may be useful in reducing the number of confounding factors. Equipment, which can be used by research participants to collect samples from a portion of voided urine within 24 h without the help of medical workers, has been developed for epidemiological investigations. Previous studies, in which flavonoid metabolites in these urine samples were measured, revealed that soy intake was correlated with a reduced risk of certain types of cancer and cardiovascular diseases worldwide. Although soybeans and green tea consumption may have protective effects against cancer and cardiovascular diseases, further clinical studies that consider different confounding factors are required to provide evidence for the actual impact of dietary flavonoids on human diseases, including cancer and cardiovascular diseases. One possible mechanism involved is discussed in relation to the downregulation of reactive oxygen species and the upregulation of 5′-adenosine monophosphate-activated protein kinase elicited by these flavonoids.

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Green tea consumption and risk for esophageal cancer: A systematic review and dose-response meta-analysis

Cited by 12 publications

References 35 publications

Liver Fibrosis Scores and Hospitalization, Mechanical Ventilation, Severity, and Death in Patients with COVID-19: A Systematic Review and Dose-Response Meta-Analysis

Liver Fibrosis Scores and Hospitalization, Mechanical Ventilation, Severity, and Death in Patients with COVID-19: A Systematic Review and Dose-Response Meta-Analysis

Relationship between irregular diet and risk of esophageal cancer: A meta-analysis

Health Effects of Soy Isoflavones and Green Tea Catechins on Cancer and Cardiovascular Diseases Based on Urinary Biomarker Levels

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