Arsenic and benzoapyrene co-exposure acts synergistically in inducing cancer stem cell-like property and tumorigenesis by epigenetically down-regulating SOCS3 expression.
In this study we investigate the combined tumorigenic effect of arsenic and BaP co-exposure and the mechanism using both cell culture and mouse models. It was found that arsenic (sodium arsenite, 1.0 µM) and BaP (2.5 µM) co-exposure for 30 weeks synergizes in inducing malignant transformation of immortalized non-tumorigenic human bronchial epithelial cells and cancer stem cell (CSC)-like property to enhance their tumorigenicity. In animal studies, A/J mice were exposed to arsenic in drinking water (sodium arsenite, 20 ppm) starting from gestation day 18. After birth, the dams continuously received arsenic water throughout lactation. At weaning (3 weeks of age), male offspring were exposed to either arsenic alone via drinking the same arsenic water or exposed to arsenic plus BaP. BaP was administered via oral gavage (3 µmol per mouse per week) once a week starting from 3 weeks of age for 8 weeks. All mice were euthanized 34-weeks after the first BaP exposure. It was found that mice in control and arsenic exposure alone group did not develop lung tumors. All mice in BaP exposure alone group developed lung adenomas. However, arsenic and BaP co-exposure synergized in increasing lung tumor multiplicity and tumor burden. Furthermore, 30% of mice in arsenic and BaP co-exposure group also developed lung adenocarcinomas. Mechanistic studies revealed that arsenic and BaP co-exposure does not produce more BPDE-DNA adducts than Ba...
CONCLUSIONS: The present study provides substantial evidence that a higher concentration of circulating vitamin D would have conferred protection against liver cancer. PMID: 32229457 [PubMed - in process]
Abstract BACKGROUND AND OBJECTIVES: To evaluate the association between dietary diversity and all-cause mortality in older adults. METHODS AND STUDY DESIGN: 17,949 community-based elderly participants aged ≥65 years in China were included in this cohort study. The baseline consumption frequencies of nine food groups (meat, vegetables, fish, eggs, fruits, legumes, milk, tea, and nuts) were recorded, and the dietary diversity score (0-9) was calculated. Survival status and death date were collected during follow-up. Cox proportional-hazards models were used to assess the association between dietary diversity...
This study is to evaluate the associations of systolic and diastolic blood pressure (SBP and DBP, respectively) with estimated urinary sodium excretion (eUNaE), estimated urinary potassium excretion (eUKE) and their ratio (Na/K ratio) among hypertensive, normotensive, and hypotensive Chinese individuals. METHODS AND STUDY DESIGN: A large institution-based cross-sectional study was conducted at the Third Xiangya Hospital, Changsha between August 2017 and November 2018. Spot urine samples were collected to test urinary sodium, potassium, and creatinine excretions for each participant. The Kawasaki formula was used to es...
CONCLUSIONS: EN, especially oral nutritional supplements, has a positive economic impact on patients with gastrointestinal cancer, based on reductions in the post-operative infection rate, length of hospitalization, and hospitalization expenditure. PMID: 32229446 [PubMed - in process]
CONCLUSIONS This study offers a novel 2-gene signature to predict overall survival of patients with HCC, which has the potential to be used as an independent prognostic predictor. Overall, this study reveals more details about the tumor microenvironment in HCC and offers novel candidate biomarkers. PMID: 32231177 [PubMed - in process]
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Learn more about the percutaneous procedures that may help improve the quality of life of patients with terminal cancer.Chinese Clinical Oncology
Colorectal cancer screening remains below the national target. Which specific populations are most up-to-date with CRC screening, and which are lagging behind?Morbidity &Mortality Weekly Report
Could DNA methylation levels be predictive of breast cancer risk?Journal of the National Cancer Institute