scholarly journals Study on the Relationship between Manganese Concentrations in Rural Drinking Water and Incidence and Mortality Caused by Cancer in Huai’an City

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Qin Zhang ◽  
Enchun Pan ◽  
Linfei Liu ◽  
Wei Hu ◽  
Yuan He ◽  
...  
Keyword(s):  
Drinking Water ◽  
Cancer Incidence ◽  
Shallow Groundwater ◽  
High Flow ◽  
Low Flow ◽  
Deep Groundwater ◽  
Incidence And Mortality ◽  
The Relationship ◽  
Mn Concentration ◽  
Mn Concentrations

Background. Cancer is a significant disease burden in the world. Many studies showed that heavy metals or their compounds had connection with cancer. But the data conflicting about the relationship of manganese (Mn) to cancer are not enough. In this paper, the relationship was discussed between Mn concentrations in drinking water for rural residents and incidence and mortality caused by malignant tumors in Huai’an city.Methods. A total of 158 water samples from 28 villages of 14 towns were, respectively, collected during periods of high flow and low flow in 3 counties of Huai’an city, along Chinese Huai’he River. The samples of deep groundwater, shallow groundwater, and surface water were simultaneously collected in all selected villages. Mn concentrations in all water samples were determined by inductively coupled plasma-mass spectrometry (ICP-MS 7500a). The correlation analysis was used to study the relationship between the Mn concentration and cancer incidence and mortality.Results. Mn concentrations detectable rate was 100% in all water samples. The mean concentration was 452.32 μg/L ± 507.76 μg/L. There was significant difference between the high flow period and low flow period (t=-5.23,P<0.05) and also among deep groundwater, shallow groundwater, and surface water (F=5.02,P<0.05). The ratio of superscale of Mn was 75.32%. There was significant difference of Mn level between samples in the high flow period and low flow period (χ2=45.62, P<0.05) and also among deep groundwater, shallow groundwater, and surface water (χ2=10.66,P<0.05). And also we found that, during the low flow period, Mn concentration has positive correlation with cancer incidence and mortality; for a 1 μg/L increase in Mn concentration, there was a corresponding increase of 0.45/100000 new cancer cases and 0.35/100000 cancer deaths (P<0.05).Conclusions. In Huai’an city, the mean concentration of Mn in drinking water was very high. Mn concentration correlated with cancer incidence and mortality.

Groundwater recharge in an endoreic basin with reclaimed municipal wastewater

2007 ◽  
Vol 55 (1-2) ◽  
pp. 449-457 ◽  
Author(s):  
G. De Feo ◽  
M. Galasso ◽  
V. Belgiorno
Keyword(s):  
Drinking Water ◽  
Water Table ◽  
Municipal Wastewater ◽  
Karst Aquifer ◽  
Wastewater Reuse ◽  
Shallow Groundwater ◽  
Agricultural Practice ◽  
Reclaimed Wastewater ◽  
Research Activity ◽  
Deep Groundwater

The aim of this paper was to evaluate the groundwater pollution in an endoreic basin in southern Italy. The aquifer circulation was carried out on two different levels: a shallow groundwater, with a water table of about 10 m, and a deep groundwater in a karst aquifer, with a water table of 140–190 m. Reclaimed municipal wastewater and superficial water collected in the catchment area were both drained in a swallow hole linked with the deep groundwater. The agricultural practice conducted in the endoreic basin produced an excess of nitrate in the soil. Nitrate was subsequently washed out and displaced in the groundwater. With regard to the EU Drinking Water Directive (98/83/EC), the research activity conducted during 2003 showed the absence of pollution in the deep groundwater used for drinking water supply. The shallow groundwater, instead, was strongly influenced by agricultural and pasture activities, with detectable levels of nitrates and bacteria. In order to reduce the load of pollution entering the swallow hole and then in the deep groundwater, the realisation of a constructed wetland plant was proposed to improve the quality of reclaimed wastewater, as well as to pursue the wastewater reuse in agriculture.

Socioeconomic Disparities in Cancer Incidence and Mortality

2017 ◽  
Author(s):  
Candyce Kroenke ◽  
Ichiro Kawachi
Keyword(s):  
Health Outcomes ◽  
Cancer Incidence ◽  
Sociodemographic Factors ◽  
Cancer Type ◽  
Socioeconomically Disadvantaged ◽  
The Past ◽  
Socioeconomic Gradient ◽  
Incidence And Mortality ◽  
Risk Of Cancer ◽  
The Relationship

The relationship between socioeconomic status (SES) and cancer is complex, dynamic, and evolving. Associations depend on SES measures, cancer type, sociodemographic factors including race/ethnicity, and historical trends. However, socioeconomic disadvantage is often associated with a higher risk of cancer, particularly cancers diagnosed at a late stage, as well as worse prognosis once diagnosed. Research on secular trends over the past 70 years has shown reversals of the socioeconomic gradient for lung and colorectal cancer consistent with differential trends by SES in patterns of smoking, diet, and obesity. Rates of these cancers are now currently higher in socioeconomically disadvantaged groups. SES is considered to be a “fundamental” determinant of health outcomes, and this appears true throughout the cancer spectrum—from cancer incidence to detection, treatment, and survival. Investigations over the past decade have increasingly considered the simultaneous impact of individual SES and area-level SES (as a contextual influence) on health outcomes.

scholarly journals The relationship between exposure to particulate matter and breast cancer incidence and mortality

Medicine ◽  
2019 ◽  
Vol 98 (50) ◽  
pp. e18349 ◽  
Author(s):  
Zhe Zhang ◽  
Wenting Yan ◽  
Qing Chen ◽  
Niya Zhou ◽  
Yan Xu
Keyword(s):  
Breast Cancer ◽  
Particulate Matter ◽  
Cancer Incidence ◽  
Breast Cancer Incidence ◽  
Incidence And Mortality ◽  
The Relationship

scholarly journals Relationship between Concentration Difference of Different Density Lipoproteins and Shear Stress in Atherosclerosis

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Wei Meng ◽  
Fengxu Yu ◽  
Huaiqing Chen ◽  
Jianmin Zhang ◽  
Eryong Zhang ◽  
...  
Keyword(s):  
Shear Stress ◽  
Concentration Polarization ◽  
Carotid Bifurcation ◽  
High Flow ◽  
Arterial System ◽  
Low Flow ◽  
Wall Surface ◽  
Concentration Difference ◽  
Recirculation System ◽  
The Relationship

Previous research has observed concentration polarization in LDL and HDL in the arterial system. However, there is no report that links this concentration polarization to the development of vascular atherosclerosis (AS). Therefore, the purpose of this study is to establish the relationship between concentration difference of LDL and HDL and shear stress using a carotid bifurcation vascular model. PTFE was employed to create the carotid bifurcation model. Endothelial cells were coated on the inner wall of the graft. In a recirculation system, HDL and LDL concentration were measured under two different ICA flow velocities at 5 different locations within our model. We report the following: (1) LDL and HDL concentration difference was observed in both high flow and low flow environments; (2) the degree of LDL and HDL concentration polarization varied depending of high flow and low flow environment; (3) absolute values of concentration difference between LDL and HDL at the inner wall surface decreased with the increase in shear stress when shear stress was more than 1.5 Pa. This variation trend would be more pronounced if shear stress were less than 0.5 Pa. Our study suggests that under the action of shear stress, concentration differences of LDL or HDL create a disturbance in the balance of atherogenic factors and anti-As factors, resulting in the occurrence of AS.

Sign in / Sign up

Export Citation Format

Share Document