Arsenic exposure analysis for children living in central China: From ingestion exposure to biomarkers.

Emerging evidence indicates that chronic low-dose arsenic (As) exposure can pose adverse health effects to children. This study aimed to systematically study the exposure risk induced by As ingestion in children living in Hubei Province, central China. The feasibility of first morning spot urine instead of 24-h urine as an environmental exposure biomarker was also explored.

A soil ingestion pilot study for teenage children in China.

Soil ingestion by people is an important route of exposure to environmental contaminants. Studies on soil ingestion using tracer mass-balance method are mainly for young children and adults, scarcely for teenagers. In such case, the soil ingestion rate for teenagers recommended by regulators is generally identical to that of adults based on one activity pattern modeling study.

Genomic insights into the pathogenicity and environmental adaptability of Enterococcus hirae R17 isolated from pork offered for retail sale.

Genetic information about Enterococcus hirae is limited, a feature that has compromised our understanding of these clinically challenging bacteria. In this study, comparative analysis was performed of E. hirae R17, a daptomycin-resistant strain isolated from pork purchased from a retail market in Beijing, China, and three other enterococcal genomes (Enterococcus faecium DO, Enterococcus faecalis V583, and E.

Estimates of Soil Ingestion in a Population of Chinese Children.

Background: China's soil pollution poses serious health risks. However, data regarding the soil ingestion rate (SIR) of the Chinese population, which is critical to assessing associated health risks, are lacking.

Objectives: We estimated soil ingestion of 177 Chinese children from Guangdong, Hubei, and Gansu Provinces.

[Seroepidemiology investigation of HEV71 in healthy children of 1-6 years old in three counties of China in 2005].

Objectives: To investigate human enterovirus 71(HEV71) antibody levels among children in China in recent years, to find the epidemic status of hand, foot and mouth diseases (HFMD) in children, and to provide a scientific base for the HFMD prevention and control.

Methods: 371 sera specimens were colleted from 371 children of 1-6 years old in 3 counties of 3 provinces in 2005. All sera proposed to be detected for measles antibodies investigation.

[Benzo (a) pyrene induces quiescent diploid human embryonic lung fibroblast cells undergoing a reversible G1 arrest].

Objective: To study the influence of Benzo (a) pyrene on cell cycle distribution of quiescent diploid human embryonic lung fibroblast (HELF) cells.

Methods: HELF cells were synchronized at G0 phase of cell cycle by 0.5% serum starvation for 48 hours and identified by flow cytometry (FCM).

[SARS epidemic trends in Beijing since late April 2003].

Since May 8th, Beijing's severe acute respiratory syndrome (SARS) epidemic is on a continuous decline. Indicating and verifying measures taken since the end of April to be effective. Three stages of SARS have been distinguished in Beijing since late April, they are described in this article as rapid growth stage beginning late April until early May, decline and stable stage throughout the first week of May, and rapid decline stage since May 9th until present.