Relationship between acne and psychological burden evaluated by ASLEC and HADS surveys in high school and college students from central China.

Previously, acne and its effects on psychological well-being have mostly been studied unilaterally in the western population. This study was aimed to investigate bidirectional relationship between acne and stress using Adolescent Self-Rating Life Events Check (ASLEC) and Hospital Anxiety and Depression Scale (HADS) surveys from inhabitants of central China. An on-line survey of 2,284 high school and college students from central China was conducted using three questionnaires posted on Chinese professional survey website, the Questionnaire Web.

Ventilator-associated pneumonia in intensive care units in Hubei Province, China: a multicentre prospective cohort survey.

A multicentre prospective cohort study was performed in 17 intensive care units (ICUs) in tertiary care hospitals in Hubei Province, China. Ventilator-associated pneumonia (VAP) was defined according to modified criteria from the published literature. Among 4155 ventilated patients, the crude incidence and incidence rate of VAP were 20.

[Effect of selenium and arsenic on oxidative stress, DNA oxidative damage and repair in HepG2 cells].

Objective: To study alone and combined effect of selenium and arsenic on oxidative stress, DNA oxidative damage and repair.

Methods: HepG2 cells were treated with selenium (2.5, 5.

[Oxidative stress of human derived fetal hepatocytes induced by product of chlorinated drinking water (MX)].

Objective: To study the oxidative stress induced by 3-chloro-4-( dichloromethyl)-5-hydroxy-2 [5H]-furanone (MX) (a product of chlorinated drinking water) in human derived fetal hepatocytes (L-02) in vitro.

Methods: L-02 cells were treated at the doses of 10, 30, 100 and 300 micromol/L of MX for 24h. Malondialdehyde (MDA), reduced glutathione (GSH) and 8-hydroxydeoxyguanosine (8-OHdG), the representative of antioxidative molecules and the marker of DNA oxidative damage respectively, were detected in L-02 cell treated by MX.

[Effect of polychlorinated biphenyls on DNA damage induced by benzo[a]pyrene in HepG2 cells].

Objective: To explore effects of polychlorinated biphenyl, PCB153 on DNA damage induced by benzo(a) pyrene (B[a]P) in HepG2 cells.

Methods: As target cell, HepG2 cells were treated at the concentrations of 0.1, 1, 10 and 100 micromol/L with PCB153 and at the concentrations of 12.

[Enhancement effect of polychlorinated biphenyl on benzo (a) pyrene-induced DNA damage in HepG2 cells].

Objective: To study the effect of polychlorinated biphenyl, Aroclor1254 on benzo (a) pyrene [B (a) P]-induced DNA damage in HepG2 cells.

Methods: HepG2 cells were pretreated with Aroclor1254 (11.5, 23 and 46 micromol/L) for 24 hours and then exposed to B (a) P (50 micromol/L).