The underlying characteristics of sleep behavior and its relationship to sleep-related cognitions: a latent class analysis of college students in Wuhu city, China.

The aim of this study was to gain insight into the sleep quality of college students and related factors from a new perspective by using Latent Class Analysis (LCA). A total of 1,288 college students from four universities in Wuhu city participated in the study. LCA was used to identify the classes of sleep behaviors.

Association of Immune Factors with Drug-Resistant Tuberculosis: A Case-Control Study.

BACKGROUND Presently, studies of factors associated with drug-resistant tuberculosis (TB) focus on patients' socio-demographic characteristics and living habits, to the exclusion of biochemical indicators, especially immune factors. This study was carried out to determine whether immune factors are associated with drug-resistant TB. MATERIAL AND METHODS A total of 227 drug-resistant pulmonary TB patients and 225 drug-susceptible pulmonary TB patients were enrolled in this study.

[Effects of mitogen-activated protein kinases signaling pathway proteins on kidney injury in mice exposed subchronically to cadmium].

Objective: To explore the effects of mitogen activated protein kinase (MAPK) and extracellular signal-regulated kinases (ERK) on kidney injury in female BALB/c mice exposed to cadmium.

Method: Twenty-one female BALB/c mice were randomly divided into 3 groups, i.e.

PDTC attenuate LPS-induced kidney injury in systemic lupus erythematosus-prone MRL/lpr mice.

Lipopolysaccharide (LPS) from bacteria can accelerate and exacerbate lupus nephritis (LN) and induce infiltrating inflammatory cells in kidney in animal models. Pyrrolidine dithiocarbamate (PDTC) is known to exert anti-inflammatory effects. Monocyte chemoattractant protein-1(MCP-1) is upregulated by various stimuli, including LPS, high glucose, and hyperosmolality.

[Studying the lipid peroxidation index, morphology and apoptosis in testis of male BALB/c mice exposed to polybrominated diphenyl ether (BDE-209)].

Objective: To explore the lipid peroxidation and the testicular morphological change induced by decabrominated diphenyl ether (BDE-209) in male BALB/c mice.

Methods: Twenty one male BALB/c mice were randomly divided into three groups: the high exposure group (500 mg/kg BDE-209), the low exposure group (200 mg/kg BDE-20) and control group (normal saline). The mice were exposed by gavage one time a day for 6 weeks, then were sacrificed.

[Oxidative stress of decabromodiphenylether in mice brain tissue].

Objective: To study the oxidative stress induced by decabromodiphenylether (PBDE-209) in the cerebral cortex, hippocampus, cerebellum and striatum of mice.

Methods: Twenty-eight male BALB/c mice were randomized divided into four groups with seven mice in each: solvent control, blank control, low (200 mg/kg) and high (500 mg/kg) dose groups. Test substances were administered by gavage and mice were sacrificed 6 weeks after treatment.

[Effect of exposure to higher decabrominated diphenyl ether (PBDE-209) on learning and memory functions of BALB/c mice].

Objective: To investigate the effects of exposure to decabrominated diphenyl ether (PBDE-209) on learning and memory of BALB/c mice.

Methods: Eighteen female BALB/c mice were randomized divided into 3 groups and gavaged with peanut oil in the control groups and 300, 1500 mg x kg(-1)xd(-1) PBDE-209 in peanut oil daily in two exposed groups respectively for 4 weeks. The learning and memory ability of mice were tested by the Morris water maze and the shuttling box respectively.