Induced skin aging by blue-light irradiation in human skin fibroblasts via TGF-β, JNK and EGFR pathways.

Background: Studies indicate that blue light (BL) irradiation can damage human skins, but the impact of BL irradiation on skin aging is unknown.

Objectives: This study aimed to give an insight to phenotypic characteristics and molecular mechanism of blue light-induced skin aging, and thus provide a theoretical basis for the precise protection of photodermatosis.

Methods: The effect of BL on skin photoaging in mice was evaluated by non-invasive measurement equipment and histopathology analysis.

Intestinal tract and parenteral multi-organ sequential pathological injury caused by necrotizing enterocolitis.

Background: To explore the relationship between the pathological changes of the colon, terminal ileum, lung, liver and kidney, and the changes of Bax, PCNA and PAF in a rat model of NEC.

Methods: One hundred and forty neonatal SD rats were randomly divided into NEC group and control group (70 in each group). NEC group was given hypoxia, cold stimulation and artificial feeding twice a day for 3 consecutive days.

[Prevalence and Metabolic Abnormalities of Fatty Liver Disease among Adults in Mianyang City,Sichuan Province].

Objective To understand the prevalence and metabolic abnormalities of fatty liver disease among adults in Mianyang City,Sichuan Province,and to analyze their influencing factors.Methods Totally 294 603 adults aged 18 years and older were enrolled by using a multi-stage stratified random sampling method in Mianyang City from November 1,2014 to September 30,2015.Fatty liver was diagnosed by abdominal ultrasound.

[Serum metabolomics of preterm and full-term infants based on gas chromatography-mass spectrometry].

Objective: To study the features of serum metabolites in preterm infants based on gas chromatography-mass spectrometry (GC-MS), and to find differentially expressed metabolites in the serum of preterm infants.

Methods: Serum samples were collected from 19 preterm infants and 20 full-term infants before feeding. GC-MS was used to measure metabolic profiles, and the metabolic features of 397 serum metabolites in preterm infants were analyzed.

[Awareness of Acquired Immune Deficiency Syndrome and Its Influencial Factors among College Students in Universities Implementing "Red Ribbon in Colleges" Event across China].

Objective To investigate the college students'awareness of acquired immune deficiency syndrome (AIDS) and its influencial factors in universities implementing "Red Ribbon in Colleges" event.Methods A multistage random sampling method was used to select 2057 students from 8 universities. Among them,1977 students were surveyed by quantitative questionnaires and 80 students were interviewed qualitatively.

[Prevalence of HBsAg Positive and HBsAb Negative Populations in Rural Mianyang].

Objective: To determine the prevalence of positive HBsAg and negative HBsAg populations in rural Mianyang, and provide evidence support for proper immunization strategies.

Methods: A questionnaire survey was conducted on 163 797 rural residents in Mianyang selected through a multistage random sampling strategy. Serum samples were taken from the participants to detect HBsAg and HBsAb with enzyme-linked immunosorbent assay (ELISA).