Background Flickering light is different from the normal light environment.Animal experiment proved that flickering light can induce myopia.But its mechanism remains unclear.Objective This study was to investigate the expression of c-fos gene in retina of myopic C57BL/6J mice induced by flickering light and monocular form deprivation.Methods Ninety clean C57BL/6J mice aged 28-day-old with the similar refraction in both eyes were randomly assigned to five groups.Fifteen mice in the control group were exposed to continuous white light environment.The white flickering light with the frequency of 10,5,2 Hz were used to irradiate the mice respectively in high frequency flickering group (15 mice),moderate frequency flickering group (15 mice) and low frequency flickering group (15 mice),respectively.The right eyes of other 30 mice were monocularly occluded with a semitransparent hemispherical thin plastic shell to establish the form deprivation models and then were exposed to white light environment.The diopter and ocular axial length were measured by murine-specific eccentric infrared photorefraction and A-scan ultrasonography before experiment and two weeks after the treatments.At the end of experiment,the mice were sacrificed by neck dislocation.Mice eyes were enucleated and retinal samples were prepared for the detect of c-fos protein and its mRNA by immunohistochemistry,Western blot and reverse transcription polymerase chain reaction (RT-PCR),respectively.Results Immunohistochemistry showed that the expressing rate ofc-fos protein in retina was (68.000±10.368)％,(51.000±6.519)％,(46.000±6.519)％,(31.000±7.416)％ and (25.000 ± 7.071)％ in the control group,high frequency flickering group,moderate frequency flickering group,low frequency flickering group and form deprivation group respectively 2 weeks after experiment.The expression rates of c-fos protein in retina in different frequencies of flickering light groups and form deprivation group were significantly lower than that in the control group (t =3.104,4.017,6.490,7.661,all P＜0.05),with the lowest rate in the form deprivation group (P＜0.05).The expression of c-fos detected by Western blot assay exhibited that the relative values of c-fos protein in retina (c-fos/GAPDH) was 0.804±0.050,0.687±0.047,0.667±0.036,0.558±0.036 and 0.532 ±0.056,respectively in the control group,high frequency flickering group,moderate frequency flickering group,low frequency flickering group and form deprivation group,illustrating significantly lowing in different frequencies of flickering light groups and form deprivation group compared with control group (t =2.961,3.184,6.971,6.276,all P＜0.05),whereas the c-fos in the low frequency group and form deprivation group,c-fos protein was less expressed in comparison with the higher frequency flicking group (P＜0.05).The expression level of c-fos mRNA (c-fos mRNA/GAPDH mRNA) in retina was 0.820±0.056,0.663±0.061,0.627±0.034,0.521±0.041 and 0.474 ±0.045 in the control group,high frequency flickering group,moderate frequency flickering group,low frequency flickering group and form deprivation group,respectively.These results demonstrated a significant decline in the expression of c-fos mRNA in different frequencies of flickering group and form deprivation group compared with the control group(t=3.262,5.070,7.173,8.305,all P＜0.05),and the inhibition ability of low frequency of flickering group and form deprivation group was much stronger.Conclusions The c-fos gene level in the retina has a negative relationship with the severity of myopia induced by flickering light and form deprivation.

Objective To describe the depression of premature infants′ mothers and discuss the related influence factors. Methods A total of 86 premature infants′ mothers completed Edinburgh Postnatal Depression Scale at 3-days postpartum in this descriptive study during August 2014 to January 2015 in Obstetrics and Gynecology Hospital of Fudan University. Results The prevalence of postpartum depression in premature infants′ mothers was 25.6% (22/86). Educational levels, family support, character, and number of abortion of mothers, pregnancy complication, gestational age, birth weight, Apgar score, length of hospitalization, and birth with abnormalities of premature infants were found significantly associated with postpartum depression (P<0.05). By Logistic regression, family support (OR=3.253, 95% CI=1.180-8.966) and length of hospitalization (OR=2.905, 95% CI=1.418-5.952) were the risk factors of the postpartum depression at 3-days after delivery. Conclusions Premature infants′mothers at 3-days postpartum presented with obvious postpartum depression. Psychological intervention should be focused on its influence factors.

ObjectiveTo observe the effect of Xiaoyao powder combined with prozac and psychological therapy on post-stroke depression (PSD).Methods85 PSD patients were randomly divided into the treatment group (n=43) and control group (n=42). All patients were treated with routine therapy, including prozac and psychological therapy. Patients in the treatment group were also given Xiaoyao powder. Scores of Hamilton Depression Scale (HAMD), modified Barthel index (MBI) and Scandinavian Stroke Scale (SSS) of all patients were evaluated before and after therapy.ResultsAfter treatment, the effective rate and MBI scores were significantly higher and scores of HAMD and SSS were significantly lower for patients of the treatment group compared with those of the control group (P<0.01).ConclusionXiaoyao powder combined with prozac and psychological therapy can improve depression and neural function of PSD patients significantly.

Aim To investigate the protective effects of Aplysin on ethanol-induced oxidative damage in rat pri-mary hepatocytes. Methods Rat primary hepatocytes were obtained via the portal vein collagenaseⅣin situ perfusion technique followed by a Percoll density gradi-ent centrifuge. MTT test was used to determine the op-timum dose of Aplysin and ethanol, and detect the cell vitality in primary hepatocytes. Supernatants of primary hepatocytes were harvested to measure AST and LDH level, and the SOD, GSH-PX activities and MDA con-tent in primary hepatocytes were observed. Flow cy-tometry was used to detect the cell apoptosis rate. DNA damage in primary hepatocytes was detected by single-cell gel electrophoresis assay. The level of mitochon-drial membrane potential in primary hepatocytes was tested by fluorogenic probe JC-1 . The CYP2 E1 activity in primary hepatocytes was detected by colorimetry. The proteins of CYP2 E1 were detected by Western blot. Results 300 mmol·L-1 dose of ethanol and 30 mg·L-1 dose of Aplysin were the optimal dosages and were used in the subsequent experiments. Hepatocyte vitality was significantly increased in Aplysin group compared to that in ethanol group, and Aplysin inhibi-ted the release of AST and LDH(P<0. 05). For Apl-ysin treatment group, the activities of hepatocyte SOD and GSH were significantly increased, and MDA was markedly lowered as compared with those in ethanol group( P <0. 05 ) . Aplysin could alleviate hepatocyte apoptosis significantly, and hepatocyte DNA damage rates of Ⅱ ~Ⅲ level and Ⅳ level were significantly lowered in Aplysin treatment group as compared with those in ethanol group, and Aplysin had evident im-provement in alcohol induced mitochondria damage of hepatocyte. Primary hepatocyte activities and protein expression of CYP2 E1 were markedly lowered in Aply-sin treatment group as compared with those in ethanol group(P<0. 05). Conclusion Aplysin has protective effects on liver oxidative damage induced by alcohol of primary cultured rat hepatocytes by blocking CYP2 E1 activation, relieving oxidative stress, and sharpening the oxidation resistance ability.

Aspergillosis, Allergic Bronchopulmonary ; diagnosis ; drug therapy ; Child ; Humans ; Male

OBJECTIVE To analyze the clinical features of nosocomial infection of malignant tumor in our hospital.METHODS The clinical material of 6967 malignant tumor patients with hospital infection was analyzed retrospectively.RESULTS From them 409 patients got nosocomial infection and the infection rate was 5.87%;respiratory infection was the main infection(57.9%),digestive tract infection was the rext(18.83%).G-pathogens accounted for 43.22%,fungi infection for 36.91%,in which the Candida were the head pathogens.The risk factors were age,antibiotic usage,invasive operation and anti-tumor treatments.CONCLUSIONS The malignant tumor is easy to cause the hospital infection.Strengthening the nosocomial infection management,controlling the risk factors,and the standardzed antibiotic usage can reduce the nosocomial infection occurrence.

To reveals the effects of tree species on polysaccharides content of epiphytic Dendrobium officinale. The polysaccharides content of D. officinale attached to living tress in wild or stumps in bionic-facility was determined by phenol-sulfuric acid method. There were extremely significant differences of polysaccharides content of D. officinale attached to different tree species, but the differences had no relationship with the form and nutrition of barks. The polysaccharides content of D. officinale mainly affected by the light intensity of environment, so reasonable illumination favored the accumulation of polysaccharides. Various polysaccharides content of D. officinal from different attached trees is due to the difference of light regulation, but not the form and nutrition of barks.
Dendrobium ; chemistry ; Light ; Plant Bark ; physiology ; Polysaccharides ; analysis ; Trees

Objective To detect the expression of bcl-2 and c-Met genes in lung cancer cell lines with different mutations of epidermal growth factor receptor (EGFR), in order to explore the association between expression of bcl-2 and c-Met genes and drug resistance in non-small cell lung cancer (NSCLC). Methods Direct sequencing was used to detect EGFR mutations status in HCC827 cells, A549 cells and H1975 cells. Immunocytochemistry was conducted to test bcl-2 and c-Met expression. RT-PCR was performed to analyzed bcl-2 gene expression and ARMS was used to detect EGFR mutations status in malignant pleural effusion of NSCLC patients. Results A549 cells, HCC827 cells and H1975 cells were EGFR wild type, EGFR exon 19 deletion (19del), and EGFR exon 21 L858R and exon 20 T790M double mutations. c-Met and bcl-2 protein located in cytoplasm and the intensity of positive expression was highest in HCC827 cells, followed by A549 cells and H1975 cells. The bcl-2 mRNA expression was higher in HCC827 and A549 cells than that in H1975 cells (10.93±1.90 vs. 0.83±0.15, P=0.013; 7.13±1.33 vs. 0.83±0.15, P= 0.000). However bcl-2 mRNA expression was not associated with EGFR mutations (wild type, 19del and L858R) in malignant pleural effusion of NSCLC patients. Conclusion bcl-2 and c-Met gene in HCC827 cells (EGFR 19del) expression is significantly higher than those in H1975 cells (EGFR L858R/T790M), implying EGFR L858R mutations and 19del mutations may be regulated by different signaling pathways.

Animals ; Male ; Particle Size ; Rats ; Rats, Sprague-Dawley ; Respiratory Distress Syndrome, Adult ; chemically induced ; Silicon Dioxide ; chemistry ; toxicity