Time filter

Source Type

Hu L.,Ocean University of China | Sun C.,Ocean University of China | Luan J.,Shandong Entry Exit Inspection and Quarantine Bureau | Lu L.,Qingdao Women and Children Hospital | Zhang S.,Ocean University of China
Acta Biochimica et Biophysica Sinica | Year: 2015

Antioxidants, or anti-oxidant agents, have attracted a great deal of attention in recent years because of their roles in prevention of chronic diseases and utilization as preservatives in food and cosmetics. In this study, we clearly demonstrated that zebrafish recombinant phosvitin (rPv) is an antioxidant agent capable of inhibiting the oxidation of the linoleic acid, and scavenging the 2,2-diphenyl-1-picrylhydrazyl radical. We also showed that zebrafish rPv is a cellular antioxidant capable of protecting radical-mediated oxidation of cellular biomolecules. Importantly, zebrafish rPv is non-cytotoxic to murine macrophage RAW264.7 cells. It is the first report that showed the antioxidant activities of Pv in fishes, suggesting that zebrafish Pv can be an important antioxidant, which can be used as preservatives in food and cosmetics and even as supplementary mediator in different diseased states. © The Author 2015.


PubMed | Eighth Peoples Hospital of Qingdao, Qingdao Women and Children Hospital, Qingdao Hiser Medical Group, Shandong University and Qingdao University
Type: Journal Article | Journal: Archives of gynecology and obstetrics | Year: 2016

Limited studies have reported the effect of prenatal alcohol exposure (PAE) on fetal liver development or liver dysfunction. The current review was conducted to systematically review published studies of PAE and liver dysfunction.Pub Med, Embase and Web of Science database were searched using terms of prenatal alcohol exposure and liver or fetal alcohol spectrum disease and liver. The pooled effect size of alcohol exposure was assessed by Hedgess g and 95% confidence interval (CI) using fixed model or random model depending on the heterogeneity determined by Q test and I (2) statistic.A total of 23 studies were included. The results indicated that gestation alcohol exposure resulted in significant reduction of fetal body weight (Hedgess g=-6.8541.149, 95% CI -9.106 to -4.602, P<0.001), but not fetal liver weight reduction (Hedgess g=-0.0760.878, 95% CI -1.799 to 1.647, P=0.931). PAE resulted in significant decline in protein synthesis or enzyme activity of offspring fetal liver including glutathione and 25(OH)2D (Hedgess g=-1.1490.108, 95% CI -1.361 to -0.938, P<0.001), as well as significant increase in proteins including oxidants and collagen (Hedgess g=1.3300.146, 95% CI 1.044-1.616, P<0.001).These results suggested that PAE affects fetal body weight but not liver weight, and that PAE may result in offspring fetal liver dysfunction.


PubMed | Shandong Provincial Hospital, Qingdao Women and Children Hospital, Qingdao Hiser Medical Group, Eighth Peoples Hospital of Qingdao and Qingdao University
Type: Journal Article | Journal: Genetics and molecular research : GMR | Year: 2016

In this case-control study, we assessed the influence of IL-10 -1082A/G and -819T/C on the development of preeclampsia. The IL-10 -1082A/G and -819T/C polymorphisms were assessed by polymerase chain reaction-restriction fragment length polymorphism. The genotype distributions of the IL-10 -1082A/G and -819T/C polymorphisms in the control subjects were in conformance with Hardy-Weinberg equilibrium (HWE; P = 0.46 and 0.17). Unconditional logistic regression analyses revealed that individuals carrying the CC genotype of IL-10 -819T/C were associated with an increased risk of preeclampsia compared to the TT genotype. The odds ratio (95% confidence interval) for the CC genotype of IL-10 -819T/C was 1.71 (1.07-3.27) compared to the TT genotype. In conclusion, the results of our study indicated that the IL-10 -819T/C polymorphism was associated with an increased risk of preeclampsia in a Chinese population.


Mo X.-M.,Ocean University of China | Mo X.-M.,Qingdao Women and Children Hospital | Li H.-H.,Qingdao University | Li H.-H.,Qingdao Municipal Hospital | And 2 more authors.
Oncology Letters | Year: 2014

In order to study the influence and mechanism of miR-544a on the self-renewal ability of lung cancer stem cells, TargetScan was used to predict the target gene of miR-544a. A luciferase reporter system and western blotting were used to validate the target genes identified by TargetScan. 95C and 95D low and high metastatic human lung cancer cells were transfected with miR-544a, and quantitative polymerase chain reaction (qPCR) was used to verify the miR-544a expression in these two cell lines. Tumor ball (spheroid) suspension culture was use to study the effects of miR-544a on lung cancer stem cells. TargetScan predicted that miR-544a interacted with GSK3β. A luciferase reporter system (F=201.37, P<0.01) and western blot analysis was used to validate that miR-544a could inhibit the expression of GSK3β, while β-catenin and CD133 were significantly increased in miR-544a-overexpressing 95C and 95D cells (F=9.43, 7.73 and 3.37, respectively; P<0.01). qPCR revealed that miR-544a was overexpressed in transfected 95C and 95D cells (20.51±0.97 and 15.16±1.38, respectively; F=418.05; P<0.01). miR-544a-overexpressing cells formed spheroids in suspension cultures of spheroid single cells. miR-544a was shown to reduce the expression of GSK3β and activate the Wnt signaling pathway to maintain the self-renewal ability of lung caner stem cells.


Mo X.,Ocean University of China | Mo X.,Qingdao Women and Children Hospital | Zhang F.,Qingdao Women and Children Hospital | Liang H.,Qingdao Women and Children Hospital | And 3 more authors.
OncoTargets and Therapy | Year: 2014

Objective: To find out the effect of miR-544a on the invasion of lung cancer cells and to explore the underlying molecular mechanisms. Methods: Micro-ribonucleic acid (miRNA) expression in two different invasive lung cancer cell lines 95C (low invasive ability) and 95D (high invasive ability) was analyzed by miRNA microarray and real-time quantitative polymerase chain reaction (PCR); miR-544a mimic was transfected to 95C, and its invasion ability was detected by transwell migration assay; we predicted the candidate miRNA target genes by TargetScan (Whitehead Institute for Biomedical Research, Cambridge, MA, USA) software and verified the target genes by Western blot. Results: The expression of miR-544a was significantly increased in 95D in miRNA microarray and quantitative PCR tests (P,0.05). After being transfected with miR-544a mimic, the invasion ability of 95C was enhanced (P,0.01). Moreover, transfection with miR-544a inhibitor decreased the invasion ability of 95D (P,0.01). miR-544a possibly combined with CDH1 (E-cadherin) predicted by the TargetScan analysis. 95C with miR-544a mimic reduced the expression of CDH1 and improved the expression of vimentin, while 95D with miR-544a inhibitor improved the expression of CDH1 and reduced the expression of vimentin. Conclusion: miR-544a can promote the invasion of non-small cell lung cancer by downregulation of CDH1 and upregulation of vimentin. © 2014 Mo et al. This work is published by Dove Medical Press Limited.


PubMed | Qingdao Women and Children Hospital and Guangzhou University
Type: Journal Article | Journal: Chinese journal of integrative medicine | Year: 2016

To explore the neuroprotective effects of electroacupuncture (EA) on hypoxic-ischemic encephalopathy (HIE) and to further investigate the role of glial cell line-derived neurotrophic factor (GDNF) family receptor member RET (rearranged during transfection) and its key downstream phosphatidylinositol 3 kinase (PI-3K)/protein kinase B (Akt) pathway in the process.A total of 220 seven-day-old SD rats (of either sex, from 22 broods) were randomly divided into two groups, one (30 rats) for sham-surgery group and the other (190 rats) for HIE model group. The HIE model was established using the left common carotid artery ligation method in combination with hypoxic treatment. The successfully established rats were randomly divided into five groups, including control model group, EA group, sham-EA group, antagonist group and antagonist plus electroacupuncture group, with 35 rats in each group. Baihui (GV 20), Dazhui (GV 14), Quchi (LI 11) and Yongquan (KI 1) acupoints were chosen for acupuncture. EA was performed at Baihui and Quchi for 10 min once a day for continuous 1, 3, 7 and 21 days, respectively. The rats were then killed after the operation and injured cerebral cortex was taken for the measurement of neurologic damage by hematoxylin-eosin (HE) staining and the degenerative changes of cortical ultrastructure by transmission electron microscopy. RET mRNA level and Akt protein level were detected by real-time reverse-transcription polymerase chain reaction (RT-PCR) and western blot analysis, respectively.EA could ameliorate neurologic damage of the first somatic sensory area (S1Tr) and alleviate the degenerative changes of ultrastructure of cortical neurons in rats subjected to HIE. And the longer acupuncture treatment lasted, the better its therapeutic effect would be. This was accompanied by gradually increased expression of GDNF family receptor RET at the mRNA level and its downstream signaling Akt at the protein level in the ischemic cortex.EA has neuroprotective effects on HIE and could be a potential therapeutic strategy for HIE in the neonate. Activation of RET/Akt signaling pathway might be involved in this process.


PubMed | Ocean University of China and Qingdao Women and Children Hospital
Type: | Journal: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy | Year: 2016

In order to study the influence of different substituent groups on the fluorescence properties, a series of bis-Schiff bases (L) with electron-donating groups (salicylaldehyde, o-vanillin, 2,4-dihydroxybenzaldehyde) and electron-drawing group (4-formylbenzoic acid) have been synthesized, and characterized by IR spectrum, NMR, mass spectrum, and fluorescence spectroscopy. The investigation of the fluorescent properties reveals that the fluorescence can be enhanced when the bis-Schiff base ligands with electron-donating groups complex with Zn ion, while other kinds of metal complexes with these ligands do not show any enhancement, whereas no fluorescence enhancement can be observed when the ligand with electron-drawing group complexes with all different types of metal ions. In addition, as for the ligands with electron-donating groups detecting zinc ion, the fluorescence intensity is linear correlated with the concentration of zinc ion. Therefore, the study indicates that the ligands with electron-donating groups can be used as Zn ion fluorescent sensor.


PubMed | Qingdao Women and Children Hospital and Qingdao University
Type: Journal Article | Journal: Systems biology in reproductive medicine | Year: 2016

Estradiol mediates its actions by binding to classical nuclear receptors, estrogen receptor (ER-) and estrogen receptor (ER-), and the non-classical G protein-coupled estrogen receptor 1(GPER). Several gene knockdown models have shown the importance of the receptors for growth of the oocyte and for ovulation. The aim of our study was to identify the pattern of GPER expression in human cumulus granulosa cells (CGCs) from ovarian follicles at different stages of oocyte maturation, and the differences of GPER expression between polycystic ovary syndrome (PCOS) patients and non-PCOS women. Thirty-eight cases of PCOS patients and a control group of thirty-two infertile women without PCOS were used in this study. GPERs location in CGCs was investigated by immunohistochemistry. Quantitative RT-PCR and western blot were used to identify the quantify GPER expression. Here we demonstrated that GPER was expressed in CGCs of both PCOS patients and non-PCOS women, and the expression of GPER was decreased significantly during oocyte maturation. But the expression levels of GPER in CGCs of PCOS patients and non-PCOS women were not significantly different. The data indicate that GPER may play a role during human oocyte maturation through its action in cumulus granulosa cells.AMHRIIs: anti-Mullerian hormone type II receptors; BMI: body mass index; CGCs: cumulus granulosa cells; COH: controlled ovarian hyperstimulation; E2: estradiol; EGFR: epidermal growth factor receptor; ER-: estrogen receptor; ER-: estrogen receptor ; FF: follicular fluid; FSH: follicle-stimulating hormone; GCs: granulosa cells; GPER: G protein-coupled estrogen receptor 1; GV: germinal vesicle; GVBD: germinal vesicle breakdown; HCG: human chorionic gonadotropin; IRS: immunoreactive score; IVF-ET: in vitro fertilization and embryo transfer; MI: metaphase I; MII: metaphase II; MAPK: mitogen-activated protein kinase; OCCCs: oocyte corona cumulus complexes; PCOS: polycystic ovarian syndrome; qquantitative real-time PCR: qRT-PCR.


Yu D.,Qingdao Women and Children Hospital | Han Y.,Qingdao Women and Children Hospital | Chen T.,Qingdao Women and Children Hospital
Otolaryngology - Head and Neck Surgery (United States) | Year: 2014

Objective. Contrast-enhanced ultrasound (CEUS) is a new noninvasive modality for the diagnosis of thyroid nodules. However, the performance of CEUS in differentiating malignant and benign thyroid nodules has not been systematically evaluated. This meta-analysis was performed to assess the accuracy of CEUS in diagnosing thyroid nodules.Data Sources. PubMed, Embase, and the references of included studies were examined.Review Methods. We recorded the characteristics of the included studies and assessed the quality of each study using the Quality Assessment of Diagnostic Accuracy Studies tool. The pooled sensitivity, specificity, positive likelihood ratio (LR), negative LR, diagnostic odds ratio (DOR), and area under the curve (AUC) were calculated. We also evaluated the publication bias.Results. This meta-analysis included 7 studies with a total of 597 thyroid nodules. The pooled the sensitivity, specificity, and positive and negative LR were 0.853, 0.876, 5.822, and 0.195, respectively. The DOR and AUC were 34.730 and 0.9162, respectively. Heterogeneity existed between the included studies. The results of subgroup analyses indicated that the evaluation processes are likely the predominant source of heterogeneity. No significant publication bias was observed.Conclusion. Contrast-enhanced ultrasound is a promising noninvasive technique for the differential diagnosis of benign and malignant thyroid nodules and could be a valuable supplemental method to fine-needle aspiration. © American Academy of Otolaryngology - Head and Neck Surgery Foundation 2014.


PubMed | Qingdao Women and Children Hospital and Shandong University
Type: Journal Article | Journal: Clinics and research in hepatology and gastroenterology | Year: 2016

Tumor necrosis factor- converting enzyme (TACE) has been demonstrated to be involved in liver inflammation. However, the significance of TACE methylation in acute-on-chronic hepatitis B liver failure (ACHBLF) has not been demonstrated. This study aims to evaluate TACE methylation status in ACHBLF and determine its predictive value for prognosis.Forty-five patients with ACHBLF, 80 with chronic hepatitisB (CHB) and 54 healthy controls (HCs) were enrolled. The methylation status of TACE promoter was determined by methylation-specific polymerase chain reaction. The TACE mRNA expression was determined by quantitative real-time polymerase chain reaction. The plasma levels of TACE, TNF-, sTNFRI, sTNFRII were measured by enzyme-linked immunosorbent assay.TACE methylation was significantly lower in patients with ACHBLF than those with CHB ((2)=24.69, P<0.01) and HCs ((2)=35.93, P<0.01). Meanwhile, TACE methylation was significantly lower in CHB patients than HCs ((2)=4.03, P<0.05). TACE methylation was significantly inversely associated with its mRNA expression (r=-0.68; P<0.01). The plasma levels of TACE, TNF-, sTNFRI, sTNFRII were significantly higher in patients with ACHBLF than those with CHB (P<0.05, respectively) and HCs (P<0.05, respectively). In patients with ACHBLF, significantly higher prothrombin activity, lower total bilirubin and MELD score were found in TACE methylated group than unmethylated group (P<0.05). ACHBLF patients with methylated TACE showed significantly better survival than those without (P<0.01).This study showed that demethylation of TACE promoter occurred in ACHBLF and might serve as a potential prognostic marker.

Loading Qingdao Women and Children Hospital collaborators
Loading Qingdao Women and Children Hospital collaborators