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Xu J.,Daqing Oilfield General Hospital | Gao W.,Harbin Medical University | Ju Y.,Harbin Medical University
Archives of Gynecology and Obstetrics | Year: 2013

Object: Our purpose in conducting this study was to determine the efficacy of tranexamic acid (TXA) in reducing blood loss in patients after cesarean section (CS). Method: A randomized, double-blind, case-controlled study was conducted on 174 primipara undergoing CS. 88 of them given 10 mg/kg TXA immediately before CS were compared with 86 others to whom TXA was not given. Blood loss was calculated from blood collected and measured during two periods: the first period was from placental delivery to end of CS and the second from the end of CS to 2 h postpartum. Vital signs such as BP, HR, RP, hemoglobin, platelet count, postoperative PT and PPT were tested in the two groups. Results: Blood loss in the period between the end of CS and 2 h postpartum was significantly lower (p < 0.01) in the TXA group (46.6 ± 42.7) than in the control group (84.7 ± 80.2). The quantity of total blood from placental delivery to 2 h postpartum was also significantly reduced (p = 0.02) in the TXA group (379.2 ± 160.1) than in the control group (441.7 ± 189.5). However, the amount of blood loss in the period from placental delivery to the end of CS did not differ between the TXA and control groups (p = 0.17). PPH stopped in 65 women (75.6 %) in the control group and in 81 (92.0 %) in the TXA group (p < 0.01). No significant abnormal vital signs were observed after TXA administration. Mild, transient side effects occurred more often in the TXA group than in the control group. Conclusion: Treatment with TXA is effective in reducing blood loss in patients undergoing CS. Although the study was not adequately powered to address safety issues, the observed side effects were mild and transient. © 2012 Springer-Verlag Berlin Heidelberg.

Yuan Q.,Harbin Medical University | Gao W.,Harbin Medical University | Liu B.,Daqing Oilfield General Hospital | Ye W.,Harbin Medical University
Cellular Physiology and Biochemistry | Year: 2014

Background: In recent years, miRNAs have been suggested to play key roles in the formation and development of human glioma. The aim of this study is to investigate the effect and mechanism of miR-184 expression on the malignant behavior of human glioma cells. Methods: The relative quantity of miR-184 was determined in human glioma cell lines, and the expression of hypoxia-inducible factor-1 alpha (HIF-1α) was explored using western blotting. The effects of miR-184 inhibition on cell viability and apoptosis were explored, and the miR-184 target gene was determined using a luciferase assay and western blotting. Flow cytometry and Hoechst staining were used to evaluate cell growth and apoptosis. Matrigel invasion and scratch assays were performed to measure the ability of cell invasion and migration. Results: miR-184 and HIF-1α protein levels were significantly upregulated in human glioma cells. Downregulation of miR-184 inhibited cell viability and increased the HEB cell apoptotic rate. Luciferase and western blot assays verified that FIH-1 was the target gene of miR-184 and negatively controlled the protein level of HIF-1α. Inhibition of HIF-1α by siRNA facilitated the apoptosis of HEB cells and suppressed A172 cell invasion and migration. Conclusion: miR-184 upregulation enhanced the malignant phenotype of human glioma cancer cells by reducing FIH-1 protein expression. Copyright © 2014 S. Karger AG, Basel.

Zeng G.,University of Newcastle | Zeng G.,Harbin Medical University | Bowrey H.E.,University of Newcastle | Fang J.,Daqing Oilfield General Hospital | And 2 more authors.
Vision Research | Year: 2013

In a variety of species, the refractive state of the eye differs in different parts of the visual field (VF) with greater myopia in the region that views the ground (" lower field myopia" ). We studied the refraction and eye shape of the normal guinea pig eye to determine what feature(s) underlie this visual adaptation. Guinea pigs (n=67) were either newborn or raised under incandescent light until 14, 37 or 45days of age (20, 44, 20 and 11 eyes respectively). Refractive error was measured on-axis and 30° off-axis in the superior (SVF), inferior (IVF), temporal (TVF) and nasal (NVF) visual fields. Eye shape was analyzed from images of frozen hemisections in both the horizontal and vertical mid plane in 14day animals, and in the vertical plane at 0, 14 and 45days of age. Axial distances in vitro were correlated with in vivo high frequency ultrasound (r2=0.90). In the horizontal plane, asymmetry was caused by a ±6° conical zone surrounding the optic nerve (12° off-axis in NVF), suggesting significant myopia in this zone. At 30°, there was no asymmetry in eye length, but the NVF was +1.7D more myopic due to asymmetry in corneal power. In the vertical plane at 30°, the IVF was more myopic than the SVF by -3.8D at 0days, -5.9D at 14days and -6.0D at 37days. It resulted from vertical asymmetry in the distance of the retina from the lens center, which was longest in the mid IVF. This non-linear ramp retina was present at birth. In older animals, the peak of the ramp shifted more centrally, and the eye developed longer lengths in the extreme upper periphery (SVF) which may have been caused by the low position of the room ceiling. The vertical asymmetry in eye shape was mirrored by changes in choroid thickness, suggesting a mechanism by which eye shape was refined by vision during development. In early life, ocular growth in the vertical plane was 1.7 times higher in the center relative to the periphery, a pattern that reversed in the following month. Since emmetropization was achieved over this period, local visual cues related to clear vision may provide a switch to change ocular growth from a central to a peripheral emphasis. © 2012 Elsevier Ltd.

Diao Y.,Daqing Oilfield General Hospital
American Journal of Therapeutics | Year: 2016

MiR-221 is frequently upregulated in papillary thyroid cancer (PTC) tissues and cell lines, and this study was designed to validate the association of miR-221 with PTC proliferation, apoptosis, and migration. We observed that miR-221 suppressed TIMP3 expression by binding to 3′ untranslated region of TIMP3 mRNA, and TIMP3 expression was increased with the presence of miR-221 inhibitors; TIMP3 siRNA could reverse the effects of miR-221 inhibitors on PTC cells. The results indicated that miR-221 exacerbated PTC by downregulating the expression of TIMP3. The effects of miR-221 and TIMP3 in vivo were also confirmed by human PTC-bearing mice models which suggest consistent results with those in vitro studies. In summary, miR-221 could aggravate cell proliferation and invasion of PTC by targeting TIMP3.This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND), which permits downloading and sharing the work provided it is properly cited. The work cannot be changed in any way or used commercially. Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved.

Yuan L.,Harbin Medical University | Yuan L.,State Province Key Laboratories of Biomedicine Pharmaceutics of China | Zhao H.,Daqing Oilfield General Hospital | Zhang L.,Harbin Medical University | Liu X.,Harbin Medical University
Tumor Biology | Year: 2013

Multigene-based combination therapy is an effective practice in cancer gene therapy. Apoptin is a chicken anemia virus-derived, p53-independent, Bcl-2-insensitive apoptotic protein with the ability to specifically induce apoptosis in various human tumor cells. Interleukin-24 (IL-24) displays ubiquitous antitumor property and tumor-specific killing activity. Adeno-associated virus (AAV) is a promising gene delivery vehicle due to its advantage of low pathogenicity and long-term gene expression. In this study, we assessed the efficacy of combination therapy using AAV-mediated co-expression of apoptin and interleukin-24 on hepatocellular carcinoma in vitro and in vivo. Our results showed that AAV-mediated co-expression of IL-24 and apoptin significantly suppressed the growth and induced the apoptosis of HepG2 cells in vitro. Furthermore, AAV-mediated combined treatment of IL-24 and apoptin significantly suppressed tumor growth and induced apoptosis of tumor cells in xenograft nude mice. These data suggest that AAV vectors that co-express apoptin and IL-24 have great potential in cancer gene therapy. © 2013 International Society of Oncology and BioMarkers (ISOBM).

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