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Cellular Physiology and Biochemistry

Ruirui Han, Qianqian Sun, Jianbo Wu, Pengyuan Zheng, Guoqiang Zhao
BACKGROUND: As the end product of the bacterial fermentation of dietary fiber in the colonic lumen, sodium butyrate (NaBt) has been reported to exert antitumor effects on colorectal cancer (CRC). In addition to functioning as a histone deacetylase (HDAC) inhibitor, NaBt also regulates the expression of microRNAs (miRNAs) to inhibit CRC cell proliferation. Yet, the mechanisms involved are not completely understood. Here we investigate whether NaBt regulates miR-203 to inhibit CRC growth and explore the promising target gene of miR-203 in CRC cells...
October 24, 2016: Cellular Physiology and Biochemistry
Mariela Arias-Hidalgo, Jan Hegermann, Georgios Tsiavaliaris, Fabrizio Carta, Claudiu T Supuran, Gerolf Gros, Volker Endeward
BACKGROUND/AIMS: Across the mitochondrial membrane an exceptionally intense exchange of O2 and CO2 occurs. We have asked, 1) whether the CO2 permeability, PM,CO2, of this membrane is also exceptionally high, and 2) whether the mitochondrial membrane is sufficiently permeable to HCO3- to make passage of this ion an alternative pathway for exit of metabolically produced CO2. METHODS: The two permeabilities were measured using the previously published mass spectrometric 18O exchange technique to study suspensions of mitochondria freshly isolated from rat livers...
October 24, 2016: Cellular Physiology and Biochemistry
Yoko Ishimoto, Yuki Hirota-Takahata, Emi Kurosawa, Jun Chiba, Yuko Iwadate, Yoshiko Onozawa, Toru Hasegawa, Akihiro Tamura, Masahiro Tanaka, Hideki Kobayashi
BACKGROUND/AIMS: Vascular endothelial growth factor (VEGF) is a key molecule in the regulation of both angiogenesis and vascular permeability. However, it is known that overproduction of VEGF induces abnormal blood vessel formation and these vessels cause several disease pathologies, such as diabetic retinopathy. The purpose of this study was to find novel vasoactive compounds which have different properties from VEGF. METHODS/RESULTS: We screened a natural product library using a co-culture angiogenic assay of endothelial cells and fibroblasts...
October 24, 2016: Cellular Physiology and Biochemistry
Jian Tang, Yingbin Ge, Lei Yang, Xinyu Xu, Tao Sui, Dawei Ge, Jun Que, Xiaojian Cao
BACKGROUND/AIMS: Hypertrophic scars (HS) formation results from reduced apoptosis and increased proliferation of fibroblasts. Therefore, apoptosis of fibroblasts is a key target for the development of novel therapeutic strategies for HS. Previous reports demonstrated that FK506 could attenuate scar formation in vivo and FK506 could also induce endoplasmic reticulum stress (ER stress). However, the effects of FK506 on ER stress-mediated apoptosis in fibroblasts remain unclear. METHODS: Rat skin fibroblasts were used in the study...
October 24, 2016: Cellular Physiology and Biochemistry
Dongmei Yu, Yong Shang, Jian Yuan, Shuang Ding, Sai Luo, Lijun Hao
OBJECTIVES: Our goal was to investigate the relationship between keloid and telomerase as well as clarifying the influence of Wnt/β-catenin signaling on keloid cell proliferation. METHODS: Tissues from 18 keloid patients were collected for further study. Keloid progenitor cells (KPC) and skin progenitor cells (SKP) were both included in this study. Lenti-virus transfection was used to divide cells into different groups in which cells were treated with different substances: negative control (NC) group, wnt10a siRNA group, β-catenin siRNA group and TERT siRNA group...
October 24, 2016: Cellular Physiology and Biochemistry
Zhuojun Zheng, Xiaodong Li, Yuandong Zhu, Weiying Gu, Xiaobao Xie, Jingting Jiang
INTRODUCTION: This pooled analysis study aimed to reveal the prognostic relevance of microRNAs (miRNAs) in patients with diffuse large B-cell lymphoma (DLBCL). MATERIALS AND METHODS: We examined the impact of miRNAs on clinical outcome. Eligible studies were identified and quality assessed using multiple search strategies. Data were extracted from included studies which correlated survival with expression of miRNAs (serum or tissue). RESULTS: We pooled proper studies, and combined the hazard ratios with 95% confidence intervals to estimate strength of the correlations...
October 24, 2016: Cellular Physiology and Biochemistry
Jianchun Huang, Xiaojun Tang, Fangxing Ye, Junhui He, Xiaolong Kong
BACKGROUND/AIMS: Coronary heart disease is characterized by vascular stenosis or occlusion resulting in myocardial ischemia, hypoxia and necrosis. In China, the combination of aspirin and Fufang Danshen Diwan (FDD), a traditional Chinese medicine formula, has been suggested in the treatment of coronary heart disease. There have been several studies comparing the effectiveness of aspirin alone and in combination with FDD to treat coronary artery disease; however, it remains unclear whether combined aspirin therapy is superior...
October 24, 2016: Cellular Physiology and Biochemistry
Mauro C Wesseling, Lisa Wagner-Britz, Duc Bach Nguyen, Salome Asanidze, Judy Mutua, Nagla Mohamed, Benjamin Hanf, Mehrdad Ghashghaeinia, Lars Kaestner, Ingolf Bernhardt
BACKGROUND/AIMS: In previous publications we were able to demonstrate the exposure of phosphatidylserine (PS) in the outer membrane leaflet after activation of red blood cells (RBCs) by lysophosphatidic acid (LPA), phorbol-12 myristate-13acetate (PMA), or 4-bromo-A23187 (A23187). It has been concluded that three different mechanisms are responsible for the PS exposure in human RBCs: (i) Ca2+-stimulated scramblase activation (and flippase inhibition) by A23187, LPA, and PMA; (ii) PKCα activation by LPA and PMA; and (iii) enhanced lipid flip flop caused by LPA...
October 24, 2016: Cellular Physiology and Biochemistry
Zuolei Chen, Donat R Spahn, Xuewei Zhang, Yingzhi Liu, Haichen Chu, Zhongkai Liu
BACKGROUND/AIMS: The purpose of this study was to investigate the implications of protein kinase C-epsilon (PKCε), Extracellular Signal-regulated Kinase 1/2 (ERK1/2) and mitochondrial permeability transition pore (mPTP) in myocardial protection induced by morphine postconditioning (MpostC). METHODS: The isolated rat hearts were randomly assigned into one of eight groups. Hearts in time control (TC) group were constantly perfused for 105min. Hearts in ischemia-reperfusion (I/R) group were subjected to 45 min of ischemia followed by 1 h of reperfusion...
October 24, 2016: Cellular Physiology and Biochemistry
Cristina Talarico, Vincenzo Dattilo, Lucia D'Antona, Miranda Menniti, Cataldo Bianco, Francesco Ortuso, Stefano Alcaro, Silvia Schenone, Nicola Perrotti, Rosario Amato
The serum- and glucocorticoid-regulated kinase (SGK) family consists of three members, SGK1, SGK2 and SGK3, all displaying serine/threonine kinase activity and sharing structural and functional similarities with the AKT family of kinases. SGK1 was originally described as a key enzyme in the hormonal regulation of several ion channels and pumps. Over time, growing and impressive evidence has been accumulated, linking SGK1 to the cell survival, de-differentiation, cell cycle control, regulation of caspases, response to chemical, mechanical and oxidative injury in cancer models as well as to the control of mitotic stability...
October 24, 2016: Cellular Physiology and Biochemistry
Etheresia Pretorius, Jeanette N du Plooy, Janette Bester
Erythrocytes (RBCs) are extremely sensitive cells, and although they do not have nuclei and mitochondria, are important health indicators. This is particularly true because, during inflammation, whether it is systemic or chronic, the haematological system is constantly exposed to circulating inflammatory mediators. RBCs have a highly specialized and organized membrane structure, which interacts and reacts to inflammatory molecule insults, and undergo programmed cell death, similar to apoptosis, known as eryptosis...
October 24, 2016: Cellular Physiology and Biochemistry
Jens Zierle, Rosi Bissinger, Florian Lang
BACKGROUND/AIMS: Teriflunomide, an inhibitor of pyrimidine synthesis and thus proliferation of activated T and B lymphocytes, is successfully used for treatment of inflammatory disease. Teriflunomide has further been shown to trigger apoptosis of tumor cells and has thus been considered for the treatment of malignancy. In analogy to apoptosis of nucleated cells, erythrocytes may enter suicidal death or eryptosis, which is characterized by cell shrinkage and phospholipid scrambling of the cell membrane with translocation of phosphatidylserine to the erythrocyte surface...
October 24, 2016: Cellular Physiology and Biochemistry
Qi Fan, Yonglong Zhang, Yanfeng Liu, Jin Yang, Dan Li, Yating Tang, Lei Cai, Zhennan Zhao, Peng Zhou, Yi Lu
BACKGROUND/AIMS: Oxidative stress plays a critical role in the development of cataracts, and glutaredoxins (Grxs) play a major protective role against oxidative stress in the lens. This study aimed to reveal the global regulatory network of Grx1. METHODS: Stable isotope labeling by amino acids in cell culture (SILAC) was used in a proteome-wide quantitative approach to identify the Grx1 regulatory signaling cascades at a subcellular resolution in response to oxidative stress...
October 17, 2016: Cellular Physiology and Biochemistry
Yi Zhi, Jinhong Pan, Wenhao Shen, Peng He, Ji Zheng, Xiaozhou Zhou, Gensheng Lu, Zhiwen Chen, Zhansong Zhou
BACKGROUND/AIMS: Ginkgolide B (GB) is currently used as an anticancer drug for treatment of some malignant cancers. However, whether it may have therapeutic effects on bladder cancer remains unknown. Here, we studied the effects of GB on bladder cancer cells. METHODS: Bladder cells were treated with different doses of GB, and the effects on ZEB1 and microRNA-223-3p (miR-223-3p) were analyzed by RT-qPCR and/or Western blot. Prediction of a regulatory relationship between miR-93 and 3'-UTR of Beclin-1 mRNA was performed by a bioinformatics algorithm and confirmed by a dual luciferase reporter assay...
October 17, 2016: Cellular Physiology and Biochemistry
Longbin Zheng, Ying Li, Xuesong Li, Jiayuan Kou, Zhaoyu Zhong, Yueqing Jiang, Zhongni Liu, Ye Tian, Liming Yang
BACKGROUND/AIMS: Sonodynamic therapy (SDT) is considered a new approach for the treatment of atherosclerosis. We previously confirmed that hydroxyl acetylated curcumin (HAC) was a sonosensitizer. In this study, we investigated the mechanism of THP-1 macrophage apoptosis and autophagy induced by HAC mediated SDT (HAC-SDT). METHODS: Cell viability was measured using a CCK-8 assay. Laser scanning confocal microscopy was used to measure the levels of intracellular reactive oxygen species (ROS), sub-cellular HAC localization, BAX and cytochrome C translocation, LC3 expression, monodansylcadaverine staining and Dil-labeled oxidized low density lipoprotein (Dil-ox-LDL) uptake...
October 17, 2016: Cellular Physiology and Biochemistry
Lingfang Li, Yifan Li, Ziyu Dai, Meitong Liu, Bing Wang, Shuiping Liu, Lili Wang, Liyu Chen, Yurong Tan, Guojun Wu
BACKGROUND: The present study was designed to observe the infection of human cytomegalovirus (HCMV) to human vascular smooth muscle cells (VSMCs), and the effect of viral infection on lipid metabolism in VSMCs. METHODS: The cytopathic effects were observed by inverted microscopy and viral infection were examined by electron microscopy and RT-PCR. The lipid metabolism related gene profiling of VSMCs after HCMV infection was assayed by cDNA assay and the abnormal expression of genes were validated by quantitative RT-PCR...
October 17, 2016: Cellular Physiology and Biochemistry
Huiyu Liu, Yan Gao, Bo Zhai, Hao Jiang, Yu Ding, Lianjiang Zhang, Changhong Li, Qiong Deng, Xianfeng Yu, Jiabao Zhang
AIMS: This study aims to clarify the effects of polyadenylation status on M-phase promoting factors (MPFs) during in vitro porcine oocyte maturation. METHODS: In this study, porcine follicular oocytes from large follicles (> 5 millimeter (mm)) and small follicles (< 3 mm) were examined at different follicular developmental stages. The polyadenylation of maternal mRNAs was inhibited by the addition of 3'-deoxyadenosine (3'-da) during the germinal vesicle (GV)(0 h), GV breakdown (GVBD)(18 h), metaphase I (MI)(28 h), and metaphase II (MII) (44 h) stages...
October 17, 2016: Cellular Physiology and Biochemistry
Na Cui, Huixia Wang, Wei Wang, Jie Zhang, Yueming Xu, Lei Jiang, Aimin Yang, Guimin Hao
BACKGROUND: The aim of this study is to assess the effect of body mass index (BMI) on outcomes of in vitro fertilization (IVF) / intracytoplasmic sperm injection (ICSI) among polycystic ovarian syndrome (PCOS) and non-PCOS patients. METHODS: This was a retrospective cohort study that was performed in the Second Hospital of Hebei Medical University. Patients who were under 35 years old were included in the study and were divided into four groups based on their BMI...
October 17, 2016: Cellular Physiology and Biochemistry
Chengyu Wang, Yin Cheng, Hongyi Liu, Yaping Xu, Hu Peng, Juntian Lang, Jianchun Liao, Haibin Liu, Huanhai Liu, Jingping Fan
BACKGROUND/AIMS: Nasopharyngeal cancer (NPC) is one of the common human malignant diseases all over the world, and chemotherapy remains the main therapy for NPC. However, the survival and life quality of NPC patients are still very poor. Thus, novel and selective anti-tumor agents are pressingly needed. Our previous study identified pectolinarigenin as a novel effective anti-tumor drug candidate for NPC. In this study, we further investigated its anti-tumor activities and explored the potential molecular mechanism...
October 17, 2016: Cellular Physiology and Biochemistry
Lei Chen, Yang Lu, Jun Wen, Xu Wang, Lingling Wu, Di Wu, Xuefeng Sun, Bo Fu, Zhong Yin, Hongli Jiang, Xiangmei Chen
BACKGROUND/AIMS: Individuals possessing a single kidney are at greater risk of renal injury upon exposure to harmful stimuli. This study aimed to explore the pathogenesis of renal injury in glomerulonephritis with versus without unilateral nephrectomy (UNX). METHODS: Histological analysis and label-free quantitative proteomics were performed on two models-the Habu snake venom-induced glomerulonephritis model with versus without UNX (HabuU and Habu models, respectively)...
October 17, 2016: Cellular Physiology and Biochemistry
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