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https://www.readbyqxmd.com/read/28222433/high-glucose-induces-mouse-mesangial-cell-overproliferation-via-inhibition-of-hydrogen-sulfide-synthesis-in-a-tlr-4-dependent-manner
#1
Tao Ding, Wei Chen, Juan Li, Jiarong Ding, Xiaobin Mei, Haiyan Hu
BACKGROUND/AIMS: Overproliferation of mesangial cells was believed to play an important role in the progress of diabetic nephropathy, one of the primary complications of diabetes. Hydrogen sulfide (H2S), a well-known and pungent gas with the distinctive smell of rotten eggs, was discovered to play a protective role in diabetic nephropathy. METHODS: MTT assay was used to examine the viability of mesangial cells. Small interfering RNA was used to knock down the expression of TLR4 while specific inhibitor LY294002 to suppress the function of PI3K...
February 22, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28222432/extracellular-hmgb1-modulates-glutamate-metabolism-associated-with-kainic-acid-induced-epilepsy-like-hyperactivity-in-primary-rat-neural-cells
#2
Yuji Kaneko, Colleen Pappas, Teresita Malapira, Fernando Ĺ Vale, Naoki Tajiri, Cesar V Borlongan
BACKGROUND/AIMS: Neuroinflammatory processes have been implicated in the pathophysiology of seizure/epilepsy. High mobility group box 1 (HMGB1), a non-histone DNA binding protein, behaves like an inflammatory cytokine in response to epileptogenic insults. Kainic acid (KA) is an excitotoxic reagent commonly used to induce epilepsy in rodents. However, the molecular mechanism by which KA-induced HMGB1 affords the initiation of epilepsy, especially the role of extracellular HMGB1 in neurotransmitter expression, remains to be elucidated...
February 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28222430/microrna-218-increases-the-sensitivity-of-bladder-cancer-to-cisplatin-by-targeting-glut1
#3
Peng Li, Xiao Yang, Yidong Cheng, Xiaolei Zhang, Chengdi Yang, Xiaheng Deng, Pengchao Li, Jun Tao, Haiwei Yang, Jifu Wei, Jingyuan Tang, Wenbo Yuan, Qiang Lu, Xiaoting Xu, Min Gu
BACKGROUND/AIMS: MicroRNA-218 (miR-218) is down-regulated in many malignancies that have been implicated in the regulation of diverse processes in cancer cells. However, the involvement of miR-218 in chemo-sensitivity to cisplatin and the precise mechanism of this action remained unknown in bladder cancer. METHODS: qRT-PCR was used to detect miR-218 and its target Glut1 expression in bladder cancer cell lines T24 and EJ. CCK-8 method was utilized to measure the cell viability...
February 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28222426/knockdown-of-pd-l1-in-human-gastric-cancer-cells-inhibits-tumor-progression-and-improves-the-cytotoxic-sensitivity-to-cik-therapy
#4
Jing Li, Lujun Chen, Yuqi Xiong, Xiao Zheng, Quanqin Xie, Qi Zhou, Liangrong Shi, Changping Wu, Jingting Jiang, Haitao Wang
: Background/Abstract: PD-L1 has been an important target of cancer immunotherapy. We have showed that in human gastric cancer tissues, over-expression of PD-L1 was significantly associated with cancer progression and patients' postoperative prognoses. However, as of now, how PD-L1 regulates the biological function of gastric cancer cells still remains elusive. METHODS: We constructed the stable PD-L1 knockdown expression gastric cancer cell lines by using RNAi method, and further investigated the changes of biological functions including cell viability, migration, invasion, cell cycle, apoptosis, tumorigenicity in vivo, and the cytotoxic sensitivity to CIK therapy, in contrast to the control cells...
February 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28222390/epr-and-photophysical-characterization-of-six-bioactive-oxidovanadium-iv-complexes-in-the-conditions-of-in-vitro-cell-tests
#5
Marta Lovisari, Giorgio Volpi, Domenica Marabello, Silvano Cadamuro, Annamaria Deagostino, Eliano Diana, Alessandro Barge, Margherita Gallicchio, Valentina Boscaro, Elena Ghibaudi
A number of oxidovanadium(IV) complexes have been reported to display anticancer activity. A theranostic approach, based on the simultaneous observation of both the effect of oxidovanadium(IV) complexes on cell viability and the disclosure of their intracellular fate, is possible by using oxidovanadium(IV) complexes functionalized with fluorescent ligands. In the present study we accomplished the characterization of six oxidovanadium(IV) complexes in conditions close to those employed for in vitro administration...
February 13, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28222353/clogging-in-permeable-concrete-a-review
#6
REVIEW
Alalea Kia, Hong S Wong, Christopher R Cheeseman
Permeable concrete (or "pervious concrete" in North America) is used to reduce local flooding in urban areas and is an important sustainable urban drainage system. However, permeable concrete exhibits reduction in permeability due to clogging by particulates, which severely limits service life. This paper reviews the clogging mechanism and current mitigating strategies in order to inform future research needs. The pore structure of permeable concrete and characteristics of flowing particulates influence clogging, which occurs when particles build-up and block connected porosity...
February 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28222148/microrna-200a-silencing-protects-neural-stem-cells-against-cerebral-ischemia-reperfusion-injury
#7
Ji Ma, Shaofeng Shui, Xinwei Han, Dong Guo, Tengfei Li, Lei Yan
Neural stem cells (NSCs) play major roles in neurological recovery after cerebral infarction (CI). This study was trying to investigate whether miR-200a, a vital regulator in cell proliferation, migration and apoptosis, also has a role in oxygen-glucose deprivation/reperfusion (OGD/R) injured NSCs. In this study, primary NSCs were subjected to OGD/R conditions to mimic an in vitro CI model. Before OGD/R induction, NSCs were transfected with vector or shRNA against miR-200a to overexpress or suppress miR-200a expression...
2017: PloS One
https://www.readbyqxmd.com/read/28222108/oxidative-stress-mediated-nf%C3%AE%C2%BAb-phosphorylation-upregulates-p62-sqstm1-and-promotes-retinal-pigmented-epithelial-cell-survival-through-increased-autophagy
#8
Chunjuan Song, Sayak K Mitter, Xiaoping Qi, Eleni Beli, Haripriya V Rao, Jindong Ding, Colin S Ip, Hongmei Gu, Debra Akin, William A Dunn, Catherine Bowes Rickman, Alfred S Lewin, Maria B Grant, Michael E Boulton
p62 is a scaffolding adaptor implicated in the clearance of protein aggregates by autophagy. Reactive oxygen species (ROS) can either stimulate or inhibit NFκB-mediated gene expression influencing cellular fate. We studied the effect of hydrogen peroxide (H2O2)-mediated oxidative stress and NFκB signaling on p62 expression in the retinal pigment epithelium (RPE) and investigated its role in regulation of autophagy and RPE survival against oxidative damage. Cultured human RPE cell line ARPE-19 and primary human adult and fetal RPE cells were exposed to H2O2-induced oxidative stress...
2017: PloS One
https://www.readbyqxmd.com/read/28222044/endocrine-system-on-chip-for-a-diabetes-treatment-model
#9
Dao Thi Thuy Nguyen, Danny van Noort, In-Kyung Jeong, Sungsu Park
The endocrine system is a collection of glands producing hormones which, among others, regulates metabolism, growth and development. One important group of endocrine diseases is diabetes, which is caused by a deficiency or diminished effectiveness of endogenous insulin. By using a microfluidic perfused 3D cell-culture chip, we developed an 'endocrine system on chip' to potentially be able to screen drugs for the treatment of diabetes by measuring insulin release over time. Insulin-secreting β-cells are located in the pancreas, while L-cells, located in the small intestines, stimulate insulin secretion...
February 21, 2017: Biofabrication
https://www.readbyqxmd.com/read/28221885/antibacterial-and-antiadhesive-activities-of-extracts-from-edible-plants-against-soft-drink-spoilage-by-asaia-spp
#10
Hubert Antolak, Agata Czyzowska, Dorota Kregiel
This study was conducted to investigate the antibacterial and antiadhesive activities of ethanol extracts from five edible plant parts: cinnamon bark ( Cinnamomum zeylanicum ), licorice root ( Glycyrrhiza radix ), nettle leaves ( Urtica dioica ), green tea leaves ( Camellia sinensis ), and elderberry flowers ( Sambucus nigra ). The chemical constituents of the extracts were identified using high-performance liquid chromatography and liquid chromatography plus mass spectrometry. Six strains of Asaia lannensis and Asaia bogorensis bacteria isolated from spoiled commercial fruit-flavored noncarbonated mineral water were used...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221198/red-cell-transfusion-associated-hemolysis-in-cardiac-surgery-an-observational-cohort-study
#11
Keyvan Karkouti, Jeannie L Callum, Jason P Acker, Paul Yip, Vivek Rao
BACKGROUND: Red cell viability is impaired during storage, resulting in excess hemolysis during storage and after transfusion. As a result, transfusions may oversaturate the hemoglobin clearance pathways, resulting in cell-free hemoglobin and iron toxicity in susceptible patients, such as those undergoing cardiac surgery with cardiopulmonary bypass. To explore this hypothesis, we assessed the relationship of red cell transfusions with cell-free hemoglobin and transferrin saturation levels in a consecutive cohort of cardiac surgical patients...
February 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28221044/tunable-volumetric-density-and-porous-structure-of-spherical-poly-%C3%A9-caprolactone-microcarriers-as-applied-in-human-mesenchymal-stem-cell-expansion
#12
Jian Li, Alan Tin-Lun Lam, Jessica Pei Wen Toh, Shaul Reuveny, Steve Kah-Weng Oh, William R Birch
Polymeric microspheres may serve as microcarrier matrices, for the expansion of anchorage-dependent stem cells. They require surface properties that both promote initial cell adhesion and the subsequent spreading of cells, which is a prerequisite for successful expansion. When implemented in a three-dimensional culture environment, under agitation, their suspension under low shear rates depends on the microcarriers having a modest negative buoyancy, with a density of 1.02-1.05 g/cm(3). Bioresorbable polycaprolactone (PCL), with a density of 1...
February 21, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28220834/stellera-chamaejasme-and-its-constituents-induce-cutaneous-wound-healing-and-anti-inflammatory-activities
#13
Myungsuk Kim, Hee Ju Lee, Ahmad Randy, Ji Ho Yun, Sang-Rok Oh, Chu Won Nho
Stellera chamaejasme L. (Thymelaeaceae) is a perennial herb that is widely used in traditional Chinese medicine to treat tumours, tuberculosis and psoriasis. S. chamaejasme extract (SCE) possesses anti-inflammatory, analgesic and wound healing activities; however, the effect of S. chamaejasme and its active compounds on cutaneous wound healing has not been investigated. We assessed full-thickness wounds of Sprague-Dawley (SD) rats and topically applied SCE for 2 weeks. In vitro studies were performed using HaCaT keratinocytes, Hs68 dermal fibroblasts and RAW 264...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220818/labeling-adipose-derived-stem-cell-sheet-by-ultrasmall-super-paramagnetic-fe3o4-nanoparticles-and-magnetic-resonance-tracking-in-vivo
#14
Shukui Zhou, Ting Yin, Qingsong Zou, Kaile Zhang, Guo Gao, Joseph G Shapter, Peng Huang, Qiang Fu
Cell sheet therapy has emerged as a potential therapeutic option for reparation and reconstruction of damaged tissues and organs. However, an effective means to assess the fate and distribution of transplanted cell sheets in a serial and noninvasive manner is still lacking. To investigate the feasibility of tracking Adipose derived stem cells (ADSCs) sheet in vivo using ultrasmall super-paramagnetic Fe3O4 nanoparticles (USPIO), canine ADSCs were cultured and incubated with USPIO and 0.75 μg/ml Poly-L-Lysine (PLL) for 12 h...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220786/intrauterine-zika-virus-infection-of-pregnant-immunocompetent-mice-models-transplacental-transmission-and-adverse-perinatal-outcomes
#15
Meghan S Vermillion, Jun Lei, Yahya Shabi, Victoria K Baxter, Nathan P Crilly, Michael McLane, Diane E Griffin, Andrew Pekosz, Sabra L Klein, Irina Burd
Zika virus (ZIKV) crosses the placenta and causes congenital disease. Here we develop an animal model utilizing direct ZIKV inoculation into the uterine wall of pregnant, immunocompetent mice to evaluate transplacental transmission. Intrauterine inoculation at embryonic day (E) 10, but not E14, with African, Asian or American strains of ZIKV reduces fetal viability and increases infection of placental and fetal tissues. ZIKV inoculation at E10 causes placental inflammation, placental dysfunction and reduces neonatal brain cortical thickness, which is associated with increased activation of microglia...
February 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28220783/an-integrative-approach-unveils-fosl1-as-an-oncogene-vulnerability-in-kras-driven-lung-and-pancreatic-cancer
#16
Adrian Vallejo, Naiara Perurena, Elisabet Guruceaga, Pawel K Mazur, Susana Martinez-Canarias, Carolina Zandueta, Karmele Valencia, Andrea Arricibita, Dana Gwinn, Leanne C Sayles, Chen-Hua Chuang, Laura Guembe, Peter Bailey, David K Chang, Andrew Biankin, Mariano Ponz-Sarvise, Jesper B Andersen, Purvesh Khatri, Aline Bozec, E Alejandro Sweet-Cordero, Julien Sage, Fernando Lecanda, Silve Vicent
KRAS mutated tumours represent a large fraction of human cancers, but the vast majority remains refractory to current clinical therapies. Thus, a deeper understanding of the molecular mechanisms triggered by KRAS oncogene may yield alternative therapeutic strategies. Here we report the identification of a common transcriptional signature across mutant KRAS cancers of distinct tissue origin that includes the transcription factor FOSL1. High FOSL1 expression identifies mutant KRAS lung and pancreatic cancer patients with the worst survival outcome...
February 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28220519/red-blood-cell-concentrates-treated-with-the-amustaline-s-303-pathogen-reduction-system-and-stored-for-35-days-retain-post-transfusion-viability-results-of-a-two-centre-study
#17
J A Cancelas, J L Gottschall, N Rugg, S Graminske, M A Schott, A North, N Huang, N Mufti, A Erickson, S Rico, L Corash
BACKGROUND AND OBJECTIVES: Pathogen reduction technology using amustaline (S-303) was developed to reduce the risk of transfusion-transmitted infection and adverse effects of residual leucocytes. In this study, the viability of red blood cells (RBCs) prepared with a second-generation process and stored for 35 days was evaluated in two different blood centres. MATERIALS AND METHODS: In a single-blind, randomized, controlled, two-period crossover study (n = 42 healthy subjects), amustaline-treated (Test) or Control RBCs were prepared in random sequence and stored for 35 days...
February 21, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28220405/altered-cellular-homeostasis-in-murine-mps-i-fibroblasts-evidence-of-cell-specific-physiopathology
#18
Gustavo Monteiro Viana, Cinthia Castro do Nascimento, Edgar Julian Paredes-Gamero, Vânia D'Almeida
Mucopolysaccharidosis type I (MPS I), a rare autosomal recessive disease, is caused by a deficiency of the lysosomal enzyme alfa-L-iduronidase. Impaired enzyme activity promotes glycosaminoglycans accumulation in several tissues and organs, leading to complex multisystemic complications. Several studies using animal models indicated different intracellular pathways involving MPS I physiopathology; however, the exact mechanisms underlying this syndrome are still not understood. Previous results from our group showed alterations in ionic homeostasis and cell viability of splenocytes and macrophages in Idua-/- mice...
February 21, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28220060/a-pulsed-electromagnetic-field-protects-against-glutamate-induced-excitotoxicity-by-modulating-the-endocannabinoid-system-in-ht22-cells
#19
Xin Li, Haoxiang Xu, Tao Lei, Yuefan Yang, Da Jing, Shuhui Dai, Peng Luo, Qiaoling Xu
Glutamate-induced excitotoxicity is common in the pathogenesis of many neurological diseases. A pulsed electromagnetic field (PEMF) exerts therapeutic effects on the nervous system, but its specific mechanism associated with excitotoxicity is still unknown. We investigated the role of PEMF exposure in regulating glutamate-induced excitotoxicity through the endocannabinoid (eCB) system. PEMF exposure improved viability of HT22 cells after excitotoxicity and reduced lactate dehydrogenase release and cell death...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28219829/chemical-and-cytotoxic-analyses-of-brown-brazilian-propolis-apis-mellifera-and-its-in-vitro-activity-against-itraconazole-resistant-sporothrix-brasiliensis
#20
Stefanie B Waller, Cristina M Peter, Jéssica F Hoffmann, Tony Picoli, Luiza da G Osório, Fábio Chaves, João L Zani, Renata O de Faria, João R B de Mello, Mário C A Meireles
This study aimed to evaluate the chemical composition and cytotoxic activity of brown Brazilian propolis and its in vitro activity against itraconazole-resistant Sporothrix brasiliensis from animal sporotrichosis. Propolis was acquired commercially and prepared as a hydroalcoholic extract. Chemical analysis was evaluated by liquid chromatography coupled to mass spectrometry of ultra-efficiency. The cell viability was evaluated by MTT test in MDBK cells of 50 to 0.09 μg/mL. For antifungal tests, twenty isolates of Sporothrix brasiliensis from dogs (n = 11) and cats (n = 9) with sporotrichosis were tested to itraconazole (16-0...
February 17, 2017: Microbial Pathogenesis
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