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https://www.readbyqxmd.com/read/28441056/evaluation-of-gastric-emptying-time-gastrointestinal-transit-time-sedation-score-and-nausea-score-associated-with-intravenous-constant-rate-infusion-of-lidocaine-hydrochloride-in-clinically-normal-dogs
#1
Rebecca A Johnson, Katharine R Kierski, Brian G Jones
OBJECTIVE To quantify nausea and sedation scores, gastric emptying time, and gastrointestinal transit time after IV administration of a lidocaine hydrochloride bolus followed by a constant rate infusion (CRI) in clinically normal dogs. ANIMALS 6 Beagles. PROCEDURES In a crossover study, dogs were fed thirty 1.5-mm barium-impregnated spheres (BIPS) and received a saline (0.9% NaCl) solution bolus (0.05 mL/kg) IV (time 0) followed by a CRI at 10 mL/h, a lidocaine bolus (1 mg/kg) IV followed by a CRI at 25 μg/kg/min, or a lidocaine bolus (1 mg/kg) IV followed by a CRI at 50 μg/kg/min; CRIs were for 12 hours...
May 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28440502/marine-actinomycete-crude-extracts-with-potent-trail-resistance-overcoming-activity-against-breast-cancer-cells
#2
Mohammed I Y Elmallah, Olivier Micheau, Mennat Allah G Eid, Ali M S Hebishy, Mohamed S Abdelfattah
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a promising anticancer agent, as it can kill tumor cells selectively. In our search of bioactive natural products to overcome TRAIL-resistance, we isolated 47 actinomycete strains from different sediments and seawater samples collected from the Red Sea coast in Egypt and found four crude extracts (EGY1, EGY3, EGY24 and EGY34) displaying TRAIL sensitizing activity in the resistant breast cancer cell line MDA-MB-231. None of these crude extracts exhibited cytotoxic effect on normal mouse embryonic fibroblasts (MEF), with the exception of EGY34...
April 21, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28439080/ets-related-gene-mediated-androgen-receptor-aggregation-and-endoplasmic-reticulum-stress-in-prostate-cancer-development
#3
Taduru L Sreenath, Shiela S Macalindong, Natallia Mikhalkevich, Shashwat Sharad, Ahmed Mohamed, Denise Young, Talaibek Borbiev, Charles Xavier, Rishita Gupta, Muhammad Jamal, Kevin Babcock, Shyh-Han Tan, Marja T Nevalainen, Albert Dobi, Gyorgy Petrovics, Isabell A Sesterhenn, Inger L Rosner, Charles J Bieberich, Peter Nelson, Valeri Vasioukhin, Shiv Srivastava
Mechanistic studies of deregulated ERG in prostate cancer and other cancers continue to enhance its role in cancer biology and its utility as a biomarker and therapeutic target. Here, we show that ERG, through its physical interaction with androgen receptor, induces AR aggregation and endoplasmic reticulum stress in the prostate glands of ERG transgenic mice. Histomorphological alterations and the expression of ER stress sensors Atf6, Ire1α, Perk, their downstream effectors Grp78/BiP and eIF2α in ERG transgenic mouse prostate glands indicate the presence of chronic ER stress...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28437620/american-association-of-clinical-endocrinologists-and-american-college-of-endocrinology-guidelines-for-management-of-dyslipidemia-and-prevention-of-cardiovascular-disease
#4
Paul S Jellinger, Yehuda Handelsman, Paul D Rosenblit, Zachary T Bloomgarden, Vivian A Fonseca, Alan J Garber, George Grunberger, Chris K Guerin, David S H Bell, Jeffrey I Mechanick, Rachel Pessah-Pollack, Kathleen Wyne, Donald Smith, Eliot A Brinton, Sergio Fazio, Michael Davidson
OBJECTIVE: The development of these guidelines is mandated by the American Association of Clinical Endocrinologists (AACE) Board of Directors and American College of Endocrinology (ACE) Board of Trustees and adheres with published AACE protocols for the standardized production of clinical practice guidelines (CPGs). METHODS: Recommendations are based on diligent reviews of the clinical evidence with transparent incorporation of subjective factors, according to established AACE/ACE guidelines for guidelines protocols...
April 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28437467/mutant-uromodulin-expression-leads-to-altered-homeostasis-of-the-endoplasmic-reticulum-and-activates-the-unfolded-protein-response
#5
Céline Schaeffer, Stefania Merella, Elena Pasqualetto, Dejan Lazarevic, Luca Rampoldi
Uromodulin is the most abundant urinary protein in physiological conditions. It is exclusively produced by renal epithelial cells lining the thick ascending limb of Henle's loop (TAL) and it plays key roles in kidney function and disease. Mutations in UMOD, the gene encoding uromodulin, cause autosomal dominant tubulointerstitial kidney disease uromodulin-related (ADTKD-UMOD), characterised by hyperuricemia, gout and progressive loss of renal function. While the primary effect of UMOD mutations, retention in the endoplasmic reticulum (ER), is well established, its downstream effects are still largely unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28435036/costunolide-increases-osteoblast-differentiation-via-atf4-dependent-ho-1-expression-in-c3h10t1-2-cells
#6
Wan-Jin Jeon, Kyeong-Min Kim, Eun-Jung Kim, Won-Gu Jang
AIMS: Costunolide is a sesquiterpene lactones used in many herbal medicines, with well-established anti-inflammatory and anti-oxidant functions modulating endoplasmic reticulum (ER) stress pathways, and which promotes the expression of anti-oxidant genes. The aim of this study is to investigate whether costunolide is involved in osteoblast differentiation and, determine the mechanisms of differentiation in mesenchymal stem cells. MAIN METHODS: The cytotoxicity of costunolide was identified using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay...
April 20, 2017: Life Sciences
https://www.readbyqxmd.com/read/28429845/following-nature-s-roadmap-folding-factors-from-plasma-cells-led-to-improvements-in-antibody-secretion-in-s-cerevisiae
#7
Essi V Koskela, Jorg C de Ruijter, Alexander D Frey
Therapeutic protein production in yeast is a reality in industry with an untapped potential to expand to more complex proteins, such as full-length antibodies. Despite multiple numerous engineering approaches, cellular limitations are preventing the use of Saccharomyces cerevisiae as the titers of recombinant antibodies are currently not competitive. Instead of a host specific approach, we demonstrate the possibility of adopting the features from native producers of antibodies, plasma cells, to improve antibody production in yeast...
April 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28428745/decreased-levels-of-foldase-and-chaperone-proteins-are-associated-with-an-early-onset-amyotrophic-lateral-sclerosis
#8
Melania Filareti, Silvia Luotti, Laura Pasetto, Mauro Pignataro, Katia Paolella, Paolo Messina, Elisabetta Pupillo, Massimiliano Filosto, Christian Lunetta, Jessica Mandrioli, Giuseppe Fuda, Andrea Calvo, Adriano Chiò, Massimo Corbo, Caterina Bendotti, Ettore Beghi, Valentina Bonetto
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterized by a progressive upper and lower motor neuron degeneration. One of the peculiar clinical characteristics of ALS is the wide distribution in age of onset, which is probably caused by different combinations of intrinsic and exogenous factors. We investigated whether these modifying factors are converging into common pathogenic pathways leading either to an early or a late disease onset. This would imply the identification of phenotypic biomarkers, that can distinguish the two populations of ALS patients, and of relevant pathways to consider in a therapeutic intervention...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28426278/hop3-a-new-regulator-of-the-er-stress-response-in-arabidopsis-with-possible-implications-in-plant-development-and-response-to-biotic-and-abiotic-stresses
#9
Nuria Fernández-Bautista, Lourdes Fernández-Calvino, Alfonso Muñoz, M Mar Castellano
HOPs (heat shock protein 70 (HSP70)-heat shock protein 90 (HSP90) organizing proteins) are a highly conserved family of cytosolic cochaperones. In a recent study we showed that HOP3, one member of the HOP family in Arabidopsis, plays an essential role during endoplasmic reticulum (ER) stress in plants. Interestingly, we also demonstrated that AtHOP3 interacts with binding immunoglobulin protein (BiP), a major ER-resident chaperone. All these data suggest that HOP3 could assist BiP in protein folding in the ER...
April 20, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28424579/grp78-at-the-centre-of-the-stage-in-cancer-and-neuroprotection
#10
REVIEW
Caty Casas
The 78-kDa glucose-regulated protein GRP78, also known as BiP and HSP5a, is a multifunctional protein with activities far beyond its well-known role in the unfolded protein response (UPR) which is activated after endoplasmic reticulum (ER) stress in the cells. Most of these newly discovered activities depend on its position within the cell. GRP78 is located mainly in the ER, but it has also been observed in the cytoplasm, the mitochondria, the nucleus, the plasma membrane, and secreted, although it is dedicated mostly to engage endogenous cytoprotective processes...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28423496/mtor-inhibitors-activate-perk-signaling-and-favor-viability-of-gastrointestinal-neuroendocrine-cell-lines
#11
Patricia Freis, Julien Bollard, Justine Lebeau, Patrick Massoma, Joëlle Fauvre, Cécile Vercherat, Thomas Walter, Serge Manié, Colette Roche, Jean-Yves Scoazec, Carole Ferraro-Peyret
mTOR and Unfolded Protein Response (UPR) are two signaling pathways frequently activated in cancer cells. The mTOR pathway has been shown to be up-regulated in most gastroenteropancreatic neuroendocrine tumors. In contrast, little is known about the UPR status in neoplastic neuroendocrine cells. However, these hormone-producing cells are likely to present distinctive adaptations of this pathway, as other secretory cells. We therefore analyzed the status of the three axes of UPR and their relation to mTOR pathway in two gastrointestinal neuroendocrine tumors (GI-NET) cell lines STC-1 and GluTag...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415750/xanthohumol-induces-paraptosis-of-leukemia-cells-through-p38-mitogen-activated-protein-kinase-signaling-pathway
#12
Xiangquan Mi, Chunming Wang, Chao Sun, Xu Chen, Xiang Huo, Yiming Zhang, Gang Li, Bo Xu, Jun Zhang, Jianxin Xie, Zhenhua Wang, Ji Li
Xanthohumol as a natural polyphenol demonstrates an anticancer activity, but its underlying mechanism remains unclear. In this study, we showed that xanthohumol (XN) induces paraptosis of leukemia cells. The paraptosis is one cell death which is characterized by dilation of the endoplasmic reticulum and/or mitochondria. The results demonstrated that XN treatment significantly inhibited cell proliferation and triggered extensive cytoplasmic vacuolation of HL-60 leukemia cells, but it did not cause the cleavage of caspase-3 protein or apoptosis...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412329/comparison-of-pro-amnesic-efficacy-of-scopolamine-biperiden-and-phencyclidine-by-using-passive-avoidance-task-in-cd-1-mice
#13
Natalia Malikowska, Kinga Sałat, Adrian Podkowa
INTRODUCTION: Memory disorders accompany numerous diseases and therapies, and this is becoming a growing medical issue worldwide. Currently, various animal models of memory impairments are available; however, many of them require high financial outlay and/or are time-consuming. A simple way to achieve an efficient behavioral model of cognitive disorders is to inject defined drug that has pro-amnesic properties. Since the involvement of cholinergic and glutamatergic neurotransmission in cognition is well established, the utilization of a nonselective muscarinic receptor antagonist, scopolamine (SCOP), a selective M1 muscarinic receptor antagonist, biperiden (BIP), and a non-competitive N-methyl-d-aspartate (NMDA) receptor antagonist, phencyclidine (PCP) seems to be reliable tools to induce amnesia...
April 13, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28407361/influence-of-tanshinone-iia-on-apoptosis-of-human-esophageal-carcinoma-eca-109-cells-and-its-molecular-mechanism
#14
Yan Zhang, Shan Li, Hang He, Qianqian Han, Baiyan Wang, Yanqin Zhu
BACKGROUND: Previous studies have shown that Tanshinone (Tan) IIA exerts obvious antitumor efficacy; however, its molecular mechanism remains unclear. This study was conducted to identify the influence of Tan IIA on Eca-109 cell apoptosis, explore its molecular mechanism, and provide a theoretical basis for clinical application. METHODS: Eca-109 cells were cultured in vitro and treated with different concentrations of Tan IIA. Morphologic changes were viewed under inverted fluorescence microscope with dual acridine orange/ethidium bromide staining assay...
April 13, 2017: Thoracic Cancer
https://www.readbyqxmd.com/read/28402965/curcumin-enhances-the-effects-of-irinotecan-on-colorectal-cancer-cells-through-the-generation-of-reactive-oxygen-species-and-activation-of-the-endoplasmic-reticulum-stress-pathway
#15
Yan-Feng Huang, Da-Jian Zhu, Xiao-Wu Chen, Qi-Kang Chen, Zhen-Tao Luo, Chang-Chun Liu, Guo-Xin Wang, Wei-Jie Zhang, Nv-Zhu Liao
Although initially effective against metastatic colorectal cancer (CRC), irinotecan-based chemotherapy leads to resistance and adverse toxicity. Curcumin is well known for its anti-cancer effects in many cancers, including CRC. Here, we describe reactive oxygen species (ROS) generation and endoplasmic reticulum (ER) stress as important mechanisms by which curcumin enhances irinotecan's effects on CRC cells. CRC cell lines were treated with curcumin and/or irinotecan for 24 h, and then evaluated using cell proliferation assays, cell apoptosis assays, cell cycle analysis, intracellular Ca2+ measurements, ROS measurements and immunoblotting for key ER stress-related proteins...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28401474/tracking-effects-of-sil1-increase-taking-a-closer-look-beyond-the-consequences-of-elevated-expression-level
#16
Thomas Labisch, Stephan Buchkremer, Vietxuan Phan, Laxmikanth Kollipara, Christian Gatz, Chris Lentz, Kay Nolte, Jörg Vervoorts, José Andrés González Coraspe, Albert Sickmann, Stephanie Carr, René P Zahedi, Joachim Weis, Andreas Roos
SIL1 acts as a co-chaperone for the major ER-resident chaperone BiP and thus plays a role in many BiP-dependent cellular functions such as protein-folding control and unfolded protein response. Whereas the increase of BiP upon cellular stress conditions is a well-known phenomenon, elevation of SIL1 under stress conditions was thus far solely studied in yeast, and different studies indicated an adverse effect of SIL1 increase. This is seemingly in contrast with the beneficial effect of SIL1 increase in surviving neurons in neurodegenerative disorders such as amyotrophic lateral sclerosis and Alzheimer's disease...
April 11, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28400912/impact-on-autophagy-and-ultraviolet-b-induced-responses-of-treatment-with-the-mtor-inhibitors-rapamycin-everolimus-torin-1-and-pp242-in-human-keratinocytes
#17
Song Xu, Li Li, Min Li, Mengli Zhang, Mei Ju, Xu Chen, Heng Gu
The mechanistic target of Rapamycin (MTOR) protein is a crucial signaling regulator in mammalian cells that is extensively involved in cellular biology. The function of MTOR signaling in keratinocytes remains unclear. In this study, we detected the MTOR signaling and autophagy response in the human keratinocyte cell line HaCaT and human epidermal keratinocytes treated with MTOR inhibitors. Moreover, we detected the impact of MTOR inhibitors on keratinocytes exposed to the common carcinogenic stressors ultraviolet B (UVB) and UVA radiation...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28393560/evaluating-polyethyleneimine-dna-nanoparticles-mediated-damage-to-cellular-organelles-using-endoplasmic-reticulum-stress-profile
#18
Maryam Dabbaghi, Reza Kazemi Oskuee, Khadijeh Hashemi, Amir Afkhami Goli
Gene therapy has emerged as an influential tool for treating the genetic and specific acquired disorders. Among all kinds of gene delivery systems, the cationic polymer polyethyleneimine (PEI) is considered as a promising non-viral gene delivery vector, although there are still concerns about its magnitude of cytotoxicity. While any cell insult leads to unfolded/misfolded protein accumulation and its consequent unfold protein response, evaluating the expression profile of ER-stress genes would be a sensitive indicator of cell stress...
April 10, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28389754/roles-of-grp78-in-female-mammalian-reproduction
#19
Cheng Zhang
The glucose-regulated protein (GRP78) also referred to as immunoglobulin heavy chain binding protein (Bip) is one of the best characterized endoplasmic reticulum (ER) chaperone proteins, which belongs to the heat-shock protein (HSP) family. GRP78 as a central regulator of ER stress (ERS) plays many important roles in cell survival and apoptosis through controlling the activation of transmembrane ERS sensors: PKR-like ER-associated kinase (PERK), inositol requiring kinase 1 (IRE1), and activating transcription factor 6 (ATF6)...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28389244/colostrum-oxytocin-modulates-cellular-stress-response-inflammation-and-autophagy-markers-in-newborn-rat-gut-villi
#20
Benjamin Y Klein, Hadassah Tamir, Robert J Ludwig, Sara B Glickstein, Martha G Welch
Little is known about the role of oxytocin (OT) in colostrum during early gut colonization. We previously showed that transient OT receptor (OTR) expression on newborn rat enterocytes coincides with the milk-suckling period, and that OT activates endoplasmic reticulum stress sensors in cultured enterocytes. Here, we explored whether colostrum-OT attenuates stress in newborn villi primed and unprimed by colostrum by measuring levels of stress markers including BiP (an ER chaperone), eIF2a (translation initiation factor), and pPKR (eIF2a kinase)...
May 20, 2017: Biochemical and Biophysical Research Communications
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