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Calcium liver

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https://www.readbyqxmd.com/read/28646724/zinc-and-calcium-alter-the-relationship-between-mitochondrial-respiration-ros-and-membrane-potential-in-rainbow-trout-oncorhynchus-mykiss-liver-mitochondria
#1
Mahmoud S Sharaf, Don Stevens, Collins Kamunde
At excess levels, zinc (Zn) disrupts mitochondrial functional integrity and induces oxidative stress in aquatic organisms. Although much is known about the modulation of Zn toxicity by calcium (Ca) in fish, their interactions at the mitochondrial level have scarcely been investigated. Here we assessed the individual and combined effects of Zn and Ca on the relationship between mitochondrial respiration, ROS and membrane potential (ΔΨmt) in rainbow trout liver mitochondria. We tested if cation uptake through the mitochondrial calcium uniporter (MCU) is a prerequisite for Zn- and/or Ca-induced alteration of mitochondrial function...
June 12, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28644395/optical-tracking-and-digital-quantification-of-beating-behavior-in-bioengineered-human-cardiac-organoids
#2
Mahesh Devarasetty, Steven Forsythe, Thomas D Shupe, Shay Soker, Colin E Bishop, Anthony Atala, Aleksander Skardal
Organoid and organ-on-a-chip technologies are rapidly advancing towards deployment for drug and toxicology screening applications. Liver and cardiac toxicities account for the majority of drug candidate failures in human trials. Liver toxicity generally produces liver cell death, while cardiac toxicity causes adverse changes in heart beat kinetics. In traditional 2D cultures, beating kinetics can be measured by electrode arrays, but in some 3D constructs, quantifying beating kinetics can be more challenging...
June 23, 2017: Biosensors
https://www.readbyqxmd.com/read/28638347/bile-acids-do-not-contribute-to-the-altered-calcium-homeostasis-of-platelets-from-rats-with-biliary-cirrhosis
#3
Paola Romecín, Esther G Navarro, M Clara Ortiz, David Iyú, Joaquín García-Estañ, Noemí M Atucha
Previously, we have found that intracellular calcium homeostasis is altered in platelets from an experimental model of liver cirrhosis, the bile-duct ligated (BDL) rat; these alterations are compatible with the existence of a hypercoagulable state and related to an enhanced intracellular calcium release evoked by thrombin and an increased amount of calcium stored in the intracellular organelles. In the present study we have investigated the role of bile acids in those alterations of the BDL cirrhotic model...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28619996/farnesoid-x-receptor-and-liver-x-receptor-ligands-initiate-formation-of-coated-platelets
#4
Amanda J Unsworth, Alexander P Bye, Dionne S Tannetta, Michael J R Desborough, Neline Kriek, Tanya Sage, Harriet E Allan, Marilena Crescente, Parveen Yaqoob, Timothy D Warner, Chris I Jones, Jonathan M Gibbins
OBJECTIVES: The liver X receptors (LXRs) and farnesoid X receptor (FXR) have been identified in human platelets. Ligands of these receptors have been shown to have nongenomic inhibitory effects on platelet activation by platelet agonists. This, however, seems contradictory with the platelet hyper-reactivity that is associated with several pathological conditions that are associated with increased circulating levels of molecules that are LXR and FXR ligands, such as hyperlipidemia, type 2 diabetes mellitus, and obesity...
June 15, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28618760/changes-in-the-serum-liver-and-renal-cortical-lipids-and-electrolytes-in-rabbits-with-cisplatin-induced-nephrotoxicity
#5
Abdelgayoum Ahmed Abdel-Gayoum, Mohamed Hamza Sulaiman Ahmida
BACKGROUND/AIM: Cisplatin is an anticancer drug that can induce nephrotoxicity. Its toxicity is associated with dyslipidemia and disturbed electrolyte balance. In the present study we investigated the changes in serum lipid profile and electrolyte levels and their contents in kidney and liver tissues of rabbits treated with cisplatin. MATERIALS AND METHODS: Twenty-eight adult male New Zealand White rabbits were used in the experiment. Animals of groups C, P1, and P2 were injected with saline, cisplatin (4...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28615245/the-regulatory-1%C3%AE-subunit-of-protein-kinase-a-modulates-renal-cystogenesis
#6
Hong Ye, Xiaofang Wang, Megan M Constans, Caroline R Sussman, Fouad Chebib, Maria V Irazabal, William F Young, Peter C Harris, Lawrence S Kirschner, Vicente E Torres
The failure of the polycystins (PCs) to function in primary cilia is thought to be responsible for Autosomal Dominant Polycystic Kidney Disease (ADPKD). Primary cilia integrate multiple cellular signaling pathways, including calcium, cAMP, Wnt, and Hedgehog, which control cell proliferation and differentiation. It has been proposed that mutated PCs result in reduced intracellular calcium, which in turn upregulates cAMP, protein kinase A (PKA) signaling, and subsequently other proliferative signaling pathways...
June 14, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28615126/unveiling-the-participation-of-avian-kinin-ornithokinin-and-its-receptors-in-the-chicken-inflammatory-response
#7
Rodrigo Guabiraba, Damien Garrido, Geoffrey Bailleul, Angélina Trotereau, Mélanie Pinaud, Anne-Christine Lalmanach, Nathalie K Chanteloup, Catherine Schouler
Vasoactive peptides are key early mediators of inflammation released through activation of different enzymatic systems. The mammalian kinin-kallikrein (K-KLK) system produces bradykinin (BK) through proteolytic cleavage of a kininogen precursor by enzymes named kallikreins. BK acts through specific ubiquitous G-protein coupled receptors (B1R and B2R) to participate in physiological processes and inflammatory responses, such as activation of mononuclear phagocytes. In chickens, the BK-like nonapeptide ornithokinin (OK) has been shown to promote intracellular calcium increase in embryonic fibroblasts and to be vasodilatory in vivo...
June 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28606764/transcriptional-profiling-of-male-f344-rats-suggests-the-involvement-of-calcium-signaling-in-the-mode-of-action-of-acrylamide-induced-thyroid-cancer
#8
Nikolai L Chepelev, Rémi Gagné, Timothy Maynor, Byron Kuo, Cheryl A Hobbs, Leslie Recio, Carole L Yauk
Acrylamide (AA) exposure in 2-year cancer bioassays leads to thyroid, but not liver, adenomas and adenocarcinomas in rats. Hypothesized modes of action (MOAs) include genotoxicity/mutagenicity, or thyroid hormone dysregulation. To examine the plausibility of these two, or any alternative MOAs, RNA-sequencing was performed on the thyroids and livers of AA-exposed rats, in parallel with measurement of genotoxicity (blood micronucleus and Pig-a mutant frequency) and serum thyroid hormone levels, following the exposure of male Fischer 344/DuCrl rats to 0...
June 9, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28605041/calcium-binding-protein-39-promotes-hepatocellular-carcinoma-growth-and-metastasis-by-activating-erk-signaling-pathway
#9
Lingxi Jiang, Qian Yan, Shuo Fang, Ming Liu, Li Yan, Yun-Fei Yuan, Yan Li, Yinghui Zhu, Jiali Qi, Xiaodong Yang, Dora Lai Wan Kwong, Xin-Yuan Guan
Calcium binding protein (CAB39) is a key regulator of a group of STE20 kinases. Here we report that CAB39 was frequently up-regulated in hepatocellular carcinoma (HCC), which was significantly associated with tumor metastasis (P=0.000), poorer disease-free survival rate (P=0.027) and poor prognosis (P=0.000). Ectopic expression of CAB39 in immortalized human liver cell line LO2 and HCC cell lines QGY-7703 and BEL-7402 could increase foci formation, colony formation in soft agar, tumor formation in nude mice and cell motility...
June 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28597792/implications-of-the-calcium-sensing-receptor-in-ischemia-reperfusion
#10
François Paquot, Justine Huart, Jean-Olivier Defraigne, Jean-Marie Krzesinski, François Jouret
The calcium-sensing receptor (CaSR) is a G protein-coupled receptor (GPCR) which was first isolated from bovine parathyroid glands. Its complex structure has been well characterized, which helped to better understand its function. The CaSR activity can be modulated by various ligands, either activators (also called "calcimimetics") or inhibitors (or "calcilytics"). The main role of the CaSR concerns Ca(2+) homeostasis. In bone, intestine and kidney, the CaSR acts as a sensor for extracellular ionized Ca(2+) concentration ([Ca(2+)]e) to keep it stable...
April 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28596111/high-fat-diet-disrupts-endoplasmic-reticulum-calcium-homeostasis-in-the-rat-liver
#11
Emily S Wires, Kathleen A Trychta, Susanne Bäck, Agnieszka Sulima, Kenner C Rice, Brandon K Harvey
BACKGROUND & AIMS: Disruption to endoplasmic reticulum (ER) calcium homeostasis has been implicated in obesity, however, the ability to longitudinally monitor ER calcium fluctuations has been challenging with prior methodologies. We recently described the development of a Gaussia luciferase (GLuc)- based reporter protein responsive to ER calcium depletion (GLuc-SERCaMP) and investigated the effect of a high fat diet on ER calcium homeostasis. METHODS: A GLuc-based reporter cell line was treated with palmitate, a free fatty acid (FFA)...
June 5, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28588665/role-of-s100a3-in-human-hepatocellular-carcinoma-and-the-anticancer-effect-of-sodium-cantharidinate
#12
Ran Tao, Zhong-Feng Wang, Wei Qiu, Yu-Fang He, Wei-Qun Yan, Wen-Yi Sun, Hai-Jun Li
The fifth most common cancer worldwide is hepatocellular carcinoma (HCC), which has an annual mortality rate of ~800,000. Although surgical procedures for HCC, such as hepatic resection and liver transplantation, have progressed and the outcomes of patients have improved, HCC is still characterized by frequent recurrence, even after liver transplantation. In the present study the expression of the protein coding gene, S100 calcium binding protein A3 (S100A3), was observed in 62 HCC tissues and tumor-surrounding tissues...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28584494/efficacy-and-tolerability-of-antihypertensive-drugs-in-diabetic-and-nondiabetic-patients
#13
Maria Aslam, Mobasher Ahmad, Fizza Mobasher
OBJECTIVES OF THE STUDY: The aim of the study was to compare the efficacy and tolerability of different classes of antihypertensive drugs in diabetic and nondiabetic patients (NDPs) with essential hypertension. MATERIAL AND METHODS: The study was conducted in Mayo Hospital, Punjab Institute of Cardiology, and National Defence Hospital, Lahore, Pakistan, on 200 hypertensive patients with diabetes and 230 hypertensive patients without (Three hospitals) diabetes. Both male and female patients of age between 30 and 80 years with systolic blood pressure (SBP) above 130 mmHg and diastolic blood pressure (DBP) above 80 mmHg were enrolled in the study...
January 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/28580281/glucagon-like-peptide-2-promotes-gallbladder-refilling-via-a-tgr5-independent-glp-2r-dependent-pathway
#14
Bernardo Yusta, Dianne Matthews, Grace B Flock, John R Ussher, Brigitte Lavoie, Gary M Mawe, Daniel J Drucker
OBJECTIVE: Glucagon-like peptides (GLPs) are secreted from enteroendocrine cells in response to nutrients and bile acids and control metabolism via actions on structurally-related yet distinct G protein coupled receptors. GLP-1 regulates gut motility, appetite, islet function, and glucose homeostasis, whereas GLP-2 enhances intestinal nutrient absorption. GLP-1R agonists are used to treat diabetes and obesity, and a GLP-2R agonist is approved to treat short bowel syndrome. Unexpectedly, reports of gallbladder disease have been associated with the use of both GLP-1R and GLP-2R agonists and after bariatric surgery, although the mechanisms remain unknown...
June 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28569571/curcumin-inhibits-oxidative-stress-induced-trpm2-channel-activation-calcium-ion-entry-and-apoptosis-values-in-sh-sy5y-neuroblastoma-cells-involvement-of-transfection-procedure
#15
Ahmi Öz, Ömer Çelik
Transient Receptor Potential (TRP) channels are mostly Ca(2+) permeable cation channels. Transient Receptor Potential Melastatin-like 2 (TRPM2) is expressed in neurological tissues such as brain, dorsal root ganglia (DRG) neurons, hippocampus and also liver, heart and kidney. The SH-SY5Y cells are mostly used as a cellular model of neurodegenerative diseases, Alzheimer's and Parkinson's diseases. Curcumin, shows phenolic structure, synthesized by Curcuma longa L. (turmeric), has powerful non-enzymatically antioxidant effects compared with Vitamin E...
June 1, 2017: Molecular Membrane Biology
https://www.readbyqxmd.com/read/28544261/mechanical-properties-structure-bioadhesion-and-biocompatibility-of-pectin-hydrogels
#16
Pavel A Markov, Nikita S Krachkovsky, Eugene A Durnev, Ekaterina A Martinson, Sergey G Litvinets, Sergey V Popov
The surface structure, biocompatibility, textural, and adhesive properties of calcium hydrogels derived from 1, 2, and 4% solutions of apple pectin were examined in this study. An increase in the pectin concentration in hydrogels was shown to improve their stability toward elastic and plastic deformation. The elasticity of pectin hydrogels, measured as Young's modulus, ranged from 6 to 100 kPa. The mechanical properties of the pectin hydrogels were shown to correspond to those of soft tissues. The characterization of surface roughness in terms of the roughness profile (Ra) and the root-mean-square deviation of the roughness profile (Rq) indicated an increased roughness profile for hydrogels depending on their pectin concentration...
May 22, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28543743/detection-and-localization-of-regucalcin-in-spermatozoa-of-water-buffalo-bubalus-bubalis-a-calcium-regulating-multifunctional-protein
#17
H Pillai, A M Shende, M S Parmar, J Thomas, H S Kartha, G Taru Sharma, S K Ghosh, S K Bhure
Regucalcin (RGN) is a calcium-regulating, anti-apoptotic, antioxidative and antiproliferative multifunctional protein predominantly seen in liver and kidney. All these functions are very crucial during spermatogenesis and sperm maturation process until fertilization of the ovum. Although many studies have reported the wide distribution of regucalcin in the male reproductive tract of the rat, human and bovine, its presence in spermatozoa is yet to be demonstrated wherein calcium has a pivotal role in the transport, capacitation, acrosomal reaction and further fusion with ova...
May 24, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28539583/transient-receptor-potential-canonical-5-channels-plays-an-essential-role-in-hepatic-dyslipidemia-associated-with-cholestasis
#18
Khadija M Alawi, David Tandio, Jin Xu, Pratish Thakore, Georgia Papacleovoulou, Elizabeth S Fernandes, Cristina Legido-Quigley, Catherine Williamson, Susan D Brain
Transient receptor potential canonical 5 (TRPC5), a calcium-permeable, non-selective cation channel is expressed in the periphery, but there is limited knowledge of its regulatory roles in vivo. Endogenous modulators of TRPC5 include a range of phospholipids that have an established role in liver disease, including lysophosphatidylcholine (LPC). Cholestasis is characterized by impairment of excretion of bile acids, leading to elevation of hepatic bile acids. We investigated the contribution of TRPC5 in a murine model of cholestasis...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28539530/active-form-of-vitamin-d-ameliorates-non-alcoholic-fatty-liver-disease-by-alleviating-oxidative-stress-in-a-high-fat-diet-rat-model
#19
Chong-Gui Zhu, Ya-Xin Liu, Hao Wang, Bao-Ping Wang, Hui-Qi Qu, Bao-Li Wang, Mei Zhu
The purpose of this study was to determine whether treatment using the active form of vitamin D (1,25(OH)2D3) could protect against high-fat diet (HFD)-induced non-alcoholic fatty liver disease (NAFLD) in rats and ameliorate oxidative stress. Male Sprague-Dawley rats were divided into three groups and treated with standard chow, HFD, or HFD plus intraperitoneal injection of 1,25(OH)2D3 (5 μg/kg body weight, twice per week), respectively, for 16 weeks. Serum lipid profiles, hepatic function, intrahepatic lipid, and calcium levels were determined...
May 23, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28535516/citrate-anticoagulation-during-continuous-renal-replacement-therapy
#20
Davide Ricci, Laura Panicali, Maria Grazia Facchini, Elena Mancini
During extracorporeal dialysis, some anticoagulation strategy is necessary to prevent the coagulation of blood. Heparin has historically been used as an anticoagulant because of its efficacy combined with low cost. However, a variable incidence of hemorrhagic complications (5-30%) has been documented in patients undergoing continuous renal replacement therapy (CRRT) with heparin as an anticoagulant. Citrate has anticoagulation properties secondary to its ability to chelate calcium, which is necessary for the coagulation cascade...
2017: Contributions to Nephrology
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