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https://www.readbyqxmd.com/read/28454323/microrna-29a-b-c-targets-inos-and-is-involved-in-protective-remote-ischemic-preconditioning-in-an-ischemia-reperfusion-rat-model-of-non-alcoholic-fatty-liver-disease
#1
Yun-Fei Duan, Dong-Lin Sun, Jing Chen, Feng Zhu, Yong An
Remote ischemic preconditioning (RIPC) protects against the injury that is incurred by ischemia and reperfusion (IR); however, the role of RIPC in liver IR injury in non-alcoholic fatty liver disease (NAFLD) remains unclear. In this study, a NAFLD rat model was utilized in a series of different surgical procedures and molecular experiments. Rats of the IR group and the RIPC+IR group exhibited more severe injury than NAFLD control rats (in which the liver was prodded following a median-incision laparotomy). The liver condition, measured by serum alanine transaminase and aspartate transaminase levels, of the RIPC+IR group was better than that of the IR group...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454041/long-term-intake-of-a-high-protein-diet-increases-liver-triacylglycerol-deposition-pathways-and-hepatic-signs-of-injury-in-rats
#2
Rubén Díaz-Rúa, Jaap Keijer, Andreu Palou, Evert M van Schothorst, Paula Oliver
Intake of high-protein (HP) diets has increased over the last years, mainly due to their popularity for body weight control. Liver is the main organ handling ingested macronutrients and it is associated with the beginning of different pathologies. We aimed to deepen our knowledge on molecular pathways affected by long-term intake of an HP diet. We performed a transcriptome analysis on liver of rats chronically fed with a casein-rich HP diet and analyzed molecular parameters related to liver injury. Chronic increase in the dietary protein/carbohydrate ratio up-regulated processes related with amino acid uptake/metabolism and lipid synthesis, promoting a molecular environment indicative of hepatic triacylglycerol (TG) deposition...
April 19, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28453877/asymmetric-changes-in-circulating-insulin-levels-after-an-increase-compared-with-a-reduction-in-insulin-pump-basal-rate-in-people-with-type-1-diabetes
#3
S A McAuley, G M Ward, J C Horsburgh, J L Gooley, A J Jenkins, R J MacIsaac, D N O'Neal
AIMS: To investigate circulating insulin profiles after a clinically relevant insulin pump basal rate increase vs a reduction, and the associated glucose responses. METHODS: A cohort of 12 adults with Type 1 diabetes undertook this two-stage university hospital study using Accu-Chek pumps (Roche Diagnostics, Mannheim, Germany) and insulin aspart. An insulin basal rate change of 0.2 unit/h (increase in first stage, reduction in second stage) was implemented at ~09:30 h, after a single overnight basal rate (without bolus insulin), while fasting participants rested...
April 28, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28453657/comparative-ileal-digestibility-of-amino-acids-in-00-rapeseed-meal-and-rapeseed-meal-fed-to-growing-male-broilers
#4
Zafar Ullah, Zaib Ur Rehman, Yulong Yin, H Hans, Stein, Zafar Hayat, Gulraiz Ahmed, Mahr Un Nisa, Muhammad Akhtar, Muhammad Sarwar
Rapeseed meal (RSM) is a commonly used protein source in poultry diet but its usage is limited due to antinutritional factors, the glucosinolates (GLS) and erucic acid. The 00-rapeseed meal (00-RSM) is the developed variety of rapeseed with reduced GLS and erucic acid content through genetic selection. The present study was conducted with the objective of comparing the standardized ileal digestibility (SID) of amino acids (AA) in 00-RSM and RSM when fed to growing broilers. Three samples of each ingredient were collected from different sources...
April 26, 2017: Poultry Science
https://www.readbyqxmd.com/read/28453266/a-metabolomics-approach-to-investigate-estrogen-receptor-dependent-and-independent-effects-of-o-p-ddt-in-the-uterus-and-brain-of-immature-mice
#5
DeZhen Wang, Wentao Zhu, Yao Wang, Jin Yan, Miaomiao Teng, Jiyan Miao, Zhiqiang Zhou
Previous studies have demonstrated the endocrine disruption of o,p'-DDT. In this study, we used a 1H NMR based metabolomics approach to investigate the estrogenic effects of o,p'-DDT (300 mg/kg) on the uterus and brain after three days of oral gavage administration, and ethynylestradiol (EE, 100 μg/kg) was used as a positive control. A supervised statistical analysis (PLS-DA) indicated that o,p'-DDT exerted both estrogenic receptor-(ER)-dependent and independent effects on the uterus, but mainly ER-independent effects on the brain at metabolome levels, which was verified by co-exposing with the anti-estrogenic ICI 182, 780...
April 28, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28449558/in-silicomodel-driven-assessment-of-the-effects-of-brain-derived-neurotrophic-factor-deficiency-on-glutamate-and-gamma-aminobutyric-acid-implications-for-understanding-schizophrenia-pathophysiology
#6
Rimjhim Agrawal, Sunil Vasu Kalmady, Ganesan Venkatasubramanian
Objective: Deficient brain-derived neurotrophic factor (BDNF) is one of the important mechanisms underlying the neuroplasticity abnormalities in schizophrenia. Aberration in BDNF signaling pathways directly or circuitously influences neurotransmitters like glutamate and gamma-aminobutyric acid (GABA). For the first time, this study attempts to construct and simulate the BDNF-neurotransmitter network in order to assess the effects of BDNF deficiency on glutamate and GABA. Methods: Using CellDesigner, we modeled BDNF interactions with calcium influx via N-methyl-D-aspartate receptor (NMDAR)- Calmodulin activation; synthesis of GABA via cell cycle regulators protein kinase B, glycogen synthase kinase and β-catenin; transportation of glutamate and GABA...
May 31, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28449478/protective-effect-of-propofol-preconditioning-on-ischemia-reperfusion-injury-in-human-hepatocyte
#7
Yuzhu Zhang, Zhenzhen Chen, Nianhai Feng, Junxia Tang, Xingbo Zhao, Chengxiao Liu, Hongyu Xu, Mengyuan Zhang
BACKGROUND: Blood reperfusion after ischemia is the main measure to restore cell function. This study was aimed to explore the effect of propofol on rat and cell models of liver ischemia-reperfusion (I/R) injury, and to investigate its possible mechanism. METHODS: Wistar rats were divided into four groups: control group, sham group, I/R group, and propofol group. Human hepatocyte HL7702 was divided into six groups: control group, I/R group and propofol (5, 10, 20 and 40 µmol/L) groups...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28448964/antioxidant-and-hepatoprotective-effect-of-swertiamarin-on-carbon-tetrachloride-induced-hepatotoxicity-via-the-nrf2-ho-1-pathway
#8
Tao Wu, Jingjing Li, Yong Li, Hongping Song
BACKGROUND/AIMS: Swertiamarin (STM), the main bioactive component in Swertia mussotii Franch (Gentianaceae), has been shown to exert hepatoprotective effects on experimental liver injury. However, the effects and exact mechanisms of STM on carbon tetrachloride (CCl4) causing hepatotoxicity are still unknown. This study investigated the potential protective effects and mechanisms of STM on CCl4-induced liver injury in rats. METHODS: Adult male Sprague-Dawley (SD) rats were exposed to CCl4 with or without STM co-administration for consecutive eight weeks...
April 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28448853/a-cluster-of-aspartic-residues-in-the-extracellular-loop-ii-of-par-4-is-important-for-thrombin-interaction-and-activation-of-platelets
#9
Daniel Sánchez Centellas, Sushanth Gudlur, Alejandro Vicente-Carrillo, Sofia Ramström, Tomas L Lindahl
Thrombin activates platelets via proteolytic cleavage of protease-activated receptors (PARs) 1 and 4. The two PARs have distinct but complementary roles. The mechanisms responsible for PAR1 activation by thrombin have been extensively studied. However, much less is known regarding thrombin activation of PAR4, especially the potential involvement of regions of PAR4 other than the N-terminal, which is bound to the catalytic site of thrombin. We have studied PAR4 in S. cerevisiae strain MMY12, an expression system in which the GPCR receptors are connected to a Lac Z reporter gene resulting in increased β-galactosidase activity...
April 13, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28448702/ketamine-for-depression-1-clinical-summary-of-issues-related-to-efficacy-adverse-effects-and-mechanism-of-action
#10
Chittaranjan Andrade
Ketamine is an anesthetic drug that is also used for off-label indications such as the mediation of analgesia and sedation in various settings. It is additionally recognized as an agent with antidepressant potential. For depression, it is most commonly administered as a slow intravenous infusion in subanesthetic doses (usually 0.5 mg/kg). As an antidepressant, is strikingly different from conventional antidepressant drugs in that it brings about rapid and marked attenuation of depressive symptoms even in patients with refractory depression...
April 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28448609/six-autoantibodies-associated-with-autoimmune-encephalitis-are-not-detectable-in-the-cerebrospinal-fluid-of-suicide-attempters
#11
Johan Fernström, Åsa Westrin, Cécile Grudet, Lil Träskman-Bendz, Lena Brundin, Daniel Lindqvist
Previous findings suggest a link between neuroinflammatory processes and suicidality. Despite several lines of evidence supporting this link, including increased pro-inflammatory markers in blood-, cerebrospinal fluid (CSF)- and in post-mortem brain samples from suicidal individuals, the underlying mechanisms remain poorly understood. In this pilot study, we explored the possibility that autoimmune encephalopathies might be found among suicide attempters. We analysed the presence of six different autoantibodies (N-methyl-D-aspartate receptor, the α-amino-3-hydroxy-5-methyl-4-isoxazol-propionic acid receptor, the γ-amino-butyric acid B-receptor, the leucine-rich, glioma-inactivated 1, the contactin-associated protein-like 2, and the dipeptidyl-peptidase-like protein-6), all previously associated with psychopathology, in CSF samples from 29 unmedicated suicide attempters...
2017: PloS One
https://www.readbyqxmd.com/read/28448576/management-of-chronic-hepatitis-c-at-a-primary-health-clinic-in-the-high-burden-context-of-karachi-pakistan
#12
Yuely A Capileno, Rafael Van den Bergh, Dmytro Donchunk, Sven Gudmund Hinderaker, Saeed Hamid, Rosa Auat, Gul Ghuttai Khalid, Razia Fatima, Aashifa Yaqoob, Catherine Van Overloop
BACKGROUND: The burden of hepatitis C (HCV) infection in Pakistan is among the highest in the world, with a reported national HCV prevalence of 6.7% in 2014. In specific populations, such as in urban communities in Karachi, the prevalence is suspected to be higher. Interferon-free treatment for chronic HCV infection (CHC) could allow scale up, simplification and decentralization of treatment to such communities. We present an interim analysis over the course of February-December 2015 of an interferon-free, decentralised CHC programme in the community clinic in Machar Colony, Karachi, Pakistan...
2017: PloS One
https://www.readbyqxmd.com/read/28448564/insights-into-the-biochemical-defence-and-methylation-of-the-solitary-bee-osmia-rufa-l-a-foundation-for-examining-eusociality-development
#13
Aneta Strachecka, Jacek Chobotow, Jerzy Paleolog, Aleksandra Łoś, Michał Schulz, Dariusz Teper, Halina Kucharczyk, Maciej Grzybek
We examined age-related biochemical and histological changes in the fat bodies and hemolymph of Osmia rufa males and females. We analysed solitary bees during diapause, in October and in April; as well as the flying insects following diapause, in May and June. The trophocyte sizes, as well as the numbers of lipid droplets were the greatest at the beginning of diapause. Subsequently, they decreased along with age. Triglyceride and glucose concentrations systematically decreased in fat body cells but increased in the hemolymph from October to June...
2017: PloS One
https://www.readbyqxmd.com/read/28448552/transcriptomic-analysis-of-the-hepatic-response-to-stress-in-the-red-cusk-eel-genypterus-chilensis-insights-into-lipid-metabolism-oxidative-stress-and-liver-steatosis
#14
Sebastian Naour, Brisa M Espinoza, Jorge E Aedo, Rodrigo Zuloaga, Jonathan Maldonado, Macarena Bastias-Molina, Herman Silva, Claudio Meneses, Cristian Gallardo-Escarate, Alfredo Molina, Juan Antonio Valdés
Teleosts exhibit a broad divergence in their adaptive response to stress, depending on the magnitude, duration, and frequency of stressors and the species receiving the stimulus. We have previously reported that the red cusk-eel (Genypterus chilensis), an important marine farmed fish, shows a physiological response to stress that results in increased skeletal muscle atrophy mediated by over-expression of components of the ubiquitin proteasome and autophagy-lysosomal systems. To better understand the systemic effects of stress on the red cusk-eel metabolism, the present study assessed the transcriptomic hepatic response to repetitive handling-stress...
2017: PloS One
https://www.readbyqxmd.com/read/28448545/vitamin-d3-induced-hypercalcemia-increases-carbon-tetrachloride-induced-hepatotoxicity-through-elevated-oxidative-stress-in-mice
#15
Hiroki Yoshioka, Haruki Usuda, Nobuhiko Miura, Nobuyuki Fukuishi, Tsunemasa Nonogaki, Satomi Onosaka
The aim of this study was to determine whether calcium potentiates acute carbon tetrachloride (CCl4) -induced toxicity. Elevated calcium levels were induced in mice by pre-treatment with cholecalciferol (vitamin D3; V.D3), a compound that has previously been shown to induce hypercalcemia in human and animal models. As seen previously, mice injected with CCl4 exhibited increased plasma levels of alanine aminotransferase, aspartate aminotransferase, and creatinine; transient body weight loss; and increased lipid peroxidation along with decreased total antioxidant power, glutathione, ATP, and NADPH...
2017: PloS One
https://www.readbyqxmd.com/read/28448019/a-tandem-liquid-chromatography-mass-spectrometry-based-approach-for-metabolite-analysis-of-staphylococcus-aureus
#16
David J Samuels, Zhe Wang, Kyu Y Rhee, Shaun R Brinsmade
In an effort to thwart bacterial pathogens, hosts often limit the availability of nutrients at the site of infection. This limitation can alter the abundances of key metabolites to which regulatory factors respond, adjusting cellular metabolism. In recent years, a number of proteins and RNA have emerged as important regulators of virulence gene expression. For example, the CodY protein responds to levels of branched-chain amino acids and GTP and is widely conserved in low G+C Gram-positive bacteria. As a global regulator in Staphylococcus aureus, CodY controls the expression of dozens of virulence and metabolic genes...
March 28, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447858/risk-prediction-of-hepatotoxicity-in-paracetamol-poisoning
#17
Anselm Wong, Andis Graudins
CONTEXT: Paracetamol (acetaminophen) poisoning is the most common cause of acute liver failure in the developed world. A paracetamol treatment nomogram has been used for over four decades to help determine whether patients will develop hepatotoxicity without acetylcysteine treatment, and thus indicates those needing treatment. Despite this, a small proportion of patients still develop hepatotoxicity. More accurate risk predictors would be useful to increase the early detection of patients with the potential to develop hepatotoxicity despite acetylcysteine treatment...
April 27, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28447737/17%C3%AE-estradiol-protects-against-doxorubicin-induced-cardiotoxicity-in-male-sprague-dawley-rats-by-regulating-nadph-oxidase-and-apoptosis-genes
#18
Xiao-Juan Zhang, Xiao-Qing Cao, Chun-Sheng Zhang, Zhuo Zhao
Doxorubicin (DOX) is one of the most effective chemotherapeutic agents for the treatment of a number of malignancies. However, its use is limited by serious cardiotoxic effects, for which there are currently no reliable pharmacologic therapies. Estrogen has exhibited protective effects against cardiac stressors in male and female animal models; however, its effects on DOX‑induced cardiotoxicity remain unknown. High mortality and morbidity rates have been observed in patients with cancer worldwide, and DOX is often administered to a greater number of men than women...
March 16, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28447718/role-of-histone-deacetylase-expression-levels-and-activity-in-the-inflammatory-responses-of-patients-with-chronic-hepatitis-b
#19
Haiyue Zhang, Xun Li, Qian Zhang, Fan Yang, Xiaogang Chu, Di Zhang, Luwen Wang, Zuojiong Gong
Histone acetylation has been demonstrated to serve a pivotal role in numerous inflammatory diseases. The present study examined histone acetylation in patients with chronic hepatitis B (CHB) and CHB with liver failure by detecting histone deacetylase (HDAC) activity. Mice with acute liver failure (ALF) were treated with the HDAC inhibitor entinostat (MS275) and alterations in HDAC activity and pro‑inflammatory cytokine expression levels were detected. The effect of HDAC1 silencing on LPS-treated RAW264.7 murine macrophages was examined using specific small interfering RNA sequences, and the acetylation level of the non‑histone nuclear factor‑κB (NF‑κB) p65 subunit was additionally examined...
March 7, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28447517/hepatoprotective-potential-of-phyllanthus-muellarianus-leaf-extract-studies-on-hepatic-oxidative-stress-and-inflammatory-biomarkers
#20
Taofeek O Ajiboye, Fatimah M Ahmad, Airat O Daisi, Aminat A Yahaya, Oluwayemisi B Ibitoye, Hamdalat F Muritala, Taofik O Sunmonu
CONTEXT: Leaves of Phyllanthus muellarianus (Kuntze) Exell. (Euphorbiacea) are widely used in the management of liver disorders in Nigeria. However, no there is no scientific validation to support this use. OBJECTIVE: Hepatoprotective effect of Phyllanthus muellarianus aqueous leaf extract was investigated in acetaminophen-induced liver injury mice. MATERIALS AND METHODS: Hepatoprotective effect of Phyllanthus muellarianus aqueous leaf extract was evaluated in acetaminophen-induced hepatic damage in Swiss albino mice using biomarkers of hepatocellular indices, oxidative stress, proinflammatory factors and lipid peroxidation...
December 2017: Pharmaceutical Biology
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