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https://www.readbyqxmd.com/read/28647567/stearoyl-coa-desaturase-regulates-sorafenib-resistance-via-modulation-of-er-stress-induced-differentiation
#1
Mark Kin Fai Ma, Eunice Yuen Ting Lau, Doris Hoi Wing Leung, Jessica Lo, Nicole Pui Yu Ho, Lily Kwan Wai Cheng, Stephanie Ma, Chi Ho Lin, John A Copland, Jin Ding, Regina Cheuk Lam Lo, Irene Oi Lin Ng, Terence Kin Wah Lee
We investigated the functional role and clinical significance of Stearoyl CoA desaturase-1 (SCD1) mediated endoplasmic reticulum (ER) stress in regulation of liver tumor-initiating cells (T-ICs) and sorafenib resistance, aiming to develop a novel therapeutic strategy against hepatocellular carcinomas (HCCs) METHODS We evaluated the clinic-pathological relevance of SCD1 and its correlation with sorafenib resistance in large cohorts of HCC clinical samples by qPCR and immunohistochemical analyses. Lentiviral-based overexpression and knockdown approaches were performed to characterize functional roles of SCD1 in regulation of liver T-ICs and sorafenib resistance...
June 21, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28639913/novel-roles-of-folic-acid-as-redox-regulator-modulation-of-reactive-oxygen-species-sinker-protein-expression-and-maintenance-of-mitochondrial-redox-homeostasis-on-hepatocellular-carcinoma
#2
Kun-Goung Lai, Chi-Fen Chen, Chun-Te Ho, Jun-Jen Liu, Tsan-Zon Liu, Chi-Liang Chern
We provide herein several lines of evidence to substantiate that folic acid (or folate) is a micronutrient capable of functioning as a novel redox regulator on hepatocellular carcinoma. First, we uncovered that folate deficiency could profoundly downregulate two prominent anti-apoptotic effectors including survivin and glucose-regulated protein-78. Silencing of either survivin or glucose-regulated protein-78 via small interfering RNA interfering technique established that both effectors could serve as reactive oxygen species sinker proteins...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28637104/-treatment-options-in-non-alcoholic-fatty-liver-disease
#3
REVIEW
Won Kim
The prevalence of non-alcoholic fatty liver disease (NAFLD) has sharply increased over the past several decades in Korea. In most cases of NAFLD, metabolic stress and cellular apoptosis are often driven by metabolic abnormality, eventually leading to inflammation and fibrosis . Along with a dramatic surge in the obesity epidemic, 10-20% of NAFLD patients ultimately progress to non-alcoholic steatohepatitis (NASH), a precursor to cirrhosis and hepatocellular carcinoma, as well as multi-organ systemic diseases...
June 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28636424/fluid-shear-stress-regulates-hepg2-cell-migration-though-time-dependent-integrin-signaling-cascade
#4
Hongchi Yu, Yang Shen, Jingsi Jin, Yingying Zhang, Tang Feng, Xiaoheng Liu
Hepatocellular carcinoma (HCC) is a subtype of malignant liver cancer with poor prognosis and limited treatment options. It is noteworthy that mechanical forces in tumor microenvironment play a pivotal role in mediating the behaviors and functions of tumor cells. As an instrumental type of mechanical forces in vivo, fluid shear stress (FSS) has been reported having potent physiologic and pathologic effects on cancer progression. However, the time-dependent mechanochemical transduction in HCC induced by FSS remains unclear...
June 21, 2017: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/28628229/troxerutin-with-copper-generates-oxidative-stress-in-cancer-cells-its-possible-chemotherapeutic-mechanism-against-hepatocellular-carcinoma
#5
A Subastri, A Suyavaran, Preedia Babu E, Nithyananthan S, R Bharathidasan, C Thirunavukkarasu
Troxerutin (TXER) a rutin derivative is known for its anticancer effect against hepatocellular carcinoma (HCC). As part of large study, recently we have shown TXER interact with genetic material and its anti-mutagenic property. In the present study we have explored its possible mode of action in HCC. Since TXER alone did not show significant anticancer effect on Huh-7 cells, in vitro biochemical assays were performed for determining anticancer efficacy of TXER + metal complex using transition metals such as Cu, Zn & Fe...
June 19, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28627652/eriodictyol-7%C3%A2-o%C3%A2-%C3%AE-%C3%A2-d-glucopyranoside-from-coreopsis%C3%A2-tinctoria-nutt-ameliorates-lipid-disorders-via-protecting-mitochondrial-function-and-suppressing-lipogenesis
#6
Yuyan Liang, Hai Niu, Limei Ma, Dan Du, Li Wen, Qing Xia, Wen Huang
Coreopsis tinctoria (snow chrysanthemum) has been reported to exert antihyperlipidemic effects. The present study aimed to identify the active compounds of Coreopsis tinctoria and to investigate the molecular mechanisms underlying its effects on lipid dysregulation by measuring lipid levels, reactive oxygen species, lipid peroxidation and fatty acid synthesis. The present results demonstrated that snow chrysanthemum aqueous extracts significantly reduced serum lipid levels and oxidative stress in vivo. The main compounds that were isolated were identified as flavanomarein (compound 1) and eriodictyol 7‑O‑β‑D glucopyranoside (compound 2)...
June 9, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28627645/therapeutic-strategies-for-alcoholic-liver-disease-focusing-on-inflammation-and-fibrosis-review
#7
Hideto Kawaratani, Kei Moriya, Tadashi Namisaki, Masakazu Uejima, Mitsuteru Kitade, Kousuke Takeda, Yasushi Okura, Kousuke Kaji, Hiroaki Takaya, Norihisa Nishimura, Shinya Sato, Yasuhiko Sawada, Kenichiro Seki, Takuya Kubo, Akira Mitoro, Junichi Yamao, Hitoshi Yoshiji
Excessive alcohol consumption is the most common cause of liver disease in the world. Chronic alcohol abuse leads to liver damage, liver inflammation, fibrosis and hepatocellular carcinoma. Inflammatory cytokines, such as tumor necrosis factor-α and interferon-γ, induce liver injury, which leads to the develo-pment of alcoholic liver disease (ALD). Hepatoprotective cytokines, such as interleukin (IL)-6 and IL-10, are also associated with ALD. IL-6 improves ALD via the activation of STAT3 and the subsequent induction of a variety of hepatoprotective genes in hepatocytes...
June 9, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28621226/pten-a-potential-prognostic-marker-in-virus-induced-hepatocellular-carcinoma
#8
REVIEW
Ayesha Khalid, Tabinda Hussain, Sobia Manzoor, Muhammad Saalim, Saba Khaliq
PTEN is the second most frequently mutated tumor suppresser gene in cancers after p53. Genetic and epigenetic alterations in the PTEN gene and its regulatory regions have been reported in various studies. PTEN is a crucial downregulator of the pro-survival phosphoinositide 3-kinase/Akt/mammalian target of rapamycin pathway and also suppresses insulin signaling. Failure to regulate these pathways leads to increase in cell proliferation and migration which in turn promotes tumorigenesis. PTEN underexpression is mediated by a variety of cytokines and stress kinases which seem to collectively induce the RAS/mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28617035/measuring-stress-in-young-children-using-hair-cortisol-the-state-of-the-science
#9
Randi Bates, Pamela Salsberry, Jodi Ford
Extensive literature suggests that adverse experiences in early childhood may deleteriously impact later health. These effects are thought to be related to the impact of persistent or chronic stress on various biological processes, mediated by dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis, and ultimately irregularities in cortisol levels. Ameliorating persistent stress in young children requires accurately measuring the chronicity of physiologic stress, which is difficult in young children because of unreliable self-report and the burden and inaccuracy associated with using invasive acute-stress biomeasures...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28612750/genetic-and-epigenetic-profile-of-patients-with-alcoholic-liver-disease
#10
Luigi Boccuto, Ludovico Abenavoli
Alcoholic liver disease (ALD) is a definition encompassing a spectrum of disorders ranging from simple steatosis to cirrhosis and hepatocellular carcinoma. Excessive alcohol consumption triggers a series of metabolic reactions that affect the liver by inducing lipogenesis, increasing oxidative stress, and causing abnormal inflammatory responses. The metabolic pathways regulating lipids, reactive oxygen species (ROS), and immune system are closely related and in some cases cross-regulate each other. Therefore, it must be taken into account that major genetic and epigenetic abnormalities affecting enzymes involved in one of such pathways can play a pivotal role in ALD pathogenesis...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28611265/hepatoprotective-effect-of-curcumin-on-hepatocellular-carcinoma-through-autophagic-and-apoptic-pathways
#11
Ahmed Elmansi, Amro El-Karef, Mamdouh Shishtawy, Laila Eissa
BACKGROUND AND RATIONALE: Microtubule-associated protein light chain 3-II (LC3-II), and Sequestosome-1 (SQSTM1) are proteins that can be used as markers for autophagic pathway. Bcl-2 protein is reported to be inversely correlated with apoptosis. We aimed to investigate the effects of curcumin on liver inflammation and fibrosis up to the first dysplastic stage of Hepatocellular carcinoma (HCC) induced by Thioacetamide (TAA) in rats and to clarify the effects of curcumin on LC3-II, SQSTM1, and Bcl-2...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28608141/triterpenoids-principle-of-wedelia-calendulacea-attenuated-diethynitrosamine-induced-hepatocellular-carcinoma-via-down-regulating-oxidative-stress-inflammation-and-pathology-via-nf-kb-pathway
#12
Amita Verma, Deepika Singh, Firoz Anwar, Prakash Chandra Bhatt, Fahad Al-Abbasi, Vikas Kumar
The aerial part of Wedelia calendulacea have been used in Ayurveda, Unani, Tibetan, Siddha and other folk medicine systems to protect the liver and renal tissue. Liver is considered as primary metabolizing site of body, which is prone to damage by endogenous and exogenous toxicants. A reason for liver toxicity, and major causes of the hepatocellular carcinoma (HCC). 19-α-Hydroxyurs-12(13)-ene-28 oic acid-3-O-β-D-glucopyranoside (HEG), a triterpenoids found in the higher plants, has been known to possess protective effect against various toxicants...
June 12, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28604704/thermoneutral-housing-exacerbates-nonalcoholic-fatty-liver-disease-in-mice-and-allows-for-sex-independent-disease-modeling
#13
Daniel A Giles, Maria E Moreno-Fernandez, Traci E Stankiewicz, Simon Graspeuntner, Monica Cappelletti, David Wu, Rajib Mukherjee, Calvin C Chan, Matthew J Lawson, Jared Klarquist, Annika Sünderhauf, Samir Softic, C Ronald Kahn, Kerstin Stemmer, Yoichiro Iwakura, Bruce J Aronow, Rebekah Karns, Kris A Steinbrecher, Christopher L Karp, Rachel Sheridan, Shiva K Shanmukhappa, Damien Reynaud, David B Haslam, Christian Sina, Jan Rupp, Simon P Hogan, Senad Divanovic
Nonalcoholic fatty liver disease (NAFLD), a common prelude to cirrhosis and hepatocellular carcinoma, is the most common chronic liver disease worldwide. Defining the molecular mechanisms underlying the pathogenesis of NAFLD has been hampered by a lack of animal models that closely recapitulate the severe end of the disease spectrum in humans, including bridging hepatic fibrosis. Here we demonstrate that a novel experimental model employing thermoneutral housing, as opposed to standard housing, resulted in lower stress-driven production of corticosterone, augmented mouse proinflammatory immune responses and markedly exacerbated high-fat diet (HFD)-induced NAFLD pathogenesis...
June 12, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28600122/oxidative-stress-plays-a-key-role-in-butyrate-mediated-autophagy-via-akt-mtor-pathway-in-hepatoma-cells
#14
Kishor Pant, Anoop Saraya, Senthil K Venugopal
Hepatocellular Carcinoma (HCC) is one of the most aggressive forms of cancer, responsible for a number of deaths in humans. Butyrate, one of the short chain fatty acids produced by the gut microbiota during anaerobic fermentation, was shown to be beneficial for inhibiting cancer growth. In this study, we showed that sodium butyrate induced autophagy via reactive oxygen species (ROS) in hepatoma cells. Butyrate (0-6 mM) incubation significantly increased intracellular ROS levels (45.2% compared to control), which in turn inhibited phosphorylation of akt and mTOR, leading to the upregulation of autophagic proteins, such as beclin 1, ATG 5, LC3-II, followed by the increased autophagosome formation (34...
June 11, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28598207/the-relationship-between-single-nucleotide-polymorphisms-the-expression-of-dna-damage-response-genes-and-hepatocellular-carcinoma-in-a-polish-population
#15
Renata Krupa, Piotr Czarny, Paulina Wigner, Joanna Wozny, Maciej Jablkowski, Radzislaw Kordek, Janusz Szemraj, Tomasz Sliwinski
The molecular mechanism of hepatocellular carcinoma (HCC) is related to DNA damage caused by oxidative stress products induced by hepatitis B virus (HBV) or C (HCV) infection and exposure to environmental pollutants. Single-nucleotide polymorphisms (SNPs) of DNA damage response (DDR) genes may influence individual susceptibility to environmental risk factors and affect DNA repair efficacy, which, in turn, can influence the risk of HCC. The study evaluates a panel of 15 SNPs in 11 DDR genes (XRCC1, XRCC3, XPD, MUTYH, LIG1, LIG3, hOGG1, PARP1, NFIL1, FEN1, and APEX1) in 65 HCC patients, 50 HBV- and 50 HCV-infected non-cancerous patients, and 50 healthy controls...
June 9, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28595512/effects-of-psychosocial-work-characteristics-on-hair-cortisol-findings-from-a-post-trial-study
#16
Raphael M Herr, Amira Barrech, Harald Gündel, Jessica Lang, Natalia Soares Quinete, Peter Angerer, Jian Li
Prolonged work stress, as indicated by the effort-reward imbalance (ERI) model, jeopardizes health. Cortisol represents a candidate mechanism connecting stress to ill health. However, previous findings appear inconclusive, and recommendations were made to assess work stress at multiple time points and also to investigate ERI (sub-)components. This study therefore examines the effects of two single time points, as well as the mean and change scores between time points of ERI and its components on hair cortisol concentration (HCC), a long-term cortisol measurement...
June 8, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28595502/the-importance-of-trait-emotional-intelligence-and-feelings-in-the-prediction-of-perceived-and-biological-stress-in-adolescents-hierarchical-regressions-and-fsqca-models
#17
Lidón Villanueva, Inmaculada Montoya-Castilla, Vicente Prado-Gascó
The purpose of this study is to analyse the combined effects of trait emotional intelligence (EI) and feelings on healthy adolescents' stress. Identifying the extent to which adolescent stress varies with trait emotional differences and the feelings of adolescents is of considerable interest in the development of intervention programmes for fostering youth well-being. To attain this goal, self-reported questionnaires (perceived stress, trait EI and positive/negative feelings) and biological measures of stress (hair cortisol concentrations, HCC) were collected from 170 adolescents (12-14 years old)...
June 8, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28595479/psychobiology-of-cumulative-trauma-hair-cortisol-as-a-risk-marker-for-stress-exposure-in-women
#18
Matthew C Morris, James L Abelson, Alyssa S Mielock, Uma Rao
Childhood trauma (CT) is associated with long-lasting alterations of the hypothalamic-pituitary-adrenal (HPA) axis and elevated risk for stress exposure in adulthood. Although HPA alterations are present in the early aftermath of trauma, it remains unclear how initial HPA activity is associated with subsequent stress exposure and whether CT exposure influences the strength and direction of this association. The present study examined prospective associations between hair cortisol content (HCC) and stress exposure from baseline to 3-month follow-up in young adult women with recent (i...
June 8, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28587303/the-role-of-lipid-and-lipoprotein-metabolism-in-non-alcoholic-fatty-liver-disease
#19
REVIEW
Francesco Massimo Perla, Maurizia Prelati, Michela Lavorato, Daniele Visicchio, Caterina Anania
Due to the epidemic of obesity across the world, nonalcoholic fatty liver disease (NAFLD) has become one of the most prevalent chronic liver disorders in children and adolescents. NAFLD comprises a spectrum of fat-associated liver conditions that can result in end-stage liver disease and the need for liver transplantation. Simple steatosis, or fatty liver, occurs early in NAFLD and may progress to nonalcoholic steatohepatitis, fibrosis and cirrhosis with increased risk of hepatocellular carcinoma. The mechanism of the liver injury in NAFLD is currently thought to be a "multiple-hit process" where the first "hit" is an increase in liver fat, followed by multiple additional factors that trigger the inflammatory activity...
June 6, 2017: Children
https://www.readbyqxmd.com/read/28586498/increased-hair-cortisol-concentrations-in-patients-with-progressive-keratoconus
#20
Janine Lenk, Eberhard Spoerl, Tobias Stalder, Susann Schmiedgen, Robert Herber, Lutz E Pillunat, Frederik Raiskup
PURPOSE: To investigate hair cortisol concentration (HCC), a biochemical correlate of chronic psychological stress, and its relationship to the progression of keratoconus. METHODS: Eighty-six participants were included in this prospective observational study (32 patients with progressive keratoconus, 32 patients with stable keratoconus, and 22 healthy controls). Hair cortisol concentrations were determined from 3-cm hair strands collected near the scalp from patients and controls as an index of cumulative cortisol secretion during the 3-month period prior to hair sampling...
June 1, 2017: Journal of Refractive Surgery
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