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https://www.readbyqxmd.com/read/28081247/changes-of-oxidative-stress-glutathione-and-its-dependent-antioxidant-enzyme-activities-in-patients-with-hepatocellular-carcinoma-before-and-after-tumor-resection
#1
Shao-Bin Cheng, Hsiao-Tien Liu, Sin-Yuan Chen, Ping-Ting Lin, Chia-Yu Lai, Yi-Chia Huang
The changes in and relationship between oxidative stress and the glutathione (GSH) antioxidant system in the plasma and tissues of patients with hepatocellular carcinoma (HCC) before and after tumor resection have not been clearly determined. We investigated the changes in oxidative stress, GSH status and its dependent antioxidant enzyme activities in HCC patients before and after tumor resection, and to determine the association of oxidative stress with GSH and its dependent antioxidant enzyme activities in plasma and tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28073090/hair-dyeing-hair-washing-and-hair-cortisol-concentrations-among-women-from-the-healthy-start-study
#2
Sheila K Kristensen, Sofus C Larsen, Nanna J Olsen, Jan Fahrenkrug, Berit L Heitmann
BACKGROUND: Hair cortisol concentration (HCC) has been suggested as a promising marker for chronic stress. However, studies investigating the influence of hair dyeing and hair washing frequency on HCC have shown inconsistent results. OBJECTIVE: To examine associations between HCC and hair dyeing status or weekly hair washing frequency among women. METHODS: This cross-sectional study was based on data from 266 mothers participating in the Healthy Start intervention study...
December 31, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28069382/antibiotic-tigecycline-enhances-cisplatin-activity-against-human-hepatocellular-carcinoma-through-inducing-mitochondrial-dysfunction-and-oxidative-damage
#3
Jun Tan, Meijun Song, Mi Zhou, Yaoren Hu
Targeting mitochondrial metabolism has been recently demonstrated to be a promising therapeutic strategy for the treatment of various cancer. In this work, we demonstrate that antibiotic tigecycline is selectively against hepatocellular carcinoma (HCC) through inducing mitochondrial dysfunction and oxidative damage. Tigecycline is more effective in inhibiting proliferation and inducing apoptosis of HCC than normal liver cells. Importantly, tigecycline significantly enhances the inhibitory effects of chemotherapeutic drug cisplatin in HCC in vitro and in vivo...
January 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28056498/bone-marrow-stem-cell-therapy-partially-ameliorates-pathological-consequences-in-livers-of-mice-expressing-mutant-human-%C3%AE-1-antitrypsin
#4
Prakash Baligar, Veena Kochat, Shailendra K Arindkar, Zaffar Equbal, Snehashish Mukherjee, Swati Patel, Perumal Nagarajan, Sujata Mohanty, Jeffrey H Teckman, Asok Mukhopadhyay
: Alpha1-antitrypsin deficiency (AATD) is a genetic disease, caused by mutation of the AAT gene. Accumulation of mutated AAT protein aggregates in hepatocytes leads to endoplasmic reticulum (ER) stress resulting in impairment of liver functions and in some cases hepatocellular carcinoma, whereas decline of AAT levels in sera is responsible for pulmonary emphysema. In critical cases of liver ailments, the only option for treatment is liver transplantation, whereas AAT replacement therapy is followed in case of emphysema...
January 5, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28055301/autophagy-orchestrates-adaptive-responses-to-targeted-therapy-in-endometrial-cancer
#5
Núria Eritja, Bo-Juen Chen, Ruth Rodríguez-Barrueco, Maria Santacana, Sònia Gatius, August Vidal, Maria Dolores Martí, Jordi Ponce, Laura Bergadà, Andree Yeramian, Mario Encinas, Joan Ribera, Jaume Reventós, Jeff Boyd, Alberto Villanueva, Xavier Matias-Guiu, Xavier Dolcet, David Llobet-Navàs
Targeted therapies in endometrial cancer (EC) using kinase inhibitors rarely result in complete tumor remission and are frequently challenged by the appearance of refractory cell clones, eventually resulting in disease relapse. Dissecting adaptive mechanisms is of vital importance to circumvent clinical drug resistance and improve the efficacy of targeted agents in EC. Sorafenib is an FDA-approved multitarget tyrosine and serine/threonine kinase inhibitor currently used to treat hepatocellular carcinoma, advanced renal carcinoma and radioactive iodine-resistant thyroid carcinoma...
January 5, 2017: Autophagy
https://www.readbyqxmd.com/read/28054958/coenzyme-q10-and-oxidative-stress-inflammation-status-in-hepatocellular-carcinoma-patients-after-surgery
#6
Hsiao-Tien Liu, Shao-Bin Cheng, Yi-Chia Huang, Yin-Tzu Huang, Ping-Ting Lin
(1) Background: Hepatocellular carcinoma (HCC) is the second leading cause of cancer deaths worldwide, and surgical resection is the main treatment for HCC. To date, no published study has examined the status of coenzyme Q10 in patients with HCC after surgery. Thus, the purpose of this study was to investigate the correlations between the level of coenzyme Q10, oxidative stress, and inflammation in patients with HCC after surgery; (2) Methods: 71 primary HCC patients were recruited. Levels of coenzyme Q10, vitamin E, oxidative stress (malondialdehyde), antioxidant enzymes activity (superoxidase dismutase, catalase, and glutathione peroxidase), and inflammatory markers (high sensitivity C-reactive protein; tumor necrosis factor-α; and interleukin-6) were measured; (3) Results: Patients with HCC had a significantly lower levels of coenzyme Q10 (p = 0...
January 4, 2017: Nutrients
https://www.readbyqxmd.com/read/28053598/regulation-of-the-hypoxic-tumor-environment-in-hepatocellular-carcinoma-using-rna-interference
#7
REVIEW
Sung Hoon Choi, Jun Yong Park
OBJECTIVES: Hypoxia is the condition where tumor cells have been deprived of oxygen and has been shown to have a role of tumor development in the hepatocellular carcinoma (HCC). METHODS: Using PubMed online database and Google scholar web site, the terms "angiogenesis", "apoptosis", "RNA interference" and/or "hepatocellular carcinoma (HCC)" were searched and analyzed. RESULTS: The hypoxia inducible factors (HIFs) are transcriptional regulators that affect a homeostatic response to oxidative stress and have been identified as a key transcription activator of angiogenesis, survival, and metabolism...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28053338/autophagy-in-the-liver-functions-in-health-and-disease
#8
REVIEW
Takashi Ueno, Masaaki Komatsu
The concept of macroautophagy was established in 1963, soon after the discovery of lysosomes in rat liver. Over the 50 years since, studies of liver autophagy have produced many important findings. The liver is rich in lysosomes and possesses high levels of metabolic-stress-induced autophagy, which is precisely regulated by concentrations of hormones and amino acids. Liver autophagy provides starved cells with amino acids, glucose and free fatty acids for use in energy production and synthesis of new macromolecules, and also controls the quality and quantity of organelles such as mitochondria...
January 5, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28053116/dna-dependent-protease-activity-of-human-spartan-facilitates-replication-of-dna-protein-crosslink-containing-dna
#9
Mónika Mórocz, Eszter Zsigmond, Róbert Tóth, Márton Zs Enyedi, Lajos Pintér, Lajos Haracska
Mutations in SPARTAN are associated with early onset hepatocellular carcinoma and progeroid features. A regulatory function of Spartan has been implicated in DNA damage tolerance pathways such as translesion synthesis, but the exact function of the protein remained unclear. Here, we reveal the role of human Spartan in facilitating replication of DNA-protein crosslink-containing DNA. We found that purified Spartan has a DNA-dependent protease activity degrading certain proteins bound to DNA. In concert, Spartan is required for direct DPC removal in vivo; we also show that the protease Spartan facilitates repair of formaldehyde-induced DNA-protein crosslinks in later phases of replication using the bromodeoxyuridin (BrdU) comet assay...
January 3, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28052026/p4hb-promotes-hcc-tumorigenesis-through-downregulation-of-grp78-and-subsequent-upregulation-of-epithelial-to-mesenchymal-transition
#10
Wei Xia, Juhua Zhuang, Guoyu Wang, Jing Ni, Jiening Wang, Ying Ye
P4HB and GRP78 are molecular chaperones involved in cellular response to ER stress. They have been linked to cancer progression; however, their roles in hepatocellular carcinoma (HCC) are largely unclear. In this study, we found that P4HB is overexpressed in human HCC tissues and cell lines. Higher tumoral P4HB levels are correlated with more advanced disease and poorer survival. GRP78 expression is inversely correlated with P4HB in human HCC tissues, and downregulated by P4HB in HCC cell lines. P4HB overexpression promotes HCC cell growth, migration, invasion and epithelial-to-mesenchymal transition (EMT) in vitro...
December 28, 2016: Oncotarget
https://www.readbyqxmd.com/read/28043031/liver-5-ht7-receptors-a-novel-regulator-target-of-fibrosis-and-inflammation-induced-chronic-liver-injury-in-vivo-and-in-vitro
#11
Beyzagul Polat, Zekai Halici, Elif Cadirci, Emre Karakus, Yasin Bayir, Abdulmecit Albayrak, Deniz Unal
BACKGROUND AND AIM: Hepatocellular cancer (HCC) is the sixth most common cancer and liver fibrosis is strongly associated with HCC. Treatment options are limited, and preventive strategies should be developed. An important step in the beginning of liver fibrosis is a strong inflammatory response. 5-HT7 is the last recognized member of the serotonin receptor family and is expressed in both central nerve system and peripheral system and have a lot of functions like learning, memory, smooth muscular relaxation, in the control of circadian rhythms and thermoregulation, pain and migraine, schizophrenia, anxiety, cognitive disturbances, and even inflammation...
February 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28035533/mitochondrial-cholesterol-and-the-paradox-in-cell-death
#12
Carmen García-Ruiz, Vicente Ribas, Anna Baulies, Jose C Fernández-Checa
Mitochondria are considered cholesterol-poor organelles, and obtain their cholesterol load by the action of specialized proteins involved in its delivery from extramitochondrial sources and trafficking within mitochondrial membranes. Although mitochondrial cholesterol fulfills vital physiological functions, such as the synthesis of bile acids in the liver or the formation of steroid hormones in specialized tissues, recent evidence indicates that the accumulation of cholesterol in mitochondria may be a key event in prevalent human diseases, in particular in the development of steatohepatitis (SH) and its progression to hepatocellular carcinoma (HCC)...
December 30, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/27989619/determinants-of-treatment-eligibility-in-veterans-with-hepatitis-c-viral-infection
#13
Janice Taylor, Sian Carr-Lopez, Amy Robinson, Robert Malmstrom, Karsten Duncan, Archana Maniar, A C Del Re, Jannet M Carmichael
PURPOSES: The objective of this study was to determine the percentage of veterans with active hepatitis C virus (HCV) infection who were deemed to be candidates for treatment and to identify factors associated with treatment ineligibility. METHODS: This was a multisite, retrospective cohort analysis of veterans with HCV infection within the Veteran Integrated Service Network 21. Patients evaluated between August and November 2015 who were viremic and not receiving HCV treatment were included in the analysis...
December 15, 2016: Clinical Therapeutics
https://www.readbyqxmd.com/read/27987371/synergistic-combination-for-chemoprevention-of-hepatocellular-carcinoma-an-in-silico-and-in-vitro-approach
#14
Savita Mishra, DeepshikhaPande Katare
Combination therapy is one of the best methods to manage the fatality rate in hepatocellular carcinoma (HCC). The current study aimed to formulate a synergistic combination of synthetic and herbal compounds for the treatment of HCC as well as to elucidate a possible signalling mechanism. MTT and enzymatic assay were performed to determine the synergistic effect of drug combination (sorafenib, vitamin K1 and trans-chalcone) on HepG2 cell lines after intoxication with H2 O2 . Protein-protein interaction and docking studies were performed using Pathwaylinker2...
December 17, 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27986466/mitochondrial-adaptation-in-nonalcoholic-fatty-liver-disease-novel-mechanisms-and-treatment-strategies
#15
REVIEW
Nishanth E Sunny, Fernando Bril, Kenneth Cusi
Nonalcoholic fatty liver disease (NAFLD) is prevalent in patients with obesity or type 2 diabetes. Nonalcoholic steatohepatitis (NASH), encompassing steatosis with inflammation, hepatocyte injury, and fibrosis, predisposes to cirrhosis, hepatocellular carcinoma, and even cardiovascular disease. In rodent models and humans with NAFLD/NASH, maladaptation of mitochondrial oxidative flux is a central feature of simple steatosis to NASH transition. Induction of hepatic tricarboxylic acid cycle closely mirrors the severity of oxidative stress and inflammation in NASH...
December 13, 2016: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/27982422/update-review-of-the-acute-porphyrias
#16
REVIEW
Penelope E Stein, Michael N Badminton, David C Rees
Acute porphyrias are rare inherited disorders due to deficiencies of haem synthesis enzymes. To date, all UK cases have been one of the three autosomal dominant forms, although penetrance is low and most gene carriers remain asymptomatic. Clinical presentation is typically with acute neurovisceral attacks characterised by severe abdominal pain, vomiting, tachycardia and hypertension. Severe attacks may be complicated by hyponatraemia, peripheral neuropathy sometimes causing paralysis, seizures and psychiatric features...
December 16, 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/27981602/prohibitin-1-suppresses-liver-cancers-tumorigenesis-in-mice-and-human-hepatocellular-and-cholangiocarcinoma-cells
#17
Wei Fan, Heping Yang, Ting Liu, Jiaohong Wang, Tony W H Li, Nirmala Mavila, Yuanyuan Tang, JinWon Yang, Hui Peng, Jian Tu, Alagappan Annamalai, Mazen Noureddin, Anuradha Krishnan, Gregory J Gores, M L Martínez-Chantar, José M Mato, Shelly C Lu
: Prohibitin 1 (PHB1) is best known as a mitochondrial chaperone and its role in cancer is conflicting. Mice lacking methionine adenosyltransferase α 1 (MATα1) have lower PHB1 expression and we reported c-MYC interacts directly with both proteins. Furthermore, c-MYC and MATα1 expert opposing effects on liver cancer growth, prompting us to examine the interplay between PHB1, MATα1 and c-MYC and PHB1's role in liver tumorigenesis. We found PHB1 is highly expressed in normal hepatocytes and bile duct epithelial cells and down-regulated in most human hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA)...
December 16, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27965980/in-vitro-protective-effects-of-lycium-barbarum-berries-cultivated-in-umbria-italy-on-human-hepatocellular-carcinoma-cells
#18
M R Ceccarini, S Vannini, S Cataldi, M Moretti, M Villarini, B Fioretti, E Albi, T Beccari, M Codini
Lycium barbarum is a famous plant in the traditional Chinese medicine. The plant is known to have health-promoting bioactive components. The properties of Lycium barbarum berries cultivated in Umbria (Italy) and their effect on human hepatocellular carcinoma cells (HepG2) have been investigated in this work. The obtained results demonstrated that the Lycium barbarum berries from Umbria region display high antioxidant properties evaluated by total phenolic content and ORAC method, on hydrophilic and lipophilic fractions...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27959410/endoplasmic-reticulum-stress-mediates-sulforaphane-induced-apoptosis-of-hepg2-human-hepatocellular-carcinoma-cells
#19
Xiang Zou, Zhongyuan Qu, Yueni Fang, Xin Shi, Yubin Ji
Sulforaphane (SFN) is a naturally occurring chemopreventive agent, which effectively inhibits proliferation of HepG2 human hepatocellular carcinoma cells via mitochondria‑mediated apoptosis. Endoplasmic reticulum stress is considered the most important cause of cell apoptosis; therefore, the present study aimed to determine whether the endoplasmic reticulum pathway was involved in SFN-induced apoptosis of HepG2 cells. An MTT assay was used to detect the inhibitory effects of SFN on HepG2 cells. Fluorescence microscopy was used to observe the morphological changes in apoptotic cells, and western blot analysis was conducted to detect the expression of binding immunoglobulin protein (Bip)/glucose-regulated protein 78 (GRP78), X‑box binding protein‑1 (XBP‑1) and BH3 interacting domain death agonist (Bid)...
January 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27957239/oxidative-stress-and-liver-cancer-etiology-and-therapeutic-targets
#20
REVIEW
Zhanpeng Wang, Zhuonan Li, Yanshuo Ye, Lijuan Xie, Wei Li
Accumulating evidence has indicated that oxidative stress (OS) is associated with the development of hepatocellular carcinoma (HCC). However, the mechanisms remain largely unknown. Normally, OS occurs when the body receives any danger signal-from either an internal or external source-and further induces DNA oxidative damage and abnormal protein expression, placing the body into a state of vulnerability to the development of various diseases such as cancer. There are many factors involved in liver carcinogenesis, including hepatitis B virus (HBV) and hepatitis C virus (HCV) infection, alcohol abuse, and nonalcoholic fatty liver disease (NAFLD)...
2016: Oxidative Medicine and Cellular Longevity
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