Read by QxMD icon Read


Sawsan Mahmoud, Hao Li, Tamara R McBrayer, Leda Bassit, Sherif F Hammad, Steven J Coats, Franck Amblard, Raymond F Schinazi
A novel series of tetrafluoro and hexafluoro acyclic nucleosides and their phosphoramidates were successfully prepared from commercially available 2,2,3,3-tetrafluoro-1,4-butanediol and 2,2,3,3,4,4-hexafluoro-1,5-pentanediol in four to six steps. Their ability to block HIV, HCV, HSV-1, and HBV replication along with their cytotoxicity toward HepG2, human lymphocyte, CEM, and Vero cells was assessed.
October 19, 2016: Nucleosides, Nucleotides & Nucleic Acids
Susoma Jannat, Md Yousof Ali, Hyeung-Rak Kim, Hyun Ah Jung, Jae Sue Choi
The aim of this study was to investigate the protective effects of juice powders from sweet orange [Citrus sinensis (L.) Osbeck], unshiu mikan (Citrus unshiu Marcow), and mini tomato (Solanum lycopersicum L.), and their major flavonoids, hesperidin, narirutin, and rutin in tert-butyl hydroperoxide (t-BHP)-induced oxidative stress in HepG2 cells. The increased reactive oxygen species and decreased glutathione levels observed in t-BHP-treated HepG2 cells were ameliorated by pretreatment with juice powders, indicating that the hepatoprotective effects of juice powders and their major flavonoids are mediated by induction of cellular defense against oxidative stress...
September 2016: Preventive Nutrition and Food Science
C-Y Lin, T-W Chang, W-H Hsieh, M-C Hung, I-H Lin, S-C Lai, Y-J Tzeng
Tanshinone IIA (Tan IIA), a constituent of the traditional medicinal plant Salvia miltiorrhiza BUNGE, has been reported to possess anticancer activity through induction of apoptosis in many cancer cells. Surprisingly, the present study finds that Tan IIA simultaneously causes apoptosis and necroptosis in human hepatocellular carcinoma HepG2 cells. We further find that apoptosis can be converted to necroptosis by pan-caspase inhibitor Z-VAD-fmk, and the two death modes can be blocked by necroptotic inhibitor necrostatin-1...
2016: Cell Death Discovery
Roman N Rodionov, Elisa Oppici, Jens Martens-Lobenhoffer, Natalia Jarzebska, Silke Brilloff, Dmitrii Burdin, Anton Demyanov, Anne Kolouschek, James Leiper, Renke Maas, Barbara Cellini, Norbert Weiss, Stefanie M Bode-Böger
Low plasma concentrations of L-homoarginine are associated with an increased risk of cardiovascular events, while homoarginine supplementation is protective in animal models of metabolic syndrome and stroke. Catabolism of homoarginine is still poorly understood. Based on the recent findings from a Genome Wide Association Study we hypothesized that homoarginine can be metabolized by alanine:glyoxylate aminotransferase 2 (AGXT2). We purified human AGXT2 from tissues of AGXT2 transgenic mice and demonstrated its ability to metabolize homoarginine to 6-guanidino-2-oxocaproic acid (GOCA)...
October 18, 2016: Scientific Reports
Wan Gao, Jia-Wen Hu, Fang Xu, Can-Jing Wei, Meng-Jiao Shi, Jun Zhao, Jia-Jia Wang, Bo Zhen, Teng-Fei Ji, Jian-Guo Xing, Zheng-Yi Gu, Fang Xu
Four new polyisoprenylated benzoylphloroglucinol derivatives, hyperscabrones J-M (1-4), were isolated from the air-dried aerial parts of Hypericum scabrum. Their structures were elucidated by spectroscopic methods and were subsequently confirmed by comparing with data of known compounds. The absolute configuration of the bicyclo[3.3.1]nonane-2,4,9-trione core was defined by the experimental and calculated electronic circular dichroism (ECD) spectra. The evaluation of their hepatoprotective activities against paracetamol-induced HepG2 cell damage showed that compounds 2 and 4 exhibited significant hepatoprotection at 10μM...
October 14, 2016: Fitoterapia
Jian Huang, Lei Zhao, Ping Yang, Zhen Chen, Ni Tang, Xiong Z Ruan, Yaxi Chen
Hepatitis B virus (HBV) is a hepatocyte-specific DNA virus whose gene expression and replication are closely associated with hepatic metabolic processes. Thus, a potential anti-viral strategy is to target the host metabolic factors necessary for HBV gene expression and replication. Recent studies revealed that fatty acid translocase CD36 is involved in the replication, assembly, storage, and secretion of certain viruses, such as hepatitis C virus (HCV) and human immunodeficiency virus (HIV). However, the relationship between CD36 and the HBV life cycle remains unclear...
2016: PloS One
Sedar Karakurt
Expression of a drug and xenobiotic metabolizing enzymes, cytochrome P450s (CYPs), and antioxidant enzymes can be modulated by various factors. The flavonoid rutin was investigated for its anti-carcinogen and protective effects as well as modulatory action on CYPs and phase II enzymes in human hepatocellular carcinoma cells. Rutin inhibited proliferation of HEPG2 cells in a dose-dependent manner with the IC50 value of 52.7 μmol L-1 and invasion of HEPG2 cells (21.6 %, p = 0.0018) and colony formation of those invaded cells (57...
December 1, 2016: Acta Pharmaceutica
Carol A Casey, Ganapati Bhat, Melissa S Holzapfel, Armen Petrosyan
BACKGROUND: It is known that ethanol (EtOH) and its metabolites have a negative effect on protein glycosylation. The fragmentation of the Golgi apparatus induced by alteration of the structure of largest Golgi matrix protein, giantin, is the major consequence of damaging effects of EtOH-metabolism on the Golgi; however, the link between this and abnormal glycosylation remains unknown. Because previously we have shown that Golgi morphology dictates glycosylation, we examined the effect EtOH administration has on function of Golgi residential enzymes involved in N-glycosylation...
October 17, 2016: Alcoholism, Clinical and Experimental Research
Liying Guo, Kai Tan, Hao Wang, Xuan Zhang
Hepatocellular carcinoma (HCC) is one of the most common malignancies and the second cause of cancer-related deaths around the world. Pterostilbene (PTE), is a natural analog of resveratrol, possessing diverse pharmacological activities. In the present study, we aimed to examine the effect of PTE on tumor growth in mouse models of HCC and to elucidate the possible molecular mechanism in vivo and in vitro. We showed that PTE dose-dependently suppressed tumor growth in mice induced by diethylnitrosamine plus carbon tetrachloride, as evidenced by a decrease in the number of tumors and in the maximum size of the tumors...
October 5, 2016: Oncology Reports
Min Ji Bak, Van-Long Truong, Se-Yeon Ko, Xuan Ngan Giang Nguyen, Mira Jun, Soon-Gi Hong, Jong-Won Lee, Woo-Sik Jeong
BACKGROUND: The induction of cellular defensive genes such as phase II detoxifying and antioxidant enzymes is a highly effective strategy for protection against carcinogenesis as well as slowing cancer development. Transcription factor Nrf2 (nuclear factor E2-related factor 2) is responsible for activation of phase II enzymes induced by natural chemopreventive compounds. METHODS: Red ginseng oil (RGO) was extracted using a supercritical CO2 extraction system and chemical profile of RGO was investigated by GC/MS...
October 2016: Journal of Ginseng Research
A Paini, M Mennecozzi, T Horvat, K Gerloff, T Palosaari, J V Sala Benito, A Worth
The Virtual Cell Based Assay (VCBA) was applied to simulate the long-term (repeat dose) toxic effects of chemicals, including substances in cosmetics and personal care products. The presented model is an extension of the original VCBA for simulation of single exposure and is implemented in a KNIME workflow. This work illustrates the steps taken to simulate the repeat dose effects of two reference compounds. i) Using caffeine, in vitro experimental viability data in single and repeated exposure from two human liver cell lines, HepG2 and HepaRG, were measured and used to optimize the VCBA...
October 13, 2016: Toxicology in Vitro: An International Journal Published in Association with BIBRA
Pooja Ghosh, Indu Shekhar Thakur
The study investigates the ability of fungus Phanerochaete sp. ISTL01 for biosorption of color from landfill leachate. Batch mode experiments were conducted to study the effects of pH, temperature, adsorbent dose, contact time and initial leachate concentration on biosorption. Maximum biosorption capacity was determined as 17.73 mg g(-1) of biomass. Equilibrium isotherms and kinetics were further studied. The biosorption data were found to fit well to the Freundlich isotherm and pseudo-second-order kinetic model...
October 17, 2016: Environmental Technology
S El-Meligie, Azza T Taher, Aliaa M Kamal, A Youssef
A series of chalcone analogous compounds were designed and synthesized. Replacing/substituting the enone or ethylenic bridge of the parent chalcone with rigid heterocyclic moieties or substituted aromatic amines gave nineteen target compounds. Their cytotoxic activities were screened against both breast and liver cancer cells as well as breast and liver normal cells. Target compounds were also evaluated for their inhibition activity of tubulin beta polymerization. Target compound 2e, 3a, 3b, 3c, 4a-4d, 5a, 5b and 6 showed broad spectrum excellent anticancer activity against both MCF-7 and HepG2...
October 1, 2016: European Journal of Medicinal Chemistry
Siddiq Pasha Shaik, V Lakshma Nayak, Faria Sultana, A V Subba Rao, Anver Basha Shaik, Korrapati Suresh Babu, Ahmed Kamal
A series of imidazo[2,1-b]thiazole linked triazole conjugates were synthesized by using Huisgen 1,3-dipolar cyclo-addition reaction (click chemistry approach) and evaluated for their antiproliferative activity against some human cancer cell lines like, HeLa (cervical), DU-145 (prostate), A549 (lung), MCF-7 (breast) and HepG2 (liver). Among them, Conjugates 4g and 4h demonstrated a significant antiproliferative effect against human lung cancer cells (A549) with IC50 values of 0.92 and 0.78 μM respectively...
September 20, 2016: European Journal of Medicinal Chemistry
Tao Zheng, Xincai Hao, Qibin Wang, Li Chen, Si Jin, Fang Bian
ETHNOPHARMACOLOGICAL RELEVANCE: The seed of Entada phaseoloides (L.) Merr. (Entada phaseoloides) has been long used as a folk medicine for the treatment of Diabetes mellitus by Chinese ethnic minorities. Recent reports have demonstrated that total saponins from Entada phaseoloides (TSEP) could reduce fasting blood glucose in type 2 diabetic rats. However, the mechanism has not been fully elucidated. The aim of this study was to explore the underlying mechanisms of TSEP on type 2 Diabetes mellitus (T2DM)...
October 11, 2016: Journal of Ethnopharmacology
Qin-Ge Ma, Ting Li, Rong-Rui Wei, Wen-Min Liu, Zhi-Pei Sang, Zhong-Wen Song
Medicago sativa L. is the most important cultivated herbage known as "the king of forage" and "feed queen" in the world. Eight new chalcones (1-8), and twelve known chalcones (9-20) were isolated from the aerial parts of M. sativa for the first time. Their structures were identified by extensive spectral data and references. The hypolipidemic and anti-angiogenic activities of compounds (1-20) were evaluated for the first time. Compounds 3, 4, 11, 12, and 20 (10 μM) exhibited significant hypolipidemic activities by measuring the triglyceride content in HepG2 cells with Simvastatin as positive control...
October 14, 2016: Journal of Agricultural and Food Chemistry
Hongmei Wang, Jianmin Liu, Xuemei Hu, Shanshan Liu, Baojun He
BACKGROUND Hepatocellular carcinoma (HCC) causes many deaths worldwide every year, especially in Asia. It is characterized by high malignancy, recurrence, and short survival time. Inflammation is closely related to the initiation and development of HCC. Tumor necrosis factor-α (TNF-α), an essential inflammatory mediator, has been studied as a potential therapy target in many cancers. However, its potential role in HCC diagnosis and therapy is still unclear. MATERIAL AND METHODS In our study, we detected the TNF-α expression in both human HCC tumor tissue and HCC cell lines HepG2 and HuH7...
October 14, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Marina Villanueva-Paz, Mario D Cordero, Ana Delgado Pavón, Beatriz Castejón Vega, David Cotán, Mario De la Mata, Manuel Oropesa-Ávila, Elizabet Alcocer-Gomez, Isabel de Lavera, Juan Garrido-Maraver, José Carrascosa, Ana Paula Zaderenko, Jordi Muntané, Manuel de Miguel, José Antonio Sánchez-Alcázar
Systemic treatments for hepatocellular carcinoma (HCC) have been largely unsuccessful. This study investigated the antitumoral activity of Amitriptyline, a tricyclic antidepressant, in hepatoma cells. Amitriptyline-induced toxicity involved early mitophagy activation that subsequently switched to apoptosis. Amitriptyline induced mitochondria dysfunction and oxidative stress in HepG2 cells. Amitriptyline specifically inhibited mitochondrial complex III activity that is associated with decreased mitochondrial membrane potential (∆Ψm) and increased reactive oxygen species (ROS) production...
July 2016: Genes & Cancer
Ziye Pan, Jinjiao He, Lubna M Rasoul, Yunye Liu, Ruixiang Che, Yun Ding, Xiaocheng Guo, Jiarui Yang, Dehua Zou, Hua Zhang, Deshan Li, Hongwei Cao
Recombinant Newcastle disease virus (rNDV) is tumor selective and intrinsically oncolytic, which has been developed as a vector to express exogenous genes to enhance its oncolytic efficacy. Our previous studies found that insertion sites of foreign gene in rNDV vector affected its expression and anti-tumor activities. However, the optimal insertion site for foreign genes remains unknown. In this study, we inserted the enhanced green fluorescence protein (EGFP) and IL2 genes into four different intergenic regions of the rNDV using reverse genetics technology...
2016: PloS One
Dongyan Shao, Yilin Wang, Qingsheng Huang, Junling Shi, Hui Yang, Zhongli Pan, Mingliang Jin, Haobin Zhao, Xiaoguang Xu
Resveratrol (Res) was previously reported to be capable of lowering plasma TC and LDL-C. The mechanism behind Res is not clearly understood, although it is presumed to have an effect on bile acid metabolism in the liver: a significant way in eliminating cholesterol from the body. As one of the major metabolites of Res in the liver, resveratrol glucuronides (Gres) is suspected to also contribute to the overall cholestrol-lowering activity of Res, which needs to be studied. In this research, when HepG2 steatosis hepatic cells were treated with Res and Gres at different concentration levels, Res and Gres showed similar activity in lowering cellular TC content...
October 13, 2016: Journal of Food Science
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"