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Oxidative stress cancer

Aliyu Muhammad, Sanusi Bello Mada, Ibrahim Malami, Gilead E Forcados, Ochuko L Erukainure, Hadiza Sani, Ibrahim Babangida Abubakar
Breast cancer as a multifactorial disease has been classified among the major causes of morbidity and mortality in women across the world, with a higher prevalence among post-menopausal women. Osteoporosis, a condition characterized by altered bone mineralization is also commonly found among post-menopausal women. Consequently, post-menopausal women are at risk of morbidity and mortality associated with breast cancer and postmenopausal osteoporosis. This may not be unconnected to the fact that, there may be existent biochemical links between the two mayhems, which might rally round between the cellular and molecular connectivity based on the actions and inactions of RANKL, estrogen, free radicals-induced oxidative stress and metabolic implications of age related obesity among others...
August 13, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Yasuomi Urano, Chinatsu Mori, Ayano Fuji, Keito Konno, Takayuki Yamamoto, Shohei Yashirogi, Mayu Ando, Yoshiro Saito, Noriko Noguchi
PARK7/DJ-1 is a Parkinson disease- and cancer-associated protein that functions as a multifunctional protein involved in gene transcription regulation and anti-oxidative defense. Although PARK7 lacks the secretory signal sequence, it is secreted and plays important physiological and pathophysiological roles. Whereas secretory proteins that lack the endoplasmic reticulum-targeting signal sequence are secreted from cells by way of what is called the unconventional secretion mechanism, the specific processes responsible for causing PARK7 to be secreted across the plasma membrane have remained unclear...
August 16, 2018: Autophagy
Mosaad A Abdel-Wahhab, Aziza A El-Nekeety, Nabila S Hassan, Abdullah A Y Gibriel, Khaled G Abdel-Wahhab
Fumonisin B1 (FB1 ) and aflatoxin B1 (AFB1 ) are fungal metabolites that frequently co-occur in foodstuffs and are responsible for mycotoxicosis and several primary cancers. Cinnamon essential oil (CEO) has a spacious range of benefit effects but also has some limitations owing to its strong taste or its interaction with some drugs. This study aimed to use the cinnamon oil emulsion droplets (COED) for the protection against oxidative stress, cytotoxicity, and reproductive toxicity in male Sprague-Dawley rats sub-chronically exposed to FB1 and/or AFB1 ...
August 15, 2018: Environmental Science and Pollution Research International
Shinji Ohtake, Takashi Kawahara, Yukari Ishiguro, Teppei Takeshima, Shinnosuke Kuroda, Koji Izumi, Hiroshi Miyamoto, Hiroji Uemura
Oxidative stress is a primary cause of vascular endothelial damage. In the prostate, ischemia increases the levels of reactive oxygen species, growth factors and cytokines, and induces the development of angiogenesis, which results in cancer progression. The expression levels of an oxidative stress marker, 8-hydroxyguanosine (8-OHdG), were compared between prostate cancer and non-neoplastic prostate tissues. A prostate tissue microarray composed of 10 cases of prostatic adenocarcinoma and 70 cases of benign prostatic hyperplasia was immunohistochemically stained for 8-OHdG...
September 2018: Molecular and Clinical Oncology
Liany Luna-Dulcey, Rebeka Tomasin, Marina A Naves, James A da Silva, Marcia R Cominetti
Triple negative breast cancer (TNBC) is very aggressive and lacks specific therapeutic targets, having limited treatment options and poor prognosis. [6]-gingerol is the most abundant and studied compound in ginger, presenting diverse biological properties such as antitumor activity against several types of cancer, including breast cancer. In this study, we show that the semi-synthetic analogue SSi6, generated after chemical modification of the [6]-gingerol molecule, using acetone-2,4-dinitrophenylhydrazone (2,4-DNPH) reagent, enhanced selective cytotoxic effects on MDA-MB-231 cells...
July 20, 2018: Oncotarget
Zi Wang, Yan-Fei Li, Xin-Yue Han, Yin-Shi Sun, Lian-Xue Zhang, Wei Liu, Xiang-Xiang Liu, Wei Li, Ying-Ying Liu
BACKGROUND/AIMS: Cisplatin (CDDP) was the first platinum-containing anti-cancer drug. However, CDDP causes nephrotoxicity as a side effect, which limits its clinic application. The aim of this study was to investigate the renoprotective effect of ginsenoside Re (G-Re) in a murine model of CDDP-induced acute kidney injury. METHODS: Male ICR mice were divided into 4 groups. G-Re was administered to the mice by oral gavage once a day at a dose of 25 mg/kg for 10 days...
August 15, 2018: Cellular Physiology and Biochemistry
Salah A Sheweita, Ainour A Almasmari, Sabah G El-Banna
Tramadol is an analgesic used to treat moderate to severe pain caused by cancer, osteoarthritis, and other musculoskeletal diseases. Cytochrome P450 system metabolizes tramadol and induces oxidative stress in different organs. Therefore, the present study aims at investigating the changes in the activities and the protein expressions of CYPs isozymes (2E1, 3A4, 2B1/2), antioxidants status, free radicals levels after pretreatment of rats with Curcumin and/or Gallic as single- and/or repeated-doses before administration of tramadol...
2018: PloS One
Bruna Emanuelle Sanches Borges, Elza Baia de Brito, Hellen Thais Fuzii, Cláudia Simone Baltazar, Aline Barreto Sá, Camile Irene Mota da Silva, Gleyce de Fátima Silva Santos, Maria da Conceição Nascimento Pinheiro
Objective To investigate the relation between oxidative stress markers, human papillomavirus infection and cervical cancer precursor lesions. Methods The study comprised women aged 14 to 60 years living in communities located by Amazon rivers in the state of Pará (Itaituba, Limoeiro do Ajuru and Bragança, 126, 68 and 43 women respectively). Papanicolau smears and polymerase chain reaction tests for human papillomavirus DNA detection were performed. Blood samples were collected to test malondialdehyde, total and oxidized glutathione levels...
2018: Einstein
T Coxon, L Goldstein, B K Odhiambo
Increasing anthropogenic alteration has resulted in increased exposure to both point and nonpoint source pollution. These exposures are increasingly studied for their role in human diseases, including diseases with known genetic or lifestyle risk factors. This study analyzed associations between a variety of human diseases and trace metals, PCBs, and PAHs in soil, groundwater, sediment, and fish. Contaminant spatial data at the county level from Virginia were used in ArcGIS to identify these associations among socially vulnerable populations...
August 14, 2018: Environmental Geochemistry and Health
Steffi Jose, Prerna Bhalla, G K Suraishkumar
Gut microbiome plays an important role in determining the effectiveness of cancer therapy. The composition of the microbiome is crucial to maintain good digestive health in the host, and to prevent and treat colorectal cancers. Most cancer therapies employ oxidative stress, which disturbs the redox status of the cell, and consequently affect growth, reductive biosynthesis and cell death. Therefore, oxidative stress can undesirably affect the gut microbiome. Hence, it is important to understand the impact of oxidative stress on gut bacteria to devise effective treatment strategies...
August 14, 2018: Scientific Reports
Yao Xu, Ying Luo, Chen Liang, Weibing Xing, Tongcun Zhang
As a strong transactivator of promoters containing CarG boxes, myocardin‑related transcription factor A (MRTF‑A) is critical for the process of metastasis in tumor cells. Nuclear factor erythroid 2‑like 1 (Nrf1) is well known as an important regulator of oxidative stress, which exists in multiple splicing forms with many unknown functions. The present study demonstrated a novel regulation loop between Nrf1α (the longest splicing form of Nrf1) and MRTF‑A that regulated the migration and invasion of breast cancer MDA‑MB‑231 cells...
August 9, 2018: International Journal of Molecular Medicine
Meng-Yu Wu, Giuo-Teng Yiang, Pei-Wen Cheng, Pei-Yi Chu, Chia-Jung Li
Hepatocarcinogenesis comprises of multiple, complex steps that occur after liver injury and usually involve several pathways, including telomere dysfunction, cell cycle, WNT/β-catenin signaling, oxidative stress and mitochondria dysfunction, autophagy, apoptosis, and AKT/mTOR signaling. Following liver injury, gene mutations, accumulation of oxidative stress, and local inflammation lead to cell proliferation, differentiation, apoptosis, and necrosis. The persistence of this vicious cycle in turn leads to further gene mutation and dysregulation of pro- and anti-inflammatory cytokines, such as interleukin (IL)-1β, IL-6, IL-10, IL-12, IL-13, IL-18, and transforming growth factor (TGF)-β, resulting in immune escape by means of the NF-κB and inflammasome signaling pathways...
August 13, 2018: Journal of Clinical Medicine
Zhigang Chen, Qiaoling Yuan, Guangren Xu, Huiyu Chen, Hongyu Lei, Jianming Su
Weanling stress and toxicosis, which are harmful to the health of pigs' intestines, are associated with oxidative stress. Quercetin (Que) is a polyphenolic compound that shows good anti-cancer, anti-inflammation and anti-oxidation effects. This study aimed to elaborate whether or not Que promotes IPEC-J2 (intestinal porcine enterocyte cells) proliferation and protects IPEC-J2 from oxidative damage. Thus, we examined the effects of Que on proliferation and H₂O₂-induced apoptosis in IPEC-J2. The results showed that Que increased IPEC-J2 viabililty, propelled cells from G1 phase into S phase and down-regulated gene levels of P27 and P21, respectively...
August 12, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Jeriel T R Keeney, Xiaojia Ren, Govind Warrier, Teresa Noel, David K Powell, Jennifer M Brelsfoard, Rukhsana Sultana, Kathryn E Saatman, Daret K St Clair, D Allan Butterfield
Chemotherapy-induced cognitive impairment (CICI) is now widely recognized as a real and too common complication of cancer chemotherapy experienced by an ever-growing number of cancer survivors. Previously, we reported that doxorubicin (Dox), a prototypical reactive oxygen species (ROS)-producing anti-cancer drug, results in oxidation of plasma proteins, including apolipoprotein A-I (ApoA-I) leading to tumor necrosis factor-alpha (TNF-α)-mediated oxidative stress in plasma and brain. We also reported that co-administration of the antioxidant drug, 2-mercaptoethane sulfonate sodium (MESNA), prevents Dox-induced protein oxidation and subsequent TNF-α elevation in plasma...
July 13, 2018: Oncotarget
Biplab Giri, Sananda Dey, Tanaya Das, Mrinmoy Sarkar, Jhimli Banerjee, Sandeep Kumar Dash
Chronic exposure of glucose rich environment creates several physiological and pathophysiological changes. There are several pathways by which hyperglycemia exacerbate its toxic effect on cells, tissues and organ systems. Hyperglycemia can induce oxidative stress, upsurge polyol pathway, activate protein kinase C (PKC), enhance hexosamine biosynthetic pathway (HBP), promote the formation of advanced glycation end-products (AGEs) and finally alters gene expressions. Prolonged hyperglycemic condition leads to severe diabetic condition by damaging the pancreatic β-cell and inducing insulin resistance...
August 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Aisha Siddiqi, Bano Saidullah, Sarwat Sultana
The present study was designed to evaluate the protective effects of hesperidin, a flavonoid on DEN initiated and Fe-NTA promoted renal carcinogenesis in Wistar rats. Renal cancer was initiated by a single i.p. injection of DEN (200 mg/kg b.wt.) and promoted with Fe-NTA (9 mg Fe/kg b.wt. i.p.) twice a week for 16 weeks. Rats were simultaneously administered with hesperidin (100 and 200 mg/kg b.wt.) for 16 consecutive weeks. The chemopreventive effect of hesperidin was assessed in terms of antioxidant activities, renal function, PGE2 level, and the expressions of COX-2 and VEGF...
August 11, 2018: Environmental Toxicology
Hong Su, Zhou Li, Lissy Lazar, Yasmin Alhamoud, Xin Song, Juan Li, Yafei Wang, Samuel Selorm Fiati Kenston, Muhammad Zubair Lqbal, Aiguo Wu, Zhen Li, Qihang Hua, Min Ding, Jinshun Zhao
Recent studies show that Janus Fe3 O4 -TiO2 nanoparticles (NPs) have potential applications as a multifunctional agent of magnetic resonance imaging (MRI) and photodynamic therapy (PDT) for the diagnosis and therapy of cancer. However, little work has been done on their biological effects. To evaluate the toxicity and underlying molecular mechanisms of Janus Fe3 O4 -TiO2 nanoparticles, an in vitro study using a human liver cell line HL-7702 cells was conducted. For comparison, the Janus Fe3 O4 -TiO2 NPs parent material TiO2 NPs was also evaluated...
August 11, 2018: Environmental Toxicology
Valentina Nanni, Lorena Canuti, Angelo Gismondi, Antonella Canini
BACKGROUND: Ultraviolet light exposure generates, in human tissues, radical species, which represent the main cause of photo-aging, DNA damage and skin cancer onset. On the other hand, Mediterranean plants, being continuously subjected to high solar radiation levels, are naturally adapted to take on this type of abiotic stress, thanks to the production of antioxidant secondary metabolites. For these reasons, several plant extracts were documented to be excellent antineoplastic drugs. PURPOSE: We investigated the potential antitumor activity of the flower extract obtained by Spartium junceum L...
July 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Jariya Umka Welbat, Pornthip Chaisawang, Wanassanun Pannangrong, Peter Wigmore
5-fluorouracil or 5-FU (a chemotherapeutic medication) has been revealed to induce memory deficits in many cancer patients. Asiatic acid (AA) is a triterpenoid extract from Centella asiatica. This compound can ameliorate intracellular oxidative stress caused by chemotherapy drugs. Recent studies have shown that AA is capable of inhibiting neuronal generation and memory deficit produced by 5-FU chemotherapy. This study aimed to assess the molecular mechanisms of AA related to hippocampal neurogenesis and memory in rats receiving 5-FU...
August 9, 2018: Nutrients
Eleni Pavlidou, Maria Mantzorou, Aristeidis Fasoulas, Christina Tryfonos, Dimitris Petridis, Constantinos Giaginis
INTRODUCTION: Moderate wine consumption is a characteristic of the Mediterranean diet. Studies around the world have shown a beneficial effect of moderate alcohol intake, especially wine, on health. This review aims to critically summarise the most recent studies that investigate the beneficial effects of moderate wine intake on human health. METHODS: The PubMed database was comprehensively searched to identify trials published from 2013 to 2018 that investigated the association between moderate wine consumption and health...
August 8, 2018: Diseases (Basel)
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