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https://www.readbyqxmd.com/read/28431327/dendrimer-conjugated-iron-oxide-nanoparticles-as-stimuli-responsive-drug-carriers-for-thermally-activated-chemotherapy-of-cancer
#1
Saumya Nigam, Dhirendra Bahadur
In recent years, functional nanomaterials have found an appreciable place in the understanding and treatment of cancer. This work demonstrates the fabrication and characterization of a new class of cationic, biocompatible, peptide dendrimers, which were then used for stabilizing and functionalizing magnetite nanoparticles for combinatorial therapy of cancer. The synthesized peptide dendrimers have an edge over the widely used PAMAM dendrimers due to better biocompatibility and negligible cytotoxicity of their degradation products...
April 13, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28429453/tolcapone-induces-oxidative-stress-leading-to-apoptosis-and-inhibition-of-tumor-growth-in-neuroblastoma
#2
Tyler Maser, Maria Rich, David Hayes, Ping Zhao, Abhinav B Nagulapally, Jeffrey Bond, Giselle Saulnier Sholler
Catechol-O-methyltransferase (COMT) is an enzyme that inactivates dopamine and other catecholamines by O-methylation. Tolcapone, a drug commonly used in the treatment of Parkinson's disease, is a potent inhibitor of COMT and previous studies indicate that Tolcapone increases the bioavailability of dopamine in cells. In this study, we demonstrate that Tolcapone kills neuroblastoma (NB) cells in preclinical models by inhibition of COMT. Treating four established NB cells lines (SMS-KCNR, SH-SY5Y, BE(2)-C, CHLA-90) and two primary NB cell lines with Tolcapone for 48 h decreased cell viability in a dose-dependent manner, with IncuCyte imaging and Western blotting indicating that cell death was due to caspase-3-mediated apoptosis...
April 21, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28429306/mitochondrial-function-in-allergic-disease
#3
REVIEW
Divyaanka Iyer, Navya Mishra, Anurag Agrawal
PURPOSE OF THE REVIEW: The connections between allergy, asthma and metabolic syndrome are becoming increasingly clear. Recent research suggests a unifying mitochondrial link between the diverse phenotypes of these interlinked morbidities. The scope of this review is to highlight cellular mechanisms, epidemiology and environmental allergens influencing mitochondrial function and its importance in allergy and asthma. We briefly also consider the potential of mitochondria-targeted therapies in prevention and cure...
May 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28429194/photobiomodulation-therapy-associated-with-treadmill-training-in-the-oxidative-stress-in-a-collagen-induced-arthritis-model
#4
Solange Almeida Dos Santos, Marcia Ataize Dos Santos Vieira, Maira Cécilia Brandão Simões, Andrey Jorge Serra, Ernesto Cesar Leal-Junior, Paulo de Tarso Camillo de Carvalho
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by chronic and systemic inflammation, which leads to the destruction of the cartilage and bone and affects tissues in multiple joints. Oxidative stress has been implicated with regards to involvement in various disease conditions, such as diabetes mellitus and neurodegenerative, respiratory, cardiovascular, and RA diseases. In vivo experimental studies using photobiomodulation therapy (PBMT) have shown positive effects in reducing lipid peroxidation and in increasing antioxidant activity...
April 21, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28427967/mechanisms-underlying-hiv-associated-non-infectious-lung-disease
#5
REVIEW
Rachel M Presti, Sonia C Flores, Brent E Palmer, Jeffrey J Atkinson, Catherine R Lesko, Bryan Lau, Andrew P Fontenot, Jesse Roman, John F McDyer, Homer L Twigg
Pulmonary disease remains a primary source of morbidity and mortality in persons living with HIV (PLWH), although the advent of potent combination antiretroviral therapy (cART) has resulted in a shift from predominantly infectious to noninfectious pulmonary complications. PLWH are at high risk for chronic obstructive pulmonary disease, pulmonary hypertension, and lung cancer even in the era of cART. The underlying mechanisms of this are incompletely understood, but recent research in both human and animal models suggest that oxidative stress, expression of matrix metalloproteinases, and genetic instability may result in lung damage which predisposes PLWH to these conditions...
April 17, 2017: Chest
https://www.readbyqxmd.com/read/28427863/ros-in-cancer-the-burning-question
#6
REVIEW
Iok In Christine Chio, David A Tuveson
An unanswered question in human health is whether antioxidation prevents or promotes cancer. Antioxidation has historically been viewed as chemopreventive, but emerging evidence suggests that antioxidants may be supportive of neoplasia. We posit this contention to be rooted in the fact that ROS do not operate as one single biochemical entity, but as diverse secondary messengers in cancer cells. This cautions against therapeutic strategies to increase ROS at a global level. To leverage redox alterations towards the development of effective therapies necessitates the application of biophysical and biochemical approaches to define redox dynamics and to functionally elucidate specific oxidative modifications in cancer versus normal cells...
April 17, 2017: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/28427563/neuroinflammation-in-alzheimer-s-disease-the-preventive-and-therapeutic-potential-of-polyphenolic-nutraceuticals
#7
Yousef Sawikr, Nagendra Sastry Yarla, Ilaria Peluso, Mohammad Amjad Kamal, Gjumrakch Aliev, Anupam Bishayee
Brain inflammation, characterized by increased microglia and astrocyte activation, increases during aging and is a key feature of neurodegenerative diseases, such as Alzheimer's disease (AD). In AD, neuronal death and synaptic impairment, induced by amyloid-β (Aβ) peptide, are at least in part mediated by microglia and astrocyte activation. Glial activation results in the sustained production of proinflammatory cytokines and reactive oxygen species, giving rise to a chronic inflammatory process. Astrocytes are the most abundant glial cells in the central nervous system and are involved in the neuroinflammation...
2017: Advances in Protein Chemistry and Structural Biology
https://www.readbyqxmd.com/read/28427296/predictors-of-response-to-therapy-with-omalizumab-in-patients-with-severe-allergic-asthma-a-real-life-study
#8
Maria Kallieri, Andriana I Papaioannou, Evgenia Papathanasiou, Polyxeni Ntontsi, Spyridon Papiris, Stelios Loukides
INTRODUCTION: Omalizumab is a recombinant humanized IgG1 monoclonal anti-IgE antibody, used for the treatment of severe refractory allergic asthma. However, not all patients with IgE levels within the limits of administration, respond to treatment. The aim of the present study, was to determine clinical and inflammatory characteristics that could predict response to omalizumab. METHODS: We studied retrospectively patients treated with omalizumab as per GINA guidelines in one asthma tertiary referral center...
April 21, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28427291/antioxidant-therapy-for-management-of-oxidative-stress-induced-hypertension
#9
Khalil Ali Ahmad, Dai Yuan Yuan, Waqas Nawaz, Hong Ze, Chen Xue Zhuo, Bashar Talal, Abdoh Taleb, Enos Mais, Ding Qilong
Hypertension is considered as the most common risk factor for cardiovascular diseases, also is regarded as a leading cause of the mortality and morbidity worldwide. The mechanisms underlying the pathological process of hypertension are not completely explained. However, there is growing evidence that increased oxidative stress plays an important role in the pathophysiology of hypertension. Several preclinical studies and clinical trials have indicated that antioxidant therapy is important for management of hypertension, using antioxidants compounds such as alpha tocopherol (Vit E) and ascorbic acid (Vit C), polyphenols with others and some antihypertensive drugs that are now in clinical use (e...
April 20, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28426747/metabolic-analysis-of-radioresistant-medulloblastoma-stem-like-clones-and-potential-therapeutic-targets
#10
Lue Sun, Takashi Moritake, Kazuya Ito, Yoshitaka Matsumoto, Hironobu Yasui, Hidehiko Nakagawa, Aki Hirayama, Osamu Inanami, Koji Tsuboi
Medulloblastoma is a fatal brain tumor in children, primarily due to the presence of treatment-resistant medulloblastoma stem cells. The energy metabolic pathway is a potential target of cancer therapy because it is often different between cancer cells and normal cells. However, the metabolic properties of medulloblastoma stem cells, and whether specific metabolic pathways are essential for sustaining their stem cell-like phenotype and radioresistance, remain unclear. We have established radioresistant medulloblastoma stem-like clones (rMSLCs) by irradiation of the human medulloblastoma cell line ONS-76...
2017: PloS One
https://www.readbyqxmd.com/read/28426122/efficacy-of-androgen-deprivation-therapy-and-the-role-of-oxidative-stress
#11
D K Price
No abstract text is available yet for this article.
March 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28425467/hyperpolarized-13-c-spectroscopic-evaluation-of-oxidative-stress-in-a-rodent-model-of-steatohepatitis
#12
David M Wilson, Valentina Di Gialleonardo, Zhen J Wang, Valerie Carroll, Cornelius Von Morze, Andrew Taylor, Victor Sai, Mark VanCriekinge, Robert Bok, Michael A Ohliger, Kayvan R Keshari
Nonalcoholic fatty liver disease (NAFLD) has become highly prevalent, now considered the most common liver disease in the western world. Approximately one-third of patients with NASH develop non-alchoholic steatohepatitis (NASH), histologically defined by lobular and portal inflammation, and accompanied by marked oxidative stress. Patients with NASH are at increased risk for cirrhosis and hepatocellular carcinoma, and diagnosis currently requires invasive biopsy. In animal models of NASH, particularly the methionine-choline deficient (MCD) model, profound changes are seen in redox enzymes and key intracellular antioxidants...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28424623/notch-signaling-in-ischemic-damage-and-fibrosis-evidence-and-clues-from-the-heart
#13
REVIEW
Silvia Nistri, Chiara Sassoli, Daniele Bani
Notch signaling is a major intercellular coordination mechanism highly conserved throughout evolution. In vertebrates, Notch signaling is physiologically involved in embryo development, including mesenchymal cell commitment, formation of heart tissues and angiogenesis. In post-natal life, Notch signaling is maintained as a key mechanism of cell-cell communication and its dysregulations have been found in pathological conditions such as ischemic and fibrotic diseases. In the heart, Notch takes part in the protective response to ischemia, being involved in pre- and post-conditioning, reduction of reperfusion-induced oxidative stress and myocardial damage, and cardiomyogenesis...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28424593/phospholipase-a2-of-peroxiredoxin-6-plays-a-critical-role-in-cerebral-ischemia-reperfusion-inflammatory-injury
#14
Yu Shanshan, Jiang Beibei, Tan Li, Gao Minna, Lei Shipeng, Peng Li, Zhao Yong
Microglia-mediated inflammation is an important step in the progression of cerebral ischemia/reperfusion injury and the associated production of receptors of immunomoudulation, including Toll-like receptors (TLRs). Peroxiredoxin 6 (Prdx6) has been demonstrated as the endogenous antioxidant protein for its peroxidase properties. However, the role of the independent phospholipase A2 (iPLA2) activity of Prdx6 in stroke has not been well studied. In this study, we evaluated whether blocking the calcium-iPLA2 activity of Prdx6 using siRNA and inhibitors (1-hexadecyl-3-(trifluoroethgl)-sn-glycerol-2 phosphomethanol, MJ33) would have a critical effect on inflammatory brain damage...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28424427/nos2-expression-in-glioma-cell-lines-and-glioma-primary-cell-cultures-correlation-with-neurosphere-generation-and-sox-2-expression
#15
Paola Palumbo, Gianfranca Miconi, Benedetta Cinque, Francesca Lombardi, Cristina La Torre, Soheila Raysi Dehcordi, Renato Galzio, Annamaria Cimini, Antonio Giordano, Maria Grazia Cifone
Nitric oxide has been implicated in biology and progression of glioblastoma (GBM) being able to influence the cellular signal depending on the concentration and duration of cell exposure. NOS2 (inducible nitric oxide synthase) have been proposed as a component of molecular profile of several tumors, including glioma, one of the most aggressive primary brain tumor featuring local cancer stem cells responsible for enhanced resistance to therapies and for tumor recurrence. Here, we investigated the NOS2 mRNA expression by reverse transcription-PCR in human glioma primary cultures at several grade of malignancy and glioma stem cell (GSC) derived neurospheres...
March 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423690/preimplantation-factor-pif-protects-cultured-embryos-against-oxidative-stress-relevance-for-recurrent-pregnancy-loss-rpl-therapy
#16
Lindsay F Goodale, Soren Hayrabedran, Krassimira Todorova, Roumen Roussev, Sivakumar Ramu, Christopher Stamatkin, Carolyn B Coulam, Eytan R Barnea, Robert O Gilbert
Recurrent pregnancy loss (RPL) affects 2-3% of couples. Despite a detailed work-up, the etiology is frequently undefined, leading to non-targeted therapy. Viable embryos and placentae express PreImplantation Factor (PIF). Maternal circulating PIF regulates systemic immunity and reduces circulating natural killer cells cytotoxicity in RPL patients. PIF promotes singly cultured embryos' development while anti-PIF antibody abrogates it. RPL serum induced embryo toxicity is negated by PIF. We report that PIF rescues delayed embryo development caused by <3 kDa RPL serum fraction likely by reducing reactive oxygen species (ROS)...
March 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423529/pif-promotes-brain-re-myelination-locally-while-regulating-systemic-inflammation-clinically-relevant-multiple-sclerosis-m-smegmatis-model
#17
Giuseppe Migliara, Martin Mueller, Alessia Piermattei, Chaya Brodie, Michael J Paidas, Eytan R Barnea, Francesco Ria
Neurologic disease diagnosis and treatment is challenging. Multiple Sclerosis (MS) is a demyelinating autoimmune disease with few clinical forms and uncertain etiology. Current studies suggest that it is likely caused by infection(s) triggering a systemic immune response resulting in antigen/non-antigen-related autoimmune response in central nervous system (CNS). New therapeutic approaches are needed. Secreted by viable embryos, PreImplantation Factor (PIF) possesses a local and systemic immunity regulatory role...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423228/targeting-dna-pk-for-cancer-therapy
#18
Céline Cano, Suzannah J Harnor
The catalytic activity of DNA-dependent protein kinase (DNA-PK) is critical to its ability to repair lethal DNA-double strand breaks (DSBs). This includes repair of DSB lesions resulting from oxidative stress, oncogene-induced transcription, or following therapeutic treatment of cancer cells. Armed with this knowledge, many attempts have been made to identify small molecule inhibitors of DNA-PK activity as an approach to induce tumour chemo- and radio-sensitisation. This review examines the structures of known reversible and irreversible inhibitors, including those based upon chromen-4-one, arylmorpholine, and benzaldehyde scaffolds...
April 19, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28423196/melatonin-enhances-neural-stem-cell-differentiation-and-engraftment-by-increasing-mitochondrial-function
#19
Miguel Mendivil-Perez, Viviana Soto-Mercado, Ana Guerra-Librero, Beatriz I Fernandez-Gil, Javier Florido, Ying-Qiang Shen, Miguel A Tejada, Vivian Capilla-Gonzalez, Iryna Rusanova, José M Garcia-Verdugo, Darío Acuña-Castroviejo, Luis Carlos López, Carlos Velez-Pardo, Marlene Jimenez-Del-Rio, José M Ferrer, Germaine Escames
Neural stem cells (NSCs) are regarded as a promising therapeutic approach to protecting and restoring damaged neurons in neurodegenerative diseases (NDs) such as Parkinson's disease and Alzheimer's disease (PD and AD, respectively). However, new research suggests that NSC differentiation is required to make this strategy effective. Several studies have demonstrated that melatonin increases mature neuronal markers, which reflects NSC differentiation into neurons. Nevertheless, the possible involvement of mitochondria in the effects of melatonin during NSC differentiation has not yet been fully established...
April 19, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28422384/natural-antioxidant-flavonoids-in-formalin-induced-mice-paw-inflammation-inhibition-of-mitochondrial-sorbitol-dehydrogenase-activity
#20
Ebtehal Mohammad F, Wedad A Hasan, Eman G Mohamed
Flavonoids have reported to cover interesting multiple pharmacological properties. This study evaluated the effect of apigenin or silymarin in paw inflammation induced by formalin in mice. Mice were divided into four groups: I: positive control group; II: apigenin, 3 mg/kg (i.p.); III: silymarin 50 mg/kg (p.o.); IV: meloxicam 10 mg/kg (p.o.), the reference drug. Therapies were administered once a day for 7 days. The curative effects were assessed on inflammatory, oxidative stress and neurotransmitter biomarkers, and apoptosis...
April 19, 2017: Journal of Biochemical and Molecular Toxicology
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