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https://www.readbyqxmd.com/read/28437864/linear-no-threshold-default-assumptions-are-unwarranted-for-cytotoxic-endpoints-independently-triggered-by-ultrasensitive-molecular-switches
#1
Kenneth T Bogen
Crump's response in this issue to my critique of linear-no-threshold (LNT) default assumptions for noncancer and nongenotoxic cancer risks (Risk Analysis 2016; 36(3):589-604) is rebutted herein. Crump maintains that distinguishing between a low-dose linear dose response and a threshold dose response on the basis of dose-response data is impossible even for endpoints involving increased cytotoxicity. My rebuttal relies on descriptions and specific illustrations of two well-characterized ultrasensitive molecular switches that govern two key cytoprotective responses to cellular stress-heat shock response and antioxidant response element activation, respectively-each of which serve to suppress stress-induced apoptotic cell death unless overwhelmed...
April 24, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28437753/p-gp-modulatory-acetyl-11-keto-%C3%AE-boswellic-acid-based-nanoemulsified-carrier-system-for-augmented-oral-chemotherapy-of-docetaxel
#2
Gitu Pandey, Naresh Mittapelly, Guru Raghavendra Valicherla, Ravi Prakash Shukla, Shweta Sharma, Venkatesh Teja Banala, Sandeep Urandur, Arun Kumar Jajoriya, Kalyan Mitra, D P Mishra, J R Gayen, P R Mishra
In spite of being a very potent and promising drug against many types of cancer, docetaxel suffers the disadvantage of low solubility and poor bioavailability rendering it unsuitable for oral administration. Also, the available marketed formulation for intravenous administration has its inherent drawbacks owing to the presence of polysorbate 80. Here, we exploited the anticancer and P-gp inhibitory potential of naturally occurring frankincense oil to fabricate a stable docetaxel loaded nanoemulsified carrier system for oral delivery...
April 15, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28437526/prominin-1-is-a-novel-regulator-of-autophagy-in-the-human-retinal-pigment-epithelium
#3
Sujoy Bhattacharya, Jinggang Yin, Christina S Winborn, Qiuhua Zhang, Junming Yue, Edward Chaum
Purpose: Prominin-1 (Prom1) is a transmembrane glycoprotein, which is expressed in stem cell lineages, and has recently been implicated in cancer stem cell survival. Mutations in the Prom1 gene have been shown to disrupt photoreceptor disk morphogenesis and cause an autosomal dominant form of Stargardt-like macular dystrophy (STGD4). Despite the apparent structural role of Prom1 in photoreceptors, its role in other cells of the retina is unknown. The purpose of this study is to investigate the role of Prom1 in the highly metabolically active cells of the retinal pigment epithelium (RPE)...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28437190/consuming-a-ketogenic-diet-while-receiving-radiation-and-chemotherapy-for-locally-advanced-lung-cancer-and-pancreatic-cancer-the-university-of-iowa-experience-of-two-phase-1-clinical-trials
#4
Amir Zahra, Melissa A Fath, Emyleigh Opat, Kranti A Mapuskar, Sudershan K Bhatia, Daniel C Ma, Samuel N Rodman Iii, Travis P Snyders, Catherine A Chenard, Julie M Eichenberger-Gilmore, Kellie L Bodeker, Logan Ahmann, Brian J Smith, Sandy A Vollstedt, Heather A Brown, Taher Abu Hejleh, Gerald H Clamon, Daniel J Berg, Luke I Szweda, Douglas R Spitz, John M Buatti, Bryan G Allen
Ketogenic diets are low in carbohydrates and high in fat, which forces cells to rely more heavily upon mitochondrial oxidation of fatty acids for energy. Relative to normal cells, cancer cells are believed to exist under a condition of chronic mitochondrial oxidative stress that is compensated for by increases in glucose metabolism to generate reducing equivalents. In this study we tested the hypothesis that a ketogenic diet concurrent with radiation and chemotherapy would be clinically tolerable in locally advanced non-small cell lung cancer (NSCLC) and pancreatic cancer and could potentially exploit cancer cell oxidative metabolism to improve therapeutic outcomes...
April 24, 2017: Radiation Research
https://www.readbyqxmd.com/read/28437147/comparison-of-two-types-of-meditation-on-patients-psychosocial-responses-during-radiation-therapy-for-head-and-neck-cancer
#5
Gisela Boxleitner, Shelley Jolie, Dana Shaffer, Nicholas Pasacreta, Mei Bai, Ruth McCorkle
OBJECTIVES: Radiation treatment for head and neck cancer introduces adaptive demands and subjects patients to significant and unique psychosocial challenges. There is growing evidence that meditation is useful in lessening anxiety and depression in cancer patients. This study compared the effects of two types of meditation training on the psychological responses of patients with head and neck cancer during radiation therapy. DESIGN: Randomized clinical trial. SETTING: Smilow Cancer Hospital at Yale New Haven...
February 17, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28436999/clinical-practice-guidelines-on-the-evidence-based-use-of-integrative-therapies-during-and-after-breast-cancer-treatment
#6
REVIEW
Heather Greenlee, Melissa J DuPont-Reyes, Lynda G Balneaves, Linda E Carlson, Misha R Cohen, Gary Deng, Jillian A Johnson, Matthew Mumber, Dugald Seely, Suzanna M Zick, Lindsay M Boyce, Debu Tripathy
Answer questions and earn CME/CNE Patients with breast cancer commonly use complementary and integrative therapies as supportive care during cancer treatment and to manage treatment-related side effects. However, evidence supporting the use of such therapies in the oncology setting is limited. This report provides updated clinical practice guidelines from the Society for Integrative Oncology on the use of integrative therapies for specific clinical indications during and after breast cancer treatment, including anxiety/stress, depression/mood disorders, fatigue, quality of life/physical functioning, chemotherapy-induced nausea and vomiting, lymphedema, chemotherapy-induced peripheral neuropathy, pain, and sleep disturbance...
April 24, 2017: CA: a Cancer Journal for Clinicians
https://www.readbyqxmd.com/read/28435744/diagnosis-of-spinal-epidural-abscess-a-case-report-and-literature-review
#7
Chidinma Chima-Melton, Michelle Pearl, Marni Scheiner
INTRODUCTION: Spinal epidural abscess (SEA) is a rare but serious cause of back pain in the critical care setting. It occurs most commonly in adults in their fifth and sixth decades of life. Risk factors include diabetes mellitus, alcoholism, AIDS or other immunocompromised states, cancer, intravenous drug use, trauma and spinal surgery. The clinical presentation can be non-specific but the classical triad includes back pain, fever and neurological deficits. Magnetic resonance imaging (MRI) with gadolinium is the diagnostic imaging modality of choice...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28435457/tumor-hypoxia-regulates-forkhead-box-c1-to-promote-lung-cancer-progression
#8
Yu-Jung Lin, Woei-Cherng Shyu, Chi-Wei Chang, Chi-Chung Wang, Chung-Pu Wu, Hsu-Tung Lee, Liang-Jwu Chen, Chia-Hung Hsieh
Forkhead box C1 (FOXC1) is a member of the forkhead family of transcription factors that are characterized by a DNA-binding forkhead domain. Increasing evidence indicates that FOXC1 is involved in tumor progression. However, the role of tumor hypoxia in FOXC1 regulation and its impact on lung cancer progression are unclear. Here, we report that FOXC1 was upregulated in hypoxic areas of lung cancer tissues from rodents or humans. Hypoxic stresses significantly induced FOXC1 expression. Moreover, hypoxia activated FOXC1 transcription via direct binding of hypoxia-inducible factor-1α (HIF-1α) to the hypoxia-responsive element (HRE) in the FOXC1 promoter...
2017: Theranostics
https://www.readbyqxmd.com/read/28435051/akt1-nf%C3%AE%C2%BAb-signaling-pathway-activation-by-a-small-molecule-dma-confers-radioprotection-to-intestinal-epithelium-in-xenograft-model
#9
Vinod Tiwari, Mohammad Zahid Kamran, Atul Ranjan, Hemlata Nimesh, Manish Singh, Vibha Tandon
Normal tissue protection and recovery of radiation-induced damage are of paramount importance for development of radioprotector. Radioprotector which selectively protects normal tissues over cancerous tissues improves the therapeutic window of radiation therapy. In the present study, small bisbenzimidazole molecule, DMA (5-(4-methylpiperazin-1-yl)-2-[2'-(3,4-dimethoxy-phenyl)-5'-benzimidazolyl]-benzimidazole) was evaluated for in vivo radioprotective effects to selectively protect normal tissue over tumor with underlying molecular mechanism...
April 20, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28435034/cytoreductive-prostatectomy-for-metastatic-prostate-cancer-first-lessons-learned-from-the-multicentric-prospective-lomp-trial
#10
Filip Poelaert, Caroline Verbaeys, Bernard Rappe, Bart Kimpe, Ignace Billiet, Hendrik Plancke, Karel Decaestecker, Valérie Fonteyne, Sarah Buelens, Nicolaas Lumen
OBJECTIVE: To prospectively evaluate patients with newly diagnosed metastatic prostate cancer (mPCa) in the context of the LoMP trial (which investigates the role of cytoreductive radical prostatectomy [cRP] in addition to standard of care [SoC]). To provide a preliminary analysis of patient's characteristics, safety of cRP and early local symptoms. PATIENTS AND METHODS: cRP was performed in asymptomatic patients with a resectable tumor and fit to undergo surgery (group A, n=17)...
April 20, 2017: Urology
https://www.readbyqxmd.com/read/28434943/epigenetic-pathways-in-human-disease-the-impact-of-dna-methylation-on-stress-related-pathogenesis-and-current-challenges-in-biomarker-development
#11
M Austin Argentieri, Sairaman Nagarajan, Bobak Seddighzadeh, Andrea A Baccarelli, Alexandra E Shields
HPA axis genes implicated in glucocorticoid regulation play an important role in regulating the physiological impact of social and environmental stress, and have become a focal point for investigating the role of glucocorticoid regulation in the etiology of disease. We conducted a systematic review to critically assess the full range of clinical associations that have been reported in relation to DNA methylation of CRH, CRH-R1/2, CRH-BP, AVP, POMC, ACTH, ACTH-R, NR3C1, FKBP5, and HSD11β1/2 genes in adults...
April 4, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28434617/stem-cell-lineage-infidelity-drives-wound-repair-and-cancer
#12
Yejing Ge, Nicholas C Gomez, Rene C Adam, Maria Nikolova, Hanseul Yang, Akanksha Verma, Catherine Pei-Ju Lu, Lisa Polak, Shaopeng Yuan, Olivier Elemento, Elaine Fuchs
Tissue stem cells contribute to tissue regeneration and wound repair through cellular programs that can be hijacked by cancer cells. Here, we investigate such a phenomenon in skin, where during homeostasis, stem cells of the epidermis and hair follicle fuel their respective tissues. We find that breakdown of stem cell lineage confinement-granting privileges associated with both fates-is not only hallmark but also functional in cancer development. We show that lineage plasticity is critical in wound repair, where it operates transiently to redirect fates...
April 19, 2017: Cell
https://www.readbyqxmd.com/read/28434459/becoming-parent-and-nurse-high-fidelity-simulation-in-teaching-ambulatory-central-line-infection-prevention-to-parents-of-children-with-cancer
#13
Carol E Heiser Rosenberg, Mary F Terhaar, Judith A Ascenzi, Anna Walbert, K Michelle Kokoszka, Julianne S Perretta, Marlene R Miller
BACKGROUND: Ambulatory central-line infections in children with cancer are life-threatening. Infections are two to three times more frequent in outpatients than inpatients, for whom evidence-based bundles have decreased morbidity. Most cancer care now takes place at home, where parents perform many of the same tasks as nurses. However, parents often feel stressed and unprepared. To address this, high-fidelity simulation, which has been effective for teaching novice nurses, was evaluated for parent central-line education...
May 2017: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28433786/mucoadhesive-tetrahydrocannabinol-loaded-nlc-formulation-optimization-and-long-term-physicochemical-stability
#14
Ghaith Hommoss, Sung Min Pyo, Rainer H Müller
Tetrahydrocannabinol (THC) is used to treat pain in cancer patients. On the market there are mainly oral formulations. Especially to treat the problematic breakthrough pain in cancer, an easy applicable formulation with fast onset is desired. This formulation was developed as an aqueous nasal spray using nanostructured lipid carriers (NLC). The NLC were prepared with cetyl palmitate, having good miscibility with the oily THC and yielding particles with 1 year physical long-term stability. To make the particles mucoadhesive, small particles with diameters of about 200 nm were produced and additionally their surface positively charged using a cationic stabilizer...
April 19, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28433747/chemical-composition-of-ocimum-sanctum-by-lc-esi-ms-ms-analysis-and-its-protective-effects-against-smoke-induced-lung-and-neuronal-tissue-damage-in-rats
#15
M P Venuprasad, Hemanth Kumar Kandikattu, Sakina Razack, Narayanappa Amruta, Farhath Khanum
Smoke induced oxidative stress is known to cause various cancers and associated health problems including lung cancer. Herbal extracts have been reported as antioxidant supplements which attenuate free radical induced oxidative damage of tissues, among which Ocimum sanctum has been reported as the elixir of life due to its innumerable health benefits. In the present study, we investigated the protective effect of O. sanctum against cracker smoke induced lung and brain tissue damage. The results of the study demonstrate that O...
April 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28433662/iron-and-thiol-redox-signaling-in-cancer-an-exquisite-balance-to-escape-ferroptosis
#16
REVIEW
Shinya Toyokuni, Fumiya Ito, Kyoko Yamashita, Yasumasa Okazaki, Shinya Akatsuka
Epidemiological data indicate a constant worldwide increase in cancer mortality, although the age of onset is increasing. Recent accumulation of genomic data on human cancer via next-generation sequencing confirmed that cancer is a disease of genome alteration. In many cancers, the Nrf2 transcription system is activated via mutations either in Nrf2 or Keap1 ubiquitin ligase, leading to persistent activation of the genes with antioxidative functions. Furthermore, deep sequencing of passenger mutations is clarifying responsible cancer causative agent(s) in each case, including aging, APOBEC activation, smoking and UV...
April 19, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28433460/stimulatory-effect-of-desipramine-on-lung-metastases-of-adenocarcinoma-madb-106-in-stress-highly-sensitive-and-stress-non-reactive-rats
#17
Beata Grygier, Marta Kubera, Danuta Wrona, Adam Roman, Agnieszka Basta-Kaim, Piotr Gruca, Mariusz Papp, Zofia Rogoz, Monika Leskiewicz, Boguslawa Budziszewska, Magdalena Regulska, Barbara Korzeniak, Katarzyna Curzytek, Katarzyna Glombik, Joanna Slusarczyk, Michael Maes, Wladyslaw Lason
The effect of antidepressant drugs on tumor progress is very poorly recognized. The aim of the present study was to examine the effect of individual reactivity to stress and 24-day desipramine (DES) administration on the metastatic colonization of adenocarcinoma MADB 106 cells in the lungs of Wistar rats. Wistar rats were subjected to stress procedure according to the chronic mild stress (CMS) model of depression for two weeks and stress highly-sensitive (SHS) and stress non-reactive (SNR) rats were selected...
April 19, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28432781/cognitive-functioning-and-emotion-processing-in-breast-cancer-survivors-and-controls-an-erp-pilot-study
#18
Janine Wirkner, Mathias Weymar, Andreas Löw, Carmen Hamm, Anne-Marie Struck, Clemens Kirschbaum, Alfons O Hamm
Diagnosis and treatment of breast cancer is a very emotionally aversive and stressful life event, which can lead to impaired cognitive functioning and mental health. Breast cancer survivors responding with repressive emotion regulation strategies often show less adaptive coping and adverse outcomes. We investigated cognitive functioning and neural correlates of emotion processing using ERPs. Self-report measures of depression, anxiety, and fatigue, as well as hair cortisol as an index of chronic stress, were assessed...
April 22, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28432618/the-identification-of-key-genes-and-pathways-in-hepatocellular-carcinoma-by-bioinformatics-analysis-of-high-throughput-data
#19
Chaoyang Zhang, Li Peng, Yaqin Zhang, Zhaoyang Liu, Wenling Li, Shilian Chen, Guancheng Li
Liver cancer is a serious threat to public health and has fairly complicated pathogenesis. Therefore, the identification of key genes and pathways is of much importance for clarifying molecular mechanism of hepatocellular carcinoma (HCC) initiation and progression. HCC-associated gene expression dataset was downloaded from Gene Expression Omnibus database. Statistical software R was used for significance analysis of differentially expressed genes (DEGs) between liver cancer samples and normal samples. Gene Ontology (GO) term enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, based on R software, were applied for the identification of pathways in which DEGs significantly enriched...
June 2017: Medical Oncology
https://www.readbyqxmd.com/read/28432022/a-crosstalk-between-muscarinic-and-crf2-receptors-regulates-cellular-adhesion-properties-of-human-colon-cancer-cells
#20
M Pelissier-Rota, N T Chartier, B Bonaz, M R Jacquier-Sarlin
Patients with inflammatory bowel disease often suffer from chronic and relapsing intestinal inflammation that favor the development of colitis associated cancer. An alteration of the epithelial intestinal barrier function observed in IBD is supposed to be a consequence of stress. It has been proposed that corticotrophin-releasing factor receptor (CRF2), one of the two receptors of CRF, the principal neuromediator of stress, acts on cholinergic nerves to induce stress-mediated epithelial barrier dysfunction...
April 18, 2017: Biochimica et Biophysica Acta
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