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https://www.readbyqxmd.com/read/28103579/the-combination-of-early-treatment-response-and-ypt-stage-is-a-novel-metric-to-stage-rectal-cancer-patients-treated-with-neoadjuvant-chemoradiotherapy
#1
Jian Cui, Lin Yang, Lei Guo, Yongfu Shao, Dongfeng Tan, Ni Li, Haizeng Zhang
Rectal cancer patients receiving neoadjuvant chemoradiotherapy (NCRT) are currently classified using the same Tumor-Node-Metastasis staging system as those patients without NCRT. We determined whether the combination of tumor treatment response (TRG) and ypT stage more accurately assesses primary tumors in rectal cancer after NCRT. We analyzed data from 329 rectal cancer patients treated with NCRT followed by radical resection. Cox proportional hazards models were used to evaluate the effects of different staging parameters on disease-free survival (DFS)...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28103389/the-use-of-antioxidants-in-the-treatment-of-traumatic-brain-injury
#2
Whitney Venegoni, Qiuhua Shen, Amanda R Thimmesch, Meredith Bell, John B Hiebert, Janet D Pierce
AIMS: To discuss secondary traumatic brain injury, the mitochondria and the use of antioxidants as a treatment. BACKGROUND: One of the leading causes of death in young adults internationally is traumatic brain injury, affecting individuals in all demographics. Traumatic brain injury is produced by an external blunt force or penetration resulting in alterations in brain function or pathology. Often, with a traumatic brain injury, secondary injury causes additional damage to the brain tissue that can have further impact on recovery and the quality of life...
January 19, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28103028/main-group-metallomimetics-transition-metal-like-photolytic-co-substitution-at-boron
#3
Holger Braunschweig, Ivo Krummenacher, Marc-André Légaré, Alexander Matler, Krzysztof Radacki, Qing Ye
The carbon monoxide adduct of an unhindered and highly reactive CAAC-bound arylborylene, [(CAAC)B(CO)Ar] (CAAC = cyclic (alkyl)(amino)carbene), has been prepared using a transfer reaction from the linear iron borylene complex [(PMe3)(CO)3Fe=BAr]. [(CAAC)B(CO)Ar] is a source of the dicoordinate [(CAAC)ArB:] borylene which can be liberated by selective photolytic CO extrusion and that, while highly reactive, is sufficiently long-lived to react intermolecularly. Through trapping of the borylene generated in this manner, we present, among others, the first metal-free borylene(I) species containing a nitrogen-based donor, as well as a new boron-containing radical...
January 19, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28102684/catalytic-radical-trifluoromethylalkynylation-of-unactivated-alkenes
#4
Shaofang Zhou, Tao Song, He Chen, Zhonglin Liu, Haigen Shen, Chaozhong Li
The trifluoromethylalkynylation of unactivated alkenes with alkynyl sulfones and Togni's reagent was developed. The reaction was catalyzed by 2,4,6-trimethylpyridine, leading to various β-trifluoromethylated alkynes under metal-free conditions with a broad substrate scope and wide functional group compatibility. A mechanism involving catalytic nonchain radical processes is proposed.
January 19, 2017: Organic Letters
https://www.readbyqxmd.com/read/28102525/environmental-chemicals-and-aging
#5
REVIEW
Brandon L Pearson, Dan Ehninger
PURPOSE OF REVIEW: Innovations in agriculture and medicine as well as industrial and domestic technologies are essential for the growing and aging global population. These advances generally require the use of novel natural or synthetic chemical agents with the potential to affect human health. Here, we attempt to highlight environmental chemicals and select drugs with the potential to exacerbate aging by directly affecting molecular aging cascades focusing particular attention on the brain...
January 19, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28101901/cyto-genotoxicity-and-oxidative-stress-in-common-carp-cyprinus-carpio-exposed-to-a-mixture-of-ibuprofen-and-diclofenac
#6
Hariz Islas-Flores, Leobardo Manuel Gómez-Oliván, Marcela Galar-Martínez, Esmeralda Michelle Sánchez-Ocampo, Nely SanJuan-Reyes, Mariana Ortíz-Reynoso, Octavio Dublán-García
Thirty million people worldwide consume each day nonsteroidal anti-inflammatory drugs (NSAIDs), a heterogeneous group of pharmaceuticals used for its analgesic, antipyretic, and anti-inflammatory properties. Recent studies report high NSAID concentrations in wastewater treatment plant effluents, in surface, ground, and drinking water, and in sediments. NSAIDs are also known to induce toxicity on aquatic organisms. However, toxicity in natural ecosystems is not usually the result of exposure to a single substance but to a mixture of toxic agents, yet only a few studies have evaluated the toxicity of mixtures...
January 19, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28101470/protective-roles-of-n-acetyl-cysteine-and-or-taurine-against-sumatriptan-induced-hepatotoxicity
#7
Javad Khalili Fard, Hossein Hamzeiy, Mohammadreza Sattari, Mohammad Ali Eghbal
Purpose: Triptans are the drug category mostly prescribed for abortive treatment of migraine. Most recent cases of liver toxicity induced by triptans have been described, but the mechanisms of liver toxicity of these medications have not been clear. Methods: In the present study, we obtained LC50 using dose-response curve and investigated cell viability, free radical generation, lipid peroxide production, mitochondrial injury, lysosomal membrane damage and the cellular glutathione level as toxicity markers as well as the beneficial effects of taurine and/or N-acetyl cysteine in the sumatriptan-treated rat parenchymal hepatocytes using accelerated method of cytotoxicity mechanism screening...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28101349/clear-cell-carcinoma-of-the-lower-uterine-segment-a-case-report
#8
Yusuke Matoba, Iori Kisu, Keiko Saotome, Motoko Katayama, Makiko Taniguchi, Yumiko Miura, Taeko Goto, Nobumaru Hirao
Uterine carcinoma of the lower uterine segment (LUS) is a rare tumor that accounts for 3-3.5% of cases of uterine malignant cancer. The tumor arises from the lower region of the uterine body through the upper region of the cervix. The present study reported a case of clear cell carcinoma that originated from the LUS. A 50-year-old woman visited a local hospital due to irregular vaginal bleeding. She was suspected to have a uterine tumor and was referred to Tachikawa Hospital (Tokyo, Japan). Transvaginal ultrasound and magnetic resonance imaging revealed a uterine tumor from the lower region of the uterine body through the upper region of the cervix...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28101217/safety-and-effectiveness-of-percutaneous-radiofrequency-ablation-in-early-stage-renal-cell-carcinoma
#9
Hang Liu, Changzhong Gao, Hualong Yu
The purpose of this study was to analyze the safety and effectiveness of percutaneous radiofrequency ablation (RFA) in early stage renal cell carcinoma. A total of 76 patients suffering from early stage renal cell carcinoma were selected and randomly assigned into the observation group (41 cases) or the control group (35 cases). Percutaneous RFA was used in the observation group, while retroperitoneoscopic radical operation of renal cell carcinoma was used in the control group, and the operative effects were compared...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28100902/prognostic-role-of-neutrophil-to-lymphocyte-ratio-in-locally-advanced-rectal-cancer-treated-with-neoadjuvant-chemoradiotherapy
#10
Jinwen Shen, Yuan Zhu, Wei Wu, Lingnan Zhang, Haixing Ju, Yongtian Fan, Yuping Zhu, Jialin Luo, Peng Liu, Ning Zhou, Ke Lu, Na Zhang, Dechuan Li, Luying Liu
BACKGROUND Increasing evidence suggests that cancer-associated inflammation is associated with poorer outcomes. The neutrophil-to-lymphocyte ratio (NLR), considered as a systemic inflammation marker, is thought to predict prognoses in colorectal cancer. In this study, we explored the association between the NLR and prognoses following neoadjuvant chemoradiotherapy (CRT) for locally advanced rectal cancer (LARC). MATERIAL AND METHODS From February 2002 to December 2012, a group of 202 patients diagnosed with LARC and receiving neoadjuvant CRT followed by radical surgery was included in our retrospective study...
January 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28100855/trace-elements-as-an-activator-of-antioxidant-enzymes
#11
Marta Wołonciej, Elżbieta Milewska, Wiesława Roszkowska-Jakimiec
Oxidative stress is a state of impaired balance between the formation of free radicals and antioxidant capacity of the body. It causes many defects of the body, e.g. lipid peroxidation, DNA and protein damage. In order to prevent the effects of oxidative stress, the organism has developed defence mechanisms. These mechanisms capture and inhibit the formation of free radicals and also chelate ion metals that catalyse free radical reactions. Trace elements are components of antioxidant enzymes involved in antioxidant mechanisms...
December 31, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28100224/radical-scavenging-activities-of-lagerstroemia-speciosa-l-pers-petal-extracts-and-its-hepato-protection-in-ccl4-intoxicated-mice
#12
Bipransh Kumar Tiwary, Somit Dutta, Priyankar Dey, Mossaraf Hossain, Anoop Kumar, Sony Bihani, Ashis Kumar Nanda, Tapas Kumar Chaudhuri, Ranadhir Chakraborty
BACKGROUND: Lagerstroemia speciosa (L.) Pers. has medicinal importance. Bioactive phytochemicals isolated from different parts of L. speciosa, have revealed hypoglycemic, antibacterial, anti-inflammatory, antioxidant and hepato protective properties. Despite one report from Philippines detailing the use of L. speciosa as curative for fever and as well as diuretic, there is no experimental evidence about the hepatoprotective activity of the flower extracts. METHODS: Several spectroscopic methods, including GC-MS, were used to characterize phytochemicals present in the petal extract of L...
January 18, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28099957/results-of-surgical-salvage-treatment-for-anal-canal-cancer-a-retrospective-analysis-with-overview-of-the-literature
#13
Benedetta Pesi, Stefano Scaringi, Carmela Di Martino, Giacomo Batignani, Francesco Giudici, Damiano Bisogni, Francesco Tonelli, Paolo Bechi
BACKGROUND AND AIM: Chemoradiotherapy (CRT) is the gold standard treatment for anal cancer, which permits the maintenance of the anal function. However, about 30-40% of patients develop local disease progression, for which surgery represents a good salvage therapy. The aim of this study is to evaluate survival and morbidity rate in patients who undergo salvage surgery in our single institution, with an overview of the literature. METHODS: A retrospective study was carried out on patients who underwent surgical treatment of anal canal cancer after failure of CRT...
January 19, 2017: Digestive Surgery
https://www.readbyqxmd.com/read/28099892/a-novel-starch-based-stimuli-responsive-nanosystem-for-theranostic-applications
#14
Nahid Poorgholy, Bakhshali Massoumi, Mehdi Jaymand
The aim of this study is to synthesis and characterization of a novel stimuli-responsive polymeric nanosystem for theranostic applications. For this purpose, starch was modified by itaconic anhydride to afford an itaconat-functionalized starch macromonomer (starch-IA). This macromonomer with carboxylic functional groups was subsequently adsorbed onto the surface of iron oxide nanoparticles (Fe3O4 NPs), and then copolymerized with N-isopropylacrylamide (NIPAAm) monomer via a 'free' radical initiated polymerization technique to produce a temperature-responsive magnetic nanohydrogel (MNHG)...
January 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28099352/acute-pancreatitis-in-patients-with-pancreatic-cancer-timing-of-surgery-and-survival-duration
#15
Shaojun Li, Bole Tian
Acute pancreatitis (AP) is a rare manifestation of pancreatic cancer (PC). The relationship between AP and PC remains less distinct.From January 2009 to November 2015, 47consecutive patients with PC who presented with AP were reviewed for this study. Clinical features, clinicopathologic variables, postoperative complications, and follow-up evaluations of patients were documented in detail from our database. In order to identify cutoff threshold time for surgery, receiver operating curve (ROC) was built according to patients with or without postoperative complications...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28099173/surgical-approach-for-ulcerated-locally-advanced-breast-cancer-a-single-center-experience-a-retrospective-study
#16
Rita Laforgia, Clelia Punzo, Annunziata Panebianco, Annalisa Volpi, Marina Minafra, Maria Grazia Sederino
AIM: The aim of our retrospective study is to analyze surgical possibilities for the extended LABC in those cases not suitable for a neoadjuvant chemotherapy step and to consider various reconstruction techniques. MATERIAL OF STUDY: Between 2009 and 2015 we enrolled 11 patients, admitted to the Emergency Department, presenting ulcerated LABC that needed palliative surgical demolitive procedures because of bleeding and anemia and in which was necessary to use natural tissues transposition or synthetic substitutes for the reconstruction of the skin flaps...
January 12, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28098798/free-radical-scavenging-activity-of-drops-and-spray-containing-propolis-an-epr-examination
#17
Pawel Olczyk, Katarzyna Komosinska-Vassev, Pawel Ramos, Lukasz Mencner, Krystyna Olczyk, Barbara Pilawa
The influence of heating at a temperature of 50 °C and UV-irradiation of propolis drops and spray on their free radical scavenging activity was determined. The kinetics of interactions of the propolis samples with DPPH free radicals was analyzed. Interactions of propolis drops and propolis spray with free radicals were examined by electron paramagnetic resonance spectroscopy. A spectrometer generating microwaves of 9.3 GHz frequency was used. The EPR spectra of the model DPPH free radicals were compared with the EPR spectra of DPPH in contact with the tested propolis samples...
January 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28097821/development-of-actinobacterial-resources-for-functional-cosmetics
#18
Ram Hari Dahal, Dong Seop Shim, Jaisoo Kim
BACKGROUND: Actinobacteria usually produce different functional compounds for various applications. OBJECTIVE: The aim of this research was to develop actinobacterial resources through the isolation and identification of soil bacteria with antibacterial and enzyme inhibitory activities for cosmetics application. METHODS: Soil bacteria were isolated and tested for antibacterial activity against Propionibacterium acnes and Staphylococcus epidermidis using the spotting method...
January 17, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28097599/biosynthesis-characterization-and-bioactivities-evaluation-of-silver-and-gold-nanoparticles-mediated-by-the-roots-of-chinese-herbal-angelica-pubescens-maxim
#19
Josua Markus, Dandan Wang, Yeon-Ju Kim, Sungeun Ahn, Ramya Mathiyalagan, Chao Wang, Deok Chun Yang
A facile synthesis and biological applications of silver (DH-AgNps) and gold nanoparticles (DH-AuNps) mediated by the aqueous extract of Angelicae Pubescentis Radix (Du Huo) are explored. Du Huo is a medicinal root belonging to Angelica pubescens Maxim which possesses anti-inflammatory, analgesic, and antioxidant properties. The absorption spectra of nanoparticles in varying root extract and metal ion concentration, pH, reaction temperatures, and time were recorded by ultraviolet-visible (UV-Vis) spectroscopy...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28097263/predicting-biochemical-recurrence-in-patients-with-high-risk-prostate-cancer-using-the-apparent-diffusion-coefficient-of-magnetic-resonance-imaging
#20
Min Young Yoon, Juhyun Park, Jeong Yeon Cho, Chang Wook Jeong, Ja Hyeon Ku, Hyeon Hoe Kim, Cheol Kwak
PURPOSE: We aimed to investigate whether the apparent diffusion coefficient (ADC) value in diffusion-weighted magnetic resonance imaging predicts the prognoses of patients with high-risk prostate cancer. MATERIALS AND METHODS: A total of 157 patients with high-risk prostate cancer (based on D'Amico's criteria) were included in the analysis. Patients underwent preoperative 3.0 Tesla magnetic resonance imaging within 2 months before radical prostatectomy. Those who received neoadjuvant hormone therapy (33 persons) or radiation therapy (18 persons) were excluded...
January 2017: Investigative and Clinical Urology
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