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https://www.readbyqxmd.com/read/28100061/outpatient-palliative-care-and-aggressiveness-of-end-of-life-care-in-patients-with-metastatic-colorectal-cancer
#1
Si Won Lee, Hyun Jung Jho, Ji Yeon Baek, Eun Kyung Shim, Hyun Mi Kim, Ji Yeon Ku, Eun Jung Nam, Yoon-Jung Chang, Hye Jin Choi, Sun Young Kim
BACKGROUND: Palliative care in outpatient setting has been shown to promote better symptom management and transition to hospice care among patients with advanced cancer. Nevertheless, specialized palliative care is rarely provided at cancer centers in Korea. Herein, we aimed to assess aggressiveness of end-of-life care for patients with metastatic colorectal cancer according to the use of outpatient palliative care (OPC) at a single cancer center in Korea. METHODS: We performed a retrospective medical record review for 132 patients with metastatic colorectal cancer who died between 2011 and 2014...
January 1, 2017: American Journal of Hospice & Palliative Care
https://www.readbyqxmd.com/read/28094212/sparing-of-high-retropharyngeal-nodal-basins-in-patients-with-unilateral-oropharyngeal-carcinoma-treated-with-intensity-modulated-radiation-therapy
#2
Jonathan E Leeman, Stanley Gutiontov, Paul Romesser, Sean McBride, Nadeem Riaz, Nancy Lee, C Jillian Tsai
PURPOSE: The introduction of intensity modulated radiotherapy (IMRT) has facilitated dose painting and sparing of uninvolved/low-risk nodal basins in head and neck cancers. In oropharynx cancer (OPC), the need for elective coverage of uninvolved high contralateral retropharyngeal (RP) nodes and the risk associated with sparing this region remain unclear. We examined outcomes of OPC patients treated with IMRT and omission of contralateral high RP coverage. METHODS AND MATERIALS: We identified 102 OPC patients with cN0-N2b disease treated with definitive IMRT with or without concurrent chemotherapy between 2010 and 2013...
November 11, 2016: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28093931/usefulness-of-human-papillomavirus-detection-in-oral-rinse-as-a-biomarker-of-oropharyngeal-cancer
#3
Hiroshi Yoshida, Shigeyuki Murono, Takayoshi Ueno, Yosuke Nakanishi, Akira Tsuji, Miyako Hatano, Kazuhira Endo, Satoru Kondo, Hisashi Sugimoto, Naohiro Wakisaka, Tomokazu Yoshizaki
CONCLUSION: The detection of human papillomavirus (HPV)-DNA in oral rinse with auto-nested GP5+/GP6 + PCR is useful as a biomarker of oropharyngeal cancer. BACKGROUND: This study aimed to determine the usefulness of oral rinse to detect HPV-DNA as a biomarker of HPV-positive oropharyngeal cancer (OPC). PATIENTS AND METHODS: One hundred and ten patients with various head and neck diseases, including 19 patients with OPC, were enrolled. Oral rinse and tonsillar swab were collected, and auto-nested GP5+/GP6 + PCR for HPV-DNA was performed...
January 17, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28093710/role-of-oligodendrocyte-dysfunction-in-demyelination-remyelination-and-neurodegeneration-in-multiple-sclerosis
#4
Adriana Octaviana Dulamea
Oligodendrocytes (OLs) are the myelinating cells of the central nervous system (CNS) during development and throughout adulthood. They result from a complex and well controlled process of activation, proliferation, migration and differentiation of oligodendrocyte progenitor cells (OPCs) from the germinative niches of the CNS. In multiple sclerosis (MS), the complex pathological process produces dysfunction and apoptosis of OLs leading to demyelination and neurodegeneration. This review attempts to describe the patterns of demyelination in MS, the steps involved in oligodendrogenesis and myelination in healthy CNS, the different pathways leading to OLs and myelin loss in MS, as well as principles involved in restoration of myelin sheaths...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28093081/the-most-important-questions-in-cancer-research-and-clinical-oncology-question-1-could-the-vertical-transmission-of-human-papilloma-virus-hpv-infection-account-for-the-cause-characteristics-and-epidemiology-of-hpv-positive-oropharyngeal-carcinoma-non-smoking
#5
Joseph T S Wee, Sharon Shuxian Poh
Specific research foci: (1) Mouse models of gamma-herpes virus-68 (γHV-68) and polyomavirus (PyV) infections during neonatal versus adult life. (2) For human papilloma virus (HPV)-positive oropharyngeal carcinoma (OPC)-(a) Asking the question: Is oral sex a powerful carcinogen? (b) Examining the evidence for the vertical transmission of HPV infection. (c) Examining the relationship between HPV and Epstein-Barr virus (EBV) infections and nasopharyngeal cancer (NPC) in West European, East European, and East Asian countries...
January 16, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28092695/absorption-distribution-and-excretion-of-the-anti-tuberculosis-drug-delamanid-in-rats-extensive-tissue-distribution-suggests-potential-therapeutic-value-for-extrapulmonary-tuberculosis
#6
Masakazu Shibata, Yoshihiko Shimokawa, Katsunori Sasahara, Noriaki Yoda, Hiroyuki Sasabe, Mitsunari Suzuki, Ken Umehara
Delamanid (OPC-67683, Deltyba(TM) , nitro-dihydro-imidazooxazoles derivative) is approved for the treatment of adult pulmonary multidrug-resistant tuberculosis. The absorption, distribution, and excretion of delamanid-derived radioactivity were investigated after a single oral administration of (14) C-delamanid at 3 mg/kg to rats. In both male and female rats, radioactivity in blood and all tissues reached peak levels by 8 or 24 hours postdose, and thereafter decreased slowly. Radioactivity levels were 3- to 5-fold higher in lung tissue at time to maximum concentration compared with plasma...
January 16, 2017: Biopharmaceutics & Drug Disposition
https://www.readbyqxmd.com/read/28092084/iron-availability-compromises-not-only-oligodendrocytes-but-also-astrocytes-and-microglial-cells
#7
Maria Victoria Rosato-Siri, Leandro Marziali, María Eugenia Guitart, Maria Elvira Badaracco, Mariana Puntel, Fernando Pitossi, Jorge Correale, Juana Maria Pasquini
When disrupted, iron homeostasis negatively impacts oligodendrocyte (OLG) differentiation and impairs myelination. To better understand myelin formation and OLG maturation, in vivo and in vitro studies were conducted to evaluate the effect of iron deficiency (ID) not only on OLG maturation but also on astrocytes (AST) and microglial cells (MG). In vivo experiments in an ID model were carried out to describe maturational events during OLG and AST development and the reactive profile of MG during myelination when iron availability is lower than normal...
January 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28091963/pilot-test-of-survey-to-assess-dental-and-dental-hygiene-student-human-papillomavirus-related-oropharyngeal-cancer-knowledge-perceptions-and-clinical-practices
#8
Holdunn Rutkoski, Brynn Fowler, Ryan Mooney, Lisa Pappas, Barbara L Dixon, Lilliam M Pinzon, James Winkler, Deanna Kepka
This was the first study to develop and pilot test an assessment tool for the examination of human papillomavirus (HPV)-related oropharyngeal cancer (OPC) knowledge, perceptions, and clinical practices of oral health students. An interdisciplinary team developed the tool using surveys that examined this topic in other populations. The tool was then pilot tested at two different dental programs. Results from the pilot informed revisions to the final version of the tool. Of the 46 student participants, 18 were first-year dental hygiene and 28 were first-year dental students...
January 14, 2017: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/28091609/leptin-sustains-spontaneous-remyelination-in-the-adult-central-nervous-system
#9
Ken Matoba, Rieko Muramatsu, Toshihide Yamashita
Demyelination is a common feature of many central nervous system (CNS) diseases and is associated with neurological impairment. Demyelinated axons are spontaneously remyelinated depending on oligodendrocyte development, which mainly involves molecules expressed in the CNS environment. In this study, we found that leptin, a peripheral hormone secreted from adipocytes, promoted the proliferation of oligodendrocyte precursor cells (OPCs). Leptin increased the OPC proliferation via in vitro phosphorylation of extracellular signal regulated kinase (ERK); whereas leptin neutralization inhibited OPC proliferation and remyelination in a mouse model of toxin-induced demyelination...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28077718/integrin-linked-kinase-ilk-deletion-disrupts-oligodendrocyte-development-by-altering-cell-cycle
#10
Rashad Hussain, Wendy B Macklin
: During development, oligodendrocytes are initially specified, after which oligodendrocyte precursor cells (OPCs) migrate and proliferate before differentiating into myelinating cells. Lineage-specific programming of oligodendrocytes results from sensing environmental cues through membrane-bound receptors and related intracellular signaling molecules. Integrin-linked kinase (ILK) is an important protein that is expressed at the inner margins of the plasma membrane and can mediate some of these signals...
January 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28072763/epithelial-to-mesenchymal-transition-and-hpv-infection-in-squamous-cell-oropharyngeal-carcinomas-the-papillophar-study
#11
Marine Lefevre, Alexandra Rousseau, Thomas Rayon, Véronique Dalstein, Christine Clavel, Agnès Beby-Defaux, Jean-Luc Pretet, Patrick Soussan, Myriam Polette, Jean Lacau Saint Guily, Philippe Birembaut
BACKGROUND: Human Papillomavirus (HPV) infection is recognised as aetiological factor of carcinogenesis in oropharyngeal squamous cell carcinomas (OPC). HPV-related OPC respond better to treatments and have a significantly favourable outcome. Epithelial to mesenchymal transition (EMT) implicated in tumour invasion, is a hallmark of a poor prognosis in carcinomas. METHODS: We have studied the relationship of EMT markers (E-cadherin, β-catenin and vimentin) with HPV infection (DNA and E6/E7 mRNA detection), p16(INK4a) expression and survival outcomes in a cohort of 296 patients with OPC...
January 10, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28069926/creatine-enhances-mitochondrial-mediated-oligodendrocyte-survival-following-demyelinating-injury
#12
Kelly A Chamberlain, Kristen S Chapey, Sonia E Nanescu, Jeffrey K Huang
: Chronic oligodendrocyte loss, which occurs in the demyelinating disorder multiple sclerosis (MS), contributes to axonal dysfunction and neurodegeneration. Current therapies are able to reduce MS severity, but do not prevent transition into the progressive phase of the disease, which is characterized by chronic neurodegeneration. Therefore, pharmacological compounds that promote oligodendrocyte survival could be beneficial for neuroprotection in MS. Here, we investigated the role of creatine, an organic acid involved in ATP buffering, in oligodendrocyte function...
January 9, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28063880/glur3b-ab-s-induced-oligodendrocyte-precursor-cells-excitotoxicity-via-mitochondrial-dysfunction
#13
Yi Liu, Yan Chen, Wan Tong Du, Xiu Xiang Wu, Fu Xing Dong, Xue Bin Qu, Hong Bin Fan, Rui Qin Yao
Studies have indicated that glutamate receptor subunit 3 peptide B antibodies (GluR3B Ab's) by directing against a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid subtype glutamate receptors (AMPARs) subunit 3 (GluR3B) was involved in the hippocampal neuron damage in the pathogenesis of epilepsy. Glutamate accumulation is critical for oligodendrocyte precursors (OPCs) excitotoxic injury. However, remarkably little is known about whether GluR3B Ab's causes OPCs excitotoxicity, and the underlying mechanisms remain unclear...
January 4, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28055120/evaluation-of-proposed-staging-systems-for-human-papillomavirus-related-oropharyngeal-squamous-cell-carcinoma
#14
Ian-James Malm, Caleb J Fan, Linda X Yin, David X Li, Wayne M Koch, Christine G Gourin, Karen T Pitman, Jeremy D Richmon, William H Westra, Hyunseok Kang, Harry Quon, David W Eisele, Carole Fakhry
BACKGROUND: Patients with human papillomavirus (HPV)-related oropharyngeal cancer (OPC) have improved survival when compared with those with HPV-negative OPC. Unfortunately, the American Joint Committee on Cancer seventh edition (AJCC-7ed) staging system does not account for the prognostic advantage observed with HPV-positive OPC. The purpose of the current study was to validate and compare 2 recently proposed staging systems for HPV-positive OPC. METHODS: Patients treated for HPV-positive OPC from 2005 to 2015 at Johns Hopkins Hospital (JHH) were included for analysis...
January 5, 2017: Cancer
https://www.readbyqxmd.com/read/28045904/the-value-of-a-checklist-for-child-abuse-in-out-of-hours-primary-care-to-screen-or-not-to-screen
#15
Maartje Cm Schouten, Henk F van Stel, Theo Jm Verheij, Michiel L Houben, Ingrid Mb Russel, Edward Es Nieuwenhuis, Elise M van de Putte
OBJECTIVES: To assess the diagnostic value of the screening instrument SPUTOVAMO-R2 (checklist, 5 questions) for child abuse at Out-of-hours Primary Care locations (OPC), by comparing the test outcome with information from Child Protection Services (CPS). Secondary, to determine whether reducing the length of the checklist compromises diagnostic value. METHODS: All children (<18 years) attending one of the participating OPCs in the region of Utrecht, the Netherlands, in a year time, were included...
2017: PloS One
https://www.readbyqxmd.com/read/28038798/cardiovascular-risk-in-chronic-autoimmune-thyroiditis-and-subclinical-hypothyroidism-patients-a-cluster-analysis
#16
Giovanni Carbotta, Francesco Tartaglia, Alessandro Giuliani, Sabino Carbotta, Luciana Tromba, Ilaria Jacomelli, Livia De Anna, Angela Fumarola
BACKGROUND: Subclinical hypothyroidism (SCH) and chronic autoimmune thyroiditis (CAT) are linked to an increased risk of atherosclerosis and coronary heart disease (CHD). The aim of this study was to look for positive markers of CHD and correlations with thyroid blood tests in patients with SCH or CAT, but no symptoms of CHD, so as to identify CHD risk conditions that otherwise would likely be missed. METHODS: We measured a series of thyroid, clinical-metabolic and cardiovascular parameters in 30 consecutive endocrinology patients enrolled in our ambulatory endocrinological referral center of "Sapienza" University of Rome...
December 21, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28033654/rat-astrocytes-are-more-supportive-for-mouse-opc-self-renewal-than-mouse-astrocytes-in-culture
#17
Xuejun Cheng, Binghua Xie, Jiajun Qi, Xiaofeng Zhao, Zunyi Zhang, Mengsheng Qiu, Junlin Yang
Mouse primary OPCs are increasingly used to study the molecular mechanisms underlying the phenotype changes in oligodendrocyte differentiation and axonal myelination observed in transgenic or mutant mouse models. However, mouse OPCs are much more difficult to be isolated by the simple dissociation culture of brain tissues than their rat counterparts. To date, the mechanisms underlying the species difference in OPC preparation remain obscure. In this study, we showed that astrocytes from rats have a stronger effect than those from mouse in promoting OPC proliferation and survival in vitro...
December 29, 2016: Developmental Neurobiology
https://www.readbyqxmd.com/read/28033005/predicting-rna-structures-via-a-simple-van-der-waals-correction-to-an-all-atom-force-field
#18
Changwon Yang, Manho Lim, Eunae Kim, Youngshang Pak
We proposed a simple van der Waals backbone correction (O2' and OP) to the AMBER ff12 force field in conjunction with the OPC water via an unequal Lorentz-Berthelot combination rule. As tested on four different tetranuceotides such as r(GACC), r(CCCC), r(AAAA), and r(CAAU), this new force field correctly captured each native fold as the largest population. For a RNA tetraloop (UUCG) tested, the stability of its native fold is substantially improved.
January 3, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28024723/the-prevalence-and-risk-factors-associated-with-osteoradionecrosis-of-the-jaw-in-oral-and-oropharyngeal-cancer-patients-treated-with-intensity-modulated-radiation-therapy-imrt-the-memorial-sloan-kettering-cancer-center-experience
#19
Adepitan A Owosho, C Jillian Tsai, Ryan S Lee, Haley Freymiller, Arvin Kadempour, Spyridon Varthis, Adi Z Sax, Evan B Rosen, SaeHee K Yom, Joseph Randazzo, Esther Drill, Elyn Riedel, Snehal Patel, Nancy Y Lee, Joseph M Huryn, Cherry L Estilo
OBJECTIVE: To determine the prevalence and correlation of various risk factors [radiation dose, periodontal status, alcohol and smoking] to the development of osteoradionecrosis (ORN). PATIENTS AND METHODS: The records of 1023 patients treated with IMRT for oral cavity cancer (OCC) and oropharyngeal cancer (OPC) between 2004 and 2013 were retrospectively reviewed to identify patients who developed ORN. Fisher exact tests were used to analyze patient characteristics between ORN patients with OCC and OPC...
January 2017: Oral Oncology
https://www.readbyqxmd.com/read/28024722/the-role-of-hpv-on-the-risk-of-second-primary-neoplasia-in-patients-with-oropharyngeal-carcinoma
#20
María Martel, Laia Alemany, Miren Taberna, Marisa Mena, Sara Tous, Silvia Bagué, Xavier Castellsagué, Miquel Quer, Xavier León
OBJECTIVES: It has been reported that patients with HPV-positive oropharyngeal cancer (OPC) have a lower risk of appearance of second primary neoplasm (SPN) than HPV-negative OPC patients. The aim of our study was to analyze the risk of developing SPN in a large group of patients with OPC according to HPV status in the primary tumor. MATERIALS AND METHODS: We included 412 OPC patients treated at our center from 1991 to 2014 for which the HPV DNA positivity was evaluated by PCR in available tumor specimens...
January 2017: Oral Oncology
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