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https://www.readbyqxmd.com/read/29141394/proximal-resection-margins-more-prognostic-than-distal-resection-margins-in-patients-undergoing-hilar-cholangiocarcinoma-resection
#1
Tae Yoo, Sang-Jae Park, Sung-Sik Han, Seong Hoon Kim, Seung Duk Lee, Tae Hyun Kim, Soon-Ae Lee, Sang Myung Woo, Woo Jin Lee, Eun Kyung Hong
Purpose: Even though the therapeutic gold standard of hilar cholangiocarcinoma(HCCA) resection is cancer-free resection margin(RM), surgical treatment still remains challenging. This study evaluated the prognostic significance of RM status in resected HCCA patients and identified survival prognostic factors. Materials and Methods: We reviewed records of 96 HCCA patients who underwent surgery from 2001 to 2012 and analyzed the RM status and prognostic factors that affecting survival...
November 16, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29141306/-methods-and-advances-in-the-research-of-lymphatics-in-the-head-and-neck
#2
R Guo, J Tian, Y Jia, P F He, R X Jin, J Guo, B Q Wang
The lymphatic system plays an important role in human health and disease. In addition to a role in the immune response, the lymphatics can also serve as a pathway for cancer metastasis.Head and neck squamous cell carcinoma (HNSCC) is one of the most common cancers.In the case where the primary focus has been controlled, cervical lymph node metastasis is one of the most important factors affecting the prognosis of head and neck cancer.Thus, understanding the anatomy of the lymphatic system is of paramount importance in predicting cancer metastasis and to perform proper lymph node dissection in cancer patients...
November 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29141220/phosphorylation-and-ubiquitination-regulate-protein-phosphatase-5-activity-and-its-prosurvival-role-in-kidney-cancer
#3
Natela Dushukyan, Diana M Dunn, Rebecca A Sager, Mark R Woodford, David R Loiselle, Michael Daneshvar, Alexander J Baker-Williams, John D Chisholm, Andrew W Truman, Cara K Vaughan, Timothy A Haystead, Gennady Bratslavsky, Dimitra Bourboulia, Mehdi Mollapour
The serine/threonine protein phosphatase 5 (PP5) regulates multiple cellular signaling networks. A number of cellular factors, including heat shock protein 90 (Hsp90), promote the activation of PP5. However, it is unclear whether post-translational modifications also influence PP5 phosphatase activity. Here, we show an "on/off switch" mechanism for PP5 regulation. The casein kinase 1δ (CK1δ) phosphorylates T362 in the catalytic domain of PP5, which activates and enhances phosphatase activity independent of Hsp90...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29141195/determination-of-the-effect-of-pinellia-ternata-thunb-breit-on-nervous-system-development-by-proteomics
#4
Jian-Ya Xu, Chen Dai, Jin-Jun Shan, Tong Xie, Hui-Hui Xie, Ming-Ming Wang, Guang Yang
ETHNOPHARMACOLOGICAL RELEVANCE: Banxia (BX) is the dried tuber of Pinellia ternata (Thunb.) Breit., a commonly prescribed Chinese medicinal herb for the treatment of cough, phlegm, and vomiting in pregnant women. However, raw BX has been demonstrated to exert toxic effects on reproduction and the precise and comprehensive mechanisms remain elusive. AIM OF THE STUDY: We applied an iTRAQ (isobaric tags for relative and absolute quantitation, iTRAQ)-based proteomic method to explore the mechanisms of raw BX-induced fetal toxicity in mice...
November 12, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29141191/microbial-lipids-and-added-value-metabolites-production-by-yarrowia-lipolytica-from-pork-lard
#5
Marlene Lopes, Andreia S Gomes, Carla M Silva, Isabel Belo
Yarrowia lipolytica is a suitable microbial platform to convert low-value hydrophobic substrates into microbial oils and other important metabolites. In this work, this yeast species was used to simultaneously synthetize ex novo lipids and produce citric acid and lipase from animal fat (pork lard) adding higher value to the low-cost fatty substrate. The effect of pH, lard concentration, arabic gum concentration and oxygen mass transfer rate (OTR) on lipids accumulation on Y. lipolytica batch cultures was assessed by an experimental design based on Taguchi method...
November 12, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/29141146/the-effect-of-pressure-and-temperature-on-mid-infrared-sensing-of-dissolved-hydrocarbons-in-water
#6
Charles Heath, Matthew B Myers, Bobby Pejcic
Attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy using a polymer coated internal reflection element/waveguide is an established sensor platform for the detection of a range of organic and hydrocarbon molecules dissolved in water. The polymer coating serves two purposes: to concentrate hydrocarbons from the aqueous phase and to exclude water along with other interfering molecules from the surface of the internal reflection element. Crucial to reliable quantification and analytical performance is the calibration of the ATR-FTIR sensor which is commonly performed in water under mild ambient conditions (i...
November 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29141140/n-heterocyclic-carbene-self-assembled-monolayers-on-gold-as-surface-plasmon-resonance-biosensors
#7
Zhijun Li, Kim A Munro, Iraklii I Ebralidze, Mina R Narouz, J Daniel Padmos, Hongxia Hao, Cathleen M Crudden, J Hugh Horton
Surface plasmon resonance (SPR)-based biosensing is a powerful tool to study the recognition processes between biomole-cules in real-time without need for labels. The use of thiol chemistry is a critical component in surface functionalization of various SPR biosensor surfaces on gold. However, its use is hampered by the high propensity for oxidation of the gold-thiol linkage even in ambient atmosphere, resulting in a short lifetime of SPR sensor chips unless strict precautions are taken. Herein, we describe an approach to overcome this limitation by employing highly robust self-assembled monolayers (SAMs) of alkylated N-heterocyclic carbenes (NHCs) on gold...
November 15, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29141136/systemic-mrna-delivery-to-the-lungs-by-functional-polyester-based-carriers
#8
Yunfeng Yan, Hu Xiong, Xinyi Zhang, Qiang Cheng, Daniel John Siegwart
Messenger RNA (mRNA) has recently come into focus as an emerging therapeutic class with great potential for protein replacement therapy, cancer immunotherapy, regenerative medicine, vaccines, and gene editing. However, the lack of effective and safe delivery methods impedes the broad application of mRNA-based therapeutics. Here, we report a robust approach to develop efficient polymeric delivery carriers for mRNA. Lead polyesters were identified by in vitro screening of a 480-member combinatorially modified poly(trimethylolpropane allyl ether-co-suberoyl chloride) library for the delivery of luciferase encoding mRNA (Luc mRNA) to IGROV1 cells...
November 15, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29141130/enhancement-of-l-threonine-production-through-controlling-sequential-carbon-nitrogen-ratios-during-fermentation
#9
Hyeok-Won Lee, Hee-Suk Lee, Chun-Suk Kim, Jin-Gyeom Lee, Won-Kyo Kim, Eun-Gyo Lee, Hong-Weon Lee
Controlling residual glucose concentration is important for improving productivity in L-threonine fermentation. In this study, we developed a procedure to automatically control the feeding quantity of glucose solution as a function of ammonia-water consumption rate. The feeding ratio (Rc/n) of glucose and ammonia water was pre-determined via a stoichiometric approach, based on glucose-ammonia water consumption rates. In a 5-L fermenter, 102 g/L L-threonine was obtained using our glucose-ammonia water combined feeding strategy, which was then successfully applied in a 500-L fermenter (89g/L)...
November 15, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29141129/recent-trends-in-salmonella-outbreaks-and-emerging-technology-for-biocontrol-of-salmonella-using-phages-in-foods-a-review
#10
REVIEW
Jun-Hyun Oh, Mi-Kyung Park
Salmonella is one of the principal causes of foodborne outbreaks. As traditional control methods have shown efficacy against emerging Salmonella serotypes or antimicrobial-resistant Salmonella, new approaches have been attempted. The use of lytic phages for the biocontrol of Salmonella in food industry has become an attractive method owing to the many advantages offered by the use of phages as biocontrol agents. Phages are natural alternatives to traditional antimicrobial agents; they have proven effective in the control of bacterial pathogens in food industry, which has led to the development of different phage products...
November 15, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29141102/statistically-optimized-ceftriaxone-sodium-biotransformation-through-achromobacter-xylosoxidans-strain-cef6-an-unusual-insight-for-bioremediation
#11
Ahmed Anan, Khaled M Ghanem, Amira M Embaby, Ahmed Hussein, Moustafa Y El-Naggar
The present study underlines a unique promising approach toward efficient biotransformation of ceftriaxone sodium (Ceftx), a highly frequent prescribed cephalosporin antibiotic, by a newly bacterium namely Achromobacter xylosoxidans strain Cef6 isolated from Ceftx contaminated raw materials in pharmaceutical industries. A three step sequential statistical-mathematical approach (Plackett-Burman design [PBD], Central Composite Design [CCD], and ridge-canonical analyses) was anticipated to optimize the biotransformation process...
November 15, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/29141096/quantifying-publication-bias-in-meta-analysis
#12
Lifeng Lin, Haitao Chu
Publication bias is a serious problem in systematic reviews and meta-analyses, which can affect the validity and generalization of conclusions. Currently, approaches to dealing with publication bias can be distinguished into two classes: selection models and funnel-plot-based methods. Selection models use weight functions to adjust the overall effect size estimate and are usually employed as sensitivity analyses to assess the potential impact of publication bias. Funnel-plot-based methods include visual examination of a funnel plot, regression and rank tests, and the nonparametric trim and fill method...
November 15, 2017: Biometrics
https://www.readbyqxmd.com/read/29141079/visual-function-response-to-ocriplasmin-for-the-treatment-of-vitreomacular-traction-and-macular-hole-the-oasis-study
#13
Benedicte Lescrauwaet, Luc Duchateau, Thomas Verstraeten, Timothy L Jackson
Purpose: To assess the effect of ocriplasmin on visual function response (VFR) measured using visual acuity (VA) and vision-related quality of life, and to quantify the association between release of vitreomacular adhesion (VMA) at day 28 and VFR. Methods: Prespecified analysis of secondary endpoints from a randomized controlled trial. Of 220 participants with symptomatic VMA/vitreomacular traction (VMT), including VMT associated with a macular hole up to 400 μm, 146 received a single intravitreal injection of 125 μg ocriplasmin and 74 a sham injection...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29141048/microcirculation-in-open-vs-minimally-invasive-dorsal-stabilization-of-thoracolumbar-fractures
#14
Bergita Ganse, Miguel Pishnamaz, Philipp Kobbe, Christian Herren, Gertraud Gradl-Dietsch, Franziska Böhle, Bernd Johannes, Bong-Sung Kim, Klemens Horst, Matthias Knobe
Standard open and percutaneous minimally invasive surgical procedures co-exist in the treatment of fractures of the thoracolumbar spine. Shorter skin incisions just above the pedicles are used in minimally invasive procedures. Full-length skin incisions and invasive preparations are applied in the standard open approach. While both methods show equivalent rates of intraoperative surgical complications and comparable clinical and radiological outcomes, blood loss and operation time have shown to be decreased in minimally invasive treatment...
2017: PloS One
https://www.readbyqxmd.com/read/29141036/the-disjunct-pattern-of-the-neotropical-harvestman-discocyrtus-dilatatus-gonyleptidae-explained-by-climate-driven-range-shifts-in-the-quaternary-paleodistributional-and-molecular-evidence
#15
Julia Vergara, Luis E Acosta, Raúl E González-Ittig, Luis M Vaschetto, Cristina N Gardenal
The disjunct distribution of the harvestman Discocyrtus dilatatus (Opiliones, Gonyleptidae) is used as a case study to test the hypothesis of a trans-Chaco Pleistocene paleobridge during range expansion stages. This would have temporarily connected humid regions ('Mesopotamia' in northeastern Argentina, and the 'Yungas' in the northwest, NWA) in the subtropical and temperate South American lowlands. The present study combines two independent approaches: paleodistributional reconstruction, using the Species Distribution Modeling method MaxEnt and projection onto Quaternary paleoclimates (6 kya, 21 kya, 130 kya), and phylogeographic analyses based on the cytochrome oxidase subunit I molecular marker...
2017: PloS One
https://www.readbyqxmd.com/read/29140989/joint-approach-based-on-clinical-and-imaging-features-to-distinguish-non-neoplastic-from-neoplastic-pituitary-stalk-lesions
#16
Ji Ye Lee, Ji Eun Park, Woo Hyun Shim, Seung Chai Jung, Choong Gon Choi, Sang Joon Kim, Jeong Hoon Kim, Ho Sung Kim
PURPOSE: Distinguishing non-neoplastic pituitary stalk lesions (non-NPSLs) from neoplastic pituitary stalk lesions (NPSLs) is a major concern in guiding treatment for a thickened pituitary stalk. Our study aimed to aid provide preoperative diagnostic assistance by combining clinical and magnetic resonance imaging (MRI) findings to distinguish non-NPSLs from NPSLs. MATERIALS AND METHODS: We recruited 158 patients with thickened pituitary stalk lesions visible on MRI...
2017: PloS One
https://www.readbyqxmd.com/read/29140932/characteristics-of-treatment-experienced-hiv-infected-african-children-and-adolescents-initiating-darunavir-and-or-etravirine-based-antiretroviral-treatment
#17
Bethany Corrigan, Irene Mukui, Lloyd Mulenga, Nobuhle Mthethwa, Mosilinyane Letsie, Stephanie Bruno, Natella Rakhmanina
BACKGROUND: Data are limited on the selection and sequencing of second and third-line pediatric antiretroviral treatment (ART) in resource-limited settings. This study aimed to evaluate characteristics of African pediatric patients initiated on darunavir (DRV) and/or etravirine (ETR) through a specific drug donation program. METHODS: This was a cross-sectional study of baseline immunologic, virologic and demographic characteristics of children and adolescents initiating DRV- and/or ETR-based ART...
November 14, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29140919/collaboration-and-teamwork-in-the-health-professions-rethinking-the-role-of-conflict
#18
Quentin Eichbaum
Whereas the business professions have long recognized that conflict can be a source of learning and innovation, the health professions still tend to view conflict negatively as being disruptive, inefficient, and unprofessional. As a consequence, the health professions tend to avoid conflict or resolve it quickly. This neglect to appreciate conflict's positive attributes appears to be driven in part by (1) individuals' fears about being negatively perceived and the potential negative consequences in an organization of being implicated in conflict, (2) constrained views and approaches to professionalism and to evaluation and assessment, and (3) lingering autocracies and hierarchies of power that view conflict as a disruptive threat...
November 14, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/29140917/medical-trainees-experiences-of-treating-people-with-chronic-pain-a-lost-opportunity-for-medical-education
#19
Kathleen Rice, Jae Eun Ryu, Cynthia Whitehead, Joel Katz, Fiona Webster
PURPOSE: Evidence suggests that physicians' opinions about chronic pain patients become progressively negative over the course of medical training, leading to a decline in empathy for these patients. Few qualitative studies have focused on this issue and thus the experiences shaping this process remain unexplored. This study addressed how medical trainees learn about chronic pain management through informal and formal curricula. METHOD: This study adopted a descriptive qualitative interview-based approach informed by the theoretical lens of the hidden curriculum...
November 14, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/29140912/reliable-testing-battery-for-assessing-physical-qualities-of-elite-academy-rugby-league-players
#20
Nick Dobbin, Richard Hunwicks, Jamie Highton, Craig Twist
Dobbin, N, Hunwicks, R, Highton, J, and Twist, C. Reliable testing battery for assessing physical qualities of elite academy rugby league players. J Strength Cond Res XX(X): 000-000, 2017-This study assessed the interday reliability of a testing battery for the assessment of physical qualities of rugby league players. Fifty players (age 17.1 ± 1.1 years; stature 181.3 ± 6.3 cm; and body mass 89.0 ± 11.6 kg) from 3 Super League academies participated in this study. Tests of countermovement jump performance, 10- and 20-m sprint performance, change of direction, medicine ball throw, and a modified Yo-Yo Intermittent Recovery Test Level 1 (prone Yo-Yo IR1) were completed on 3 separate occasions...
November 14, 2017: Journal of Strength and Conditioning Research
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