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https://www.readbyqxmd.com/read/28215039/impact-of-surgical-experience-on-management-and-outcome-of-pancreatic-surgery-performed-in-high-and-low-volume-centers
#1
Marco Stella, Massimiliano Bissolati, Daniele Gentile, Alessandro Arriciati
Pancreaticoduodenectomy (PD) is one of the procedures in general surgery with the highest rate of life-threatening complications. The positive impact of the volume-outcome ratio on outcomes and mortality in pancreatic surgery (PS) has led to policy-level efforts toward centralization of care for PS that is currently under evaluation by some Regional Health Services. The role of the surgeon's experience and training is still under debate. The aim of this paper is to compare the outcomes of PS by the same surgeon in a high volume (HV) and in a low volume (LV) hospital to assess whether a specific training in PS could outdo the benefits of hospital volume...
February 18, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28214760/genotyping-analysis-of-protein-s-tokushima-k196e-and-the-involvement-of-protein-s-antigen-and-activity-in-patients-with-recurrent-pregnancy-loss
#2
Yasushi Matsukawa, Eriko Asano, Tomohide Tsuda, Hiroyuki Kuma, Tamao Kitaori, Kinue Katano, Yasuhiko Ozaki, Mayumi Sugiura-Ogasawara
OBJECTIVE: Preston et al. indicated that Protein S (PS) deficiency was associated with stillbirths but not miscarriages. The PS-Tokushima missense variant was reported to serve as a genetic risk factor for deep vein thrombosis in the Japanese population. A previous cross-sectional study showed no increase in the prevalence of PS-Tokushima in patients with recurrent early pregnancy loss or in patients with intra uterine fetal death and/or fetal growth restriction. There has been limited number of prospective studies examining the pregnancy outcome in patients with both a PS deficiency and recurrent pregnancy loss (RPL)...
February 8, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28213633/associations-between-pain-catastrophizing-and-cognitive-fusion-in-relation-to-pain-and-upper-extremity-function-among-hand-and-upper-extremity-surgery-patients
#3
Sezai Özkan, Emily L Zale, David Ring, Ana-Maria Vranceanu
BACKGROUND: Patients who present to hand surgery practices are at increased risk of psychological distress, pain, and disability. Greater catastrophic thinking about pain is associated with greater pain intensity, and initial evidence suggest that, together, catastrophic thinking about pain and cognitive fusion (i.e., interpretation of thoughts as true) are associated with poorer pain outcomes. PURPOSE: We tested whether cognitive fusion or catastrophic thinking interacts in relation to pain and upper extremity physical function among patients seeking care from a hand surgeon...
February 17, 2017: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/28213397/regional-differences-in-the-preferred-e-vector-orientation-of-honeybee-ocellar-photoreceptors
#4
Yuri Ogawa, Willi Ribi, Jochen Zeil, Jan M Hemmi
In addition to compound eyes, honeybees (Apis mellifera) possess three single lens eyes called ocelli located on the top of the head. Ocelli are involved in head-attitude control and in some insects have been shown to provide celestial compass information. Anatomical and early electrophysiological studies have suggested that UV and blue-green photoreceptors in ocelli are polarization sensitive. However, their retinal distribution and receptor characteristics have not been documented. Here, we used intracellular electrophysiology to determine the relationship between the spectral and polarization sensitivity of photoreceptors and their position within the visual field of the ocelli...
February 17, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28213290/zd0947-a-sulphonylurea-receptor-modulator-detects-functional-sulphonylurea-receptor-subunits-in-murine-vascular-smooth-muscle-atp-sensitive-k-channels
#5
Tadashi Yamamoto, Kohei Takahara, Keiichiro Uchida, Noriyoshi Teramoto
In order to identify functional sulphonylurea receptor (SUR.x) subunits of native ATP-sensitive K(+) channels (KATP channels) in mouse portal vein, the effects of ZD0947, a SUR.x modulator, were investigated on spontaneous portal vein contractions, macroscopic membrane currents and unitary currents recorded (using patch-clamp techniques) in freshly dispersed mouse portal vein myocytes. Spontaneous contractions in mouse portal vein were reversibly reduced by ZD0947 in a concentration-dependent manner (Ki = 293nM)...
February 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28213239/new-urea-modified-paper-substrate-for-enhanced-analytical-performance-of-negative-ion-mode-paper-spray-mass-spectrometry
#6
Jingjing Liu, Yan He, Shuo Chen, Ming Ma, Shouzuo Yao, Bo Chen
Electrospray ionization mass spectrometry (ESI-MS) analysis in the negative ion mode is adversely affected by ionization suppression caused by electrical discharge and the presence of salts. Paper spray mass spectrometry (PS-MS) also suffers from the above phenomenon, being built on principles similar to those of ESI. Herein, we report the use of a paper substrate modified by 1-[3-(trimethoxysilyl)propyl]urea to improve the sensitivity of quantitative PS-MS analysis in the negative ion mode. The obtained results demonstrated that the urea modified paper substrate can effectively bind anions and highly polar compounds in the sample solution, decreasing competitive ionization in the negative ion mode of PS-MS and significantly reducing the signal intensity of Cl(-) adducts...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213053/nerol-triggers-mitochondrial-dysfunction-and-disruption-via-elevation-of-ca-2-and-ros-in-candida-albicans
#7
Jun Tian, Zhaoqun Lu, Yanzhen Wang, Man Zhang, Xueyan Wang, Xudong Tang, Xue Peng, Hong Zeng
The antifungal activity of Nerol (NEL) against Candida albicans, a pathogenic fungus, has a minimum inhibitory concentration (MIC) of 4.4mM that causes noteworthy candidacidal activity through an apoptosis-like mechanism. Calcium (Ca(2+)) levels and reactive oxygen species (ROS) production, which are the major causes of apoptosis, were determined in C. albicans cells treated with NEL and were found to increase, which related to mitochondrial dysfunction and disruption. A series of characteristic changes of apoptosis caused by NEL, including mitochondrial membrane depolarization, cytochrome c (cyt c) release, and metacaspase activation were examined using a flow cytometer and Western blot...
February 14, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28212999/meta-analysis-examining-impact-of-age-on-overall-survival-with-pemetrexed-for-the-treatment-of-advanced-non-squamous-non-small-cell-lung-cancer
#8
Luis G Paz-Ares, Annamaria Zimmermann, Tudor Ciuleanu, Paul A Bunn, Belen San Antonio, Jonathan Denne, Nancy Iturria, William John, Giorgio V Scagliotti
OBJECTIVE: In clinical practice, elderly patients are often undertreated relative to younger patients. This meta-analysis was designed to determine whether older patients with non-squamous non-small cell lung cancer (NSCLC) could derive an overall survival (OS) benefit from pemetrexed treatment comparable to that experienced by younger patients in the first-line, second-line, or maintenance settings. METHODS: Data from 2671 patients with non-squamous NSCLC participating in four pemetrexed phase III studies were included in a meta-analysis using a random-effects model...
February 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28212735/elimination-of-the-unnecessary-intra-and-extracellular-signaling-by-anionic-phospholipids
#9
REVIEW
Valerian E Kagan, Hülya Bayır, Yulia Y Tyurina, Sergey B Bolevich, John J Maguire, Bengt Fadeel, Krishnakumar Balasubramanian
High fidelity of biological systems is frequently achieved by duplication of the essential intracellular machineries or, removal of the entire cell, which becomes unnecessary or even harmful in altered physiological environments. Carefully controlled removal of these cells, without damaging normal cells, requires precise signaling, and is critical to maintaining homeostasis. This review describes how two anionic phospholipids - phosphatidylserine (PS) and cardiolipin (CL) - residing in distinct compartments of the cell, signal removal of "the unnecessary" using several uniform principles...
January 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28212201/health-sector-reform-emotional-exhaustion-and-nursing-burnout-a-retrospective-panel-study-in-iran
#10
Ahmad Kalateh Sadati, Farnaz Rahnavard, Seyed Taghi Heydari, Soroor Hemmati, Najmeh Ebrahimzadeh, Kamran Bagheri Lankarani
BACKGROUND: Nursing burnout is affected by various factors, including work overload. Since the inauguration of the Health Sector Evolution Plan (HSEP) in Iran in 2014, government hospitals have been required to provide health services to the public at all levels. This decision, however, has increased the volume of patients admitted to government hospitals. Because nurses are on the front line of health services, they are faced with a greater load of care provision. PURPOSE: This study aimed to evaluate nursing burnout before and after HSEP in Iran, with an emphasis on the differences between government and private hospitals...
February 16, 2017: Journal of Nursing Research: JNR
https://www.readbyqxmd.com/read/28212098/a-2-5-mw-ch-50-mcps-10-analog-channel-adaptively-biased-read-out-front-end-ic-with-low-intrinsic-timing-resolution-for-single-photon-time-of-flight-pet-applications-with-time-dependent-noise-analysis-in-90-nm-cmos
#11
Hugo Cruz, Hong-Yi Huang, Ching-Hsing Luo, Shuenn-Yuh Lee
This paper presents a 10-channel time-of-flight application-specific integrated circuit (ASIC) for positron emission tomography in a 90 nm standard CMOS process. To overcome variations in channel-to-channel timing resolution caused by mismatch and process variations, adaptive biases and a digital-to-analog converter (DAC) are utilized. The main contributions of this work are as follows. First, multistage architectures reduce the total power consumption, and detection bandwidths of analog preamplifiers and comparators are increased to 1 and 1...
February 13, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28211913/boosting-laser-ion-acceleration-with-multi-picosecond-pulses
#12
A Yogo, K Mima, N Iwata, S Tosaki, A Morace, Y Arikawa, S Fujioka, T Johzaki, Y Sentoku, H Nishimura, A Sagisaka, K Matsuo, N Kamitsukasa, S Kojima, H Nagatomo, M Nakai, H Shiraga, M Murakami, S Tokita, J Kawanaka, N Miyanaga, K Yamanoi, T Norimatsu, H Sakagami, S V Bulanov, K Kondo, H Azechi
Using one of the world most powerful laser facility, we demonstrate for the first time that high-contrast multi-picosecond pulses are advantageous for proton acceleration. By extending the pulse duration from 1.5 to 6 ps with fixed laser intensity of 10(18) W cm(-2), the maximum proton energy is improved more than twice (from 13 to 33 MeV). At the same time, laser-energy conversion efficiency into the MeV protons is enhanced with an order of magnitude, achieving 5% for protons above 6 MeV with the 6 ps pulse duration...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211717/isomeric-character-of-the-lowest-observed-4-state-in-44-s
#13
J J Parker, I Wiedenhöver, P D Cottle, J Baker, D McPherson, M A Riley, D Santiago-Gonzalez, A Volya, V M Bader, T Baugher, D Bazin, A Gade, T Ginter, H Iwasaki, C Loelius, C Morse, F Recchia, D Smalley, S R Stroberg, K Whitmore, D Weisshaar, A Lemasson, H L Crawford, A O Macchiavelli, K Wimmer
Previous experiments observed a 4^{+} state in the N=28 nucleus ^{44}S and suggested that this state may exhibit a hindered E2-decay rate, inconsistent with being a member of the collective ground state band. We populate this state via two-proton knockout from a beam of exotic ^{46}Ar projectiles and measure its lifetime using the recoil distance method with the GRETINA γ-ray spectrometer. The result, 76(14)_{stat}(20)_{syst}  ps, implies a hindered transition of B(E2;4^{+}→2_{1}^{+})=0.61(19) single-particle or Weisskopf units strength and supports the interpretation of the 4^{+} state as a K=4 isomer, the first example of a high-K isomer in a nucleus of such low mass...
February 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28211471/phosphorene-quantum-dot-saturable-absorbers-for-ultrafast-fiber-lasers
#14
J Du, M Zhang, Z Guo, J Chen, X Zhu, G Hu, P Peng, Z Zheng, H Zhang
We fabricate ultrasmall phosphorene quantum dots (PQDs) with an average size of 2.6 ± 0.9 nm using a liquid exfoliation method involving ultrasound probe sonication followed by bath sonication. By coupling the as-prepared PQDs with microfiber evanescent light field, the PQD-based saturable absorber (SA) device exhibits ultrafast nonlinear saturable absorption property, with an optical modulation depth of 8.1% at the telecommunication band. With the integration of the all-fiber PQD-based SA, a continuous-wave passively mode-locked erbium-doped (Er-doped) laser cavity delivers stable, self-starting pulses with a pulse duration of 0...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210861/the-effects-of-alcoholism-and-smoking-on-advanced-cancer-patients-admitted-to-an-acute-supportive-palliative-care-unit
#15
Sebastiano Mercadante, Claudio Adile, Patrizia Ferrera, Alessandra Casuccio
AIM: The aim of this prospective study was to determine the characteristics and symptom burden of advanced cancer patients with alcoholism problems and smoking, who were referred to an acute palliative/supportive care unit (ASPCU) of a comprehensive cancer center. METHODS: Patients' characteristics, indications for admission, kind of admission, awareness of prognosis, and anticancer treatments were recorded. The Edmonton Symptom Assessment Scale (ESAS) was used to assess physical and psychological symptoms, and the CAGE questionnaire for the diagnosis of alcoholism...
February 16, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28210843/updated-results-from-gest-study-a-randomized-three-arm-phase-iii-study-for-advanced-pancreatic-cancer
#16
Takuji Okusaka, H Miyakawa, H Fujii, S Nakamori, T Satoh, Y Hamamoto, T Ito, H Maguchi, S Matsumoto, H Ueno, T Ioka, N Boku, S Egawa, T Hatori, J Furuse, K Mizumoto, S Ohkawa, T Yamaguchi, K Yamao, A Funakoshi, J S Chen, A L Cheng, A Sato, Y Ohashi, M Tanaka
PURPOSE: The GEST study showed non-inferiority of S-1 but not superiority of gemcitabine plus S-1 (GS) to gemcitabine alone for overall survival with the data by the cut-off date of 31st July in 2010 for chemo-naïve patients with advanced pancreatic cancer. We considered it important to determine whether S-1 maintains non-inferiority after a long-term follow-up in the GEST study and to obtain a firm positive conclusion. In addition, it may be an interesting challenge to explore the efficacious profile of GS in the long-term follow-up study...
February 16, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28210229/longitudinal-associations-between-posttraumatic-stress-disorder-severity-and-personality-disorder-features-among-female-rape-survivors
#17
Michelle J Bovin, Erika J Wolf, Patricia A Resick
This study evaluated how change in posttraumatic stress disorder (PTSD) symptoms was associated with residualized change in comorbid personality disorder (PD) features and vice versa over the course of 5-10 years. The sample was comprised of 79 female rape survivors who met criteria for PTSD and who were a part of a larger study examining the effects of trauma-focused therapy. PTSD was assessed with the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) version of the Clinician-Administered PTSD Scale [CAPS-IV (1)] and PD features were assessed with the DSM-IV dimensional PD scales on the Schedule for Non-adaptive and Adaptive Personality [SNAP (2)]...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28209123/relationships-between-longitudinal-neutrophil-to-lymphocyte-ratios-body-weight-changes-and-overall-survival-in-patients-with-non-small-cell-lung-cancer
#18
B A Derman, J N Macklis, M S Azeem, S Sayidine, S Basu, M Batus, F Esmail, J A Borgia, P Bonomi, M J Fidler
BACKGROUND: There is emerging evidence showing a significant relationship between overall survival (OS) in non-small cell lung cancer NSCLC patients and weight change during chemotherapy or chemoradiation. A high neutrophil/lymphocyte ratio (NLR) at baseline and at follow-up is associated with shorter survival in cancer patients and may be a surrogate for ongoing inflammation, implicated in cancer cachexia and tumor progression. The objective of this study is to explore potential relationships between OS, serial weights, and serial NLRs in advanced NSCLC patients receiving chemotherapy...
February 16, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28208487/stimulated-raman-scattering-in-the-relativistic-regime-in-near-critical-plasmas
#19
J G Moreau, E d'Humières, R Nuter, V T Tikhonchuk
Interaction of a high-intensity short laser pulse with near-critical plasmas allows us to achieve extremely high coupling efficiency and transfer laser energy to energetic ions. One-dimensional particle-in-cell simulations are considered to detail the processes involved in the energy transfer. A confrontation of the numerical results with the theory highlights a key role played by the process of stimulated Raman scattering in the relativistic regime. The interaction of a 1 ps laser pulse (I∼6×10^{18}Wcm^{-2} with an undercritical (0...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28207557/resection-after-preoperative-chemotherapy-versus-synchronous-liver-resection-of-colorectal-cancer-liver-metastases-a-propensity-score-matching-analysis
#20
Chan W Kim, Jong L Lee, Yong S Yoon, In J Park, Seok-Byung Lim, Chang S Yu, Tae W Kim, Jin C Kim
This study aimed to determine the prognostic effects of preoperative chemotherapy for colorectal cancer liver metastasis (CLM).We retrospectively evaluated 2 groups of patients between January 2006 and August 2012. A total of 53 patients who had ≥3 hepatic metastases underwent resection after preoperative chemotherapy (preoperative chemotherapy group), whereas 96 patients who had ≥3 hepatic metastases underwent resection with a curative intent before chemotherapy for CLM (primary resection group). A propensity score (PS) model was used to compare the both groups...
February 2017: Medicine (Baltimore)
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