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https://www.readbyqxmd.com/read/28103019/highly-water-stable-novel-lanthanide-wheel-cluster-organic-frameworks-featuring-coexistence-of-hydrophilic-cage-like-chambers-and-hydrophobic-nanosized-channels
#1
Yuan-Yuan Zhou, Yang Shi, Bing Geng, Qi-Bing Bo
In attempts to investigate the potential luminescent sensing materials for sensitive detection of environmental pollutants, a new family of lanthanide wheel cluster organic frameworks (Ln-WCOFs) UJN-Ln4 has been constructed by employing one of the cycloalkane dicarboxylic acid derivatives. Adopting different conformations, the ligand links Ln4 second building units (SBUs) and Ln24 tertiary building unit (TBUs) to form a unique wheel cluster layer-pillared 3D framework featuring the coexistence of hydrophobic nanosized channels and trigonal anti-prism arrays with hydrophilic cage-like chambers...
January 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28102387/anion-dependent-self-assembly-of-sandwich-13-metal-ni-ln-nanoclusters-with-a-long-chain-schiff-base-ligand
#2
Shiqing Wang, Xiaoping Yang, Jinjie Qian, Qipeng Li, Zhongning Chen, Lijie Zhang, Shaoming Huang, Chengri Wang, Richard A Jones
Two classes of Ni-Ln clusters [Ln4Ni3L3(OAc)6(NO3)3(OH)3] (Ln = Gd (1) and Tb (2)) and [Ln6Ni7L6(OAc)12(OH)6](OH)2 (Ln = Gd (3) and Dy (4)) were prepared using a specifically designed Schiff base ligand built around a flexible (CH2)2O(CH2)2O(CH2)2 chain. 1 and 2 exhibit cone-like structures, while 3 and 4 have nanosized sandwich architectures. The structures were studied by single-crystal X-ray diffraction and TEM, and magnetic properties were investigated.
January 19, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28101801/identification-of-changes-in-the-human-papilloma-virus-16-hpv16-genome-during-early-dissemination-of-cervical-cancer-cells-may-complement-histological-diagnosis-of-lymph-node-metastasis
#3
Anirban Roychowdhury, Sudip Samadder, Md Saimul Islam, Kalyansree Chaudhury, Anup Roy, Dipanwita Banerjee, Ranajit Mandal, Partha S Basu, Susanta Roychoudhury, Chinmay Kumar Panda
Cancer of the uterine cervix (CACX) is one of the most common carcinoma affecting women worldwide. During treatment, histologically lymph node (LN) metastasis and presence of HPV DNA in blood plasma act as a major prognostic factor. Despite the lack of apparent LN involvement, some early-invasive CACX patients have shown recurrences and poor survival. This is suggestive of undetected early dissemination of cancer cells characterized by presence of HPV DNA in histologically non-metastatic LNs which finally progresses into histologically visible metastasis...
January 19, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28100833/follicular-cd8-t-cells-accumulate-in-hiv-infection-and-can-kill-infected-cells-in-vitro-via-bispecific-antibodies
#4
Constantinos Petrovas, Sara Ferrando-Martinez, Michael Y Gerner, Joseph P Casazza, Amarendra Pegu, Claire Deleage, Arik Cooper, Jason Hataye, Sarah Andrews, David Ambrozak, Perla M Del Río Estrada, Eli Boritz, Robert Paris, Eirini Moysi, Kristin L Boswell, Ezequiel Ruiz-Mateos, Ilias Vagios, Manuel Leal, Yuria Ablanedo-Terrazas, Amaranta Rivero, Luz Alicia Gonzalez-Hernandez, Adrian B McDermott, Susan Moir, Gustavo Reyes-Terán, Fernando Docobo, Giuseppe Pantaleo, Daniel C Douek, Michael R Betts, Jacob D Estes, Ronald N Germain, John R Mascola, Richard A Koup
Cytolytic CD8 T cells play a crucial role in the control and elimination of virus-infected cells and are a major focus of HIV cure efforts. However, it has been shown that HIV-specific CD8 T cells are infrequently found within germinal centers (GCs), a predominant site of active and latent HIV infection. We demonstrate that HIV infection induces marked changes in the phenotype, frequency, and localization of CD8 T cells within the lymph node (LN). Significantly increased frequencies of CD8 T cells in the B cell follicles and GCs were found in LNs from treated and untreated HIV-infected individuals...
January 18, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28099170/exploring-the-ability-of-the-nalidixate-to-sensitize-visible-and-near-infrared-emitting-lanthanide-iii-cations
#5
Svetlana V Eliseeva, Valerii S Liasotkyi, Iurii P Golovach, Pavel G Doga, Valery P Antonovich, Stéphane Petoud, Svetlana B Meshkova
Recently, a strong interest has been directed towards near-infrared (NIR) emitting lanthanide(III) compounds as they do possess complementary advantages in respect to organic molecules and semi-conductor nanocrystals, especially in the fields of biological analysis and imaging. To benefit from their emission, a key requirement to fulfill is the sensitization of lanthanide(III) cations with an appropriate chromophore. This condition is especially challenging to address for the lanthanide(III) cations emitting in the NIR...
January 18, 2017: Methods and Applications in Fluorescence
https://www.readbyqxmd.com/read/28098445/circular-and-chainlike-copper-ii-lanthanide-iii-complexes-generated-by-assembly-reactions-of-racemic-and-chiral-copper-ii-cross-linking-ligand-complexes-with-ln-iii-no3-3%C3%A2-6h2o-ln-iii-gd-iii-tb-iii-dy-iii
#6
Takahiro Ueno, Takeshi Fujinami, Naohide Matsumoto, Masaki Furusawa, Ryo Irie, Nazzareno Re, Takuya Kanetomo, Takayuki Ishida, Yukinari Sunatsuki
The 1:1 assembly reaction of the racemic form of the cross-linking ligand complex Na[Cu(II)L(dpen(1R2R/1S2S))] with Ln(III)(NO3)3·6H2O gave the centrosymmetric circular (Cu(II)Ln(III))2 complex [Cu(II)L(dpen(1R2R/1S2S))Ln(III)(NO3)2]2 (1Ln: Ln = Gd, Tb, Dy), while the reaction of the enantiopure form Na[Cu(II)L(dpen(1R2R))] with Ln(III)(NO3)3·6H2O gave the chiral chainlike (Cu(II)Ln(III))1∞ complex [Cu(II)L(dpen(1R2R))Ln(III)(NO3)2(CH3CN)]1∞·CH3CN (2Ln: Ln = Gd, Tb, Dy), where {Cu(II)L(dpen(1R2R))}(-) is (N-((1R,2R)-2-(((E)-3-ethoxy-2-oxybenzylidene)amino)-1,2-diphenylethyl)-2-oxybenzamide)copper(II) and {Cu(II)L(dpen(1R2R/1S2S))}(-) is the racemic mixture of {Cu(II)L(dpen(1R2R))}(-) and {Cu(II)L(dpen(1S2S))}(-)...
January 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28097771/solution-synthesis-structure-and-co2-reduction-reactivity-of-a-scandium-ii-complex-sc-n-sime3-2-3
#7
David H Woen, Guo P Chen, Joseph W Ziller, Timothy J Boyle, Filipp Furche, William J Evans
The first crystallographically characterizable complex of Sc(2+) , [Sc(NR2 )3 ](-) (R=SiMe3 ), has been obtained by LnA3 /M reactions (Ln=rare earth metal; A=anionic ligand; M=alkali metal) involving reduction of Sc(NR2 )3 with K in the presence of 2.2.2-cryptand (crypt) and 18-crown-6 (18-c-6) and with Cs in the presence of crypt. Dark maroon [K(crypt)](+) , [K(18-c-6)](+) , and [Cs(crypt)](+) salts of the [Sc(NR2 )3 ](-) anion are formed, respectively. The formation of this oxidation state of Sc is also indicated by the eight-line EPR spectra arising from the I=7/2 (45) Sc nucleus...
January 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28097376/elemental-labelling-and-mass-spectrometry-for-the-specific-detection-of-sulfenic-acid-groups-in-model-peptides-a-proof-of-concept
#8
Mona Sharar, Essa M Saied, Mario C Rodriguez, Christoph Arenz, Maria Montes-Bayón, Michael W Linscheid
Oxidative transformation of cysteine thiol groups into different functional groups is considered a significant posttranslational modification of great importance in pathological and physiological processes. A cysteine sulfenic acid (SA) residue is the transient state for thiol group oxidation and it can react with free thiols to form disulfide bonds or can be further oxidized with reactive oxygen/reactive nitrogen species (ROS/RNS) to form sulfinic and sulfonic acids. The increase in ROS/RNS concentrations is correlated to age-related diseases such as cancer and Alzheimer's disease...
January 17, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28097264/lymph-node-density-predicts-recurrence-and-death-after-inguinal-lymph-node-dissection-for-penile-cancer
#9
Mark W Ball, Zeyad R Schwen, Joan S Ko, Alexa Meyer, George J Netto, Arthur L Burnett, Trinity J Bivalacqua
PURPOSE: To determine the impact of lymph node density (LND) on survival after inguinal lymph node dissection (ILND) for penile cancer. MATERIALS AND METHODS: Our institutional penile cancer database was queried for patients who underwent ILND. Clinicopathologic characteristics including LND and total number of positive lymph nodes (LNs) were analyzed to determine impact on recurrence-free survival (RFS) and overall survival (OS). LND, or the percent of positive LN out of total LN, was calculated as a categorical variable at varying thresholds...
January 2017: Investigative and Clinical Urology
https://www.readbyqxmd.com/read/28095797/cocaine-crack-use-is-not-associated-with-fibrosis-progression-measured-by-ast-to-platelet-ratio-index-in-hiv-hcv-co-infected-patients-a-cohort-study
#10
Valérie Martel-Laferrière, Roy Nitulescu, Joseph Cox, Curtis Cooper, Mark Tyndall, Danielle Rouleau, Sharon Walmsley, Leo Wong, Marina B Klein
BACKGROUND: Cocaine and crack use has been associated with HIV and HCV infections, but its consequences on HCV progression have not been well established. We analyzed the impact of cocaine/crack use on liver fibrosis progression in a cohort of HIV-HCV co-infected patients. METHODS: A Canadian multicenter prospective cohort study followed 1238 HIV-HCV co-infected persons every 6 months between 2003 and 2013. Data were analyzed from 573 patients with positive HCV RNA, not on HCV treatment, without significant liver fibrosis (AST-to-Platelet Ratio Index (APRI) <1...
January 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28095696/properties-of-lanthanide-hydroxide-molecules-produced-in-reactions-of-lanthanide-atoms-with-h2o2-and-h2-o2-mixtures-roles-of-the-i-ii-iii-and-iv-oxidation-states
#11
Xuefeng Wang, Lester Andrews, Zongtang Fang, Kanchana Sahan Thanthiriwatte, Mingyang Chen, David A Dixon
The reactions of laser-ablated lanthanide metal atoms with hydrogen peroxide or hydrogen plus oxygen mixtures have been studied experimentally in a solid argon matrix and theoretically with the ab initio MP2 and CCSD(T) methods. The Ln(OH)3 and Ln(OH)2 molecules and Ln(OH)2(+) cations are the major products and the reactions to form those hydroxides are predicted to be highly exothermic at the CCSD(T) level. Vibronic interations are hypothesized to contribute to the abnormalities in deuterium shifts for Ln-OH(D) stretching modes for several hydroxides, consistent with CASSCF calculations...
January 17, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28095512/models-for-predicting-the-biomass-of-cunninghamialanceolata-trees-and-stands-in-southeastern-china
#12
Mei Guangyi, Sun Yujun, Sajjad Saeed
Using existing equations to estimate the biomass of a single tree or a forest stand still involves large uncertainties. In this study, we developed individual-tree biomass models for Chinese Fir (Cunninghamia lanceolata.) stands in Fujian Province, southeast China, by using 74 previously established models that have been most commonly used to estimate tree biomass. We selected the best fit models and modified them. The results showed that the published model ln(B(Biomass)) = a + b * ln(D) + c * (ln(H))2 + d * (ln(H))3 + e * ln(WD) had the best fit for estimating the tree biomass of Chinese Fir stands...
2017: PloS One
https://www.readbyqxmd.com/read/28094930/fe-and-ln-dotam-f12-are-effective-paramagnetic-fluorine-contrast-agents-for-mri-in-water-and-blood
#13
Kriti Srivastava, Evan A Weitz, Katie L Peterson, Małgorzata Marjańska, Valérie C Pierre
A series of fluorinated macrocyclic complexes, M-DOTAm-F12, where M is La(III), Eu(III), Gd(III), Tb(III), Dy(III), Ho(III), Er(III), Tm(III), Yb(III), and Fe(II), was synthesized, and their potential as fluorine magnetic resonance imaging (MRI) contrast agents was evaluated. The high water solubility of these complexes and the presence of a single fluorine NMR signal, two necessary parameters for in vivo MRI, are substantial advantages over currently used organic polyfluorocarbons and other reported paramagnetic (19)F probes...
January 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28094085/what-is-the-most-accurate-lymph-node-staging-method-for-perihilar-cholangiocarcinoma-comparison-of-uicc-ajcc-pn-stage-number-of-metastatic-lymph-nodes-lymph-node-ratio-and-log-odds-of-metastatic-lymph-nodes
#14
S Conci, A Ruzzenente, M Sandri, F Bertuzzo, T Campagnaro, F Bagante, P Capelli, M D'Onofrio, M Piccino, A E Dorna, C Pedrazzani, C Iacono, A Guglielmi
BACKGROUND: We compared the prognostic performance of the International Union Against Cancer/American Joint Committee on Cancer (UICC/AJCC) 7th edition pN stage, number of metastatic LNs (MLNs), LN ratio (LNR), and log odds of MLNs (LODDS) in patients with perihilar cholangiocarcinoma (PCC) undergoing curative surgery in order to identify the best LN staging method. METHODS: Ninety-nine patients who underwent surgery with curative intent for PCC in a single tertiary hepatobiliary referral center were included in the study...
January 8, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28094055/renal-cell-carcinoma-with-isolated-lymph-node-involvement-long-term-natural-history-and-predictors-of-oncologic-outcomes-following-surgical-resection
#15
Boris Gershman, Daniel M Moreira, R Houston Thompson, Stephen A Boorjian, Christine M Lohse, Brian A Costello, John C Cheville, Bradley C Leibovich
BACKGROUND: Renal cell carcinoma (RCC) with isolated lymph node (LN) involvement has historically been associated with poor prognosis. However, a subset of patients may experience long-term survival. OBJECTIVE: To examine the natural history of RCC with isolated LN involvement following surgical resection with long-term follow-up, and to evaluate clinicopathologic features associated with disease progression and survival. DESIGN, SETTING, AND PARTICIPANTS: A total of 138 patients with isolated pN1M0 RCC underwent partial or radical nephrectomy and LN dissection from 1980 to 2010...
January 13, 2017: European Urology
https://www.readbyqxmd.com/read/28094037/identifying-risk-factors-for-occult-lower-extremity-lymphedema-using-computed-tomography-in-patients-undergoing-lymphadenectomy-for-gynecologic-cancers
#16
Miseon Kim, Dong Hoon Suh, Eun Joo Yang, Myong Cheol Lim, Jin Young Choi, Kidong Kim, Jae Hong No, Yong-Beom Kim
OBJECTIVE: To identify risk factors for lower extremity lymphedema (LEL) using computed tomographic (CT) scan in patients undergoing lymphadenectomy for gynecologic cancers. METHODS: We retrospectively reviewed 511 consecutive gynecologic cancer patients undergoing lymphadenectomy. Mean difference (3.77±3.14mm) of subcutaneous layer thicknesses between preoperative and postoperative 1-year CT scans of 106 patients with clinical LEL was used as an objective criterion for regrouping all the patients into those with mean difference >3...
January 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28094007/obtaining-the-biomechanical-behavior-of-ascending-aortic-aneurysm-via-the-use-of-novel-speckle-tracking-echocardiography
#17
Mohammed Alreshidan, Nastaran Shahmansouri, Jennifer Chung, Vynka Lash, Alexander Emmott, Richard L Leask, Kevin Lachapelle
INTRODUCTION: Ex vivo measurement of ascending aortic biomechanical properties may help understand the risk for rupture or dissection of dilated ascending aortas. A validated in vivo method that can predict aortic biomechanics does not exist. Speckle tracking transesophageal echocardiography (TEE) has been used to measure ventricular stiffness; we sought to determine whether speckle TEE could be adapted to estimate aortic stiffness in vivo and compare these findings with those obtained by ex vivo tissue measurements...
December 20, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28090353/leptin-acylcarnitine-metabolites-and-development-of-adiposity-in-the-rhea-mother-child-cohort-in-crete-greece
#18
W Perng, E Oken, T Roumeliotaki, D Sood, A P Siskos, G Chalkiadaki, E Dermitzaki, M Vafeiadi, S Kyrtopoulos, M Kogevinas, H C Keun, L Chatzi
OBJECTIVE: This study aims to investigate relations of serum leptin at age 4 with development of adiposity and linear growth during 3 years of follow-up among 75 Greek children and to identify serum metabolites associated with leptin at age 4 and to characterize their associations with adiposity gain and linear growth. METHODS: Linear regression models that accounted for maternal age, education and gestational weight gain and child's age and sex were used to examine associations of leptin and leptin-associated metabolites measured at age 4 with indicators of adiposity and linear growth at age 7...
December 2016: Obesity Science & Practice
https://www.readbyqxmd.com/read/28089996/a-comparison-of-lobectomy-and-total-thyroidectomy-for-patients-with-papillary-thyroid-microcarcinoma-a-retrospective-individual-risk-factor-matched-cohort-study
#19
Hyemi Kwon, Min Ji Jeon, Won Gu Kim, Suyeon Park, Mijin Kim, Dong Eun Song, Tae-Yon Sung, Jong Ho Yoon, Suck Joon Hong, Tae Yong Kim, Young-Kee Shong, Won Bae Kim
OBJECTIVE: Papillary thyroid microcarcinoma (PTMC) accounts for most of the increase in thyroid cancer in recent decades. We compared clinical outcomes and surgical complications of lobectomy and total thyroidectomy (TT) for PTMC patients. DESIGN AND METHODS: In this retrospective individual risk factor matched cohort study, 2031 patients with PTMC were initially included. Patients who underwent lobectomy or TT were one-to-one matched according to individual risk factors, including age, sex, primary tumor size, extrathyroidal extension, multifocality, and cervical lymph node (LN) metastasis...
January 15, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28088614/ccaat-enhancer-binding-protein-%C3%AE-promotes-pathogenesis-of-eae
#20
Michelle R Simpson-Abelson, Gerard Hernandez-Mir, Erin E Childs, J Agustin Cruz, Amanda C Poholek, Ansuman Chattopadhyay, Sarah L Gaffen, Mandy J McGeachy
The CCAAT/Enhancer Binding Protein β (C/EBPβ) transcription factor is activated by multiple inflammatory stimuli, including IL-17 and LPS, and C/EBPβ itself regulates numerous genes involved in inflammation. However, the role of C/EBPβ in driving autoimmunity is not well understood. Here, we demonstrate that Cebpb(-/-) mice are resistant to EAE. Cebpb(-/-) mice exhibited reduced lymphocyte and APC infiltration into CNS following EAE induction. Furthermore, MOG-induced Th17 cytokine production was impaired in draining LN, indicating defects in Th17 cell priming...
January 12, 2017: Cytokine
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