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https://www.readbyqxmd.com/read/28212036/development-of-ion-conductive-and-vapoluminescent-porous-coordination-polymers-composed-of-ruthenium-ii-metalloligand
#1
Ayako Watanabe, Atsushi Kobayashi, Erika Saitoh, Yuki Nagao, Shun Omagari, Takayuki Nakanishi, Yasuchika Hasegawa, W M C Sameera, Masaki Yoshida, Masako Kato
We synthesized two new porous coordination polymers (PCPs) {Ln7(OH)5[Ru(dcbpy)3]4·4nH2O} (Ln7-Ru4; Ln = Ce, Nd) composed of the luminescent ruthenium(II) metalloligand [Ru(4,4'-dcbpy)3](4-) ([4Ru]; 4,4'-dcbpy = 4,4'-dicarboxy-2,2'-bipyridine) and lanthanide ions Ln(3+) (Ln = Ce, Nd). These two PCPs Ln7-Ru4 are isomorphous with the previously reported PCP La7-Ru4, and the lattice constants (a, c, and unit cell volume V) changed systematically according to the lanthanide contraction. All three Ln7-Ru4 compounds have OH(-) anion containing porous structures and a large number of hydrate water molecules within the pores, resulting in moderate ion conductivities (10(-6)-10(-7) S cm(-1)) at 90% relative humidity (RH) and 298 K...
February 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28211688/functionalized-triptycene-derived-tripodal-ligands-privileged-formation-of-tetranuclear-cage-assemblies-with-larger-ln-iii
#2
Alexandra Vuillamy, Soumaila Zebret, Céline Besnard, Virginie Placide, Stéphane Petoud, Josef Hamacek
In this Article, we report the self-assembly of lanthanide complexes formed with two new tripodal ligands, L2 and L3, where binding strands are connected to a rigid triptycene anchor. The pyridine moieties are functionalized with methoxy and PEG groups to enhance ligand solubility and to evaluate the effect of these substituents on lanthanide coordination. These ligands were successfully synthesized and characterized, and their coordination properties were examined along the lanthanide series through speciation studies with NMR and ESI-MS...
February 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28211682/exploring-the-influence-of-diamagnetic-ions-on-the-mechanism-of-magnetization-relaxation-in-co-iii-2ln-iii-2-ln-dy-tb-ho-butterfly-complexes
#3
Kuduva R Vignesh, Stuart K Langley, Keith S Murray, Gopalan Rajaraman
The synthesis and magnetic and theoretical studies of three isostructural heterometallic [Co(III)2Ln(III)2(μ3-OH)2(o-tol)4(mdea)2(NO3)2] (Ln = Dy (1), Tb (2), Ho (3)) "butterfly" complexes are reported (o-tol = o-toluate, (mdea)(2-) = doubly deprotonated N-methyldiethanolamine). The Co(III) ions are diamagnetic in these complexes. Analysis of the dc magnetic susceptibility measurements reveal antiferromagnetic exchange coupling between the two Ln(III) ions for all three complexes. ac magnetic susceptibility measurements reveal single-molecule magnet (SMM) behavior for complex 1, in the absence of an external magnetic field, with an anisotropy barrier Ueff of 81...
February 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28211204/evaluation-of-the-enhanced-permeability-and-retention-effect-in-the-early-stages-of-lymph-node-metastasis
#4
Mamoru Mikada, Ariunbuyan Sukhbaatar, Yoshinobu Miura, Sachiko Horie, Maya Sakamoto, Shiro Mori, Tetsuya Kodama
Most solid cancers spread to new sites via the lymphatics before hematogenous dissemination. However, only a small fraction of an intravenously administered anti-cancer drug enters the lymphatic system to reach metastatic lymph nodes (LNs). Here, we show that the enhanced permeability and retention (EPR) effect is not induced during the early stages of LN metastasis. Luciferase-expressing tumor cells were injected into the subiliac LN of the MXH10/Mo-lpr/lpr mouse to induce metastasis to the proper axillary LN (PALN)...
February 17, 2017: Cancer Science
https://www.readbyqxmd.com/read/28211072/the-diagnosis-of-pancreatic-mucinous-cystic-neoplasm-and-associated-adenocarcinoma-in-males-an-eight-institution-study-of-349-patients-over-15-years
#5
Cecilia G Ethun, Lauren M Postlewait, Mia R McInnis, Nipun Merchant, Alexander Parikh, Kamran Idrees, Chelsea A Isom, William Hawkins, Ryan C Fields, Matthew Strand, Sharon M Weber, Clifford S Cho, Ahmed Salem, Robert C G Martin, Charles R Scoggins, David Bentrem, Hong J Kim, Jacquelyn Carr, Syed A Ahmad, Daniel E Abbott, Gregory Wilson, David A Kooby, Shishir K Maithel
BACKGROUND: Per WHO, 2000 classification, pancreatic mucinous cystic neoplasms (MCN) are defined by presence of ovarian stroma, and are primarily located in the pancreatic body/tail of females. The incidence of MCN and associated malignancy in males, since, standardization of MCN diagnostic-criteria is unknown. METHODS: MCN resections from 2000 to 2014 at eight institutions of the Central-Pancreas-Consortium were included, and divided into early (2000-2007) and late (2008-2014) time-periods...
February 17, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28210802/poorly-differentiated-colorectal-neuroendocrine-tumour-ct-differentiation-from-well-differentiated-neuroendocrine-tumour-and-poorly-differentiated-adenocarcinomas
#6
Ji Hee Kang, Se Hyung Kim, Joon Koo Han
OBJECTIVE: The differentiation of poorly-differentiated neuroendocrine tumours (PD-NETs), well-differentiated NETs (WD-NETs), and adenocarcinomas (ADCs) is important due to different management options and prognoses. This study is to find the differential CT features of colorectal PD-NETs from WD-NETs and ADCs. MATERIALS AND METHODS: CT features of 25 colorectal WD-NETs, 36 PD-NETs, and 36 ADCs were retrospectively reviewed. Significant variables were assessed using univariate and multivariate analyses...
February 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28207940/structural-and-functional-changes-to-lymph-nodes-in-ageing-mice
#7
Vivian M Turner, Neil A Mabbott
Lymph nodes (LN) are secondary lymphoid organs spread throughout the lymphatic system. They function to filter pathogenic material from the lymphatic fluid to maintain the health of the organism. Subcapsular sinus macrophages (SCSM) are amongst the first-responders within the LN due to their strategic location within the subcapsular sinus region. These macrophages aid the delivery of immune complexes to B cells and follicular dendritic cells (FDC) within the LN. Here we show an increase in SCSM and other macrophage populations within aged LN...
February 16, 2017: Immunology
https://www.readbyqxmd.com/read/28207613/vagal-regulation-of-cardiac-function-in-early-childhood-and-cardiovascular-risk-in-adolescence
#8
Meghan J Gangel, Lilly Shanahan, Jacek Kolacz, James A Janssen, Ashley Brown, Susan D Calkins, Susan P Keane, Laurie Wideman
OBJECTIVE: Poor behavioral self-regulation in the first two decades of life has been identified as an important precursor of disease risk in adulthood. However, physiological regulation has not been well-studied as a disease risk factor before adulthood. We tested whether physiological regulation at age two, in the form of vagal regulation of cardiac function (indexed by RSA change), would predict three indicators of cardiovascular risk at age 16 (diastolic and systolic blood pressure and body mass index)...
February 15, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28207556/clinicopathological-characteristics-of-patients-who-underwent-additional-gastrectomy-after-incomplete-endoscopic-resection-for-early-gastric-cancer
#9
Jae Jin Hwang, Dong Ho Lee, Hyuk Yoon, Cheol Min Shin, Young Soo Park, Nayoung Kim
To evaluate the clinicopathological characteristics and factors that lead to residual tumors in patients who underwent additional gastrectomy for incomplete endoscopic resection (ER) for early gastric cancer (EGC).Between 2003 and 2013, the medical records of patients underwent additional gastrectomy after incomplete ER were retrospectively reviewed. Those diagnosed with the presence of histologic residual tumor in specimens obtained by gastrectomy were assigned to the residual tumor (RT) group (n = 47); those diagnosed with the absence of histologic residual tumor were assigned to the nonresidual tumor (NRT) group (n = 33)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28207243/analysis-of-lanthanide-radical-magnetic-interactions-in-ce-iii-2-2-bipyridyl-complexes
#10
Fabrizio Ortu, Jingjing Liu, Matthew Burton, Jonathan M Fowler, Alasdair Formanuik, Marie-Emmanuelle Boulon, Nicholas F Chilton, David P Mills
A series of lanthanide complexes bearing organic radical ligands, [Ln(Cp(R))2(bipy·(-))] [Ln = La, Cp(R) = Cp(tt) (1); Ln = Ce, Cp(R) = Cp(tt) (2); Ln = Ce, Cp(R) = Cp″ (3); Ln = Ce, Cp(R) = Cp‴ (4)] [Cp(tt) = {C5H3(t)Bu2-1,3}(-); Cp″ = {C5H3(SiMe3)2-1,3}(-); Cp‴ = {C5H2(SiMe3)3-1,2,4}(-); bipy = 2,2'-bipyridyl], were prepared by reduction of [Ln(Cp(R))2(μ-I)]2 or [Ce(Cp‴)2(I) (THF)] with KC8 in the presence of bipy (THF = tetrahydrofuran). Complexes 1-4 were thoroughly characterized by structural, spectroscopic, and computational methods, together with magnetism and cyclic voltammetry, to define an unambiguous Ln(III)/bipy·(-) radical formulation...
February 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28207021/lmct-facilitated-room-temperature-phosphorescence-and-energy-transfer-in-substituted-thiophenolates-of-gd-and-yb
#11
Vasily A Ilichev, Anton V Rozhkov, Roman V Rumyantcev, Georgy K Fukin, Ivan D Grishin, Artem V Dmitriev, Dmitry A Lypenko, Eugeny I Maltsev, Artem N Yablonskiy, Boris A Andreev, Mikhail N Bochkarev
To obtain luminescent lanthanide complexes with a low energy LMCT state the 2-(2'-mercaptophenyl)benzothiazolates, Ln(SSN)3, and 2-(2'-mercaptophenyl)benzoxazolates, Ln2(OSN)6 (Ln = Gd, Yb), were synthesized by the reaction of amides Ln[N(SiMe3)2]3 with respective thiophenols. Ytterbium complexes were structurally characterized by X-ray diffraction analysis. Cyclic voltammetry revealed that the deprotonated mercaptophenyl ligands have significantly lower oxidation potentials than their phenoxy analogues and some β-diketones...
February 16, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28205365/paratesticular-rhabdomyosarcoma-in-children-and-adolescents-outcome-and-patterns-of-relapse-when-utilizing-a-nonsurgical-strategy-for-lymph-node-staging-report-from-the-international-society-of-paediatric-oncology-siop-malignant-mesenchymal-tumour-89-and-95
#12
Timothy Rogers, Veronique Minard-Colin, Nathalie Cozic, Meriel Jenney, Johannes H M Merks, Soledad Gallego, Christine Devalck, Mark N Gaze, Anna Kelsey, Odile Oberlin, Mike Stevens, Richard D Spicer, Christophe Bergeron, Helene Martelli
PURPOSE: To report the results from International Society of Pediatric Oncology (SIOP) Malignant Mesenchymal Tumors studies (MMT 89 and 95) of males with nonmetastatic paratesticular rhabdomyosarcoma. METHODS: From 1989 to 2003, 159 patients were included. Radical inguinal orchidectomy was recommended, but retroperitoneal lymph node (LN) assessment was based on imaging alone. The treatment was stratified by stage (SIOP tumor-node-metastasis staging system) and histology...
February 16, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28203207/morphotype-dependent-flow-characteristics-in-bicuspid-aortic-valve-ascending-aortas-a-benchtop-particle-image-velocimetry-study
#13
Andrew McNally, Ashish Madan, Philippe Sucosky
The bicuspid aortic valve (BAV) is a major risk factor for secondary aortopathy such as aortic dilation. The heterogeneous BAV morphotypes [left-right-coronary cusp fusion (LR), right-non-coronary cusp fusion (RN), and left-non-coronary cusp fusion (LN)] are associated with different dilation patterns, suggesting a role for hemodynamics in BAV aortopathogenesis. However, assessment of this theory is still hampered by the limited knowledge of the hemodynamic abnormalities generated by the distinct BAV morphotypes...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28202851/expression-of-inorganic-pyrophosphatase-ppa1-correlates-with-poor-prognosis-of-epithelial-ovarian-cancer
#14
Hui Li, Ning Xiao, Zongpeng Li, Qin Wang
Ovarian serous carcinoma (OSC) is the most common epithelial ovarian cancer. Inorganic pyrophosphatase (PPA1) catalyzes the hydrolysis of pyrophosphate to inorganic phosphate, thereby providing extra energy for metabolism. The significance of PPA1 in the prognosis of OSC has not been investigated. Our study aimed to explore the expression and predictive role of PPA1 in OSC progression. We screened the expression of PPA1 protein in OSC tissues from 139 patients by immunohistochemistry, and evaluated its correlation with clinicopathological characteristics...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28202459/il-4-cxcl12-loop-is-a-key-regulator-of-lymphoid-stroma-function-in-follicular-lymphoma
#15
Shubham Pandey, Frédéric Mourcin, Tony Marchand, Saba Nayar, Marion Guirriec, Céline Pangault, Céline Monvoisin, Patricia Amé-Thomas, Fabien Guilloton, Joelle Dulong, Mark Coles, Thierry Fest, Anja Mottok, Francesca Barone, Karin Tarte
Follicular lymphoma (FL) is the most frequent indolent lymphoma and is characterized by the accumulation of germinal center-derived malignant B cells engaged in a bidirectional crosstalk with their supportive microenvironment in invaded lymph nodes (LN) and bone marrow (BM). T follicular helper cells (TFH) and infiltrating stromal cells have been shown to favor FL B-cell growth but the mechanisms of their protumoral effect and how LN/BM microenvironment is converted into a lymphoma-permissive cell niche remain poorly understood...
February 15, 2017: Blood
https://www.readbyqxmd.com/read/28199747/outcomes-in-patients-with-early-stage-breast-cancer-who-underwent-a-21-gene-expression-assay
#16
Carlos H Barcenas, Akshara Raghavendra, Arup K Sinha, Masood Pasha Syed, Limin Hsu, Modesto G Patangan, Mariana Chavez-MacGregor, Yu Shen, Gabriel H Hortobagyi, Vicente Valero, Sharon H Giordano, Naoto T Ueno, Debu Tripathy
BACKGROUND: Invasive disease-free survival (IDFS) rates are excellent in patients with breast cancer (BC) with hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-), axillary lymph node-negative (LN-) tumors with a 21-gene expression assay recurrence score (RS) of 0 to 10. However, to the authors' knowledge, the outcomes among patients with an RS of 11 to 25 who are treated with endocrine therapy alone are unknown. METHODS: In this retrospective single-institution study, the authors described the characteristics of patients with HR+, HER2-, LN- BC who underwent a 21-gene expression assay...
February 15, 2017: Cancer
https://www.readbyqxmd.com/read/28199399/mirna-148a-serves-as-a-prognostic-factor-and-suppresses-migration-and-invasion-through-wnt1-in-non-small-cell-lung-cancer
#17
Yong Chen, Lingfeng Min, Chuanli Ren, Xingxiang Xu, Jianqi Yang, Xinchen Sun, Tao Wang, Fang Wang, Changjiang Sun, Xizhi Zhang
Lung cancer is the leading cause of cancer death in the world, and aberrant expression of miRNA is a common feature during the cancer initiation and development. Our previous study showed that levels of miRNA-148a assessed by quantitative real-time polymerase chain reaction (qRT-PCR) were a good prognosis factor for non-small cell lung cancer (NSCLC) patients. In this study, we used high-throughput formalin-fixed and paraffin-embedded (FFPE) lung cancer tissue arrays and in situ hybridization (ISH) to determine the clinical significances of miRNA-148a and aimed to find novel target of miRNA-148a in lung cancer...
2017: PloS One
https://www.readbyqxmd.com/read/28199370/extra-nodal-extension-is-a-significant-prognostic-factor-in-lymph-node-positive-breast-cancer
#18
Sura Aziz, Elisabeth Wik, Gøril Knutsvik, Tor Audun Klingen, Ying Chen, Benedicte Davidsen, Hans Aas, Turid Aas, Lars A Akslen
Presence of lymph node (LN) metastasis is a strong prognostic factor in breast cancer, whereas the importance of extra-nodal extension and other nodal tumor features have not yet been fully recognized. Here, we examined microscopic features of lymph node metastases and their prognostic value in a population-based cohort of node positive breast cancer (n = 218), as part of the prospective Norwegian Breast Cancer Screening Program NBCSP (1996-2009). Sections were reviewed for the largest metastatic tumor diameter (TD-MET), nodal afferent and efferent vascular invasion (AVI and EVI), extra-nodal extension (ENE), number of ENE foci, as well as circumferential (CD-ENE) and perpendicular (PD-ENE) diameter of extra-nodal growth...
2017: PloS One
https://www.readbyqxmd.com/read/28199086/crystal-growth-and-structure-analysis-of-ce18w10o57-a-complex-oxide-containing-tungsten-in-an-unusual-trigonal-prismatic-coordination-environment
#19
Dileka Abeysinghe, Mark D Smith, Jeongho Yeon, T Thao Tran, Robert Paria Sena, Joke Hadermann, P Shiv Halasyamani, Hans-Conrad Zur Loye
The noncentrosymmetric tungstate oxide, Ce18W10O57, was synthesized for the first time as high-quality single crystals via the molten chloride flux method and structurally characterized by single-crystal X-ray diffraction. The compound is a structural analogue to the previously reported La18W10O57, which crystallizes in the hexagonal space group P6̅2c. The +3 oxidation state of cerium in Ce18W10O57 was achieved via the in situ reduction of Ce(IV) to Ce(III) using Zn metal. The structure consists of both isolated and face-shared WO6 octahedra and, surprisingly, isolated WO6 trigonal prisms...
February 15, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28199085/interactions-of-bis-2-4-4-trimethylpentyl-dithiophosphinate-with-trivalent-lanthanides-in-a-homogeneous-medium-thermodynamics-and-coordination-modes
#20
Chao Xu, Taoxiang Sun, Linfeng Rao
Complexation of trivalent lanthanides with a sulfur-bearing ligand, bis(2,4,4-trimethylpentyl) dithiophosphinate, was studied in ethanol under identical conditions by optical spectroscopy, microcalorimetry, luminescence lifetime measurement, and extended X-ray absorption fine structure (EXAFS). Three successive complexes, LnL(2+), LnL2(+), and LnL3, where Ln and L denote the trivalent lanthanide and the dithiophosphinate ligand, respectively, formed in the solution. In contrast to the general findings that heavier lanthanides form stronger complexes due to the lanthanide contraction effect, the complexation strength between Ln(III) and dithiophosphinate first increases from La(III) to Nd(III) and then decreases gradually toward heavier Ln(III) across the lanthanide series...
February 15, 2017: Inorganic Chemistry
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