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" no prazo de Papéis
Cinzia Spagnul et al.
Journal of inorganic biochemistry, 122, 57-65 (2013-03-12)
The synthesis and characterization of two novel water soluble porphyrins with three meso pyridyl rings and one peripheral chelator - either a diethylenetriamine unit (4) or a bipyridyl fragment (8) - for binding to the {(99m)Tc(CO)3}(+) moiety is reported. In
Sergey S Lobanov et al.
Scientific reports, 5, 13582-13582 (2015-09-02)
Rocky planets are thought to comprise compounds of Mg and O as these are among the most abundant elements, but knowledge of their stable phases may be incomplete. MgO is known to be remarkably stable to very high pressure and
Wan-Yu Lin et al.
Nuclear medicine and biology, 40(3), 437-441 (2013-01-29)
In patients with unresectable HCC, transcatheter arterial chemoembolization (TACE) is a widely used treatment. Recently, as an alternative treatment modality for HCC, transcatheter arterial embolization with radioisotopes has been investigated. In this study, we compared the therapeutic efficacy of an
Francesco Tisato et al.
Mass spectrometry reviews, 23(5), 309-332 (2004-07-21)
Diagnostic nuclear medicine (NM) is among the imaging procedures (together with X-ray, computerized tomography, magnetic resonance, and echography) the clinicians can routinely adopt to image organs or tissues and related disorders. (99m)Tc-based agents are the radiopharmaceuticals of election in diagnostic
Pierina Visciano et al.
Journal of food protection, 78(9), 1719-1728 (2015-09-01)
Concentrations of pollutants with regulatory limits were determined in specimens of Chamelea gallina, a species of clam collected along the Abruzzi coastal region of the central Adriatic Sea. Nine sampling sites were selected to evaluate the distribution of contaminants in
Adam Karpiński et al.
Journal of AOAC International, 97(4), 1213-1219 (2014-08-26)
The Abraham-Carr retention time prediction model was reviewed and developed in the context of the introduction of a new stationary phase variable. The new variable consists of a binary mixture dielectric constant and a stationary phase descriptor that was derived
Daniel Can et al.
Chimia, 67(4), 267-270 (2013-08-24)
Cyclopentadienyl complexes of 99mTc became accessible via a retro Diels-Alder synthetic approach of dimerized cyclopentadiene derivatives. So far, this approach was limited to derivatives comprising a carboxylic acid group, directly conjugated to the Cp-ring, leading to complexes [(C5H5COOH)99mTc(CO)3] and [(C5H5CONH-R)99mTc(CO)3]
Sahar Hiram-Bab et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 29(5), 1890-1900 (2015-01-30)
Erythropoietin (EPO) primarily regulates red blood cell formation, and EPO serum levels are increased on hypoxic stress (e.g., anemia and altitude). In addition to anemia, recent discoveries suggest new therapeutic indications for EPO, unrelated to erythropoiesis. We investigated the skeletal
L Alejo et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 103, 43-47 (2015-06-07)
Maximum Hp(0.07) dose to the eye lens received in a year by the pediatric interventional cardiologists has been estimated. Optically stimulated luminescence dosimeters were placed on the eyes of an anthropomorphic phantom, whose position in the room simulates the most
Jan Dietrich et al.
Inorganic chemistry, 52(3), 1248-1264 (2013-01-15)
New cationic metallo ligands L1-L3 based on bis(terpyridine) ruthenium(II) complexes decorated with differently substituted 2,2'-bipyridines attached via amide groups (5-NHCO-bpy, 4-CONH-bpy, 5-CONH-bpy) were prepared. Coordination of Re(I)Cl(CO)(3) fragments to the bpy unit gives the corresponding bimetallic Ru~Re complexes 1-3. Hydrogen
Yu Lim Kim et al.
Physical chemistry chemical physics : PCCP, 17(11), 7435-7442 (2015-02-24)
We present a facile synthetic route to ruthenium dioxide (RuO2)-rhenium oxide (ReO3) electrospun composite nanofibers and their electrocatalytic responses for capacitance and H2O2 sensing. The contents of rhenium oxide of electrospun ruthenium dioxide (RuO2) were carefully controlled by an electrospinning
Martin Steinborn et al.
Dalton transactions (Cambridge, England : 2003), 42(16), 5749-5754 (2013-03-02)
Sugar phosphates provide metal-binding sites both at their sugar core and at their phosphate group(s). Mixed sugar-core-phosphate chelation has been considered as a typical bonding mode within the physiological pH range for the central metabolite D-fructose 1,6-bisphosphate. The Re(V)O(tmen) metal
Camille Boucher-Jacobs et al.
ChemSusChem, 6(4), 597-599 (2013-03-28)
Top shelf dehydration: Ammonium perrhenate catalysts combined with benzylic alcohol reductants are used for the efficient deoxydehydration of glycols to olefins. The olefin and aldehyde products can be easily separated and isolated. It is also demonstrated that the catalyst can
Jeremiah E Miller et al.
Biochimica et biophysica acta, 1655(1-3), 59-63 (2004-04-22)
Laser flash-quench methods have been used to generate tyrosine and tryptophan radicals in structurally characterized rhenium-modified Pseudomonas aeruginosa azurins. Cu(I) to "Re(II)" electron tunneling in Re(H107) azurin occurs in the microsecond range. This reaction is much faster than that studied
Edward Iller et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 75, 115-127 (2013-03-19)
The gel composites of WO3-ZrO2, WO3-TiO2, WO3-ZrO2-SiO2 at different molar ratios of oxides were synthesized. The elution profiles of the generator columns packed with gel samples activated at the Polish nuclear research reactor MARIA were studied. The best results of
Frank R Cichocki et al.
Journal of biomedical materials research. Part B, Applied biomaterials, 94(2), 493-500 (2010-06-25)
Suture needles are essential instruments for performing blood vessel anastomosis in coronary artery bypass graft (CABG) surgeries. Exceptional needle performance is needed now as never before because of the increasing prevalence of elderly patients with advanced stages of coronary disease
Kaixiong Ye et al.
BMC genetics, 16, 61-61 (2015-06-10)
HFE, a major regulator of iron (Fe) homeostasis, has been suggested to be under positive selection in both European and Asian populations. While the genetic variant under selection in Europeans (a non-synonymous mutation, C282Y) has been relatively well-studied, the adaptive
Single-agent combinatorial cancer therapy.
Jochen Stritzker et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(21), 8325-8326 (2013-05-15)
Chen Lin et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 114, 330-338 (2013-06-22)
In this paper, we report a Re(I) complex of Re(CO)3(Cl-PYO)Br, where Cl-PYO stands for 2-(4-chlorophenyl)-5-(pyridin-2-yl)-1,3,4-oxadiazole, including its synthesis, identification, molecular structure, theoretical calculation and photophysical character. Re(CO)3(Cl-PYO)Br is found to be a yellow emitter with long excited state lifetime in
F F Knapp
Cancer biotherapy & radiopharmaceuticals, 13(5), 337-349 (2000-06-14)
Rhenium-188 (188Re) is an important therapeutic radioisotope which is obtained on demand as carrier-free sodium perrhenate by saline elution of the tungsten-188/rhenium-188 generator system. With a half-life of 16.9 hours and emission of a high energy beta particle (maximal energy
Shalina C Bottorff et al.
Inorganic chemistry, 52(6), 2939-2950 (2013-03-06)
The viability of the Huisgen cycloaddition reaction for clickable radiopharmaceutical probes was explored with an alkyne-functionalized 2-[(pyridin-2-ylmethyl)amino]acetic acid (PMAA) ligand system, 3, and fac-[M(I)(OH2)3(CO)3](+) (M = Re, (99m)Tc). Two synthetic strategies, (1) click, then chelate and (2) chelate, then click
George R Helz et al.
Environmental science & technology, 47(3), 1257-1264 (2013-01-12)
Warm-season dead zones-volumes of coastal water containing too little O(2) to support macrofauna-are a growing global menace. Trace elements that are deposited in sediments in response to reducing or sulfidic conditions can provide proxy records for reconstructing dead zone evolution.
Yanfeng Jiang et al.
Journal of the American Chemical Society, 135(10), 4088-4102 (2013-02-07)
Diiodo Re(I) complexes [ReI2(NO)(PR3)2(L)] (3, L = H2O; 4 , L = H2; R = iPr a, Cy b) were prepared and found to exhibit in the presence of "hydrosilane/B(C6F5)3" co-catalytic systems excellent activities and longevities in the hydrogenation of
Fabio Zobi
Chimia, 64(4), 259-265 (2010-12-09)
Transition metal complexes of rhenium and technetium find wide application in nuclear medicine and the chemistry of these elements is still the focus of intense research efforts. For therapeutic and diagnostic applications, currently much attention is dedicated to the development
Marc Pracht et al.
Anticancer research, 33(9), 3871-3877 (2013-09-12)
Hepatocellular carcinoma is generally diagnosed at advanced stages, for which only palliative treatments are possible by intra-arterial route or by targeted therapies. Among these treatments, metabolic radiotherapy using (90)-yttrium or (188)Re and sorafenib are two options adopted in monotherapy. We
John Parnell et al.
Nature communications, 6, 6996-6996 (2015-05-20)
Trace metal data for Proterozoic marine euxinic sediments imply that the expansion of nitrogen-fixing cyanobacteria and diversification of eukaryotes were delayed while the availability of bioessential metals such as molybdenum in the ocean was limited. However, there is increasing recognition
Justyna Scheffler et al.
Nuclear medicine review. Central & Eastern Europe, 6(1), 55-57 (2003-11-06)
Radionuclide bone metastases therapy is a major achievement of nuclear medicine. Development of less radiotoxic and more effective radiopharmaceuticals is therefore a challenge for radiopharmacists and industry. This paper reviews the application of rhenium-188 HEDP as a reactor- or generator-produced
Philippe Collery et al.
Anticancer research, 34(4), 1679-1689 (2014-04-03)
We proposed a new water-soluble rhenium diseleno-ether compound (with one atom of Re and two atoms of Se) and investigated the uptake of Re into the nucleus of malignant cells in culture exposed to the compound for 48 h and
Pedro I da S Maia et al.
Dalton transactions (Cambridge, England : 2003), 42(14), 5111-5121 (2013-02-13)
Rhenium(V) complexes containing tridentate thiosemicarbazones/thiosemicarbazides (H2L1) derived from N-[N′,N′-dialkylamino(thiocarbonyl)]benzimidoyl chlorides with 4,4-dialkylthiosemicarbazides have been synthesized by ligand-exchange reactions starting from [ReOCl(L1)]. The chlorido ligand of [ReOCl(L1)] (4) is readily replaced and reactions with ammonium thiocyanate or potassium cyanide give [ReO(NCS)(L1)]
Malcolm Frier
Mini reviews in medicinal chemistry, 4(1), 61-68 (2004-02-03)
The favourable nuclear properties of copper-67 and rhenium-188 for therapeutic application are described, together with methods for the chemical synthesis of a number of derivatives. Survival from invasive bladder cancer has changed little over the past 20 years. The intravesicular
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