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Piantanida E, Boškoski I, Quero G, Gallo C, Zhang Y, Fiorillo C, Arena V, Costamagna G, Perretta S, De Cola L. Nanocomposite hyaluronic acid-based hydrogel for the treatment of esophageal fistulas. Mater Today Bio 2021; 10:100109. [PMID: 33997760 PMCID: PMC8095189 DOI: 10.1016/j.mtbio.2021.100109] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/04/2021] [Accepted: 03/09/2021] [Indexed: 02/06/2023] Open
Abstract
Fistulas are abnormal connections between two body parts that can impair the quality of life. The use of biological glues represents the least invasive procedure to fill the fistula; however, it is limited by the need of multiple injections, the persistence of infection and the failure in the treatment of high-output fistulas. We describe herein the use of an injectable nanocomposite hydrogel that is able to form in situ a tissue-mimicking matrix as an innovative material for the treatment of esophageal fistulas. Injectable hydrogels that have the dual advantage of being implantable with a minimally invasive approach and of adapting their shape to the target cavity, while the introduction of mesoporous silica nanoparticles opens the possibility of drug/biomolecules delivery. The hydrogel is based on hyaluronic acid (HA), the crosslinking process occurs at physiological conditions leading to a hydrogel made of >96% by water and with a large-pore micro-architecture. The kinetic profile of the hydrogel formation is studied as a function of HA molecular weight and concentration with the aim of designing a material that is easily injectable with an endoscopic needle, is formed in a time compatible with the surgical procedure and has final mechanical properties suitable for cell proliferation. The in vivo experiments (porcine model) on esophageal-cutaneous fistulas, showed improved healing in the animals treated with the hydrogel compared with the control group.
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Affiliation(s)
- E Piantanida
- Institut de Science et d'Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
| | - I Boškoski
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Largo Agostino Gemelli, 8 00168 Roma, Italy.,Centre for Endoscopic Research Therapeutics and Training (CERTT), Catholic University of Rome, Largo Agostino Gemelli, 1 00168, Italy
| | - G Quero
- Digestive Surgery Unit, Fondazione Policlinico Agostino Gemelli, IRCCS, Rome, Italy
| | - C Gallo
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Largo Agostino Gemelli, 8 00168 Roma, Italy.,Centre for Endoscopic Research Therapeutics and Training (CERTT), Catholic University of Rome, Largo Agostino Gemelli, 1 00168, Italy
| | - Y Zhang
- Institut de Science et d'Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
| | - C Fiorillo
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Largo Agostino Gemelli, 8 00168 Roma, Italy.,Centre for Endoscopic Research Therapeutics and Training (CERTT), Catholic University of Rome, Largo Agostino Gemelli, 1 00168, Italy
| | - V Arena
- Area of Pathology, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Istituto di Anatomia Patologica, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli, 8 00168, Rome, Italy
| | - G Costamagna
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Largo Agostino Gemelli, 8 00168 Roma, Italy.,Centre for Endoscopic Research Therapeutics and Training (CERTT), Catholic University of Rome, Largo Agostino Gemelli, 1 00168, Italy
| | - S Perretta
- IRCAD, Strasbourg 1 place del'Hȏpital, 67000 Strasbourg, France
| | - L De Cola
- Institut de Science et d'Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
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Giménez ME, Davrieux CF, Serra E, Palermo M, Houghton EJ, Alonci G, Piantanida E, Garcia Vazquez A, Lindner V, Dallemagne B, Diana M, Marescaux J, De Cola L. Application of a novel material in the inguinal region using a totally percutaneous approach in an animal model: a new potential technique? Hernia 2019; 23:1175-1185. [DOI: 10.1007/s10029-019-01999-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 06/28/2019] [Indexed: 11/24/2022]
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Zarschler K, Bachmann M, Ddungu J, De Cola L, Stephan S, Bergmann R, Singh G. Ultrasmall silicon nanoparticles as promising platform for targeted multimodal imaging. Nucl Med Biol 2019. [DOI: 10.1016/s0969-8051(19)30352-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Strabler CM, Sinn S, Pehn R, Pann J, Dutzler J, Viertl W, Prock J, Ehrmann K, Weninger A, Kopacka H, De Cola L, Brüggeller P. Stabilisation effects of phosphane ligands in the homogeneous approach of sunlight induced hydrogen production. Faraday Discuss 2017; 198:211-233. [PMID: 28267169 DOI: 10.1039/c6fd00210b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Most of the systems for photochemical hydrogen production are not stable and suffer from decomposition. With bis(bidentate) tetraphosphane ligands the stability increases enormously, up to more than 1000 h. This stability was achieved with a system containing osmium(ii) as a light harvesting antenna and palladium(ii) as a water reduction catalyst connected with a bis(bidentate) phosphane ligand in one molecule with the chemical formula [Os(bpy)2(dppcb)Pd(dppm)](PF6)4. With the help of electrochemical measurements as well as photophysical data and its single crystal X-ray structure, the electron transfer between the two active metal centres (light harvesting antenna, water reduction catalyst) was analysed. The distance between the two active metal centres was determined to be 7.396(1) Å. In a noble metal free combination of a copper based photosensitiser and a cobalt diimine-dioxime complex as water reduction catalyst a further stabilisation effect by the phosphane ligands is observed. With the help of triethylamine as a sacrificial donor in the presence of different monophosphane ligands it was possible to produce hydrogen with a turnover number of 1176. This completely novel combination is also able to produce hydrogen in a wide pH-range from pH = 7.0 to 12.5 with the maximum production at pH = 11.0. The influence of monophosphane ligands with different Tolman cone angles was investigated. Monophosphane ligands with a large Tolman cone angle (>160°) could not stabilise the intermediate of the cobalt based water reduction catalyst and so the turnover number is lower than for systems with an addition of monophosphane ligands with a Tolman cone angle smaller than 160°. The role of the monophosphane ligand during sunlight-induced hydrogen production was analysed and these results were confirmed with DFT calculations. Furthermore the crystal structures of two important Co(i) intermediates, which are the catalytic active species during the catalytic pathway, were obtained. The exchange of PPh3 with other tertiary phosphane ligands can have a major impact on the activity, depending on the coordination properties. By an exchange of monophosphane ligands with functionalised phosphane ligands (hybrid ligands) the hydrogen production was raised 2.17 times.
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Affiliation(s)
- C M Strabler
- University of Innsbruck, Institute of General, Inorganic and Theoretical Chemistry, CCB - Center of Chemistry and Biomedicine, Innrain 80-82, 6020 Innsbruck, Austria.
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Mahato RN, Lülf H, Siekman MH, Kersten SP, Bobbert PA, Jong MPD, Cola LD, Wiel WGVD. Retraction. Science 2015; 350:170. [DOI: 10.1126/science.350.6257.170-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- R. N. Mahato
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India
| | - H. Lülf
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, Strasbourg, 67000, France
| | - M. H. Siekman
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India
- NanoElectronics Group, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE, Enschede, Netherlands
| | - S. P. Kersten
- Transducers Science and Technology Group, MESA+ Institute for Nanotechnology, University of Twente, Enschede, 7500AE, Netherlands
| | - P. A. Bobbert
- Transducers Science and Technology Group, MESA+ Institute for Nanotechnology, University of Twente, Enschede, 7500AE, Netherlands
| | - M. P. de Jong
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India
| | - L. De Cola
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, Strasbourg, 67000, France
- Molecular Materials and Nanosystems, Department of Applied Physics, Eindhoven University of Technology, Eindhoven, 5600 MB, Netherlands
| | - W. G. van der Wiel
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India
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Prock J, Strabler C, Viertl W, Kopacka H, Obendorf D, Müller T, Tordin E, Salzl S, Knör G, Mauro M, De Cola L, Brüggeller P. Unusual stability of dyads during photochemical hydrogen production. Dalton Trans 2015; 44:20936-48. [DOI: 10.1039/c5dt03414k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Heterodimetallic dyads containing Os and Pd are connected by a bis(bidentate) phosphine and show an excellent stability for the water splitting application.
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Mahato RN, Lülf H, Siekman MH, Kersten SP, Bobbert PA, de Jong MP, De Cola L, van der Wiel WG. RETRACTED: Ultrahigh magnetoresistance at room temperature in molecular wires. Science 2013; 341:257-60. [PMID: 23828887 DOI: 10.1126/science.1237242] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Systems featuring large magnetoresistance (MR) at room temperature and in small magnetic fields are attractive owing to their potential for applications in magnetic field sensing and data storage. Usually, the magnetic properties of materials are exploited to achieve large MR effects. Here, we report on an exceptionally large (>2000%), room-temperature, small-field (a few millitesla) MR effect in one-dimensional, nonmagnetic systems formed by molecular wires embedded in a zeolite host crystal. This ultrahigh MR effect is ascribed to spin blockade in one-dimensional electron transport. Its generic nature offers very good perspectives to exploit the effect in a wide range of low-dimensional systems.
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Affiliation(s)
- R N Mahato
- NanoElectronics Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, Netherlands
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Veiga-Gutiérrez M, Woerdemann M, Prasetyanto E, Denz C, De Cola L. Optical-tweezers assembly-line for the construction of complex functional zeolite L structures. Adv Mater 2012; 24:5199-5198. [PMID: 22806975 DOI: 10.1002/adma.201201946] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Indexed: 06/01/2023]
Affiliation(s)
- M Veiga-Gutiérrez
- Physikalisches Institut and Center for Nanotechnologie, Heisenbergstraße 11, 48149 Münster, Germany
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Ruiz-Sanchez AJ, Montanez MI, Mayorga C, Torres MJ, Kehr NS, Vida Y, Collado D, Najera F, De Cola L, Perez-Inestrosa E. Dendrimer-Modified Solid Supports: Nanostructured Materials with Potential Drug Allergy Diagnostic Applications. Curr Med Chem 2012; 19:4942-54. [DOI: 10.2174/0929867311209024942] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 05/28/2012] [Accepted: 08/02/2012] [Indexed: 11/22/2022]
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Azzouz N, Kamena F, Laurino P, Kikkeri R, Mercier C, Cesbron-Delauw MF, Dubremetz JF, De Cola L, Seeberger PH. Toxoplasma gondii secretory proteins bind to sulfated heparin structures. Glycobiology 2012; 23:106-20. [DOI: 10.1093/glycob/cws134] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Albuquerque RQ, Kühni J, Belser P, De Cola L. On the Reversible Photoisomerization of Spiropyran-Modified Zeolite L Single Crystals. Chemphyschem 2010; 11:575-8. [DOI: 10.1002/cphc.200900860] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Welter S, Brunner K, Hofstraat JW, De Cola L. Electroluminescent device with reversible switching between red and green emission. Nature 2003; 421:54-7. [PMID: 12511951 DOI: 10.1038/nature01309] [Citation(s) in RCA: 194] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2002] [Accepted: 11/12/2002] [Indexed: 11/09/2022]
Abstract
Research on new materials for organic electroluminescence has recently focused strongly on phosphorescent emitters, with the aim of increasing the emission efficiency and stability. Here we report the fabrication of a simple electroluminescent device, based on a semiconducting polymer combined with a phosphorescent complex, that shows fully reversible voltage-dependent switching between green and red light emission. The active material is made of a polyphenylenevinylene (PPV) derivative molecularly doped with a homogeneously dispersed dinuclear ruthenium complex, which fulfils the dual roles of triplet emitter and electron transfer mediator. At forward bias (+4 V), the excited state of the ruthenium compound is populated, and the characteristic red emission of the complex is observed. On reversing the bias (-4 V), the lowest excited singlet state of the polymer host is populated, with subsequent emission of green light. The mechanism for the formation of the excited state of the PPV derivative involves the ruthenium dinuclear complex in a stepwise electron transfer process that finally leads to efficient charge recombination reaction on the polymer.
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Affiliation(s)
- S Welter
- Molecular Photonics Group, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
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Bombieri G, Benetollo F, Polo A, De Cola L, Smailes DL, Vallarino LM. Synthesis, characterization, and crystal structure of a hexaaza macrocyclic complex of lutetium(III). Inorg Chem 2002. [DOI: 10.1021/ic00228a014] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sabbatini N, De Cola L, Vallarino LM, Blasse G. Radiative and nonradiative transitions in the europium(III) hexaaza macrocyclic complex [Eu(C22H26N6)(CH3COO)](CH3COO)Cl.2H2O. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100302a011] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Benetollo F, Bombieri G, De Cola L, Polo A, Smailes DL, Vallarino LM. Six-nitrogen macrocyclic complexes of the dioxouranium(VI) and praseodymium(III) ions. Inorg Chem 2002. [DOI: 10.1021/ic00317a011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dirksen A, Zuidema E, Williams RM, De Cola L, Kauffmann C, Vögtle F, Roque A, Pina F. Photoactivity and pH Sensitivity of Methyl Orange Functionalized Poly(Propyleneamine) Dendrimers. Macromolecules 2002. [DOI: 10.1021/ma011350o] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Haider JM, Chavarot M, Weidner S, Sadler I, Williams RM, De Cola L, Pikramenou Z. Metallocyclodextrins as building blocks in noncovalent assemblies of photoactive units for the study of photoinduced intercomponent processes. Inorg Chem 2001; 40:3912-21. [PMID: 11466049 DOI: 10.1021/ic0100166] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyclodextrin cups have been employed to build supramolecular systems consisting of metal and organic photoactive/redox-active components; the photoinduced communication between redox-active units assembled in water via noncovalent interactions is established. The functionalization of a beta-cyclodextrin with a terpyridine unit, ttp-beta-CD, is achieved by protection of all but one of the hydroxyl groups by methylation and attachment of the ttp unit on the free primary hydroxyl group. The metalloreceptors [(beta-CD-ttp)Ru(ttp)][PF(6)](2), [(beta-CD-ttp)Ru(tpy)][PF(6)](2), and [Ru(beta-CD-ttp)(2)][PF(6)](2) are synthesized and fully characterized. The [(beta-CD-ttp)Ru(ttp)][PF(6)](2) metalloreceptor exhibits luminescence in water, centered at 640 nm, from the (3)MLCT state with a lifetime of 1.9 ns and a quantum yield of Phi = 4.1 x 10(-)(5). Addition of redox-active quinone guests AQS, AQC, and BQ to an aqueous solution of [(beta-CD-ttp)Ru(ttp)](2+) results in quenching of the luminescence up to 40%, 20%, and 25%, respectively. Measurement of the binding strength indicates that, in saturation conditions, 85% for AQS and 77% for AQC are bound. The luminescence quenching is attributed to an intercomponent electron transfer from the appended ruthenium center to the quinone guest inside the cavity. Control experiments demonstrate no bimolecular quenching at these conditions. A photoactive osmium metalloguest, [Os(biptpy)(tpy)][PF(6)], is designed with a biphenyl hydrophobic tail for insertion in the cyclodextrin cavity. The complex is luminescent at room temperature with an emission band maximum at 730 nm and a lifetime of 116 ns. The osmium(III) species are formed for the study of photoinduced electron transfer upon their assembly with the ruthenium cyclodextrin, [(beta-CD-ttp)Ru(ttp)](2+). Time-resolved spectroscopy studies show a short component of 10 ps, attributed to electron transfer from Ru(II) to Os(III) giving an electron transfer rate 9.5 x 10(9) s(-)(1).
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Affiliation(s)
- J M Haider
- School of Chemistry, The University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
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Collin JP, Guillerez S, Sauvage JP, Barigelletti F, Flamigni L, De Cola L, Balzani V. Photoinduced charge separation in dyads and triads containing a ruthenium(II)- or osmium(II)-bis-terpyridine photosensitizer covalently linked to electron donor and acceptor groups. Coord Chem Rev 1991. [DOI: 10.1016/0010-8545(91)84035-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bomibieri G, Benetollo F, Polo A, De Cola L, Hawkins W, Vallarino L. Synthesis, characterization, and x-ray crystal structure of tris-isothiocyanato complexes of the yttrium(III) and europium(III) ions with a six-nitrogen-donor macrocyclic ligand. Polyhedron 1989. [DOI: 10.1016/s0277-5387(00)80351-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Ricci N, Manuppella A, Laurelli T, Carlomagno G, De Cola L, Valente AM. [Neonatal colonization by Pseudomonas aeruginosa. Results of 2 1/2 years of surveillance at the Isernia Hospital]. Minerva Pediatr 1986; 38:403-7. [PMID: 3090413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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