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Desai P, Rimal R, Florea A, Gumerov RA, Santi M, Sorokina AS, Sahnoun SEM, Fischer T, Mottaghy FM, Morgenroth A, Mourran A, Potemkin II, Möller M, Singh S. Tuning the Elasticity of Nanogels Improves Their Circulation Time by Evading Immune Cells. Angew Chem Int Ed Engl 2022; 61:e202116653. [PMID: 35274425 PMCID: PMC9325431 DOI: 10.1002/anie.202116653] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Indexed: 12/22/2022]
Abstract
Peptide receptor radionuclide therapy is used to treat solid tumors by locally delivering radiation. However, due to nephro‐ and hepato‐toxicity, it is limited by its dosage. To amplify radiation damage to tumor cells, radiolabeled nanogels can be used. We show that by tuning the mechanical properties of nanogels significant enhancement in circulation half‐life of the gel could be achieved. We demonstrate why and how small changes in the mechanical properties of the nanogels influence its cellular fate. Nanogels with a storage modulus of 37 kPa were minimally phagocytosed by monocytes and macrophages compared to nanogels with 93 kPa modulus. Using PET/CT a significant difference in the blood circulation time of the nanogels was shown. Computer simulations affirmed the results and predicted the mechanism of cellular uptake of the nanogels. Altogether, this work emphasizes the important role of elasticity even for particles that are inherently soft such as nano‐ or microgels.
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Affiliation(s)
- Prachi Desai
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Rahul Rimal
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Alexandru Florea
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
- Department of Radiology and Nuclear Medicine School for Cardiovascular Diseases (CARIM) and School for Oncology (GROW) Maastricht University 6229 HX Maastricht The Netherlands
| | - Rustam A. Gumerov
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
| | - Marta Santi
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Anastasia S. Sorokina
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
| | - Sabri E. M. Sahnoun
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
| | - Thorsten Fischer
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Felix M. Mottaghy
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
- Department of Radiology and Nuclear Medicine School for Cardiovascular Diseases (CARIM) and School for Oncology (GROW) Maastricht University 6229 HX Maastricht The Netherlands
| | - Agnieszka Morgenroth
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
| | - Ahmed Mourran
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Igor I. Potemkin
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
- National Research South Ural State University Chelyabinsk 454080 Russian Federation
| | - Martin Möller
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Smriti Singh
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Max Planck Institute for Medical Research (MPImF) Jahnstrasse 29 69120 Heidelberg Germany
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Desai P, Rimal R, Florea A, Gumerov RA, Santi M, Sorokina AS, Sahnoun SEM, Fischer T, Mottaghy FM, Morgenroth A, Mourran A, Potemkin II, Möller M, Singh S. Inside Back Cover: Tuning the Elasticity of Nanogels Improves Their Circulation Time by Evading Immune Cells (Angew. Chem. Int. Ed. 20/2022). Angew Chem Int Ed Engl 2022. [DOI: 10.1002/anie.202204930] [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: 11/11/2022]
Affiliation(s)
- Prachi Desai
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Rahul Rimal
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Alexandru Florea
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
- Department of Radiology and Nuclear Medicine School for Cardiovascular Diseases (CARIM) and School for Oncology (GROW) Maastricht University 6229 HX Maastricht The Netherlands
| | - Rustam A. Gumerov
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
| | - Marta Santi
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Anastasia S. Sorokina
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
| | - Sabri E. M. Sahnoun
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
| | - Thorsten Fischer
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Felix M. Mottaghy
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
- Department of Radiology and Nuclear Medicine School for Cardiovascular Diseases (CARIM) and School for Oncology (GROW) Maastricht University 6229 HX Maastricht The Netherlands
| | - Agnieszka Morgenroth
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
| | - Ahmed Mourran
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Igor I. Potemkin
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
- National Research South Ural State University Chelyabinsk 454080 Russian Federation
| | - Martin Möller
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Smriti Singh
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Max Planck Institute for Medical Research (MPImF) Jahnstrasse 29 69120 Heidelberg Germany
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Desai P, Rimal R, Florea A, Gumerov RA, Santi M, Sorokina AS, Sahnoun SEM, Fischer T, Mottaghy FM, Morgenroth A, Mourran A, Potemkin II, Möller M, Singh S. Tuning the Elasticity of Nanogels Improves Their Circulation Time by Evading Immune Cells. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204930] [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: 11/09/2022]
Affiliation(s)
- Prachi Desai
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Rahul Rimal
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Alexandru Florea
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
- Department of Radiology and Nuclear Medicine School for Cardiovascular Diseases (CARIM) and School for Oncology (GROW) Maastricht University 6229 HX Maastricht The Netherlands
| | - Rustam A. Gumerov
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
| | - Marta Santi
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Anastasia S. Sorokina
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
| | - Sabri E. M. Sahnoun
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
| | - Thorsten Fischer
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Felix M. Mottaghy
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
- Department of Radiology and Nuclear Medicine School for Cardiovascular Diseases (CARIM) and School for Oncology (GROW) Maastricht University 6229 HX Maastricht The Netherlands
| | - Agnieszka Morgenroth
- Department of Nuclear Medicine University Hospital RWTH Aachen Pauwelstraße 30 52074 Aachen Germany
| | - Ahmed Mourran
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Igor I. Potemkin
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Physics Department Lomonosov Moscow State University Leninskie Gory 1–2 119991 Moscow Russian Federation
- National Research South Ural State University Chelyabinsk 454080 Russian Federation
| | - Martin Möller
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
| | - Smriti Singh
- DWI Leibniz Institute for Interactive Materials e.V RWTH Aachen University Forckenbeckstrasse 50 52074 Aachen Germany
- Max Planck Institute for Medical Research (MPImF) Jahnstrasse 29 69120 Heidelberg Germany
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Desai P, Rimal R, Florea A, Gumerov RA, Santi M, Sorokina AS, Sahnoun SEM, Fischer T, Mottaghy FM, Morgenroth A, Mourran A, Potemkin II, Möller M, Singh S. Tuning the Elasticity of Nanogels Improves their Circulation Time by Evading Immune Cells. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116653] [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: 11/11/2022]
Affiliation(s)
- Prachi Desai
- DWI-Leibniz-Institut für Interaktive Materialien: DWI-Leibniz-Institut fur Interaktive Materialien Macromolecular Chemistry Aachen GERMANY
| | - Rahul Rimal
- DWI-Leibniz-Institut für Interaktive Materialien: DWI-Leibniz-Institut fur Interaktive Materialien Macromolecular chemistry Aachen GERMANY
| | - Alexandru Florea
- Uniklinik RWTH Aachen: Universitatsklinikum Aachen Nuclear Medicine GERMANY
| | - Rustam A. Gumerov
- Lomonosov Moscow State University: Moskovskij gosudarstvennyj universitet imeni M V Lomonosova Physics RUSSIAN FEDERATION
| | - Marta Santi
- DWI-Leibniz-Institut für Interaktive Materialien: DWI-Leibniz-Institut fur Interaktive Materialien Macromolecular Chemistry GERMANY
| | - Anastasia S. Sorokina
- Lomonosov Moscow State University: Moskovskij gosudarstvennyj universitet imeni M V Lomonosova Physics RUSSIAN FEDERATION
| | | | - Thorsten Fischer
- DWI-Leibniz-Institut für Interaktive Materialien: DWI-Leibniz-Institut fur Interaktive Materialien Macromolecular Chemistry GERMANY
| | - Felix M. Mottaghy
- Uniklinik RWTH Aachen: Universitatsklinikum Aachen Nuclear Medicine GERMANY
| | | | - Ahmed Mourran
- DWI-Leibniz-Institut für Interaktive Materialien: DWI-Leibniz-Institut fur Interaktive Materialien Macromolecular chemistry GERMANY
| | - Igor I. Potemkin
- Lomonosov Moscow State University: Moskovskij gosudarstvennyj universitet imeni M V Lomonosova Physics RUSSIAN FEDERATION
| | - Martin Möller
- DWI-Leibniz-Institut für Interaktive Materialien: DWI-Leibniz-Institut fur Interaktive Materialien Macromolecular Chemistry GERMANY
| | - Smriti Singh
- Max-Planck-Institute for Medical Research: Max-Planck-Institut fur medizinische Forschung Cellular Biophysics Jahnstr. 29 Heidelberg GERMANY
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5
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Santi M, Saha P, Walkowiak JJ, Rubner J, Wessling M, Pich A. In-Line Characterization of the Temperature-Responsive Behavior of Surface-Bound Microgel Coatings by QCM-D: A Novel Strategy for Protein Repellence Evaluation. ACS Appl Mater Interfaces 2022; 14:10907-10916. [PMID: 35179345 DOI: 10.1021/acsami.1c21814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this work, quartz crystal microbalance with dissipation monitoring (QCM-D) was used to develop a new method to evaluate the protein repellency of microgel coatings. Compared to traditional protocols for surface analysis, QCM has the advantage of a real-time quantitative approach with high sensitivity, allowing us to describe variations of the adsorbed mass with unprecedented accuracy. To enable the detectability of the film throughout the whole operational temperature interval, a poly(N-isopropylacrylamide-co-glycidyl methacrylate) p(NIPAm-co-GMA) microgel monolayer with defined thickness and rigidity was designed. Covalent adhesion of the film to the silica surface was achieved by epoxy-thiol click chemistry and tested for repeated temperature cycles, showing substantial reproducibility. Further functionalization of microgel surfaces by grafting polyzwitterionic chains remarkably improved the protein repellence leaving the strong surface adhesion unaltered. Before and after exposure to fluorescein-tagged bovine serum albumin (FITC-BSA), the coatings showed identical responsive behavior, proving the absence of protein deposition. In nonrepellent coatings, QCM monitoring instead displayed a characteristic shift in the volume phase transition (VPT), pointing out the effect of adsorbed proteins on the swelling behavior of pNIPAm. The combination of QCM-D and UV-visible (UV-vis) was used to evaluate the effect of increasing surface coverage, enabling to distinguish between the protein deposition occurring over the coated and the uncoated portion of the sensor.
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Affiliation(s)
- Marta Santi
- DWI - Leibniz-Institute for Interactive Materials, Aachen 52074, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen 52074, Germany
| | - Pabitra Saha
- DWI - Leibniz-Institute for Interactive Materials, Aachen 52074, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen 52074, Germany
| | - Jacek Janusz Walkowiak
- DWI - Leibniz-Institute for Interactive Materials, Aachen 52074, Germany
- Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Geleen 6167 RD, the Netherlands
| | - Jens Rubner
- Chemical Process Engineering AVT.CVT, RWTH Aachen University, Aachen 52074, Germany
| | - Matthias Wessling
- DWI - Leibniz-Institute for Interactive Materials, Aachen 52074, Germany
- Chemical Process Engineering AVT.CVT, RWTH Aachen University, Aachen 52074, Germany
| | - Andrij Pich
- DWI - Leibniz-Institute for Interactive Materials, Aachen 52074, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen 52074, Germany
- Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Geleen 6167 RD, the Netherlands
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Dettin M, Roso M, Messina GML, Iucci G, Peluso V, Russo T, Zamuner A, Santi M, Milan Manani S, Zanella M, Battocchio C, Marletta G, Modesti M, Rassu M, De Cal M, Ronco C. Electrospun Chitosan Functionalized with C12, C14 or C16 Tails for Blood-Contacting Medical Devices. Gels 2022; 8:gels8020113. [PMID: 35200494 PMCID: PMC8872026 DOI: 10.3390/gels8020113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/28/2022] [Accepted: 02/09/2022] [Indexed: 02/04/2023] Open
Abstract
Medical applications stimulate the need for materials with broad potential. Chitosan, the partially deacetylated derivative of chitin, offers many interesting characteristics, such as biocompatibility and chemical derivatization possibility. In the present study, porous scaffolds composed of electrospun interwoven nanometric fibers are produced using chitosan or chitosan functionalized with aliphatic chains of twelve, fourteen or sixteen methylene groups. The scaffolds were thoroughly characterized by SEM and XPS. The length of the aliphatic tail influenced the physico-chemical and dynamic mechanical properties of the functionalized chitosan. The electrospun membranes revealed no interaction of Gram+ or Gram− bacteria, resulting in neither antibacterial nor bactericidal, but constitutively sterile. The electrospun scaffolds demonstrated the absence of cytotoxicity, inflammation response, and eryptosis. These results open the door to their application for blood purification devices, hemodialysis membranes, and vascular grafts.
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Affiliation(s)
- Monica Dettin
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy; (M.D.); (M.R.); (M.M.)
| | - Martina Roso
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy; (M.D.); (M.R.); (M.M.)
| | - Grazia M. L. Messina
- Department of Chemistry, University of Catania, Viale Andrea Doria, 6, 95125 Catania, Italy; (G.M.L.M.); (G.M.)
| | - Giovanna Iucci
- Department of Sciences, University Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy; (G.I.); (M.S.); (C.B.)
| | - Valentina Peluso
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Viale J.F. Kennedy 54−Mostra d’Oltremare PAD. 20, 80125 Naples, Italy; (V.P.); (T.R.)
| | - Teresa Russo
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Viale J.F. Kennedy 54−Mostra d’Oltremare PAD. 20, 80125 Naples, Italy; (V.P.); (T.R.)
| | - Annj Zamuner
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy; (M.D.); (M.R.); (M.M.)
- Correspondence: ; Tel.: +30-0498-275-553
| | - Marta Santi
- Department of Sciences, University Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy; (G.I.); (M.S.); (C.B.)
| | - Sabrina Milan Manani
- Department of Nephrology, Dialysis and Transplantation, International Renal Research Institute (IRRIV), AULSS8, San Bortolo Hospital, Viale Rodolfi 37, 36100 Vicenza, Italy; (S.M.M.); (M.Z.); (M.R.); (M.D.C.); (C.R.)
| | - Monica Zanella
- Department of Nephrology, Dialysis and Transplantation, International Renal Research Institute (IRRIV), AULSS8, San Bortolo Hospital, Viale Rodolfi 37, 36100 Vicenza, Italy; (S.M.M.); (M.Z.); (M.R.); (M.D.C.); (C.R.)
| | - Chiara Battocchio
- Department of Sciences, University Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy; (G.I.); (M.S.); (C.B.)
| | - Giovanni Marletta
- Department of Chemistry, University of Catania, Viale Andrea Doria, 6, 95125 Catania, Italy; (G.M.L.M.); (G.M.)
| | - Michele Modesti
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy; (M.D.); (M.R.); (M.M.)
| | - Mario Rassu
- Department of Nephrology, Dialysis and Transplantation, International Renal Research Institute (IRRIV), AULSS8, San Bortolo Hospital, Viale Rodolfi 37, 36100 Vicenza, Italy; (S.M.M.); (M.Z.); (M.R.); (M.D.C.); (C.R.)
| | - Massimo De Cal
- Department of Nephrology, Dialysis and Transplantation, International Renal Research Institute (IRRIV), AULSS8, San Bortolo Hospital, Viale Rodolfi 37, 36100 Vicenza, Italy; (S.M.M.); (M.Z.); (M.R.); (M.D.C.); (C.R.)
| | - Claudio Ronco
- Department of Nephrology, Dialysis and Transplantation, International Renal Research Institute (IRRIV), AULSS8, San Bortolo Hospital, Viale Rodolfi 37, 36100 Vicenza, Italy; (S.M.M.); (M.Z.); (M.R.); (M.D.C.); (C.R.)
- Department of Medicine (DIMED), University of Padova, Via Giustiniani 2, 35128 Padova, Italy
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Saha P, Palanisamy AR, Santi M, Ganguly R, Mondal S, Singha NK, Pich A. Thermoresponsive zwitterionic poly(phosphobetaine) microgels: Effect of
macro‐RAFT
chain length and cross‐linker molecular weight on their antifouling properties. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5214] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pabitra Saha
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Institute of Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
| | - Anand Raj Palanisamy
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Rubber Technology Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Marta Santi
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Institute of Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
| | - Ritabrata Ganguly
- Rubber Technology Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Somashree Mondal
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Department of Chemical Engineering Indian Institute of Technology Guwahati Guwahati India
| | - Nikhil K. Singha
- Rubber Technology Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Andrij Pich
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Institute of Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
- Aachen Maastricht Institute for Biobased Materials (AMIBM) Maastricht University Geleen the Netherlands
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8
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Saha P, Santi M, Emondts M, Roth H, Rahimi K, Großkurth J, Ganguly R, Wessling M, Singha NK, Pich A. Stimuli-Responsive Zwitterionic Core-Shell Microgels for Antifouling Surface Coatings. ACS Appl Mater Interfaces 2020; 12:58223-58238. [PMID: 33331763 DOI: 10.1021/acsami.0c17427] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Fouling on filtration membranes is induced by the nonspecific interactions between the membrane surface and the foulants, and effectively hinders their efficient use in various applications. Here, we established a facile method for the coating of membrane surface with a dual stimuli-responsive antifouling microgel system enriched with a high polyzwitterion content. Different poly(sulfobetaine) (PSB) zwitterionic polymers with defined molecular weights and narrow dispersities were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization and integrated onto poly(N-vinylcaprolactam) (PVCL) microgels via a controlled dosage of a cross-linker, adapting a precipitation polymerization technique to obtain a core-shell microstructure. Increasing the PSB macro-RAFT concentration resulted in a shift of both upper critical solution temperature and lower critical solution temperature toward higher temperatures. Cryogenic transmission electron microscopy at different temperatures suggested the formation of a core-shell morphology with a PVCL-rich core and a PSB-rich shell. On the other hand, the significant variations of different characteristic proton signals and reversible phase transitions of the microgel constituents were confirmed by temperature-dependent 1H NMR studies. Utilizing a quartz crystal microbalance with dissipation monitoring, we have been able to observe and quantitatively describe the antipolyelectrolyte behavior of the zwitterionic microgels. The oscillation frequency of the sensor proved to change reversibly according to the variations of the NaCl concentration, showing, in fact, the effect of the interaction between the salt and the opposite charges present in the microgel deposited on the sensor. Poly(ethersulfone) membranes, chosen as the model surface, when functionalized with zwitterionic microgel coatings, displayed protein-repelling property, stimulated by different transition temperatures, and showed even better performances at increasing NaCl concentration. These kinds of stimuli-responsive zwitterionic microgel can act as temperature-triggered drug delivery systems and as potential coating materials to prevent bioadhesion and biofouling as well.
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Affiliation(s)
- Pabitra Saha
- DWI-Leibniz-Institute for Interactive Materials, Aachen 52056, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), RWTH Aachen University, Aachen 52074, Germany
| | - Marta Santi
- DWI-Leibniz-Institute for Interactive Materials, Aachen 52056, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), RWTH Aachen University, Aachen 52074, Germany
| | - Meike Emondts
- DWI-Leibniz-Institute for Interactive Materials, Aachen 52056, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), RWTH Aachen University, Aachen 52074, Germany
| | - Hannah Roth
- DWI-Leibniz-Institute for Interactive Materials, Aachen 52056, Germany
- Chemical Process Engineering AVT.CVT, RWTH Aachen University, Aachen 52074, Germany
| | - Khosrow Rahimi
- DWI-Leibniz-Institute for Interactive Materials, Aachen 52056, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), RWTH Aachen University, Aachen 52074, Germany
| | | | - Ritabrata Ganguly
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Matthias Wessling
- DWI-Leibniz-Institute for Interactive Materials, Aachen 52056, Germany
- Chemical Process Engineering AVT.CVT, RWTH Aachen University, Aachen 52074, Germany
| | - Nikhil K Singha
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Andrij Pich
- DWI-Leibniz-Institute for Interactive Materials, Aachen 52056, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), RWTH Aachen University, Aachen 52074, Germany
- Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Maastricht 6229 GT, The Netherlands
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9
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Agostini M, Amato F, Vieri ML, Greco G, Tonazzini I, Baroncelli L, Caleo M, Vannini E, Santi M, Signore G, Cecchini M. Glial-fibrillary-acidic-protein (GFAP) biomarker detection in serum-matrix: Functionalization strategies and detection by an ultra-high-frequency surface-acoustic-wave (UHF-SAW) lab-on-chip. Biosens Bioelectron 2020; 172:112774. [PMID: 33160234 DOI: 10.1016/j.bios.2020.112774] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/06/2020] [Accepted: 10/27/2020] [Indexed: 01/16/2023]
Abstract
Glial-fibrillary-acidic-protein (GFAP) has recently drawn significant attention from the clinical environment as a promising biomarker. The pathologies which can be linked to the presence of GFAP in blood severely affect the human central nervous system. These pathologies are glioblastoma multiforme (GBM), traumatic brain injuries (TBIs), multiple sclerosis (MS), intracerebral hemorrhage (ICH), and neuromyelitis optica (NMO). Here, we develop three different detection strategies for GFAP, among the most popular in the biosensing field and never examined side by side within the experimental frame. We compare their capability of detecting GFAP in a clean-buffer and serum-matrix by using gold-coated quartz-crystal-microbalance (QCM) sensors. All the three detection strategies are based on antibodies, and each of them focuses on a key aspect of the biosensing process. The first is based on a polyethylene glycol (PEG) chain for antifouling, the second on a protein-G linker for controlling antibody-orientation, and the third on antibody-splitting and direct surface immobilization for high-surface coverage. Then, we select the best-performing protocol and validate its detection performance with an ultra-high-frequency (UHF) surface-acoustic-wave (SAW) based lab-on-chip (LoC). GFAP successful detection is demonstrated in a clean-buffer and serum-matrix at a concentration of 35 pM. This GFAP level is compatible with clinical diagnostics. This result suggests the use of our technology for the realization of a point-of-care biosensing platform for the detection of multiple brain-pathology biomarkers.
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Affiliation(s)
- M Agostini
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy; INTA srl, Intelligent Acoustics Systems, Via Nino Pisano 14, 56122, Pisa, Italy
| | - F Amato
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy
| | - M L Vieri
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy
| | - G Greco
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy
| | - I Tonazzini
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy
| | - L Baroncelli
- Institute of Neuroscience, National Research Council (CNR), via G. Moruzzi 1, 56124, Pisa, Italy; Department of Developmental Neuroscience, IRCCS Stella Maris Foundation, viale del Tirreno 331, 56128, Pisa, Italy
| | - M Caleo
- Institute of Neuroscience, National Research Council (CNR), via G. Moruzzi 1, 56124, Pisa, Italy; Department of Biomedical Sciences, University of Padua, via G. Colombo 3, 35121, Padua, Italy
| | - E Vannini
- Institute of Neuroscience, National Research Council (CNR), via G. Moruzzi 1, 56124, Pisa, Italy
| | - M Santi
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy
| | - G Signore
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy; Fondazione Pisana per la Scienza, Via Ferruccio Giovannini 13, 56017, Pisa, Italy
| | - M Cecchini
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy; INTA srl, Intelligent Acoustics Systems, Via Nino Pisano 14, 56122, Pisa, Italy.
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10
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Saha P, Santi M, Frenken M, Palanisamy AR, Ganguly R, Singha NK, Pich A. Dual-Temperature-Responsive Microgels from a Zwitterionic Functional Graft Copolymer with Superior Protein Repelling Property. ACS Macro Lett 2020; 9:895-901. [PMID: 35648523 DOI: 10.1021/acsmacrolett.0c00304] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this work, we developed a synthetic strategy to synthesize dual-temperature-responsive low surface fouling zwitterionic microgels. Statistical poly(N-vinylcaprolactam-co-glycidyl methacrylate) copolymers were synthesized by RAFT polymerization and post-modified by thiol-epoxy click reaction with thiol end-group-modified poly(sulfobetaine) macro-RAFT (PSB-SH) to obtain poly(N-vinylcaprolactam-co-glycidyl methacrylate)-graft-poly(sulfobetaine) (PVCL-co-PGMA-g-PSB) graft copolymers. Synthesized graft copolymers were cross-linked by diamine cross-linker in water-in-oil (w/o) inverse mini-emulsion to obtain zwitterionic microgels. Using this approach, we synthesized microgels with unique microstructure, high loading and uniform distribution of poly(sulfobetaine) chains, which exhibits tunable dual-volume phase transition temperatures. The microgels also showed excellent antifouling property reflected in strongly reduced protein absorption on a microgel-coated surface observed in real time by a Quartz Crystal Microbalance with Dissipation (QCM-D) monitoring experiment with continuous flow of protein solution. Therefore, this kind of zwitterionic microgel can be potentially used for temperature-triggered drug delivery and anti-bioadhesion coating material as well.
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Affiliation(s)
- Pabitra Saha
- DWI − Leibniz-Institute for Interactive Materials, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Marta Santi
- DWI − Leibniz-Institute for Interactive Materials, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Martin Frenken
- DWI − Leibniz-Institute for Interactive Materials, Aachen, Germany
| | - Anand Raj Palanisamy
- DWI − Leibniz-Institute for Interactive Materials, Aachen, Germany
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, West Bengal, India
| | - Ritabrata Ganguly
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, West Bengal, India
| | - Nikhil K. Singha
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, West Bengal, India
| | - Andrij Pich
- DWI − Leibniz-Institute for Interactive Materials, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
- Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Maastricht, The Netherlands
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11
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Picarsic J, Pysher T, Zhou H, Fluchel M, Pettit T, Whitehead M, Surrey LF, Harding B, Goldstein G, Fellig Y, Weintraub M, Mobley BC, Sharples PM, Sulis ML, Diamond EL, Jaffe R, Shekdar K, Santi M. BRAF V600E mutation in Juvenile Xanthogranuloma family neoplasms of the central nervous system (CNS-JXG): a revised diagnostic algorithm to include pediatric Erdheim-Chester disease. Acta Neuropathol Commun 2019; 7:168. [PMID: 31685033 PMCID: PMC6827236 DOI: 10.1186/s40478-019-0811-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 09/14/2019] [Indexed: 02/06/2023] Open
Abstract
The family of juvenile xanthogranuloma family neoplasms (JXG) with ERK-pathway mutations are now classified within the "L" (Langerhans) group, which includes Langerhans cell histiocytosis (LCH) and Erdheim Chester disease (ECD). Although the BRAF V600E mutation constitutes the majority of molecular alterations in ECD and LCH, only three reported JXG neoplasms, all in male pediatric patients with localized central nervous system (CNS) involvement, are known to harbor the BRAF mutation. This retrospective case series seeks to redefine the clinicopathologic spectrum of pediatric CNS-JXG family neoplasms in the post-BRAF era, with a revised diagnostic algorithm to include pediatric ECD. Twenty-two CNS-JXG family lesions were retrieved from consult files with 64% (n = 14) having informative BRAF V600E mutational testing (molecular and/or VE1 immunohistochemistry). Of these, 71% (n = 10) were pediatric cases (≤18 years) and half (n = 5) harbored the BRAF V600E mutation. As compared to the BRAF wild-type cohort (WT), the BRAF V600E cohort had a similar mean age at diagnosis [BRAF V600E: 7 years (3-12 y), vs. WT: 7.6 years (1-18 y)] but demonstrated a stronger male/female ratio (BRAF V600E: 4 vs WT: 0.67), and had both more multifocal CNS disease ( BRAFV600E: 80% vs WT: 20%) and systemic disease (BRAF V600E: 40% vs WT: none). Radiographic features of CNS-JXG varied but typically included enhancing CNS mass lesion(s) with associated white matter changes in a subset of BRAF V600E neoplasms. After clinical-radiographic correlation, pediatric ECD was diagnosed in the BRAF V600E cohort. Treatment options varied, including surgical resection, chemotherapy, and targeted therapy with BRAF-inhibitor dabrafenib in one mutated case. BRAF V600E CNS-JXG neoplasms appear associated with male gender and aggressive disease presentation including pediatric ECD. We propose a revised diagnostic algorithm for CNS-JXG that includes an initial morphologic diagnosis with a final integrated diagnosis after clinical-radiographic and molecular correlation, in order to identify cases of pediatric ECD. Future studies with long-term follow-up are required to determine if pediatric BRAF V600E positive CNS-JXG neoplasms are a distinct entity in the L-group histiocytosis category or represent an expanded pediatric spectrum of ECD.
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Affiliation(s)
- J Picarsic
- Department of Pathology, University of Pittsburgh School of Medicine, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA.
| | - T Pysher
- Department of Pathology, University of Utah, Primary Children's Hospital, Salt Lake City, UT, USA
| | - H Zhou
- Department of Pathology, University of Utah, Primary Children's Hospital, Salt Lake City, UT, USA
| | - M Fluchel
- Department of Pediatric Hematology-Oncology, University of Utah, Primary Children's Hospital, Salt Lake City, UT, USA
| | - T Pettit
- Children's Hematology Oncology Centre, Christchurch Hospital, Christchurch, New Zealand
| | - M Whitehead
- Department of Pathology, Christchurch Hospital, Christchurch, New Zealand
| | - L F Surrey
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - B Harding
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - G Goldstein
- Department of Pediatric Hematology-Oncology, Hadassah University Hospital, Jerusalem, Israel
| | - Y Fellig
- Department of Pathology, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - M Weintraub
- Acquired Brain Injury Service, Alyn Pediatric and Adolescent Rehabilitation Hospital, Jerusalem, Israel
| | - B C Mobley
- Department of Pathology, Vanderbilt Hospital, Nashville, USA
| | - P M Sharples
- Department of Pediatric Neurology, Bristol Royal Hospital for Children, Bristol, England
| | - M L Sulis
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York City, USA
| | - E L Diamond
- Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - R Jaffe
- Department of Pathology, University of Pittsburgh School of Medicine, UPMC Magee Women's Hospital, Pittsburgh, PA, USA
| | - K Shekdar
- Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - M Santi
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
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12
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Battocchio C, Concolato S, De Santis S, Fahlman M, Iucci G, Santi M, Sotgiu G, Orsini M. Chitosan functionalization of titanium and Ti6Al4V alloy with chloroacetic acid as linker agent. Mater Sci Eng C Mater Biol Appl 2019; 99:1133-1140. [PMID: 30889647 DOI: 10.1016/j.msec.2019.02.052] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 01/25/2019] [Accepted: 02/15/2019] [Indexed: 12/17/2022]
Abstract
In this work, a new covalent grafting of chitosan on titanium and Ti6Al4V alloy surfaces is reported using chloroacetic acid as linker agent. Good results were obtained both on titanium and on Ti6Al4V alloy. The effect of the surface acid pretreatments on the subsequent functionalization with chitosan is evaluated. The morphological aspect of acid etched metal surfaces before chitosan grafting has been characterized by scanning electron microscopy (SEM). The presence of carboxylic groups on metal surfaces and then the efficiency of chitosan covalent immobilization were detected by Fourier transformed infrared-Attenuated Total Reflectance (FTIR-ATR) and X-Ray photoelectron spectroscopy (XPS). Cyclic voltammetry tests, using the functionalized titanium and Ti6Al4V samples as electrodes, were conducted in different aqueous solutions, to detect the presence of the homogeneous overlayer of chitosan on the surface, and to evaluate the importance of the carboxyl groups as linker agent.
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Affiliation(s)
- Chiara Battocchio
- Department of Science, Roma Tre University, Via della Vasca navale 79, Roma, Italy
| | - Sofia Concolato
- Department of Engineering, Roma Tre University, via Vito Volterra 62, Roma, Italy
| | - Serena De Santis
- Department of Engineering, Roma Tre University, via Vito Volterra 62, Roma, Italy
| | - Mats Fahlman
- Division of Surface Physics and Chemistry, IFM, Linkoping University, Linkoping, Sweden
| | - Giovanna Iucci
- Department of Science, Roma Tre University, Via della Vasca navale 79, Roma, Italy
| | - Marta Santi
- Department of Science, Roma Tre University, Via della Vasca navale 79, Roma, Italy
| | - Giovanni Sotgiu
- Department of Engineering, Roma Tre University, via Vito Volterra 62, Roma, Italy
| | - Monica Orsini
- Department of Engineering, Roma Tre University, via Vito Volterra 62, Roma, Italy.
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13
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López GY, Perry A, Harding B, Li M, Santi M. CDKN2A/B Loss Is Associated with Anaplastic Transformation in a Case of NTRK2 Fusion-positive Pilocytic Astrocytoma. Neuropathol Appl Neurobiol 2018; 45:174-178. [PMID: 29804288 DOI: 10.1111/nan.12503] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 05/24/2018] [Indexed: 01/08/2023]
Affiliation(s)
- G Y López
- University of California, San Francisco, CA, USA
| | - A Perry
- University of California, San Francisco, CA, USA
| | - B Harding
- Department of Pathology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - M Li
- Department of Pathology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - M Santi
- Department of Pathology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
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14
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Franchi S, Secchi V, Santi M, Dettin M, Zamuner A, Battocchio C, Iucci G. Biofunctionalization of TiO 2 surfaces with self-assembling oligopeptides in different pH and Ionic Strength conditions: Charge effects and molecular organization. Mater Sci Eng C Mater Biol Appl 2018; 90:651-656. [PMID: 29853135 DOI: 10.1016/j.msec.2018.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 04/15/2018] [Accepted: 05/02/2018] [Indexed: 11/26/2022]
Abstract
Self-assembling peptides (SAPs) were investigated by means of XPS and Angular Dependent NEXAFS spectroscopies, with the aim to probe the influence of pH and Ionic Strength conditions on the chemical structure and molecular organization of SAPs anchored on titania surfaces. XPS at the C1s, N1s, O1s core levels allowed to study surfaces and biomolecule/substrate interfaces. NEXAFS data allowed ascertaining that SAPs molecular structure is preserved upon grafting to the titania surface. Angular Dependent NEXAFS was used to investigate the influence of environmental conditions on the molecular organization behaviour. The objective of our study was to establish a set of methodologies for obtaining arrangements of well-organized biomolecules on scaffolds surfaces as a basic technology to develop and optimize cells adhesion and proliferation for tissue engineering applications.
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Affiliation(s)
- S Franchi
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy
| | - V Secchi
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy.
| | - M Santi
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy
| | - M Dettin
- Department of Chemical Process Engineering, University of Padova, via Marzolo 9, 35131 Padova, Italy
| | - A Zamuner
- Department of Chemical Process Engineering, University of Padova, via Marzolo 9, 35131 Padova, Italy
| | - C Battocchio
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy
| | - G Iucci
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy
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15
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Barth PG, Aronica E, Fox S, Fluiter K, Weterman MAJ, Poretti A, Miller DC, Boltshauser E, Harding B, Santi M, Baas F. Deregulated expression of EZH2 in congenital brainstem disconnection. Neuropathol Appl Neurobiol 2018; 43:358-365. [PMID: 27886392 DOI: 10.1111/nan.12368] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 11/07/2016] [Accepted: 11/25/2016] [Indexed: 12/17/2022]
Affiliation(s)
- P G Barth
- Department of Pediatric Neurology, Emma Children's Hospital/Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.,Department of (Neuro) Pathology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - E Aronica
- Department of (Neuro) Pathology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - S Fox
- Department of Medical Genetics, McGill University Health Centre, Montreal, QC, Canada
| | - K Fluiter
- Department of Genome Analysis Clinical Genetics, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - M A J Weterman
- Department of Genome Analysis Clinical Genetics, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - A Poretti
- Section of Pediatric Neuroradiology, Division of Pediatric Radiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - D C Miller
- Department of Pathology and Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO, USA
| | - E Boltshauser
- Department of Pediatric Neurology, University Children's Hospital, Zurich, Switzerland
| | - B Harding
- Departments of Pathology and Lab Medicine (Neuropathology), Children's Hospital of Philadelphia and the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - M Santi
- Departments of Pathology and Lab Medicine (Neuropathology), Children's Hospital of Philadelphia and the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - F Baas
- Department of Genome Analysis Clinical Genetics, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
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16
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Abstract
Circadian regulation of hepatic detoxification seems to be amongst the key roles of the biological clock. The liver is the major site for biotransformation, and in mammals, it contains several clock-controlled transcription factors such as proline and acidic amino acid-rich basic leucine zipper proteins (PAR bZIP) and basic-helix-loop-helix Per-Arnt-Sim (bHLH-PAS) family that act as circadian regulators of detoxification genes. This investigation explored the existence of daily and circadian expression of transcription factors involved in detoxification, as well as the temporal profile of a set of their target genes in zebrafish liver. In our study, zebrafish were able to synchronize to a light-dark (LD) cycle and displayed a diurnal pattern of activity. In addition, the expression of clock genes presented daily and circadian rhythmicity in liver. Apart from hlfa, the expression of PAR bZIP transcription factors also displayed daily rhythms, which appeared to be both light-dependent and clock-controlled, as circadian rhythms free-ran under constant conditions (continuous darkness, DD). Under LD, tefb, dbpa and dbpb expression peaked at the end of the darkness period whereas tefa showed peak levels of expression at the onset of the photophase. In addition, these four genes exhibited circadian expression under DD, with higher expression levels at the end of the subjective night. The expression of the bHLH-PAS transcription factor arh2 also showed circadian rhythmicity in zebrafish liver, peaking in the middle of the subjective night and approximately 3-4 h before peak expression of the PAR bZIP genes. Regarding the detoxification genes, the major target gene of AhR, cyp1a, showed daily and circadian expression with an acrophase 2 h after ahr2. Under LD, abcb4 also showed daily rhythmicity, with an acrophase 1-2 h after that of PAR bZIP factors during the transition between darkness and light phases, when zebrafish become active. However, the expression of six detoxification genes showed circadian rhythmicity under DD, including cyp1a and abcb4 as well as gstr1, mgst3a, abcg2 and sult2_st2. In all cases, the acrophases of these genes were found during the second half of the subjective night, in phase with the PAR bZIP transcription factors. This suggested that their expression is clock-controlled, either directly by core clock genes or through transcription factors. This study presents new data demonstrating that the process of detoxification is under circadian control in fish. Results showed that time of day should be considered when designing toxicological studies or administering drugs to fish.
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Affiliation(s)
- G Carmona-Antoñanzas
- a Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling , Stirling , UK
| | - M Santi
- a Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling , Stirling , UK.,b Life and Environmental Sciences Department , Marche Polytechnic University , Ancona , Italy
| | - H Migaud
- a Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling , Stirling , UK
| | - L M Vera
- a Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling , Stirling , UK
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17
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Santi M, Mcanulty G, Grounds M. Base excess and lactate as prognostic indicators for patients admitted to intensive care - 15 years later. Intensive Care Med Exp 2015. [PMCID: PMC4797108 DOI: 10.1186/2197-425x-3-s1-a341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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18
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Harding B, Vossough A, Goldberg E, Santi M. Pontine tegmental cap dysplasia: neuropathological confirmation of a rare clinical/radiological syndrome. Neuropathol Appl Neurobiol 2015; 42:301-6. [DOI: 10.1111/nan.12281] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/27/2015] [Accepted: 09/01/2015] [Indexed: 11/28/2022]
Affiliation(s)
- B. Harding
- Department of Pathology and Lab Medicine (Neuropathology); Children's Hospital of Philadelphia and the Perelman School of Medicine University of Pennsylvania; Philadelphia PA USA
| | - A. Vossough
- Department of Radiology; Children's Hospital of Philadelphia and the Perelman School of Medicine University of Pennsylvania; Philadelphia PA USA
| | - E. Goldberg
- Department of Neurology; Children's Hospital of Philadelphia and the Perelman School of Medicine University of Pennsylvania; Philadelphia PA USA
| | - M. Santi
- Department of Pathology and Lab Medicine (Neuropathology); Children's Hospital of Philadelphia and the Perelman School of Medicine University of Pennsylvania; Philadelphia PA USA
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19
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Venneti S, Santi M, Felicella MM, Yarilin D, Phillips J, Sullivan L, Martinez D, Perry A, Lewis P, Thompson C, Judkins A. HG-07 * DETECTION OF K27M MUTANT PEDIATRIC GLIOBLASTOMAS BY IMMUNOHISTOCHEMISTRY. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov061.44] [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: 11/13/2022] Open
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20
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Raffetto JD, Mosti G, Santi M, Ligi D, Mannello F. Matrix Metalloproteinase Profiles in Chronic Venous Ulcer Wound Fluid of Inflammatory and Granulating Venous Leg Ulcers. J Vasc Surg Venous Lymphat Disord 2014; 3:119-20. [PMID: 26993699 DOI: 10.1016/j.jvsv.2014.10.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - G Mosti
- Angiology Department, Lucca, Italy
| | - M Santi
- University "Carlo Bo" of Urbino, Urbino, Italy
| | - D Ligi
- University "Carlo Bo" of Urbino, Urbino, Italy
| | - F Mannello
- University "Carlo Bo" of Urbino, Urbino, Italy
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21
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Classen CF, William D, Linnebacher M, Farhod A, Kedr W, Elsabe B, Fadel S, Van Gool S, De Vleeschouwer S, Koks C, Garg A, Ehrhardt M, Riva M, De Vleeschouwer S, Agostinis P, Graf N, Van Gool S, Yao TW, Yoshida Y, Zhang J, Ozawa T, James D, Nicolaides T, Kebudi R, Cakir FB, Gorgun O, Agaoglu FY, Darendeliler E, Van Gool S, De Vleeschouwer S, Al-Kofide A, Al-Shail E, Khafaga Y, Al-Hindi H, Dababo M, Haq AU, Anas M, Barria MG, Siddiqui K, Hassounah M, Ayas M, van Zanten SV, Jansen M, van Vuurden D, Huisman M, Vugts D, Hoekstra O, van Dongen G, Kaspers G, Cockle J, Ilett E, Scott K, Bruning-Richardson A, Picton S, Short S, Melcher A, Benesch M, Warmuth-Metz M, von Bueren AO, Hoffmann M, Pietsch T, Kortmann RD, Eyrich M, Graf N, Rutkowski S, Fruhwald MC, Faber J, Kramm C, Porkholm M, Valanne L, Lonnqvist T, Holm S, Lannering B, Riikonen P, Wojcik D, Sehested A, Clausen N, Harila-Saari A, Schomerus E, Thorarinsdottir HK, Lahteenmaki P, Arola M, Thomassen H, Saarinen-Pihkala UM, Kivivuori SM, Buczkowicz P, Hoeman C, Rakopoulos P, Pajovic S, Morrison A, Bouffet E, Bartels U, Becher O, Hawkins C, Gould TWA, Rahman CV, Smith SJ, Barrett DA, Shakesheff KM, Grundy RG, Rahman R, Barua N, Cronin D, Gill S, Lowisl S, Hochart A, Maurage CA, Rocourt N, Vinchon M, Kerdraon O, Escande F, Grill J, Pick VK, Leblond P, Burzynski G, Janicki T, Burzynski S, Marszalek A, Ramani N, Zaky W, Kannan G, Morani A, Sandberg D, Ketonen L, Maher O, Corrales-Medina F, Meador H, Khatua S, Brassesco M, Delsin L, Roberto G, Silva C, Ana L, Rego E, Scrideli C, Umezawa K, Tone L, Kim SJ, Kim CY, Kim IA, Han JH, Choi BS, Ahn HS, Choi HS, Haque F, Rahman R, Layfield R, Grundy R, Gandola L, Pecori E, Biassoni V, Schiavello E, Chiruzzi C, Spreafico F, Modena P, Bach F, Pignoli E, Massimino M, Drogosiewicz M, Dembowska-Baginska B, Jurkiewicz E, Filipek I, Perek-Polnik M, Swieszkowska E, Perek D, Bender S, Jones DT, Warnatz HJ, Hutter B, Zichner T, Gronych J, Korshunov A, Eils R, Korbel JO, Yaspo ML, Lichter P, Pfister SM, Yadavilli S, Becher OJ, Kambhampati M, Packer RJ, Nazarian J, Lechon FC, Fowkes L, Khabra K, Martin-Retortillo LM, Marshall LV, Vaidya S, Koh DM, Leach MO, Pearson AD, Zacharoulis S, Lechon FC, Fowkes L, Khabra K, Martin-Retortillo LM, Marshall LV, Schrey D, Barone G, Vaidya S, Koh DM, Pearson AD, Zacharoulis S, Panditharatna E, Stampar M, Siu A, Gordish-Dressman H, Devaney J, Kambhampati M, Hwang EI, Packer RJ, Nazarian J, Chung AH, Mittapalli RK, Elmquist WF, Becher OJ, Castel D, Debily MA, Philippe C, Truffaux N, Taylor K, Calmon R, Boddaert N, Le Dret L, Saulnier P, Lacroix L, Mackay A, Jones C, Puget S, Sainte-Rose C, Blauwblomme T, Varlet P, Grill J, Entz-Werle N, Maugard C, Bougeard G, Nguyen A, Chenard MP, Schneider A, Gaub MP, Tsoli M, Vanniasinghe A, Luk P, Dilda P, Haber M, Hogg P, Ziegler D, Simon S, Tsoli M, Vanniasinghe A, Monje M, Gurova K, Gudkov A, Haber M, Ziegler D, Zapotocky M, Churackova M, Malinova B, Zamecnik J, Kyncl M, Tichy M, Puchmajerova A, Stary J, Sumerauer D, Boult J, Vinci M, Taylor K, Perryman L, Box G, Jury A, Popov S, Ingram W, Monje M, Eccles S, Jones C, Robinson S, Emir S, Demir HA, Bayram C, Cetindag F, Kabacam GB, Fettah A, Boult J, Li J, Vinci M, Jury A, Popov S, Jamin Y, Cummings C, Eccles S, Bamber J, Sinkus R, Jones C, Robinson S, Nandhabalan M, Bjerke L, Vinci M, Burford A, Ingram W, Mackay A, von Bueren A, Baudis M, Clarke P, Collins I, Workman P, Jones C, Taylor K, Mackay A, Vinci M, Popov S, Ingram W, Entz-Werle N, Monje M, Olaciregui N, Mora J, Carcaboso A, Bullock A, Jones C, Vinci M, Mackay A, Burford A, Taylor K, Popov S, Ingram W, Monje M, Alonso M, Olaciregui N, de Torres C, Cruz O, Mora J, Carcaboso A, Jones C, Filipek I, Drogosiewicz M, Perek-Polnik M, Swieszkowska E, Dembowska-Baginska B, Jurkiewicz E, Perek D, Nguyen A, Pencreach E, Mackay A, Moussalieh FM, Guenot D, Namer I, Chenard MP, Jones C, Entz-Werle N, Pollack I, Jakacki R, Butterfield L, Hamilton R, Panigrahy A, Potter D, Connelly A, Dibridge S, Whiteside T, Okada H, Ahsan S, Raabe E, Haffner M, Warren K, Quezado M, Ballester L, Nazarian J, Eberhart C, Rodriguez F, Ramachandran C, Nair S, Quirrin KW, Khatib Z, Escalon E, Melnick S, Classen CF, Hofmann M, Schmid I, Simon T, Maass E, Russo A, Fleischhack G, Becker M, Hauch H, Sander A, Kramm C, Grasso C, Truffaux N, Berlow N, Liu L, Debily MA, Davis L, Huang E, Woo P, Tang Y, Ponnuswami A, Chen S, Huang Y, Hutt-Cabezas M, Warren K, Dret L, Meltzer P, Mao H, Quezado M, van Vuurden D, Abraham J, Fouladi M, Svalina MN, Wang N, Hawkins C, Raabe E, Hulleman E, Li XN, Keller C, Spellman PT, Pal R, Grill J, Monje M, Jansen MHA, Sewing ACP, Lagerweij T, Vuchts DJ, van Vuurden DG, Caretti V, Wesseling P, Kaspers GJL, Hulleman E, Cohen K, Raabe E, Pearl M, Kogiso M, Zhang L, Qi L, Lindsay H, Lin F, Berg S, Li XN, Muscal J, Amayiri N, Tabori U, Campbel B, Bakry D, Aronson M, Durno C, Gallinger S, Malkin D, Qaddumi I, Musharbash A, Swaidan M, Bouffet E, Hawkins C, Al-Hussaini M, Rakopoulos P, Shandilya S, McCully C, Murphy R, Akshintala S, Cole D, Macallister RP, Cruz R, Widemann B, Warren K, Salloum R, Smith A, Glaunert M, Ramkissoon A, Peterson S, Baker S, Chow L, Sandgren J, Pfeifer S, Popova S, Alafuzoff I, de Stahl TD, Pietschmann S, Kerber MJ, Zwiener I, Henke G, Kortmann RD, Muller K, von Bueren A, Sieow NYF, Hoe RHM, Tan AM, Chan MY, Soh SY, Hawkins C, Burrell K, Chornenkyy Y, Remke M, Golbourn B, Buczkowicz P, Barzczyk M, Taylor M, Rutka J, Dirks P, Zadeh G, Agnihotri S, Hashizume R, Ihara Y, Andor N, Chen X, Lerner R, Huang X, Tom M, Solomon D, Mueller S, Petritsch C, Zhang Z, Gupta N, Waldman T, James D, Dujua A, Co J, Hernandez F, Doromal D, Hegde M, Wakefield A, Brawley V, Grada Z, Byrd T, Chow K, Krebs S, Heslop H, Gottschalk S, Yvon E, Ahmed N, Truffaux N, Philippe C, Cornilleau G, Paulsson J, Andreiuolo F, Guerrini-Rousseau L, Puget S, Geoerger B, Vassal G, Ostman A, Grill J, Parsons DW, Lin F, Trevino LR, Gao F, Shen X, Hampton O, Lindsay H, Kosigo M, Qi L, Baxter PA, Su JM, Chintagumpala M, Dauser R, Adesina A, Plon SE, Li XN, Wheeler DA, Lau CC, Pietsch T, Gielen G, Muehlen AZ, Kwiecien R, Wolff J, Kramm C, Lulla RR, Laskowski J, Goldman S, Gopalakrishnan V, Fangusaro J, Mackay A, Taylor K, Vinci M, Jones C, Kieran M, Fontebasso A, Papillon-Cavanagh S, Schwartzentruber J, Nikbakht H, Gerges N, Fiset PO, Bechet D, Faury D, De Jay N, Ramkissoon L, Corcoran A, Jones D, Sturm D, Johann P, Tomita T, Goldman S, Nagib M, Bendel A, Goumnerova L, Bowers DC, Leonard JR, Rubin JB, Alden T, DiPatri A, Browd S, Leary S, Jallo G, Cohen K, Prados MD, Banerjee A, Carret AS, Ellezam B, Crevier L, Klekner A, Bognar L, Hauser P, Garami M, Myseros J, Dong Z, Siegel PM, Gump W, Ayyanar K, Ragheb J, Khatib Z, Krieger M, Kiehna E, Robison N, Harter D, Gardner S, Handler M, Foreman N, Brahma B, MacDonald T, Malkin H, Chi S, Manley P, Bandopadhayay P, Greenspan L, Ligon A, Albrecht S, Pfister SM, Ligon KL, Majewski J, Gupta N, Jabado N, Hoeman C, Cordero F, Halvorson K, Hawkins C, Becher O, Taylor I, Hutt M, Weingart M, Price A, Nazarian J, Eberhart C, Raabe E, Kantar M, Onen S, Kamer S, Turhan T, Kitis O, Ertan Y, Cetingul N, Anacak Y, Akalin T, Ersahin Y, Mason G, Nazarian J, Ho C, Devaney J, Stampar M, Kambhampati M, Crozier F, Vezina G, Packer R, Hwang E, Gilheeney S, Millard N, DeBraganca K, Khakoo Y, Kramer K, Wolden S, Donzelli M, Fischer C, Petriccione M, Dunkel I, Afzal S, Carret AS, Fleming A, Larouche V, Zelcer S, Johnston DL, Kostova M, Mpofu C, Decarie JC, Strother D, Lafay-Cousin L, Eisenstat D, Fryer C, Hukin J, Bartels U, Bouffet E, Hsu M, Lasky J, Moore T, Liau L, Davidson T, Prins R, Fouladi M, Bartels U, Warren K, Hassal T, Baugh J, Kirkendall J, Doughman R, Leach J, Jones B, Miles L, Hawkins C, Bouffet E, Hargrave D, Grill J, Jones C, Jacques T, Savage S, Goldman S, Leary S, Packer R, Saunders D, Wesseling P, Varlet P, van Vuurden D, Wallace R, Flutter B, Morgenestern D, Hargrave D, Blanco E, Howe K, Lowdell M, Samuel E, Michalski A, Anderson J, Arakawa Y, Umeda K, Watanabe KI, Mizowaki T, Hiraoka M, Hiramatsu H, Adachi S, Kunieda T, Takagi Y, Miyamoto S, Venneti S, Santi M, Felicella MM, Sullivan LM, Dolgalev I, Martinez D, Perry A, Lewis PW, Allis DC, Thompson CB, Judkins AR. HIGH GRADE GLIOMAS AND DIPG. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou071] [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: 11/14/2022] Open
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Vaidyanathan G, Gururangan S, Bigner D, Zalutsky M, Morfouace M, Shelat A, Megan J, Freeman BB, Robinson S, Throm S, Olson JM, Li XN, Guy KR, Robinson G, Stewart C, Gajjar A, Roussel M, Sirachainan N, Pakakasama S, Anurathapan U, Hansasuta A, Dhanachai M, Khongkhatithum C, Hongeng S, Feroze A, Lee KS, Gholamin S, Wu Z, Lu B, Mitra S, Cheshier S, Northcott P, Lee C, Zichner T, Lichter P, Korbel J, Wechsler-Reya R, Pfister S, Project IPT, Li KKW, Xia T, Ma FMT, Zhang R, Zhou L, Lau KM, Ng HK, Lafay-Cousin L, Chi S, Madden J, Smith A, Wells E, Owens E, Strother D, Foreman N, Packer R, Bouffet E, Wataya T, Peacock J, Taylor MD, Ivanov D, Garnett M, Parker T, Alexander C, Meijer L, Grundy R, Gellert P, Ashford M, Walker D, Brent J, Cader FZ, Ford D, Kay A, Walsh R, Solanki G, Peet A, English M, Shalaby T, Fiaschetti G, Baulande S, Gerber N, Baumgartner M, Grotzer M, Hayase T, Kawahara Y, Yagi M, Minami T, Kanai N, Yamaguchi T, Gomi A, Morimoto A, Hill R, Kuijper S, Lindsey J, Schwalbe E, Barker K, Boult J, Williamson D, Ahmad Z, Hallsworth A, Ryan S, Poon E, Robinson S, Ruddle R, Raynaud F, Howell L, Kwok C, Joshi A, Nicholson SL, Crosier S, Wharton S, Robson K, Michalski A, Hargrave D, Jacques T, Pizer B, Bailey S, Swartling F, Petrie K, Weiss W, Chesler L, Clifford S, Kitanovski L, Prelog T, Kotnik BF, Debeljak M, Fiaschetti G, Shalaby T, Baumgartner M, Grotzer MA, Gevorgian A, Morozova E, Kazantsev I, Iukhta T, Safonova S, Kumirova E, Punanov Y, Afanasyev B, Zheludkova O, Grajkowska W, Pronicki M, Cukrowska B, Dembowska-Baginska B, Lastowska M, Murase A, Nobusawa S, Gemma Y, Yamazaki F, Masuzawa A, Uno T, Osumi T, Shioda Y, Kiyotani C, Mori T, Matsumoto K, Ogiwara H, Morota N, Hirato J, Nakazawa A, Terashima K, Fay-McClymont T, Walsh K, Mabbott D, Smith A, Wells E, Madden J, Chi S, Owens E, Strother D, Packer R, Foreman N, Bouffet E, Lafay-Cousin L, Sturm D, Northcott PA, Jones DTW, Korshunov A, Lichter P, Pfister SM, Kool M, Hooper C, Hawes S, Kees U, Gottardo N, Dallas P, Siegfried A, Bertozzi AI, Sevely A, Loukh N, Munzer C, Miquel C, Bourdeaut F, Pietsch T, Dufour C, Delisle MB, Kawauchi D, Rehg J, Finkelstein D, Zindy F, Phoenix T, Gilbertson R, Pfister S, Roussel M, Trubicka J, Borucka-Mankiewicz M, Ciara E, Chrzanowska K, Perek-Polnik M, Abramczuk-Piekutowska D, Grajkowska W, Jurkiewicz D, Luczak S, Kowalski P, Krajewska-Walasek M, Lastowska M, Sheila C, Lee S, Foster C, Manoranjan B, Pambit M, Berns R, Fotovati A, Venugopal C, O'Halloran K, Narendran A, Hawkins C, Ramaswamy V, Bouffet E, Taylor M, Singhal A, Hukin J, Rassekh R, Yip S, Northcott P, Singh S, Duhman C, Dunn S, Chen T, Rush S, Fuji H, Ishida Y, Onoe T, Kanda T, Kase Y, Yamashita H, Murayama S, Nakasu Y, Kurimoto T, Kondo A, Sakaguchi S, Fujimura J, Saito M, Arakawa T, Arai H, Shimizu T, Lastowska M, Jurkiewicz E, Daszkiewicz P, Drogosiewicz M, Trubicka J, Grajkowska W, Pronicki M, Kool M, Sturm D, Jones DTW, Hovestadt V, Buchhalter I, Jager NN, Stuetz A, Johann P, Schmidt C, Ryzhova M, Landgraf P, Hasselblatt M, Schuller U, Yaspo ML, von Deimling A, Korbel J, Eils R, Lichter P, Korshunov A, Pfister S, Modi A, Patel M, Berk M, Wang LX, Plautz G, Camara-Costa H, Resch A, Lalande C, Kieffer V, Poggi G, Kennedy C, Bull K, Calaminus G, Grill J, Doz F, Rutkowski S, Massimino M, Kortmann RD, Lannering B, Dellatolas G, Chevignard M, Lindsey J, Kawauchi D, Schwalbe E, Solecki D, McKinnon P, Olson J, Hayden J, Grundy R, Ellison D, Williamson D, Bailey S, Roussel M, Clifford S, Buss M, Remke M, Lee J, Caspary T, Taylor M, Castellino R, Lannering B, Sabel M, Gustafsson G, Fleischhack G, Benesch M, Doz F, Kortmann RD, Massimino M, Navajas A, Reddingius R, Rutkowski S, Miquel C, Delisle MB, Dufour C, Lafon D, Sevenet N, Pierron G, Delattre O, Bourdeaut F, Ecker J, Oehme I, Mazitschek R, Korshunov A, Kool M, Lodrini M, Deubzer HE, von Deimling A, Kulozik AE, Pfister SM, Witt O, Milde T, Phoenix T, Patmore D, Boulos N, Wright K, Boop S, Gilbertson R, Janicki T, Burzynski S, Burzynski G, Marszalek A, Triscott J, Green M, Foster C, Fotovati A, Berns R, O'Halloran K, Singhal A, Hukin J, Rassekh SR, Yip S, Toyota B, Dunham C, Dunn SE, Liu KW, Pei Y, Wechsler-Reya R, Genovesi L, Ji P, Davis M, Ng CG, Remke M, Taylor M, Cho YJ, Jenkins N, Copeland N, Wainwright B, Tang Y, Schubert S, Nguyen B, Masoud S, Gholamin S, Lee A, Willardson M, Bandopadhayay P, Bergthold G, Atwood S, Whitson R, Cheshier S, Qi J, Beroukhim R, Tang J, Wechsler-Reya R, Oro A, Link B, Bradner J, Cho YJ, Vallero SG, Bertin D, Basso ME, Milanaccio C, Peretta P, Cama A, Mussano A, Barra S, Morana G, Morra I, Nozza P, Fagioli F, Garre ML, Darabi A, Sanden E, Visse E, Stahl N, Siesjo P, Cho YJ, Vaka D, Schubert S, Vasquez F, Weir B, Cowley G, Keller C, Hahn W, Gibbs IC, Partap S, Yeom K, Martinez M, Vogel H, Donaldson SS, Fisher P, Perreault S, Cho YJ, Guerrini-Rousseau L, Dufour C, Pujet S, Kieffer-Renaux V, Raquin MA, Varlet P, Longaud A, Sainte-Rose C, Valteau-Couanet D, Grill J, Staal J, Lau LS, Zhang H, Ingram WJ, Cho YJ, Hathout Y, Brown K, Rood BR, Sanden E, Visse E, Stahl N, Siesjo P, Darabi A, Handler M, Hankinson T, Madden J, Kleinschmidt-Demasters BK, Foreman N, Hutter S, Northcott PA, Kool M, Pfister S, Kawauchi D, Jones DT, Kagawa N, Hirayama R, Kijima N, Chiba Y, Kinoshita M, Takano K, Eino D, Fukuya S, Yamamoto F, Nakanishi K, Hashimoto N, Hashii Y, Hara J, Taylor MD, Yoshimine T, Wang J, Guo C, Yang Q, Chen Z, Perek-Polnik M, Lastowska M, Drogosiewicz M, Dembowska-Baginska B, Grajkowska W, Filipek I, Swieszkowska E, Tarasinska M, Perek D, Kebudi R, Koc B, Gorgun O, Agaoglu FY, Wolff J, Darendeliler E, Schmidt C, Kerl K, Gronych J, Kawauchi D, Lichter P, Schuller U, Pfister S, Kool M, McGlade J, Endersby R, Hii H, Johns T, Gottardo N, Sastry J, Murphy D, Ronghe M, Cunningham C, Cowie F, Jones R, Sastry J, Calisto A, Sangra M, Mathieson C, Brown J, Phuakpet K, Larouche V, Hawkins C, Bartels U, Bouffet E, Ishida T, Hasegawa D, Miyata K, Ochi S, Saito A, Kozaki A, Yanai T, Kawasaki K, Yamamoto K, Kawamura A, Nagashima T, Akasaka Y, Soejima T, Yoshida M, Kosaka Y, Rutkowski S, von Bueren A, Goschzik T, Kortmann R, von Hoff K, Friedrich C, Muehlen AZ, Gerber N, Warmuth-Metz M, Soerensen N, Deinlein F, Benesch M, Zwiener I, Faldum A, Kuehl J, Pietsch T, KRAMER K, -Taskar NP, Zanzonico P, Humm JL, Wolden SL, Cheung NKV, Venkataraman S, Alimova I, Harris P, Birks D, Balakrishnan I, Griesinger A, Remke M, Taylor MD, Handler M, Foreman NK, Vibhakar R, Margol A, Robison N, Gnanachandran J, Hung L, Kennedy R, Vali M, Dhall G, Finlay J, Erdrich-Epstein A, Krieger M, Drissi R, Fouladi M, Gilles F, Judkins A, Sposto R, Asgharzadeh S, Peyrl A, Chocholous M, Holm S, Grillner P, Blomgren K, Azizi A, Czech T, Gustafsson B, Dieckmann K, Leiss U, Slavc I, Babelyan S, Dolgopolov I, Pimenov R, Mentkevich G, Gorelishev S, Laskov M, Friedrich C, Warmuth-Metz M, von Bueren AO, Nowak J, von Hoff K, Pietsch T, Kortmann RD, Rutkowski S, Mynarek M, von Hoff K, Muller K, Friedrich C, von Bueren AO, Gerber NU, Benesch M, Pietsch T, Warmuth-Metz M, Ottensmeier H, Kwiecien R, Faldum A, Kuehl J, Kortmann RD, Rutkowski S, Mynarek M, von Hoff K, Muller K, Friedrich C, von Bueren AO, Gerber NU, Benesch M, Pietsch T, Warmuth-Metz M, Ottensmeier H, Kwiecien R, Faldum A, Kuehl J, Kortmann RD, Rutkowski S, Yankelevich M, Laskov M, Boyarshinov V, Glekov I, Pimenov R, Ozerov S, Gorelyshev S, Popa A, Dolgopolov I, Subbotina N, Mentkevich G, Martin AM, Nirschl C, Polanczyk M, Bell R, Martinez D, Sullivan LM, Santi M, Burger PC, Taube JM, Drake CG, Pardoll DM, Lim M, Li L, Wang WG, Pu JX, Sun HD, Remke M, Taylor MD, Ruggieri R, Symons MH, Vanan MI, Bandopadhayay P, Bergthold G, Nguyen B, Schubert S, Gholamin S, Tang Y, Bolin S, Schumacher S, Zeid R, Masoud S, Yu F, Vue N, Gibson W, Paolella B, Mitra S, Cheshier S, Qi J, Liu KW, Wechsler-Reya R, Weiss W, Swartling FJ, Kieran MW, Bradner JE, Beroukhim R, Cho YJ, Maher O, Khatua S, Tarek N, Zaky W, Gupta T, Mohanty S, Kannan S, Jalali R, Kapitza E, Denkhaus D, Muhlen AZ, Rutkowski S, Pietsch T, von Hoff K, Pizer B, Dufour C, van Vuurden DG, Garami M, Massimino M, Fangusaro J, Davidson TB, da Costa MJG, Sterba J, Benesch M, Gerber NU, Mynarek M, Kwiecien R, Clifford SC, Kool M, Pietsch T, Finlay JL, Rutkowski S, Pietsch T, Schmidt R, Remke M, Korshunov A, Hovestadt V, Jones DT, Felsberg J, Goschzik T, Kool M, Northcott PA, von Hoff K, von Bueren A, Skladny H, Taylor M, Cremer F, Lichter P, Faldum A, Reifenberger G, Rutkowski S, Pfister S, Kunder R, Jalali R, Sridhar E, Moiyadi AA, Goel A, Goel N, Shirsat N, Othman R, Storer L, Korshunov A, Pfister SM, Kerr I, Coyle B, Law N, Smith ML, Greenberg M, Bouffet E, Taylor MD, Laughlin S, Malkin D, Liu F, Moxon-Emre I, Scantlebury N, Mabbott D, Nasir A, Othman R, Storer L, Onion D, Lourdusamy A, Grabowska A, Coyle B, Cai Y, Othman R, Bradshaw T, Coyle B, de Medeiros RSS, Beaugrand A, Soares S, Epelman S, Jones DTW, Hovestadt V, Wang W, Northcott PA, Kool M, Sultan M, Landgraf P, Reifenberger G, Eils R, Yaspo ML, Wechsler-Reya RJ, Korshunov A, Zapatka M, Radlwimmer B, Pfister SM, Lichter P, Alderete D, Baroni L, Lubinieki F, Auad F, Gonzalez ML, Puya W, Pacheco P, Aurtenetxe O, Gaffar A, Gros L, Cruz O, Calvo C, Navajas A, Shinojima N, Nakamura H, Kuratsu JI, Hanaford A, Eberhart C, Archer T, Tamayo P, Pomeroy S, Raabe E, De Braganca K, Gilheeney S, Khakoo Y, Kramer K, Wolden S, Dunkel I, Lulla RR, Laskowski J, Fangusaro J, Goldman S, Gopalakrishnan V, Ramaswamy V, Remke M, Shih D, Wang X, Northcott P, Faria C, Raybaud C, Tabori U, Hawkins C, Rutka J, Taylor M, Bouffet E, Jacobs S, De Vathaire F, Diallo I, Llanas D, Verez C, Diop F, Kahlouche A, Grill J, Puget S, Valteau-Couanet D, Dufour C, Ramaswamy V, Thompson E, Taylor M, Pomeroy S, Archer T, Northcott P, Tamayo P, Prince E, Amani V, Griesinger A, Foreman N, Vibhakar R, Sin-Chan P, Lu M, Kleinman C, Spence T, Picard D, Ho KC, Chan J, Hawkins C, Majewski J, Jabado N, Dirks P, Huang A, Madden JR, Foreman NK, Donson AM, Mirsky DM, Wang X, Dubuc A, Korshunov A, Ramaswamy V, Remke M, Mack S, Gendoo D, Peacock J, Luu B, Cho YJ, Eberhart C, MacDonald T, Li XN, Van Meter T, Northcott P, Croul S, Bouffet E, Pfister S, Taylor M, Laureano A, Brugmann W, Denman C, Singh H, Huls H, Moyes J, Khatua S, Sandberg D, Silla L, Cooper L, Lee D, Gopalakrishnan V. MEDULLOBLASTOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou074] [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: 11/14/2022] Open
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Adachi JI, Totake K, Shirahata M, Mishima K, Suzuki T, Yanagisawa T, Fukuoka K, Nishikawa R, Arimappamagan A, Manoj N, Mahadevan A, Bhat D, Arvinda H, Indiradevi B, Somanna S, Chandramouli B, Petterson SA, Hermansen SK, Dahlrot RH, Hansen S, Kristensen BW, Carvalho F, Jalali S, Singh S, Croul S, Aldape K, Zadeh G, Choi J, Park SH, Khang SK, Suh YL, Kim SP, Lee YS, Kim SH, Coberly S, Samayoa K, Liu Y, Kiaei P, Hill J, Patterson S, Damore M, Dahiya S, Emnett R, Phillips J, Haydon D, Leonard J, Perry A, Gutmann D, Epari S, Ahmed S, Gurav M, Raikar S, Moiyadi A, Shetty P, Gupta T, Jalali R, Georges J, Zehri A, Carlson E, Martirosyan N, Elhadi A, Nichols J, Ighaffari L, Eschbacher J, Feuerstein B, Anderson T, Preul M, Jensen K, Nakaji P, Girardi H, Monville F, Carpentier S, Giry M, Voss J, Jenkins R, Boisselier B, Frayssinet V, Poggionovo C, Catteau A, Mokhtari K, Sanson M, Peyro-Saint-Paul H, Giannini C, Hide T, Nakamura H, Makino K, Yano S, Anai S, Shinojima N, Kuroda JI, Takezaki T, Kuratsu JI, Higuchi F, Matsuda H, Iwata K, Ueki K, Kim P, Kong J, Cooper L, Wang F, Gao J, Teodoro G, Scarpace L, Mikkelsen T, Schniederjan M, Moreno C, Saltz J, Brat D, Cho U, Hong YK, Lee YS, Lober R, Lu L, Gephart MH, Fisher P, Miyazaki M, Nishihara H, Itoh T, Kato M, Fujimoto S, Kimura T, Tanino M, Tanaka S, Nguyen N, Moes G, Villano JL, Nishihara H, Kanno H, Kato Y, Tanaka S, Ohnishi T, Harada H, Ohue S, Kouno S, Inoue A, Yamashita D, Okamoto S, Nitta M, Muragaki Y, Maruyama T, Sawada T, Komori T, Saito T, Okada Y, Omay SB, Gunel JM, Clark VE, Li J, Omay EZE, Serin A, Kolb LE, Hebert RM, Bilguvar K, Ozduman K, Pamir MN, Kilic T, Baehring J, Piepmeier JM, Brennan CW, Huse J, Gutin PH, Yasuno K, Vortmeyer A, Gunel M, Perry A, Pugh S, Rogers CL, Brachman D, McMillan W, Jenrette J, Barani I, Shrieve D, Sloan A, Mehta M, Prabowo A, Iyer A, Veersema T, Anink J, Meeteren ASV, Spliet W, van Rijen P, Ferrier T, Capper D, Thom M, Aronica E, Chharchhodawala T, Sable M, Sharma MC, Sarkar C, Suri V, Singh M, Santosh V, Thota B, Srividya M, Sravani K, Shwetha S, Arivazhagan A, Thennarasu K, Chandramouli B, Hegde A, Kondaiah P, Somasundaram K, Rao M, Santosh V, Kumar VP, Thota B, Shastry A, Arivazhagan A, Thennarasu K, Kondaiah P, Shastry A, Narayan R, Thota B, Somanna S, Thennarasu K, Arivazhagan A, Santosh V, Shastry A, Naz S, Thota B, Thennarasu K, Arivazhagan A, Somanna S, Santosh V, Kondaiah P, Venneti S, Garimella M, Sullivan L, Martinez D, Huse J, Heguy A, Santi M, Thompson C, Judkins A, Voronovich Z, Chen L, Clark K, Walsh M, Mannas J, Horbinski C, Wiestler B, Capper D, Holland-Letz T, Korshunov A, von Deimling A, Pfister SM, Platten M, Weller M, Wick W, Zieman G, Dardis C, Ashby L, Eschbacher J. PATHOLOGY. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not184] [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: 11/13/2022] Open
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Santi M, Medne L, Bharucha-Goebel D, Bonnemann C, Dastgir J, Zukosky K, Shieh P, Winder T, Tennekoon G, Finkel R, Dowling J, Monnier N. P.4.9 Variable clinical and histological features in severe congenital RYR1 associated myopathy. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Alexandru D, Satyadev R, So W, Lee SH, Lee YS, Hong YK, Kang CS, Rodgers SD, Marascalchi BJ, Strom RG, Riina H, Samadani U, Frempong-Boadu A, Babu R, Sen C, Zagzag D, Anderson MD, Abel TW, Moots PL, Odia Y, Orr BA, Eberhart CG, Rodriguez F, Sweis RT, Lavingia J, Connelly J, Cochran E, van den Bent M, Hartmann C, Preusser M, Strobel T, Dubbink HJ, Kros JM, von Deimling A, Boisselier B, Sanson M, Halling KC, Diefes KL, Aldape K, Giannini C, Rodriguez FJ, Ligon AH, Horkayne-Szakaly I, Rushing EJ, Ligon KL, Vena N, Garcia DI, Douglas Cameron J, Eberhart CG, Raghunathan A, Wani K, Armstrong TS, Vera-Bolanos E, Fouladi M, Gajjar A, Goldman S, Lehman NL, Metellus P, Mikkelsen T, Necesito-Reyes MJT, Omuro A, Packer RJ, Partap S, Pollack IF, Prados MD, Ian Robbins H, Soffietti R, Wu J, Gilbert MR, Aldape KD, Prosniak M, Harshyne LA, Andrews DW, Craig Hooper D, Kagawa N, Hosen N, Kijima N, Hirayama R, Chiba Y, Yamamoto F, Kinoshita M, Hashimoto N, Fujimoto Y, Yoshimine T, Hu J, Nuno M, Patil C, Rudnick J, Phuphanich S, Bannykh S, Chu R, Yu J, Black K, Choi J, Kim D, Shim KW, Kim SH, Kanno H, Nishihara H, Tanaka S, Nishihara H, Yanagi T, Kanno H, Tanaka S, Buczkowicz P, Khuong-Quang DA, Rakopoulos P, Bouffet E, Morrison A, Bartels U, Pfister SM, Jabado N, Hawkins C, Weinberg BD, Newell KL, Kumar P, Wang F, Venneti S, Madden M, Coyne T, Phillips J, Gorovets D, Huse J, Kofler J, Lu C, Tihan T, Sullivan L, Santi M, Judkins A, Thompson C, Perry A, Iorgulescu JB, Laufer I, Hameed M, Lis E, Boland P, Komotar R, Bilsky M, Amato-Watkins AC, Neal J, Rees AD, Davies JS, Hayhurst C, Lu-Emerson C, Snuderl M, Davidson C, Kirkpatrick ND, Huang Y, Duda DG, Ancukiewicz M, Stemmer-Rachamimov A, Batchelor TT, Jain RK, Ellezam B, Theeler BJ, Sadighi ZS, Mehta V, Tran MDT, Adesina AM, Puduvalli VK, Bruner JM. CLIN-PATHOLOGY. Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos233] [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: 11/13/2022] Open
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Khatua S, Brown R, Pearlman M, Vats T, Satge D, Stiller C, Rutkowski S, von Bueren AO, Lacour B, Sommelet D, Nishi M, Massimino M, Garre ML, Moreno F, Hasle H, Jakab Z, Greenberg M, von der Weid N, Kuehni C, Zurriaga O, Vicente ML, Peris-Bonet R, Benesch M, Vekemans M, Sullivan S, Rickert C, Fisher PG, Von Behren J, Nelson DO, Reynolds P, Fukuoka K, Yanagisawa T, Suzuki T, Koga T, Wakiya K, Adachi JI, Mishima K, Fujimaki T, Matsutani M, Nishikawa R, Gidding C, Schieving J, Wesseling P, Ligtenberg M, Hoogerbrugge N, Jongmans M, Crosier S, Nicholson SL, Robson K, Jacques T, Wharton S, Bown N, Michalski A, Pizer B, Clifford S, Sanden E, Visse E, Siesjo P, Darabi A, Nousome D, Lupo PJ, Scheurer ME, Nulman I, Barrera M, Maxwell C, Koren G, Gorelyshev S, Matuev K, Lubnin A, Laskov M, Lemeneva N, Mazerkina N, Khuhlaeva E, Muller K, Bruns F, Pietsch T, Rutkowski S, Kortmann RD, Krishnatry R, Shirsat N, Kunder R, Epari S, Gupta T, Kurkure P, Vora T, Arora B, Moiyadi A, Jalali R, Swieszkowska E, Dembowska-Baginska B, Drogosiewicz M, Filipek I, Perek-Polnik M, Grajkowska W, Perek D, Johnston D, Cyr J, Strother D, Lafay-Cousin L, Fryer C, Scheinemann K, Carret AS, Fleming A, Larouche V, Bouffet E, Friedrich C, Gnekow AK, Fleischhack G, Kramm CM, Fruehwald MC, Muller HL, Calaminus G, Kordes U, Faldum A, Pietsch T, Warmuth-Metz M, Kortmann RD, Jung I, Kaatsch P, Rutkowski S, Caretti V, Bugiani M, Boor I, Schellen P, Vandertop WP, Noske DP, Kaspers G, Wurdinger T, Wesseling P, Robinson G, Chingtagumpala M, Adesina A, Dalton J, Santi M, Sievert A, Wright K, Armstrong G, Boue D, Olshefski R, Scott S, Huang A, Cohn R, Gururangan S, Bowers D, Gilbertson R, Gajjar A, Ellison D, Chick E, Donson A, Owens E, Smith AA, Madden JR, Foreman NK, Bakry D, Aronson M, Durno C, Hala R, Farah R, Amayiri N, Alharbi Q, Shamvil A, Ben-Shachar S, Constantini S, Rina D, Ellise J, Keiles S, Pollet A, Qaddoumi I, Gallinger S, Malkin D, Bouffet E, Hawkins C, Tabori U, Trivedi M, Goodden J, Chumas P, Tyagi A, O'kane R, Trivedi M, Goodden J, Chumas P, Tyagi A, O'Kane R, Crimmins D, Picton S, Elliott M. EPIDEMIOLOGY. Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos100] [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: 11/12/2022] Open
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Bertani M, Lasalvia A, Bonetto C, Tosato S, Cristofalo D, Bissoli S, De Santi K, Mazzoncini R, Lazzarotto L, Santi M, Sale A, Scalabrin D, Abate M, Tansella M, Rugger M. The influence of gender on clinical and social characteristics of patients at psychosis onset: A report from the Psychosis Incident Cohort Outcome Study (PICOS). Psychol Med 2012; 42:769-780. [PMID: 21995856 DOI: 10.1017/s0033291711001991] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND. This paper examined the hypothesis that males with first-episode psychosis (FEP) experience lower pre-morbid adjustment, greater social disability and more self-perceived needs at illness onset than females(by controlling for duration of untreated psychosis, diagnosis, age and symptoms at onset). Results disconfirming this hypothesis were thought to suggest the potentially mediating role of social context in determining the impact of symptoms and disability on the everyday lives of male patients in the early phase of psychosis. METHOD. A large epidemiologically representative cohort of FEP patients (n=517) was assessed within the Psychosis Incident Cohort Outcome Study (PICOS) framework – a multi-site research project examining incident cases of psychosis in Italy's Veneto region. RESULTS. Despite poorer pre-morbid functioning and higher social disability at illness onset, males reported fewer unmet needs in the functioning domain than females did. An analysis of help provided by informal care givers showed that males received more help from their families than females did. This finding led us to disconfirm the second part of the hypothesis and suggest that the impact of poorer social performance and unmet needs on everyday life observed in male patients might be hampered by higher tolerance and more support within the family context.CONCLUSIONS. These findings shed new light on rarely investigated sociocultural and contextual factors that may account for the observed discrepancy between social disability and needs for care in FEP patients. They also point to a need for further research on gender differences, with the ultimate aim of delivering gender-sensitive effective mental health care.
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Affiliation(s)
- M Bertani
- Department of Public Health and Community Medicine, Section of Psychiatry and Clinical Psychology, University of Verona, Verona, Italy
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Tasdemiroglu E, Kaya M, Yildirim CH, Lucas KG, Bao L, Bruggeman R, Specht C, Murray JC, Donahue DJ, Galliani CA, Blondin NA, Hui P, Vortmeyer A, Hasbani J, Baehring J, Jensen RL, Lee J, Lake WB, Baskaya MK, Salamat MS, Kennedy T, Abraham S, Jensen RL, Lusis EA, Scheithauer B, Yachnis AT, Chicoine MR, Paulus W, Perry A, Chan DT, Kam MK, Ma BB, Ng SC, Siu DY, Ng HK, Poon WS, Dunbar EM, Dong HJ, Liu C, Chi YY, Keeling C, Yachnis AT, Stephen JH, Sievert AJ, Resnick AC, Storm PB, Judkins AR, Santi M, Kirsch M, Stelling A, Koch E, Salzer R, Schackert G, Steiner G, Pollo B, Maderna E, Valletta L, Guzzetti S, Eoli M, Calatozzolo C, Nunziata R, Salmaggi A, Finocchiaro G, Kastenhuber ER, Campos C, Brennan CW, Mellinghoff IK, Huse JT, Zhang H, Sergey M, Estrada DK, Kay AB, Wagner AS, Khanlou N, Vinters HV, Cloughesy TF, Yong WH. Pathology. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s10] [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: 11/13/2022] Open
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29
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Escudero T, Gutierrez C, Colls P, Hill D, Wiemer K, Santi M. The unbelievable shrinking mosaicism problem of PGD. Fertil Steril 2010. [DOI: 10.1016/j.fertnstert.2010.07.509] [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: 11/29/2022]
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Morini M, Bettini G, Diana A, Spadari A, Casadio Tozzi A, Santi M, Romagnoli N, Scarpa F, Mandrioli L. Thymofibrolipoma in two dogs. J Comp Pathol 2009; 141:74-7. [PMID: 19426992 DOI: 10.1016/j.jcpa.2009.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Revised: 02/20/2009] [Accepted: 03/02/2009] [Indexed: 10/20/2022]
Abstract
Thymolipomas are unusual benign neoplasms composed of mature adipose and thymic tissue that represent less than 10% of all thymic tumours in man. A thymofibrolipoma is a histological variant of thymolipoma in which there is an additional abundance of fibrous connective tissue. Thymolipoma has been reported previously in one dog and one cat, but thymofibrolipoma has never been described. This report documents the clinical and pathological features of two cases of canine thymofibrolipoma.
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Affiliation(s)
- M Morini
- Department of Veterinary Public Health and Animal Pathology, Faculty of Veterinary Medicine, Alma Mater Studiorum University of Bologna, Ozzano Emilia, Italy.
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31
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Quezado M, Ronchetti R, Rapkiewicz A, Santi M, Blumenthal DT, Rushing EJ. Chromogenic in situ hybridization accurately identifies EGFR amplification in small cell glioblastoma multiforme, a common subtype of primary GBM. Clin Neuropathol 2005; 24:163-9. [PMID: 16033132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023] Open
Abstract
Primary glioblastoma multiforme (GBM) commonly overexpresses the epidermal growth factor receptor (EGFR) gene and its ligand-independent mutant, EGFRvIII. Amplification of the EGFR gene has been implicated in the pathogenesis of primary GBM, in particular the small cell phenotype, and this finding may contribute to its aggressive clinical behavior. Anti-EGFR clinical trials for GBM are being conducted, and it would be useful to identify a rapid technique to determine whether EGFR expression and the small cell phenotype are associated with a response to therapy. In the present study we examined 56 cases of GBM using chromogenic in situ hybridization (CISH). CISH analysis and morphology identified 22 small cell (SCGBM) and 22 non-small cell glioblastoma (NSCGBM), and 12 cases of a mixed phenotype. Fourteen cases of SCGBM (14/22) showed EGFR amplification, while only 5 NSCGBM (5/22) cases showed amplification. We have therefore used CISH as an efficient, economic and reliable means for routinely assessing EGFR amplification in GBM, including the small cell variant.
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Affiliation(s)
- M Quezado
- Laboratory of Pathology, National Cancer Institute/National Institutes of Health, Bethesda, MD, USA
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32
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Newton HB, Stevens C, Santi M. Brain metastases from fallopian tube carcinoma responsive to intra-arterial carboplatin and intravenous etoposide: a case report. J Neurooncol 2001; 55:179-84. [PMID: 11859973 DOI: 10.1023/a:1013811612546] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Fallopian tube carcinoma is the least common neoplasm of the female genital tract. Although rare, neurological complications such as brain metastases can develop. It remains unclear, however, what role chemotherapy has in the treatment of these patients and what route of administration is most effective. Intra-arterial (IA) regional administration of chemotherapy may increase intra-tumoral drug concentrations and improve efficacy. We report the case of a 47-year-old woman who developed bilateral fallopian tube cancer and multifocal brain metastases. After progression through radiation therapy and oral chemotherapy, she was placed on IA carboplatin (200 mg/m2/d x 2 days every 4 weeks) and intravenous etoposide (100 mg/m2/d x 2 days every 4 weeks). During treatment she had objective tumor shrinkage that has remained stable for more than 12 months. For patients with fallopian tube carcinoma that develop brain metastases and respond poorly to surgery and/or irradiation, multi-agent chemotherapy containing carboplatin should be considered. The effectiveness of carboplatin may be improved if administered by the IA route.
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Affiliation(s)
- H B Newton
- Department of Neurology, The Ohio State University Medical Center and James Cancer Hospital and Solove Research Institute, Columbus, Ohio, USA.
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Chiesa G, Stoltzfus LJ, Michelagnoli S, Bielicki JK, Santi M, Forte TM, Sirtori CR, Franceschini G, Rubin EM. Elevated triglycerides and low HDL cholesterol in transgenic mice expressing human apolipoprotein A-I(Milano). Atherosclerosis 1998; 136:139-46. [PMID: 9544740 DOI: 10.1016/s0021-9150(97)00195-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In general, plasma concentrations of high density lipoproteins (HDL) are inversely related to the incidence of coronary artery disease. One exception to this trend is individuals with apolipoprotein A-I(Milano) (apo A-IM), a molecular variant of apo A-I, which results in very low plasma apo A-I and HDL-cholesterol levels. Despite these low levels, and other lipoprotein defects, individuals with this mutation have no increased risk for cardiovascular disease. As a first step in proving why apo A-IM carriers appear to be protected from the pro-atherogenic effect of a low HDL, transgenic mice expressing apo A-IM were generated. Mice expressing either wild-type human apo A-I or apo A-IM, together with human apo A-II, were crossed into mice lacking murine apo A-I. Apo A-IM/A-II mice had lower cholesterol and HDL plasma levels compared to apo A-I/A-II mice. Moreover, as in human carriers, apo A-IM mice were characterized by elevated triglyceride plasma levels and by the presence of a population of very small HDL particles. These results indicate that the expression of apo A-IM in a mouse model reproduces the major lipid/lipoprotein abnormalities observed in human carriers. Thus, apo A-IM transgenic mice appear to be a suitable model in which to assess whether the mutation has an anti-atherogenic effect.
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Affiliation(s)
- G Chiesa
- Center E. Grossi Paoletti, Institute of Pharmacological Sciences, University of Milan, Italy
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34
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Affiliation(s)
- J A Simon
- Department of Radiology, George Washington University Medical Center, Washington, DC 20037, USA
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35
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Maltoni M, Travaglini C, Santi M, Nanni O, Scarpi E, Benvenuti S, Albertazzi L, Amaducci L, Derni S, Fabbri L, Masi A, Montanari L, Pasini G, Polselli A, Tonelli U, Turci P, Amadori D. Evaluation of the cost of home care for terminally ill cancer patients. Support Care Cancer 1997; 5:396-401. [PMID: 9322352 DOI: 10.1007/s005200050098] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [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: 02/05/2023]
Abstract
The aim of this work was to carry out a cost evaluation of the home care programme for terminally ill cancer patients run by the Istituto Oncologico Romagnolo (I.O.R.) in the areas of Forlì, Cesena, Ravenna and Rimini (Romagna, Italy). To determine effective home care direct costs, we first selected 1 week of care as an observation unit. We then proceeded to assess the medical and nursing care units together with the clinical protocols administered for each patient. The Karnofsky Performance Status (KPS) was also assessed weekly. In this way, we calculated care costs for each patient and for each week as the sum of medical costs, nursing costs, treatment costs and other costs. A consecutive series of 574 patients were involved in the study from 1 April 1994 to 31 March 1995. A total of 5164 patient-weeks of care was provided, with an average cost per week of 177.6 Ecu. This weekly cost increased in the last 100 days of life (week -15 = 179.5 Ecu; week -8 = 188.3 Ecu; week -2 = 221.0 Ecu; P < 0.001). When single components were analysed in relation to total cost (treatment protocols, physician and nursing care) the increased global cost was found to be mainly attributable to the intensification in nursing care (21.8% of costs in week -15 vs 27.3% of costs in week -2). Examination of the relation between the cost of 1 week of care and KPS values clearly shows that healthcare costs increased as KPS decreased (from 152.2 Ecu with KPS > or = 60 to 292.6 Ecu with KPS < or = 20; P < 0.001). Home care costs were also seen to vary with some clinical characteristics and symptoms present when patients entered the study: asthenia, anorexia, nausea/vomiting, bedsores. Given the good results of home care for cancer patients in terms of quality of life, this method of cost accounting for home-care providers can help to monitor the rising cost of assistance and confirm the cost effectiveness of this type of care.
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Affiliation(s)
- M Maltoni
- Divisione Oncologia Medica, Ospedale Pierantoni, Forlì, Italy
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Santi M, Sartoris DJ. Diagnostic imaging approach to stress fractures of the foot. J Foot Surg 1991; 30:85-97. [PMID: 2002193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The authors discuss the radiologic appearance of stress fractures in the foot. Plain radiographs, computerized tomograms, bone scintigraphy, and magnetic resonance imaging are illustrated. Common areas of pedal fracture including the metatarsal bones and, less frequently, the navicular, calcaneus, and other rearfoot entities are reviewed. A keen sense of suspicion by the practitioner is necessary in identifying these anomalies.
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Affiliation(s)
- M Santi
- University of California, San Diego
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Sutherland DH, Santi M, Abel MF. Treatment of stiff-knee gait in cerebral palsy: a comparison by gait analysis of distal rectus femoris transfer versus proximal rectus release. J Pediatr Orthop 1990; 10:433-41. [PMID: 2358477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Two groups of patients with cerebral palsy (CP) were studied pre- and postoperatively by gait analysis after proximal release or distal transfer of the rectus femoris for treatment of knee stiffness in swing phase. In the first group studied, 12 patients underwent proximal rectus femoris muscle release. In the second group, 10 patients underwent distal rectus femoris transfer. After surgery, peak knee flexion was increased 9.1 degrees in swing phase by proximal rectus release and 16.2 degrees by distal rectus transfer. Hip motion throughout the gait cycle was not significantly affected by either operation, and no tendency for a crouch gait was observed after either procedure.
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Affiliation(s)
- D H Sutherland
- Division of Orthopedics and Rehabilitation, University of California, San Diego
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Santi M, Sartoris DJ, Resnick D. Diagnostic imaging of tarsal and metatarsal stress fractures. Part II. Orthop Rev 1989; 18:305-10. [PMID: 2710579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
As the preoccupation with physical fitness grows in this country, the problem of "stress fracture" has become more clinically significant. Reliable techniques for imaging the musculoskeletal system have also continued to grow, allowing the clinician to better diagnose and manage this condition. However, the radiographic findings of stress fracture are sometimes difficult to interpret. This review compares plain radiography, scintigraphy, CT, and MRI in the imaging of stress fractures.
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Affiliation(s)
- M Santi
- University of California, San Diego
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39
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Santi M, Sartoris DJ, Resnick D. Diagnostic imaging of tarsal and metatarsal stress fractures. Part I. Orthop Rev 1989; 18:178-85. [PMID: 2648259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
As the preoccupation with physical fitness grows in this country, the problem of "stress fracture" has become more clinically significant. Reliable techniques for imaging the musculoskeletal system have also continued to grow, allowing the clinician to better diagnose and manage this condition. However, the radiographic findings of stress fracture are sometimes difficult to interpret. This review compares plain radiography, scintigraphy, CT, and MRI in the imaging of stress fractures.
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Affiliation(s)
- M Santi
- University of California, San Diego
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Santi M, Sartoris DJ, Resnick D. Magnetic resonance imaging in the diagnosis of metatarsal stress fracture. J Foot Surg 1988; 27:172-7. [PMID: 3372953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- M Santi
- Department of Radiology, University of California, San Diego
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Paccagnella A, Majni G, Ottaviani G, Arru P, Santi M, Vallana F. Properties of a new carbon film for biomedical applications. Int J Artif Organs 1986; 9:127-30. [PMID: 3699909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The physical and chemical properties of carbon films, about 0.5 mu thick, deposited at low temperature (40-200 degrees C) by a new physical vapour deposition technique are presented, in comparison with those of pyrolytic carbon normally used in biomedical devices. Several analytical techniques have revealed that the thin carbon films present structural properties similar to those of pyrolytic carbon. For example, similar chemical bondings of C atoms are observed in both samples. Moreover the data suggest the presence in thin C films of both tetrahedral and graphitic bondings, as in the turbostratic structure typical of pyrolytic carbon. These results confirm the similar biocompatibility properties of both types of materials already established by in vivo experiments.
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Baraldi M, Giarré G, Santi M, Facchinetti F, Petraglia F, Genazzani AR. Pregnancy related changes of opiate receptors identified in rat uterine membranes by 3H-naloxone binding. Peptides 1985; 6:971-4. [PMID: 3001669 DOI: 10.1016/0196-9781(85)90330-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
3H-Naloxone was used to demonstrate the presence of specific opiate binding sites in uterine membrane preparations of rats. 3H-Naloxone binding (0.41-27 nM) was found to be rapid, saturable and reversible showing two populations of binding sites with the characteristic of high (KD 2.2 nM; Bmax 46.6 fmol/mg prot.) and low (KD 18.1 nM; Bmax 143.7 fmol/mg prot.) affinity. The number and affinity of the binding sites labelled by 3H-naloxone in the uterus were measured in the rat at mid (14 days), late (21 days) pregnancy and at parturition. The high and low affinity recognition sites labelled by 3H-naloxone showed a consistent reduction during pregnancy and at parturition without changes in the affinity constant. We concluded that pregnancy and parturition are associated with significant changes in the number of the opiate receptors bound in the uterus by 3H-naloxone. This phenomenon which seems to be linked with the several pregnancy-related changes in the levels of endogenous peptides and hormones could be relevant to further explain the pregnancy related changes in pain perception and maternal behavior.
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Petraglia F, Baraldi M, Giarrè G, Facchinetti F, Santi M, Volpe A, Genazzani AR. Opioid peptides of the pituitary and hypothalamus: changes in pregnant and lactating rats. J Endocrinol 1985; 105:239-45. [PMID: 3157762 DOI: 10.1677/joe.0.1050239] [Citation(s) in RCA: 66] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Immunoreactive (Ir) beta-endorphin concentrations were determined in plasma, anterior pituitary (AP), neurointermediate pituitary lobe (NIL) and mediobasal hypothalamus (MBH) of pregnant (12-14 and 18-20 days) and fertile control rats, during labour and lactation. Immunoreactive Met-enkephalin concentrations were also evaluated in the MBH. Concentrations of Ir beta-endorphin in plasma, AP and NIL of rats during early and late pregnancy were significantly higher than in controls, the plasma and AP contents showing an increasing pattern in the second half of gestation. During labour, Ir beta-endorphin concentrations in plasma and AP reached the highest values, whereas those in NIl remained unchanged. Lactating rats showed Ir beta-endorphin concentrations in NIL and plasma in a range similar to that found in pregnant rats, resulting in concentrations in the AP not significantly different from those of nonpregnant controls. Immunoreactive beta-endorphin and Ir Met-enkephalin concentrations in MBH of pregnant rats were almost twice as high as in controls, rising markedly during labour; during lactation levels were in the same range as in non-pregnant controls. These results indicate that pregnancy and labour are characterized by high plasma, pituitary and hypothalamic concentrations of Ir-beta-endorphin as well as by high hypothalamic Ir Met-enkephalin levels, and that Ir beta-endorphin concentrations vary differently during pregnancy, lactation and labour in the two pituitary lobes, supporting the existence of different control mechanisms in the AP and NIL.
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Santi M, Pinelli G, Ricci P, Penne A, Zeneroli ML, Baraldi M. Evidence that 2-phenylpyrazolo[4,3-c]-quinolin-3(5H)-one antagonises pharmacological, electrophysiological and biochemical effects of diazepam in rats. Neuropharmacology 1985; 24:99-105. [PMID: 2986034 DOI: 10.1016/0028-3908(85)90167-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The effects of the acute administration of 2-phenylpyrazolo[4,3-c]quinolin-3(5H)-one on diazepam-induced behaviour and electrophysiological activity were studied in rat. The compound, in doses of 5-10 mg/kg (i.p.), which per se did not induce alterations in spontaneous locomotor activity, antagonised the sedative effect induced by 5-10 mg/kg (i.p.) of diazepam. The injection of diazepam in rats, induced a profound reduction in the first negative wave of the recording of the visual evoked potential used as a sensitive electrophysiological test, in vivo. 2-Phenylpyrazolo[4,3-c]quinolin-3(5H)-one (10 mg/kg, i.p.) caused a recovery of the amplitude of the first negative wave within a few minutes. This result was confirmed by the finding that 2-phenylpyrazolo[4,3-c]quinolin-3(5H)-one, injected acutely in rats, pretreated with diazepam exhibited the capacity to antagonise the binding of [3H]diazepam determined in vitro on synaptic membrane preparations from cortex. The comparison of the pattern of the visual-evoked potential, recorded after the injection of 2-phenylpyrazolo[4,3-c]quinolin-3(5H)-one (50 mg/kg) with the patterns recorded after the injection of ethyl-8-fluoro-5,6-dihydro-5-methyl-6-oxo-4H-imidazolo(1,5a) (1,4)benzodiazepine-3-carboxylate (50 mg/kg) and ethyl-beta-carboline-3-carboxylate and 1-methyl-beta-carboline demonstrated that 2-phenylpyrazolo[4,3-c]quinolin-3(5H)-one is devoid of intrinsic activity.
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Baraldi M, Zeneroli ML, Ventura E, Penne A, Pinelli G, Ricci P, Santi M. Supersensitivity of benzodiazepine receptors in hepatic encephalopathy due to fulminant hepatic failure in the rat: reversal by a benzodiazepine antagonist. Clin Sci (Lond) 1984; 67:167-75. [PMID: 6086210 DOI: 10.1042/cs0670167] [Citation(s) in RCA: 102] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Benzodiazepine receptors were studied in rats with hepatic encephalopathy due to fulminant hepatic failure induced by galactosamine. [3H]-Diazepam binding studies on brain synaptic membranes of rats with mild and severe encephalopathy show a significant increase in the number of receptors in both stages of coma. [3H]Diazepam binding to synaptic membrane preparations from rats in the mild or severe stage of encephalopathy hyper-responded to the stimulatory effect of gamma-aminobutyric acid (GABA) applied in vitro at doses which for control rat preparations were in a subthreshold range. The effect of GABA was shown to be specific, since it was blocked by bicuculline methiodide. The sensitivity of benzodiazepine receptors in hepatic encephalopathy to nanomolar concentrations of GABA, which induced a significant increase in their affinity, seems to indicate a functional supersensitivity of benzodiazepine receptors in vivo in both mild and severe stages of encephalopathy. The phenomena described may be attributed to a partial degeneration of nerve terminals in hepatic encephalopathy, leading to a supersensitivity of benzodiazepine receptors, which parallels the previously described denervation supersensitivity of GABA receptors present in this animal model of fulminant hepatic failure. These findings may account for the brain hypersensitivity to sedatives administered to patients with liver diseases. The administration in vivo of a benzodiazepine antagonist, 2-phenylpyrazolo[4,3-c]-quinolin-3(5H)-one, counteracted the hypersensitivity of benzodiazepine receptors in the mild stage of encephalopathy.(ABSTRACT TRUNCATED AT 250 WORDS)
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Abstract
Cimetidine has been shown to reduce liver blood flow, as measured by indocyanine green clearance, in normal subjects. Concern over the potential deleterious effects of such reduction in cirrhosis led to the measurement of blood flow in 14 cirrhotics receiving oral or intravenous cimetidine. Liver blood flow was measured by the clearance of galactose at steady state during infusion of 40 mg per min. In six patients receiving 300 mg cimetidine by mouth each 6 hr for 4 days, basal flow (1,019 +/- 186 ml per min) was not significantly altered by cimetidine (1,087 +/- 156 ml per min). Intravenous infusion of cimetidine (300 mg) did not significantly alter flow in five patients between the basal (1,096 +/- 334 ml per min) and treatment periods (1,051 +/- 383 ml per min). Hepatic extraction of galactose in three patients (82 +/- 19%) was not significantly altered by cimetidine infusion (81 +/- 13%). The failure to reduce liver blood flow with cimetidine in this population may be due to their diminished proportion of portal venous flow, or alternatively suggests that histamine is not an important modulator of flow via H2 receptors. At a clinical level, the use of cimetidine in this population can continue without fear of further reduction in liver blood flow.
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Baraldi M, Poggioli R, Santi M, Vergoni AV, Bertolini A. Antidepressants and opiates interactions: pharmacological and biochemical evidences. Pharmacol Res Commun 1983; 15:843-57. [PMID: 6647527 DOI: 10.1016/s0031-6989(83)80092-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Imipramine, chronically administered to rats (20 mg/Kg/day X 20) has a potent analgesic effect per se (hot plate test), increases morphine analgesia and intensifies morphine withdrawal syndrome precipitated by naloxone. Receptor binding studies performed with 3H-naloxone revealed that chronic administration of imipramine results in a marked increase of opiate binding sites in the brain. This increase persisted when the rats treated chronically with imipramine were rendered tolerant to morphine by s.c. implantation for 3 days of a pellet containing 100 mg of morphine. Since antidepressants exert their own analgesic effect, increase morphine analgesia and displace opiate receptor binding, it may be that by interacting with the opiate receptor complex imipramine induces supersensitivity in opiate recognition binding sites.
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Orlando E, Santi M, Trebbi P, Cascella D, Gennari P, Pierangelli A. [Ultrasonic cardiography with the Doppler method in mitral stenosis]. Cardiol Prat 1974; 25:381-5. [PMID: 4465047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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