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Ponce Aix S, Cote GM, Falcon Gonzalez A, Sepulveda JM, Jimenez Aguilar E, Sanchez-Simon I, Flor MJ, Nuñez R, Gonzalez EM, Insa M, Siguero M, Cullell-Young M, Kahatt CM, Zeaiter AH, Paz-Ares LG. Lurbinectedin (LUR) in combination with Irinotecan (IRI) in patients (pts) with advanced solid tumors: Updated results from a phase Ib-II trial. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.15_suppl.3514] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
3514 Background: LUR is a novel agent that exerts antitumor activity through inhibition of trans-activated transcription and modulation of tumor microenvironment. Preclinical synergism/additivity in combination with IRI has been reported, thus prompting the conduct of this clinical trial. Methods: Phase Ib-II trial to evaluate escalating doses of LUR on Day (D) 1 plus a fixed dose of IRI 75 mg/m2 on D1 and D8 every 3 weeks (q3w) in pts with advanced solid tumors (+/- G-CSF, if dose-limiting toxicities [DLTs] were neutropenia). Starting dose was LUR 1.0 m/m2 + IRI 75 mg/m2. Results: 77 pts have been treated to date at 5 dose levels, 51 of them at the recommended dose (RD). Baseline characteristics of all 77 pts were: 48% females, 68% ECOG PS=1; median age 57 years (range, 19-75 years); median of 2 prior lines (range, 0−4 lines). The maximum tolerated dose (MTD) was LUR 2.4 mg/m2 + IRI 75 mg/m2 with G-CSF, and the RD was LUR 2.0 mg/m2 + IRI 75 mg/m2 with G-CSF. DLTs in Cycle 1 occurred in 2/3 evaluable pts at the MTD and 3/13 evaluable pts at the RD, and comprised omission of IRI D8 infusion due to grade (G) 3/4 neutropenia (n=3 pts) or G2-4 thrombocytopenia (n=2). At the RD (n=51), common G1/2 non-hematological toxicities were nausea, vomiting, fatigue, diarrhea, anorexia and neuropathy. G3 non-hematological toxicities (diarrhea 10%, fatigue 10%) and G3/4 hematological abnormalities (neutropenia 49%, thrombocytopenia 10%) were transient. Conclusions: The combination of LUR and IRI had acceptable tolerance, with no unexpected toxicities. Transient myelosuppression was dose-limiting. The RD is LUR 2.0 mg/m2 on D1 + IRI 75 mg/m2 on D1 and D8 q3w with G-CSF. Antitumor activity was observed at the RD in SCLC pts, as well as in endometrial carcinoma pts. Hints of activity were also observed in STS pts. Updated results will be presented. Clinical trial information: NCT02611024 . [Table: see text]
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Rollano V, Muñoz-Noval A, Gomez A, Valdes-Bango F, Martin JI, Velez M, Osorio MR, Granados D, Gonzalez EM, Vicent JL. Topologically protected superconducting ratchet effect generated by spin-ice nanomagnets. Nanotechnology 2019; 30:244003. [PMID: 30790770 DOI: 10.1088/1361-6528/ab0923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We have designed, fabricated and tested a robust superconducting ratchet device based on topologically frustrated spin ice nanomagnets. The device is made of a magnetic Co honeycomb array embedded in a superconducting Nb film. This device is based on three simple mechanisms: (i) the topology of the Co honeycomb array frustrates in-plane magnetic configurations in the array yielding a distribution of magnetic charges which can be ordered or disordered with in-plane magnetic fields, following spin ice rules; (ii) the local vertex magnetization, which consists of a magnetic half vortex with two charged magnetic Néel walls; (iii) the interaction between superconducting vortices and the asymmetric potentials provided by the Néel walls. The combination of these elements leads to a superconducting ratchet effect. Thus, superconducting vortices driven by alternating forces and moving on magnetic half vortices generate a unidirectional net vortex flow. This ratchet effect is independent of the distribution of magnetic charges in the array.
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Affiliation(s)
- V Rollano
- IMDEA-Nanociencia, Cantoblanco, E-28049 Madrid, Spain
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3
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Lin FI, Gonzalez EM, Kummar S, Do K, Shih J, Adler S, Kurdziel KA, Ton A, Turkbey B, Jacobs PM, Bhattacharyya S, Chen AP, Collins JM, Doroshow JH, Choyke PL, Lindenberg ML. Utility of 18F-fluoroestradiol ( 18F-FES) PET/CT imaging as a pharmacodynamic marker in patients with refractory estrogen receptor-positive solid tumors receiving Z-endoxifen therapy. Eur J Nucl Med Mol Imaging 2016; 44:500-508. [PMID: 27872957 DOI: 10.1007/s00259-016-3561-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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: 06/22/2016] [Accepted: 10/25/2016] [Indexed: 01/13/2023]
Abstract
BACKGROUND Z-endoxifen is the most potent of the metabolites of tamoxifen, and has the potential to be more effective than tamoxifen because it bypasses potential drug resistance mechanisms attributable to patient variability in the expression of the hepatic microsomal enzyme CYP2D6. 18F-FES is a positron emission tomography (PET) imaging agent which selectively binds to estrogen receptor alpha (ER-α) and has been used for non-invasive in vivo assessment of ER activity in tumors. This study utilizes 18F-FES PET imaging as a pharmacodynamic biomarker in patients with ER+ tumors treated with Z-endoxifen. METHODS Fifteen patients were recruited from a parent therapeutic trial of Z-endoxifen and underwent imaging with 18F-FES PET at baseline. Eight had positive lesions on the baseline scan and underwent follow-up imaging with 18F-FES 1-5 days post administration of Z-endoxifen. RESULTS Statistically significant changes (p = 0.0078) in standard uptake value (SUV)-Max were observed between the baseline and follow-up scans as early as 1 day post drug administration. CONCLUSION F-FES PET imaging could serve as a pharmacodynamic biomarker for patients treated with ER-directed therapy.
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Affiliation(s)
- Frank I Lin
- Cancer Imaging Program, National Cancer Institute, NIH, Bethesda, MD, USA. .,Molecular Imaging Program, National Cancer Institute, Bethesda, MD, USA.
| | - E M Gonzalez
- Molecular Imaging Program, National Cancer Institute, Bethesda, MD, USA
| | - S Kummar
- Division of Cancer Treatment and Diagnosis and Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - K Do
- Division of Cancer Treatment and Diagnosis and Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - J Shih
- Biometric Research Program, National Cancer Institute, NIH, Bethesda, MD, USA
| | - S Adler
- Clinical Research Directorate/Clinical Monitoring Research Program, Leidos Biomedical Research, Inc., NCI Campus at Frederick, Frederick, MD, 21702, USA
| | - K A Kurdziel
- Molecular Imaging Program, National Cancer Institute, Bethesda, MD, USA
| | - A Ton
- Molecular Imaging Program, National Cancer Institute, Bethesda, MD, USA
| | - B Turkbey
- Molecular Imaging Program, National Cancer Institute, Bethesda, MD, USA
| | - P M Jacobs
- Cancer Imaging Program, National Cancer Institute, NIH, Bethesda, MD, USA
| | - S Bhattacharyya
- Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Frederick, MD, USA
| | - A P Chen
- Early Clinical Trials Development Program, DCTD, National Cancer Institute, Bethesda, MD, USA
| | - J M Collins
- Division of Cancer Treatment and Diagnosis and Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - J H Doroshow
- Division of Cancer Treatment and Diagnosis and Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - P L Choyke
- Molecular Imaging Program, National Cancer Institute, Bethesda, MD, USA
| | - M L Lindenberg
- Molecular Imaging Program, National Cancer Institute, Bethesda, MD, USA
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del Valle J, Gomez A, Gonzalez EM, Osorio MR, Granados D, Vicent JL. Superconducting/magnetic Three-state Nanodevice for Memory and Reading Applications. Sci Rep 2015; 5:15210. [PMID: 26469373 PMCID: PMC4606737 DOI: 10.1038/srep15210] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 07/02/2015] [Accepted: 09/21/2015] [Indexed: 11/15/2022] Open
Abstract
We present a simple nanodevice that can operate in two modes: i) non-volatile three-state memory and ii) reading device. The nanodevice can retain three well defined states −1, 0 and +1 and can operate in a second mode as a sensor for external magnetic fields. The nanodevice is fabricated with an array of ordered triangular-shaped nanomagnets embedded in a superconducting thin film gown on Si substrates. The device runs based on the combination of superconducting vortex ratchet effect (superconducting film) with the out of plane magnetization (nanomagnets). The input signals are ac currents and the output signal are dc voltages. The memory mode is realized without applying a magnetic field and the nanomagnet stray magnetic fields govern the effect. In the sensor mode an external magnetic field is applied. The main characteristic of this mode is that the output signal is null for a precise value of the external magnetic field that only depends on the fabrication characteristics of the nanodevice.
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Affiliation(s)
- J del Valle
- Departamento Fisica de Materiales, Facultad de CC. Fisicas, Universidad Complutense, 28040 Madrid (Spain)
| | - A Gomez
- Departamento Fisica de Materiales, Facultad de CC. Fisicas, Universidad Complutense, 28040 Madrid (Spain)
| | - E M Gonzalez
- Departamento Fisica de Materiales, Facultad de CC. Fisicas, Universidad Complutense, 28040 Madrid (Spain).,IMDEA-Nanociencia, Cantoblanco, 28049 Madrid (Spain)
| | - M R Osorio
- IMDEA-Nanociencia, Cantoblanco, 28049 Madrid (Spain)
| | - D Granados
- IMDEA-Nanociencia, Cantoblanco, 28049 Madrid (Spain)
| | - J L Vicent
- Departamento Fisica de Materiales, Facultad de CC. Fisicas, Universidad Complutense, 28040 Madrid (Spain).,IMDEA-Nanociencia, Cantoblanco, 28049 Madrid (Spain)
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5
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Perez de Lara D, Dinis L, Gonzalez EM, Parrondo JMR, Anguita JV, Vicent JL. Rocking ratchets in nanostructured superconducting-magnetic hybrids. J Phys Condens Matter 2009; 21:254204. [PMID: 21828428 DOI: 10.1088/0953-8984/21/25/254204] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Two rectification mechanisms in vortex lattice dynamics in Nb films have been studied. These two effects are based on ratchet effects, that is, an ac driving force induces a net dc vortex flow. In our case, an input ac current applied to the Nb films, grown on top of arrays of Ni nanotriangles, yields an output dc voltage. These two rectification effects occur when the vortex lattice moves in periodic asymmetric potentials. These pinning potentials are induced by the array of Ni triangles. In one configuration (longitudinal effect) the driven force is applied perpendicular to the triangle reflection symmetry axis; in the second one (transverse effect) the input current is injected parallel to the triangle reflection symmetry axis. In the framework of the rocking ratchet mechanism, the appropriate Langevin equation allows us to model the experimental data, taking into account the vortex-vortex interaction.
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Affiliation(s)
- D Perez de Lara
- Departamento Fisica Materiales, Facultad Ciencias Fisicas, Universidad Complutense, 28040 Madrid, Spain
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Villegas JE, Savel'ev S, Nori F, Gonzalez EM, Anguita JV, García R, Vicent JL. A superconducting reversible rectifier that controls the motion of magnetic flux quanta. Science 2003; 302:1188-91. [PMID: 14615532 DOI: 10.1126/science.1090390] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
We fabricated a device that controls the motion of flux quanta in a niobium superconducting film grown on an array of nanoscale triangular pinning potentials. The controllable rectification of the vortex motion is due to the asymmetry of the fabricated magnetic pinning centers. The reversal in the direction of the vortex flow is explained by the interaction between the vortices trapped on the magnetic nanostructures and the interstitial vortices. The applied magnetic field and input current strength can tune both the polarity and magnitude of the rectified vortex flow. Our ratchet system is explained and modeled theoretically, taking the interactions between particles into consideration.
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Affiliation(s)
- J E Villegas
- Departamento de Física de Materiales, Facultad Ciencias Físicas, Universidad Complutense, 28040, Madrid, Spain
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Abstract
In this paper, the basics, screening technique and major indications of ocular ultrasound are described. This diagnostic technique proved to be an essential tool to examine intraocular structures when opacified ocular media inhibit direct examination and to evaluate retrobulbar structures when exophthalmos is evident.
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Affiliation(s)
- E M Gonzalez
- Hospital Clinico Veterinario, Facultad de Veterinaria de la UCM, Departamento de Patologia Animal II, Madrid, Spain
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8
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Gonzalez EM. Treatment of surgical lesions and complications of common bile ducts: introduction. World J Surg 2001; 25:1239-40. [PMID: 11596881 DOI: 10.1007/s00268-001-0101-9] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Gonzalez EM, Fekany-Lee K, Carmany-Rampey A, Erter C, Topczewski J, Wright CV, Solnica-Krezel L. Head and trunk in zebrafish arise via coinhibition of BMP signaling by bozozok and chordino. Genes Dev 2000; 14:3087-92. [PMID: 11124801 PMCID: PMC317122 DOI: 10.1101/gad.852400] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2000] [Accepted: 10/31/2000] [Indexed: 11/25/2022]
Abstract
Spatial variations in the levels of bone morphogenetic protein (BMP) signaling are a critical determinant of dorsoanterior-ventroposterior pattern in vertebrate embryos. Whereas BMP overexpression abolishes both head and trunk development, known single and double loss-of-function mutations in BMP inhibitors have less dramatic effects. We report that combining mutations in the zebrafish genes bozozok and chordino causes a synergistic loss of head and trunk, whereas most cells express ventro-posterior markers and develop into a tail. Genetic inactivation of BMP signaling fully suppresses these defects. Thus, a remarkably simple genetic mechanism, involving a coinhibition of BMP function by the partially overlapping bozozok and chordino pathways is used to specify vertebrate head and trunk.
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Affiliation(s)
- E M Gonzalez
- Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee 37235, USA
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Miller-Bertoglio V, Carmany-Rampey A, Fürthauer M, Gonzalez EM, Thisse C, Thisse B, Halpern ME, Solnica-Krezel L. Maternal and zygotic activity of the zebrafish ogon locus antagonizes BMP signaling. Dev Biol 1999; 214:72-86. [PMID: 10491258 DOI: 10.1006/dbio.1999.9384] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.5] [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: 11/22/2022]
Abstract
The dorsal-ventral axis of vertebrate embryos is thought to be specified by a gradient of bone morphogenetic protein (BMP) activity, which, in part, arises through the interaction of dorsally expressed antagonists Chordin and Noggin with the ventralizing BMPs. The zebrafish mercedes(tm305), ogon(m60), and short tail(b180) mutations produce ventralized phenotypes, including expanded bmp2b/4 expression domains. We find that the three mutations are allelic and that the locus they define, renamed ogon (ogo), maps to linkage group 25. The ogo(m60) and ogo(b180) mutations are deficiencies and thus represent null alleles, whereas the ENU-induced allele ogo(tm305) retains partial function. Aspects of the ogo(m60) and ogo(tm305) mutant phenotypes are fully suppressed by overexpression of BMP antagonists. Moreover, swirl(tc300), a null mutation in bmp2b, is epistatic to ogo(m60) mutation, providing further evidence that ogo normally functions in a BMP-dependent manner. Embryonic patterning is highly sensitive to maternal and zygotic ogo gene dosage, especially when the level of zygotic chordin activity is also reduced. However, elimination of the zygotic activity of both genes does not result in a completely ventralized embryo. Thus, while ogo and chordin are required to limit activity of BMPs, additional mechanisms must exist to block these ventralizing signals. We have ruled out zebrafish noggin homologues as candidates for the ogo gene, including a newly identified gene, nog1, which is specifically expressed in the gastrula organizer. The results suggest that ogo encodes an as yet unidentified dorsalizing factor that mediates dorsoventral patterning by directly or indirectly antagonizing BMP activity.
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Affiliation(s)
- V Miller-Bertoglio
- Department of Embryology, Carnegie Institution of Washington, Johns Hopkins University, Baltimore, MD, USA
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11
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Loinaz C, de Juanes JR, Gonzalez EM, López A, Lumbreras C, Gómez R, Gonzalez-Pinto I, Jiménez C, Garcia I, Fuertes A. Hepatitis B vaccination results in 140 liver transplant recipients. Hepatogastroenterology 1997; 44:235-8. [PMID: 9058151] [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: 02/03/2023]
Abstract
BACKGROUND/AIMS Human autologous liver transplantation is possible due to an adequate suppression of the body's immune response. This also causes a higher hepatitis infection rate, making hepatitis prevention very important. MATERIALS AND METHODS We describe our experience with hepatitis B virus vaccination in 140 adult liver transplant recipients, transplanted from 1986 to 1994 with more than one year of follow-up. Excluded were those who had hepatitis B surface antigens or antibodies to those antigens before the transplant. The vaccination schedule was 0-1-2 months with a double dose of recombinant vaccine. RESULTS The total response rate (surface antigen antibodies > 10 U) was 40% (56/140); the rate was 47.7% in men and 26% in women. At the end of the study, only 17.1% (24/140) of the patients had antibodies > 10 U. The response rate was higher in patients with antibodies to hepatitis B core antigen (66.6%) than in those lacking antibodies (31.7%), and more long lasting (42.4% vs 11.2%). The response rate in 116 patients with booster doses was 12.9%. Six correctly vaccinated patients (4.28%) acquired new hepatitis B virus infections after the operation. CONCLUSIONS The total response rate in these patients is much lower than in the general population, and there is a rapid decline of titers, probably due to immunosuppression. The role of booster doses in these patients should be clarified.
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Affiliation(s)
- C Loinaz
- Servicio de Cirugia General, Hospital 12 de Octubre, Madrid, Spain
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12
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Loughman MS, Chatzistefanou K, Gonzalez EM, Flynn E, Adamis AP, Shing Y, D'Amato RJ, Folkman J. Experimental corneal neovascularisation using sucralfate and basic fibroblast growth factor. Aust N Z J Ophthalmol 1996; 24:289-95. [PMID: 8913136 DOI: 10.1111/j.1442-9071.1996.tb01596.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE To develop a non-inflammatory model of both acute and chronic angiogenesis in the rabbit cornea using a known directly angiogenic cytokine. METHODS Pellets made of the slow-release polymer Hydron (polyhydroxyethylmethacrylate) and containing sucralfate and/or basic fibroblast growth factor (basic-FGF) were implanted into rabbit corneas. The neovascular response to the implantation of pellets containing basic-FGF alone, sucralfate alone or a titration of basic-FGF in the presence of a constant amount of sucralfate was measured. The role of inflammation in the neovascular response was also investigated. RESULTS The addition of sucralfate to the pellets led to the sustained release of basic-FGF resulting in a predictable and aggressive neovascular response with a low dose of basic-FGF that by itself was unable to elicit neovascularisation. At a dose of 500 ng per pellet, approximately one-third of the surface area of the cornea was vascularised within eight days of implantation. Minimal or no vascularisation occurred with the same dose of basic-FGF without sucralfate. While this dose of basic-FGF induced corneal oedema, only minimal inflammation was observed and the response was unaffected by ionising radiation. A less aggressive though still robust neovascular response with no or only minimal oedema was observed when the dose was lowered to 50 ng of basic-FGF per pellet. Some induced vessels persisted for more than three months. CONCLUSION This is an inexpensive in vivo model of angiogenesis with the advantages of the neovascularisation being aggressive, predictable, persistent, unassociated with an obvious inflammatory response and induced by the sustained release of an agent known to have a direct stimulatory action on endothelial cells.
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Affiliation(s)
- M S Loughman
- Department of Surgery, Harvard Medical School, Children's Hospital, Boston, Massachusetts 02115, USA
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13
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Gonzalez EM, Pascual MH, Aguirre JI, Saputelli A, Gonzalez JS, Selas PR, Sanz RG, Romero CJ. [Surgery of liver metastases secondary to colorectal carcinoma]. Ann Ital Chir 1992; 63:313-5. [PMID: 1443996] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- E M Gonzalez
- Servicio de Cirugia General y Ap. Digestivo C, Hospital 12 de Octubre, Madrid
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Li WW, Casey R, Gonzalez EM, Folkman J. Angiostatic steroids potentiated by sulfated cyclodextrins inhibit corneal neovascularization. Invest Ophthalmol Vis Sci 1991; 32:2898-905. [PMID: 1917393] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
It is known that hydrocortisone can be converted to a potent angiogenesis inhibitor by coadministration with heparin or with a sulfated cyclodextrin. The activity of tetrahydrocortisol-S, a purely angiostatic corticosteroid, can be potentiated by beta-cyclodextrin tetradecasulfate as shown in this study. This drug "pair" and other pairs of corticosteroids and beta-cyclodextrin tetradecasulfate can be applied topically to inhibit corneal neovascularization. Endotoxin-induced corneal neovascularization in rabbits was treated with beta-cyclodextrin tetradecasulfate coadministered with either: hydrocortisone, tetrahydrocortisol-S, or 6-alpha-fluoro-17,21-dihydroxy-16-beta-methyl-pregna-4,9(11),diene,3, 20-dione. When optimal ratios of steroid and cyclodextrin were used, neovascularization was reduced to 13%, 26%, and 28% of untreated controls for the three steroids, respectively. Hydrocortisone-cyclodextrin drug pairs suppressed virtually all inflammatory cell infiltration (induced by endotoxin), whereas tetrahydrocortisol-cyclodextrin pairs only partially reduced inflammation. These results demonstrate that corneal neovascularization and corneal inflammation are separable processes and that the neovascularization may be treated specifically using angiostatic steroids without inflammatory activity.
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Affiliation(s)
- W W Li
- Department of Surgery, Children's Hospital, Boston, MA 02115
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Abstract
Patients with Cushing's syndrome rarely become pregnant. This is a high risk situation both for the fetus and the mother, if untreated. We report a patient with Cushing's syndrome due to adrenocortical adenoma who became pregnant and was successfully treated with ketoconazole during the last period of pregnancy.
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Affiliation(s)
- J A Amado
- Endocrine Unit, Valdecilla Hospital, University of Cantabria, Santander, Spain
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Affiliation(s)
- E M Gonzalez
- Head Digestive Surgery Department, Instituto Nacional de la Salud, Madrid, Spain
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Gonzalez EM, Garcia-Blanch G, Blanco JM, Garcia IG, Ocana AG. Treatment of splenic artery aneurysm after distal splenorenal shunt. A case report. Jpn J Surg 1981; 11:377-80. [PMID: 7311198 DOI: 10.1007/bf02468964] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A patient with splenic artery aneurysm which developed after creation of selective distal spleno-renal shunt for hepatic cirrhosis and portal hypertension was presented. Three months after operation, an aneurysm of the splenic artery with a diameter of about 20 mm was detected. This aneurysm reached 4 cm three months later, and a resection was carried out. An arterial continuity was established by means of end-to-end anastomosis of the sectioned arterial ends. Because the flow through the splenic artery was about 60% of the total flow of the selective distal spleno-renal shunt, it is important to maintain continuity in order to avoid thrombosis of the shunt.
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Gonzalez EM, Garcia JI, Selas PR, Azcoita MM, Garcia JI, Gonzalez JS. Extented esophago-gastretomy as surgical treatment for carcinoma of the cardia. Jpn J Surg 1981; 11:311-6. [PMID: 7311192 DOI: 10.1007/bf02468953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
With the object of designing a feasible and more radical surgical intervention for the treatment of carcinoma of the gastric cardia and improving the long term survival of these patients, a procedure was described which entails total esophagogastrectomy and resection of the distal pancreas, spleen and regional lymphnodes. The esophagus was mobilized via the diaphragmatic hiatus without thoracotomy. Intestinal continuity, installed isoperistaltically was restituted in the same operation using a segment of transverse and descending colon transferred to the left lateral cervical aspect by way of the posterior mediastinum. The procedure was used in four patients and mortality and serious complications were nil.
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Gonzalez EM, San Martin JH, Garcia IG. Selective coronary-caval shunt using internal jugular autograft, in the treatment of portal hypertension. Jpn J Surg 1979; 9:17-23. [PMID: 312348 DOI: 10.1007/bf02468711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The selective coronary-caval shunt is considered to be one of the better procedures in the surgical treatment of portal hypertension. We have altered the previously described technique by using an internal jugular vein grafting which possesses some advantages. We have performed this shunt utilizing an internal jugular vein autograft in eight patients, who had at least one major hemorrhage from esophageal varices three to twelve months before operation. There were no postoperative deaths. All four patients are still alive three months to six years after shunting without bleeding episodes. In the X-ray and endoscopic studies the esophagogastric varices were noted to be markedly smaller in size than they were before shunting.
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Abstract
Cephalexin was found to be polarographically reducible after hydrolysis in an acidic medium, producing two polarographic waves. Both waves were diffusion controlled. The concentration-diffusion plot method was used for the analysis of cephalexin in capsules.
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Gonzalez EM, Martin JH, Abella PC, Aguyo JL, Jelavik D. Interposition left gastric-caval shunt using internal jugular vein autograft in the treatment of portal hypertension. Br J Surg 1978; 65:115-7. [PMID: 626822 DOI: 10.1002/bjs.1800650213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The selective left gastric-caval shunt is, in theory, one of the better procedures in the surgical treatment of portal hypertension. We have performed a modification of the previously described technique utilizing an internal jugular vein autograft in 4 patients who had had more than one major haemorrhage from oesophageal varices 3-12 months before operation. There were no post-operative deaths. All 4 patients are still alive 3 months to 4 years after shunting, with no episodes of bleeding. On radiological and endoscopic follow-up, the oesophagogastric varices were noted to be markedly smaller in size than before shunting.
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Malamud D, Gonzalez EM, Chiu H, Malt RA. Inhibition of cell proliferation by azathioprine. Cancer Res 1972; 32:1226-9. [PMID: 5030822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Rousselot LM, Cole DR, Grossi CE, Conte AJ, Gonzalez EM, Pasternack BS. Adjuvant chemotherapy with 5-fluorouracil in surgery for colorectal cancer: eight-year progress report. Dis Colon Rectum 1972; 15:169-74. [PMID: 5028579 DOI: 10.1007/bf02589856] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Gonzalez EM, Krejczy K, Malt RA. Modification of nucleic acid synthesis in regenerating liver by azathioprine. Surgery 1970; 68:254-8; discussion 258-9. [PMID: 10483477] [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: 02/13/2023]
Abstract
The effect of azathioprine at 40 mg. per kilogram per day (LD25 at four days) was studied in rats following excision of two thirds of the liver. 1. The restoration of liver mass after four days was unchanged. 2. The rate of DNA synthesis was inhibited by a factor of 100 on the first day. DNA concentration decreased 24 percent by two days and 38 percent by four days in comparison with nontreated rats. 3. The rate of RNA synthesis was at first depressed, then accelerated. RNA concentrations were normal at four days. 4. The ratio of RNA to DNA was increased 59 percent at four days. 5. Hepatic regeneration was chiefly by cellular hypertrophy rather than by hyperplasia.
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Affiliation(s)
- E M Gonzalez
- Surgical Services, Massachusetts General Hospital, Boston, USA
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Rousselot LM, Cole DR, Grossi CE, Conte AJ, Gonzalez EM, Pasternack BS. A five year progress report on the effectiveness of intraluminal chemotherapy (5-fluorouracil) adjuvant to surgery for colorectal cancer. Am J Surg 1968; 115:140-7. [PMID: 5635578 DOI: 10.1016/0002-9610(68)90021-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Rousselot LM, Cole DR, Grossi CE, Conte AJ, Gonzalez EM. Intraluminal chemotherapy (HN2 or 5-FU) adjuvant to operation for cancer of the colon and rectum. II. Follow-up report of 97 cases. Cancer 1967; 20:829-33. [PMID: 5337397 DOI: 10.1002/1097-0142(1967)20:5<829::aid-cncr2820200540>3.0.co;2-f] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Grossi CE, Rousselot LM, Gonzalez EM, Doehner G, Conte AJ. Augmentation of lymphatic uptake of chemotherapeutic agents by induced hepatic outflow block. Arch Surg 1966; 92:333-6. [PMID: 5906824 DOI: 10.1001/archsurg.1966.01320210013002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Grossi CE, Rousselot LM, Gonzalez EM, Conte AJ. Selective concentration in liver and thoracic duct lymph of anticancer drugs by hepatic outflow block. Am J Surg 1966; 111:59-65. [PMID: 5901376 DOI: 10.1016/0002-9610(66)90343-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Rousselot LM, Cole DR, Slattery J, Grossi CE, Gonzalez EM. Intraluminal chemotherapy adjuvant (HN2 or 5-FU) to operation for cancer of the colon and rectum. Follow-up report of 83 cases. Ann Surg 1965; 162:407-15. [PMID: 5829717 PMCID: PMC1476900 DOI: 10.1097/00000658-196509000-00010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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