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Hassel J, Sarnaik A, Chesney J, Medina T, Hamid O, Thomas S, Wermke M, Domingo-Musibay E, Kirkwood J, Larkin J, Weber J, Arance Fernandez A, Rodriguez J, Thomas I, Corrie P, Gontcharova V, Wu X, Shi W, Kluger H. 35MO Number of IL-2 doses and clinical outcomes of tumor-infiltrating lymphocyte (TIL) cell therapy: Post hoc analysis of the C-144-01 trial of lifileucel in patients with advanced melanoma. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Bravo L, Smolenov I, Han HH, Li P, Hosain R, Rockhold F, Clemens SAC, Roa C, Borja-Tabora C, Quinsaat A, Lopez P, López-Medina E, Brochado L, Hernández EA, Reynales H, Medina T, Velasquez H, Toloza LB, Rodriguez EJ, de Salazar DIM, Rodríguez CA, Sprinz E, Cerbino-Neto J, Luz KG, Schwarzbold AV, Paiva MS, Carlos J, Montellano MEB, de Los Reyes MRA, Yu CY, Alberto ER, Panaligan MM, Salvani-Bautista M, Buntinx E, Hites M, Martinot JB, Bhorat QE, Badat A, Baccarini C, Hu B, Jurgens J, Engelbrecht J, Ambrosino D, Richmond P, Siber G, Liang J, Clemens R. Efficacy of the adjuvanted subunit protein COVID-19 vaccine, SCB-2019: a phase 2 and 3 multicentre, double-blind, randomised, placebo-controlled trial. Lancet 2022; 399:461-472. [PMID: 35065705 PMCID: PMC8776284 DOI: 10.1016/s0140-6736(22)00055-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/05/2021] [Accepted: 12/21/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND A range of safe and effective vaccines against SARS CoV 2 are needed to address the COVID 19 pandemic. We aimed to assess the safety and efficacy of the COVID-19 vaccine SCB-2019. METHODS This ongoing phase 2 and 3 double-blind, placebo-controlled trial was done in adults aged 18 years and older who were in good health or with a stable chronic health condition, at 31 sites in five countries (Belgium, Brazil, Colombia, Philippines, and South Africa). The participants were randomly assigned 1:1 using a centralised internet randomisation system to receive two 0·5 mL intramuscular doses of SCB-2019 (30 μg, adjuvanted with 1·50 mg CpG-1018 and 0·75 mg alum) or placebo (0·9% sodium chloride for injection supplied in 10 mL ampoules) 21 days apart. All study staff and participants were masked, but vaccine administrators were not. Primary endpoints were vaccine efficacy, measured by RT-PCR-confirmed COVID-19 of any severity with onset from 14 days after the second dose in baseline SARS-CoV-2 seronegative participants (the per-protocol population), and the safety and solicited local and systemic adverse events in the phase 2 subset. This study is registered on EudraCT (2020-004272-17) and ClinicalTrials.gov (NCT04672395). FINDINGS 30 174 participants were enrolled from March 24, 2021, until the cutoff date of Aug 10, 2021, of whom 30 128 received their first assigned vaccine (n=15 064) or a placebo injection (n=15 064). The per-protocol population consisted of 12 355 baseline SARS-CoV-2-naive participants (6251 vaccinees and 6104 placebo recipients). Most exclusions (13 389 [44·4%]) were because of seropositivity at baseline. There were 207 confirmed per-protocol cases of COVID-19 at 14 days after the second dose, 52 vaccinees versus 155 placebo recipients, and an overall vaccine efficacy against any severity COVID-19 of 67·2% (95·72% CI 54·3-76·8), 83·7% (97·86% CI 55·9-95·4) against moderate-to-severe COVID-19, and 100% (97·86% CI 25·3-100·0) against severe COVID-19. All COVID-19 cases were due to virus variants; vaccine efficacy against any severity COVID-19 due to the three predominant variants was 78·7% (95% CI 57·3-90·4) for delta, 91·8% (44·9-99·8) for gamma, and 58·6% (13·3-81·5) for mu. No safety issues emerged in the follow-up period for the efficacy analysis (median of 82 days [IQR 63-103]). The vaccine elicited higher rates of mainly mild-to-moderate injection site pain than the placebo after the first (35·7% [287 of 803] vs 10·3% [81 of 786]) and second (26·9% [189 of 702] vs 7·4% [52 of 699]) doses, but the rates of other solicited local and systemic adverse events were similar between the groups. INTERPRETATION Two doses of SCB-2019 vaccine plus CpG and alum provides notable protection against the entire severity spectrum of COVID-19 caused by circulating SAR-CoV-2 viruses, including the predominating delta variant. FUNDING Clover Biopharmaceuticals and the Coalition for Epidemic Preparedness Innovations.
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Affiliation(s)
- Lulu Bravo
- University of the Philippines Manila, Ermita, Manila, Philippines
| | | | | | - Ping Li
- Clover Biopharmaceuticals, Cambridge, MA, USA
| | | | - Frank Rockhold
- Duke University Clinical Research Institute, Duke University Medical Center, Durham, NC, USA
| | | | - Camilo Roa
- Manila Doctors Hospital, Manila, Philippines
| | | | | | - Pio Lopez
- Centro de Estudios en Infectología Pediátrica, Universidad Del Valle Clínica Imbanaco, Cali, Colombia
| | - Eduardo López-Medina
- Centro de Estudios en Infectología Pediátrica, Universidad Del Valle Clínica Imbanaco, Cali, Colombia
| | | | | | | | - Tatiana Medina
- Center of Attention in Medical Research, Bogotá, Colombia
| | | | | | | | | | | | - Eduardo Sprinz
- Hospital de Clinicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | | | - Maria Sanali Paiva
- Atena Institute of Clinical Research, Rio Grande do Norte, Natal, Brazil
| | - Josefina Carlos
- University of the East Ramon Magsaysay Memorial Medical Center, Quezon City, Philippines
| | | | | | - Charles Y Yu
- De La Salle Medical and Health Sciences Institute, Cavite City, Philippines
| | | | - Mario M Panaligan
- Infection Control Service, St Luke's Medical Center, Taguig, Philippines
| | | | | | - Maya Hites
- Clinic of Infectious Diseases, CUB-Hôpital Erasme, Bruxelles, Belgium
| | - Jean-Benoit Martinot
- Pulmonology Department, CHU Universite Catholique de Louvain Namur Site Sainte-Elisabeth, Namur, Belgium
| | - Qasim E Bhorat
- Soweto Clinical Trials Centre, Johannesburg, South Africa
| | - Aysha Badat
- Wits Clinical Research, Soweto, Johannesburg, South Africa
| | | | - Branda Hu
- Clover Biopharmaceuticals, Cambridge, MA, USA
| | - Jaco Jurgens
- DJW Research, Noordheuwel, Krugersdorp, Gauteng, South Africa
| | - Jan Engelbrecht
- Dr JM Engelbrecht Trial Site, Vergelegen Mediclinic, Western Cape, South Africa
| | | | - Peter Richmond
- Division of Paediatrics, University of Western Australia, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute and Perth Children's Hospital, Perth, WA, Australia
| | | | | | - Ralf Clemens
- Global Research in Infectious Diseases, Rio de Janeiro, Brazil.
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Sandhu S, Atkinson V, Cao MG, Medina T, Rivas AS, Caro I, Roberts L, Song Y, Yan Y, Long G. Interim analysis of a phase Ib study of cobimetinib plus atezolizumab in patients with advanced BRAFV600 wild type melanoma progressing on prior anti-PD-L1 therapy. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz255.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Long G, Milhem M, Amin A, Hoimes C, Medina T, Conry R, Lao C, Daniels G, Reddy S, Mehmi I, Andtbacka R, Barve M, Shaheen M, Tueting T, Chisamore M, Xing B, Candia A, Gamelin E, Janssen R, Ribas A. Phase Ib/II, open label, multicenter, study of the combination of SD-101 and pembrolizumab in patients with advanced melanoma who are naïve to anti-PD-1 therapy. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy424.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ribas A, Mehmi I, Medina T, Lao C, Kummar S, Amin A, Deva S, Salama A, Tueting T, Milhem M, Hoimes C, Daniels G, Shaheen M, Jang S, Barve M, Powell A, Chandra S, Schmidt E, Janssen R, Long G. Phase Ib/II study of the combination of SD-101 and pembrolizumab in patients with advanced melanoma who had progressive disease on or after prior anti-PD-1 therapy. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy289.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Harris R, Sato Y, Berkley AJ, Reis M, Altomare F, Amin MH, Boothby K, Bunyk P, Deng C, Enderud C, Huang S, Hoskinson E, Johnson MW, Ladizinsky E, Ladizinsky N, Lanting T, Li R, Medina T, Molavi R, Neufeld R, Oh T, Pavlov I, Perminov I, Poulin-Lamarre G, Rich C, Smirnov A, Swenson L, Tsai N, Volkmann M, Whittaker J, Yao J. Phase transitions in a programmable quantum spin glass simulator. Science 2018; 361:162-165. [PMID: 30002250 DOI: 10.1126/science.aat2025] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 05/15/2018] [Indexed: 11/02/2022]
Abstract
Understanding magnetic phases in quantum mechanical systems is one of the essential goals in condensed matter physics, and the advent of prototype quantum simulation hardware has provided new tools for experimentally probing such systems. We report on the experimental realization of a quantum simulation of interacting Ising spins on three-dimensional cubic lattices up to dimensions 8 × 8 × 8 on a D-Wave processor (D-Wave Systems, Burnaby, Canada). The ability to control and read out the state of individual spins provides direct access to several order parameters, which we used to determine the lattice's magnetic phases as well as critical disorder and one of its universal exponents. By tuning the degree of disorder and effective transverse magnetic field, we observed phase transitions between a paramagnetic, an antiferromagnetic, and a spin-glass phase.
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Affiliation(s)
- R Harris
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada.
| | - Y Sato
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - A J Berkley
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - M Reis
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - F Altomare
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - M H Amin
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada.,Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - K Boothby
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - P Bunyk
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - C Deng
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - C Enderud
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - S Huang
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - E Hoskinson
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - M W Johnson
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - E Ladizinsky
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - N Ladizinsky
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - T Lanting
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - R Li
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - T Medina
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - R Molavi
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada.,Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - R Neufeld
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - T Oh
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - I Pavlov
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - I Perminov
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | | | - C Rich
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - A Smirnov
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - L Swenson
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - N Tsai
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - M Volkmann
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - J Whittaker
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
| | - J Yao
- D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada
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Araos J, Cruces P, Tapia P, Alegria L, García P, Salomon T, Rodriguez F, Amthauer M, Castro G, Erranz B, Soto D, Carreño P, Medina T, Damiani F, Bugedo G, Bruhn A. Effect of a Lung Rest Strategy During Ecmo in a Porcine Acute Lung Injury Model. Intensive Care Med Exp 2015. [PMCID: PMC4796540 DOI: 10.1186/2197-425x-3-s1-a503] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Thompson CM, Carlo JP, Flacau R, Aharen T, Leahy IA, Pollichemi JR, Munsie TJS, Medina T, Luke GM, Munevar J, Cheung S, Goko T, Uemura YJ, Greedan JE. Long-range magnetic order in the 5d(2) double perovskite Ba2CaOsO6: comparison with spin-disordered Ba2YReO6. J Phys Condens Matter 2014; 26:306003. [PMID: 25001885 DOI: 10.1088/0953-8984/26/30/306003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The B-site ordered double perovskite Ba2CaOsO6 was studied by dc magnetic susceptibility, powder neutron diffraction and muon spin relaxation methods. The lattice parameter is a = 8.3619(6) Å at 280 K and cubic symmetry [Formula: see text] is retained to 3.5 K with a = 8.3462(7) Å. Curie-Weiss susceptibility behaviour is observed for T > 100 K and the derived constants are C = 0.3361(3) emu K mol(-1) and ΘCW = -156.2(3) K, in excellent agreement with literature values. This Curie constant is much smaller than the spin-only value of 1.00 emu K mol(-1) for a 5d(2) Os(6+) configuration, indicating a major influence of spin-orbit coupling. Previous studies had detected both susceptibility and heat capacity anomalies near 50 K but no definitive conclusion was drawn concerning the nature of the ground state. While no ordered Os moment could be detected by powder neutron diffraction, muon spin relaxation (µSR) data show clear long-lived oscillations indicative of a continuous transition to long-range magnetic order below TC = 50 K. An estimate of the ordered moment on Os(6+) is ∼ 0.2 μB, based upon a comparison with µSR data for Ba2YRuO6 with a known ordered moment of 2.2 μB. These results are compared with those for isostructural Ba2YReO6 which contains Re(5+), also 5d(2), and has a nearly identical unit cell constant, a = 8.36278(2) Å-a structural doppelgänger. In contrast, Ba2YReO6 shows ΘCW = - 616 K, and a complex spin-disordered and, ultimately, spin-frozen ground state below 50 K, indicating a much higher level of geometric frustration than in Ba2CaOsO6. The results on these 5d(2) systems are compared to recent theory, which predicts a variety of ferromagnetic and antiferromagnetic ground states. In the case of Ba2CaOsO6, our data indicate that a complex four-sublattice magnetic structure is likely. This is in contrast to the spin-disordered ground state in Ba2YReO6, despite a lack of evidence for structural disorder, for which theory currently provides no clear explanation.
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Affiliation(s)
- C M Thompson
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON L8S 4M1, Canada. Brockhouse Institute for Materials Research, McMaster University, Hamilton, ON L8S 4M1, Canada
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Mercedes-Acosta S, Fragoso-Báez A, Sabala R, Matos D, Medina T. Estudio de los trastornos postabdominoplastia de la sensibilidad cutánea superficial. Cir plást iberolatinoam 2013. [DOI: 10.4321/s0376-78922013000300002] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Abstract
Advanced melanoma has long been a challenging malignancy to treat due to a relative paucity of efficacious therapeutic options. However, the identification of activating BRAF mutations in approximately 50% of patients with cutaneous melanoma has ushered in the era of targeted therapy for melanoma patients. Similar to the first-in-class selective serine/threonine-protein kinase B-raf inhibitor vemurafenib, dabrafenib is highly efficacious in melanoma patients with BRAF V600E mutations, with response rates of approximately 50% and progression-free survival of 6 months. There is data to suggest that dabrafenib not only shows activity in V600E-mutated melanoma, but also in non-V600E BRAF-mutated disease such as V600K. There is also early data to suggest that dabrafenib is effective in controlling metastases in the brain. Combining dabrafenib with the selective mitogen-activated protein kinase kinase (MEK) inhibitor trametinib has been effective in improving both the progression-free survival and overall survival of melanoma patients over those patients treated with dabrafenib alone. Dabrafenib is still being evaluated in several clinical trials in melanoma as well as a variety of other solid tumors with BRAF mutations. The U.S. Food and Drug Administration has recently approved dabrafenib as a single agent for the treatment of unresectable or metastatic melanoma in adult patients with BRAF V600E mutation.
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Affiliation(s)
- T Medina
- Division of Hematology and Oncology, University of Colorado Cancer Center, Aurora, Colorado, USA
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11
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Medina T, Richer J, Horwitz K. 8 STUDY OF DIFFERENTIALLY EXPRESSED GENES IN LEIOMYOMATA AS COMPARED TO NORMAL MYOMETRIUM. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0004.7] [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: 11/18/2022]
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Sánchez López AM, Moreno-Torres Herrera R, Pérez de la Cruz AJ, Orduña Espinosa R, Medina T, López Martínez C. [Malnutrition prevalence in patients admitted to a rehabilitation and orthopedic surgery hospital]. NUTR HOSP 2005; 20:121-30. [PMID: 15813396] [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: 05/02/2023] Open
Abstract
OBJECTIVE Different studies show the scarce attention granted to the nutritional state in historical and clinical practice, what determines the ignorance of the patient's nutritional status to their entrance in the hospital and, therefore, the impossibility to prevent the hospital malnutrition. The objective of our study has been to determine the prevalence of patients' malnutrition entered in a Hospital of Orthopedic surgery and Rehabilitation. METHODS Observational and analytical study in 250 randomized patients (60% men and 40% women), who were nutritionally evaluated when entering, the hospital, by means of anthropometry (Weigh, height, BMI, skin-fold, corporal circumferences) and biochemical tests (Albumin, Prealbumin and Transferrin). RESULTS According to the BMI the prevalence of malnutrition was of 8%, the average of caloric malnutrition was of 2.8% (according to anthropometry) and the prevalence of many-sided malnutrition rises to 54.8% (according to biochemical markers). CONCLUSIONS The high prevalence of fundamental malnutrition (54.8%) demonstrated in this study, it shows the importance of determining the nutritional status when entering the hospital, particularly surgical type' patiens as is the case of most of those who enter the Orthopedic surgery hospitals.
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Affiliation(s)
- A Maria Sánchez López
- Unidad de Nutrición Clínica y Dietética, Hospital Universitario Virgen de las Nieves, Granada, España
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Lozano JM, Collado JA, Medina T, Muntané J. Protection against liver injury by PGE1 or anti-TNF-alpha is associated with a reduction of TNF-R1 expression in hepatocytes. Scand J Gastroenterol 2003; 38:1169-75. [PMID: 14686721 DOI: 10.1080/00365520310006063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 02/04/2023]
Abstract
BACKGROUND Tumour necrosis factor-alpha (TNF-5) has been shown to exacerbate or protect against liver injury in different experimental models. In a previous study, we observed that enhancement of TNF-alpha expression in hepatocytes by prostaglandin E1 (PGE1) pre-administration induced iNOS expression and cytoprotection against experimental liver injury in rats. Nevertheless, the reduction of TNF-alpha bioactivity by anti-TNF-alpha antibodies also reduced liver injury by D-GalN. The purpose of the present study was to evaluate whether protection by PGE1 or anti-TNF-alpha was related to a common effect on the membrane-bound TNF-alpha receptor expression. METHODS Liver injury was induced in male Wistar rats by intraperitoneal injection of D-galactosamine (D-GalN) (1 g/kg). PGE1 or anti-TNF-alpha was administered at 30 or 60 min before D-GalN, respectively. Liver injury was evaluated by alanine aminotransferase (ALT) activity in serum and histological examination in liver sections. TNF-alpha was determined by ELISA in serum. The expression of TNF-alpha receptor type 1 (TNF-R1) and TNF-alpha receptor type 2 (TNF-R2) in hepatocytes was assessed by immunohistochemistry and immunoprecipitation + Western-blot analysis. RESULTS PGE1 or anti-TNF-alpha reduced liver injury induced by D-GalN. Although PGE1 enhanced and anti-TNF-alpha reduced TNF-alpha concentration in serum, both protective treatments reduced the expression of TNF-R1 in hepatocytes. TNF-R2 was not detected in our experimental conditions. CONCLUSIONS Our study showed that reduction of liver injury by PGE1 or anti-TNF-alpha antibodies was related to a reduction of TNF-R1 expression in hepatocytes.
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Affiliation(s)
- J M Lozano
- Unidad Clínica Aparato Digestivo, Servicio Anatomía Patológica, Hospital Universitario Reina Sofía, Av Menéndez Pidal s/n, Córdoba, Spain
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Oller JD, Gómez JD, Kortazar JF, García JD, Navarro AA, Albertino RJ, Díaz JJ, Llorente JA, Andreu MN, Arcas RF, Medina T, Vázquez RJ. Scapular hibernoma fortuitously discovered on myocardial perfusion imaging through Tc-99m tetrofosmin. Clin Nucl Med 2001; 26:69-70. [PMID: 11139063 DOI: 10.1097/00003072-200101000-00020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A 49-year-old man was hospitalized for precordial pain. The result of a resting electrocardiograph was normal. Tc-99m tetrofosmin stress myocardial imaging was performed and uptake in the area of the left scapula was seen. The abnormality was caused by a subcutaneous tumor. Histologic examination revealed a hibernoma.
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Affiliation(s)
- J D Oller
- Surgery Service, San Agustín Hospital, Linares, Spain.
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Abstract
Galectin-3 is a 31 kD beta-galactoside-binding lectin which is expressed by several types of non-neoplastic and neoplastic cells and which may be involved in cell-extracellular matrix interactions. An immunohistochemical study has been made of the expression of galectin-3, as well as its ligand, laminin, in a spectrum of benign and malignant thyroid neoplasms and in some non-neoplastic conditions. Immunohistochemistry with anti-human recombinant galectin-3 antibody showed consistent, intense positivity in the neoplastic cells of 18 cases of papillary carcinoma and less intense staining in the five anaplastic carcinomas studied. In addition, two out of three poorly differentiated carcinomas, three out of six medullary carcinomas, and four out of eight follicular carcinomas had less intense or focal positivity. One case of Hürthle cell carcinoma showed scattered strongly positive cells. Eight follicular adenomas, three hyperplastic nodules, five nodular goitres, and normal thyroid tissue were negative. Galectin-3 mRNA expression was also evaluated in three of the papillary carcinomas, two follicular adenomas, and one hyperplastic nodule with matched normal tissue. Northern blot analysis demonstrated mRNA overexpression in the three cases of papillary carcinomas, whereas normal and benign tissues were negative. Laminin distribution in neoplastic and non-neoplastic tissue varied with architectural patterns but did not correlate with galectin-3 immunohistochemical expression. We conclude that expression of galectin-3 is limited to inflammatory foci in normal and benign thyroid tissue and is a phenotypic feature of malignant thyroid neoplasms, especially papillary carcinomas.
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Affiliation(s)
- P L Fernández
- Department of Anatomical Pathology, Hospital Clinico, University of Barcelona Medical School, Spain.
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Abstract
This article presents the advantages of design modifications and fabrication techniques for mandibular osseointegrated fixed prostheses. These design features provide definite mechanical advantages and access for oral hygiene maintenance. A review of implant surface properties is presented that affect bacterial plaque and food debris adherence. The suggested design involves a lingual contour of the cast alloy suprastructure to yield an environment for reduced plaque and debris accumulation. The right angle cross-section ensures strength and increased stress distribution in structurally compromised areas when compared with conventional implant framework designs.
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Affiliation(s)
- A S von Gonten
- Combined Prosthodontics Program, William Beaumont Army Medical Center, US Army Dental Activity, Fort Bliss, Texas, USA
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