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Alehyen S, Benssejjay F, EL Achouri M, Infante MR, Perez L, Benssouda Y. Synthesis of 1,3-Bis-[(Dodecanoyl Oxypropyl Dimethylammonium) Propane] Dibromide Ester-Quat Surfactant: Micellar, Thermodynamic and Corrosion-Inhibiting Properties. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.100336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Ester – quat surfactant: 1,3-bis-[(dodecanoyl oxypropyl dimethylammonium) propane] dibromide referred as 12-3-3-3-12 was synthesized, purified and characterized by Elemental Analysis, 1H-NMR, 13C-NMR, IR and Mass Spectra. The thermodynamic properties of aqueous solutions of this ester-quat were investigated using Electrical Conductivity and Surface Tension measurements. The corresponding parameters of micellisation were determined for each technique. Otherwise the inhibitive action of the ester-quat (12-3-3-3-12) on the corrosion behaviour of iron was investigated in HCl and H2SO4 medium by means Electrochemical Resistance and Polarisation methods. The ester-quat 12-3-3-3-12 acts as a cathodic-type inhibitor. The maximum inhibition efficiency was reached around the critical micellar concentration. The ester-quat appears to be adsorbed in the metal/liquid interface through the general mode following the Frumkin adsorption model.
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Mehta AJ, Schindler C, Perez L, Probst-Hensch N, Schwartz J, Brändl O, Karrer W, Tschopp JM, Rochat T, Künzli N. Acute respiratory health effects of urban air pollutants in adults with different patterns of underlying respiratory disease. Swiss Med Wkly 2012; 142:w13681. [PMID: 23076649 DOI: 10.4414/smw.2012.13681] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Whether underlying chronic respiratory diseases are susceptible factors for symptomatic episodes, which lead to primary-level care, in association with air pollutant exposures is unknown. We evaluated and compared association lag structures between daily ambient levels of nitrogen dioxide (NO(2)) and total suspended particulates (TSP) and respiratory symptom-related doctor visits in adults with different patterns of underlying chronic respiratory disease. METHODS In a time-stratified case-crossover analysis nested within a diary panel study, 459 Swiss adult participants with asthma, chronic bronchitis, chronic obstructive pulmonary disease (COPD) and healthy participants recorded occurrence of respiratory-symptom related doctor visits (n = 1,048) in one to six four-week intervals over two years. For each disease subgroup, odds ratios (ORs) for doctor visit were estimated as a function of NO(2) or TSP concentrations (per 10 micrograms per cubic meter [µg/m(3)]) lagged between 0-13 days in a polynomial distributed lag model. RESULTS Higher ORs for NO(2) in participants with COPD (OR: 1.17, 95%CI: 1.02-1.35) and asthma (OR: 1.15, 95%CI: 1.02-1.30) occurred at exposure lags of two and five days, respectively. Doctor visits increased by 9.1% (95%CI: 3.2-15.4%) and 4.2% (95%CI: 1.2-7.2%) over the first week following a 10 µg/m(3) increase in NO(2) concentration in the COPD and chronic bronchitis subgroups, respectively. The percent increase in the COPD subgroup was significantly greater (p <0.05) when compared with the healthy subgroup. Observed findings were similar for TSP. CONCLUSIONS Respiratory problems leading to a doctor visit, associated with an increase in exposure to NO(2) and TSP, may have a faster dynamic in individuals with COPD.
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Ortega-Villaizan M, Martinez-Lopez A, Garcia-Valtanen P, Chico V, Perez L, Coll JM, Estepa A. Ex vivo transfection of trout pronephros leukocytes, a model for cell culture screening of fish DNA vaccine candidates. Vaccine 2012; 30:5983-90. [PMID: 22824344 DOI: 10.1016/j.vaccine.2012.07.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 06/28/2012] [Accepted: 07/08/2012] [Indexed: 11/24/2022]
Abstract
DNA vaccination opened a new era in controlling and preventing viral diseases since DNA vaccines have shown to be very efficacious where some conventional vaccines have failed, as it occurs in the case of the vaccines against fish novirhabdoviruses. However, there is a big lack of in vitro model assays with immune-related cells for preliminary screening of in vivo DNA vaccine candidates. In an attempt to solve this problem, rainbow trout pronephros cells in early primary culture were transfected with two plasmid DNA constructions, one encoding the green fluorescent protein (GFP) and another encoding the viral haemorrhagic septicaemia virus (VHSV) glycoprotein G (G(VHSV)) - the only viral antigen which has conferred in vivo protection. After assessing the presence of GFP- and G(VHSV)-expressing cells, at transcription and protein levels, the immune response in transfected pronephros cells was evaluated. At 24h post-transfection, G(VHSV) up-regulated migm and tcr transcripts expression, suggesting activation of B and T cells, as well, a high up-regulation of tnfα gene was observed. Seventy-two hours post-transfection, we detected the up-regulation of mx and tnfα genes transcripts and Mx protein which correlated with the induction of an anti-VHSV state. All together we have gathered evidence for successful transfection of pronephros cells with pAE6G, which correlates with in vivo protection results, and is less time-consuming and more rapid than in vivo assays. Therefore, this outcome opens the possibility to use pronephros cells in early primary culture for preliminary screening fish DNA vaccines as well as to further investigate the function that these cells perform in fish immune response orchestration after DNA immunisation.
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Abstract
OBJECTIVE The objective of this review was to elucidate the relationship between VaD and various nutritional factors based on epidemiological studies. BACKGROUND Vascular dementia (VaD) is the second most common type of dementia. The prevalence of VaD continues to increase as the US population continues to grow and age. Currently, control of potential risk factors is believed to be the most effective means of preventing VaD. Thus, identification of modifiable risk factors for VaD is crucial for development of effective treatment modalities. Nutrition is one of the main modifiable variables that may influence the development of VaD. METHODS A systematic review of literature was conducted using the PubMed, Web of Science, and CINAHL Plus databases with search parameters inclusive of vascular dementia, nutrition, and vascular cognitive impairment (VCI). RESULTS Fourteen articles were found that proposed a potential role of specific nutritional components in VaD. These components included antioxidants, lipids, homocysteine, folate, vitamin B12, and fish consumption. Antioxidants, specifically Vitamin E and C, and fatty fish intake were found to be protective against VaD risk. Fried fish, elevated homocysteine, and lower levels of folate and vitamin B12 were associated with increased VaD. Evidence for dietary lipids was inconsistent, although elevated midlife serum cholesterol may increase risk, while late-life elevated serum cholesterol may be associated with decreased risk of VaD. CONCLUSION Currently, the most convincing evidence as to the relationship between VaD and nutrition exists for micronutrients, particularly Vitamin E and C. Exploration of nutrition at the macronutrient level and additional long term prospective cohort studies are warranted to better understand the role of nutrition in VaD disease development and progression. At present, challenges in this research include limitations in sample size, which was commonly cited. Also, a variety of diagnostic criteria for VaD were employed in the studies reviewed, indicating the need for constructing a correct nosological definition of VaD for consistency and conformity in future studies and accurate clinical diagnosis of VaD.
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Metzger W, Magris M, Vivas-Martínez S, Giron A, Brooms J, Villalobos N, Cruz L, Peña Pimentel F, Perez L, España R. High dose artesunate in combination with mefloquine: pharmacovigilance in the Venezuelan Amazon. Trans R Soc Trop Med Hyg 2012; 106:196-8. [DOI: 10.1016/j.trstmh.2011.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 11/10/2011] [Accepted: 11/10/2011] [Indexed: 10/14/2022] Open
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Field T, Perkins J, Nishori T, Pidala J, Fernandez H, Tomblyn M, Kharfan-Dabaja M, Perez L, Komrokji R, Lancet J, Kim J, Ayala E, Alsina M, Ochoa-Bayona JL, Locke F, Betts B, List A, Anasetti C. Prospective Trial of Pre-Transplant 5-Azacitidine on Hematopoietic Cell Transplantation Outcomes for Myelodysplastic Syndrome and CMML. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pidala J, Kim J, Schell M, Hillgruber R, Nye V, Ayala E, Alsina M, Betts B, Bookout R, Fernandez H, Field T, Locke F, Nishihori T, Ochoa J, Perez L, Perkins J, Shapiro J, Tate C, Tomblyn M, Anasetti C. Effectiveness of Unrelated Donor Allogeneic Hematopoietic Cell Transplantation: Results of a Donor Vs. No Donor Analysis. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Amar J, Serino M, Lange C, Chabo C, Iacovoni J, Mondot S, Lepage P, Klopp C, Mariette J, Bouchez O, Perez L, Courtney M, Marre M, Klopp P, Lantieri O, Doré J, Charles MA, Balkau B, Burcelin R. Involvement of tissue bacteria in the onset of diabetes in humans: evidence for a concept. Diabetologia 2011; 54:3055-61. [PMID: 21976140 DOI: 10.1007/s00125-011-2329-8] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 09/09/2011] [Indexed: 10/17/2022]
Abstract
AIMS/HYPOTHESIS Evidence suggests that bacterial components in blood could play an early role in events leading to diabetes. To test this hypothesis, we studied the capacity of a broadly specific bacterial marker (16S rDNA) to predict the onset of diabetes and obesity in a general population. METHODS Data from an Epidemiological Study on the Insulin Resistance Syndrome (D.E.S.I.R.) is a longitudinal study with the primary aim of describing the history of the metabolic syndrome. The 16S rDNA concentration was measured in blood at baseline and its relationship with incident diabetes and obesity over 9 years of follow-up was assessed. In addition, in a nested case-control study in which participants later developed diabetes, bacterial phylotypes present in blood were identified by pyrosequencing of the overall 16S rDNA gene content. RESULTS We analysed 3,280 participants without diabetes or obesity at baseline. The 16S rDNA concentration was higher in those destined to have diabetes. No difference was observed regarding obesity. However, the 16S rDNA concentration was higher in those who had abdominal adiposity at the end of follow-up. The adjusted OR (95% CIs) for incident diabetes and for abdominal adiposity were 1.35 (1.11, 1.60), p = 0.002 and 1.18 (1.03, 1.34), p = 0.01, respectively. Moreover, pyrosequencing analyses showed that participants destined to have diabetes and the controls shared a core blood microbiota, mostly composed of the Proteobacteria phylum (85-90%). CONCLUSIONS/INTERPRETATION 16S rDNA was shown to be an independent marker of the risk of diabetes. These findings are evidence for the concept that tissue bacteria are involved in the onset of diabetes in humans.
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Lumbreras B, Gonzalez-Alvarez I, Vilar J, Parker LA, Pastor MA, Gomez-Saez N, Lorente F, Domingo ML, Perez L, Picazo N. P1-489 Prevalence and determinants of solitary pulmonary nodules detected using thoracic imaging tests during routine clinical practice. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976g.77] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Amar J, Serino M, Lange C, Chabot C, Bouchez O, Mariette J, Perez L, Courntey M, Marre M, Klopp P, Lantieri O, Dore J, Charles MA, Balkau B, Burcelin R. PREDICTIVE VALUE OF BLOOD BACTERIAL DNA ON THE ONSET OF TYPE 2 DIABETES FROM GENERAL POPULATION. J Hypertens 2011. [DOI: 10.1097/00004872-201106001-00288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pajares B, Trigo Perez JM, Toledo MD, Alvarez M, Perez-Villa L, Gonzalez-Hermoso C, Rueda A, Medina JA, Jimenez B, Jerez JM, Perez L, Alba E. Human papillomavirus (HPV)–related head and neck squamous cell carcinoma (HNSCC) and outcome after treatment with epidermal growth factor receptor inhibitors (EGFR inhib) plus radiotherapy (RT) versus conventional chemotherapy (CT) plus RT. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.5528] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Perez L, Kunzli N. Saharan dust: no reason to exempt from science or policy. Occup Environ Med 2011; 68:389-90. [DOI: 10.1136/oem.2010.063990] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Field T, Perkins J, Nishihori T, Pidala J, Tomblyn M, Fernandez H, Perez L, Kharfan-Dabaja M, Komrokji R, Lancet J, Ayala E, Alsina M, Ochoa L, Kim J, List A, Anasetti C. Hematopoietic Stem Cell Transplantation for Myelodysplastic Syndrome and Chronic Myelomonocytic Leukemia: Comparison of Survival in Patients With an Available Donor Compared to Patients Without a Donor in Patients Up to Age 75. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pidala J, Tomblyn M, Nishihori T, Perkins J, Field T, Ayala E, Alsina M, Ochoa L, Locke F, Perez L, Fernandez H, Anasetti C. Sirolimus Induces Complete Remission of Acute Graft-Versus-Host Disease Without Systemic Glucocorticoids. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Perkins J, Fields T, Kim J, Fernandez H, Perez L, Ayala E, Kharfan-Dabaja M, Tomblyn M, Sullivan D, Anasetti C. Maximally Tolerated Busulfan Area Under the Concentration-Time Curve (AUC) in Combination With Fludarabine as Conditioning Prior to Allogeneic Hematopoietic Cell Transplantation. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pidala J, Tomblyn M, Nishihori T, Perkins J, Field T, Ayala E, Bookout R, Conwell M, Perez L, Ochoa L, Alsina M, Shapiro J, Tate C, Locke F, Fernandez H, Anasetti C. ATG for the Prevention of Severe Acute Graft-Versus-Host Disease in Mismatched Unrelated Donor Hematopoietic Cell Transplantation. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Field T, Perkins J, Pidala J, Nishihori T, Tomblyn M, Fernandez H, Perez L, Karfan-Dabaja M, Komrokji R, Lancet J, Ayala E, Alsina M, Ochoa L, Kim J, List A, Anasetti C. Prospective Trial of Pre-Transplant 5-Azacitidine on Hematopoietic Cell Transplantation Outcomes for Myelodysplastic Syndrome and CMML. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Perkins J, Field T, Kim J, Kharfan-Dabaja MA, Ayala E, Perez L, Fernandez H, Fancher K, Tate C, Shaw LM, Milone MC, Gardiner JA, Miller S, Anasetti C. Pharmacokinetic targeting of i.v. BU with fludarabine as conditioning before hematopoietic cell transplant: the effect of first-dose area under the concentration time curve on transplant-related outcomes. Bone Marrow Transplant 2010; 46:1418-25. [PMID: 21132026 DOI: 10.1038/bmt.2010.315] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We used pharmacokinetic (PK) targeting of BU in 145 consecutive patients treated with fludarabine and i.v. BU. BU was given once daily at 130 mg/m(2) per day on days 1 and 2; doses for days 3 and 4 were adjusted in 92 patients (63%) to an average daily area under the concentration-time curve (AUC) of 5300 μM/min. In the remaining 53 patients, the first-dose AUC was within the target range and no dosing adjustments were required. First-dose AUC, maximum concentration and clearance were not correlated with age, race, ethnicity, performance status, or hematopoietic cell transplant comorbidity index. Women had higher clearance than men (median 2.9 vs 2.5 mL/min/kg; P=0.001). BU toxicities were not associated with first-dose AUC or any other PK parameter measured. First-dose BU AUC was not associated with non-relapse mortality (NRM) or survival, but higher AUC was predictive of relapse. We did not find an increased risk of toxicity or NRM in patients with high first-dose AUC presumably because of the dose adjustment. We conclude that PK targeting of BU as described here provides a simple, safe and effective method of delivering high BU doses before transplantation in a wide variety of patients.
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Ortega-Villaizan M, Chico V, Martinez-Lopez A, Falco A, Perez L, Coll JM, Estepa A. In vitro analysis of the factors contributing to the antiviral state induced by a plasmid encoding the viral haemorrhagic septicaemia virus glycoprotein G in transfected trout cells. Vaccine 2010; 29:737-43. [PMID: 21095250 DOI: 10.1016/j.vaccine.2010.11.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Revised: 11/06/2010] [Accepted: 11/08/2010] [Indexed: 11/15/2022]
Abstract
We have found out that transfection of the RTG-2 cell line with the viral haemorrhagic septicaemia virus (VHSV) glycoprotein G (G(VHSV))-coding plasmid induces an anti-VHSV state, similar to that induced by poly I:C. Taking the advantage of the constitutive expression of toll-like receptor 9 gene (tlr9) in RTG-2 cells, we have investigated whether this antiviral state was induced by the cytosine-phosphodiester-guanine (CpG) motifs present in the plasmid DNA, by the endogenous expression of G(VHSV) protein or by both elements. For that, we have analysed the expression profile of the rainbow trout tlr9 and several genes related to TLR9-mediated immune response in the absence or presence of a lysosomotropic drug that specifically blocks TLR9-CpG DNA interaction. The results suggested that the high levels of cell protection conferred by a plasmid encoding G(VHSV) gene are due to G(VHSV) rather than to the CpG motifs within plasmid DNA. Therefore, plasmid DNA might not play a key role in the immune response elicited by DNA vaccines or perhaps other receptors instead TLR9 could be implicated in CpG motifs recognition and signalling. In addition, since RTG-2 cells express tlr9 gene, this cell line could be a good tool for screening TLR9 agonists, such as the immunomodulatory oligonucleotides (IMOs), as fish DNA vaccine adjuvants.
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Riebe B, Karas CS, Bagan B, Baig MN, Hallock A, Hamilton B, Ang CL, Tay K, Megyesi J, Fisher B, Watling C, MacDonald D, Bauman G, Momin E, Adams H, Quinones-Hinojosa A, Ruda R, Bertero L, Picco E, Trevian E, Tarenzi L, Donadio M, Airoldi M, Bertetto O, Mocellini C, Soffietti R, McCarthy BJ, Dolecek TA, Johnson DR, Olson JE, Vierkant RA, Hammack JE, Wang AH, Folsom AR, Virnig BA, Cerhan JR, Scheurer ME, Etzel CJ, Wefel JS, Liu Y, Liang FW, El-Zein R, Meyers CA, Bondy ML, Davis F, Dolecek TA, McCarthy BJ, Hottinger AF, Perez L, Usel M, Neyroud-Caspar I, Bouchardy C, Dietrich PY, Jho DJ, Eltantawy MH, Sekula R, Aziz K, Lee SY, Slagle-Webb B, Sheehan JM, Connor JR, Elena P, Andrew L, Anne R, Katherine P, Lisa D, Lai RK, Ferris J, Florendo E, McCoy L, Rice T, Ottman R, Neugut AI, Wiencke J, Wiemels J, Wrensch M, Yovino S, Hadley C, Kwok Y, Eisenberg H, Regine WF, Feigenberg S, Megyesi JF, Haji F, Patel Y, Ang LC, Lachance DH, Wrensch M, Il'yasova D, Decker P, Johnson D, Xiao Y, Rynearson A, Fink S, Kosel M, Yang P, Fridley B, Wiemels J, Wiencke J, Ali-Osman F, Davis F, Kollmeyer T, Buckner J, O'Neill B, Jenkins R. Epidemiology. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Amar J, Mulazzi I, Perez L, Brillac T. [Guidelines on hypertension management]. REVUE MEDICALE SUISSE 2010; 6:1700-1708. [PMID: 21294304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The purpose of this review was to consider the Reappraisal of European guidelines on hypertension management published in 2009 in the light of 2005 French national guidelines and of recently published large randomized trials. We analyzed successively the recommendations dealing with assessment of global cardiovascular risk, hypertension treatment and blood pressure goals; we focused on patients at high cardiovascular risk: diabetic patients and patients with coronary disease and elderly population.
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Pidala J, Kim J, Anasetti C, Kharfan-Dabaja MA, Field T, Perkins J, Ayala E, Perez L, Fernandez H. Targeted i.v. BU and fludarabine (t-i.v. BU/Flu) provides effective control of AML in adults with reduced toxicity. Bone Marrow Transplant 2010; 46:641-9. [PMID: 20711242 DOI: 10.1038/bmt.2010.190] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Myeloablative doses of BU and fludarabine followed by allogeneic hematopoietic cell transplantation offer effective therapy for AML. We anticipated that pharmacokinetic targeting of i.v. BU to 5300 μM/L min/day × 4 (targeted i.v. BU and fludarabine (t-i.v. BU/Flu)) would limit nonrelapse mortality (NRM) in adults up to 70 years of age. We assessed the safety and efficacy of t-i.v. BU/Flu in a series of 100 adults (median age 48, range 22-69 years) with AML in the first CR (CR1) with high risk of treatment failure (n=49), second CR (CR2, n=25), relapsed disease (REL, n=9), primary induction failure (PIF, n=16) and untreated (n=1). NRM was 3% at 100 days and 15% at 1 year. The cumulative incidence of relapse was 30.6% for CR1, 41.7% for CR2, 55.6% for REL and 58.6% for PIF. OS for primary AML in CR1 was 66% (95% confidence interval (CI): 46-80%) at 1 year, and 62% (95% CI: 42-77%) at 2 years. On multivariable modeling, remission status, moderate/severe chronic GVHD and day-90 BM chimerism ≥90% predicted improved OS. Importantly, there was no effect of age. t-i.v. BU/Flu provides effective disease control with encouraging NRM in patients up to age of 70 years.
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Font A, Taron M, Gago JL, Costa C, Sánchez JJ, Carrato C, Mora M, Celiz P, Perez L, Rodríguez D, Gimenez-Capitan A, Quiroga V, Benlloch S, Ibarz L, Rosell R. BRCA1 mRNA expression and outcome to neoadjuvant cisplatin-based chemotherapy in bladder cancer. Ann Oncol 2010; 22:139-144. [PMID: 20603439 DOI: 10.1093/annonc/mdq333] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND neoadjuvant chemotherapy has shown a modest benefit in muscle-invasive bladder cancer patients; however, the subset of patients most likely to benefit has not been identified. BRCA1 plays a central role in DNA repair pathways and low BRCA1 expression has been associated with sensitivity to cisplatin and longer survival in lung and ovarian cancer patients. PATIENTS AND METHODS we assessed BRCA1 messenger RNA expression levels in paraffin-embedded pre-treatment tumor samples obtained by transurethral resection from 57 patients with locally advanced bladder cancer subsequently treated with neoadjuvant cisplatin-based chemotherapy. BRCA1 levels were divided into terciles and correlated with pathological response and survival. RESULTS a significant pathological response (pT0-1) was attained in 66% (24 of 39) of patients with low/intermediate BRCA1 levels compared with 22% (4 of 18) of patients with high BRCA1 levels (P = 0.01). Median survival was 168 months in patients with low/intermediate levels and 34 months in patients with high BRCA1 levels (P = 0.002). In the multivariate analysis for survival, only BRCA1 expression levels and lymphovascular invasion emerged as independent prognostic factors. CONCLUSIONS our data suggest that BRCA1 expression may predict the efficacy of cisplatin-based neoadjuvant chemotherapy and may help to customize therapy in bladder cancer patients.
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Straight TM, Merrill G, Perez L, Livezey J, Robinson B, Lodes M, Suciu D, Anderson B. A novel electrochemical device to differentiate pandemic (H1N1) 2009 from seasonal influenza. Influenza Other Respir Viruses 2010; 4:73-9. [PMID: 20167047 PMCID: PMC5779286 DOI: 10.1111/j.1750-2659.2009.00123.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND One of the challenges of the recent pandemic (H1N1) 2009 influenza outbreak was to differentiate the virus from seasonal influenza when confronting clinical cases. The determination of the virus has implications on treatment choice, and obvious epidemiologic significance. OBJECTIVES We set out to apply a novel electrochemical device to samples derived from clinical cases of pandemic (H1N1) 2009 influenza to examine the ability of the device to differentiate these samples from cases of seasonal influenza. PATIENTS/METHODS An IRB approved protocol allowed for the use of original nasal wash samples from 24 confirmed human cases pandemic (H1N1) 2009 influenza. Clinical samples from cases of seasonal influenza (Influenza A/H1N1, A/H3N2, and B) were included as controls. Nucleic acids were extracted and samples examined by the ElectraSense Influenza A assay (CombiMatrix, Inc). Samples were also examined by RT-PCR or Luminex assays as a comparator. RESULTS AND CONCLUSIONS The ElectraSense Influenza A assay correctly identified 23 of 24 samples of laboratory-confirmed pandemic (H1N1) 2009 Influenza. The assay correctly identified all samples of influenza A/H1N1 and A/H3N2, and differentiated these from pandemic (H1N1) 2009 Influenza in all cases. The ElectraSense Influenza A assay proved to be a useful assay to quickly and accurately differentiate pandemic (H1N1) 2009 influenza from seasonal influenza.
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Field T, Perkins J, Kim J, Kharfan-Dabaja M, Fenandez H, Perez L, Lancet J, Komrokji R, Ochoa-Bayona L, Alsina M, List A, Anasetti C. Evaluation Of Patients With Myelodysplastic Syndrome (MDS) Up To Age Seventy-Five, Referred For Allogeneic Hematopoietic Cell Transplant (HCT) Including Donor Availability And HCT Outcomes. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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76
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Pidala J, Kim J, Alsina M, Ayala E, Field T, Fernandez H, Kharfan-Dabaja M, Ochoa L, Perez L, Perkins J, Tomblyn M, Anasetti C. Dysglycemia Following Glucocorticoid Therapy For Acute Graft Vs. Host Disease Adversely Affects Transplantation Outcomes. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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77
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Falco A, Ortega-Villaizan M, Chico V, Brocal I, Perez L, Coll JM, Estepa A. Antimicrobial peptides as model molecules for the development of novel antiviral agents in aquaculture. Mini Rev Med Chem 2009; 9:1159-64. [PMID: 19817709 DOI: 10.2174/138955709789055171] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Antimicrobial peptides (AMPs) are one of the components of the non-specific immune system that operate first lines of protection in many animal species including fish. They exert broad-spectrum antimicrobial activity, apart from many other potential roles in innate immunity, and represent a promising class of antiviral agents. Recent advances in understanding the mechanisms of their antiviral action(s) indicate that they have a dual role in antiviral defence, acting not only directly on the virion but also on the host cell. Despite the acute problems of viral diseases and restrictions in using chemicals in aquaculture, few but successful attempts to assess the antiviral activities of fish AMPs have been reported. This review focuses on the antiviral activities and mechanisms of action of some AMPs, and their potential relevance in the aquaculture industry, one of the most important sources of fishery products in the near future. It is a matter of notable concern to understand whether the AMPs can be used as model molecules for designing antiviral drugs that might help to solve the problems with viruses in the fish farming industry worldwide. In addition, because fish rely more heavily on their innate immune defences than mammals, they might constitute a potential rich source of antiviral compounds for fighting against mammalian viral infections.
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Pidala J, Kim J, Perkins J, Field T, Fernandez H, Perez L, Ayala E, Kharfan-Dabaja M, Anasetti C. Mycophenolate mofetil for the management of steroid-refractory acute graft vs host disease. Bone Marrow Transplant 2009; 45:919-24. [DOI: 10.1038/bmt.2009.252] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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79
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Perez L, Medina-Ramón M, Künzli N, Alastuey A, Pey J, Pérez N, Garcia R, Tobias A, Querol X, Sunyer J. Size fractionate particulate matter, vehicle traffic, and case-specific daily mortality in Barcelona, Spain. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2009; 43:4707-4714. [PMID: 19673255 DOI: 10.1021/es8031488] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Recent epidemiological research suggests that short-term effects of particle matter (PM) in urban areas may preferentially be driven by fine fractions. Questions remain concerning the adversehealth effects of coarse particles generated by noncombustion, traffic-related processes and the mechanism of action of PM. Using a time-stratified case-crossover design, we investigated the association between three independent size fractions, coarse (PM10-2.5), intermodal (PM2.5-1), and very fine PMs (PM1), and three health outcomes, respiratory, cardiovascular, and cerebrovascular mortality in Barcelona, Spain, during the period of March 2003-December 2005. Using existing data, we examined the chemical composition of each fraction to explore the effects of PM from different sources and the mechanisms of action. We found that increased levels of PM, and PM10-2.5 were associated with increased levels of cardiovascular and cerebrovascular mortality at lag 1 and lag 2. At lag 1, the odds ratio (OR) for a 1 microg/m3 increase in PM1 was 1.028 [95% confidence interval (CI), 1.000-1.058] for cardiovascular mortality and 1.063 (95% CI, 1.004-1.124) for cerebrovascular mortality. At lag 1, the odds ratio per a 10 microg/ m3 increase of PM10-2.5 was 1.059 (95% CI, 1.026-1.094) for cardiovascular mortality and 1.098 (95% CI, 1.030-1.171) for cerebrovascular mortality. Association with respiratory mortality was only detected for PM2.5-1 at lag 2 (OR, 1.206 per a 10 microg/ m3 increase; 95% CI, 1.028-1.416). Chemical composition data showed that PM in Barcelona was generated in a large proportion by vehicle traffic. Vehicle traffic PM, generated by combustion and noncombustion processes, should be considered in air pollution mitigation strategies in urban areas.
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Field T, Perkins J, Huang Y, Kharfan-Dabaja MA, Alsina M, Ayala E, Fernandez HF, Janssen W, Lancet J, Perez L, Sullivan D, List A, Anasetti C. 5-Azacitidine for myelodysplasia before allogeneic hematopoietic cell transplantation. Bone Marrow Transplant 2009; 45:255-60. [DOI: 10.1038/bmt.2009.134] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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81
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Künzli N, Perez L. Evidence based public health - the example of air pollution. Swiss Med Wkly 2009; 139:242-50. [PMID: 19156552 DOI: 10.4414/smw.2009.12246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Evidence Based Medicine (EBM) has become a common paradigm in medicine. The notion that action should be based on scientific evidence also applies to public health. The assessment of evidence and the application of evidence based action is a challenge both in EBM and public health. The focus of this article is Evidence Based Public Health (EBPH). We use the issue of air pollution related health as an educational example for EBPH.
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Ortega-Villaizan M, Chico V, Falco A, Perez L, Coll JM, Estepa A. The rainbow trout TLR9 gene and its role in the immune responses elicited by a plasmid encoding the glycoprotein G of the viral haemorrhagic septicaemia rhabdovirus (VHSV). Mol Immunol 2009; 46:1710-7. [PMID: 19272649 DOI: 10.1016/j.molimm.2009.02.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2008] [Revised: 02/02/2009] [Accepted: 02/09/2009] [Indexed: 10/21/2022]
Abstract
The aim of this work was to improve the knowledge about the factors contributing to the immunogenicity of the DNA vaccines based on the viral haemorrhagic septicaemia virus glycoprotein G gene, through identifying the rainbow trout Toll-like receptor 9 (Omtlr9) gene that curiously contains an insertion of an incomplete transposon at the 5'-end of the third intron. Concerning the role played by this receptor in the fish innate defence, in response to the injection of a plasmid (pAE6) encoding or not the viral haemorrhagic septicaemia rhabdovirus (VHSV) glycoprotein G gene (pAE6-G), the presence of Omtlr9 transcripts remained unchanged in the fish secondary lymphoid organs while was highly increased at the injection site (muscle). The level of Omtlr9 transcripts correlated with those of cluster of differentiation 83 (cd83) and CXC chemokine receptor 4 (cxcr4), suggesting the recruitment of dendritic-like cells into the muscle as the source of Omtlr9 expressing cells. Transcription of tumour necrosis factor-alpha (tnf alpha) and interleukin-6 (il6) genes, two cytokines directly related to TLR9 induction with unmethylated CpG oligodeoxynucleotides (CpG ODNs), was solely observed in head kidney and spleen of the fish immunised with pAE6-G. Thus, the glycoprotein G of VHSV could be more implicated in triggering the pathways for TNF-alpha and IL6 production than the recognition of the unmethylated CpG motifs of the plasmid backbone by OmTLR9. Therefore, our results seem to indicate that OmTLR9-mediated recognition of plasmid DNA is not the key of the innate immune recognition of the adjuvant elements of fish DNA vaccines.
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Chico V, Ortega-Villaizan M, Falco A, Tafalla C, Perez L, Coll J, Estepa A. The immunogenicity of viral haemorragic septicaemia rhabdovirus (VHSV) DNA vaccines can depend on plasmid regulatory sequences. Vaccine 2009; 27:1938-48. [DOI: 10.1016/j.vaccine.2009.01.103] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2008] [Revised: 01/14/2009] [Accepted: 01/22/2009] [Indexed: 11/25/2022]
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84
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Perez L, Ruidavets JB, Drouet L, Chamontin B, Ferrieres J, Amar J. I021 Impact du polymorphisme génétique C(-260)T du CD14 sur la pression pulsée en fonction d’autres facteurs de risque cardiovasculaires : etude populationnelle transversale à partir du registre monica. Arch Cardiovasc Dis 2009. [DOI: 10.1016/s1875-2136(09)72355-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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85
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Perkins J, Alsina M, Anasetti C, Ayala E, Fernandez H, Kharfan-Dabaja M, Ochoa-Bayona L, Perez L, Raychaudhuri J, Sullivan D, Kim J, Schell M, Field T. A Randomized, Controlled Trial of Graft-Versus-Host Disease (GVHD) Prophylaxis Comparing Tacrolimus and Mycophenolate Mofetil to Tacrolimus and Methotrexate: Analysis of GVHD, Relapse and Survival. Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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86
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Raychaudhuri J, Perkins J, Alsina M, Ochoa-Bayona J, Fernandez H, Sullivan D, Dalton W, Kharfan-Dabaja M, Field T, Ayala E, Perez L, Harris J, Janssen W, Tate C, Anasetti C. Long–Term Survival of Allogeneic Transplantation(Allo SCT) In Selected Patients with Multiple Myeloma (MM): Disease Free Survival at Two Years May Indicate Long Term Survival. Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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87
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Kharfan-Dabaja M, Chavez J, Fernandez-Vertiz E, Yu D, Zhu W, Perkins J, Field T, Ayala E, Fernandez H, Alsina M, Perez L, Raychaudhuri J, Ochoa-Bayona J, Brand L, Sullivan D, Anasetti C. Hypoalbuminemia (< 3.0 g/dl) and Poor Karnofsky Performance (KPS<80) at Day +90 Are Independent Predictors of Worse Non-Relapse Survival (NRS) and Overall Survival (OS) in Adult Allogeneic Hematopoietic Cell Transplantation (allo-HCT) Recipients: Results of a Multivariable Analysis. Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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88
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Anasetti C, Santarone S, Alsina M, Ayala E, Field T, Kharfan-Dabaja M, Ochoa L, Perez L, Perkins J, Raychaudhuri J, Sullivan D, Fernandez H. Safety and Efficacy of Fludarabine and PK-Targeted Intravenous Busulfan Before Allografting for Adult ALL. Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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89
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Abgueguen P, Verdon R, Rabier V, Roblot F, Perez L, Michelet C. R-11 Les formes systémiques de maladie des griffes du chat. Med Mal Infect 2008. [DOI: 10.1016/s0399-077x(08)73224-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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90
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Kharfan-Dabaja M, Tate C, Perkins J, Fernandez H, Field T, Ayala E, Perez L, Raychaudhuri J, Alsina M, Ochoa-Bayona L, Sullivan D, Brand L, Poling W, Anasetti C. 330: Rituximab is Feasible to Administer to Allograft Recipients with Advanced CD20+ Malignancies and does not Affect Timely Hematopoietic Engraftment. Biol Blood Marrow Transplant 2008. [DOI: 10.1016/j.bbmt.2007.12.340] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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91
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Fernandez H, Henao-Uribe A, Poling W, Chavez J, Alsina M, Ayala E, Field T, Kharfan-Dabaja M, Perez L, Raychaudhuri J, Ochoa-Bayona L, Anasetti C. 156: Treatment of Myeloid Malignancies in Elderly Patients with Fludarabine and Targeted Busulfan (t-Bu) and Allogeneic Hematopoietic Cell Transplantation (HCT). Biol Blood Marrow Transplant 2008. [DOI: 10.1016/j.bbmt.2007.12.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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92
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Lanternier F, Dalban C, Perez L, Bricaire F, Costagliola D, Caumes E. Tolerability of anti-tuberculosis treatment and HIV serostatus. Int J Tuberc Lung Dis 2007; 11:1203-1209. [PMID: 17958982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
SETTING Tuberculosis (TB) is frequent in human immunodeficiency virus (HIV) infected patients, but its treatment is hampered by adverse events and paradoxical reactions. OBJECTIVE To examine the impact of HIV infection and other factors on the risk and spectrum of adverse events related to anti-tuberculosis treatment in a prospective cohort study conducted between January 2003 and August 2004. RESULTS Of 105 patients treated for TB, 30 were HIV-infected. The overall incidence of adverse events was 122.5 +/- 18.5 per 100 patient-years (py) and the incidence of severe adverse events was 45.2 +/- 11.3/100 py. Age >50 years (OR 2.2, 95%CI 1.01-4.8, P = 0.046) and HIV infection (OR 3.9, 95%CI 2.1-7.5, P < 0.001) were independently associated with a higher risk of adverse events. Hepatitis (30.5/100 py) and neuropathy (28.6/100 py) were the most frequent adverse events. Hepatitis C virus infection was associated with hepatitis (OR 4.2, 95%CI 1.2-15.0, P = 0.028) and neuropathy with HIV infection (OR 3.8, 95%CI 1.1-13.7, P = 0.040). CONCLUSION Adverse reactions to anti-tuberculosis drugs are frequent. HIV infection and age >50 years are factors associated with such reactions, while hepatitis C virus infection is a risk factor for hepatitis.
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Falco A, Chico V, Marroquí L, Perez L, Coll JM, Estepa A. Expression and antiviral activity of a beta-defensin-like peptide identified in the rainbow trout (Oncorhynchus mykiss) EST sequences. Mol Immunol 2007; 45:757-65. [PMID: 17692376 DOI: 10.1016/j.molimm.2007.06.358] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2007] [Revised: 06/26/2007] [Accepted: 06/29/2007] [Indexed: 01/13/2023]
Abstract
The in silico identification of a beta-defensin-like peptide sequence (omBD-1) in the rainbow trout (Oncorhynchuss mykiss) database of salmonid EST is reported here. We have studied the transcript expression of this beta-defensin-like sequence in different organs and expressed the recombinant peptide in a fish cell line. Finally, we have demonstrated the in vitro antiviral activity of the recombinant trout beta-defensin-like peptide against viral haemorrhagic septicaemia rhabdovirus (VHSV), one of the most devastating viruses for worldwide aquaculture. Thus, the resistance to VHSV infection of EPC cells transfected with pMCV 1.4-omBD-1 has been shown. Since EPC cells transfected with omBD-1 produced acid and heat stable antiviral activity and up regulation of Mx, a type I IFN-mediated mechanism of antiviral action is suggested. To our knowledge, this is the first report showing biological activity of a beta-defensin-like peptide from any fish.
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94
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Falco A, Mas V, Tafalla C, Perez L, Coll JM, Estepa A. Dual antiviral activity of human alpha-defensin-1 against viral haemorrhagic septicaemia rhabdovirus (VHSV): inactivation of virus particles and induction of a type I interferon-related response. Antiviral Res 2007; 76:111-23. [PMID: 17655941 DOI: 10.1016/j.antiviral.2007.06.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2007] [Revised: 06/11/2007] [Accepted: 06/12/2007] [Indexed: 12/22/2022]
Abstract
It is well known that human alpha-defensin-1, also designated as human neutrophil peptide 1 (HNP1), is a potent inhibitor towards several enveloped virus infecting mammals. In this report, we analyzed the mechanism of the antiviral action of this antimicrobial peptide (AMP) on viral haemorrhagic septicaemia virus (VHSV), a salmonid rhabdovirus. Against VHSV, synthetic HNP1 possesses two antiviral activities. The inactivation of VHSV particles probably through interfering with VHSV-G protein-dependent fusion and the inhibition of VHSV replication in target cells by up-regulating genes related to the type I interferon (IFN) response, such as Mx. Neither induction of IFN-stimulated genes (ISGs) by HNP1 nor their antiviral activity against fish rhabovirus has been previously reported. Therefore, we can conclude that besides to acting as direct effector, HNP1 acts across species and can elicit one of the strongest antiviral responses mediated by innate immune system. Since the application of vaccine-based immunization strategies is very limited, the used of chemicals is restricted because of their potential harmful impact on the environment and no antimicrobial peptides from fish that exhibit both antiviral and immunoenhancing capabilities have been described so far, HNP1 could be a model molecule for the development of antiviral agents for fish. In addition, these results further confirm that molecules that mediate the innate resistance of animals to virus may prove useful as templates for new antivirals in both human and animal health.
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95
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Rosell R, Jassem E, Skrzypski M, Taron M, Mendez P, Perez L, Szymanowska A, Rzyman W, Gulida G, Jassem J. Increased BRCA1 mRNA: An independent prognostic variable in completely resected chemo-naive non-small cell lung cancer (NSCLC) patients (p). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.7551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7551 Background: Following surgical resection in operable NSCLC, 5-year survival is 60% in stage I, 39% in stage IIB and 23% in stage IIIA, with relapse commonly as distant metastases. The average benefit of adjuvant chemotherapy is 5%, ranging from nil in stage I to 15% in stage II-IIIA. Caretaker genes involved in keeping genetic alterations to a minimum include the nucleotide excision repair genes ERCC1 and myeloid zinc finger 1 (MZF1), which mediates ERCC1 expression, and other stability genes, such as BRCA1, which control processes involving large portions of chromosomes. Thioredoxin-1 (TRX1) is a redox protein overexpressed in NSCLC that is correlated with poor prognosis, and TWIST contributes to metastasis by promoting epithelial-mesenchymal transition. Methods: In order to identify p with a high risk of relapse, we investigated the expression of these 5 transcripts in frozen resected tumors from 126 resected NSCLC p by real-time quantitative PCR. Gene expression was normalized using β-actin and 18SrRNA expression as internal references. Results: Adenocarcinoma (adeno), 33 p; squamous cell carcinoma (SCC), 93 p. Stage: IA, 18 p; IB, 53 p; IIB, 33 p; IIIA, 22 p. Tumoral transcript expression with β-actin: ERCC1, 1.23; MZF1, 0.53; BRCA1, 3.65; TRX1, 1.82; TWIST, 7.75. A strong correlation was observed between the expression of ERCC1, MZF1 and BRCA1 (P<0.001). Expression of each of the 5 transcripts was higher in SCC than in adeno (P<0.001). Median survival (MS): low ERCC1 (<1.5) = not reached (NR), high ERCC1 = 33 months (m) (P=0.21); low MZF1 (<0.5) = NR, high MZF1 = 33 m (P=0.04); low BRCA1 (<5) = NR, high BRCA1 = 22 months (m) (P=0.01); low TRX1 (<0.8) = NR, high TRX1 = 39.5 m (P=0.02); no differences in MS according to levels of TWIST. In a multivariate Cox model for survival, BRCA1 and stage emerged as independent prognostic variables ( Table ). Conclusion: Increased BRCA1 is associated with shorter survival, and BRCA1 assessment could be useful for customizing adjuvant chemotherapy. No significant financial relationships to disclose. [Table: see text]
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Kharfan-Dabaja M, Kumar A, Behera M, Field T, Ayala E, Perez L, Fernandez H, Anasetti C, Djulbegovic B. 95: Autologous hematopoietic cell transplantation (auto-HCT) in chronic lymphocytic leukemia (CLL). Biol Blood Marrow Transplant 2007. [DOI: 10.1016/j.bbmt.2006.12.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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97
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Krasovec S, Ornani A, Oleastro M, Rosenzweig S, Roy A, Perez L, Campos G, Marín N, Martinez A, Mahieu C, Manfredi MJ, Sisti A, Zelazko M. Efficacy and Tolerability of an Argentine Intravenous Immunoglobulin in Pediatric Patients with Primary Immunodeficiency Diseases. J Clin Immunol 2007; 27:227-32. [PMID: 17235689 DOI: 10.1007/s10875-006-9055-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2006] [Accepted: 11/03/2006] [Indexed: 11/24/2022]
Abstract
Inmunoglobulina G Endovenosa UNC is a 5% liquid Argentine intravenous immunoglobulin obtained from South American donors. This prospective trial was designed to evaluate if the product meets the minimal efficacy requirement of the US Food and Drug Administration of <1 serious infection/subject/year as well as its safety in pediatric patients with Primary Immunodeficiency Diseases. Thirty patients under the age of 18, with well-defined Primary Immunodeficiency Diseases received Inmunoglobulina G Endovenosa UNC (330-700 mg/kg every 3-4 weeks) for 6 months. Vital signs, laboratory abnormalities, adverse events and viral tests were assessed to evaluate safety. Two serious infections occurred (pneumonia and bacteriemia). The estimated infection rate was 0.114 serious infection/subject/year (95% CI, 0.003-0.2277). Minor adverse events occurred in 5.5% of infusions; fever and headache were the most common. Neither severe adverse events, nor abnormal laboratory values were observed. All viral assessments were negative. Inmunoglobulina G Endovenosa UNC meets the minimal efficacy requirement of the US Food and Drug Administration for pediatric Primary Immunodeficiency Diseases patients and showed efficacy and safety data comparable with other data published.
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98
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Cortes O, Garcia C, Perez L, Boj J, Alcaina A. Pulp cell cultures obtained with two different methods for in vitro cytotoxicity tests. Eur Arch Paediatr Dent 2007; 7:96-9. [PMID: 17140535 DOI: 10.1007/bf03320822] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AIM To describe two different protocols for obtaining primary pulp cell cultures, one derived from explants and the other following dissociation into single cell suspension by enzyme digestion. METHODS Human pulp tissue was obtained from three healthy premolars. The harvested pulp tissue was prepared for culture using physical methods (one of the premolars) and enzyme, type XI collagenase, (the two remaining premolars). RESULTS In the case of explant based culture, only limited growth was observed in some cases. However, by enzyme digestion, after two weeks cell growth was evident, and differences in cell type were observed according to the tooth involved. CONCLUSION It has been possible to obtain abundant biological material using an enzyme digestion-based protocol for testing purposes, with low experimental variability, as all cells originated from the same individual.
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Roncalli J, Smih F, Desmoulin F, Dumonteil N, Harmancey R, Hennig S, Perez L, Pathak A, Galinier M, Massabuau P, Malet-Martino M, Senard JM, Rouet P. NMR and cDNA array analysis prior to heart failure reveals an increase of unsaturated lipids, a glutamine/glutamate ratio decrease and a specific transcriptome adaptation in obese rat heart. J Mol Cell Cardiol 2007; 42:526-39. [PMID: 17222424 DOI: 10.1016/j.yjmcc.2006.11.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2006] [Revised: 10/13/2006] [Accepted: 11/08/2006] [Indexed: 01/19/2023]
Abstract
Obesity is a risk factor for heart failure through a set of hemodynamic and hormonal adaptations, but its contribution at the molecular level is not clearly known. Therefore, we investigated the kinetic cardiac transcriptome and metabolome in the Spontaneous Hypertensive Heart Failure (SHHF) rat. The SHHF rat is devoid of leptin signaling when homozygous for a mutation of the leptin receptor (ObR) gene. The ObR-/- SHHF rat is obese at 4 months of age and prone to heart failure after 14 months whereas its lean counterpart ObR-/+ is prone to heart failure after 16 months. We used a set of rat pangenomic high-density macroarrays to monitor left ventricle cardiac transcriptome regulation in 4- and 10-month-old, lean and obese animals. Comparative analysis of left ventricle of 4- and 10-month-old lean rat revealed 222 differentially expressed genes while 4- and 10-month-old obese rats showed 293 differentially expressed genes. (1)H NMR analysis of the metabolome of left ventricular extracts displayed a global decrease of metabolites, except for taurine, and lipid concentration. This may be attributed to gene expression regulation and likely increased extracellular mass. The glutamine to glutamate ratio was significantly lower in the obese group. The relative unsaturation of lipids increased in the obese heart; in particular, omega-3 lipid concentration was higher in the 10-month-old obese heart. Overall, several specific kinetic molecular patterns act as a prelude to heart failure in the leptin signaling deficient SHHF obese rat.
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100
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Mas V, Falco A, Brocal I, Perez L, Coll JM, Estepa A. Identification of selective inhibitors of VHSV from biased combinatorial libraries of N,N′-disubstituted 2,5-piperazinediones. Antiviral Res 2006; 72:107-15. [PMID: 16730078 DOI: 10.1016/j.antiviral.2006.04.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2006] [Revised: 04/04/2006] [Accepted: 04/05/2006] [Indexed: 11/16/2022]
Abstract
A combinatorial strategy has been used to design and identify inhibitors of viral haemorrhagic septicemia virus (VHSV), a salmonid rhabdovirus of economic importance. Two libraries of N,N'-disubstituted 2,5-piperazinediones (DKP), DKP-I and DKP-II were screened for inhibition of VHSV infectivity. Among the 98 DKP-derivatives (R1-DKP-R2) screened, a novel class of VHSV in vitro inhibitors was identified. Evidences are presented showing that the selected DKP-derivatives cause dose-dependent inhibition of VHSV infectivity in the absence of cellular toxicity. Preliminary characterization of its inhibition mechanism ruled out direct inactivation of the virus (virucidal effect) or interference with early viral replication steps. Furthermore, analysis of infection foci sizes, virus titers, viral protein accumulation and presence of cell free virus derived from VHSV-infected cell cultures in the presence of DKP-derivates suggested that virus assembly/release was impaired leading to a reduced virus spread in cell culture. New DKP-derivatives with a significant higher specific activity need to be developed to start testing its possible practical use but the selected DKP-derivatives described here may contribute to their further development as well as being tools to improve our knowledge on the fish rhabdovirus infection cycle.
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