26
|
Bergua JM, Montesinos P, Martinez-Cuadrón D, Fernández-Abellán P, Serrano J, Sayas MJ, Prieto-Fernandez J, García R, García-Huerta AJ, Barrios M, Benavente C, Pérez-Encinas M, Simiele A, Rodríguez-Macias G, Herrera-Puente P, Rodríguez-Veiga R, Martínez-Sánchez MP, Amador-Barciela ML, Riaza-Grau R, Sanz MA. A prognostic model for survival after salvage treatment with FLAG-Ida +/− gemtuzumab-ozogamicine in adult patients with refractory/relapsed acute myeloid leukaemia. Br J Haematol 2016; 174:700-10. [DOI: 10.1111/bjh.14107] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 02/29/2016] [Indexed: 11/28/2022]
|
27
|
González-Pérez V, Arana E, Bartrés A, Oliver S, Pellicer B, Cruz J, Barrios M, Rubio L. EP-2050: The assessment of fractal dimension with Dual Energy CT gives information on lung cancer biomarkers. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)33301-1] [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]
|
28
|
Guilera G, Barrios M, Pino O, Salas D, Gómez-Benito J. Internet-based survey applied to experts in schizophrenia: Socio-demographic and professional variables associated to response pattern. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.2112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
IntroductionIn the framework of the development of the International Classification of Functioning, Disability and Health Core Set for schizophrenia, we conducted a cross-sectional, internet-based survey using open-ended questions. An international pool of experts from diverse health care disciplines was surveyed to identify problems in functioning experienced by individuals with schizophrenia.ObjectivesThe purpose of the study is to explore possible associations between experts’ socio-demographic and professional profiles, and whether they answered or not the survey.MethodsOut of 307 invited experts, 189 (61.56%) filled in the survey. However, 37 experts were excluded in the data analysis as they had completed only a part of the questionnaire. Thus, there were 152 of the experts classified as “respondents” and the remaining 155 as “non-respondents”. The association between the response pattern and the socio-demographic and professional variables (i.e., gender, World Health Organization region, discipline, and years of experience) was analysed by means of Chi2 tests.ResultsThere was a statistically significant association between the response pattern and the gender of the expert (χ2(1) = 4.927, P = 0.026; V = 0.127), showing that 56.3% of female and 43.6% of male experts answered the survey. When comparing the response pattern in terms of discipline, a statistically significant association was also found (χ2(4) = 10.101, P = 0.039; V = 0.183), showing that those who tend to answer the survey are occupational therapists (71.4%), followed by psychologists (58.0%), social workers (52.6%), nurses (52.0%), and psychiatrists (41.3%).ConclusionsFemales and occupational therapists presented the higher response rate to the expert survey.Disclosure of interestThe authors have not supplied their declaration of competing interest.
Collapse
|
29
|
Diaz J, Garcia-Soto A, Barrios M, Schroeder E, Estape R, Lopez K, Estape R. Outcomes of robotic secondary cytoreductive surgery for recurrent ovarian carcinoma. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.01.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
30
|
Diaz J, Schroeder E, Garcia-Soto A, Lopez K, Barrios M, Estape R, Estape R. Safety and efficacy of robotic cytoreductive surgery in the management of recurrent ovarian carcinoma. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.01.328] [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]
|
31
|
Dutton SM, Mendell MJ, Chan WR, Barrios M, Sidheswaran MA, Sullivan DP, Eliseeva EA, Fisk WJ. Evaluation of the indoor air quality minimum ventilation rate procedure for use in California retail buildings. INDOOR AIR 2015; 25:93-104. [PMID: 24809924 DOI: 10.1111/ina.12125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 05/02/2014] [Indexed: 06/03/2023]
Abstract
This research assesses benefits of adding to California Title-24 ventilation rate (VR) standards a performance-based option, similar to the American Society of Heating, Refrigerating, and Air Conditioning Engineers 'Indoor Air Quality Procedure' (IAQP) for retail spaces. Ventilation rates and concentrations of contaminants of concern (CoC) were measured in 13 stores. Mass balance models were used to estimate 'IAQP-based' VRs that would maintain concentrations of all CoCs below health- or odor-based reference concentration limits. An intervention study in a 'big box' store assessed how the current VR, the Title 24-prescribed VR, and the IAQP-based VR (0.24, 0.69, and 1.51 air changes per hour) influenced measured IAQ and perceived of IAQ. Neither current VRs nor Title 24-prescribed VRs would maintain all CoCs below reference limits in 12 of 13 stores. In the big box store, the IAQP-based VR kept all CoCs below limits. More than 80% of subjects reported acceptable air quality at all three VRs. In 11 of 13 buildings, saving energy through lower VRs while maintaining acceptable IAQ would require source reduction or gas-phase air cleaning for CoCs. In only one of the 13 retail stores surveyed, application of the IAQP would have allowed reduced VRs without additional contaminant-reduction strategies.
Collapse
|
32
|
Schreppler S, Spethmann N, Brahms N, Botter T, Barrios M, Stamper-Kurn DM. Optically measuring force near the standard quantum limit. Science 2014; 344:1486-9. [DOI: 10.1126/science.1249850] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
33
|
Dacosta-Aguayo R, Graña M, Savio A, Fernández-Andújar M, Millán M, López-Cancio E, Cáceres C, Bargalló N, Garrido C, Barrios M, Clemente IC, Hernández M, Munuera J, Dávalos A, Auer T, Mataró M. Prognostic value of changes in resting-state functional connectivity patterns in cognitive recovery after stroke: A 3T fMRI pilot study. Hum Brain Mapp 2014; 35:3819-31. [PMID: 24523262 PMCID: PMC4282459 DOI: 10.1002/hbm.22439] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 11/02/2013] [Accepted: 11/15/2013] [Indexed: 01/17/2023] Open
Abstract
Resting‐state studies conducted with stroke patients are scarce. First objective was to explore whether patients with good cognitive recovery showed differences in resting‐state functional patterns of brain activity when compared to patients with poor cognitive recovery. Second objective was to determine whether such patterns were correlated with cognitive performance. Third objective was to assess the existence of prognostic factors for cognitive recovery. Eighteen right‐handed stroke patients and eighteen healthy controls were included in the study. Stroke patients were divided into two groups according to their cognitive improvement observed at three months after stroke. Probabilistic independent component analysis was used to identify resting‐state brain activity patterns. The analysis identified six networks: frontal, fronto‐temporal, default mode network, secondary visual, parietal, and basal ganglia. Stroke patients showed significant decrease in brain activity in parietal and basal ganglia networks and a widespread increase in brain activity in the remaining ones when compared with healthy controls. When analyzed separately, patients with poor cognitive recovery (n = 10) showed the same pattern as the whole stroke patient group, while patients with good cognitive recovery (n = 8) showed increased activity only in the default mode network and fronto‐temporal network, and decreased activity in the basal ganglia. We observe negative correlations between basal ganglia network activity and performance in Semantic Fluency test and Part A of the Trail Making Test for patients with poor cognitive recovery. A reverse pattern was observed between frontal network activity and the abovementioned tests for the same group. Hum Brain Mapp 35:3819–3831, 2014. © 2014 The Authors. Human Brain Mapping published by Wiley Periodicals, Inc.
Collapse
|
34
|
Smalyuk VA, Tipton RE, Pino JE, Casey DT, Grim GP, Remington BA, Rowley DP, Weber SV, Barrios M, Benedetti LR, Bleuel DL, Bradley DK, Caggiano JA, Callahan DA, Cerjan CJ, Clark DS, Edgell DH, Edwards MJ, Frenje JA, Gatu-Johnson M, Glebov VY, Glenn S, Haan SW, Hamza A, Hatarik R, Hsing WW, Izumi N, Khan S, Kilkenny JD, Kline J, Knauer J, Landen OL, Ma T, McNaney JM, Mintz M, Moore A, Nikroo A, Pak A, Parham T, Petrasso R, Sayre DB, Schneider MB, Tommasini R, Town RP, Widmann K, Wilson DC, Yeamans CB. Measurements of an ablator-gas atomic mix in indirectly driven implosions at the National Ignition Facility. PHYSICAL REVIEW LETTERS 2014; 112:025002. [PMID: 24484021 DOI: 10.1103/physrevlett.112.025002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Indexed: 06/03/2023]
Abstract
We present the first results from an experimental campaign to measure the atomic ablator-gas mix in the deceleration phase of gas-filled capsule implosions on the National Ignition Facility. Plastic capsules containing CD layers were filled with tritium gas; as the reactants are initially separated, DT fusion yield provides a direct measure of the atomic mix of ablator into the hot spot gas. Capsules were imploded with x rays generated in hohlraums with peak radiation temperatures of ∼294 eV. While the TT fusion reaction probes conditions in the central part (core) of the implosion hot spot, the DT reaction probes a mixed region on the outer part of the hot spot near the ablator-hot-spot interface. Experimental data were used to develop and validate the atomic-mix model used in two-dimensional simulations.
Collapse
|
35
|
Roman-Gomez J, Jimenez-Velasco A, Agirre X, Cervantes F, Sanchez J, Garate L, Barrios M, Castillejo JA, Navarro G, Colomer D, Prosper F, Heiniger A, Torres A. Retraction Note: Promoter hypomethylation of the LINE-1 retrotransposable elements activates sense/antisense transcription and marks the progression of chronic myeloid leukemia. Oncogene 2013; 32:804. [DOI: 10.1038/onc.2012.592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
36
|
Haredasht SA, Taylor CJ, Maes P, Verstraeten WW, Clement J, Barrios M, Lagrou K, Van Ranst M, Coppin P, Berckmans D, Aerts JM. Model-Based Prediction of Nephropathia Epidemica Outbreaks Based on Climatological and Vegetation Data and Bank Vole Population Dynamics. Zoonoses Public Health 2012; 60:461-77. [DOI: 10.1111/zph.12021] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
37
|
Izumi N, Ma T, Barrios M, Benedetti LR, Callahan D, Cerjan C, Edwards J, Glenn S, Glenzer S, Kilkenny J, Kline J, Kyrala G, Landen OL, Regan S, Springer P, Suter L, Tommasini R, Town R, Mackinnon AJ, Bell P, Bradley DK. Measurement of electron temperature of imploded capsules at the National Ignition Facility. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:10E121. [PMID: 23126943 DOI: 10.1063/1.4738660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The electron and ion temperatures of the imploded core plasma are two of the most important metrics of inertial confinement fusion experiments. We have developed a technique for inferring electron temperatures from the contrast of x-ray images observed through a group of x-ray filters. Generally, the plasma electron temperature exhibits spatial and temporal variations, so time-averaged and time-resolved measurements are expected to yield somewhat different results. By analyzing the intensity of images observed with both a time-integrated detector (imaging plates) and a time-resolved detector (gated micro-channel plate), we found the electron temperature observed from x-ray images to be systematically higher than the ion temperature inferred from fusion neutron spectroscopy.
Collapse
|
38
|
Ribera JM, García O, Montesinos P, Brunet S, Abella E, Barrios M, González-Campos J, Bravo P, Amigo ML, Hernández-Rivas JM. Treatment of young patients with Philadelphia chromosome-positive acute lymphoblastic leukaemia using increased dose of imatinib and deintensified chemotherapy before allogeneic stem cell transplantation. Br J Haematol 2012; 159:78-81. [PMID: 22823211 DOI: 10.1111/j.1365-2141.2012.09240.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 06/06/2012] [Indexed: 11/27/2022]
Abstract
The main outcomes of the Programa Español para Tratamiento de Hemopatías (PETHEMA)-acute lymphoblastic leukaemia (ALL)-Ph-08 trial were described and compared with those of the historical PETHEMA-CSTIBES02 trial. The trials differed in imatinib dose (600 vs. 400 mg/d) and amount of chemotherapy (one vs. two consolidation cycles) before stem cell transplantation (SCT). All patients (n = 29) enrolled in the ALL-Ph-08 trial achieved complete remission (CR) (vs. 90% in CSTIBES02), and SCT was performed in CR in 90% (vs. 78%). The reduction in early death, relapse before SCT and transplant-related mortality observed in the ALL-Ph-08 trial resulted in an improved 2-year event-free survival (63% vs. 37%, P = 0·009).
Collapse
|
39
|
Barrios M, Taylor P, Rodríguez-Acosta A, Sánchez EE, Arocha-Piñango CL, Gil A, Salazar AM, Carvajal Z, Abad MJ, Guerrero B. A mouse model to study the alterations in haemostatic and inflammatory parameters induced by Lonomia achelous caterpillar haemolymph. Toxicon 2012; 59:547-54. [PMID: 22310207 DOI: 10.1016/j.toxicon.2012.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Revised: 01/17/2012] [Accepted: 01/18/2012] [Indexed: 11/30/2022]
Abstract
A mouse model was established to reproduce the haemorrhagic syndrome which occurs in humans after accidental contact with the hairs of the caterpillar Lonomia achelous (LA) and measures the haemostatic and inflammatory alterations that occur as a result of this contact. Mice were injected intradermally with different doses (0.4, 0.8 and 1.6 mg/animal) of L. achelous haemolymph (LAH). Haematological (haemoglobin, haematocrit, platelet count, differential leukocyte count), haemostatic (fibrinogen, plasminogen, factor XIII [FXIII], fibrinolytic activity) and inflammatory parameters (tumour necrosis factor alpha [TNF-α], nitric oxide [NO]) were measured at different times up to 48 h. C57BL/6 mice responded to LAH injection, in terms of these parameters, in a manner similar to that seen in humans, whereas the BALB/c mice were unresponsive. In C57BL/6 mice injected with LAH, time course measurements showed: a) a reduction in the haemoglobin, haematocrit, fibrinogen, FXIII and plasminogen levels, b) no effect on the platelet count and c) immediate leukocytosis and an increase in the fibrinolytic activity in plasma. An inflammatory response (TNF-α) was observed within 1 h post-injection, followed by a more persistent increase in serum NO. These findings suggest that C57BL/6 mice represent a useful model of the haemorrhagic syndrome observed in humans who have suffered contact with the caterpillar, permitting a deeper understanding of the role of the inflammatory response in the haematological and haemostatic manifestations of this syndrome.
Collapse
|
40
|
Quintero A, Fabbro R, Maillo M, Barrios M, Milano MB, Fernández A, Williams B, Michelangeli F, Rangel HR, Pujol FH. Inhibition of hepatitis B virus and human immunodeficiency virus (HIV-1) replication by Warscewiczia coccinea (Vahl) Kl. (Rubiaceae) ethanol extract. Nat Prod Res 2011; 25:1565-9. [PMID: 21827337 DOI: 10.1080/14786419.2010.535164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The primary objective of this study was to search for natural products capable of inhibiting hepatitis B virus (HBV) replication. The research design, methods and procedures included testing hydro-alcoholic extracts (n = 66) of 31 species from the Venezuelan Amazonian rain forest on the cell line HepG2 2.2.15, which constitutively produces HBV. The main outcomes and results were as follows: the species Euterpe precatoria, Jacaranda copaia, Jacaranda obtusifolia, Senna silvestris, Warscewiczia coccinea and Vochysia glaberrima exerted some degree of inhibition on HBV replication. The leaves of W. coccinea showed a significant antiviral activity: 80% inhibition with 100 µg mL⁻¹ of extract. This extract also exerted inhibition on covalently closed circular deoxyribonucleic acid (cccDNA) production and on HIV-1 replication in MT4 cells (more than 90% inhibition with 50 µg mL⁻¹ of extract). Initial fractionation using organic solvents of increasing polarity and water showed that the ethanol fraction was responsible for most of the antiviral inhibitory activities of both the viruses. It was concluded that Warscewiczia coccinea extract showed inhibition of HBV and HIV-1 replication. Bioassay-guided purification of this fraction may allow the isolation of an antiviral compound with inhibitory activity against both viruses.
Collapse
|
41
|
Haredasgt SA, Barrios M, Maes P, Clement J, Lagrou K, Ranst MV, Coppin P, Berckmans D, Aerts JM. P1-387 Time series analysis performed on nephropathia epidemica in Belgium. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976f.78] [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]
|
42
|
Miralbell J, Soriano JJ, López-Cancio E, Arenillas JF, Dorado L, Barrios M, Cáceres C, Alzamora MT, Torán P, Pera G, Dávalos A, Mataró M. [Vascular risk factors and cognitive performance in patients 50 to 65 years-old]. Neurologia 2010; 25:422-429. [PMID: 20964988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
INTRODUCTION Vascular risk factors (VRF) have been related to cognitive deficits and an increased risk of dementia. Cognitive impairment is considered to be one of the earliest manifestations of cerebrovascular disease. In Spain there is a high prevalence of VRF, but also one of the lowest incidences of cerebrovascular disease in Europe. This is the first study that investigates the relationship between VRF and cognition in a Spanish sample. METHODS A total of 90 people aged between 50-65 years with a low-to-moderate cardiovascular risk underwent a neuropsychological evaluation. None of them had a history of cardiovascular disease. The battery included tests assessing executive, attentional, mnesic, visuospatial and motor-speed/coordination functions. We used correlation and inter-groups comparison to relate VRF to multiple cognitive domains0120. RESULTS Higher stroke risk was significantly related to a lowered profile in visuo-constructive functions and motor-speed/coordination. Moreover, the group with moderate cardiovascular risk showed a lower performance in visuoconstructive functions compared to the low-risk group. After statistical adjustment for age, sex and years of scholarship VRF were only related to motor-speed/coordination. CONCLUSIONS In healthy, middle-aged adults, VRF are related with impairment in two cognitive domains. This effect is slight and tends to appear in people with moderate cardiovascular risk.
Collapse
|
43
|
Miralbell J, Soriano J, López-Cancio E, Arenillas J, Dorado L, Barrios M, Cáceres C, Alzamora M, Torán P, Pera G, Dávalos A, Mataró M. Factores de riesgo vascular y rendimiento cognitivo en personas de 50 a 65 años. Neurologia 2010. [DOI: 10.1016/j.nrl.2010.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
44
|
Jiménez-Velasco A, Barrios M, Alcalá M, Heiniger AI. Chronic myeloid leukemia: how can minimal cytogenetic response after 3 months of treatment be classified according to the new European LeukemiaNet recommendations? J Clin Oncol 2010; 28:e310; author reply e311. [PMID: 20479423 DOI: 10.1200/jco.2010.28.9884] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
45
|
Daskalaki M, Rojo P, Marin-Ferrer M, Barrios M, Otero JR, Chaves F. Panton-Valentine leukocidin-positive Staphylococcus aureus skin and soft tissue infections among children in an emergency department in Madrid, Spain. Clin Microbiol Infect 2010; 16:74-7. [PMID: 19519839 DOI: 10.1111/j.1469-0691.2009.02830.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fifty-three children who attended the emergency department with community-associated (CA) Staphylococcus aureus skin and soft tissue infections (SSTIs) were enrolled in the study. Seven cases of infection (13.2%) were due to methicillin-resistant S. aureus (MRSA). Twelve of 46 available isolates (26.1%) were Panton-Valentine leukocidin (PVL)-positive. PVL-positive S. aureus SSTIs were more frequently associated with abscesses and cellulitis (75% vs. 38%, p 0.028), and more commonly required incision and drainage (75% vs. 21%, p 0.001). Most PVL-positive CA-MRSA isolates belonged to a single multilocus sequence type (ST8). In contrast, PVL-positive methicillin-susceptible S. aureus isolates belonged to four different sequence types (ST8, ST30, ST80, ST120).
Collapse
|
46
|
Urbina F, Sudy E, Barrios M. Foliculitis por tracción: seis casos producidos por diferentes tipos de peinado tirante. ACTAS DERMO-SIFILIOGRAFICAS 2009. [DOI: 10.1016/s0001-7310(09)71598-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
47
|
Roman-Gomez J, Castillejo JA, Jimenez A, Barrios M, Heiniger A, Torres A. The Role of DNA Hypermethylation in the Pathogenesis and Prognosis of Acute Lymphoblastic Leukemia. Leuk Lymphoma 2009; 44:1855-64. [PMID: 14738136 DOI: 10.1080/1042819031000116689] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The hallmark of acute lymphoblastic leukemia (ALL) is a progressive appearance of malignant cell behavior that is triggered by the evolution of altered gene function. ALL has traditionally been viewed as a genetic disease, however, epigenetic defects also play an important role. DNA promoter methylation has gained increasing recognition as an important mechanism for transcriptional silencing of cancer related genes. The hypermethylation-associated inactivation affects virtually all of the pathways in the ALL cellular network, such as the cell cycle, apoptosis and adhesion. The identification of these methylation abnormalities and elucidation of the mechanistic events surrounding them are of prime importance, as the methylation status of ALL cells can be used as prognostic biomarker and also can be manipulated in vivo with demethylating agents.
Collapse
|
48
|
Urbina F, Sudy E, Barrios M. [Traction folliculitis: 6 cases caused by different types of hairstyle that pull on the hair]. ACTAS DERMO-SIFILIOGRAFICAS 2009; 100:503-506. [PMID: 19709556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
Excessive hair traction caused by hairstyles that pull the hair too tightly may cause noninfectious mechanical and irritant folliculitis known as traction folliculitis. We present a series of 6 cases of traction folliculitis caused by different hairstyles. All patients were women aged between 12 and 26 years old. Their hairstyles were braids, ponytails, pigtails, cornrows, and hair extensions in 2 patients. The lesions consisted of small, slightly painful, follicular pustules confined to the sites of maximum hair traction and surrounded by erythema. Only in 1 case were the lesions associated with traction alopecia. In 2 cases in which bacterial cultures were done, Staphylococcus aureus was isolated. All patients improved after undoing their hairstyle and treatment with oral flucloxacillin. We assume that the role of S aureus is secondary and opportunistic, given that only follicles subject to traction and not the adjacent ones were affected.
Collapse
|
49
|
Moliner-Martínez Y, Barrios M, Cárdenas S, Valcárcel M. Comparative study of carbon nanotubes and C60 fullerenes as pseudostationary phases in electrokinetic chromatography. J Chromatogr A 2008; 1194:128-33. [DOI: 10.1016/j.chroma.2008.04.034] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2008] [Revised: 04/08/2008] [Accepted: 04/16/2008] [Indexed: 11/26/2022]
|
50
|
Roman-Gomez J, Jimenez-Velasco A, Barrios M, Prosper F, Heiniger A, Torres A, Agirre X. Poor prognosis in acute lymphoblastic leukemia may relate to promoter hypermethylation of cancer-related genes. Leuk Lymphoma 2007; 48:1269-82. [PMID: 17613754 DOI: 10.1080/10428190701344899] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The hallmark of acute lymphoblastic leukemia (ALL) is a progressive appearance of malignant cell behavior that is triggered by the evolution of altered gene function. ALL has traditionally been viewed as a genetic disease; however, epigenetic defects also play an important role. DNA promoter methylation has gained increasing recognition as an important mechanism for transcriptional silencing of tumor-suppressor genes. Hypermethylation may contribute to the pathogenesis of leukemias providing an alternative route to gene mutation. We have reported that gene methylation in ALL cells is the most important way to inactivate cancer-related genes in this disease. In fact, this epigenetic event can help to inactivate tumor-suppressive apoptotic or growth-arresting responses and has prognostic impact in B- and T-ALL. The presence in individual tumors of multiple genes simultaneously methylated is an independent factor of poor prognosis in both childhood and adult ALL in terms of disease-free survival and overall survival. Moreover, methylation status is able to redefine the prognosis of selected ALL groups with well-established prognostic features.
Collapse
|