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Ferrero A, Campos J, Rabal AM, Pons A. A single analytical model for sparkle and graininess patterns in texture of effect coatings. OPTICS EXPRESS 2013; 21:26812-26819. [PMID: 24216903 DOI: 10.1364/oe.21.026812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Flakes in effect coatings, which are responsible for its color shift, are not perfectly horizontally oriented, producing a non uniform texture when observed from a distance of around one meter or less. If the coating is illuminated by a diffuse source, a granular appearance is observed, called graininess. But when the coating is illuminated by unidirectional light, some luminous spots on a dark background appear, effect that is known as sparkle. The characterization of these two textures is getting more important for automotive industry because of the high percentage of cars with effect coatings and because improvements in imaging technology allows this effect to be measured by, for instance, commercial instruments as BYK-mac. A single analytical model to understand and radiometrically characterize both sparkle and graininess in effect coatings is presented and studied in this work. It allows both patterns to be explained and, despite its simplicity, includes variables related to the optical system (Point Spread Function (PSF) and size of the entrance pupil), its distance to the coating, the diffusion grade of the illumination, the illumination and observation directions, and coating parameters.
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Russo M, Sevlever G, Vázquez S, Gustafson D, Surace E, Campos J, Martín M, Martineto H, Ventrice F, Guinjoan S, Allegri R. Argentina-ADNI: Preliminary report on CSF biomarkers. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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78
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Woodward EM, Christoffersen M, Campos J, Betancourt A, Horohov D, Scoggin KE, Squires EL, Troedsson MHT. Endometrial inflammatory markers of the early immune response in mares susceptible or resistant to persistent breeding-induced endometritis. Reproduction 2013; 145:289-96. [PMID: 23580950 DOI: 10.1530/rep-12-0452] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Transient endometritis after breeding is necessary for clearance of bacteria and spermatozoa; however, in a subpopulation of mares, the inflammation fails to resolve in a timely fashion. The objective of this study was to describe the uterine inflammatory response in mares susceptible or resistant to persistent breeding-induced endometritis (PBIE) during the first 24 h after induction of uterine inflammation.Twelve mares were classified as susceptible (nZ6) or resistant (nZ6) to PBIE. Mares were inseminated over five estrous cycles and endometrial biopsies were collected at one time point per cycle before (0) and 2, 6, 12, and 24 h after insemination. qPCR analysis for IL1B, IL6, IL8, IFNG, TNF (TNFA), IL10, and IL1RN was performed, and endometrial inflammatory cells were counted for each sample. Relative quantification values reported fold changes in mRNA expression from 0 h values. A general pattern of expression post insemination was observed in both groups of mares. Cytokine mRNA increased at 2 h, peaked between 2 and 12 h, and then decreased.Differences were detected between groups of mares 6 h after challenge; resistant mares had higher mRNA expression of IL6, IL1RN,and IL10 than susceptible mares. Susceptible mares had an increased number of polymorphonuclear neutrophils in the endometrium 2 and 12 h after breeding when compared with resistant mares. These findings describe an inherent difference in the initial immune response to insemination and may help explain the transient nature of inflammation in resistant mares, whereas susceptible mares develop a persistent inflammation.
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79
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Mabit J, Campos J, Arce J. Consideraciones acerca del brebaje ayahuasca y perspectivas terapéuticas. ACTA ACUST UNITED AC 2013. [DOI: 10.20453/rnp.v55i2.1281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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80
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Oliveira RS, Nobre S, Antunes J, Campos J. Disturbance of motor development: a manifestation of stroke in early childhood. CASE REPORTS 2013; 2013:bcr-2013-008835. [DOI: 10.1136/bcr-2013-008835] [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] Open
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81
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Méndez C, Silva L, Andreu JL, Muñoz L, Ortiz I, García B, Sangüesa C, Barbadillo C, Sanz J, Fernández M, Campos J. AB0215 Risk markers of morphometric vertebral fracture in rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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82
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Hussain A, Martínez JL, Lizana A, Campos J. Super resolution imaging achieved by using on-axis interferometry based on a Spatial Light Modulator. OPTICS EXPRESS 2013; 21:9615-9623. [PMID: 23609671 DOI: 10.1364/oe.21.009615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
An interferometry based method to achieve resolution beyond the diffraction barrier is proposed. Object is illuminated with different tilted beams, generated by using a Spatial Light Modulator (SLM). In addition, some constant phases are also assigned to each tilted beam with the SLM display. Then, the object is simultaneously illuminated with all tilted beams, producing an on-axis interferometry scheme. An interferogram at the image plane is formed for each set of constant phases added to the tilted beams. Using proper selection of constant phases for each of the interferograms, the synthetic aperture can be calculated. During the post processing, we take the Fourier transforms of the each image and the portions of the spectrum are spatially shifted and combined to obtain synthesized spectrum whose inverse Fourier transform gives high resolution image.
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83
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Ramirez C, Karakus B, Lizana A, Campos J. Polarimetric method for liquid crystal displays characterization in presence of phase fluctuations. OPTICS EXPRESS 2013; 21:3182-3192. [PMID: 23481777 DOI: 10.1364/oe.21.003182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A polarimetry based method able to characterize optical properties of linear Liquid Crystal Displays (LCDs), even in presence of time-fluctuations of the phase, is proposed in this work. In particular, mean linear retardance, Liquid Crystal (LC) fast axis orientation and phase fluctuation amplitude of LCDs can be obtained with the proposed alternative technique. This technique enables to achieve these important features of LCDs with a set-up significantly less complicated to build up and with faster measurements than previously proposed techniques, which are based on diffraction or interferometry experiments. The validity of the technique is tested by measuring two different LCDs: one monopixel PA-LC panel working in transmission and a reflective PA-LCoS display. The technique provides similar results than those obtained by using previously proposed methods, confirming the validity of our alternative technique.
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84
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García-Cobos S, Arroyo M, Campos J, Pérez-Vázquez M, Aracil B, Cercenado E, Orden B, Lara N, Oteo J. Novel mechanisms of resistance to β-lactam antibiotics in Haemophilus parainfluenzae: β-lactamase-negative ampicillin resistance and inhibitor-resistant TEM β-lactamases. J Antimicrob Chemother 2013; 68:1054-9. [DOI: 10.1093/jac/dks525] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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85
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Fernández J, Torres MJ, Campos J, Arribas-Poves F, Blanca M. Prospective, multicenter clinical trial to validate new products for skin tests in the diagnosis of allergy to penicillin. J Investig Allergol Clin Immunol 2013; 23:398-408. [PMID: 24459816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
BACKGROUND Allergy to penicillin is the most commonly reported type of drug hypersensitivity. Diagnosis is currently confirmed using skin tests with benzylpenicillin reagents, ie, penicilloyl-polylysine (PPL) as the major determinant of benzylpenicillin and benzylpenicillin, benzylpenicilloate and benzylpenilloate as a minor determinant mixture (MDM). OBJECTIVE To synthesize and assess the diagnostic capacity of 2 new benzylpenicillin reagents in patients with immediate hypersensitivity reactions to B-lactams: benzylpenicilloyl octa-L-lysine (BP-OL) as the major determinant and benzylpenilloate (penilloate) as the minor determinant. METHODS Prospective multicenter clinical trial performed in 18 Spanish centers. Efficacy was assessed by detection of positive skin test results in an allergic population and negative skin test results in a nonallergic, drug-exposed population. Sensitivity, specificity, and negative and positive predictive values were determined. RESULTS The study sample comprised 94 allergic patients: 31 (35.23%) presented anaphylaxis, 4 (4.55%) anaphylactic shock, 51 (58.04%) urticaria, and 2 (2.27%) no specific condition. The culprit 8-lactams were amoxicillin in 63 cases (71.60%), benzypencillin in 14 cases (15.89%), cephalosporins in 2 cases (2.27%), other drugs in 3 cases (3.42%), and unidentified agents in 6 cases (6.82%). The results of testing with BP-OL were positive in 46 cases (52.3%); the results of testing with penilloate were positive in 33 cases (37.5%). When both reagents were taken into consideration, sensitivity reached 61.36% and specificity 100%. Skin testing with penilloate was significantly more often negative when the interval between the reaction and the study was longer. CONCLUSIONS The sensitivity of BP-OL and penilloate was 61%. Considering that amoxicillin was the culprit drug in 71% of reactions, these results indicate that most patients were allergic to the whole group of penicillins. These data support the use of benzylpenicillin determinants in the diagnosis of allergy to beta-lactams, even in predominantly amoxicillin-allergic populations.
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Woodward EM, Christoffersen M, Campos J, Horohov DW, Scoggin KE, Squires E, Troedsson MHT. An Investigation of Uterine Nitric Oxide Production in Mares Susceptible and Resistant to Persistent Breeding-Induced Endometritis and the Effects of Immunomodulation. Reprod Domest Anim 2012; 48:554-61. [DOI: 10.1111/rda.12124] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 10/23/2012] [Indexed: 02/05/2023]
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87
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Morrell JM, Timoney P, Klein C, Shuck K, Campos J, Troedsson M. Single-Layer Centrifugation Reduces Equine Arteritis Virus Titre in the Semen of Shedding Stallions. Reprod Domest Anim 2012. [DOI: 10.1111/rda.12133] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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88
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Garcia-Cobos S, Arroyo M, Perez-Vazquez M, Aracil B, Oteo J, Campos J. Evaluation of the EUCAST disc diffusion susceptibility testing method for Haemophilus influenzae based on the resistance mechanism to -lactam antibiotics. J Antimicrob Chemother 2012; 68:159-63. [DOI: 10.1093/jac/dks374] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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89
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Scholz CH, Campos J. On the mechanism of seismic decoupling and back arc spreading at subduction zones. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/95jb01869] [Citation(s) in RCA: 241] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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90
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Treff N, Tao X, Campos J, Ferry K, Levy B, Scott R. Trophectoderm is predictive of the inner cell mass and newborn mitochondrial DNA mutation load. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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91
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Werner M, Campos J, Forman E, Hong K, Treff N, Scott R. Single nucleotide polymorphism (SNP) microarrays (MA) may be valuable in detecting small genomic imbalances and distinguishing balanced from normal embryos for carriers of reciprocal translocations. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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92
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Campos J, Dennome L, Vassos L, Cinelli M. Assessing Spatial Updating Using Continuous Pointing: Effects of Age and Expertise. J Vis 2012. [DOI: 10.1167/12.9.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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93
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Rodríguez MLC, Campos J, Forcato C, Leiguarda R, Maldonado H, Molina VA, Pedreira ME. Enhancing a declarative memory in humans: the effect of clonazepam on reconsolidation. Neuropharmacology 2012; 64:432-42. [PMID: 22819624 DOI: 10.1016/j.neuropharm.2012.06.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 06/23/2012] [Accepted: 06/26/2012] [Indexed: 10/28/2022]
Abstract
A consolidated memory recalled by a specific reminder can become unstable (labile) and susceptible to facilitation or impairment for a discrete period of time. This labilization phase is followed by a process of stabilization called reconsolidation. The phenomenon has been shown in diverse types of memory, and different pharmacological agents have been used to disclose its presence. Several studies have revealed the relevance of the GABAergic system to this process. Consequently, our hypothesis is that the system is involved in the reconsolidation of declarative memory in humans. Thus, using our verbal learning task, we analyzed the effect of benzodiazepines on the re-stabilization of the declarative memory. On Day 1, volunteers learned an association between five cue- response-syllables. On Day 2, the verbal memory was labilized by a reminder presentation, and then a placebo capsule or 0.25 mg or 0.03 mg of clonazepam was administered to the subjects. The verbal memory was evaluated on Day 3. The volunteers who had received the 0.25 mg clonazepam along with the specific reminder on Day 2, exhibited memory improvement. In contrast, there was no effect when the drug was given without retrieval, when the memory was simply retrieved instead of being reactivated or when short-term memory testing was performed 4 h after reactivation. We discuss the GABAergic role in reconsolidation, which shows a collateral effect on other memories when the treatment is aimed at treating anxiety disorders. Further studies might elucidate the role of GABA in the reconsolidation process associated with dissimilar scenarios. This article is part of a Special Issue entitled 'Cognitive Enhancers'.
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Neto L, Moura Guedes M, Campos J. Spinal subarachnoid hemorrhage mimicking an acute abdomen. Neuroradiol J 2012; 25:217-21. [PMID: 24028918 DOI: 10.1177/197140091202500211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 02/19/2012] [Indexed: 11/15/2022] Open
Abstract
A 39-year-old woman with a history of systemic lupus erythematosum developed an acute abdomen. An intestinal ischemia was suspected and an exploratory laparotomy was performed. No abnormalities were found during surgery and five days later the patient was transferred to our institution. On admission, the patient presented a distended abdomen and paraparesis. The spinal tap showed hemorrhagic CSF and the MRI a subacute subarachnoid hemorrhage (SAH) of the dorsal-lumbar spine. Two days later, the patient suffered an episode of sudden headache. The CT scan revealed an acute SAH at the posterior fossa and digital subtraction angiography a dissection of the right V4 segment. Spinal subarachnoid hemorrhage is a rare syndrome particularly when associated with dissecting aneurysms of the intracranial segment of the vertebral artery. SSAH should be considered early in the differential diagnosis of any case with sudden back or abdominal pain of unknown etiology, even in the absence of neurological deficits.
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Woodward EM, Christoffersen M, Campos J, Squires EL, Troedsson MHT. Susceptibility to persistent breeding-induced endometritis in the mare: relationship to endometrial biopsy score and age, and variations between seasons. Theriogenology 2012; 78:495-501. [PMID: 22494681 DOI: 10.1016/j.theriogenology.2012.02.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 02/15/2012] [Accepted: 02/15/2012] [Indexed: 10/28/2022]
Abstract
The objectives were to: (1) investigate the associations of age and endometrial biopsy score with uterine fluid retention after insemination; and (2) determine if a strict classification of susceptibility to persistent breeding-induced endometritis (PBIE) based on biopsy score, endometrial cytology, and fluid retention after inseminations, is consistent over subsequent breeding seasons. In Experiment 1, 57 mares were inseminated with 10(9) freeze-killed sperm during estrus and evaluated for uterine fluid retention 48 h and 96 h after insemination. Comparisons were made between fluid retention and biopsy score or age. In Experiment 2, a subset of 14 mares was classified for susceptibility to persistent breeding-induced endometritis in two subsequent breeding seasons. Biopsy score and age were associated with fluid retention (P < 0.001). In addition, age was related to biopsy score (P < 0.001). Of the mares examined for susceptibility, 36% (5 of 14) changed status during subsequent seasons. Three mares changed to a more severe classification (intermediate to susceptible, or resistant to intermediate), whereas two mares changed to a less severe classification (susceptible to intermediate).
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Campos J, Pichel M, Vaz T, Tavechio A, Fernandes S, Muñoz N, Rodriguez C, Realpe M, Moreno J, Araya P, Fernández J, Fernández A, Campos E, Duarte F, Gustafson NW, Binsztein N, Gutierrez EP. Building PulseNet Latin America and Caribbean Salmonella regional database: First conclusions of genetic subtypes of S. Typhi, S. Typhimurium and S. Enteritidis circulating in six countries of the region. Food Res Int 2012. [DOI: 10.1016/j.foodres.2011.10.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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97
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Geraldo AF, Bastos-Carvalho A, Neto LL, Sousa RF, Sequeira PT, Campos J. Leukocoria in a child with sturge-weber syndrome. Neuroradiol J 2012; 25:85-8. [PMID: 24028881 DOI: 10.1177/197140091202500112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 11/02/2011] [Indexed: 11/16/2022] Open
Abstract
A five-year-old girl with Sturge-Weber syndrome (SWS) presented with unilateral leukocoria. Imaging excluded retinoblastoma and revealed a choroidal hemangioma, a non-traumatic vitreous hemorrhage and a cataract. To the best of our knowledge, this is the first case report in the radiologic literature of these ophthalmologic findings presenting together and conditioning leukocoria in the setting of SWS. We discuss possible mechanisms and review the literature, emphasizing the role of neuroimaging in pediatric patients with SWS and ophthalmologic complaints.
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98
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Ferrero A, Campos J, Rabal AM, Pons A, Hernanz ML, Corróns A. Principal Components Analysis on the spectral Bidirectional Reflectance Distribution Function of ceramic colour standards. OPTICS EXPRESS 2011; 19:19199-19211. [PMID: 21996862 DOI: 10.1364/oe.19.019199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The Bidirectional Reflectance Distribution Function (BRDF) is essential to characterize an object's reflectance properties. This function depends both on the various illumination-observation geometries as well as on the wavelength. As a result, the comprehensive interpretation of the data becomes rather complex. In this work we assess the use of the multivariable analysis technique of Principal Components Analysis (PCA) applied to the experimental BRDF data of a ceramic colour standard. It will be shown that the result may be linked to the various reflection processes occurring on the surface, assuming that the incoming spectral distribution is affected by each one of these processes in a specific manner. Moreover, this procedure facilitates the task of interpolating a series of BRDF measurements obtained for a particular sample.
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99
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Taylor D, Campos J, Tao X, Garnsey H, Rary L. The impact of chromosome specific aneuploidy on blastocyst quality. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.262] [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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100
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Su J, Campos J, McCormick S, Rawlins M, Smith R, Treff N. Polar body morphology is not predictive of its cell division origin. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.230] [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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