ABSTRACT
Auranofin, an FDA-approved drug for rheumatoid arthritis, has emerged as a promising antiparasitic medication in recent years. The gold(I) ion in auranofin is postulated to be responsible for its antiparasitic activity. Notably, aurothiomalate and aurothioglucose also contain gold(I), and, like auranofin, they were previously used to treat rheumatoid arthritis. Whether they have antiparasitic activity remains to be elucidated. Herein, we demonstrated that auranofin and similar derivatives, but not aurothiomalate and aurothioglucose, inhibited the growth of Toxoplasma gondii in vitro. We found that auranofin affected the T. gondii biological cycle (lytic cycle) by inhibiting T. gondii's invasion and triggering its egress from the host cell. However, auranofin could not prevent parasite replication once T. gondii resided within the host. Auranofin treatment induced apoptosis in T. gondii parasites, as demonstrated by its reduced size and elevated phosphatidylserine externalization (PS). Notably, the gold from auranofin enters the cytoplasm of T. gondii, as demonstrated by scanning transmission electron microscopy-energy dispersive X-ray spectroscopy (STEM-EDS) and Inductively Coupled Plasma-Mass Spectrometry (ICP-MS).IMPORTANCEToxoplasmosis, caused by Toxoplasma gondii, is a devastating disease affecting the brain and the eyes, frequently affecting immunocompromised individuals. Approximately 60 million people in the United States are already infected with T. gondii, representing a population at-risk of developing toxoplasmosis. Recent advances in treating cancer, autoimmune diseases, and organ transplants have contributed to this at-risk population's exponential growth. Paradoxically, treatments for toxoplasmosis have remained the same for more than 60 years, relying on medications well-known for their bone marrow toxicity and allergic reactions. Discovering new therapies is a priority, and repurposing FDA-approved drugs is an alternative approach to speed up drug discovery. Herein, we report the effect of auranofin, an FDA-approved drug, on the biological cycle of T. gondii and how both the phosphine ligand and the gold molecule determine the anti-parasitic activity of auranofin and other gold compounds. Our studies would contribute to the pipeline of candidate anti-T. gondii agents.
Subject(s)
Arthritis, Rheumatoid , Phosphines , Toxoplasma , Toxoplasmosis , Humans , Auranofin/pharmacology , Auranofin/therapeutic use , Gold/pharmacology , Gold/therapeutic use , Ligands , Aurothioglucose/pharmacology , Aurothioglucose/therapeutic use , Arthritis, Rheumatoid/drug therapy , Gold Sodium Thiomalate/pharmacology , Gold Sodium Thiomalate/therapeutic use , Antiparasitic Agents/pharmacology , Antiparasitic Agents/therapeutic useABSTRACT
PURPOSE: To analyse the degree of pneumatisation of the temporal bone when there is an association between dehiscence of the superior semicircular canal and dehiscence of the tegmen tympani. MATERIALS AND METHODS: We analysed a retrospective CT study of 124 selected cases. A single inclusion criterion was applied: the presence of a dehiscence of the tegmen tympani. On the other hand, the degree of temporal pneumatisation was assessed by axial and coronal planes, and has been divided into the following grades O, I, II and III, according to the status and relationship of the mastoid, the bony labyrinth, the petrous segment of the carotid canal and sigmoid sinus. RESULTS: Of the 124 cases studied, 35 (28.2%) presented both dehiscences. In 26 of the 35 (47.3%), grade II pneumatisation, 4 (14,8%), grade I, and 5 (11,9%) grade III was observed, with a statistically significant relationship (p < 0.001). On the other hand, we did not find a significant relationship when relating both dehiscences in any age or sex group. However, when relating the degree of pneumatisation to sex, among those with grade III pneumatisation, the proportion of men (52.4%) was significantly higher than that of women (47.6%) (p = 0.017). CONCLUSION: We have detected a statistically significant relationship between the coexistence of grade II pneumatisation and the presence of both dehiscences in the temporal bone.
Subject(s)
Ear, Middle , Temporal Bone , Male , Humans , Female , Retrospective Studies , Temporal Bone/diagnostic imaging , Semicircular Canals/diagnostic imaging , MastoidABSTRACT
In December 1923, a twelve-day course took place at the University of Zaragoza, specifically at the Faculty of Medicine, given by Professor Róbert Bárány, who was awarded the Nobel Prize for Medicine in 1914 for his discoveries on the vestibular apparatus.Professor Robert Bárány came to the faculty at the invitation of Professor Victor Fairén through the University Exchange programme. This course consisted of four lectures and twelve lessons a day in which he presented his knowledge of the physiopathology of the vestibule and cerebellum, as well as practical demonstrations of the physical examination of nystagmus and cerebellar pathology.Lorente de Nó, a doctorate student of medicine, was one of the most outstanding students on the course. His intellect was already outstanding in those years, which helped him to discuss the physiopathology of nystagmus with Professor Bárány. The relationship he forged with the Nobel laureate in Zaragoza would be decisive for his future as a researcher.The aim of this work is to compile and integrate the available information on the course that Professor Bárány took in the city of Zaragoza, consulting official documents from the university and the city, articles, books and the press of the time.
ABSTRACT
BACKGROUND: Game-based learning (GBL) is effective for increasing participation, creativity, and student motivation. However, the discriminative value of GBL for knowledge acquisition has not yet been proven. The aim of this study is to assess the value of Kahoot! as a discriminative tool for formative assessment in medical education in two different subjects. METHODS: A prospective experimental study was conducted on a sample of 173 students enrolled in neuroanatomy (2021-2022). One hundred twenty-five students individually completed the Kahoot! prior to the final exam. In addition, students enrolled in human histology during two academic courses were included in the study. The control group course (2018-2019) received a traditional teaching methodology (N = 211), while Kahoot! was implemented during 2020-2021 (N = 200). All students completed similar final exams for neuroanatomy and human histology based on theory tests and image exams. RESULTS: The correlation between the Kahoot score and the final grade was analyzed for all students enrolled in neuroanatomy who completed both exercises. The correlation between the Kahoot exercise and the theory test, image exam and final grade was significantly positive in all cases (r = 0.334 p < 0.001, r = 0.278 p = 0.002 and r = 0.355 p < 0.001, respectively). Moreover, students who completed the Kahoot! exercise obtained significantly higher grades in all parts of the exam. Regarding human histology, the theory tests, image exams and final grades were significantly higher when using Kahoot! versus the "traditional" methodology (p < 0.001, p < 0.001 and p = 0.014, respectively). CONCLUSIONS: Our study demonstrates for the first time that Kahoot! can be used to improve and predict the final grade in medical education subjects.
Subject(s)
Educational Measurement , Students , Humans , Educational Measurement/methods , Prospective Studies , Curriculum , MotivationABSTRACT
OBJECTIVE: In the hospital of La Princesa, the "Sepsis Code" (CSP) began in 2015, as a multidisciplinary group that provides health personnel with clinical, analytical and organizational tools, with the aim of the detection and early treatment of patients with sepsis. The objective of this study is to evaluate the impact of CSP implantation on mortality and to determine the variables associated with an increase in it. METHODS: A retrospective analytical study of patients with CSP alert activation from 2015 to 2018 was conducted. Clinical-epidemiological variables, analytical parameters, and severity factors such as admission to critical care units (UCC) and the need for amines were collected. Statistical significance was established at p < 0.05. RESULTS: We included 1,121 patients. The length of stay was 16 days and 32% required admission to UCC. Mortality showed a statistically significant linear downward trend from 24% in 2015 to 15% in 2018. The predictive mortality variables with statistically significant association were lactate > 2 mmol/L, creatinine > 1.6 mg/dL and the need for amines.>5.0%, mortality at the time of chart review 62.0%, and 6-months-post-discharge readmission 47.7%. CONCLUSIONS: The implementation of Sepsis Code decreases the mortality of patients with sepsis and septic shock. The presence of a lactate > 2 mmol/L, creatinine > 1.6 mg/dL and/or the need to administer amines in the first 24 hours, are associated with an increase in mortality in the patient with sepsis.
Subject(s)
Sepsis , Shock, Septic , Aftercare , Hospital Mortality , Humans , Patient Discharge , Retrospective Studies , Tertiary Care CentersABSTRACT
OBJECTIVE: To study the anatomical correlation between the arcuate eminence and the superior semicircular canal. MATERIAL AND METHODS: A study of the height of the arcuate eminence was carried out in 295 temporal bones. In addition, 30 temporals with different heights of the arcuate eminence (10 flat, 10 prominent and 10 very prominent) were randomly selected and radiological tests were performed by computed tomography (Pöschl projection) and subsequent dissection by milling until the apex of the superior semicircular canal was found, establishing, with both methods, the anatomical relationship with the arcuate eminence. RESULTS: The arcuate eminence was classified as: smooth, when there was no relief (1.7%); flat, measured less than 1 mm (20.3%), prominent, measured between 1 and 2 mm, in (62%), and very prominent, measured above 2 mm (12.6%). The tomographic study (CT) and its subsequent dissection by bone milling showed a direct relationship between the arcuate eminence and the semicircular canal only when it was flat, while the rest of the types corresponded to the presence of pneumatized peri-labyrinthine cells and/or cancellous bone without a direct anatomical relationship with the apex of the superior semicircular canal. CONCLUSION: The correlation between the arcuate eminence and the superior semicircular canal is direct only when it is flat (1 mm), being related to peri-labyrinthine cells and/or cancellous bone when the arcuate eminence is prominent or very prominent.
Subject(s)
Petrous Bone , Semicircular Canals , Dissection , Semicircular Canals/diagnostic imaging , Temporal Bone , Tomography, X-Ray ComputedABSTRACT
INTRODUCTION: Acute total occlusion of the left main coronary artery (ATOLMA) usually leads to a catastrophic presentation. Prediction of ATOLMA by electrocardiogram (ECG) may contribute to early detection and reperfusion. Limited data have been reported previously. This study aims to identify the admission 12leads ECG features that can predict the presence of ATOLMA and in-Hospital mortality in these patients. METHODS: The admission ECGs findings in 24 patients from the previously reported ATOLMA multicenter registry were compared to the ECGs findings in 15 patients with an acute subtotal occlusion of the left main (ASOLMA) and to 15 patients with anterior ST-elevation myocardial infarction of the proximal left anterior descending (LADp-STEMI). RESULTS: Some ECG features at presentation can predict an ATOLMA: QRS left axis deviation (-61.17 ± 9 degrees); ST-segment elevation in aVL (1.9 ± 0.65 mm); absence of ST-segment elevation in V1 (0.0 ± 0.6 mm); bifascicular block (58%); fragmented QRS (62.5%); prolongation of QTc interval (465 ± 19 ms) and of QRS interval (136 ± 12 mm). The multivariate analysis found that the independent predictors to distinguish ATOLMA from ASOLMA were aVL ST-segment deviation (OR 5.6(95% CI 1.5-21), p = 0.01) and absence of V1 ST-segment elevation (OR 27(95% CI 1.4-52), p = 0.01); and from LADp-STEMI was QRS width (OR 1.1(95% CI 1.02-1.2), p = 0.02). Fragmented QRS was the only independent predictor of in-hospital mortality in ATOLMA (OR 0.125(95% CI 0.01-0.81), p = 0.03). CONCLUSIONS: aVL ST-segment elevation, the absence of V1 ST-segment elevation, left axis deviation, the presence of bifascicular block, and prolongation of QRS and QTc interval are predictors of ATOLMA. Fragmented QRS predicts in-hospital mortality in ATOLMA.
Subject(s)
Coronary Occlusion , Myocardial Infarction , Bundle-Branch Block , Coronary Occlusion/diagnosis , Electrocardiography , Humans , RegistriesABSTRACT
Pharyngitis and tonsillitis are the most common acute respiratory infections (ARIs) in children aged ≤5 years. The analysis of published data showed that some probiotics could decrease the frequency and number of days with ARIs. This study evaluated the safety and efficacy of Limosilactobacillus reuteri ATCC PTA 5289 and DSM 17938 to reduce the duration and severity of ARI symptoms. This randomised controlled trial included children aged from 6 months to 5 years, with pharyngitis or tonsillitis, who were randomised to receive a probiotic product containing L. reuteri ATCC PTA 5289 and L. reuteri DSM 17938 or placebo, as drops, ingested orally for 10 days as adjuvants to the use of non-steroidal anti-inflammatory drugs. The main outcomes were the duration and severity of ARI symptoms. The secondary outcomes were changes in salivary immunoglobulin A and inflammatory biomarkers. There was no fever on day 2 and subsequent days in the L. reuteri group (37.3 ±0.5 °C vs 38.6±0.3 °C, P<0.05). Beginning on day 3, the severity of sore throat (5±0.9 vs 8±1.2, P<0.05) was lower in the L. reuteri group. Significant differences in the days with runny nose, nasal congestion, days of non-programmed visits to the medical office or emergency department, levels in tumoral necrosis factor-alpha (TNF-alpha) and related costs of treatment were observed in the L. reuteri group. The frequency of adverse events was similar between the groups. Therefore, L. reuteri ATCC PTA 5289 combined with L. reuteri DSM 17938 is a safe and effective adjunct to reduce the symptoms of pharyngitis or tonsillitis in children.
Subject(s)
Limosilactobacillus reuteri/physiology , Pharyngitis/drug therapy , Probiotics/administration & dosage , Tonsillitis/drug therapy , Child, Preschool , Female , Humans , Immunoglobulin A/immunology , Infant , Male , Pharyngitis/immunology , Saliva/immunology , Tonsillitis/immunology , Tumor Necrosis Factor-alpha/immunologyABSTRACT
OBJECTIVES: To determine the outcome predictors of in-hospital mortality in acute total occlusion of the left main coronary artery (ATOLMA) patients referred to emergent angioplasty and to describe the clinical presentation and the long-term outcome of these patients. BACKGROUND: ATOLMA is an uncommon angiographic finding that usually leads to a catastrophic presentation. Limited and inconsistent data have been previously reported regarding true ATOLMA, yet comprehensive knowledge remains scarce. METHODS: This is a multicenter retrospective cohort that includes patients presenting with myocardial infarction due to a confirmed ATOLMA who underwent emergency percutaneous coronary intervention (PCI). RESULTS: In the period of the study, 7930 emergent PCI were performed in the five participating centers, and 46 of them had a true ATOLMA (0.58%). At admission, cardiogenic shock was present in 89% of patients, and cardiopulmonary resuscitation was required in 67.4%. All the patients had right dominance. Angiographic success was achieved in 80.4% of the procedures, 13 patients (28.2%) died during the catheterization, and the in-hospital mortality rate was 58.6% (27/46). At one-year and at the final follow-up, 18 patients (39%) were alive, including four cases successfully transplanted. Multivariate analysis showed that postprocedural TIMI flow was the only independent predictor of in-hospital mortality (OR 0.23, (95% CI 0.1-0.36), p < 0.001). CONCLUSIONS: Our study confirms that the clinical presentation of ATOLMA is catastrophic, presenting a high in-hospital mortality rate; nevertheless, primary angioplasty in this setting is feasible. Postprocedural TIMI flow resulted as the only independent predictor of in-hospital mortality. In-hospital survivors presented an encouraging outcome. ATOLMA and left dominance could be incompatible with life.
Subject(s)
Angioplasty, Balloon, Coronary , Coronary Occlusion , Coronary Vessels/pathology , Myocardial Infarction , Aged , Angioplasty, Balloon, Coronary/adverse effects , Angioplasty, Balloon, Coronary/methods , Angioplasty, Balloon, Coronary/mortality , Catastrophic Illness , Coronary Occlusion/complications , Coronary Occlusion/diagnosis , Female , Hospital Mortality , Humans , Male , Middle Aged , Myocardial Infarction/etiology , Myocardial Infarction/mortality , Prognosis , Registries/statistics & numerical data , Shock, Cardiogenic/etiology , Shock, Cardiogenic/mortality , Spain/epidemiology , Treatment OutcomeABSTRACT
BACKGROUND: The study of the association between superior semicircular canal and other dehiscences in the temporal bone. MATERIALS AND METHODS: We have studied computed tomography of radiologically diagnosed people with superior or posterior semicircular canal dehiscences, in four health centres. In addition, we have studied one isolated human temporal bone, one skull and one cadaver head belonging to the collection of the Department of Human Anatomy and Histology of the University of Zaragoza that had dehiscence in the superior semicircular canal. RESULTS: The most frequent association that we observed was between superior semicircular canal dehiscence and tegmen tympani dehiscence (37.33%). Three cases (two clinical cases and one isolated temporal bone) showed multiple associated dehiscences (tegmen tympani, mastoid antrum, posterior semicircular canal, internal auditory canal, glenoid cavity, tympanum bone and geniculate ganglion) associated with superior semicircular canal dehiscence. CONCLUSIONS: When the superior semicircular canal dehiscence is associated to other in the petrous bone (tegmen tympani, mastoid antrum, posterior semicircular canal, internal auditory canal) could be grouped into the same syndrome called "otic capsule syndrome", since they have the same origin and common aetiology (otic capsule).
Subject(s)
Semicircular Canal Dehiscence , Ear, Middle , Humans , Semicircular Canals/diagnostic imaging , Temporal Bone/diagnostic imaging , Tomography, X-Ray ComputedABSTRACT
BACKGROUND: The incidence of incisional hernia in patients with peritoneal surface malignancies treated by cytoreduction plus hyperthermic intraperitoneal chemotherapy (HIPEC) remains unclear, and the criteria commonly used to indicate their repair cannot be applied in these patients. The objective of this work was to analyze the incidence of incisional hernias in these patients, identify the risk factors associated with their appearance, and propose an algorithm for their management. METHODS: We analyzed a series of patients with malignant pathologies of the peritoneal surface treated by cytoreduction with peritonectomy and HIPEC procedures between January 2008 and June 2017. Only patients with a minimum postoperative follow-up period of 12 months were included. RESULTS: Our series included 282 patients, 28 (10%) of whom developed an incisional hernia during the follow-up period. Fifty-one patients, all with ovarian cancer with peritoneal dissemination, did not receive HIPEC after cytoreduction as they were part of the control arm of the CARCINOHIPEC clinical trial (NCT02328716) or because they did not provide specific informed consent. In the multivariate analysis, treatment with HIPEC (OR 2.56, 95% CI [1.57, 4.31], p = 0.032) and the administration of preoperative systemic chemotherapy (OR = 1.59, 95% CI [1.26, 3.58], p = 0.041) were found to be independent factors related to the appearance of an incisional hernia. CONCLUSIONS: The incidence of incisional hernia after cytoreduction and HIPEC is within the ranges described in the literature for other abdominal surgery procedures. The use of systemic chemotherapy and treatment with HIPEC, in particular, were identified as factors related to their occurrence.
Subject(s)
Antineoplastic Agents/adverse effects , Cytoreduction Surgical Procedures/adverse effects , Hyperthermic Intraperitoneal Chemotherapy/adverse effects , Incisional Hernia/epidemiology , Peritoneal Neoplasms/surgery , Adolescent , Adult , Aged , Algorithms , Antineoplastic Agents/administration & dosage , Female , Herniorrhaphy , Humans , Incidence , Incisional Hernia/etiology , Incisional Hernia/surgery , Middle Aged , Ovarian Neoplasms/drug therapy , Ovarian Neoplasms/pathology , Ovarian Neoplasms/surgery , Peritoneal Neoplasms/drug therapy , Peritoneal Neoplasms/secondary , Peritoneum/pathology , Peritoneum/surgery , Retrospective Studies , Risk Factors , Spain/epidemiology , Young AdultABSTRACT
One of the main challenges in the food industry is to design strategies for the successful incorporation of natural sources of bioactive compounds. Recently, yogurts and other fermented dairy beverages have been proposed as ideal carriers of such bioactive compounds such as fatty acids and antioxidants that could improve consumers' health. However, the incorporation of new ingredients causes functional and structural modifications that may affect the consumers' preferences. In this work, a dairy beverage model supplemented with oleic acid has been designed by partial substitution of milk by Candida utilis single-cell protein extract. The changes in the structural properties of this new beverage were evaluated by following the fermentation process, pH, aggregate size, microstructure, and changes in rheological properties. Furthermore, molecular dynamics simulations were carried out to analyze the interaction between its main components. Our data revealed that samples with a percentage of milk substitution of 30% showed a higher viscosity as compared with the other percentages and less viscosity than the control (no substitution). These samples were then selected for fortification by incorporating oleic acid microcapsules. A concentration of 1.5 g/100 g was shown to be the optimal quantity of microcapsules for oleic acid supplementation. Molecular dynamic simulations revealed glutathione as an important component of the micro-gel structure. The present study forms the basis for novel studies where Candida utilis single-cell protein and microencapsulated essential oils could be used to design innovative bioproducts.
Subject(s)
Beverages/analysis , Candida/chemistry , Dietary Proteins/chemistry , Oleic Acid/chemistry , Animals , Antioxidants/analysis , Dietary Supplements , Fatty Acids/analysis , Fermentation , Glutathione/metabolism , Hydrogen-Ion Concentration , Milk/chemistry , Oils, Volatile/chemistry , Rheology , ViscosityABSTRACT
OBJECTIVE: To assess the impact of the first months of application of a Code Sepsis in a high complexity hospital, analyzing patient´s epidemiological and clinical characteristics and prognostic factors. METHODS: A long-term observational study was carried out throughout a consecutive period of seven months (February 2015 - September 2015). The relationship with mortality of risk factors, and analytic values was analyzed using uni- and multivariate analyses. RESULTS: A total of 237 patients were included. The in-hospital mortality was 24% at 30 days and 27% at 60 days. The mortality of patients admitted to Critical Care Units was 30%. Significant differences were found between the patients who died and those who survived in mean levels of creatinine (2.30 vs 1.46 mg/dL, p <0.05), lactic acid (6.10 vs 2.62 mmol/L, p <0.05) and procalcitonin (23.27 vs 12.73 mg/dL, p<0.05). A statistically significant linear trend was found between SOFA scale rating and mortality (p<0.05). In the multivariate analysis additional independent risk factors associated with death were identified: age > 65 years (OR 5.33, p <0.05), lactic acid > 3 mmol/L (OR 5,85, p <0,05), creatinine > 1,2 mgr /dL (OR 4,54, p <0,05) and shock (OR 6,57, P <0,05). CONCLUSIONS: The epidemiological, clinical and mortality characteristics of the patients in our series are similar to the best published in the literature. The study has identified several markers that could be useful at a local level to estimate risk of death in septic patients. Studies like this one are necessary to make improvements in the Code Sepsis programs.
Subject(s)
Clinical Protocols , Sepsis/therapy , APACHE , Adult , Age Factors , Aged , Aged, 80 and over , Biomarkers , Creatinine/blood , Female , Hospital Mortality/trends , Hospitals, University , Humans , Lactic Acid/blood , Male , Middle Aged , Procalcitonin/blood , Prognosis , Risk Factors , Sepsis/mortality , Treatment OutcomeABSTRACT
PURPOSE: The objective of the study was to analyze the experience of the Department of Surgery of two institutions of high complexity in Colombia, with the extra peritoneal ventral hernia repair by laparoscopy during the last 2 years and characterize the clinical and surgical aspects most relevant in the procedures performed. METHODS: Observational, descriptive, retrospective study, case series type: collection of data by clinical history and analysis thereof including calculation of frequency and central tendency measurements. RESULTS: 59 Cases of Ventral Hernia Repair by laparoscopy, 41 with Transabdominal Preperitoneal approach and 18 totally Extraperitoneal. In total, 7 complications were presented as follows: 1 Case of recurrence, 1 case of chronic pain, 2 complications Dindo-Clavien IIIa and 1 complication IIIb. CONCLUSIONS: The repair of the ventral hernia by Extraperitoneal route is an innovative approach of increasing popularity, which avoids the contact of the mesh with the intestines, thus avoiding the potential complications that this situation generates with good outcomes and at a lower cost.
Subject(s)
Hernia, Ventral/surgery , Herniorrhaphy , Laparoscopy/methods , Postoperative Complications , Adult , Colombia/epidemiology , Female , Hernia, Ventral/epidemiology , Herniorrhaphy/adverse effects , Herniorrhaphy/instrumentation , Herniorrhaphy/methods , Humans , Male , Middle Aged , Outcome and Process Assessment, Health Care , Peritoneum/surgery , Postoperative Complications/diagnosis , Postoperative Complications/epidemiology , Retrospective Studies , Surgical MeshABSTRACT
Lutetium oxyorthosilicate (LSO) or lutetium yttrium oxyorthosilicate (LYSO) are the scintillator materials most widely used today in PET detectors due to their convenient physical properties for the detection of 511 keV annihilation photons. Natural lutetium contains 2.6% of 176Lu which decays beta to excited states of 176Hf producing a constant background signal. Although previous works have studied the background activity from LSO/LYSO, the shape of the spectrum, resulting from ß-particle and γ radiation self-detection, has not been fully explained. The present work examines the contribution of the different ß-particle and γ-ray interactions to provide a fuller comprehension of this background spectrum and to explain the differences observed when using crystals of different sizes. To this purpose we have shifted the continuous ß-particle energy spectrum of 176Lu from zero to the corresponding energy value for all combinations of the isomeric transitions of 176Hf (γ-rays/internal conversion). The area of each shifted ß-spectrum was normalized to reflect the probability of occurrence. To account for the probability of the γ-rays escaping from the crystal, Monte Carlo simulations using PENELOPE were performed in which point-like sources of monoenergetic photons were generated, inside LYSO square base prisms (all 1 cm thick) of different sizes: 1.0 cm to 5.74 cm. The analytic distributions were convolved using a varying Gaussian function to account for the measured energy resolution. The calculated spectra were compared to those obtained experimentally using monolithic crystals of the same dimensions coupled to SiPM arrays. Our results are in very good agreement with the experiment, and even explain the differences observed due to crystal size. This work may prove useful to calibrate and assess detector performance, and to measure energy resolution at different energy values.
ABSTRACT
Con la Telemedicina pueden desarrollarse sistemas de telediagnóstico ventajosos para mejorar la atención de la salud de poblaciones remotas que no tienen acceso a especialistas. Este estudio realizado por la Unidad de Telemedicina del Ministerio de Salud Pública y Bienestar Social (MSPBS) en colaboración con el Dpto. de Ingeniería Biomédica e Imágenes del Instituto de Investigaciones en Ciencias (IICS-UNA) y la Universidad del País Vasco (UPV/EHU) sirvió para evaluar la utilidad de un sistema de telediagnóstico para la cobertura universal en la salud pública. Para el efecto se analizaron los resultados obtenidos por el sistema de telediagnóstico implementado en 56 hospitales del MSPBS. En dicho sentido se analizaron 293.142 diagnósticos remotos realizados entre enero del 2014 y septiembre de 2017. Del total, el 37,29 % (109.311) correspondieron a estudios de tomografía, 61,44 % (180.108) a electrocardiografía (ECG), 1,26 % (3.704) a electroencefalografía (EEG) y 0,01 % (19) a ecografía. No se observaron diferencias significativas entre el diagnóstico remoto y el diagnóstico "cara a cara". Con el diagnostico remoto se logró una reducción del coste que supone un beneficio importante para cada ciudadano del interior del país. Los resultados obtenidos evidencian que la telemedicina puede contribuir para mejorar significativamente la cobertura universal de los servicios diagnósticos y programas de salud, maximizando el tiempo del profesional y su productividad, aumentando el acceso y la equidad, y disminuyendo los costos. Sin embargo antes de realizar su implementación sistemática se deberá realizar una contextualización con el perfil epidemiológico regional. Palabras claves: Telemedicina; Cobertura Universal; Telediagnóstico; TICs en Salud; Innovación Tecnológica.
Through the telemedicine, advantageous telediagnostic systems can be developed to improve the health care of remote populations that don`t have access to specialists. This study was carried out by the Telemedicine Unit of the Ministry of Public Health and Social Welfare (MSPBS) in collaboration with the Department of Biomedical Engineering and Imaging of the Health Science Research Institute (IICS-UNA) and the University of the Basque Country (UPV / EHU) to evaluate the utility of a telediagnostic system for universal coverage in public health. For this purpose, the results obtained by the telediagnosis system implemented in 56 MSPBS hospitals were analyzed. In that sense, 293,142 remote diagnoses were performed between January 2014 and September 2017. Of the total, 37.29% (109,311) corresponded to tomography studies, 61.44% (180.108) to electrocardiography (ECG), 1.26% (3,704) to electroencephalography (EEG) and 0.01% (19) to ultrasound. There were no significant differences between the remote and the "face to face" diagnosis. With the remote diagnosis a reduction of the cost was obtained, that supposes an important benefit for each citizen of the interior of the country. The results show that the telemedicine can contribute to improve significantly the universal coverage of diagnostic services and health programs, maximizing professional time and productivity, increasing access and equity, and reducing costs. However, before carrying out its systematic implementation, a contextualization with the regional epidemiological profile must be performed. Key words: Telemedicine; Universal Coverage; Telediagnosis; ICT in Health; Technological Innovation.
ABSTRACT
This paper presents the results of implementing an extrajudicial environmental mediation procedure in the socioenvironmental conflict associated with routine operation of the El Cabril Disposal Facility for low- and medium- activity radioactive waste (Spain). We analyse the socio-ethical perspective of this facility's operation with regard to its nearby residents, detailing the structure and development of the environmental mediation procedure through the participation of society and interested parties who are or may become involved in such a conflict. The research, action, and participation method was used to apply the environmental mediation procedure. This experience provides lessons that could help improve decision-making processes in nuclear or radioactive facility decommissioning projects or in environmental remediation projects dealing with ageing facilities or with those in which nuclear or radioactive accidents/incidents may have occurred.
Subject(s)
Environmental Restoration and Remediation/methods , Radiation Monitoring , Radioactive Waste , Environmental Restoration and Remediation/standards , Industry , Radiation Protection/methods , Radioactivity , SpainABSTRACT
En Chile el tema de la despenalización del aborto en sus tres causales ha abierto un nuevo horizonte de análisis y reflexión para los sectores de salud y educación en términos de formación de nuevos profesionales. Esto ha impulsado a los profesores de la Escuela de Enfermería de la Universidad Católica a reflexionar al respecto, teniendo en consideración sus valores, antecedentes históricos, el perfil del egresado de la Carrera y el marco antropológico filosófico que guía nuestro actuar como profesionales de enfermería y enfermería obstétrica. El objetivo del presente documento es compartir la postura de la Escuela de Enfermería frente al proyecto de ley que despenaliza el aborto en Chile, considerando que este es un tema complejo y controversial en todo el mundo, incluso en aquellos países en que existen leyes que lo permiten. Es por esto que como Escuela de Enfermería en la que se forman futuros profesionales que se enfrentarán a este posible escenario sanitario, se ha querido contribuir a la reflexión de este tema importante y directamente relacionado a las buenas prácticas y el cuidado de las personas. Se debe tener presente que el cuidado de enfermería, debe orientarse a velar por la vida, cuidar y tutelar a la persona en su dignidad desde el momento de la concepción, a través de todo el ciclo de vida y, sobre todo, en momentos de mayor vulnerabilidad.
In Chile, a decriminalization of abortion has been under discussion for some three years in a bill proposed. This has animated the professors of the School of Nursing of the Catholic University to reflect on this, taking into consideration their values, historical background, career profile and the philosophical anthropological framework that guides our acting as nursing professionals in the scope of good practices in the care of people. The objective of this document is to share the position of the School of Nursing in front of the bill that decriminalizes abortion in Chile, considering that this is an ethical and controversial topic worldwide, even in countries where there are laws that allow. This is why as a Nursing School in which future professionals are trained to face this possible health scenario, we wanted to contribute to the reflection of this important and complex issue. It should be borne in mind that nursing care should be oriented to care for life, to care for and protect the person in his dignity from the moment of conception, throughout the life cycle and, especially, in moments of Greater vulnerability.
Subject(s)
Humans , Public Opinion , Schools, Nursing , Abortion, Induced/legislation & jurisprudence , Vulnerable Populations , Risk Groups , Chile , Nursing CareABSTRACT
The discovery of a tumor as a primary schwannoma in the thyroid gland is rare (Andrion et al. in Virchows Arch 413:367-372, 1988). It represents less than 1 % of mesenchymal neoplasms of this gland. Therefore, few cases of this type are described in medical literature (Aron et al. in Cytopathology 16:206-209, 2005; Cashman et al. in Medscape J Med 10(8):201, 2008; Coleman et al. in AJR Am J Roentgenol 140:383-7, 1983). In this article, we introduce the clinical case of a 27-year-old female patient, who presented a nodular mass located in the neck region. This mass was not associated with other symptoms and during the imagistic investigation it appeared to be a thyroglossal duct cyst. A fine needle aspiration biopsy was performed which revealed benign mesenchymal cells. After a pathology study of the piece resected through a thyroidectomy, it was confirmed that the tumor had neural characteristics, the final diagnosis being a primary schwannoma. The importance of a cytology study is emphasized, since in this case, it made it possible to accurately diagnose a mesenchymal tumor, despite their low frequency. It constitutes a highly useful tool for diagnosing non-epithelial neoplasia of the thyroid gland.
Subject(s)
Neurilemmoma/pathology , Thyroid Neoplasms/pathology , Adult , Biopsy, Fine-Needle , Female , Humans , Neurilemmoma/surgery , Thyroid Neoplasms/surgery , ThyroidectomyABSTRACT
Cystic echinococcosis is the infection by the larvae of cestode parasites belonging to the Echinococcus granulosus sensu lato species complex. Local host responses are strikingly subdued in relation to the size and persistence of these larvae, which develop within mammalian organs as 'hydatid cysts' measuring up to tens of cm in diameter. In a context in which helminth-derived immune-suppressive, as well as Th2-inducing, molecules garner much interest, knowledge on the interactions between E. granulosus molecules and the immune system lags behind. Here, we discuss what is known and what are the open questions on E. granulosus molecules and structures interacting with the innate and adaptive immune systems, potentially or in demonstrated form. We attempt a global biological approach on molecules that have been given consideration primarily as protective (Eg95) or diagnostic antigens (antigen B, antigen 5). We integrate glycobiological information, which traverses the discussions on antigen 5, the mucin-based protective laminated layer and immunologically active preparations from protoscoleces. We also highlight some less well-known molecules that appear as promising candidates to possess immune-regulatory activities. Finally, we point out gaps in the molecular-level knowledge of this infectious agent that hinder our understanding of its immunology.