The protamines of the noble false widow spider Steatoda nobilis provide an example of liquid-liquid phase separation chromatin transitions during spermiogenesis.

While there is extensive information about sperm nuclear basic proteins (SNBP) in vertebrates, there is very little information about Arthropoda by comparison. This paper aims to contribute to filling this gap by analyzing these proteins in the sperm of the noble false widow spider Steatoda nobilis (Order Araneae, Family Theridiidae). To this end, we have developed a protein extraction method that allows the extraction of cysteine-containing protamines suitable for the preparation and analysis of SNBPs from samples where the amount of starting tissue material is limited. We carried out top-down mass spectrometry sequencing and molecular phylogenetic analyses to characterize the protamines of S. nobilis and other spiders. We also used electron microscopy to analyze the chromatin organization of the sperm, and we found it to exhibit liquid-liquid phase spinodal decomposition during the late stages of spermiogenesis. These studies further our knowledge of the distribution of SNBPs within the animal kingdom and provide additional support for a proposed evolutionary origin of many protamines from a histone H1 (H5) replication-independent precursor.

Protamines and the sperm nuclear basic proteins Pandora's Box of insects.

Insects are the largest group of animals when it comes to the number and diversity of species. Yet, with the exception of Drosophila, no information is currently available on the primary structure of their sperm nuclear basic proteins (SNBPs). This paper represents the first attempt in this regard and provides information about six species of Neoptera: Poecillimon thessalicus, Graptosaltria nigrofuscata, Apis mellifera, Nasonia vitripennis, Parachauliodes continentalis, and Tribolium castaneum. The SNBPs of these species were characterized by acetic acid urea gel electrophoresis (AU-PAGE) and high-performance liquid chromatography fractionated. Protein sequencing was obtained using a combination of mass spectrometry sequencing, Edman N-terminal degradation sequencing and genome mining. While the SNBPs of several of these species exhibit a canonical arginine-rich protamine nature, a few of them exhibit a protamine-like composition. They appear to be the products of extensive cleavage processing from a precursor protein which are sometimes further processed by other post-translational modifications that are likely involved in the chromatin transitions observed during spermiogenesis in these organisms.

A rare case of Salmonella-associated acute pancreatitis in a patient with ulcerative colitis.

Inflammatory bowel disease is a known risk factor for enteric infections such as Salmonella. This infection can affect almost all major organs. Acute Salmonella pancreatitis is a rare complication. This is the case of a 61-year-old man with ulcerative colitis who developed acute pancreatitis complicating Salmonella infection.

Albocycline Is the Main Bioactive Antifungal Compound Produced by Streptomyces sp. OR6 against Verticillium dahliae.

Verticillium wilt is a soil-borne fungal disease that affects olive trees (Olea europaea) and poses a serious threat to their cultivation. The causal agent of this disease is Verticillium dahliae, a pathogen that is difficult to control with conventional methods. Therefore, there is a need to explore alternative strategies for the management of Verticillium wilt. In this study, we aimed to isolate and characterize actinobacteria from the rhizosphere of olive trees that could act as potential biocontrol agents against V. dahliae. We selected a Streptomyces sp. OR6 strain based on its in vitro antifungal activity and its ability to suppress the pathogen growth in soil samples. We identified the main active compound produced by this strain as albocycline, a macrolide polyketide with known antibacterial properties and some antifungal activity. Albocycline was able to efficiently suppress the germination of conidiospores. To our knowledge, this is the first report of albocycline as an effective agent against V. dahliae. Our results suggest that Streptomyces sp. OR6, or other albocycline-producing strains, could be used as a promising tool for the biological control of Verticillium wilt.

A slightly different polyp: melanoma metastasis diagnosed by colonoscopy.

Melanoma metastases are rare in the colon. Its diagnosis is difficult because they do not usually produce symptoms. They can present through the endoscopic image of a non-pigmented polyp. This is the case of a 56-year-old woman diagnosed with melanoma metastasis through polypectomy of an unusual-looking polyp.

Assessing on-road emissions from urban buses in different traffic congestion scenarios by integrating real-world driving, traffic, and emissions data.

In recent years, the integration of traffic simulators and emission models has become the most preferred option for evaluating vehicle emissions in different traffic states. However, the definition of a 'traffic condition' is often subjective, as driving patterns can vary significantly with the spatial domain of study. Alternatively, the implementation of 'Cooperative Intelligent Transport Systems' has led to a growing variety of devices being installed, both on the road and in public transport vehicles for monitoring traffic-flow conditions and vehicle speeds in cities. This study purposed an original approach for integrating real-world emissions (as an micro-emission model), real-world driving profiles, and city traffic sensor data to assess the effects of traffic congestion at the route level on emissions from urban buses in Madrid (Spain). The definition of the traffic scenarios was based on a K-means clustering analysis by linking stationary (from city sensors) and dynamic (from bus driving profiles) congestion indicators. In parallel, a micro-emissions model based on vehicle-specific power (VSP) methodology was used to model second-by-second CO2 and NOx emissions from individual trips of the diesel and compressed natural gas (CNG) buses. Finally, the clustering and modelled emissions data were combined. A comparison of the free flow and the severe congestion scenarios showed that the average speed of the route decreased by approximately 50 %, and the number of stops per kilometre increased by a multiple of 1.5; furthermore, the CO2 and NOx emissions from buses increased by approximately 50 % and 85 %, respectively. The diesel bus showed a lower sensitivity to variations in the congestion level at the route level, although the low-NOx emissions from the CNG buses were evident for all traffic scenarios. The results of this study, based on extensive real-world data, can be used to develop high-resolution vehicle emissions inventories.

Inflammatory Response, Immunosuppression and Arginase Activity after Cardiac Surgery Using Cardiopulmonary Bypass.

Background: Major surgeries suppress patients' cellular immunity for several days, but the mechanisms underlying this T-cell dysfunction are not well understood. A decreased L-Arginine (L-Arg) level may inhibit T-cell function. Arginase 1 (Arg 1) is induced after traumatic injury, leading to molecular changes in T cells, including decreased expression of cell surface T-cell receptors (TCRs) and a loss in CD3ζ chain expression. In this study, we examined the temporal patterns of CD3ζ expression and Arg 1 activity in patients undergoing cardiac surgery with cardiopulmonary bypass (CPB). Methods: We determined the CD3ζ chain expression; the Arg 1 activity; and the leukocyte, neutrophil and lymphocyte levels of patients on the day before surgery and at 24, 48 and 72 h after surgery. Results: Fifty adult patients scheduled for elective cardiac surgery with CPB were eligible for enrolment. Arginase activity was significantly increased between the day before surgery and at 24, 48 and 72 h after surgery (p < 0.01), and CD3ζ expression was significantly decreased between the day before surgery and at 24, 48 and 72 h after surgery (p < 0.001). We observed significant leukocytosis, neutrophilia and lymphopenia after surgery. Conclusions: The decreased CD3ζ chain expression could be due to the increased Arg 1 activity secondary to the activation of neutrophils in cardiac surgery under CPB. These findings could explain the limited immune-system-mediated organ damage resulting from systemic inflammatory response to major cardiac surgery with CPB.

Influencia de los ítems respiratorios del COPD Assessment Test (CAT) en la decisión de ingreso de las agudizaciones de enfermedad pulmonar obstructiva crónica (EPOC) atendidos en urgencias hospitalarias / Influence of the COPD Assessment Test respiratory item score on the decision to hospitalize patients with disease exacerbation in a hospital emergency department

Objetivos. El CAT (COPD Assessment Test) es un cuestionario de calidad de vida que mide el impacto que la enfermedad pulmonar obstructiva crónica (EPOC) está teniendo en el bienestar y vida diaria de los pacientes. Consta de 8 ítems divididos en 4 respiratorios y 4 no respiratorios. Conocer el impacto de las puntuaciones de los ítems respiratorios y no respiratorios en la puntuación CAT total, en diferentes momentos de la exacerbación de EPOC (24 horas antes de la exacerbación o basal, en la exacerbación, a los 15 días y a los 2 meses). Secundariamente, se valoró la in- fluencia de los ítems respiratorios de la puntuación CAT total, en la decisión de ingreso de los pacientes atendidos por exacerbación de EPOC (EA-EPOC) en un servicio de urgencias hospitalario (SUH). Método. Estudio de cohortes prospectivo. Se reclutaron pacientes que acudían al SUH con síntomas compatibles con EA-EPOC. La variable “Paciente respiratorio altamente sintomático”(PRAS) se definió como el paciente que tiene 3 puntos o más en al menos 3 de los 4 ítems respiratorios del CAT basal. Las variables de resultado fueron para el primer objetivo: la puntuación CAT total y desglosada por ítems, en los 4 momentos estudiados. Para el segundo objetivo fue el ingreso hospitalario. Resultados. Se incluyeron 587 pacientes. La media de la puntuación CAT total basal fue 13,48 (7,29), en urgencias fue 24,86 (7,25), a los 15 días fue 14,7 (7,47) y a los 2 meses 13,45 fue (7,36). La proporción sobre la puntuación CAT basal total de los ítems respiratorios fue de 53,4% (20,76) y en el momento de llegar a urgencias del 48,2% (11,47). Los PRAS fueron 82 (14,0%). Ingresaron 359 pacientes (61,2%). [...]

Objectives. The COPD Assessment Test (CAT) measures quality of life in patients with chronic obstructive pulmonary disease (COPD) as well as disease impact on activities of daily living. The questionnaire consists of 8 items related to breathing (cough, phlegm, chest tightness, and breathlessness) and other symptoms (low energy level, sleep disturbances, limitations on daily activities, and confidence when leaving the home). We investigated the relative impact of respiratory versus nonrespiratory scoring on the total CAT score at different moments in the course of COPD exacerbations: baseline (24 hours before an exacerbation), during the exacerbation, 15 days later, and 2 months later. To assess the influence of the respiratory item score on decisions to hospitalize patients treated for exacerbated COPD in our hospital emergency department (ED). Methods. Prospective cohort study. We recruited patients who came to our ED for symptoms consistent with exacerbated COPD. Sociodemographic and clinical data were recorded. Clinical information, including treatments started in the ED and CAT scores, were also recorded. The event was defined as highly symptomatic if the patient’s score was 3 points or higher on at least 3 of the 4 respiratory items at baseline. The outcome measures for the first objective were the total CAT score and item scores at the 4 time points before (baseline), during (ED), and after the exacerbation. The outcome for the second objective was hospital admission. Results. A total of 587 patients were included. The mean (SD) total CAT score was 13.48 (7.29) at baseline, 24.86 (7.25) in the ED, 14.7 (7.47) at 15 days, and 13.45 (7.36) at 2 months. The respiratory item scores accounted for a mean 53.4% (20.76%) of the total score at baseline and 48.2% (11.47%) of the total score in the ED. Eighty-two patients (14.0%) were classified as being highly symptomatic. A total of 359 (61.2%) were admitted. [...]

Influence of the COPD Assessment Test respiratory item score on the decision to hospitalize patients with disease exacerbation in a hospital emergency department. / Influencia de los ítems respiratorios del COPD Assessment Test (CAT) en la decisión de ingreso de las agudizaciones de enfermedad pulmonar obstructiva crónica (EPOC) atendidos en urgencias hospitalarias.

OBJECTIVES: The COPD Assessment Test (CAT) measures quality of life in patients with chronic obstructive pulmonary disease (COPD) as well as disease impact on activities of daily living. The questionnaire consists of 8 items related to breathing (cough, phlegm, chest tightness, and breathlessness) and other symptoms (low energy level, sleep disturbances, limitations on daily activities, and confidence when leaving the home). We investigated the relative impact of respiratory versus nonrespiratory scoring on the total CAT score at different moments in the course of COPD exacerbations: baseline (24 hours before an exacerbation), during the exacerbation, 15 days later, and 2 months later. To assess the influence of the respiratory item score on decisions to hospitalize patients treated for exacerbated COPD in our hospital emergency department (ED). MATERIAL AND METHODS: Prospective cohort study. We recruited patients who came to our ED for symptoms consistent with exacerbated COPD. Sociodemographic and clinical data were recorded. Clinical information, including treatments pleustarted in the ED and CAT scores, were also recorded. The event was defined as highly symptomatic if the patient's score was 3 points or higher on at least 3 of the 4 respiratory items at baseline. The outcome measures for the first objective were the total CAT score and item scores at the 4 time points before (baseline), during (ED), and after the exacerbation. The outcome for the second objective was hospital admission. RESULTS: A total of 587 patients were included. The mean (SD) total CAT score was 13.48 (7.29) at baseline, 24.86 (7.25) in the ED, 14.7 (7.47) at 15 days, and 13.45 (7.36) at 2 months. The respiratory item scores accounted for a mean 53.4% (20.76%) of the total score at baseline and 48.2% (11.47%) of the total score in the ED. Eighty-two patients (14.0%) were classified as being highly symptomatic. A total of 359 (61.2%) were admitted. Predictors of hospital admission were classification as highly symptomatic, odds ratio (OR, 3.045; 95% CI, 1.585-5.852, P .001), dyspnea at rest (OR, 2.906; 95% CI:1.943-4.346, P .001), and start of the following treatments in the ED: oxygen therapy (OR, 4.550; 95% CI, 3.056-6.773; P .0001), diuretic (OR, 1.754; 95% CI, 1.091-2.819; P = .02), and intravenous antibiotics (OR, 1.536; 95% CI, 1.034-2.281; P = .03). The model achieved an area under the receiver operating characteristic curve of 0.80 (95% CI, 0.763-0.836). CONCLUSION: Hospital admission from the ED is highly likely in patients with COPD exacerbation who have high baseline CAT scores, dyspnea at rest in the ED, and require oxygen therapy, diuretics, or intravenous antibiotics in the ED. The total CAT score and scores on respiratory items provide a tool for tailoring pharmacalogic and nonpharmacologic treaments and can facilitate follow-up evaluations.

OBJETIVO: El CAT (COPD Assessment Test) es un cuestionario de calidad de vida que mide el impacto que la enfermedad pulmonar obstructiva crónica (EPOC) está teniendo en el bienestar y vida diaria de los pacientes. Consta de 8 ítems divididos en 4 respiratorios y 4 no respiratorios. Conocer el impacto de las puntuaciones de los ítems respiratorios y no respiratorios en la puntuación CAT total, en diferentes momentos de la exacerbación de EPOC (24 horas antes de la exacerbación o basal, en la exacerbación, a los 15 días y a los 2 meses). Secundariamente, se valoró la influencia de los ítems respiratorios de la puntuación CAT total, en la decisión de ingreso de los pacientes atendidos por exacerbación de EPOC (EA-EPOC) en un servicio de urgencias hospitalario (SUH). METODO: Estudio de cohortes prospectivo. Se reclutaron pacientes que acudían al SUH con síntomas compatibles con EA-EPOC. La variable "Paciente respiratorio altamente sintomático"(PRAS) se definió como el paciente que tiene 3 puntos o más en al menos 3 de los 4 ítems respiratorios del CAT basal. Las variables de resultado fueron para el primer objetivo: la puntuación CAT total y desglosada por ítems, en los 4 momentos estudiados. Para el segundo objetivo fue el ingreso hospitalario. RESULTADOS: Se incluyeron 587 pacientes. La media de la puntuación CAT total basal fue 13,48 (7,29), en urgencias fue 24,86 (7,25), a los 15 días fue 14,7 (7,47) y a los 2 meses 13,45 fue (7,36). La proporción sobre la puntuación CAT basal total de los ítems respiratorios fue de 53,4% (20,76) y en el momento de llegar a urgencias del 48,2% (11,47). Los PRAS fueron 82 (14,0%). Ingresaron 359 pacientes (61,2%). Los predictores de ingreso hospitalario fueron: PRAS (OR 3,045, IC 95%: 1,585-5,852, p 0,001), disnea de reposo (OR 2,906, IC 95%: 1,943-4,346, p 0,001) y algunos tratamientos instaurados en el SUH (oxigenoterapia: OR 4,550, IC 95%: 3,056-6,773, p 0,001; diurético: OR 1,754, IC 95%: 1,091-2,819, p = 0,02; y antibiótico iv: OR 1,536, IC 95%: 1,034-2,281, p = 0,03). Este modelo logra un área bajo la curva COR de 0,80 (IC 95%: 0,763-0,836). CONCLUSIONES: En pacientes con EA-EPOC atendidos en urgencias, la alta puntuación de ítems respiratorios en el CAT basal, la disnea de reposo a su llegada al SUH y varios de los tratamientos instaurados en urgencias (oxigenoterapia, diuréticos y antibioterapia intravenosa) demostraron tener buena capacidad de predicción de ingreso hospitalario. La puntuación CAT total así como la puntuación en los ítems respiratorios del mismo son una herramienta que podría ayudar al clínico a individualizar el tratamiento o los controles posteriores.

Modelling the risk of hospital admission of lab confirmed SARS-CoV-2-infected patients in primary care: a population-based study.

The objectives of this study are to develop a predictive model of hospital admission for COVID-19 to help in the activation of emergency services, early referrals from primary care, and the improvement of clinical decision-making in emergency room services. The method is the retrospective cohort study of 49,750 patients with microbiological confirmation of SARS-CoV-2 infection. The sample was randomly divided into two subsamples, for the purposes of derivation and validation of the prediction rule (60% and 40%, respectively). Data collected for this study included sociodemographic data, baseline comorbidities, baseline treatments, and other background data. Multilevel analyses with generalized estimated equations were used to develop the predictive model. Male sex and the gradual effect of age were the main risk factors for hospital admission. Regarding baseline comorbidities, coagulopathies, cancer, cardiovascular diseases, diabetes with organ damage, and liver disease were among the five most notable. Flu vaccination was a risk factor for hospital admission. Drugs that increased risk were chronic systemic steroids, immunosuppressants, angiotensin-converting enzyme inhibitors, and NSAIDs. The AUC of the risk score was 0.821 and 0.828 in the derivation and validation samples, respectively. Based on the risk score, five risk groups were derived with hospital admission ranging from 2.94 to 51.87%. In conclusion, we propose a classification system for people with COVID-19 with a higher risk of hospitalization, and indirectly with it a greater severity of the disease, easy to be completed both in primary care, as well as in emergency services and in hospital emergency room to help in clinical decision-making.Registration: ClinicalTrials.gov Identifier: NCT04463706.

Anthraquinones as Inhibitors of SOS RAS-GEF Activity.

Recent breakthroughs have reignited interest in RAS GEFs as direct therapeutic targets. To search for new inhibitors of SOS GEF activity, a repository of known/approved compounds (NIH-NACTS) and a library of new marine compounds (Biomar Microbial Technologies) were screened by means of in vitro RAS-GEF assays using purified, bacterially expressed SOS and RAS constructs. Interestingly, all inhibitors identified in our screenings (two per library) shared related chemical structures belonging to the anthraquinone family of compounds. All our anthraquinone SOS inhibitors were active against the three canonical RAS isoforms when tested in our SOS GEF assays, inhibited RAS activation in mouse embryonic fibroblasts, and were also able to inhibit the growth of different cancer cell lines harboring WT or mutant RAS genes. In contrast to the commercially available anthraquinone inhibitors, our new marine anthraquinone inhibitors did not show in vivo cardiotoxicity, thus providing a lead for future discovery of stronger, clinically useful anthraquinone SOS GEF blockers.

Where myth and archaeology meet: Discovering the Gorgon Medusa's Lair.

Here we report the discovery of ceramic fragments that form part of a Gorgoneion, a ceramic image representation of the Gorgon Medusa. The fragments were found in a deep part of Gorham's Cave, well known to ancient mariners as a natural shrine, between the 8th and 2nd century BCE. We discuss the context of this discovery, both within the inner topography of the cave itself, and also the broader geographical context. The discovery is situated at the extreme western end of the Mediterranean Sea, where it meets the Atlantic Ocean. The location was known to ancient mariners as the northern Pillar of Herakles, which marked the end of the known world. We relate the discovery, and its geographical and chronological context, to Greek legends that situated the lair of the Gorgon sisters at a location which coincides with the physical attributes and geographical position of Gorham's Cave. We thus provide, uniquely, a geographical and archaeological context to the myth of Perseus and the slaying of the Gorgon Medusa.

Endoscopist-directed propofol is more efficient than anesthesiologist-administered propofol in patients at low-intermediate anesthetic risk.

OBJECTIVE: Endoscopist-directed propofol (EDP) sedation is becoming more popular, with a reported safety and efficacy similar to anesthesiologist-administered propofol (AAP). The aim of this study is to compare the efficiency of EDP and AAP in patients of low-intermediate anesthetic risk. METHODS: A prospective cost-effectiveness comparison study was conducted. The costs of the endoscopic procedures in the EDP and AAP group were calculated using the full cost methodology after breaking down the endoscopic activity into relative value units to allocate costs in an equitable way. To determine the effectiveness, adverse events related to endoscopic sedation and the number of incomplete procedures were registered for the EDP group and compared with those published by anesthesiologists for AAP. RESULTS: A total of 1165 and 18 919 endoscopic procedures were, respectively, included in the EDP and AAP groups. The average costs of EDP vs. AAP for gastroscopy, colonoscopy and endoscopic ultrasound were &OV0556; 182.81 vs. &OV0556; 332.93, &OV0556; 297.07 vs. &OV0556; 459.76, and &OV0556; 319.92 vs. &OV0556; 485.12, respectively. No significant differences were detected regarding the rate of overall adverse events (4.43 vs. 4.46%) or serious adverse events (0 vs. 0.17%); the rate of arterial hypotension was significantly lower in the EDP group: 0.34 vs. 1.78% [odds ratio (OR), 0.19; 95% confidence interval (CI), 0.08-0.46] and the desaturation rate was significantly lower in the AAP group: 3.26 vs. 1.29% (OR, 2.58; 95% CI, 1.85-3.60). No significant differences were found in terms of incomplete examinations (0.17 vs. 0.14%). CONCLUSION: In patients with low-intermediate anesthetic risk referred for an endoscopic examination, EDP appears to be more efficient than AAP.

Deciphering the Enigma of the Histone H2A.Z-1/H2A.Z-2 Isoforms: Novel Insights and Remaining Questions.

The replication independent (RI) histone H2A.Z is one of the more extensively studied variant members of the core histone H2A family, which consists of many replication dependent (RD) members. The protein has been shown to be indispensable for survival, and involved in multiple roles from DNA damage to chromosome segregation, replication, and transcription. However, its functional involvement in gene expression is controversial. Moreover, the variant in several groups of metazoan organisms consists of two main isoforms (H2A.Z-1 and H2A.Z-2) that differ in a few (3-6) amino acids. They comprise the main topic of this review, starting from the events that led to their identification, what is currently known about them, followed by further experimental, structural, and functional insight into their roles. Despite their structural differences, a direct correlation to their functional variability remains enigmatic. As all of this is being elucidated, it appears that a strong functional involvement of isoform variability may be connected to development.

Spinal anesthesia compared with general anesthesia for neonates with hypertrophic pyloric stenosis. A retrospective study.

BACKGROUND: Studies of spinal anesthesia in children are limited to a reduced group of high-risk patients and it remains relatively underused compared with general anesthesia in this age group in most institutions. In our experience, spinal anesthesia appears to be a good alternative to general anesthesia during pyloromyotomy in neonates and infants. AIMS: The purpose of this study was to retrospectively evaluate respiratory morbidity of spinal anesthesia compared to general anesthesia in infants undergoing pyloromyotomy. METHODS: The University Hospital of Salamanca used spinal or general anesthesia on infants undergoing pyloromyotomy between 2003 and 2017. The primary outcome assessed was the prevalence of apnea. The second one was the prevalence of oxygen saturation below 95%. An analysis was performed using t test or Mann-Whitney U test for continuous variables, and Chi-square for categorical variables. Logistic regression was done to account for differences in demographic and clinical covariates. RESULTS: The study sample consisted of 68 infants and neonates undergoing pyloromyotomy (48 with spinal anesthesia and 20 with general anesthesia). There was a significant difference in apneic episodes after surgery between general (number/percentage = 5/20, 25%) and spinal (number/percentage = 0/48, 0%) groups. Absolute risk reduction is 25% (CI 95%: 6%-44%), P < .001. CONCLUSION: Spinal anesthesia in neonates with hypertrophic pyloric stenosis undergoing pyloromyotomy was a viable alternative to general anesthesia, reducing the respiratory morbidity associated with the latter.

Utilidad del COPD Asessment Test (CAT) para valorar la recuperación y la mala evolución en la exacerbación de la enfermedad pulmonar obstructiva crónica / Chronic obstructive pulmonary disease assessment test: usefulness for monitoring recovery and predicting poor course of disease after exacerbations

Objetivo: Evaluar la utilidad del cuestionario COPD Asessment Test (CAT) para valorar la recuperación de la exacerbación de la enfermedad pulmonar obstructiva crónica (EA-EPOC). Evaluar si la puntuación CAT aumenta la capacidad predictiva de mala evolución de una escala de gravedad para EA-EPOC. Método: Estudio de cohortes prospectivo multicéntrico. Se reclutaron pacientes que consultaron en los servicios de urgencias hospitalarios (SUH) participantes con síntomas compatibles con EA-EPOC. Se recogieron variables sociodemográficas, datos clínicos, cuestionario CAT y escala de disnea modificada del Medical Research Council (mMRC). Las variables resultado fueron: puntuación CAT dos meses tras EA-EPOC y mala evolución durante el ingreso o una semana después en pacientes dados de alta directamente desde los SUH. Resultados: Se incluyeron 501 pacientes. La mediana (RIC) de la puntuación CAT fue de 13 (RIC 7-18) en el día previo a EA-EPOC, 25 (19-30) en el momento de la consulta por EA-EPOC, y 13 (7-18) a dos meses. La diferencia entre la puntuación CAT el día previo a EA-EPOC y 2 meses del cuestionario no fue estadísticamente significativa según la gravedad de la EPOC basal, leve, moderada y grave-muy grave (p = 0,585, p = 0,419 y p = 0,436). Presentaron una mala evolución a corto plazo 91 pacientes (18,2%). La escala de gravedad con el cuestionario CAT obtuvo un área bajo la curva de la característica operativa del receptor de 0,701 (IC 95% 0,640-0,762) y sin el cuestionario CAT de 0,667 (IC 95% 0,616-0,737), esta diferencia no fue estadísticamente significativa (p = 0,088). Conclusiones: La escala CAT puede ser una herramienta de utilidad a la hora de supervisar la recuperación de la EAEPOC. Su inclusión como variable predictora en una escala de gravedad podría ser de utilidad clínica

Objectives: To assess the usefulness of the chronic obstructive pulmonary disease (COPD) assessment test (CAT) for evaluating recovery from an acute exacerbation of chronic COPD. To assess whether the CAT score used along with a COPD exacerbation severity scale can better predict risk of a poor course of disease. Methods: Prospective multicenter cohort study enrolling patients who attended hospital emergency departments with symptoms of exacerbated COPD. We recorded sociodemographic and clinical data and information from 2 questionnaires: the CAT and the modified dyspnea scale of the Medical Research Council (mMRC). Measures of clinical outcome in this study were the CAT score 2 months after the COPD exacerbation and poor course of disease during the hospital stay or 1 week after discharge from the emergency department if patients were not hospitalized. Results: The cohort included 501 patients. The median (interquartile range) CAT score was 13 (7-18) on the day before the exacerbation, 25 (19-30) during emergency care for the exacerbation, and 13 (7-18) 2 months later. The difference between the CAT scores before the exacerbation and 2 months later was not statistically significant when the cohort was stratified by severity of baseline COPD (mild, moderate, and severe/very severe) (P=.585, P=.419, and P=.4357). The short-term course of disease was poor for 91 patients (18.16%). Combining the mMRC and the CAT scores to predict poor short-term outcome gave an area under the receiver operating characteristic curve (AUC) of 0.701 (95% CI, 0.640-0.762). The AUC for the mMRC score without the CAT score was 0.667 (95% CI, 0.616- 0.737). The difference between the AUCs was not statistically significant (P=.088). Conclusions: The CAT score may be useful for monitoring recovery from a COPD exacerbation. Combining the CAT score and a COPD severity score may be useful for predicting clinical course after an exacerbation

Chronic obstructive pulmonary disease assessment test: usefulness for monitoring recovery and predicting poor course of disease after exacerbations. / Utilidad del COPD Asessment Test (CAT) para valorar la recuperación y la mala evolución en la exacerbación de la enfermedad pulmonar obstructiva crónica.

OBJECTIVES: To assess the usefulness of the chronic obstructive pulmonary disease (COPD) assessment test (CAT) for evaluating recovery from an acute exacerbation of chronic COPD. To assess whether the CAT score used along with a COPD exacerbation severity scale can better predict risk of a poor course of disease. METHODS: Prospective multicenter cohort study enrolling patients who attended hospital emergency departments with symptoms of exacerbated COPD. We recorded sociodemographic and clinical data and information from 2 questionnaires: the CAT and the modified dyspnea scale of the Medical Research Council (mMRC). Measures of clinical outcome in this study were the CAT score 2 months after the COPD exacerbation and poor course of disease during the hospital stay or 1 week after discharge from the emergency department if patients were not hospitalized. RESULTS: The cohort included 501 patients. The median (interquartile range) CAT score was 13 (7-18) on the day before the exacerbation, 25 (19-30) during emergency care for the exacerbation, and 13 (7-18) 2 months later. The difference between the CAT scores before the exacerbation and 2 months later was not statistically significant when the cohort was stratified by severity of baseline COPD (mild, moderate, and severe/very severe) (P=.585, P=.419, and P=.4357). The short-term course of disease was poor for 91 patients (18.16%). Combining the mMRC and the CAT scores to predict poor short-term outcome gave an area under the receiver operating characteristic curve (AUC) of 0.701 (95% CI, 0.640-0.762). The AUC for the mMRC score without the CAT score was 0.667 (95% CI, 0.616- 0.737). The difference between the AUCs was not statistically significant (P=.088). CONCLUSION: The CAT score may be useful for monitoring recovery from a COPD exacerbation. Combining the CAT score and a COPD severity score may be useful for predicting clinical course after an exacerbation.

OBJETIVO: Evaluar la utilidad del cuestionario COPD Asessment Test (CAT) para valorar la recuperación de la exacerbación de la enfermedad pulmonar obstructiva crónica (EA-EPOC). Evaluar si la puntuación CAT aumenta la capacidad predictiva de mala evolución de una escala de gravedad para EA-EPOC. METODO: Estudio de cohortes prospectivo multicéntrico. Se reclutaron pacientes que consultaron en los servicios de urgencias hospitalarios (SUH) participantes con síntomas compatibles con EA-EPOC. Se recogieron variables sociodemográficas, datos clínicos, cuestionario CAT y escala de disnea modificada del Medical Research Council (mMRC). Las variables resultado fueron: puntuación CAT dos meses tras EA-EPOC y mala evolución durante el ingreso o una semana después en pacientes dados de alta directamente desde los SUH. RESULTADOS: Se incluyeron 501 pacientes. La mediana (RIC) de la puntuación CAT fue de 13 (RIC 7-18) en el día previo a EA-EPOC, 25 (19-30) en el momento de la consulta por EA-EPOC, y 13 (7-18) a dos meses. La diferencia entre la puntuación CAT el día previo a EA-EPOC y 2 meses del cuestionario no fue estadísticamente significativa según la gravedad de la EPOC basal, leve, moderada y grave-muy grave (p = 0,585, p = 0,419 y p = 0,436). Presentaron una mala evolución a corto plazo 91 pacientes (18,2%). La escala de gravedad con el cuestionario CAT obtuvo un área bajo la curva de la característica operativa del receptor de 0,701 (IC 95% 0,640-0,762) y sin el cuestionario CAT de 0,667 (IC 95% 0,616-0,737), esta diferencia no fue estadísticamente significativa (p = 0,088). CONCLUSIONES: La escala CAT puede ser una herramienta de utilidad a la hora de supervisar la recuperación de la EAEPOC. Su inclusión como variable predictora en una escala de gravedad podría ser de utilidad clínica.

Resistencia a colistín mediado por el gen mcr-1 identificado en cepas de Escherichia coli y Klebsiella pneumoniae: primeros reportes en el Perú / Resistance to colistin mediated by the mcr-1 gene identified in strains of Escherichia coli and Klebsiella pneumoniae: first reports in Peru

Introducción. Ante la aparición de reportes de la presencia del gen mcr-1 y su posible diseminación por plásmidos en los países de la región y dado que este gen confiere resistencia a colistín, fármaco que es la última línea de tratamiento contra bacterias multirresistentes, es importante conocer su presencia en nuestro país en microorganismos que lo expresen. Métodos. Se realizó un estudio descriptivo y transversal. Se incluyeron microorganismos aislados de urocultivos de pacientes ambulatorios de un centro de salud privado en Lima, Perú, en agosto del año 2017. De 326 urocultivos positivos se seleccionaron 10 aislamientos entre cepas de Escherichia coli y Klebsiella pneumoniae que presentaron concentración mínima inhibitoria ≥ 4µg/ mL (interpretado como resistente para colistín) por el sistema automatizado Microscan Walkaway 96 plus. Se utilizaron los siguientes métodos: colistín agar spot, predifusión con tabletas de colistín, microdilución en caldo colistin y PCR para el gen mcr-1. Resultados. Se determinó que 7 aislamientos, todas Escherichia coli, expresaron la presencia del gen mcr-1 por PCR, el cual confiere resistencia plasmídica a polipéptidos. De las cepas restantes, dos Escherichia coli y una Klebsiella pneumoniae, resultaron positivos para resistencia a colistín en las pruebas fenotípicas pero no en la PCR para gen mcr-1 lo cual sugiere un mecanismo de resistencia a colistín no asociado a gen mcr-1. Conclusiones. Se obtuvieron 7 aislamientos de Escherichia coli resistentes a colistín y con expresión del gen mcr-1.

Introduction. Given the appearance of reports of the presence of the mcr-1 gene and its possible dissemination by plasmids in the countries of the region and given that this gene confers resistance to colistin, the drug that is the last line of treatment against multiresistant bacteria, it is important to know its presence in our country in microorganisms that express it. Methods. Descriptive and cross-sectional study was carried out. Microorganisms isolated from urine culture of outpatients from a private health center in Lima, Peru, were included in august 2017. Out of 326 positive urine cultures, 10 isolates were selected between strains of Escherichia coli and Klebsiella pneumoniae that had a minimum inhibitory concentration ≥4µg/mL (interpreted as resistant for colistín) by the automated system Microscan Walkaway 96 plus. The following methods were used: colistin agar spot, prediffusion with colistin tablets, microdilution in colistin broth and PCR for the mcr-1 gene. Results. It was determined that 7 isolates, all Escherichia coli, expressed the presence of the mcr-1 gene by PCR, which confers plasmid resistance to polypeptides. Of the remaining strains, two Escherichia coli and one Klebsiella pneumoniae, were positive for resistance to colistin in the phenotypic tests but not in the PCR for mcr-1 gene, which suggests a mechanism of colistin resistance not associated with the mcr-1 gene. Conclusions. Seven isolates of Escherichia coli resistant to colistin and with expression of the mcr-1 gene were obtained.

Hematemesis With Gastric Laceration After Tattooing a Polyp With Purified Carbon: A Review of the Literature.

Endoscopic tattooing is a simple and effective technique for marking small lesions, so they can be localized during surgery or in later endoscopies. Various agents can be used such as India ink or a solution of purified carbon particles. The number of complications from tattooing is relatively small, but not rare. The majority of the literature on the subject refers to complications in the colon. We present a case of gastric bleeding secondary to a laceration following tattooing with purified carbon, and a literature review.