Early management of adult traumatic spinal cord injury in patients with polytrauma: a consensus and clinical recommendations jointly developed by the World Society of Emergency Surgery (WSES) & the European Association of Neurosurgical Societies (EANS).

BACKGROUND: The early management of polytrauma patients with traumatic spinal cord injury (tSCI) is a major challenge. Sparse data is available to provide optimal care in this scenario and worldwide variability in clinical practice has been documented in recent studies. METHODS: A multidisciplinary consensus panel of physicians selected for their established clinical and scientific expertise in the acute management of tSCI polytrauma patients with different specializations was established. The World Society of Emergency Surgery (WSES) and the European Association of Neurosurgical Societies (EANS) endorsed the consensus, and a modified Delphi approach was adopted. RESULTS: A total of 17 statements were proposed and discussed. A consensus was reached generating 17 recommendations (16 strong and 1 weak). CONCLUSIONS: This consensus provides practical recommendations to support a clinician's decision making in the management of tSCI polytrauma patients.

Caracterización del ataque cerebrovascular isquémico agudo en el servicio de urgencias / Characterization of acute ischemic cerebrovascular accidents at the emergency department

Introducción: la enfermedad cerebrovascular (ECV) sigue siendo en el mundo la segunda causa de muerte. Colombia no cuenta con datos suficientes que permitan establecer diferencias en cuanto a los factores de riesgo y su curso clínico entre hombres y mujeres. Objetivo: caracterizar a los adultos hospitalizados con diagnóstico de enfermedad cerebrovascular isquémica (ECVI) atendidos en el Hospital de San José de Bogotá de marzo 1 de 2019 a enero 31 2020. Metodología: estudio tipo cohorte, descriptivo prospectivo, en mayores de 18 años con diagnóstico de ECVI. Resultados: se incluyeron 106 pacientes con edad media de 69 años, los factores de riesgo fueron inactividad física 87.1%, sobrepeso 40.6%, hipertensión 41.5% y exposición al cigarrillo 22.7%. Se evidenció en el angiotac algún grado de estenosis carotídea en 18% y fibrilación auricular en 5.6%. La mayoría recibió asa y atorvastatina (83.6%), 8.1% fueron anticoagulados y la mayoría presentó un ACV leve (62.6%), 19% de los pacientes fueron trombolizados y se logró establecer la ateroesclerosis como causa del ACV en 41.8%. Discusión y conclusiones: la ECV se presenta con más frecuencia a partir de la séptima década en la población activa, generando importantes discapacidades que limitan la funcionalidad. Existen factores de riesgo modificables, que debidamente manejados disminuyen el riesgo de ACV.

Introduction: cerebrovascular disease (CVD) is ranked as the second leading cause of death worldwide. In Colombia, there is scarce data to distinguish the risk factors and clinical course among men and women. Objective: to characterize inpatients with a diagnosis of ischemic cerebrovascular disease (ICVD) treated at Hospital de San José in Bogotá from March 1, 2019, to January 31, 2020. Methodology: a prospective, descriptive, cohort study in inpatients older than 18 years, diagnosed with ICVD, treated at Hospital de San José in Bogotá. Results: 106 patients with mean age 69 years, were included. Risk factors included physical inactivity 87.1%; overweight 40.6%, hypertension 41.5 % and tobacco smoke exposure 22.7%. A CT angiogram scan evidenced some degree of carotid stenosis in 18% and atrial fibrillation was identified in 5.6%. Most patients received acetylsalicylic acid and atorvastatin (83.6%); 8.1% received anticoagulation therapy and most of them presented a mild stroke (62.6%); 19% of patients received thrombolytic therapy. Atherosclerosis was established as the cause in 41.8%. Discussion and conclusions: cerebrovascular events mostly occur in the seventh decade of life and above, in the active population, causing significant disabilities with functional limitation. The proper management of risk factors that are modifiable can reduce the risk of a stroke.

Chest Compression Fraction Alone Does Not Adequately Measure Cardiopulmonary Resuscitation Quality in Out-of-Hospital Cardiac Arrest.

BACKGROUND: High-quality cardiopulmonary resuscitation in out-of-hospital cardiac arrest is important for increased survival and improved neurological outcome. Chest compression fraction measures the proportion of time chest compressions are given during a cardiac arrest resuscitation. Chest compression fraction has not been compared with the quality of chest compressions delivered at the recommended rate and depth of 100-120/min and 2.0-2.4 inches, respectively. OBJECTIVES: We evaluate whether chest compression fraction correlates with compressions at a target rate of 100-120/min and depth of 2.0-2.4 inches in chest diameter. METHODS: A prospective, observational study design was used to compare chest compression fraction to compressions in target in out-of-hospital cardiac arrest patients in a prehospital urban setting. We include all adult, non-traumatic out-of-hospital cardiac arrest patients with a resuscitation attempt during January 1, 2019 through September 30, 2019, for a total of 9 months. Spearman's rank correlation was used to determine correlation between compression fraction and compressions in target. RESULTS: A total of 120 out-of-hospital cardiac arrest cases were included in the study. We found a high chest compression fraction median of 83% (interquartile range 72-90%), but a low compression in target median of 13% (interquartile range 5-29%). There was no significant correlation between chest compression fraction and compressions in target when analyzed linearly (Spearman's Rho = 0.165, p = 0.072). No difference was found when dichotomizing chest compression fraction into high and low variables in comparison with compressions in target (14% vs. 10%, p = 0.119). CONCLUSION: Chest compression fraction is not associated with compressions in target for rate and depth for out-of-hospital cardiac arrest cardiopulmonary resuscitation.

Utility of Glucose Testing and Treatment of Hypoglycemia in Patients with Out-of-Hospital Cardiac Arrest.

Objective: Many emergency medical services (EMS) protocols for out-of-hospital cardiac arrests (OHCA) include point-of-care (POC) glucose measurement and administration of dextrose, despite limited knowledge of benefit. The objective of this study was to describe the incidence of hypoglycemia and dextrose administration by EMS in OHCA and subsequent patient outcomes.Methods: This was a retrospective analysis of OHCA in a large, regional EMS system from 2011 to 2017. Patients ≥18 years old with non-traumatic OHCA and attempted field resuscitation by paramedics were included. The primary outcomes were frequency of POC glucose measurement, hypoglycemia (glucose <60 mg/dl), and dextrose/glucagon administration (treatment group). The secondary outcomes included field return of spontaneous circulation (ROSC), survival to hospital discharge (SHD), and survival with good neurologic outcome.Results: There were 46,211 OHCAs during the study period of which 33,851 (73%) had a POC glucose test performed. Glucose levels were documented in 32,780 (97%), of whom 2,335 (7%) were hypoglycemic. Among hypoglycemic patients, 41% (959) received dextrose and/or glucagon. Field ROSC was achieved in 30% (286) of hypoglycemic patients who received treatment. Final outcome was determined for 1,714 (73%) of the hypoglycemic cases, of whom 120 (7%) had SHD and 66 (55%) had a good neurologic outcome. Of the 32,780 patients with a documented POC glucose result who were identified as hypoglycemic, only 27 (0.08%) received field treatment, and survived to discharge with good neurologic outcome. 48 (6%) of patients in the treatment group had SHD vs. 72 (8%) without treatment, risk difference -2.0% (95%CI -4.4%, 0.4%), p = 0.1.Conclusion: In this EMS system, POC glucose testing was common in adult OHCA, yet survival to hospital discharge with good neurologic outcome did not differ between patients treated and untreated for hypoglycemia. These results question the common practice of measuring and treating hypoglycemia in OHCA patients.

Safety and efficacy of the mRNA BNT162b2 vaccine against SARS-CoV-2 in five groups of immunocompromised patients and healthy controls in a prospective open-label clinical trial.

BACKGROUND: Patients with immunocompromised disorders have mainly been excluded from clinical trials of vaccination against COVID-19. Thus, the aim of this prospective clinical trial was to investigate safety and efficacy of BNT162b2 mRNA vaccination in five selected groups of immunocompromised patients and healthy controls. METHODS: 539 study subjects (449 patients and 90 controls) were included. The patients had either primary (n=90), or secondary immunodeficiency disorders due to human immunodeficiency virus infection (n=90), allogeneic hematopoietic stem cell transplantation/CAR T cell therapy (n=90), solid organ transplantation (SOT) (n=89), or chronic lymphocytic leukemia (CLL) (n=90). The primary endpoint was seroconversion rate two weeks after the second dose. The secondary endpoints were safety and documented SARS-CoV-2 infection. FINDINGS: Adverse events were generally mild, but one case of fatal suspected unexpected serious adverse reaction occurred. 72.2% of the immunocompromised patients seroconverted compared to 100% of the controls (p=0.004). Lowest seroconversion rates were found in the SOT (43.4%) and CLL (63.3%) patient groups with observed negative impact of treatment with mycophenolate mofetil and ibrutinib, respectively. INTERPRETATION: The results showed that the mRNA BNT162b2 vaccine was safe in immunocompromised patients. Rate of seroconversion was substantially lower than in healthy controls, with a wide range of rates and antibody titres among predefined patient groups and subgroups. This clinical trial highlights the need for additional vaccine doses in certain immunocompromised patient groups to improve immunity. FUNDING: Knut and Alice Wallenberg Foundation, the Swedish Research Council, Nordstjernan AB, Region Stockholm, Karolinska Institutet, and organizations for PID/CLL-patients in Sweden.

Edulcorantes artificiales y su papel en la enfermedad renal crónica: una revisión

Los edulcorantes no calóricos surgieron como una opción segura y saludable en el marco de la alimentación y, por lo tanto, han sido de gran interés en la cultura dietética adquirida en la actualidad; es importante mencionar que en esta cultura adquirida el consumo de comida rápida y con altos niveles de azúcar ha tomado especial fuerza, lo que repercute negativamente en la incidencia de enfermedades metabólicas. En este orden de ideas, los edulcorantes no calóricos se convierten en una mejor opción para la salud en la que no es necesario hacer un cambio drástico en el estilo de vida. No obstante, los beneficios de los edulcorantes artificiales no calóricos no han sido estudiados a profundidad y no se ha evidenciado que una dieta a base de estos sustitutivos provoque un cambio significativo en el desarrollo de enfermedades metabólicas asociadas al consumo de azúcar, por el contrario, se han relacionado con enfermedades como obesidad, diabetes mellitus tipo 2 y síndrome metabólico. Asimismo, estos pueden provocar una serie de cambios metabólicos a través de distintos mecanismos que terminan en proteinuria progresiva y descenso de la tasa de filtrado glomerular. A partir de lo anterior, se hace necesario un análisis del riesgo que se corre al elegir esta opción alimenticia, para así no dejarse llevar por los procesos mediáticos que los promocionan, sino más bien, regirse por los hallazgos científicos.

Non-caloric artificial sweeteners have emerged to offer a safe and healthy option in the framework of food. They have received special attention in recent decades, precisely because of the current food culture, where fast food and high sugar consumption have taken on special strength, which has a negative impact on the incidence of metabolic diseases. In that order of ideas, non-caloric artificial sweeteners propose better health without the need for a drastic change in lifestyle. However, its benefits have not been studied in depth, in addition to the fact that there has been no significant change in the development of metabolic diseases associated with sugar consumption, on the contrary, they have been related to diseases such as obesity, type 2 diabetes mellitus and metabolic syndrome. Likewise, they cause a series of metabolic changes by different mechanisms that end in progressive proteinuria and a decrease in the glomerular filtration rate. In order with the above, an analysis of the risk to which one is subjected when choosing this food option is necessary, and not be deafened, much less dazzled by the media processes, if not rather, be governed by scientific findings.

Activation of IRE1, PERK and salt-inducible kinases leads to Sec body formation in Drosophila S2 cells.

The phase separation of the non-membrane bound Sec bodies occurs in Drosophila S2 cells by coalescence of components of the endoplasmic reticulum (ER) exit sites under the stress of amino acid starvation. Here, we address which signaling pathways cause Sec body formation and find that two pathways are critical. The first is the activation of the salt-inducible kinases (SIKs; SIK2 and SIK3) by Na+ stress, which, when it is strong, is sufficient. The second is activation of IRE1 and PERK (also known as PEK in flies) downstream of ER stress induced by the absence of amino acids, which needs to be combined with moderate salt stress to induce Sec body formation. SIK, and IRE1 and PERK activation appear to potentiate each other through the stimulation of the unfolded protein response, a key parameter in Sec body formation. This work shows the role of SIKs in phase transition and re-enforces the role of IRE1 and PERK as a metabolic sensor for the level of circulating amino acids and salt. This article has an associated First Person interview with the first author of the paper.

El diagnóstico de Infecciones de Transmisión Sexual por la técnica de biología molecular es la mejor estrategia para su diagnóstico oportuno y específico. Un caso clínico / The diagnosis of Sexually Transmitted Infections by the molecular biology technique is the best strategy for its timely and specific diagnosis. A clinical case

Resumen Se presenta el caso de un paciente a quien se le diagnosticó una Infección de Transmisión Sexual (ITS) por la técnica de PCR múltiple y en quién se logró por esta técnica, detectar cuatro agentes diferentes simultáneamente: Neisseria gonorreae, Mycoplasma hominis, Ureaplasma urealyticum/parvum y Trichomonas vaginalis, situación esta, que no hubiera sido posible utilizando el procedimiento estándar.

Summary Here we report the case of a patient with a Sexually Transmitted Disease (STI) in whom four different agents were detected by a multiple PCR technique: Neisseria gonorreae, Mycoplasma hominis, Ureaplasma urealyticum / parvum and Trichomonas vaginalis. This detection of multiple agents would not have been possible using conventional procedures.

Subdiagnóstico de la lesión renal aguda en pacientes obstétricas complicadas en la Unidad de Cuidados Intensivos / Underdiagnosis of acute kidney injury in complicated obstetric patients in the Intensive Care Unit / Subdiagnóstico da lesão renal aguda em pacientes obstétricas complicadas na Unidade de Terapia Intensiva

Resumen: Objetivo: Definir la prevalencia y factores asociados de lesión renal aguda en el embarazo en la Unidad de Cuidados Intensivos del Hospital de la Mujer, Morelia, Michoacán, México. Material y métodos: Estudio retrospectivo, transversal y descriptivo de enero de 2013 a agosto de 2018. Pacientes: 213 expedientes de pacientes obstétricas complicadas. Criterios de inclusión: pacientes obstétricas complicadas que ingresaron a la UCI, pacientes que cumplieron criterios para lesión renal aguda. Criterios de exclusión: pacientes con lesión renal crónica, expediente clínico no disponible. Sólo 154 cumplieron con los criterios de selección. Resultados: Se incluyeron 154 pacientes obstétricas complicadas; un promedio de 25.6p ± 1.6 por año. Treinta y seis por ciento tuvo diagnóstico de eclampsia; 35.3% preeclampsia; 29.3% síndrome de HELLP; 19.3% hemorragia obstétrica, 10% sepsis. Se demostró asociación de PR-AKI con síndrome de HELLP (p = 0.0003) y preeclampsia (p = 0.01). Se encontró un subdiagnóstico de 36.7% al buscar PR-AKI utilizando los criterios RIFLE y AKI (p = 0.000007). De las pacientes con PR-AKI grado 3, sólo 20% requirió terapia de reemplazo renal continua. Conclusiones: La lesión renal asociada al embarazo complicado tiene una prevalencia de 6.7%. Las complicaciones asociadas a PR-AKI son síndrome de HELLP y preeclampsia. La PR-AKI está subdiagnosticada hasta en 36.7%.

Abstract: Objective: To define the prevalence and associated factors of acute renal injury in pregnancy (PR-AKI) in the Intensive Care Unit (ICU) of the Women's Hospital, Morelia, Michoacán, Mexico. Material and methods: Retrospective, cross-sectional and descriptive study from January 2013-August 2018. Ambit: Intensive Care Unit of the Women's Hospital. Patients: We reviewed 213 files of complicated obstetric patients. Inclusion criteria: complicated obstetric patients that merit admission to the ICU, patients who met criteria for LRA. Exclusion criteria: patients with chronic. Main variables of interest: Complicated obstetric patients (preeclampsia, eclampsia, HELLP syndrome, hemorrhagic shock and sepsis). It was investigated if they developed PR-AKI. Results: 154 complicated obstetric patients were included; an average of 25.6p ± 1.6 per year. 36% had a diagnosis of eclampsia; 35.3% pre-eclampsia; 29.3% HELLP syndrome; 19.3% obstetric hemorrhage, 10% sepsis. Association of PR-AKI with HELLP syndrome (p = 0.0003) and pre-eclampsia (p = 0.01) was demonstrated. A subdiagnosis of 36.7% was found when searching for PR-AKI using the RIFLE and AKI criteria (p = 0.000007). Of the patients with PR-AKI grade 3, 20% required continuous renal replacement therapy. Conclusions: Renal injury associated with complicated pregnancy has a prevalence of 6.7%. The complications that most develop PR-AKI are HELLP syndrome and preeclampsia. PR-AKI is underdiagnosed.

Resumo: Objetivo: Definir a prevalência e os fatores associados à Lesão Renal Aguda na gravidez na Unidade de Terapia Intensiva do Hospital de la Mujer, Morelia, Michoacán, México. Material e métodos: Estudo retrospectivo, transversal e descritivo de janeiro de 2013 a agosto de 2018. Pacientes: 213 prontuários obstétricos complicados. Critérios de inclusão: pacientes obstétricas complicadas admitidas na UTI, pacientes que preencheram os critérios para Lesão Renal Aguda. Critérios de exclusão: pacientes com Lesão Renal Crônica, ficha clínica não disponível. Apenas 154 atenderam aos critérios de seleção. Resultados: 154 pacientes obstétricas complicadas foram incluídas; uma média de 25.6p ± 1.6 por ano. 36% tiveram diagnóstico de eclâmpsia; 35.3% pré-eclâmpsia; 29.3% síndrome HELLP; 19.3% hemorragia obstétrica, 10% sepse. Foi demonstrada uma associação de PR-AKI com síndrome HELLP (p = 0.0003) e pré-eclâmpsia (p = 0.01). Foi encontrado subdiagnóstico de 36.7% na busca de PR-AKI pelos critérios RIFLE e AKI (p = 0.000007). Dos pacientes com PR-AKI grau 3, 20% necessitaram de terapia de reposição renal contínua. Conclusões: Lesões renais associadas à gravidez complicada apresentam prevalência de 6.7%. As complicações associadas à PR-AKI são a síndrome HELLP e a pré-eclâmpsia. PR-AKI é subdiagnosticado em até 36.7%.

Implementation of strategies to optimize the co-composting of green waste and food waste in developing countries. A case study: Colombia.

Green waste (GW) management is a key issue due to its high production rate and its variety of physical properties and chemical composition. Composting is a promising alternative for GW treatment and valorization. However, the presence of recalcitrant components such as lignin and cellulose increase the processing time. Strategies such as addition of co-substrates and operative modifications have improved the processing time and compost quality. Therefore, in this study, three strategies have been implemented (i) addition of unprocessed food (UF) and processed foods (PF) as co-substrates for GW to improve the nutrients composition of the substrates at the beginning of the process, (ii) addition of phosphate rock (PR) to improve product quality, and (iii) the use of two-stage composting (TSC) to accelerate the degradation. For this purpose, three treatments with the same mixture (48% GW + 21% UF + 18% PF + 13% sawdust (SW)) were conducted: (i) TA (TSC + 15% PR), (ii) TB (traditional composting +15% PR), and (iii) TC (traditional composting). TSC did not show significant differences compared with TC regarding the process and compost quality, while the addition of PR increased the phosphorus content of the product. However, TC produced the compost with the highest quality according to the Colombian legislation for soil amendment.

Case Report and Review of 7 Similar Cases in the Literature: Cutaneous Sarcoidosis as Side Effect of Pembrolizumab Plus Chemotherapy in Stage IV Squamous Cell Carcinoma of Lung.

Advanced squamous cell lung cancer used to have universally dismal long-term outcomes before the use of immune checkpoint inhibitors (ICIs). Due to the expanding role of ICIs, there has been an increasing number of long-term survivors in this relatively large group of patients. ICIs such as anti-cytotoxic T-lymphocyte-associated protein 4 and anti-programmed cell death protein 1/programmed death-ligand 1 monoclonal antibodies increase the T-cell activation and limit the tumor capacity to escape the adaptive immune response. However, efficacy comes along with unique immune-related adverse events. We present an unusual case of cutaneous sarcoidosis in a 63-year-old white female who was diagnosed with stage IV squamous cell lung cancer developed skin manifestations 3 months after started chemo/pembrolizumab. Sarcoidosis was confirmed by skin punch biopsy and resolved after a short course of systemic glucocorticoid while maintained on pembrolizumab with lower frequency. These sarcoid-like lesions associated with the blockage of programmed death receptor-1 have been increasingly described in many different malignancies especially in melanoma. There is a need for further investigation to the characterization of the population prone to this immune-related adverse events.

Severe sepsis and septic shock in patients transported by prehospital services versus walk in patients to the emergency department.

BACKGROUND: Sepsis is a leading cause of death in the hospital for which aggressive treatment is recommended to improve patient outcomes. It is possible that sepsis patients brought in by emergency medical services (EMS) have a unique advantage in the emergency department (ED) which could improve sepsis bundle compliance. OBJECTIVE: To evaluate patient care processes and outcome differences between severe sepsis and septic shock patients in the emergency department who were brought in by EMS compared to non-EMS patients. METHODS: We performed a retrospective chart review of all severe sepsis and septic shock patients who declared in the ED during January 2012 thru December 2014. We compared differences in patient characteristics, patient care processes, sepsis bundle compliance metrics, and outcomes between both groups. RESULTS: Of the 1066 patients included in the study, 387 (36.6%) were brought in by EMS and 679 (63.7%) patients arrived via non-EMS transport. In the multivariate regression model, time of triage to sepsis declaration (coeff = -0.406; 95% CI = -0.809, -0.003; p = 0.048) and time of triage to physician (coeff = -0.543; 95% CI = -0.864, -0.221; p = 0.001) was significantly shorter for EMS patients. We found no statistical difference in adjusted individual sepsis compliance metrics, overall bundle compliance, or mortality between both groups. CONCLUSION: EMS transported patients have quicker sepsis declaration times and are seen sooner by ED providers. However, we found no statistical difference in bundle compliance or patient outcomes between walk in patients and EMS transported patients.

Paramedic Identification of Pediatric Seizures: A Prospective Cohort Study.

OBJECTIVE: Pediatric seizures commonly trigger emergency medical services (EMS) activation and account for approximately 5-15% of all pediatric 911-EMS calls. More than 50% of children with active seizure activity do not receive prehospital antiepileptic drugs, potentially because they are not recognized by EMS. The purpose of this study is to evaluate specificity and sensitivity of paramedic identification of pediatric seizures and to describe the characteristics of unrecognized seizures. METHODS: This is an 18-month prospective cohort study at a single, pediatric emergency department (ED). EMS patients ≤15 years old with a prehospital provider impression of seizure were included. Upon ED arrival, a data collection form, which included the EMS verbal report and patient's clinical status, was completed by the attending emergency physician. The primary outcome was sensitivity and specificity of paramedic identification of active seizure. Secondary outcomes included characteristics of missed seizures, ED interventions, and disposition. Descriptive statistics, sensitivity, and specificity were computed. Patient characteristics and clinical outcomes were compared. RESULTS: Surveys were completed for 349 patients (Median 3, IQR = 3.4). Fifty-two of the patients (15%) were actively seizing upon arrival at the ED. Sensitivity was 54% and specificity was 96% for paramedic identification of active seizure. Common features of missed cases were abnormal vital signs (75%), gaze deviation (50%) and clenched jaw (33%). Of these, 37% required intubation and 53% were admitted to the intensive care unit. CONCLUSION: Paramedics were highly specific, but not sensitive in identifying active seizures on ED arrival. Patients with unrecognized seizures presented most commonly with abnormal vital signs and gaze deviation.

Asociación entre relaciones peso-estatura y grasa subcutánea en jóvenes universitarios peruanos / Association between weight-height ratios and subcutaneous fat in young Peruvian university students

Introducción: La distribución de la grasa corporal ha sido asociada significativamente como elemento de predicción del factor de riesgo de enfermedades cardiovasculares. El objetivo del estudio fueron verificar la aplicabilidad de los índices antropométricos estaturo-ponderales (Índice de masa corporal IMC e índice de masa triponderal IMT) para valorar la adiposidad corporal en jóvenes estudiantes universitarios peruanos. Material y métodos: Se efectuó un estudio descriptivo (correlacional) en jóvenes universitarios. Se investigaron 210 sujetos de ambos sexos (59 varones y 151 mujeres) con un rango de edad de 18 a 25 años de una universal nacional de Arequipa. Se evaluó e peso, la estatura y cuatro pliegues cutáneos (bicipital, tricipital, subescapular y supra iliaco). Se calculó el índice de masa corporal IMC e índice triponderal (IMT). Resultados: Las relaciones entre índices antropométricos con la sumatoria de 4 pliegues cutáneos fueron significativas en ambos sexos. En varones, la relación entre sumatoria de pliegues con IMC fue de R2= 75% y con el IMT fue de R2= 73%. En mujeres, la relación de sumatoria de pliegues con el IMC fue de R2= 63% y con el IMT de R2= 57%. Hubo diferencias significativas entre las tres categorías (alto, medio y bajo), tanto para IMC, como para IMT y en ambos sexos (p<0,05). Conclusión: En ambos sexos, se observó una asociación significativa entre el IMC y el IMT con el sumatorio de pliegues subcutáneos. Estos hallazgos sugieren que tanto el IMC como el IMT resultan útiles para estimar adiposidad corporal en estudiantes universitarios peruanos. (AU)

Introduction: Body fat distribution has been significantly associated as a predictor of cardiovascular disease risk factor. The aim of the study was to verify the applicability of the anthropometric staturo-weight indices (Body Mass Index BMI and Triponderal Mass Index TMI) to assess body adiposity in young Peruvian university students. Material and methods: A descriptive (correlational) study was carried out in young university students. We investigated 210 subjects of both sexes (59 males and 151 females) with an age range of 18 to 25 years from a national university in Arequipa. Weight, height and four skinfolds (bicipital, tricipital, subscapular and supra iliac) were evaluated. Body mass index (BMI) and triponderal index (TMI) were calculated. Results: The relationships between anthropometric indices and the sum of 4 skinfolds were significant in both sexes. In men, the relationship between the sum of skinfolds with BMI was R2= 75% and with the TMI was R2= 73%. In females, the relationship between the sum of folds with BMI was R2= 63% and with TMI was R2= 57%. There were significant differences between the three categories (high, medium and low), both for BMI and TMI and in both sexes (p<0.05). Conclusion: In both sexes, there was a significant association between BMI and IMT with the sum of subcutaneous folds. These findings suggest that both BMI and TMI are useful to estimate body adiposity in Peruvian university students. (AU)

Increased Expression of Interleukin-1 Receptor Characterizes Anti-estrogen-Resistant ALDH+ Breast Cancer Stem Cells.

Estrogen-receptor-positive breast tumors are treated with anti-estrogen (AE) therapies but frequently develop resistance. Cancer stem cells (CSCs) with high aldehyde dehydrogenase activity (ALDH+ cells) are enriched following AE treatment. Here, we show that the interleukin-1ß (IL-1ß) signaling pathway is activated in ALDH+ cells, and data from single cells reveals that AE treatment selects for IL-1 receptor (IL1R1)-expressing ALDH+ cells. Importantly, CSC activity is reduced by an IL1R1 inhibitor in AE-resistant models. Moreover, IL1R1 expression is increased in the tumors of patients treated with AE therapy and predicts treatment failure. Single-cell gene expression analysis revealed that at least two subpopulations exist within the ALDH+ population, one proliferative and one quiescent. Following AE therapy the quiescent population is expanded, which suggests CSC dormancy as an adaptive strategy that facilitates treatment resistance. Targeting of ALDH+IL1R1+ cells merits testing as a strategy to combat AE resistance in patients with residual disease.

Targeting STAT3 signaling using stabilised sulforaphane (SFX-01) inhibits endocrine resistant stem-like cells in ER-positive breast cancer.

Estrogen receptor (ER) positive breast cancer is frequently sensitive to endocrine therapy. Multiple mechanisms of endocrine therapy resistance have been identified, including cancer stem-like cell (CSC) activity. Here we investigate SFX-01, a stabilised formulation of sulforaphane (SFN), for its effects on breast CSC activity in ER+ preclinical models. SFX-01 reduced mammosphere formation efficiency (MFE) of ER+ primary and metastatic patient samples. Both tamoxifen and fulvestrant increased MFE and aldehyde dehydrogenase (ALDH) activity of patient-derived xenograft (PDX) tumors, which was reversed by combination with SFX-01. SFX-01 significantly reduced tumor-initiating cell frequency in secondary transplants and reduced the formation of spontaneous lung micrometastases by PDX tumors in mice. Mechanistically, we establish that both tamoxifen and fulvestrant induce STAT3 phosphorylation. SFX-01 suppressed phospho-STAT3 and SFN directly bound STAT3 in patient and PDX samples. Analysis of ALDH+ cells from endocrine-resistant patient samples revealed activation of STAT3 target genes MUC1 and OSMR, which were inhibited by SFX-01 in patient samples. Increased expression of these genes after 3 months' endocrine treatment of ER+ patients (n = 68) predicted poor prognosis. Our data establish the importance of STAT3 signaling in CSC-mediated resistance to endocrine therapy and the potential of SFX-01 for improving clinical outcomes in ER+ breast cancer.

Microenvironmental IL1ß promotes breast cancer metastatic colonisation in the bone via activation of Wnt signalling.

Dissemination of tumour cells to the bone marrow is an early event in breast cancer, however cells may lie dormant for many years before bone metastases develop. Treatment for bone metastases is not curative, therefore new adjuvant therapies which prevent the colonisation of disseminated cells into metastatic lesions are required. There is evidence that cancer stem cells (CSCs) within breast tumours are capable of metastasis, but the mechanism by which these colonise bone is unknown. Here, we establish that bone marrow-derived IL1ß stimulates breast cancer cell colonisation in the bone by inducing intracellular NFkB and CREB signalling in breast cancer cells, leading to autocrine Wnt signalling and CSC colony formation. Importantly, we show that inhibition of this pathway prevents both CSC colony formation in the bone environment, and bone metastasis. These findings establish that targeting IL1ß-NFKB/CREB-Wnt signalling should be considered for adjuvant therapy to prevent breast cancer bone metastasis.

Active Seizures in Children Are Often Subtle and Unrecognized by Prehospital Providers.

Early recognition and treatment of seizures is essential for optimal patient outcomes. Seizure activity, particularly in young children, can be subtle and often go unrecognized by providers. This case series retrospectively identified 7 cases of pediatric patients (14 years and younger) who presented to the emergency department with active seizure activity that was unrecognized by the prehospital care providers. The presentation of these patients, their clinical signs of seizure, and emergency department disposition are highlighted in this series.