Evaluation of the Biological Activities of Peptides from Epidermal Mucus of Marine Fish Species from Chilean Aquaculture.

The skin of fish is a physicochemical barrier that is characterized by being formed by cells that secrete molecules responsible for the first defense against pathogenic organisms. In this study, the biological activity of peptides from mucus of Seriola lalandi and Seriolella violacea were identified and characterized. To this purpose, peptide extraction was carried out from epidermal mucus samples of juveniles of both species, using chromatographic strategies for purification. Then, the peptide extracts were characterized to obtain the amino acid sequence by mass spectrometry. Using bioinformatics tools for predicting antimicrobial and antioxidant activity, 12 peptides were selected that were chemically produced by simultaneous synthesis using the Fmoc-Tbu strategy. The results revealed that the synthetic peptides presented a random coil or extended secondary structure. The analysis of antimicrobial activity allowed it to be discriminated that four peptides, named by their synthesis code 5065, 5069, 5070, and 5076, had the ability to inhibit the growth of Vibrio anguillarum and affected the copepodite stage of C. rogercresseyi. On the other hand, peptides 5066, 5067, 5070, and 5077 had the highest antioxidant capacity. Finally, peptides 5067, 5069, 5070, and 5076 were the most effective for inducing respiratory burst in fish leukocytes. The analysis of association between composition and biological function revealed that the antimicrobial activity depended on the presence of basic and aromatic amino acids, while the presence of cysteine residues increased the antioxidant activity of the peptides. Additionally, it was observed that those peptides that presented the highest antimicrobial capacity were those that also stimulated respiratory burst in leukocytes. This is the first work that demonstrates the presence of functional peptides in the epidermal mucus of Chilean marine fish, which provide different biological properties when the fish face opportunistic pathogens.

The evolutionary conserved miR-137/325 tandem mediates obesity-induced hypogonadism and metabolic comorbidities by repressing hypothalamic kisspeptin.

BACKGROUND: Obesity-induced hypogonadism (OIH) is a prevalent, but often neglected condition in men, which aggravates the metabolic complications of overweight. While hypothalamic suppression of Kiss1-encoded kisspeptin has been suggested to contribute to OIH, the molecular mechanisms for such repression in obesity, and the therapeutic implications thereof, remain unknown. METHODS: A combination of bioinformatic, expression and functional analyses was implemented, assessing the role of the evolutionary-conserved miRNAs, miR-137 and miR-325, in mediating obesity-induced suppression of hypothalamic kisspeptin, as putative mechanism of central hypogonadism and metabolic comorbidities. The implications of such miR-137/325-kisspeptin interplay for therapeutic intervention in obesity were also explored using preclinical OIH models. RESULTS: MiR-137/325 repressed human KISS1 3'-UTR in-vitro and inhibited hypothalamic kisspeptin content in male rats, while miR-137/325 expression was up-regulated, and Kiss1/kisspeptin decreased, in the medio-basal hypothalamus of obese rats. Selective over-expression of miR-137 in Kiss1 neurons reduced Kiss1/ kisspeptin and partially replicated reproductive and metabolic alterations of OIH in lean mice. Conversely, interference of the repressive actions of miR-137/325 selectively on Kiss1 3'-UTR in vivo, using target-site blockers (TSB), enhanced kisspeptin content and reversed central hypogonadism in obese rats, together with improvement of glucose intolerance, insulin resistance and cardiovascular and inflammatory markers, despite persistent exposure to obesogenic diet. Reversal of OIH by TSB miR-137/325 was more effective than chronic kisspeptin or testosterone treatments in obese rats. CONCLUSIONS: Our data disclose that the miR-137/325-Kisspeptin repressive interaction is a major player in the pathogenesis of obesity-induced hypogonadism and a putative druggable target for improved management of this condition and its metabolic comorbidities in men suffering obesity. SIGNIFICANCE STATEMENT: Up to half of the men suffering obesity display also central hypogonadism, an often neglected complication of overweight that can aggravate the clinical course of obesity and its complications. The mechanisms for such obesity-induced hypogonadism remain poorly defined. We show here that the evolutionary conserved miR137/miR325 tandem centrally mediates obesity-induced hypogonadism via repression of the reproductive-stimulatory signal, kisspeptin; this may represent an amenable druggable target for improved management of hypogonadism and other metabolic complications of obesity.

[Association between vascularization and its impact for recurrence of juvenile nasoangiofibroma]. / Asociación entre vascularización y su impacto en la recurrencia de nasoangiofibroma juvenil.

Background: Juvenile nasoangiofibroma (JNA) is a rare, highly vascular, locally aggressive benign tumor which affects male adolescents. It accounts for 0.05-0.5% of head and neck tumors with recurrence rates of 6-50%. The internal maxillary artery is the main source of JNA. Objective: To evaluate the relationship between vascular supply as a factor associated with JNA recurrence. Material and methods: An cohort study was performed in patients diagnosed with NAJ. We collected demographic data, vascular contribution by angiography and tomography results to classify them according to their stage (Radkowski classification), and if they received adjuvant radiotherapy. Post-surgical CT scans were requested to evaluate recurrence and if any of the variables were related to this. Results: A sample of 14 male patients who met the inclusion criteria was collected. The mean age was 14.71 ± 4.08 years. According to Radkowski classification, stage IA, IIA and IIC were reported in 14.3%, IIB and IIB in 7.1% and IIIA in 42.9%. 42.9% had recurrence and out of these, 66.7% had irrigation of the right carotid system and the same percentage of patients received radiotherapy as adjuvant treatment. Conclusions: There is a tendency in tumor recurrence associated with vascular contribution from the right carotid system, as well as with patients who received radiotherapy.

Introducción: el nasoangiofibroma juvenil (NAJ) es un tumor benigno, raro, altamente vascular y localmente agresivo que afecta a adolescentes del sexo masculino. Representa de 0.05 a 0.5% de los tumores de cabeza y cuello con tasas de recurencia del 6-50%. La arteria maxilar interna se considera el principal aporte de los NAJ. Objetivo: evaluar la relación entre el aporte vascular como factor asociado con la recurrencia de NAJ. Material y métodos: se realizó un estudio de cohorte en pacientes con diagnóstico de NAJ. Se recabaron datos demográficos, el aporte vascular por resultados de angiografía y de tomografía para clasificarlos según su estadio (clasificación de Radkowski), y si recibieron radioterapia adyuvante. Se solicitaron tomografías postquirúrgicas para evaluar la recurrencia y si alguna de las variables tiene relación con esta. Resultados: se recolectó una muestra de 14 pacientes del sexo masculino que cumplieron con los criterios de inclusión. La edad promedio fue de 14.71 ± 4.08 años. Según la clasificación de Radkowski, se reportó un estadio IA, IIA y IIC en 14.3%, IIB y IIB en un 7.1% y IIIA en 42.9%. El 42.9% tuvo recurrencia y de estos, el 66.7% tenía irrigación del sistema carotídeo derecho y recibieron radioterapia como tratamiento adyuvante el mismo porcentaje de pacientes. Conclusiones: existe una tendencia en la recurrencia del tumor asociada al aporte vascular proveniente del sistema carotídeo derecho y también a los pacientes que recibieron radioterapia.

"Minimally invasive video-assisted submuscular gluteal augmentation with implants. An innovative technique".

SUMMARY: Gluteal augmentation is one of the most requested cosmetic procedures. This article describes the surgical technique and early results of an innovative minimally invasive video-assisted submuscular gluteal augmentation with implants. The authors aimed to perform a technique that would reduce complications and surgical time. Fourteen healthy non-obese women with no relevant pathologic background who requested gluteal augmentation with implants as a single procedure were included. The procedure was performed through bilateral parasacral 5 cm incisions at cutaneous and subcutaneous planes as far as the gluteus maximus muscle fascia. Through a 1 cm incision in the fascia and muscle, the index finger was introduced under the gluteus maximus and a submuscular space was created by blunt dissection towards the greater trochanter to avoid a sciatic nerve injury, until the middle gluteus level was reached. Next, the balloon shaft of a Herloon trocar (Aesculap® - B. Brawn®) was introduced in the dissected space. Balloon dilatation in this submuscular space was performed as required. The balloon shaft was replaced by the trocar, through which a 30° 10-mm laparoscope was introduced. Submuscular pocket anatomic structures were observed, and while the laparoscope was being retrieved, hemostasis was verified. The submuscular plane collapsed, leaving the pocket for the implant to be placed. There were no intraoperative complications. The only complication was a self-limited seroma in one patient (7.1 percent). This innovative technique has shown ease and safety, allowing direct visualization and hemostasis, with a short surgical time, low complication rate and an excellent degree of satisfaction.

Compliance with a high-protein and energy-dense oral nutritional supplement in patients with disease-related malnutrition: a randomized open-label crossover trial.

Introduction: Patient compliance with oral nutritional supplements (ONS) is not optimal for meeting energy and nutritional requirements in a high proportion of patients with disease-related malnutrition (DRM). Energy density or prescribed volume of ONS may impact compliance. Methods: A randomized, open-label crossover trial was conducted in outpatients with DRM to compare compliance with a high energy-dense ONS (edONS, 2.4 kcal/mL) and a reference ONS (heONS, 2.0 kcal/mL; NCT05609006). Patients were randomly assigned to two 8-week treatment sequences of four-weeks periods: edONS + heONS (sequence A) or heONS + edONS (sequence B). Patients daily reported the amount of product left over gastrointestinal tolerance and satisfaction with ONS. A non-inferiority analysis was performed to compare the compliance rate (percentage of consumed energy over the prescribed) for each period and sequence. Results: Fifty-three patients were assigned to sequence A and 50 to sequence B (55.7 ± 13.9 years, 37.0% female, 67.1% oncology patients). In sequence A, the compliance rates were 88.6% ± 14.3% vs. 84.1 ± 21.8% (p = 0.183), while in sequence B, they were 78.9% ± 23.8% vs. 84.4% ± 21.4% (p < 0.01). In both sequences, the lower range of the confidence interval for compliance with edONS was greater than the non-inferiority threshold (for sequence A ΔCompA was 4.5% [95% CI, -2.0% to 10.0%], and for sequence, B ΔCompB was 5.6% [95% CI, -3.0% to 14.0%]). The total discarded cost for each ONS was higher for heONS than edONS, being the difference statistically significant in sequence B. BMI increased slightly and not significantly in both sequences, and the percentage of patients with severe malnutrition was reduced. The frequency of gastrointestinal symptoms was low for both sequences, and satisfaction with ONS was slightly higher for edONS. Conclusion: Our findings highlight that edONS was non-inferior to heONS in terms of consumed energy over the prescribed, with a lower amount of edONS discarded, which suggests a higher efficiency of edONS.

Effect of flapless piezopuncture on maxillary canine distalization. A preliminary randomized controlled trial

Several methods have been described to shorten orthodontic treatments, but the main disadvantage is their invasiveness. Animal studies have shown that piezopuncture can accelerate the rate of tooth movement without causing collateral damage. Objective: To evaluate the clinical outcome, in terms of safety and efficacy, of a flapless piezopuncture on maxillary canine distalization. Methods: A split-mouth randomized clinical trial was carried out on five patients. Piezopuncture was performed on a random side of the maxillary arch to assess the rate of canine movement on the stimulated side, compared to the non-stimulated control side after 15 (T1), 30 (T2), and 60 (T3) days. Also, immediate side effects and changes in buccal bone thickness after one year were assessed. Results: Distalization on the intervention versus control side at T1 was 1.24±0.21mm versus 0.64±0.33mm (p=0.005); at T2 it was 2.00±0.28mm versus 1.36±0.49mm (p=0.046); and at T3 it was 4.28±0.66mm versus 3.65±0.88mm (p=0.102). No adverse effects related to the surgical procedure were observed or reported by patients. The thickness of the buccal bone plate showed no significant changes. Conclusions: Flapless piezopuncture accelerates the rate of tooth movement in orthodontic patients over the first 15 days and its effect declines over the next 45 days.

Adaptation and Psychometric Properties of the Electronic Cigarette Dependence Index (ECDI) in a Colombian Sample.

Electronic cigarettes had become a public health concern, generating the need of having standardized instruments to evaluate the consequences of their use. Objective: The goal of this study was to adapt and evaluate the validity and reliability of the Electronic Cigarette Dependence Index (ECDI) to a Colombian sample. Method: In this instrumental quantitative research, the instrument was adapted to the Spanish language, evaluated by expert judges and contested by 128 adult regular electronic cigarettes users. Results: The results suggest a single factor structure with reliable goodness of fit measures and values of internal consistency between acceptable and adequate. Conclusion: These results suggest the ECDI as a valid and reliable index to be used in Colombian samples.

El consumo de cigarrillo electrónico se ha convertido en un problema de salud publica, lo que ha generado la necesidad de contar con instrumentos estandarizados que evalúen las consecuencias de su uso. Objetivo: El objetivo del presente estudio fue adaptar y evaluar las condiciones de validez y confiabilidad del Índice de Dependencia del Cigarrillo Electrónico (IDCE) en una muestra de adultos colombianos. Método: Se realizó una investigación de tipo cuantitativa instrumental, en la cual el instrumento fue adaptado al español, evaluado por jueces y aplicado a 128 consumidores de cigarrillo electrónico. Resultados: El análisis factorial confirmatorio muestra una estructura unifactorial, con adecuados índices de bondad de ajuste, que concuerda con la propuesta teórica, y se hallan valores de consistencia interna entre aceptables y adecuados. Conclusión: Los resultados permiten indicar que el índice de dependencia del cigarrillo electrónico es una escala válida y confiable para ser utilizada en adultos colombianos.

Prevalence of Anxiety and Depression Symptoms and Their Relationship with Nutritional Status and Mortality in Patients with Colorectal Cancer.

BACKGROUND: Anxiety and depression are common in patients with cancer. The aim of this study is to determine the prevalence of anxiety and depression symptoms in colorectal cancer (CRC) patients awaiting elective surgery and whether there is an association with their preoperative nutritional status and postoperative mortality. METHODS: A prospective study was conducted on 215 patients with CRC proposed for surgery. Data about nutritional status were collected using the Global Leadership Initiative on Malnutrition (GLIM) criteria, while anxiety and depression symptoms data were collected using Hospital Anxiety and Depression Scale (HADS). RESULTS: HADS detected possible anxiety in 41.9% of patients, probable anxiety in 25.6%, possible depression in 21.9%, and probable depression in 7.9%. GLIM criteria found 116 (53.9%) patients with malnutrition. The HADS score for depression subscale was significantly higher in malnourished patients than in well-nourished (5.61 ± 3.65 vs. 3.95 ± 2.68; p = 0.001). After controlling for potential confounders, malnourished patients were 10.19 times more likely to present probable depression (95% CI 1.13-92.24; p = 0.039). Mortality was 1.9%, 4,2%, and 5.6% during admission and after 6 and 12 months, respectively. Compared to patients without depressive symptomatology, in patients with probable depression, mortality risk was 14.67 times greater (95% CI 1.54-140.21; p = 0.02) during admission and 6.62 times greater (95% CI 1.34-32.61; p = 0.02) after 6 months. CONCLUSIONS: The presence of anxiety and depression symptoms in CRC patients awaiting elective surgery is high. There is an association between depression symptoms, preoperative nutritional status, and postoperative mortality.

Hiperglicemia asociada a mortalidad en pacientes de una unidad de cuidados intensivos pediátricos

Objetivo: Determinar la asociación entre los valores de glicemia y mortalidad en la Unidad de Cuidados Intensivos Pediátricos (UCIP) del Hospital de Emergencias Pediátricas. El estudio: Estudio de cohorte retrospectivo, en pacientes pediátricos entre 1 mes y 18 años; hospitalizados en la UCIP del Hospital de Emergencias Pediátricas por más de 48 horas, durante el año 2016. Hallazgos: Se incluyeron 184 pacientes. La mediana de edad fue de 33.5 meses, la mortalidad fue de 11.54%. El análisis ajustado demostró que glucosa máxima en 24 horas y valor en la escala de Pediatric Index of Mortality 2 (PIM2) podrían presentarse como factores de riesgo para mortalidad, a diferencia de sexo, edad y valor de escala de Glasgow que se presentaron como factores protectores. Conclusión: En la serie evaluada se encontró asociación entre el valor de glucosa máxima en las primeras 24 horas y mortalidad en la UCIP. Es preciso realizar estudios prospectivos para evaluar dicha asociación

ABSTRAC Objective: To determine the association between glycemia values and mortality in the Pediatric Intensive Care Unit. The study: Retrospective cohort study in pediatric patients between 1 month and 18 years; hospitalized in the PICU for more than 48 hours. Findings: 184 patients were included. The median age was 33.5 months; mortality was 11.54%. The adjusted analysis showed that maximum glucose in 24 hours and PIM2 scale value could be presented as risk factors for mortality, unlike sex, age, and Glasgow scale value, which were presented as protective factors. Conclusion: In the series evaluated, an association was found between the value of maximum glucose in the first 24 hours and mortality in the PICU. Prospective studies are needed to assess this association.

Rabdomiólisis severa en un lactante con síndrome inflamatorio multisistémico asociado a covid -19 (mis-c)

Introducción: un caso de rabdomiólisis severa asociado a síndrome inflamatorio multisistémico asociado a COVID -19 (MIS-C). Reporte de caso: en un niño de 1 año 10 meses que presentó síntomas digestivos, mialgias, debilidad, fiebre y orina oscura. Prueba serológica COVID-19 IgM (-) IgG (+), PCR COVID-19 negativo. Creatin-quinasa (CK) inicial fue no dosable, siendo el nivel reportado más alto de 517 600 U/L. El valor de creatinina se mantuvo normal durante toda la hospitalización. Recibió Inmunoglobulina humana 2 g/Kg, Metilprednisolona 10 mg/Kg/d y ácido acetil salicílico para manejo de MIS-C. Se brindó hidratación enérgica y alcalinización de orina para manejo de rabdomiólisis. Conclusión: Evolución favorable con alta luego de diez días. Existen pocos casos reportados de rabdomiólisis asociados a MIS-C, y ninguno con valores tan altos de CK. En base a las posibles complicaciones se sugiere realizar dosaje de CK de forma rutinaria en todos los pacientes con MIS-C.

Introduction: A case of severe rhabdomyolysis associated with multisystem inflammatory syndrome related to COVID-19 (MIS-C). Case of report: is presented in a one-year 10-month-old boy who presented digestive symptoms, myalgia, weakness, fever, and dark urine. COVID-19 IgM (-) IgG (+) serological test, COVID-19 PCR negative. Initial creatine kinase (CK) presented non-dosable values, with the highest reported level being 517,600 U/L. The creatinine value remained normal throughout the hospitalization. He received human immunoglobulin 2 g/Kg, Methylprednisolone 10 mg/Kg/d, and acetylsalicylic acid to manage MIS-C. Aggressive hydration and urine alkalinization were provided to manage rhabdomyolysis. Conclusion: Positive evolution with discharge after ten days. Few reported cases of rhabdomyolysis are associated with MIS-C and none with such high CK values. Based on the possible complications, performing CK dosing in all patients with MIS-C is suggested routinely.

Dicer ablation in Kiss1 neurons impairs puberty and fertility preferentially in female mice.

Kiss1 neurons, producing kisspeptins, are essential for puberty and fertility, but their molecular regulatory mechanisms remain unfolded. Here, we report that congenital ablation of the microRNA-synthesizing enzyme, Dicer, in Kiss1 cells, causes late-onset hypogonadotropic hypogonadism in both sexes, but is compatible with pubertal initiation and preserved Kiss1 neuronal populations at the infantile/juvenile period. Yet, failure to complete puberty and attain fertility is observed only in females. Kiss1-specific ablation of Dicer evokes disparate changes of Kiss1-cell numbers and Kiss1/kisspeptin expression between hypothalamic subpopulations during the pubertal-transition, with a predominant decline in arcuate-nucleus Kiss1 levels, linked to enhanced expression of its repressors, Mkrn3, Cbx7 and Eap1. Our data unveil that miRNA-biosynthesis in Kiss1 neurons is essential for pubertal completion and fertility, especially in females, but dispensable for initial reproductive maturation and neuronal survival in both sexes. Our results disclose a predominant miRNA-mediated inhibitory program of repressive signals that is key for precise regulation of Kiss1 expression and, thereby, reproductive function.

Endoscopic Intragastric Injection of Botulinum Toxin A in Obese Patients Accelerates Weight Loss after Bariatric Surgery: Follow-Up of a Randomised Controlled Trial (IntraTox Study).

Background: Intragastric injection of botulinum toxin A (BT-A) has been shown to be effective for weight loss up to six months after administration, according to previous studies. Our objective was to determine, in patients on bariatric surgery waiting lists, the effect of BT-A on weight loss in the pre- and postoperative period and to analyse if there are different responses based on Body Mass Index (BMI). Methods: We performed a follow-up analysis of the IntraTox study, which included 46 patients on bariatric surgery waiting lists in a single-centre, randomised, double-blind, placebo-controlled clinical trial. The treatment group received intragastric BT-A, whereas the control group received physiological saline solution. The one-time procedure was performed at the time of diagnostic endoscopy 7−8 months before surgery. Weight loss was evaluated at admission and after 4 and 12 weeks from the bariatric surgery. Our analysis was stratified by BMI at randomisation. Results: weight loss percentage on the day of surgery, with respect to the initial visit, was −4.5 ± 3.9% for the control group vs. −7.6 ± 4.2%, for the treatment group (p = 0.013). Weight loss percentage tended to remain greater in the treatment group one month after the intervention (−12.7 ± 4.7% vs. −15.2 ± 4.6%, p = 0.07) and become similar three months after (−21.6 ± 4.7% vs. −21.6 ± 4.6%). After stratifying by BMI, only patients with BMI over 50 kg/m2 allocated to the treatment group obtained a greater weight loss at the end of the trial, the day of surgery, and one month after, compared with the placebo group (−4.9 ± 4.9%, −10.8 ± 5.3% and −17.1 ± 3.8% vs. −0.1 ± 2.6%, −4.3 ± 3.2% and −12.8 ± 4.1%, respectively (p < 0.05). Conclusions: intragastric injection of BT-A is effective to achieve significant weight loss, especially in extreme obesity. Its use before bariatric surgery enhances perioperative weight loss.

Poor Physical Performance Is Associated with Postoperative Complications and Mortality in Preoperative Patients with Colorectal Cancer.

Introduction: Poor physical performance has been shown to be a good predictor of complications in some pathologies. The objective of our study was to evaluate, in patients with colorectal neoplasia prior to surgery, physical performance and its relationship with postoperative complications and in-hospital mortality, at 1 month and at 6 months. Methods: We conducted a prospective study on patients with preoperative colorectal neoplasia, between October 2018 and July 2021. Physical performance was evaluated using the Short Physical Performance Battery (SPPB) test and hand grip strength (HGS). For a decrease in physical performance, SPPB < 10 points or HGS below the EWGSOP2 cut-off points was considered. Nutritional status was evaluated using subjective global assessment (SGA). The prevalence of postoperative complications and mortality during admission, at 1 month, and at 6 months was evaluated. Results: A total of 296 patients, mean age 60.4 ± 12.8 years, 59.3% male, were evaluated. The mean BMI was 27.6 ± 5.1 kg/m2. The mean total SPPB score was 10.57 ± 2.07 points. A total of 69 patients presented a low SPPB score (23.3%). Hand grip strength showed a mean value of 33.1 ± 8.5 kg/m2 for men and 20.7 ± 4.3 kg/m2 for women. A total of 58 patients presented low HGS (19.6%). SGA found 40.2% (119) of patients with normal nourishment, 32.4% (96) with moderate malnutrition, and 27.4% (81) with severe malnutrition. Postoperative complications were more frequent in patients with a low SPPB score (60.3% vs. 38.6%; p = 0.002) and low HGS (64.9% vs. 39.3%, p = 0.001). A low SPPB test score (OR 2.57, 95% CI 1.37−4.79, p = 0.003) and low HGS (OR 2.69, 95% CI 1.37−5.29, p = 0.004) were associated with a higher risk of postoperative complications after adjusting for tumor stage and age. Patients with a low SPPB score presented an increase in in-hospital mortality (8.7% vs. 0.9%; p = 0.021), at 1 month (8.7% vs. 1.3%; p = 0.002) and at 6 months (13.1% vs. 2.2%, p < 0.001). Patients with low HGS presented an increase in mortality at 6 months (10.5% vs. 3.3%; p = 0.022). Conclusions: The decrease in physical performance, evaluated by the SPPB test or hand grip strength, was elevated in patients with colorectal cancer prior to surgery and was related to an increase in postoperative complications and mortality.

Burnout y depresión en médicos de medicina interna y unidad de cuidados intensivos en Riobamba, Ecuador / Burnout and depression in internal medicine doctors and intensive care unit in Riobamba, Ecuador

RESUMEN Introducción: El síndrome de burnout es conceptualizado como la forma inadecuada de afrontar el estrés crónico dado por exposición crónica a condiciones laborales inadecuadas. Afecta la salud mental, general y el rendimiento laboral de las personas. Objetivo: Determinar la presencia de síndrome de burnout en el personal de medicina interna y la Unidad de Cuidados Intensivos del Hospital Provincial General Docente de Riobamba, Chimborazo, Ecuador. Métodos: Se realizó una investigación básica, no experimental, transversal, descriptiva y correlacional en un universo de 77 trabajadores, de los cuales 65 conformaron la población de estudio. Se aplicaron cuestionarios para identificar presencia de síndrome de burnout, depresión y rendimiento laboral. Se utilizó la prueba de correlación de Pearson para identificar relación entre variables. Resultados: Predominio de pacientes con síndrome de burnout (52,31 %), depresión posible (47,69 %) y autopercepción de rendimiento laboral como adecuado (44,62 %). Dentro de las subescalas de la enfermedad la de mayor afectación fue la de realización personal con un 47,69 % de trabajadores en nivel medio y 39,23 % en nivel alto. Conclusiones: Existió predominio de trabajadores con síndrome de burnout y se identificó una correlación positiva fuerte entre las variables depresión y síndrome de burnout, así como entre esta variable y rendimiento laboral. Entre las variables depresión y rendimiento laboral la correlación obtenida fue positiva media.

ABSTRACTS Introduction: Burnout syndrome is conceptualized as the inadequate way of coping with chronic stress caused by chronic exposure to inadequate working conditions. It affects the mental and general health and the work performance of the people. Objective: to determine the presence of Burnout syndrome in the internal medicine staff and the intensive care unit of the Provincial General Teaching Hospital of Riobamba, Chimborazo, Ecuador. Methods: A basic, non-experimental, cross-sectional, descriptive and correlational research was carried out in a universe of 77 workers, of which 65 made up the study population. Questionnaires were applied to identify the presence of burnout syndrome, depression and work performance. Pearson's correlation test was used to identify a relationship between variables. Results: prevalence of patients with burnout syndrome (52.31%), possible depression (47.69%) and self-perception of work performance as adequate (44.62%). Within the subscales of the disease, the one with the greatest affectation was that of personal fulfillment with 47.69% of workers in the medium level and 39.23% in the high level. Conclusions: there was a predominance of workers with burnout syndrome and a strong positive correlation was identified between the variables depression and burnout syndrome, as well as between this variable and job performance. Among the variables depression and work performance, the correlation obtained was positive medium.

Cleft Lip and Palate Research in Low- and Middle-income Countries: A Scientometric Analysis.

Cleft lip and palate (CLP) comprise over 90% of the world's congenital anomalies and cause significant disability worldwide, while disproportionally burdening low- and middle-income countries (LMICs). Research can help inform strategies that reduce disparities in accessing CLP care. We performed a scientometric analysis of CLP research in LMICs to identify influential contributors and themes. METHODS: The authors searched seven citation databases accessed via Web of Science, from inception to March 2, 2021. Social network analysis was done using VOSviewer. The Kruskal-Wallis test and linear regression were used. RESULTS: In total, 1561 articles authored by 6414 researchers affiliated with 2113 organizations in 119 countries were included. Most authors (n = 6387, 99.6%) had published two or more articles. The USA (454 articles), Brazil (211 articles), China (175 articles), and India (127 articles) published the most. The most prolific institutions were the University of Sao Paulo (94 articles), the University of Pittsburgh (57 articles), and the University of Iowa (55 articles). Marazita ML (33 articles), Shi B (27 articles), and Murray JC (22 articles) had the highest number of publications. An estimated 510 articles (32.7%) were focused on epidemiology, 240 (15.4%) on management, and 54 (3.5%) on global plastic surgery for CLP. CONCLUSIONS: LMICs are disproportionally burdened by CLP, but research is limited and often produced by high-income countries. This study elucidates partnership and health system strengthening opportunities to improve LMIC research capacity and ultimately informs the management and outcomes for patients with CLP.

Do the heel-rise test and isometric strength improve after Achilles tendon repair using Dresden technique?

BACKGROUND: Achilles' tendon ruptures result in impaired plantar flexion strength and endurance. It is interesting to know the plantar flexion strength, the number of heel-rise repetitions, and the maximal calf circumference following Achilles' tendon ruptures repair. METHODS: Both the injured and non-injured legs of thirty male patients with Achilles' tendon ruptures treated with the percutaneous Dresden technique were compared with the ankle function of 30 healthy participants. Rehabilitation involved partial weight-bearing for three weeks and then increased to full weight-bearing and ankle exercises. RESULTS: The injured legs had weaker plantar flexion strength (1.64 ± 0.17 Nm/kg) compared with the non-injured legs (1.91 ± 0.24 Nm/kg; p = 0.002) and the healthy participants' legs (1.93 ± 0.32 Nm/kg; p < 0.001). The non-injured leg had greater ability in doing heel-rise repetitions (39.4 ± 6.1 rep.) compared with the injured legs (37.2 ± 5.7 rep.; p < 0.023) and the healthy participants' legs (31.0 ± 13.0 rep.; p < 0.001). CONCLUSIONS: The injured leg had not recovered full isometric strength but had improved heel-rise repetition.

Prospective study of diagnostic accuracy in the detection of high-grade prostate cancer in biopsy-naïve patients with clinical suspicion of prostate cancer who underwent the Select MDx test.

OBJECTIVES: This study aimed to externally validate the diagnostic accuracy of the Select MDx test for Significant prostate cancer (Sig PCa) (ISUP > 1), in a contemporaneous, prospective, multicenter cohort with a prostate-specific antigen (PSA) between 3 and 10 ng/ml and a non-suspicious digital rectal examination. METHODS AND PARTICIPANTS: For all enrolled patients, the Select Mdx test, the risk calculator ERSPC3 + DRE, and a prostatic magnetic resonance imaging (MRI) were carried out. Subsequently, a systematic 12-core trans-rectal biopsy and a targeted biopsy, in the case of a prostate imaging-reporting and data system (PIRADS) > 2 lesion (max three lesions), were performed. To assess the accuracy of the Select MDx test in the detection of clinically Sig PCa, the test sensitivity was evaluated. Secondary objectives were specificity, negative predictive value (NPV), positive predictive value (PPV), and area under the curve (AUC). A direct comparison with the ERSPC + DRE risk calculator and MRI were also performed. We also studied the predictive ability to diagnose Sig PCa from the combination of the Select MDx test with MRI using clinical decision-curve analysis. RESULTS: There were 163 patients enrolled after meeting the inclusion criteria and study protocol. The Select MDx test showed a sensitivity of 76.9% (95% CI, 63.2-87.5), 49.6% specificity (95% CI, 39.9-59.2), 82.09% (95% CI, 70.8-90.4) NPV, and 41.67% (95% CI, 31.7-52.2) PPV for the diagnosis of Sig PCa. COR analysis was also performed, which showed an AUC of 0.63 (95% CI, 0.56-0.71). There were no differences in the accuracy of Select MDx, ERSPC + DRE, or MRI. The combination of Select MDX + MRI showed the highest impact in the decision-curve analysis, with an NPV of 93%. CONCLUSION: Our study showed a worse performance for the SelectMdx test than previously reported, within a cohort of patients with a PSA 3-10 ng/ml and a normal DRE, with results similar to those from ERSPC + DRE RC and MRI, but with an improvement in the usual PSA pathway. A combination of the Select Mdx test and MRI could improve accuracy, but studies specifically evaluating this scenario with a cost-effective analysis are needed.

Tolerancia a la fatiga muscular isométrica de alta intensidad transcurrido un año de evolución de tenorrafias del tendón de Aquiles: resultados preliminares / Tolerance to high intensity isometric muscle fatigue after one year of evolution of Achilles tendon tenorrhaphies: preliminary results

Introducción: Desafortunadamente, posterior a una tenorrafia del tendón de Aquiles existe abandono de la práctica deportiva. Frente ello, son desconocidas las causas y si la capacidad de tolerancia a la fatiga muscular podría ser un factor en disfunción. Objetivo: Comparar la pendiente y tiempo de la fatiga isométrica de la musculatura plantiflexora superficial entre participantes con una tenorrafia del tendón de Aquiles posterior a 1 año y participantes sanos. Métodos: Diez hombres con tenorrafia Aquiliana y tratamiento kinésico convencional (36,7 ± 10,2 años, 172,6 ± 6,1 cm, 83,1 ± 10,9 kg, IMC 27,3 ± 2,8 kg/m2) y diez participantes sanos (29,9 ± 12,0 años, 171,8 ± 5,8 cm, 81,3 ± 12,0 peso corporal, IMC 27,5 ± 3,7 kg/m2) fueron incorporados. Los participantes realizaron una prueba plantiflexora isométrica en un dinamómetro mientras se registró una señal electromiográfica en gastrocnemio medial con un electrodo de alta densidad. La pendiente de la frecuencia peak y el tiempo hasta la fatiga fueron comprados con una prueba-t (α = 5%). Resultados: No se observaron diferencias de las pendientes entre ambos grupos (grupo sano, -0,0051 ± 0,0078 Hz/s vs grupo con tenorrafia, -0,0082 ± 0,0091 Hz/s; p = 0.513). No hubo diferencias para el tiempo hasta la fatiga entre los grupos (grupo sano, 36,1 ± 17,9 s vs grupo con tenorrafia, 32,8 ± 16,0 s; p = 0.692). Conclusión: La tolerancia a la fatiga muscular y el tiempo necesario para sostenerla en alta intensidad (90%) no es un factor de disfunción en pacientes con tenorrafia Aquiliana y terapia kinésica convencional con 1 año postquirúrgico.

Introduction: Unfortunately, after a tenorrhaphy of the Achilles tendon, there is an abandonment of sports practice. Both their causes are unknown, and if the ability to tolerate muscle fatigue may be in dysfunction. Objetive: Here, we compared the fatigue slope of the peak frequency and the time to isometric fatigue of plantar flexors between participants with an Achilles tendon tenorrhaphy after one year of evolution and healthy participants. Methods: Ten men with Achilles tenorrhaphy and traditional physical therapy (36.7 ± 10.2 years, 172.6 ± 6.1 cm, 83.1 ± 10.9 kg, BMI 27.3 ± 2.8 kg/m2) and ten healthy participants (29.9 ± 12.0 years, 171.8 ± 5.8 cm, 81.3 ± 12.0 kg, BMI 27.5 ± 3.7 kg/m2) were included. The participants performed an isometric contraction of plantar flexors on a dynamometer while high-density electromyography signals were recorded. The slope of peak frequency and time to fatigue were compared with a t-test (α = 5%). Results: For frequency slope there was not difference between groups (Healthy group = -0.0051 ± 0.0078 Hz/s vs Tenorrhaphy group = -0.0082 ± 0.0091 Hz/s; p = 0.513). For time to fatigue there was not difference between groups (Healthy group = 36.1 ± 17.9 s vs Tenorrhaphy group = 32.8 ± 16.0 s; p = 0.692). Conclusion: The tolerance to muscle isometric fatigue and the time to fatigue required to sustain it at a high intensity (90%) is not a factor of dysfunction in patients with Achilles tenorrhaphy treated with conventional physical therapy.

Clinical, Cellular, and Molecular Evidence of the Additive Antitumor Effects of Biguanides and Statins in Prostate Cancer.

CONTEXT: Prostate cancer (PCa) is one of the leading causes of cancer-related death among the male population worldwide. Unfortunately, current medical treatments fail to prevent PCa progression in a high percentage of cases; therefore, new therapeutic tools to tackle PCa are urgently needed. Biguanides and statins have emerged as antitumor agents for several endocrine-related cancers. OBJECTIVE: To evaluate: (1) the putative in vivo association between metformin and/or statins treatment and key tumor and clinical parameters and (2) the direct effects of different biguanides (metformin/buformin/phenformin), statins (atorvastatin/simvastatin/lovastatin), and their combination, on key functional endpoints and associated signalling mechanisms. METHODS: An exploratory/observational retrospective cohort of patients with PCa (n = 75) was analyzed. Moreover, normal and tumor prostate cells (normal [RWPE-cells/primary prostate cell cultures]; tumor [LNCaP/22RV1/PC3/DU145 cell lines]) were used to measure proliferation/migration/tumorsphere-formation/signalling pathways. RESULTS: The combination of metformin+statins in vivo was associated to lower Gleason score and longer biochemical recurrence-free survival. Moreover, biguanides and statins exerted strong antitumor actions (ie, inhibition of proliferation/migration/tumorsphere formation) on PCa cells, and that their combination further decreased; in addition, these functional parameters compared with the individual treatments. These actions were mediated through modulation of key oncogenic and metabolic signalling pathways (ie, AR/mTOR/AMPK/AKT/ERK) and molecular mediators (MKI67/cMYC/androgen receptor/cell-cycle inhibitors). CONCLUSIONS: Biguanides and statins significantly reduced tumor aggressiveness in PCa, with this effect being more potent (in vitro and in vivo) when both compounds are combined. Therefore, given the demonstrated clinical safety of biguanides and statins, our results suggest a potential therapeutic role of these compounds, especially their combination, for the treatment of PCa.

Endoscopic intragastric injection of botulinum toxin A in obese patients on bariatric surgery waiting lists: A randomised double-blind study (IntraTox study).

BACKGROUND & AIMS: Several studies have evaluated the effect of intragastric injection of botulinum toxin A to treat obesity, achieving mixed results. Our objective is to determine the effect of intragastric botulinum toxin A on weight loss, satiety, biomarkers, and quality of life of obese patients prior bariatric surgery. METHODS: Design: single-centre, randomised, double-blind, placebo-controlled clinical trial in 52 obese patients on bariatric surgery waiting lists. Two-arm parallel: the treatment group was administered intragastric botulinum toxin A by endoscopy, whereas the control group was administered physiological saline solution. Weight loss was evaluated at weeks 2, 4, 8, 16, and 24, as well as changes in body composition, satiety (Visual analogue scale (VAS) and GCSI questionnaire), quality of life (GIQLI questionnaire), and biomarkers of satiety and appetite. RESULTS: Weight loss at weeks 2, 4, 8, 16, and 24 after the endoscopy, with respect to the basal visit, was 0.6 ± 2 kg, 0.4 ± 2.7 kg, 0.4 ± 3.1 kg, 0.2 ± 4.5 kg, and 0.6 ± 4.3 kg for the control group vs 1.9 ± 2.1 kg, 2 ± 2.6 kg, 2.8 ± 4.1 kg, 3.5 ± 5.3 kg, and 4.5 ± 7 kg for the treatment group, respectively, being differences between groups significant at all times (p = 0.016, 0.031, 0.014, 0.021, and 0.023, respectively). Treatment group patients obtained a significantly higher score for GIQLI questionnaire compared with baseline (104.4 ± 13.9 points vs 97.7 ± 15.6 points; p = 0.024), showing a significant improvement in the section of subjective physical capacity. No significant differences were found regarding perception of satiety, or biomarkers of satiety and appetite. CONCLUSIONS: Intragastric injection of botulinum toxin A is an effective and safe procedure to achieve a moderate weight loss and improve quality of life. Registered under clinicaltrialsregister.eu Identifier EudraCT number 2015-004391-29 https://www.clinicaltrialsregister.eu/ctr-search/trial/2015-004391-29/ES.