Postmortem mitochondria function in longissimus lumborum of Angus and Brahman steers.

Mitochondria function and integrity may impact postmortem metabolism and meat quality development. Adaptations in heat tolerant Brahman may persist to limit cellular stress postmortem. Our objective was to evaluate glycolysis, pH decline, and mitochondria function in longissimus lumborum (LL) from Angus and Brahman steers (N = 28) early postmortem (1 to 6 h) and after rigor (24 h). We evaluated metabolites of anaerobic glycolysis, ATP, pH, and temperature, and determined mitochondria oxygen consumption rate (OCR) in permeabilized fibers. The main effects of breed (b) and time (t) and the interaction were tested. Brahman LL contained greater ATP during the first 6 h postmortem; Brahman also tended to exhibit a slower pH decline (b × t, P = 0.07) and more rapid temperature decline (b × t, P < 0.001), but metabolites of anaerobic glycolysis were not different. Mitochondria in Brahman and Angus LL were well-coupled and respired at 1 h postmortem. However, outer membrane integrity became increasingly compromised postmortem (t, P < 0.001). Brahman tended to exhibit greater electron transport system capacity (b, P < 0.1) and had greater capacity for oxidative phosphorylation (complex I and II substrates) at 6 h compared with Angus (P < 0.001). In totality, greater ATP, slower pH decline, and enhanced mitochondria capacity indicate that Brahman possess mitochondrial properties or cellular adaptations that help protect the cell during energy stress postmortem. Slower pH and more rapid temperature decline in LL from Brahman may also help preserve mitochondria function postmortem.

Guillain-Barré Syndrome After a SARS-CoV-2 Vaccine.

The worldwide mass vaccination campaign against COVID-19 has been the largest one ever undertaken. Although the short-term safety profile of the different vaccines has been well established, neuroinflammatory complications have been described, including rare cases of acute demyelinating inflammatory polyneuropathy. We report a 63-year-old man who presented to the emergency department with proximal muscle weakness and paresthesia. He had received the first dose of the AZD1222 SARS-CoV-2 vaccine (Oxford, AstraZeneca) two weeks before presentation. The diagnosis of Guillain-Barré syndrome (GBS) was confirmed by clinical features, cerebrospinal fluid analysis, and electromyography. On the second hospital day, progression to flaccid tetraplegia, cranial nerve involvement, and respiratory failure, requiring invasive mechanical ventilation, were noted, and he was admitted to the intensive care unit. Despite the prompt diagnosis and immunosuppressive treatment initiation, the patient was left with severe disability. Although the COVID-19 vaccination was generally safe and socially beneficial, individual adverse reactions, including neuroinflammatory severe complications, may occur.

Analysis of twelve genomes of the bacterium Kerstersia gyiorum from brown-throated sloths (Bradypus variegatus), the first from a non-human host.

Kerstersia gyiorum is a Gram-negative bacterium found in various animals, including humans, where it has been associated with various infections. Knowledge of the basic biology of K. gyiorum is essential to understand the evolutionary strategies of niche adaptation and how this organism contributes to infectious diseases; however, genomic data about K. gyiorum is very limited, especially from non-human hosts. In this work, we sequenced 12 K. gyiorum genomes isolated from healthy free-living brown-throated sloths (Bradypus variegatus) in the Parque Estadual das Fontes do Ipiranga (São Paulo, Brazil), and compared them with genomes from isolates of human origin, in order to gain insights into genomic diversity, phylogeny, and host specialization of this species. Phylogenetic analysis revealed that these K. gyiorum strains are structured according to host. Despite the fact that sloth isolates were sampled from a single geographic location, the intra-sloth K. gyiorum diversity was divided into three clusters, with differences of more than 1,000 single nucleotide polymorphisms between them, suggesting the circulation of various K. gyiorum lineages in sloths. Genes involved in mobilome and defense mechanisms against mobile genetic elements were the main source of gene content variation between isolates from different hosts. Sloth-specific K. gyiorum genome features include an IncN2 plasmid, a phage sequence, and a CRISPR-Cas system. The broad diversity of defense elements in K. gyiorum (14 systems) may prevent further mobile element flow and explain the low amount of mobile genetic elements in K. gyiorum genomes. Gene content variation may be important for the adaptation of K. gyiorum to different host niches. This study furthers our understanding of diversity, host adaptation, and evolution of K. gyiorum, by presenting and analyzing the first genomes of non-human isolates.

Genomic features and comparative analysis of a multidrug-resistant Acinetobacter bereziniae strain infecting an animal: a novel emerging one health pathogen?

Acinetobacter bereziniae has recently gained medical notoriety due to its emergence as a multidrug resistance and healthcare-associated pathogen. In this study, we report the whole-genome characterization of an A. bereziniae strain (A321) recovered from an infected semiaquatic turtle, as well as a comparative analysis of A. bereziniae strains circulating at the human-animal-environment interface. Strain A321 displayed a multidrug resistance profile to medically important antimicrobials, which was supported by a wide resistome. The novel Tn5393m transposon and a qnrB19-bearing ColE1-like plasmid were identified in A321 strain. Novel OXA-229-like ß-lactamases were detected and expression of OXA-931 demonstrated a 2-64-fold increase in the minimum inhibitory concentration for ß-lactam agents. Comparative genomic analysis revealed that most A. bereziniae strains did not carry any antimicrobial resistance genes (ARGs); however, some strains from China, Brazil, and India harbored six or more ARGs. Furthermore, A. bereziniae strains harbored conserved virulence genes. These results add valuable information regarding the spread of ARGs and mobile genetic elements that could be shared not only between A. bereziniae but also by other bacteria of clinical interest. This study also demonstrates that A. bereziniae can spill over from anthropogenic sources into natural environments and subsequently be transmitted to non-human hosts, making this a potential One Health bacteria that require close surveillance.

Modelling the factors affecting the spatiotemporal distribution of cabbage stem flea beetle (Psylliodes chrysocephala) larvae in winter oilseed rape (Brassica napus) in the UK.

BACKGROUND: Cabbage stem flea beetle (CSFB; Psylliodes chrysocephala L.) management in oilseed rape (Brassica napus L.) has become an urgent issue in the absence of permitted and effective insecticides. Understanding the meteorological and management factors affecting their population dynamics has become critical to the development of pest management strategies. RESULTS: The spatio-temporal changes in CSFB larval populations were assessed both in autumn and spring, in the UK from 2003 to 2017 (a period encompassing pre-and post-neonicotinoid insecticide restriction). After the neonicotinoid ban in 2013, the number of larvae both in autumn and spring increased 10-fold in the UK. When neonicotinoids were available, later sown crops contained fewer larvae than early sown crops, and bigger fields had fewer larvae than smaller fields, whereas after the ban, bigger fields tended to have more larvae than smaller fields. Wet and mild/hot Septembers were related with higher numbers of larvae when neonicotinoids were available and with lower larval numbers after the neonicotinoid ban. Low temperatures in December and January combined with high rainfall were related with high numbers of larvae in spring both before and after the neonicotinoid ban. CONCLUSION: This study will help to produce decision support systems that allow future predictions of regional CSFB population changes and will help growers and consultants to adjust their management methods to reduce the risk of high infestations. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Desarrollo de un modelo por inteligencia artificial con hemodinamia no invasiva para predecir preeclampsia en embarazos de alto riesgo / Artificial Intelligence Modeling with Non-Invasive Hemodynamics to Predict Preeclampsia in High-Risk Pregnancy

RESUMEN Introducción: la preeclampsia (PE) es la principal causa de morbimortalidad materno-fetal en nuestro país. Alteraciones hemodinámicas precoces durante el embarazo podrían predecir la evolución a PE. El machine learning (ML) permite el hallazgo de patrones ocultos que podrían detectar precozmente el desarrollo de PE. Objetivos: desarrollar un árbol de clasificación con variables de hemodinamia no invasiva para predecir precozmente desarrollo de PE. Material y métodos: estudio observacional prospectivo con embarazadas de alto riesgo (n=1155) derivadas del servicio de Obstetricia desde enero 2016 a octubre 2022 para el muestreo de entrenamiento por ML con árbol de clasificación j48. Se seleccionaron 112 embarazadas entre semanas 10 a 16, sin tratamiento farmacológico y que completaron el seguimiento con el término de su embarazo con evento final combinado (PE): preeclampsia, eclampsia y síndrome HELLP. Se evaluaron simultáneamente con cardiografía de impedancia y velocidad de onda del pulso y con monitoreo ambulatorio de presión arterial de 24 hs (MAPA). Resultados: presentaron PE 17 pacientes (15,18%). Se generó un árbol de clasificación predictivo con las siguientes variables: índice de complacencia arterial (ICA), índice cardíaco (IC), índice de trabajo sistólico (ITS), cociente de tiempos eyectivos (CTE), índice de Heather (IH). Se clasificaron correctamente el 93,75%; coeficiente Kappa 0,70, valor predictivo positivo (VPP) 0,94 y negativo (VPN) 0,35. Precisión 0,94, área bajo la curva ROC 0,93. Conclusión: las variables ICA, IC, ITS, CTE e IH predijeron en nuestra muestra el desarrollo de PE con excelente discriminación y precisión, de forma precoz, no invasiva, segura y con bajo costo.

ABSTRACT Background: Preeclampsia (PE) is the main cause of maternal-fetal morbidity and mortality in our country. Early hemodynamic changes during pregnancy could predict progression to PE. Machine learning (ML) enables the discovery of hidden patterns that could early detect PE development. Objectives: The aim of this study was to build a classification tree with non-invasive hemodynamic variables for the early prediction of PE occurrence. Results: Seventeen patients (15.18%) presented PE. A predictive classification tree was generated with arterial compliance index (ACI), cardiac index (CI), cardiac work index (CWI), ejective time ratio (ETR), and Heather index (HI). A total of 93.75% patients were correctly classified (Kappa 0.70, positive predictive value 0.94 and negative predictive value 0.35; accuracy 0.94, and area under the ROC curve 0.93). Conclusion: ACI, CI, CWI, ETR and HI variables predicted the early development of PE in our sample with excellent discrimination and accuracy, non-invasively, safely and at low cost.

Gram-negative bacterial diversity and evidence of international clones of multidrug-resistant strains in zoo animals.

Enterobacterales and Pseudomonas aeruginosa have been colonizing or infecting wild hosts and antimicrobial-resistant strains are present in mammals and birds. Furthermore, international high-risk clones of multidrug-resistant Escherichia coli are identified and the implications of multidrug-resistant Gram-negative bacteria in zoo animals are discussed.

Establishing hematologic and biochemical reference intervals for the endangered Lear's macaw (Anodorhynchus leari).

BACKGROUND: The Lear's macaw, Anodorhynchus leari (Psittaciformes, Psittacidae), is an endemic species of the Caatinga region in Brazil. With only a few free-living individuals that are constantly under threat from agricultural clearance, hunting, and trapping, A. leari is classified as "endangered" by the Red Book of Endangered Brazilian Fauna and by the International Union for Conservation of Nature. At the same time, the number of individuals in captivity has been growing due to the efforts of biologists and veterinarians in zoological parks to reproduce this species. Thus, having species-specific reference intervals for hematologic and biochemical measurands is essential to assess the health status of these captive and wild birds and guarantee their reproductive success. OBJECTIVES: This study aimed to determine reference intervals for hematologic and biochemical measurands for A. leari kept in captivity in São Paulo Zoo, Brazil. METHODS: Blood samples from 32 individuals were selected based on inclusion and exclusion criteria. Only samples from adults and healthy individuals were included in this study. All statistical analyses were performed according to the American Society for Veterinary Clinical Pathology guidelines and available literature. RESULTS: Reference values and reference intervals were determined for the captive population of Anodorhynchus leari. CONCLUSIONS: This is the first study to establish reference intervals for A. leari, which can aid the veterinarian in the interpretation of laboratory test results, helping in the diagnosis, treatment, and monitoring of diseases of this endangered species of Brazilian fauna.

Prevalence and incidence of canine visceral leishmaniasis and its clinical-immunological features in an endemic area of the Brazilian Amazon.

BACKGROUND: A cohort study for 2 years period analysed the prevalence, incidence and clinical-immunological features of canine Leishmania (L.) chagasi-infection in 316 mongrel dogs in a visceral leishmaniasis-endemic area in Pará State, Brazil. OBJECTIVE/METHODS: Diagnosis of infection was performed by the indirect fluorescent antibody test (IFAT-IgG), the leishmanin skin test (LST) and a parasite search (from the popliteal lymph node aspiration) at the beginning of the study and at 6, 12 and 24 months intervals. RESULTS: IFAT/LST revealed three immune profiles of infection: (I) IFAT(+) /LST(-) (81), (II) IFAT(-) /LST(+) (17) and (III) IFAT(+) /LST(+) (13). Prevalence of profiles I, II and III were 25.6, 5.4 and 4.1%, and an overall prevalence 35.1%. Incidence of profiles I, II and III were 5.4, 0.3 and 0.0%, and an overall incidence 5.7% dogs per month. Incidence at the age ranges <1 year, ≥1 year, <7 years and ≥7 years evidenced a highest rate in the age range <1 year (6.6% dogs per month). Parasitological diagnosis was positive in 19% dogs at the prevalence (85.7% profile I), and in 11% at the incidence (100% profile I). The clinical picture of 179 infected dogs showed 145 (81%) of profile I (82% subclinical); 21 (11.7%) of profile II (100% subclinical); and 13 (7.3%) of profile III (84.6% subclinical). Conversion from subclinical to sick dogs was higher (p < 0.05) in profile I (40.2%) than in profiles II (5.8%) and III (9%). Immunological conversion showed that only 3.2% of profile I dogs (prevalence) converted to LST(+) (two at the end of the first 6 months and 1 after 24 months), while 82.3% of profile II dogs converted to IFAT(+) (11 in the first 6 months, whereas three after 12 months). A 100% death rate was observed in dogs from profile I alone. CONCLUSION: These results reinforce the need of adopting preventive strategies against CVL as early as in the first semester of the dog's life.

COVID-19: A Possible Cause of Spontaneous Pneumoperitoneum.

Introduction: Pneumoperitoneum is the presence of air within the peritoneal cavity and is mostly caused by organ rupture. Spontaneous pneumoperitoneum accounts 5% to 15% of the cases and occurs in the absence of organ damage. The pulmonary origin of pneumoperitoneum is unusual, and probably associated with mechanical ventilation and alveolar leak. In patients with coronavirus disease 2019 (COVID-19) there are some reports of air leak, like pneumothorax, pneumomediastinum, pneumoperitoneum, and subcutaneous emphysema. Case presentation: We present the case of a 70-year-old man with COVID-19 pneumonia admitted to the Intensive Care Unit (ICU). Since admission he was on Non-Invasive Ventilation (NIV), without improvement, needing Invasive Mechanical Ventilation (IMV) due to severe respiratory failure. Five days after IMV despite protective lung ventilation, massive spontaneous subcutaneous emphysema, pneumomediastinum and pneumoperitoneum were diagnosed. Besides initial conservative management 12 hours later, the patient developed abdominal compartment syndrome requiring percutaneous needle decompression. Conclusions: Pneumoperitoneum can be considered a rare complication of COVID-19 pneumonia and its management, resulting not only from the viral pulmonary but also from secondary causes. Conservative management should be usually enough. However, in the presence of abdominal compartment syndrome prompt recognition and treatment are crucial and eventually lifesaving.

[Integrated mother-child care. Effects on adherence and knowledge of contraceptive methods]. / Atención integrada madre-niño. Efectos sobre adherencia y conocimientos de métodos anticonceptivos.

INTRODUCTION: Scientific evidence suggests that mother-child joint care strategies would facilitate knowledge of contraceptive methods (MAC) and their access. The objective was to evaluate the effect of the Integrated Mother and Child Care Model on adherence and knowledge of CAM in women during the first postpartum semester. METHODS: An intervention study was carried out, 2 groups were formed, GI: intervention group (3 controls up to 6 months postpartum) and GC: control group (one control at 6 months postpartum). The intervention consisted of face-to-face counseling about MAC combined with informative brochures and WhatsApp⌖ messages. Sociodemographic data, gynecological and obstetric history, use and knowledge of contraceptive methods were collected. Adherence to the use and knowledge of MAC were compared in both groups at 6 months postpartum. The analysis was performed using R software version 4.0.3. RESULTS: Thirty-nine women were incorporated into each group. A difference was found in the use of MAC between groups at 6 months (92.3% vs. 64.1%), its use being higher in GI. Significant differences were found in the knowledge of some MAC at 6 months. A higher percentage of women in GI knew about birth control pills (p = 0.009), tubal ligation (p = 0.04) and vasectomy (p = 0.010), compared to GC. DISCUSSION: Early postpartum intervention with various communication and information strategies can be useful to choose the MAC that is considered most appropriate for each woman and its correct use.

Introducción: La evidencia científica sugiere que estrategias de atención conjunta madre-hijo facilitarían el conocimiento de métodos anticonceptivos (MAC) y su acceso. El objetivo fue evaluar el efecto del Modelo de atención integrada de la madre y el niño sobre la adherencia y conocimientos de MAC en mujeres durante el primer semestre postparto. Métodos: Se realizó un estudio de intervención, se conformaron 2 grupos, GI: grupo de intervención (3 controles hasta los 6 meses postparto) y GC: grupo control (un control a los 6 meses postparto). La intervención consistió en asesoramiento presencial acerca de MAC combinada con folletería informativa y mensajes de WhatsApp⌖. Se recabaron datos sociodemográficos, antecedentes gineco-obstétricos, uso y conocimientos de MAC. Se comparó la adherencia al uso y el conocimiento de MAC en ambos grupos a los 6 meses post parto. El análisis se realizó mediante el software R versión 4.0.3. Resultados: Se incorporaron 39 mujeres en cada grupo. Se halló una diferencia en el uso de MAC entre grupos a los 6 meses (92.3% vs. 64.1%), siendo más elevado su uso en el GI. Se hallaron diferencias significativas en el conocimiento de algunos MAC a los 6 meses. Un mayor porcentaje de mujeres del GI conocía las pastillas anticonceptivas (p = 0.009), ligadura de trompas (p = 0.04) y la vasectomía (p = 0.010), en comparación con el GC. Discusión: La intervención en el postparto temprano con diversas estrategias de comunicación e información pueden ser útiles para elegir el MAC que se considere más adecuado para cada mujer y su utilización correcta.

Atención integrada madre-niño. efectos sobre adherencia y conocimientos de métodos anticonceptivos / Integrated mother-child care. Effects on adherence and knowledge of contraceptive methods

Resumen Introducción : La evidencia científica sugiere que es trategias de atención conjunta madre-hijo facilitarían el conocimiento de métodos anticonceptivos (MAC) y su acceso. El objetivo fue evaluar el efecto del Modelo de atención integrada de la madre y el niño sobre la adherencia y conocimientos de MAC en mujeres durante el primer semestre postparto. Métodos : Se realizó un estudio de intervención, se conformaron 2 grupos, GI: grupo de intervención (3 con troles hasta los 6 meses postparto) y GC: grupo control (un control a los 6 meses postparto). La intervención consistió en asesoramiento presencial acerca de MAC combinada con folletería informativa y mensajes de WhatsApp®. Se recabaron datos sociodemográficos, an tecedentes gineco-obstétricos, uso y conocimientos de MAC. Se comparó la adherencia al uso y el conocimiento de MAC en ambos grupos a los 6 meses post parto. El análisis se realizó mediante el software R versión 4.0.3. Resultados : Se incorporaron 39 mujeres en cada grupo. Se halló una diferencia en el uso de MAC entre grupos a los 6 meses (92.3% vs. 64.1%), siendo más eleva do su uso en el GI. Se hallaron diferencias significativas en el conocimiento de algunos MAC a los 6 meses. Un mayor porcentaje de mujeres del GI conocía las pastillas anticonceptivas (p = 0.009), ligadura de trompas (p = 0.04) y la vasectomía (p = 0.010), en comparación con el GC. Discusión : La intervención en el postparto temprano con diversas estrategias de comunicación e información pueden ser útiles para elegir el MAC que se considere más adecuado para cada mujer y su utilización correcta.

Abstract Introduction : Scientific evidence suggests that moth er-child joint care strategies would facilitate knowledge of contraceptive methods (MAC) and their access. The objective was to evaluate the effect of the Integrated Mother and Child Care Model on adherence and knowl edge of CAM in women during the first postpartum semester. Methods : An intervention study was carried out, 2 groups were formed, GI: intervention group (3 controls up to 6 months postpartum) and GC: control group (one control at 6 months postpartum). The intervention con sisted of face-to-face counseling about MAC combined with informative brochures and WhatsApp® messages. Sociodemographic data, gynecological and obstetric history, use and knowledge of contraceptive methods were collected. Adherence to the use and knowledge of MAC were compared in both groups at 6 months post partum. The analysis was performed using R software version 4.0.3. Results : Thirty-nine women were incorporated into each group. A difference was found in the use of MAC between groups at 6 months (92.3% vs. 64.1%), its use being higher in GI. Significant differences were found in the knowledge of some MAC at 6 months. A higher percentage of women in GI knew about birth control pills (p = 0.009), tubal ligation (p = 0.04) and vasectomy (p = 0.010), compared to GC. Discussion : Early postpartum intervention with vari ous communication and information strategies can be useful to choose the MAC that is considered most ap propriate for each woman and its correct use.

Diastolic dysfunction is an independent predictor for cardiovascular events after an acute kidney injury.

BACKGROUND AND AIM: Acute kidney injury (AKI) conditions several short- and long-term complications. The aim of the present study was to analyse the impact of cardiac function and structure in the cardiovascular prognosis after an in-hospital AKI episode. MATERIAL AND METHODS: This is an observational retrospective cohorts study including all in-hospital AKI episodes in 2013 and 2014 in our centre. At baseline, epidemiological values, comorbidities and echocardiography parameters were collected. During a follow-up of 49 ±â€¯28 months, cardiovascular events (CVE) were collected, and associated factors were analysed. RESULTS: 1255 patients were included (55% male, age 75 ±â€¯13 years). Of the 676 (54%) that had a previous echocardiogram, 46% had left ventricular hypertrophy, 38% pulmonary hypertension, 38% diastolic dysfunction and 22% systolic dysfunction. During the follow-up, 484 (39%) developed a CVE. Associated factors to VCE were male sex, age, diabetes mellitus, hypertension, dyslipidemia, coronary heart disease, heart failure, atrial fibrillation, neoplasia and chronic kidney disease (also, glomerular filtration rate at baseline and after the AKI episode). Survival curves demonstrated that all the echocardiographic parameters were associated to CVE. An adjusted Cox regression model showed that age (HR 1.017), diabetes (HR 1.576) and diastolic dysfunction (HR 1.358) were independent predictors for CVE. CONCLUSION: Diastolic dysfunction is an independent predictor for long-term cardiovascular events after an in-hospital acute kidney injury episode.

La disfunción diastólica es un predictor independiente de eventos cardiovasculares tras un fracaso renal agudo / Diastolic dysfunction is an independent predictor for cardiovascular events after an acute kidney injury

Antecedente y objetivo: El desarrollo de un fracaso renal agudo (FRA) condiciona complicaciones a corto, medio y largo plazo. El objetivo de nuestro estudio fue analizar el impacto de las alteraciones cardiacas en el pronóstico cardiovascular de pacientes que presentan un episodio de FRA. Materiales y métodos: Realizamos un estudio observacional de cohortes retrospectivo incluyendo a todos los pacientes con FRA en 2013 y 2014. Basalmente recogimos variables epidemiológicas, comorbilidades y parámetros ecocardiográficos. Seguimos a los pacientes tras el ingreso durante una media de 49 ± 28 meses, recogiendo la incidencia de eventos cardiovasculares (ECV) y los factores asociados a los mismos. Resultados: Se incluyeron 1.255 pacientes (55% varones, edad 75 ± 13 años). De los 676 (54%) pacientes que disponían de un ecocardiograma previo, el 46% tenían hipertrofia de ventrículo izquierdo, el 38% hipertensión pulmonar, el 38% disfunción diastólica y el 22% disfunción sistólica. Tras la hospitalización por FRA, 484 (39%) tuvieron un ECV. Los factores asociados a presentar un ECV fueron el sexo (varón), la edad, diabetes mellitus, hipertensión arterial, dislipidemia, cardiopatía isquémica, insuficiencia cardiaca, fibrilación auricular, neoplasia previa y enfermedad renal crónica (y el filtrado glomerular estimado basal y tras el FRA). El análisis de supervivencia demostró que todos los parámetros ecocardiográficos se asociaban a ECV. Un modelo de regresión de Cox ajustado demostró que la edad (HR 1,017), la diabetes mellitus (HR 1,576) y la disfunción diastólica (HR 1,358) eran predictores independientes de ECV. Conclusiones: La disfunción diastólica es un predictor independiente de ECV a largo plazo tras un episodio hospitalario de FRA. (AU)

Background and aim: Acute kidney injury (AKI) conditions several short- and long-term complications. The aim of the present study was to analyse the impact of cardiac function and structure in the cardiovascular prognosis after an in-hospital AKI episode. Materials and methods: This is an observational retrospective cohorts study including all in-hospital AKI episoes in 2013 and 2014 in our centre. At baseline, epidemiological values, comorbidities and echocardiography parameters were collected. During a follow-up of 49 ± 28 months, cardiovascular events (CVEs) were collected, and associated factors were analysed. Results: 1255 patients were included (55% male, age 75 ± 13 years). Of the 676 (54%) that had a previous echocardiogram, 46% had left ventricular hypertrophy, 38% pulmonary hypertension, 38% diastolic dysfunction and 22% systolic dysfunction. During the follow-up, 484 (39%) developed a CVE. Associated factors to CVE were male sex, age, diabetes mellitus, hypertension, dyslipidemia, coronary heart disease, heart failure, atrial fibrillation, neoplasia and chronic kidney disease (also, glomerular filtration rate at baseline and after the AKI episode). Survival curves demonstrated that all the echocardiographic parameters were associated to CVE. An adjusted Cox regression model showed that age (HR 1.017), diabetes (HR 1.576) and diastolic dysfunction (HR 1.358) were independent predictors for CVE. Conclusion: Diastolic dysfunction is an independent predictor for long-term CVEs after an in-hospital AKI episode. (AU)

Gene Signatures of Symptomatic and Asymptomatic Clinical-Immunological Profiles of Human Infection by Leishmania (L.) chagasi in Amazonian Brazil.

Individuals infected with Leishmania (L.) chagasi may present different asymptomatic and symptomatic stages of infection, which vary in the clinical-immunological profiles that can be classified as asymptomatic infection (AI), subclinical resistant infection (SRI), indeterminate initial infection (III), subclinical oligosymptomatic infection (SOI), and symptomatic infection (SI) (=American visceral leishmaniasis, AVL). However, little is known about the molecular differences between individuals having each profile. Here, we performed whole-blood transcriptomic analyses of 56 infected individuals from Pará State (Brazilian Amazon), covering all five profiles. We then identified the gene signatures of each profile by comparing their transcriptome with those of 11 healthy individuals from the same area. Symptomatic individuals with SI (=AVL) and SOI profiles showed higher transcriptome perturbation when compared to those asymptomatic III, AI and SRI profiles, suggesting that disease severity may be associated with greater transcriptomic changes. Although the expression of many genes was altered on each profile, very few genes were shared among the profiles. This indicated that each profile has a unique gene signature. The innate immune system pathway was strongly activated only in asymptomatic AI and SRI profiles, suggesting the control of infection. In turn, pathways such as MHC Class II antigen presentation and NF-kB activation in B cells seemed to be specifically induced in symptomatic SI (=AVL) and SOI profiles. Moreover, cellular response to starvation was down-regulated in those symptomatic profiles. Overall, this study revealed five distinct transcriptional patterns associated to the clinical-immunological (symptomatic and asymptomatic) profiles of human L. (L.) chagasi-infection in the Brazilian Amazon.

Changes in equine intestinal stem/progenitor cell number at resection margins in cases of small intestinal strangulation.

BACKGROUND: Intestinal epithelial stem cells (ISC) are responsible for epithelial regeneration and are critical to the intestine's ability to regain barrier function following injury. Evaluating ISC biomarker expression in cases of small intestinal strangulation (SIS) may provide insight into clinical progression. OBJECTIVES: Intestinal resection margins from cases of SIS were evaluated to determine if (1) evidence of injury could be identified using histomorphometry, (2) ISC biomarker expression was decreased in the proximal resection margin compared to control and distal resection margin, and (3) the ISC biomarker expression was associated with the number of preoperative risk factors negatively related to outcome, post-operative complications, or case outcome. STUDY DESIGN: Retrospective cohort study. METHODS: Intestinal samples were obtained intraoperatively from resection margins of adult horses with SIS and horses euthanised for reasons unrelated to colic. Preoperative risk factors negatively related to outcome, post-operative complications, and case outcome were obtained from medical records. Horses were grouped as euthanised intraoperatively, postoperatively, or survived to discharge. Histomorphometry and immunofluorescence were performed to evaluate tissue architecture and ISC and progenitor cell number. Groups were compared using one-way ANOVA. Associations between biomarker expression and the number of preoperative risk factors and post-operative complications negatively related to outcome were determined using linear regression modelling. RESULTS: Thirty-six cases of SIS were evaluated. Ki67+ cell counts were decreased in the proximal (mean = 15.45 cells; 95% CI = 10.27-20.63; SD = 4.17; p = 0.02) and distal resection margins (mean = 15.05; 95% CI = 8.46-21.64; SD = 4.141; p = 0.03) in horses euthanised postoperatively compared to control (mean = 23.62 cells; 95% CI = 19.42-27.83; SD = 5.883). In the distal resection margin, an increase in SOX9+ Ki67+ cells were associated with a decrease in the total number of preoperative risk factors negatively related to outcome (95% CI = 0.236-1.123; p = 0.008, SE = 0.1393). MAIN LIMITATIONS: Small population size. CONCLUSIONS: Proliferating cell and ISC numbers may be associated with case outcome.

Humoral response after the fourth dose of the SARS-CoV-2 vaccine in the CKD spectrum: a prespecified analysis of the SENCOVAC study.

BACKGROUND: There is scarce evidence on the fourth dose of severe acute respiratory syndrome coronavirus 2 vaccines in chronic kidney disease (CKD) patients. We evaluated the humoral response and effectivity of the fourth dose in the CKD spectrum: non-dialysis CKD (ND-CKD), haemodialysis (HD), peritoneal dialysis (PD) and kidney transplant (KT) recipients. METHODS: This is a prespecified analysis of the prospective, observational, multicentric SENCOVAC study. In patients with CKD who had received a complete initial vaccination and one or two boosters and had anti-Spike antibody determinations 6 and 12 months after the initial vaccination, we analysed factors associated with persistent negative humoral response and higher anti-Spike antibody titres as well as the efficacy of vaccination on coronavirus disease 2019 (COVID-19) severity. RESULTS: Of 2186 patients (18% KT, 8% PD, 69% HD and 5% ND-CKD), 30% had received a fourth dose. The fourth dose increased anti-Spike antibody titres in HD (P = .001) and ND-CKD (P = .014) patients and seroconverted 72% of previously negative patients. Higher anti-Spike antibody titres at 12 months were independently associated with repeated exposure to antigen (fourth dose, previous breakthrough infections), previous anti-Spike antibody titres and not being a KT recipient. Breakthrough COVID-19 was registered in 137 (6%) patients, 5% of whom required admission. Admitted patients had prior titres <620 UI/ml and median values were lower (P = .020) than in non-admitted patients. CONCLUSIONS: A fourth vaccine dose increased anti-Spike antibody titres or seroconverted many CKD patients, but those with the highest need for a vaccine booster (i.e. those with lower pre-booster antibody titres or KT recipients) derived the least benefit in terms of antibody titres. Admission for breakthrough COVID-19 was associated with low anti-Spike antibody titres.

Hypertension arising after 20 weeks of gestation: gestational hypertension or masked chronic hypertension?

The objectives of this study were 1-to evaluate the prevalence of masked chronic hypertension in pregnant women classified as gestational hypertension 2-to compare the risks of developing preeclampsia in true gestational hypertension vs those women classified as having gestational hypertension but who had had masked hypertension in the first half of pregnancy. We conducted a cohort study in consecutive high-risk pregnancies who were evaluated before 20 weeks of gestation. Women who developed gestational hypertension (normotension in the office before 20 weeks of gestation and office BP ≥ 140/90 mmHg and/or antihypertensive treatment in the second half of gestation) were divided, according to an ABPM performed before 20 weeks of pregnancy, in two subgroups: subgroup 1-if their ABPM was normal, and subgroup 2-if they had masked chronic hypertension. Risks for preeclampsia (PE) were estimated and compared with normotensive women. Before 20 weeks of gestation, 227 women were evaluated (age 32 ± 6 years, median gestation age 15 weeks); 67 had chronic hypertension (29.5%). Of the remaining 160, 39 developed gestational hypertension (16 in subgroup 1 and 23 insubgroup 2. Compared with normotensive pregnant women, subgroup 1 of women with gestational hypertension did not increase the risk of developing PE (OR = 0.76, 95% CI = 0.16-6.65). Conversely, subgroup 2 of gestational hypertension increased the risk of PE more than 4 times (0R = 4.47 CI = 1.16-12.63). Risk estimation did not change substantially after the adjustment for multiple possible confounders. In conclusion, the59% of women initially diagnosed as gestational hypertensive according to current recommendations had masked chronic hypertension and a very high risk of developing PE.

Análisis de tesis médicas de pregrado en una universidad de Perú, 2011-2020: publicación en revistas indizadas y factores asociados / Analysis of undergraduate medical theses at a Peruvian university, 2011-2020: publication in indexed journals and associated factors

Los factores cuantitativos asociados a la publicación de tesis médicas en el pregrado no han sido lo suficientemente estudiados. Por ello, la investigación describió las tasas de publicación, así como la asociación con las características de las tesis, del asesor y del tesista. Se accedió, de manera virtual, a las tesis médicas de pregrado de la Universidad Nacional de San Agustín de Arequipa, Perú, durante el período 2011-2020. Mediante el análisis de regresión logística múltiple, se evaluó la asociación entre la publicación de la tesis en revistas indizadas (Scopus) y la experiencia previa en publicación en revistas indizadas en Scopus del asesor y del tesista, la unidad de análisis, el tamaño de muestra, diseño de estudio, número de páginas, aprobación por el comité de ética de investigación y el sexo del tesista. De 884 tesis solo 12 (1,5 por ciento) se publicaron; lo que constituye el 1,23 por ciento de las tesis publicadas anualmente, con tendencia constante. La experiencia previa en publicación del asesor se asoció con la colocación de las tesis en revistas indizadas (OR = 8,97 [1,70-42,98]; p = 0,005) y en revistas indizadas a Scopus (OR = 14,64 [1,24-336,11]; p = 0,037). Presentar la aprobación del comité de ética de la institución se asoció con publicar la tesis en revistas indizadas a Scopus (OR = 12,45 [1,06-285,94]; p = 0,050). La publicación de tesis médicas de pregrado en esta universidad es baja y constante. Se asoció con tener un asesor de tesis con experiencia previa en publicaciones en revistas indizadas a Scopus y a tener aprobación por comité de ética. Urge implementar estrategias para aumentar la publicación de tesis(AU)

Quantitative factors associated with the publication of undergraduate medical theses have not been sufficiently studied. Therefore, the research described publication rates, as well as the association with thesis, advisor, and thesis writer characteristics. Undergraduate medical theses from the Universidad Nacional de San Agustín de Arequipa, Peru, during the period 2011-2020 were accessed virtually. Multiple logistic regression analysis was used to evaluate the association between thesis publication in indexed journals (Scopus) and the previous publication experience in indexed journals in Scopus of the advisor and the thesis author, the unit of analysis, sample size, study design, number of pages, approval by the research ethics committee and the gender of the thesis author. Out of 884 theses only 12 (1.5percent) were published; this constitutes 1.23percent of the theses published annually, with a constant trend. The previous publication experience of the advisor was associated with the placement of theses in indexed journals (OR = 8.97 [1.70-42.98]; p = 0.005) and in journals indexed to Scopus (OR = 14.64 [1.24-336.11]; p = 0.037). Presenting the approval of the institution's ethics committee was associated with publishing the thesis in journals indexed to Scopus (OR = 12.45 [1.06-285.94]; p = 0.050). Publication of undergraduate medical theses at this university is low and consistent. It was associated with having a thesis advisor with previous experience in publishing in Scopus-indexed journals and having approval by an ethics committee. There is an urgent need to implement strategies to increase thesis publication(AU)