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INTRODUCTION: This study sought to explore the meaning of the recovery process and its stages from the perspective of people attending a mental health day hospital. METHODS: A descriptive exploratory qualitative study was carried out. Semi-structured interviews were conducted with people attending a mental health day hospital. The data were analysed deductively by means of content analysis. RESULTS: The participants described the recovery process as a process based on three pillars; the attitude towards recovery, hardship, and the effort required throughout the process. Regarding the stages of recovery, for the participants in the first stage of the process (Moratorium), the search for hope was the most important element. In the second stage (Awareness), the reestablishment of their identity, through the acceptance of the consequences derived from the mental health problem, together with being able to feel full and fulfilled, were the most outstanding elements. In the third stage (Preparation), participants highlighted the search for meaning in life, facing their fears and the process with an open mind. Finally, the last two stages (Rebuilding and Growth) were related to taking responsibility and empowerment for recovery. CONCLUSIONS: The results of this study provide insight into the perception of the recovery process and its stages in people attending a mental health day hospital. These findings may contribute to aligning the nurse-patient perspective, helping nurses to understand the key elements of patients according to their stage of recovery, and thus be able to subsequently individualise interventions. PATIENT AND PUBLIC CONTRIBUTION: This study was based on interviews with 15 patients receiving treatment at an adult mental health day hospital. This study would not have been possible without their participation.
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Entrevistas como Asunto , Trastornos Mentales , Investigación Cualitativa , Humanos , Masculino , Femenino , Adulto , Trastornos Mentales/psicología , Trastornos Mentales/terapia , Persona de Mediana Edad , Hospitales PsiquiátricosRESUMEN
OBJECTIVE: This study examines the impact of the COVID-19 pandemic on both routine and non-routine vaccinations in infants during their initial 18 months of life, concurrently exploring the complex influence of sociodemographic factors. METHODS: A cohort study was conducted, involving 2007 children in two distinct periods: pre-pandemic (January-June 2018) and pandemic (March 2020-May 2021). Participants were classified into two cohorts: 962 children in the 2018 group and 1045 children in the 2020-21 group. Utilizing unconditional logistic regression, the association between vaccination (complete or non-routine) and socioeconomic factors was examined, with adjustments for potential confounding variables such as age, breastfeeding, gestational age, and twins. RESULTS: The study's analysis reveals that in the post-pandemic period, mothers were three times more likely to opt for non-routine vaccines (95% CI 2.25-4.23). However, no significant alterations were observed in routine vaccination rates. Protective factors for complete vaccination included having an employed mother, higher education, and a medium-to-high income. Conversely, a higher income was associated with a reduced likelihood of complete vaccination (OR 0.34, 95% CI 0.20-0.59). CONCLUSION: Contrary to initial expectations, this study concludes that the COVID-19 pandemic did not have a substantial impact on childhood complete vaccination rates. Nevertheless, a noticeable increase in the choice of non-routine vaccination was observed. Sociodemographic factors, such as maternal education, income, and employment status, emerged as key influencers, particularly in the context of deciding on non-routine vaccinations.
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BACKGROUND: The COVID-19 pandemic changed the healthcare system, leading to the rapid evolution and implementation of telemedicine (TM). TM has the potential to improve the quality of primary health care and increase accessibility for the population. However, its use may represent challenges for older people, as they may have distinct needs from the general population due to age-related changes in perceptual, motor, and cognitive capacities. We, thus, aimed to identify potential facilitators and barriers to TM use in primary care for older adults and develop recommendations accordingly. METHODS: We conducted a qualitative study to explore the challenges associated with TM use among older adults and healthcare professionals (HCPs) in primary care practice. Interviews were conducted with 29 older adults, and three focus groups involving HCPs from four McGill family medicine sites were organized. Employing a hybrid codebook thematic analysis, guided by the Consolidated Framework for Implementation Research (CFIR), we identified facilitators and barriers affecting the optimal use of TM by older adults and HCPs. We synthesized the results from semi-structured interviews and focus groups. These findings were then presented during a deliberative dialogue with eight participants, including family physicians, nurses, a social worker, and a government-level TM expert, to validate our results. The purpose was to gather feedback, identify and refine actionable recommendations. Subsequently, we utilized a thematic analysis using the same codebook to synthesize findings from the deliberative dialogue. RESULTS: Participants agreed that TM contributed to maintaining the continuity of care and was particularly convenient when there was an existing or established patient-physician relationship or for addressing minor health issues. TM was found to be beneficial for people with limited mobility, reducing their exposure to potentially high-risk environments. However, participants expressed concerns about the lack of visual contact, causing essential details to be overlooked. Additionally, issues related to miscommunication due to language or hearing barriers were identified. HCPs perceived that most older adults did not consider phone consultations a medical act. Participants were open to a hybrid approach, combining in-person consultations and TM, based on their specific health conditions. Building upon these results, we formulated seven key recommendations. CONCLUSIONS: Both older adults and HCPs consider TM a good alternative for accessing healthcare services. To improve the effective use of TM, it's crucial to advocate for a hybrid approach that integrates both in-person and virtual methods. This approach should actively encourage and support individuals in becoming familiar with technological tools.
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COVID-19 , Grupos Focales , Atención Primaria de Salud , Investigación Cualitativa , Telemedicina , Humanos , Anciano , COVID-19/epidemiología , Femenino , Masculino , SARS-CoV-2 , Anciano de 80 o más Años , Pandemias , Entrevistas como AsuntoRESUMEN
BACKGROUND: Smoking and unhealthy diet are important risk factors for cardiovascular and metabolic diseases, contributing to public health crises. OBJECTIVE: To evaluate the consumption of natural/minimally processed and ultra-processed foods by Brazilian adults (18-59 years old) according to smoking status. DESIGN AND SETTING: Cross-sectional study of a representative population sample from 26 state capitals and the Federal District (Brazil-2018). METHODS: Data were obtained from Vigitel-Surveillance System for Risk and Protection Factors for Chronic Diseases by Telephone Survey. Participants were categorized as smokers, ex-smokers, and never smokers. Multinomial logistic regression was used for analyses. RESULTS: Of the 30,800 adults evaluated, 9.4% (95%CI: 8.7-10.2) were smokers and 16.5% (95%CI: 15.8-17.3) were ex-smokers. Smokers were less likely to consume fruit and natural juice, and more likely to consume soda or artificial juice (≥ 5 days/week) than ex-smokers and never smokers. Regarding the daily frequency of consumption, smokers were observed to be less likely to eat fruit more than 1 time/day and more likely to drink ≥ 3 cups/cans of soda/day. Compared to never smokers, smokers had a 42% higher chance of consuming ≥ 3 glasses of natural juice/day. On the day before the interview, fruit, milk, tubers, squash, and okra consumption were lower among smokers than non-smokers. Smokers were more likely to report consuming soft drinks, fruit juice, sauces, ready-made dishes, margarine, and sausages. CONCLUSION: Smokers had lower fruit consumption, and higher consumption of natural juices and ultra-processed foods. We highlight the need for strategies that encourage healthy eating and smoking cessation.
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Alimentos Procesados , Fumar , Adolescente , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Brasil/epidemiología , Estudios Transversales , Factores de Riesgo , Fumar/epidemiología , Factores Socioeconómicos , DietaRESUMEN
The introduction of closed-loop systems in the pediatric population has been a revolution in the management and evolution of diabetes. However, there are not many published studies in situations in which the feeding, schedules, and activities of the children deviate from the routine for which the systems were programmed, as in the case of a summer camp for children and adolescents with diabetes, where the specific programming of this device is not well known. It was a single-center prospective preliminary study. A total of twenty-seven patients (mean age 11.9 ± 1.9 years, 40% male, duration of diabetes 6.44 ± 2.83 years) were included (twenty with Medtronic MiniMed 780G system and seven with Tandem Control-IQ). Glucometric variables and pump functionality were monitored during the 7-day camp and in the following 3 weeks. There was no decrease from the objective TIR 70% at any moment. The worst results in Time Below Range were at 72 h from starting the camp, and the worst results in Time Above Range were in the first 24 h, with a progressive improvement after that. No episodes of level 3 hypoglycemia or ketoacidosis occurred. The use of specific programming in two integrated systems, with complex blood glucose regulation algorithms and not-prepared-for situations with increased levels of physical activity or abrupt changes in feeding routines, did not result in an increased risk of level 3 hypoglycemia and ketoacidosis for our pediatric type 1 diabetes (T1D) patients, regardless of the closed-loop device.
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Glucemia , Diabetes Mellitus Tipo 1 , Sistemas de Infusión de Insulina , Insulina , Humanos , Niño , Masculino , Adolescente , Femenino , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Diabetes Mellitus Tipo 1/sangre , Estudios Prospectivos , Insulina/administración & dosificación , Automonitorización de la Glucosa Sanguínea/instrumentación , Hipoglucemiantes/administración & dosificación , Acampada , Control Glucémico/métodos , Algoritmos , Hipoglucemia/prevención & controlRESUMEN
Despite the development of novel therapies for acute myeloid leukemia, outcomes remain poor for most patients, and therapeutic improvements are an urgent unmet need. Although treatment regimens promoting differentiation have succeeded in the treatment of acute promyelocytic leukemia, their role in other acute myeloid leukemia subtypes needs to be explored. Here we identify and characterize two lysine deacetylase inhibitors, CM-444 and CM-1758, exhibiting the capacity to promote myeloid differentiation in all acute myeloid leukemia subtypes at low non-cytotoxic doses, unlike other commercial histone deacetylase inhibitors. Analyzing the acetylome after CM-444 and CM-1758 treatment reveals modulation of non-histone proteins involved in the enhancer-promoter chromatin regulatory complex, including bromodomain proteins. This acetylation is essential for enhancing the expression of key transcription factors directly involved in the differentiation therapy induced by CM-444/CM-1758 in acute myeloid leukemia. In summary, these compounds may represent effective differentiation-based therapeutic agents across acute myeloid leukemia subtypes with a potential mechanism for the treatment of acute myeloid leukemia.
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Diferenciación Celular , Epigénesis Genética , Inhibidores de Histona Desacetilasas , Leucemia Mieloide Aguda , Humanos , Diferenciación Celular/efectos de los fármacos , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/tratamiento farmacológico , Leucemia Mieloide Aguda/metabolismo , Epigénesis Genética/efectos de los fármacos , Inhibidores de Histona Desacetilasas/farmacología , Inhibidores de Histona Desacetilasas/uso terapéutico , Línea Celular Tumoral , Acetilación/efectos de los fármacos , Factores de Transcripción/metabolismo , Factores de Transcripción/genética , Regulación Leucémica de la Expresión Génica/efectos de los fármacos , AnimalesRESUMEN
BACKGROUND: The recurrence of weight gain is attributed to the homeostatic regulation of hunger and satiety signals, influenced by metabolic state, nutrient availability, and non-homeostatic mechanisms shaped by reinforced consequences from experiences. In response, Evelyn Tribole and Elyse Resch proposed Intuitive Eating (IE) in 1980, countering restrictive diets. IE, inversely correlated with Body Mass Index (BMI), binge eating, and anxiety/depression symptoms, fosters mind-body-food harmony by recognizing hunger and satiety cues. IE encourages meeting physiological, not emotional, needs, permitting unconditional eating, and relying on internal signals for food decisions. Amidst university students' stress, exacerbated during the COVID-19 pandemic, understanding their eating behavior, particularly intuitive eating levels, becomes crucial. OBJECTIVE: This study aimed to assess the IE level of Brazilian students during the COVID-19 pandemic. METHODS: This cross-sectional study, the first to analyze the Intuitive Eating of students in Brazil during the pandemic, was conducted using an online questionnaire. RESULTS: The sample comprised 1335 students, most of whom were women (82.17%), with a mean age of 26.12 ± 7.9 years, and a healthy nutritional status (57.58%). The mean IE score was 3.2 ± 0.6. A significant association was found between the confinement situation, the type of housing unit, and the IE subscale-Unconditional Permission to Eat (p = 0.043). However, there was no association between the other subscales and the total IE scale. Regarding self-reported mental and eating disorders, the most frequent were anxiety (21.2%), depression (6.5%), and binge eating disorder (BED) (4.7%). IE was negatively associated with BED (B = - 0.66; p < .001), bulimia nervosa (B = - 0.58; p < .001), body mass index (BMI) (p < .001) and self-reported anxiety (B = - .102; p = 0.16). The male sex showed a higher IE score compared with the female sex (p < .001). CONCLUSION: While no significant association was found between IE and the confinement situation, a significant association was found between housing type and the Unconditional Permission to Eat subscale.
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Metals can be adsorbed on particulate matter, settle in sediments and cause alterations in aquatic environments. This study assesses the effect of Ag and/or Cd, both in ionic and nanoparticle (NP) forms, on the microbiome of sediments. For that purpose, aquatic controlled-microcosm experiments were exposed to an environmentally relevant and at tenfold higher doses of each form of the metals. Changes in the bacteriome were inferred by 16S rDNA sequencing. Ionic Ag caused a significant decrease of several bacterial families, whereas the effect was opposite when mixed with Cd, e.g., Desulfuromonadaceae family; in both cases, the bacteriome functionalities were greatly affected, particularly the nitrogen and sulfur metabolism. Compared to ionic forms, metallic NPs produced hardly any change in the abundance of microbial families, although the α-biodiversity of the bacteriome was reduced, and the functionality altered, when exposed to the NPs´ mixture. Our goal is to understand how metals, in different forms and combinations, released into the environment may endanger the health of aquatic ecosystems. This work may help to understand how aquatic metal pollution alters the structure and functionality of the microbiome and biogeochemical cycles, and how these changes can be addressed.
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Cadmio , Sedimentos Geológicos , Nanopartículas del Metal , Microbiota , Plata , Contaminantes Químicos del Agua , Plata/toxicidad , Sedimentos Geológicos/química , Sedimentos Geológicos/microbiología , Contaminantes Químicos del Agua/análisis , Cadmio/análisis , Microbiota/efectos de los fármacos , Nanopartículas del Metal/toxicidad , Bacterias , Iones , ARN Ribosómico 16S , BiodiversidadRESUMEN
(1) Background: This study assessed the efficacy of hydroxychloride sources of zinc (Zn), manganese (Mn), and copper (Cu) compared with organic sources in the rearing diets of Lohmann brown pullets, focusing on pullet performance, tibia quality, egg production, and eggshell quality. (2) Methods: A total of 120 birds (six replications and 10 birds each) received diets with Mn, Zn, and Cu from organic or hydroxychloride sources during the rearing phase. After the onset of lay, birds were fed diets containing oxide/sulfate sources up to 50 weeks of age. (3) Results: no significant differences were observed in growth performance and tibia quality during the rearing phase (p > 0.05). From 18 to 24 weeks of age, no carryover effect on egg production performance was observed. However, from 25-50 weeks, pullets fed hydroxychloride sources showed lower feed intake and egg mass compared to the organic group (p < 0.05), whereas egg production and eggshell quality remained similar between groups (p > 0.05). (4) Conclusions: These findings suggest the potential of hydroxychloride sources in rearing diets without compromising overall growth in the pullet phase and feed efficiency in the laying cycle.
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Intravascular devices are essential for the diagnostic and therapeutic approach to multiple diseases in paediatrics, and central venous catheters (CVCs) are especially important. One of the most frequent complications is the infection of these devices, which is associated with a high morbidity and mortality. These infections are highly complex, requiring the use of substantial resources, both for their diagnosis and treatment, and affect vulnerable paediatric patients admitted to high-complexity units more frequently. There is less evidence on their management in paediatric patients compared to adults, and no consensus documents on the subject have been published in Spain. The objective of this document, developed jointly by the Spanish Society of Paediatric Infectious Diseases (SEIP) and the Spanish Society of Paediatric Intensive Care (SECIP), is to provide consensus recommendations based on the greatest degree of evidence available to optimize the diagnosis and treatment of catheter-related bloodstream infections (CRBSIs). This document focuses on non-neonatal paediatric patients with CRBSIs and does not address the prevention of these infections.
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Infecciones Relacionadas con Catéteres , Humanos , Infecciones Relacionadas con Catéteres/diagnóstico , Infecciones Relacionadas con Catéteres/prevención & control , Infecciones Relacionadas con Catéteres/terapia , Niño , Catéteres Venosos Centrales/efectos adversos , Cateterismo Venoso Central/efectos adversos , EspañaRESUMEN
Objective: Although individuals with a family history of alcohol use disorder (AUD) have a superior antidepressant response to ketamine, outcomes in patients with current AUD remain unclear. This study sought to investigate whether intranasal (IN) racemic (R,S)-ketamine had antisuicidal and antidepressant effects in unipolar and bipolar depression and whether comorbid AUD conferred superior antisuicidal outcomes for patients.Methods: This was a double-blind, randomized, placebo-controlled trial (May 2018 to January 2022) of single administration, fixed-dose (50 mg) IN (R,S)-ketamine (or saline comparator) in unmedicated inpatients meeting Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision, criteria for a current major depressive episode (bipolar or unipolar), with current suicidal ideation (SI) and past attempt. Patients with and without comorbid AUD were enrolled. Change in Scale for Suicide Ideation score was the primary outcome measure, and change in Montgomery-Åsberg Depression Rating Scale score was the secondary outcome measure.Results: No significant group × time effect was noted for SI (F = 1.1, P = .36). A statistical trend toward superior improvement in suicidality was observed in participants with comorbid AUD. The group × time interaction was significant for improvements in depression (F = 3.06, P = .03) and largely unaffected by comorbid AUD or primary mood disorder type. Within the ketamine group, a significant correlation was observed between improvement in depressive symptoms and SI for patients without comorbid AUD (r =0.927, P = .023) that was absent in patients with AUD (r = 0.39, P = .44).Conclusion: IN ketamine induced rapid antidepressant effects compared to placebo but did not significantly alter SI scores. The treatment was well tolerated. Continued investigation with IN ketamine as a practical alternative to current formulations is warranted.Trial Registration: ClinicalTrials.gov identifier: NCT03539887.
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Administración Intranasal , Alcoholismo , Antidepresivos , Trastorno Bipolar , Trastorno Depresivo Mayor , Ketamina , Ideación Suicida , Humanos , Ketamina/administración & dosificación , Ketamina/farmacología , Método Doble Ciego , Masculino , Femenino , Trastorno Bipolar/tratamiento farmacológico , Trastorno Bipolar/complicaciones , Adulto , Proyectos Piloto , Antidepresivos/administración & dosificación , Antidepresivos/uso terapéutico , Trastorno Depresivo Mayor/tratamiento farmacológico , Alcoholismo/tratamiento farmacológico , Persona de Mediana Edad , Comorbilidad , Resultado del TratamientoRESUMEN
Aims: Rotator cuff (RC) injuries are characterized by tendon rupture, muscle atrophy, retraction, and fatty infiltration, which increase injury severity and jeopardize adequate tendon repair. Epigenetic drugs, such as histone deacetylase inhibitors (HDACis), possess the capacity to redefine the molecular signature of cells, and they may have the potential to inhibit the transformation of the fibro-adipogenic progenitors (FAPs) within the skeletal muscle into adipocyte-like cells, concurrently enhancing the myogenic potential of the satellite cells. Methods: HDACis were added to FAPs and satellite cell cultures isolated from mice. The HDACi vorinostat was additionally administered into a RC injury animal model. Histological analysis was carried out on the isolated supra- and infraspinatus muscles to assess vorinostat anti-muscle degeneration potential. Results: Vorinostat, a HDACi compound, blocked the adipogenic transformation of muscle-associated FAPs in culture, promoting myogenic progression of the satellite cells. Furthermore, it protected muscle from degeneration after acute RC in mice in the earlier muscle degenerative stage after tenotomy. Conclusion: The HDACi vorinostat may be a candidate to prevent early muscular degeneration after RC injury.
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Obesity leads to insulin resistance (IR) and type 2 diabetes. In humans, low levels of the hormone prolactin (PRL) correlate with IR, adipose tissue (AT) dysfunction, and increased prevalence of T2D. In obese rats, PRL treatment promotes insulin sensitivity and reduces visceral AT adipocyte hypertrophy. Here, we tested whether elevating PRL levels with the prokinetic and antipsychotic drug sulpiride, an antagonist of dopamine D2 receptors, improves metabolism in high fat diet (HFD)-induced obese male mice. Sulpiride treatment (30 days) reduced hyperglycemia, IR, and the serum and pancreatic levels of triglycerides in obese mice, reduced visceral and subcutaneous AT adipocyte hypertrophy, normalized markers of visceral AT function (PRL receptor, Glut4, insulin receptor and Hif-1α), and increased glycogen stores in skeletal muscle. However, the effects of sulpiride reducing hyperglycemia were also observed in obese prolactin receptor null mice. We conclude that sulpiride reduces obesity-induced hyperglycemia by mechanisms that are independent of prolactin/prolactin receptor activity. These findings support the therapeutic potential of sulpiride against metabolic dysfunction in obesity.
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Diabetes Mellitus Tipo 2 , Hiperglucemia , Resistencia a la Insulina , Humanos , Ratones , Masculino , Ratas , Animales , Ratones Obesos , Antagonistas de los Receptores de Dopamina D2 , Prolactina , Receptores de Prolactina , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Sulpirida/farmacología , Sulpirida/uso terapéutico , Obesidad/tratamiento farmacológico , Obesidad/etiología , Dieta Alta en Grasa/efectos adversos , Hiperglucemia/tratamiento farmacológico , Hipertrofia , Insulina/metabolismoRESUMEN
Many studies have shown that patients with autoimmune disease present a hypoactive hypothalamic-pituitary-adrenal (HPA) axis, but the results are controversial. Our objective was to study differences in stress response axis activity between patients with autoimmune disease and healthy people. The study sample consisted of 97 women divided into four groups: 37 healthy women (HW), 21 with systemic lupus erythematosus (SLE), 21 with Sjögren's syndrome (SS), and 18 with systemic sclerosis (SSc). After being exposed to a stress task, participants' skin conductance and salivary cortisol levels were measured in order to assess their response to psychological stress. Diurnal cortisol concentrations were assessed by measuring salivary cortisol in samples collected five times over one day. In addition, self-administered questionnaires were used to assess psychological variables. A time × group interaction effect was found (p = 0.003) in salivary cortisol secretion in response to stressful challenge. The healthy group presented normal activation, the SS and SLE groups showed no activation, and the SSc group presented a similar activation pattern to the HW group, except at the time of recovery. Total cortisol production (AUCg) was higher in the SSc group than in the HW group (p = 0.001). Differences were also observed in the cortisol AUCg collected over one day between healthy women and patients with SLE (p = 0.004) as well as with SSc (p = 0.001): women with SLE and SSc presented higher total hormone production than healthy women. Patients with autoimmune disease present a different HPA axis response, which may contribute to the harmful effects of stress in these diseases.
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Hidrocortisona , Sistema Hipotálamo-Hipofisario , Lupus Eritematoso Sistémico , Sistema Hipófiso-Suprarrenal , Saliva , Esclerodermia Sistémica , Estrés Psicológico , Humanos , Femenino , Hidrocortisona/metabolismo , Hidrocortisona/análisis , Adulto , Estrés Psicológico/metabolismo , Estrés Psicológico/fisiopatología , Saliva/química , Persona de Mediana Edad , Sistema Hipotálamo-Hipofisario/metabolismo , Sistema Hipotálamo-Hipofisario/fisiopatología , Lupus Eritematoso Sistémico/psicología , Lupus Eritematoso Sistémico/metabolismo , Lupus Eritematoso Sistémico/fisiopatología , Sistema Hipófiso-Suprarrenal/fisiopatología , Sistema Hipófiso-Suprarrenal/metabolismo , Esclerodermia Sistémica/metabolismo , Esclerodermia Sistémica/fisiopatología , Síndrome de Sjögren/fisiopatología , Síndrome de Sjögren/metabolismo , Síndrome de Sjögren/psicología , Enfermedades Autoinmunes/metabolismo , Enfermedades Autoinmunes/fisiopatología , Enfermedades Autoinmunes/psicología , Respuesta Galvánica de la Piel/fisiologíaRESUMEN
Allelochemicals represent a class of natural products released by plants as root, leaf, and fruit exudates that interfere with the growth and survival of neighboring plants. Understanding how allelochemicals function to regulate plant responses may provide valuable new approaches to better control plant function. One such allelochemical, Myrigalone A (MyA) produced by Myrica gale, inhibits seed germination and seedling growth through an unknown mechanism. Here, we investigate MyA using the tractable model Dictyostelium discoideum and reveal that its activity depends on the conserved homolog of the plant ethylene synthesis protein 1-aminocyclopropane-1-carboxylic acid oxidase (ACO). Furthermore, in silico modeling predicts the direct binding of MyA to ACO within the catalytic pocket. In D. discoideum, ablation of ACO mimics the MyA-dependent developmental delay, which is partially restored by exogenous ethylene, and MyA reduces ethylene production. In Arabidopsis thaliana, MyA treatment delays seed germination, and this effect is rescued by exogenous ethylene. It also mimics the effect of established ACO inhibitors on root and hypocotyl extension, blocks ethylene-dependent root hair production, and reduces ethylene production. Finally, in silico binding analyses identify a range of highly potent ethylene inhibitors that block ethylene-dependent response and reduce ethylene production in Arabidopsis. Thus, we demonstrate a molecular mechanism by which the allelochemical MyA reduces ethylene biosynthesis and identify a range of ultrapotent inhibitors of ethylene-regulated responses.
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Arabidopsis , Etilenos , Feromonas , Etilenos/biosíntesis , Etilenos/metabolismo , Feromonas/farmacología , Feromonas/metabolismo , Arabidopsis/genética , Arabidopsis/metabolismo , Arabidopsis/efectos de los fármacos , Germinación/efectos de los fármacosRESUMEN
Hydroxylated monoterpenes (HMTPs) are differentially emitted by tomato (Solanum lycopersicum) plants resisting bacterial infection. We have studied the defensive role of these volatiles in the tomato response to bacteria, whose main entrance is through stomatal apertures. Treatments with some HMTPs resulted in stomatal closure and pathogenesis-related protein 1 (PR1) induction. Particularly, α-terpineol induced stomatal closure in a salicylic acid (SA) and abscisic acid-independent manner and conferred resistance to bacteria. Interestingly, transgenic tomato plants overexpressing or silencing the monoterpene synthase MTS1, which displayed alterations in the emission of HMTPs, exhibited changes in the stomatal aperture but not in plant resistance. Measures of both 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate (MEcPP) and SA levels revealed competition for MEcPP by the methylerythritol phosphate (MEP) pathway and SA biosynthesis activation, thus explaining the absence of resistance in transgenic plants. These results were confirmed by chemical inhibition of the MEP pathway, which alters MEcPP levels. Treatments with benzothiadiazole (BTH), a SA functional analog, conferred enhanced resistance to transgenic tomato plants overexpressing MTS1. Additionally, these MTS1 overexpressors induced PR1 gene expression and stomatal closure in neighboring plants. Our results confirm the role of HMTPs in both intra- and interplant immune signaling and reveal a metabolic crosstalk between the MEP and SA pathways in tomato plants.
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Monoterpenos , Enfermedades de las Plantas , Estomas de Plantas , Plantas Modificadas Genéticamente , Ácido Salicílico , Solanum lycopersicum , Solanum lycopersicum/microbiología , Solanum lycopersicum/genética , Solanum lycopersicum/metabolismo , Ácido Salicílico/metabolismo , Monoterpenos/metabolismo , Enfermedades de las Plantas/microbiología , Enfermedades de las Plantas/inmunología , Estomas de Plantas/fisiología , Estomas de Plantas/efectos de los fármacos , Hidroxilación , Tiadiazoles/farmacología , Regulación de la Expresión Génica de las Plantas , Fosfatos de Azúcar/metabolismo , Proteínas de Plantas/metabolismo , Proteínas de Plantas/genética , Pseudomonas syringae/patogenicidad , Pseudomonas syringae/fisiología , Eritritol/análogos & derivados , Eritritol/metabolismo , Resistencia a la Enfermedad/genética , Resistencia a la Enfermedad/efectos de los fármacosRESUMEN
Consumer demand for natural, chemical-free products has grown. Food industry residues, like coffee pulp, rich in caffeine, chlorogenic acid and phenolic compounds, offer potential for pharmaceutical and cosmetic applications due to their antioxidant, anti-inflammatory, and antibacterial properties. Therefore, the objective of this work was to develop a phytocosmetic only with natural products containing coffee pulp extract as active pharmaceutical ingredient with antioxidant, antimicrobial and healing activity. Eight samples from Coffea arabica and Coffea canephora Pierre were analyzed for caffeine, chlorogenic acid, phenolic compounds, tannins, flavonoids, cytotoxicity, antibacterial activity, and healing potential. The Robusta IAC-extract had the greatest prominence with 192.92 µg/mL of chlorogenic acid, 58.98 ± 2.88 mg GAE/g sample in the FRAP test, 79.53 ± 5.61 mg GAE/g sample in the test of total phenolics, was not cytotoxic, and MIC 3 mg/mL against Staphylococcus aureus. This extract was incorporated into a stable formulation and preferred by 88% of volunteers. At last, a scratch assay exhibited the formulation promoted cell migration after 24 h, therefore, increased scratch retraction. In this way, it was possible to develop a phytocosmetic with the coffee pulp that showed desirable antioxidant, antimicrobial and healing properties.
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Antioxidantes , Coffea , Humanos , Antioxidantes/farmacología , Antioxidantes/química , Cafeína/farmacología , Cafeína/química , Ácido Clorogénico/farmacología , Ácido Clorogénico/química , Extractos Vegetales/farmacología , Extractos Vegetales/química , Fenoles/farmacología , Antibacterianos/farmacología , Coffea/químicaRESUMEN
BACKGROUND: The widespread adoption of mobile devices by adolescents underscores the potential to harness these tools to instill healthy habits into their daily lives. An exemplary manifestation of this initiative is the Healthy Jeart app, crafted with the explicit goal of fostering well-being. METHODOLOGY: This study, framed within an applied investigation, adopts an exploratory and descriptive approach, specifically delving into the realm of user experience analysis. The focus of this research is a preliminary examination aimed at understanding users' perceived usability of the application. To glean insights, a comprehensive questionnaire was administered to 101 teenagers, seeking their evaluations on various usability attributes. The study took place during 2022. RESULTS: The findings reveal a considerable consensus among users regarding the evaluated usability aspects. However, the areas for improvement predominantly revolve around managing the information density, particularly for a subset of end users grappling with overwhelming content. Additionally, recommendations are put forth to streamline the confirmation process for user suggestions and comments. CONCLUSION: This analysis illuminates both the strengths of the app and areas ripe for refinement, paving the way for a more user-centric and efficacious Healthy Jeart application.
RESUMEN
The monoclonal antibody nirsevimab was at least 70% effective in preventing hospitalisations in infants with lower respiratory tract infections (LRTI) positive for respiratory syncytial virus (RSV) in Spain (Oct 2023-Jan 2024), where a universal immunisation programme began late September (coverage range: 79-99%). High protection was confirmed by two methodological designs (screening and test-negative) in a multicentre active surveillance in nine hospitals in three regions. No protection against RSV-negative LRTI-hospitalisations was shown. These interim results could guide public-health decision-making.