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1.
Pediatr Dermatol ; 2024 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-39258307

RESUMEN

5q14.3 microdeletion syndrome is a rare condition involving multiple genes such as MEF2C and RASA1 and is potentially classified as a neurocutaneous syndrome. Deletion of the MEF2C gene accounts for the majority of clinical manifestations, including global developmental delay, intellectual disability, seizures, and behavioral disorders. RASA1 deletion is linked to capillary malformations with arteriovenous malformations (CM-AVM). Until now, only 17 cases have been described with deletions of both genes. We present the first case described in Spain with the microdeletion in the 5q14.3 cytoband simultaneously affecting both MEF2C and RASA1, exhibiting the typical manifestations of this entity, and review the published cases to date.

2.
Intensive Crit Care Nurs ; 85: 103788, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-39116510

RESUMEN

OBJECTIVE: To calculate the prevalence of physical restraint (PR) use in Spanish PICUs and (2) to analyze the correlation between the prevalence of PR use and the sociodemographic, clinical variables of the patients and the PICU structural and organizational variables. METHODS: We conducted a multicenter prevalence study from January 2022 to January 2023 in Spanish PICUs. The method of data collection was by direct observation, review of the patient's medical history, and asking the professionals involved in the patient's care. Three weekly 24-hour prevalence observations (morning, afternoon, and night) were conducted for 6 months. RESULTS: A total of 336 patients were included in the study, obtaining an overall crude prevalence of PR use of 16 % (95 %CI: 15 %-17.7 %). Pediatric patients with respiratory pathology received the highest number of hours of PR, with significant differences observed when comparing respiratory cases with post-surgical cases. Statistical significance was also observed when comparing the mean scores of hours of PR according to admission diagnosis (p = 0.01), with respiratory patients being the ones who were restrained the longest (24 h [20-24]) and infectious patients the least (15 h [14-20]). Patients who receive PR upon admission remain in this situation for more hours (24 h [15-24] and in the PICUs that specifically recorded PR application, fewer hours of PR occurred (20 h [4-24]). CONCLUSIONS: The use of PR is still present in the PICUs analyzed, with a crude prevalence of 16%. Factors such as the reason for admission, the use of respiratory support, and the reason for application of PR were linked to the hours of use of PR. IMPLICATIONS FOR CLINICAL PRACTICE: Knowing the prevalence of PR use will make professionals aware that it is still necessary to implement policies that avoid its use to prevent the side effects they have in pediatric patients.


Asunto(s)
Unidades de Cuidado Intensivo Pediátrico , Restricción Física , Humanos , España/epidemiología , Restricción Física/estadística & datos numéricos , Restricción Física/métodos , Unidades de Cuidado Intensivo Pediátrico/estadística & datos numéricos , Unidades de Cuidado Intensivo Pediátrico/organización & administración , Femenino , Masculino , Prevalencia , Preescolar , Lactante , Niño , Adolescente , Recién Nacido
3.
Photodiagnosis Photodyn Ther ; 49: 104314, 2024 Aug 22.
Artículo en Inglés | MEDLINE | ID: mdl-39181489

RESUMEN

BACKGROUND: Peripheral Facial Palsy (PFP) is a facial paralysis with various etiologies, including idiopathic causes (Bell's palsy), infections, trauma, and genetic factors. Traditional treatments involve antiviral medications, corticosteroids, and physiotherapy. However, new therapies, such as Low-Level Laser Therapy (LLLT), are emerging with promising results. METHODS: This case series reports on two patients with PFP treated with LLLT combined with Vitamin B1, B6, and B12 supplementation. The first case involved a 52-year-old female with PFP due to a viral infection. The second case was a 33-year-old male who developed PFP following a traumatic brain injury. Both patients received LLLT sessions every two weeks, targeting 10 points along the facial nerve pathway from the facial notch across the face. The laser device used was the Theraphy EC (DMC, Sao Carlos, SP, Brazil), with each point receiving 4 Joules of energy applied perpendicular to the skin after cleaning the face with water and soap to remove lipids that could interfere. The administration of Vitamin B was done using NEUROBIONTA tablets (Vitamin B1 + Vitamin B6 + Vitamin B12; Procter & Gamble, Santiago, Chile) with one tablet taken daily for 30 days. RESULTS: After six to seven sessions, both patients showed significant improvement in facial muscle function and overall facial symmetry. In the first case, improvements were noted in muscle tonicity and facial movements, with the patient reporting reduced facial disfigurement. In the second case, notable recovery in facial mobility and symmetry was observed, with the patient experiencing decreased paresthesia and restored muscle functionality. CONCLUSION: These findings suggest that LLLT, combined with Vitamin B1, B6, and B12 supplementation, may effectively improve facial muscle function and symmetry in PFP patients. The non-invasive nature and ease of application make LLLT a viable option for PFP treatment. Further studies with larger sample sizes and standardized protocols are necessary to confirm these results and establish LLLT as a standard treatment for PFP.

4.
Contact Dermatitis ; 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39164011

RESUMEN

BACKGROUND: Reports of allergic contact dermatitis (ACD) to phytonadione epoxide (PE) in cosmetics suggest that PE is as powerful a sensitiser as its parent compound phytonadione. OBJECTIVE: To evaluate a case series of ACD to PE in Spain. METHODS: We reviewed the records of 20 patients with ACD to cosmetics containing PE diagnosed across Spain between January 2019 and June 2023. RESULTS: All 20 patients developed patch test (PT) or repeated open application test (ROAT) reactions to cosmetics containing PE. All involved women with eyelid eczema. PT or ROAT with PE preparations were positive in 17/20 (85%). PE at 1%, 5%, 10% and 20% in pet. was patch-tested in 8/17, 14/17, 11/17 and 8/17 patients; being positive in 6/8 (75%), 13/14 (92.85%), 11/11 (100%) and 8/8 (100%), respectively. CONCLUSION: Regulators should, not only ban the specific dangerous cosmetic ingredients, but also consider to ban or keep under close surveillance those closely related products or derivatives that might potentially cause similar harmful effects. PTs with PE are suggested to be performed at a 5% concentration in pet. Higher concentrations (10% pet.) should be tested whenever PTs with 5% pet. PE are negative.

5.
Photodiagnosis Photodyn Ther ; 49: 104293, 2024 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-39098624

RESUMEN

BACKGROUND: A clinical trial was conducted to measure the effectiveness of a combined wavelength of 660 nm and 808 nm Low-Level Laser Therapy (LLLT) in reducing postoperative pain in partially and totally edentulous patients who underwent dental implant surgery. MATERIALS AND METHODS: The study included 20 blinded individuals divided in a randomized split-mouth fashion; the experimental group in one hemiarch and the control group in the other hemiarch. The experimental group received a total of 22.5 Joules (J) of LLLT divided into 5 points per implant immediately after surgery. The control group received a placebo treatment. At 24 h, 72 h, and 7 days, a blinded surveyor administered a pain questionnaire using a Numerical Rating Scale (NRS) combined with a Verbal Rating Scale (VRS) to assess pain onset after surgery, duration of the first pain episode, and pain evolution. Group data were analyzed with an ANOVA test for repeated measures and a paired t-test at defined time intervals. RESULTS: The experimental group showed a significant decrease in postoperative pain at 24 h and at 72 h for fully edentulous patients. There was a non-significant difference in the duration of the first pain episode. The mean pain levels decreased over time for both the experimental and control treatments, but only statistically significantly for the experimental group in the 24-72 h and 24 h to 7 days intervals. The same was true for the control group when comparing 24 and 72 h and between 24 h and 1 week. The time range between 72 h and 1 week showed no statistically significant differences. CONCLUSION: Within the limitations of this study, a single dose of 22.5 J LLLT per implant helps to decrease postoperative pain in dental implant surgery at 24 h for partially edentulous patients and at 24 and 72 h for fully edentulous patients.

6.
J Dent ; 149: 105283, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39096997

RESUMEN

OBJECTIVE: The aim of this study was to evaluate the effect of an adhesive loaded with 0.2 % copper (Cu) and 5 % zinc oxide (ZnO) nanoparticles (Nps) on its adhesive properties and enzymatic activity at the hybrid layer ex vivo in a randomized clinical model. METHODS: Fifteen patients participated in this study, and a total of 30 third molars were used. Occlusal cavities (4 × 4 × 2 mm) were made in each tooth, and randomly divided into 2 groups: (i) Experimental group: commercial adhesive loaded with 0.2wt % CuNps and 5wt % ZnONps; and (ii) Control Group: non-loaded commercial adhesive. Teeth were restored with resin composite. Thirty days later, extractions were performed. Extracted teeth were longitudinally sectioned. Nps in powder were characterized by field emission scanning electron microscope (FE-SEM) and energy dispersive X-ray (EDX) analysis. Microtensile bond strength (µTBS), degree of conversion (DC), and nanoleakeage (NL) tests were executed. In situ zymography (Zym) was performed to evaluate the gelatinolytic activity at the hybrid layer. Student's t-test (α = 0.05) was applied for all tests. RESULTS: µTBS and DC did not show significant differences (p > 0.05) between both groups. However, NL and gelatinolytic activity at the hybrid layer showed significant values (p < 0.05) for experimental group in comparison with control group. CONCLUSION: The addition of 0.2 % CuNps and 5 % ZnONps to a universal adhesive decreases NL and gelatinolytic activity at the hybrid layer, without jeopardizing its adhesive properties. SIGNIFICANCE: This randomized clinical trial with ex vivo analysis demonstrate that a commercial adhesive modified with 0.2wt % Cu and 5wt % ZnO Nps that does not affect its adhesive properties, reducing gelatinolytic activity and nanoleakage at the hybrid layer, which should contribute to an improvement of long term bonding-dentine clinical performance.


Asunto(s)
Resinas Compuestas , Cobre , Recubrimiento Dental Adhesivo , Microscopía Electrónica de Rastreo , Resistencia a la Tracción , Óxido de Zinc , Humanos , Óxido de Zinc/química , Cobre/química , Recubrimiento Dental Adhesivo/métodos , Resinas Compuestas/química , Nanopartículas/química , Recubrimientos Dentinarios/química , Dentina/efectos de los fármacos , Dentina/enzimología , Ensayo de Materiales , Masculino , Cementos de Resina/química , Adulto , Femenino , Propiedades de Superficie , Cementos Dentales/química , Tercer Molar , Restauración Dental Permanente/métodos , Espectrometría por Rayos X
7.
Transplant Proc ; 56(7): 1671-1677, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39174390

RESUMEN

BACKGROUND: The use of post-transplant cyclophosphamide (PTCy) is highly effective in preventing graft versus host disease (GVHD) for haploidentical allogeneic hematopoietic stem cell transplantation (allo-HSCT). There is limited data on the role of PTCy as GVHD prophylaxis in matched-sibling and fully matched-unrelated donor (MSD/MUD) allo-HSCT. METHODS: Our single-center retrospective study aims to compare outcomes of PTCy alone or in combination with mycophenolate mofetil and tacrolimus (PTCy/MMF/TAC) relative to methotrexate and tacrolimus (MTX/TAC). The primary endpoint of our study was GVHD-free, relapse free survival (GRFS). Secondary endpoints were overall survival (OS), disease free survival (DFS), and incidence of severe acute and chronic GVHD. We identified 74 adult patients who underwent MSD/MUD allo-HSCT at our institution from 2015 to 2023. RESULTS: Within our cohort, 33.8% (n = 25) received MTX/TAC, while 54.0% (n = 40) received PTCy/MMF/TAC, and 12.2% (n = 9) received PTCy alone. Patients receiving PTCY had the longest time to neutrophil engraftment relative to MTX/TAC (15 days vs. 12 days, P = .010). PTCy/MMF/TAC was associated with improved GRFS relative to MTX/TAC (hazard ratio [HR] = HR 0.42, 95% CI 0.19-0.93, P = .031), which persisted when controlling for age. Incidence of chronic GVHD was lower in the PTCy/MMF/TAC group compared to MTX/TAC (1-year 9.0% vs. 30.1%, HR 0.19, 95% CI 0.06-0.59, P = .005). However, OS and DFS were comparable across all groups. CONCLUSIONS: Our results demonstrate decreased rates of severe chronic GVHD resulting in improved GRFS when using PTCy/TAC/MTX as GVHD prophylaxis compared to MTX/TAC in MSD/MUD.


Asunto(s)
Ciclofosfamida , Enfermedad Injerto contra Huésped , Trasplante de Células Madre Hematopoyéticas , Inmunosupresores , Metotrexato , Tacrolimus , Enfermedad Injerto contra Huésped/prevención & control , Enfermedad Injerto contra Huésped/etiología , Humanos , Tacrolimus/administración & dosificación , Tacrolimus/uso terapéutico , Metotrexato/administración & dosificación , Metotrexato/uso terapéutico , Femenino , Estudios Retrospectivos , Adulto , Ciclofosfamida/administración & dosificación , Ciclofosfamida/uso terapéutico , Masculino , Persona de Mediana Edad , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Inmunosupresores/administración & dosificación , Quimioterapia Combinada , Adulto Joven , Ácido Micofenólico/administración & dosificación
8.
Acta Neuropathol ; 148(1): 4, 2024 Jul 12.
Artículo en Inglés | MEDLINE | ID: mdl-38995454

RESUMEN

Multiple system atrophy (MSA) is a rare neurodegenerative disease characterized by neuronal loss and gliosis, with oligodendroglial cytoplasmic inclusions (GCIs) containing α-synuclein being the primary pathological hallmark. Clinical presentations of MSA overlap with other parkinsonian disorders, such as Parkinson's disease (PD), dementia with Lewy bodies (DLB), and progressive supranuclear palsy (PSP), posing challenges in early diagnosis. Numerous studies have reported alterations in DNA methylation in neurodegenerative diseases, with candidate loci being identified in various parkinsonian disorders including MSA, PD, and PSP. Although MSA and PSP present with substantial white matter pathology, alterations in white matter have also been reported in PD. However, studies comparing the DNA methylation architectures of white matter in these diseases are lacking. We therefore aimed to investigate genome-wide DNA methylation patterns in the frontal lobe white matter of individuals with MSA (n = 17), PD (n = 17), and PSP (n = 16) along with controls (n = 15) using the Illumina EPIC array, to identify shared and disease-specific DNA methylation alterations. Genome-wide DNA methylation profiling of frontal lobe white matter in the three parkinsonian disorders revealed substantial commonalities in DNA methylation alterations in MSA, PD, and PSP. We further used weighted gene correlation network analysis to identify disease-associated co-methylation signatures and identified dysregulation in processes relating to Wnt signaling, signal transduction, endoplasmic reticulum stress, mitochondrial processes, RNA interference, and endosomal transport to be shared between these parkinsonian disorders. Our overall analysis points toward more similarities in DNA methylation patterns between MSA and PD, both synucleinopathies, compared to that between MSA and PD with PSP, which is a tauopathy. Our results also highlight several shared DNA methylation changes and pathways indicative of converging molecular mechanisms in the white matter contributing toward neurodegeneration in all three parkinsonian disorders.


Asunto(s)
Metilación de ADN , Lóbulo Frontal , Atrofia de Múltiples Sistemas , Enfermedad de Parkinson , Parálisis Supranuclear Progresiva , Sustancia Blanca , Humanos , Parálisis Supranuclear Progresiva/genética , Parálisis Supranuclear Progresiva/patología , Metilación de ADN/genética , Atrofia de Múltiples Sistemas/genética , Atrofia de Múltiples Sistemas/patología , Sustancia Blanca/patología , Enfermedad de Parkinson/genética , Enfermedad de Parkinson/patología , Anciano , Femenino , Masculino , Lóbulo Frontal/patología , Lóbulo Frontal/metabolismo , Persona de Mediana Edad , Anciano de 80 o más Años
9.
Talanta ; 277: 126417, 2024 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-38901191

RESUMEN

Agronomic biofortification using selenium nanoparticles (SeNPs) shows potential for addressing selenium deficiency but further research on SeNPs-plants interaction is required before it can be effectively used to improve nutritional quality. In this work, single-particle inductively coupled plasma-mass spectrometry (SP-ICP-MS) was used for tracing isotopically labeled SeNPs (82SeNPs) in Oryza sativa L. tissues. For this purpose, SeNPs with natural isotopic abundance and 82SeNPs were synthesized by a chemical method. The NPs characterization by transmission electron microscopy (TEM) confirmed that enriched NPs maintained the basic properties of unlabeled NPs, showing spherical shape, monodispersity, and sizes in the nano-range (82.8 ± 6.6 nm and 73.2 ± 4.4 nm for SeNPs and 82SeNPs, respectively). The use of 82SeNPs resulted in an 11-fold enhancement in the detection power for ICP-MS analysis, accompanied by an improvement in the signal-to-background ratio and a reduction of the size limits of detection from 89.9 to 39.9 nm in SP-ICP-MS analysis. This enabled 82SeNPs to be tracked in O. sativa L. plants cultivated under foliar application of 82SeNPs. Tracing studies combining SP-ICP-MS and TEM-energy-dispersive X-ray spectroscopy data confirmed the uptake of intact 82SeNPs by rice leaves, with most NPs remaining in the leaves and very few particles translocated to shoots and roots. Translocation of Se from leaves to roots and shoots was found to be lower when applied as NPs compared to selenite application. From the size distributions, as obtained by SP-ICP-MS, it can be concluded that a fraction of the 82SeNPs remained within the same size range as that of the applied NP suspension, while other fraction underwent an agglomeration process in the leaves, as confirmed by TEM images. This illustrates the potential of SP-ICP-MS analysis of isotopically enriched 82SeNPs for tracing NPs in the presence of background elements within complex plant matrices, providing important information about the uptake, accumulation, and biotransformation of SeNPs in rice plants.


Asunto(s)
Espectrometría de Masas , Nanopartículas , Oryza , Selenio , Selenio/química , Selenio/análisis , Oryza/química , Oryza/metabolismo , Espectrometría de Masas/métodos , Nanopartículas/química , Marcaje Isotópico , Hojas de la Planta/química , Hojas de la Planta/metabolismo , Nanopartículas del Metal/química , Tamaño de la Partícula
11.
Healthcare (Basel) ; 12(12)2024 Jun 20.
Artículo en Inglés | MEDLINE | ID: mdl-38921345

RESUMEN

(1) Objective: To examine the effects of blood flow restriction (BFR) training on muscle strength, cross-sectional area and knee-related function in patients selected for anterior cruciate ligament reconstruction (ACLR). (2) Methods: A literature search was conducted in PubMed, PEDro, Cochrane Library, Web of Science, SCOPUS, and ProQuest databases until 20 May 2024. Controlled clinical trials comparing the effects of BFR training with unrestricted training in patients before or after ACLR were selected. The GRADE approach was used to assess the degree of certainty for each meta-analysis. (3) Results: Ten studies were included (n = 287 participants). Standardized mean differences in favor of BFR training applied postoperatively were observed in knee extensor (SMD = 0.79; 95% CI = 0.06 to 1.52; I2: 68%) and flexor isokinetic strength (SMD = 0.53; 95% CI = 0.04 to 1.01; I2: 0%), and quadriceps cross-sectional area (SMD = 0.76; 95% CI = 0.27 to 1.26; I2: 0%). No changes were found in knee extensor isometric strength and knee-related function. The degree of certainty according to the GRADE was very low. (4) Conclusions: Very low degree of certainty suggests that BFR training provides additional benefits to unrestricted training on isokinetic strength and quadriceps cross-sectional area in patients undergoing ACLR.

12.
Eur J Investig Health Psychol Educ ; 14(5): 1470-1488, 2024 May 20.
Artículo en Inglés | MEDLINE | ID: mdl-38785595

RESUMEN

The past decade has seen a global increase in population age, especially in developed countries, where aging involves visual diseases such as age-related macular degeneration (AMD), which severely affect quality of life (QoL) and mental health, as well as increase isolation and care costs. This study investigated how persons with AMD perceive the impact of technology use on their QoL, focusing on potential disparities between urban and rural contexts in Spain. Using a cross-sectional observational design, data from the 2020 National Statistics Institute's Disability, Personal Autonomy, and Dependency Situations Survey were analyzed, focusing on QoL aspects based on the WHO items of the WHOQOL-100 scale. The results revealed a generally positive perception of technology among participants, with urban residents perceiving technology's positive impact more favorably. Sex discrepancies in technology perception were also observed, as women exhibited a more positive outlook on technology's influence on QoL. The analysis of QoL aspects, such as 'Visibility', 'Learning', 'Mobility', and 'Domestic life', highlighted distinct challenges faced by rural and urban populations, underscoring the importance of context-specific approaches in technology interventions. However, these perceptions were intertwined with comorbidities, which can exacerbate AMD-related issues. Furthermore, this study explored the role of technology in enhancing QoL among older adults with AMD, examining how it influences daily activities and independence, particularly in the context of AMD management. This study concluded that developing more-inclusive policies tailored to the specific needs of persons with AMD, with special attention to environmental and sex differences, is imperative to enhance the positive impact of technology on their QoL.

13.
Neurology ; 102(11): e209453, 2024 Jun 11.
Artículo en Inglés | MEDLINE | ID: mdl-38759132

RESUMEN

BACKGROUND AND OBJECTIVES: Degeneration of the presynaptic nigrostriatal dopaminergic system is one of the main biological features of Parkinson disease (PD), multiple system atrophy (MSA), progressive supranuclear palsy (PSP), and corticobasal degeneration (CBD), which can be measured using single-photon emission CT imaging for diagnostic purposes. Despite its widespread use in clinical practice and research, the diagnostic properties of presynaptic nigrostriatal dopaminergic (DAT) imaging in parkinsonism have never been evaluated against the diagnostic gold standard of neuropathology. The aim of this study was to evaluate the diagnostic parameters of DAT imaging compared with pathologic diagnosis in patients with parkinsonism. METHODS: Retrospective cohort study of patients with DAT imaging for the investigation of a clinically uncertain parkinsonism with brain donation between 2010 and 2021 to the Queen Square Brain Bank (London). Patients with DAT imaging for investigation of pure ataxia or dementia syndromes without parkinsonism were excluded. Those with a pathologic diagnosis of PD, MSA, PSP, or CBD were considered presynaptic dopaminergic parkinsonism, and other pathologies were considered postsynaptic for the analysis. DAT imaging was performed in routine clinical practice and visually classified by hospital nuclear medicine specialists as normal or abnormal. The results were correlated with neuropathologic diagnosis to calculate diagnostic accuracy parameters for the diagnosis of presynaptic dopaminergic parkinsonism. RESULTS: All of 47 patients with PD, 41 of 42 with MSA, 68 of 73 with PSP, and 6 of 10 with CBD (sensitivity 100%, 97.6%, 93.2%, and 60%, respectively) had abnormal presynaptic dopaminergic imaging. Eight of 17 patients with presumed postsynaptic parkinsonism had abnormal scans (specificity 52.9%). DISCUSSION: DAT imaging has very high sensitivity and negative predictive value for the diagnosis of presynaptic dopaminergic parkinsonism, particularly for PD. However, patients with CBD, and to a lesser extent PSP (of various phenotypes) and MSA (with predominant ataxia), can show normal DAT imaging. A range of other neurodegenerative disorders may have abnormal DAT scans with low specificity in the differential diagnosis of parkinsonism. DAT imaging is a useful diagnostic tool in the differential diagnosis of parkinsonism, although clinicians should be aware of its diagnostic properties and limitations. CLASSIFICATION OF EVIDENCE: This study provides Class II evidence that DAT imaging does not accurately distinguish between presynaptic dopaminergic parkinsonism and non-presynaptic dopaminergic parkinsonism.


Asunto(s)
Proteínas de Transporte de Dopamina a través de la Membrana Plasmática , Atrofia de Múltiples Sistemas , Trastornos Parkinsonianos , Tomografía Computarizada de Emisión de Fotón Único , Humanos , Femenino , Anciano , Masculino , Estudios Retrospectivos , Proteínas de Transporte de Dopamina a través de la Membrana Plasmática/metabolismo , Trastornos Parkinsonianos/diagnóstico por imagen , Trastornos Parkinsonianos/patología , Trastornos Parkinsonianos/metabolismo , Tomografía Computarizada de Emisión de Fotón Único/métodos , Persona de Mediana Edad , Atrofia de Múltiples Sistemas/diagnóstico por imagen , Atrofia de Múltiples Sistemas/patología , Atrofia de Múltiples Sistemas/metabolismo , Parálisis Supranuclear Progresiva/diagnóstico por imagen , Parálisis Supranuclear Progresiva/patología , Parálisis Supranuclear Progresiva/metabolismo , Anciano de 80 o más Años , Enfermedad de Parkinson/diagnóstico por imagen , Enfermedad de Parkinson/metabolismo , Enfermedad de Parkinson/patología , Estudios de Cohortes , Degeneración Corticobasal/diagnóstico por imagen , Degeneración Corticobasal/metabolismo , Dopamina/metabolismo , Terminales Presinápticos/metabolismo , Terminales Presinápticos/patología , Sensibilidad y Especificidad , Imágenes Dopaminérgicas
15.
Talanta ; 276: 126210, 2024 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-38728804

RESUMEN

High-precision isotopic analysis of mercury (Hg) using multi-collector ICP-mass spectrometry (MC-ICP-MS) is a powerful method for obtaining insight into the sources, pathways and sinks of this toxic metal. Modification of a commercially available mercury analyzer (Teledyne Leeman Labs, Hydra IIc - originally designed for quantification of Hg through sample combustion, collection of the Hg vapor on a gold amalgamator, subsequent controlled release of Hg and detection using cold vapor atomic absorption spectrometry CVAAS) enabled the system to be used for the direct high-precision Hg isotopic analysis of solid samples using MC-ICP-MS - i.e., without previous sample digestion and subsequent dilution. The changes made to the mercury analyzer did not compromise its (simultaneous) use for Hg quantification via CVAAS. The Hg vapor was mixed with a Tl-containing aerosol produced via pneumatic nebulization, creating wet plasma conditions, and enabling the use of Tl as an internal standard for correction of instrumental mass discrimination. Accurate and precise (0.10 ‰ 2SD, δ202Hg, n = 5) results were obtained for an in-house standard solution of Hg (20 ng Hg sample intake). Initial validation relied on the successful analysis of two solid certified reference materials of biological origin (BCR CRM 464 Tuna fish and NRC-CNRC TORT-3 Lobster hepatopancreas). It was shown that instrumental mass discrimination can be adequately corrected for by relying on the use of an aqueous Hg standard solution (NIST SRM 3133), without the need of matrix-matching. The novel setup developed thus allows for direct high-precision isotopic analysis of Hg in solid samples, thus enhancing the sample throughput. It is also suited for samples for which low amounts are available only and/or that are characterized by low Hg concentrations.

16.
Front Plant Sci ; 15: 1352169, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38567135

RESUMEN

Temperate fruit and nut crops require distinctive cold and warm seasons to meet their physiological requirements and progress through their phenological stages. Consequently, they have been traditionally cultivated in warm temperate climate regions characterized by dry-summer and wet-winter seasons. However, fruit and nut production in these areas faces new challenging conditions due to increasingly severe and erratic weather patterns caused by climate change. This review represents an effort towards identifying the current state of knowledge, key challenges, and gaps that emerge from studies of climate change effects on fruit and nut crops produced in warm temperate climates. Following the PRISMA methodology for systematic reviews, we analyzed 403 articles published between 2000 and 2023 that met the defined eligibility criteria. A 44-fold increase in the number of publications during the last two decades reflects a growing interest in research related to both a better understanding of the effects of climate anomalies on temperate fruit and nut production and the need to find strategies that allow this industry to adapt to current and future weather conditions while reducing its environmental impacts. In an extended analysis beyond the scope of the systematic review methodology, we classified the literature into six main areas of research, including responses to environmental conditions, water management, sustainable agriculture, breeding and genetics, prediction models, and production systems. Given the rapid expansion of climate change-related literature, our analysis provides valuable information for researchers, as it can help them identify aspects that are well understood, topics that remain unexplored, and urgent questions that need to be addressed in the future.

17.
Front Sports Act Living ; 6: 1372314, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38563020

RESUMEN

Introduction: This study aimed to determine the body accelerations (BA) profile of the judo contest of the male and female weight divisions and to ascertain the involvement of the vertical, mediolateral and anteroposterior axes in it. Methods: Forty-eight male and forty-eight female national and international level athletes (some of them medalists in World, European and national championships) participated in a 5-min simulated contest (official fight time plus breaks) against an opponent of the same sex and weight division, wearing an accelerometer. Heart rate, blood lactate and ratings of perceived exertion were recorded to certify that the athletes performed the fullest. Results: The t2way test expressed differences in the athletes' BA (p = 0.001) and three profiles were identified: the light/middle weight male divisions, the light/middle weight female divisions and the heavy male and female ones. Athletes of all weight divisions performed their BA during the contest in all three directions (the one-sample Person's chi-square did not detect any significantly predominant one: p = 0.400, p = 0.631, p = 0.844, p = 0.749, p = 0.644 and p = 0.895, for male light, moderate and heavy, female light, moderate and heavyweight athletes, respectively). Monte Carlo method simulations suggested as the most likely scenarios those with BA involving all axes, with a slight preference of the anteroposterior and mediolateral ones. Discussion: These results suggest that the demands on judo athletes in a contest differ between weight classes and sexes.

18.
Intensive Crit Care Nurs ; 83: 103690, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38598942

RESUMEN

OBJECTIVES: To determine the intention to use physical restraint (PR) and the relationship with sociodemographic and professional variables of the Paediatric Intensive Care Unit (PICU) nurses. RESEARCH METHODOLOGY/DESIGN AND SETTING: A multicentre and correlational study was carried out from October 2021 to December 2023 in five paediatric intensive care units from five maternal and child hospitals in Spain. The Paediatric Physical Restraint-Theory of Planned Behaviour Questionnaire was provided. Moreover, sociodemographic and employment variables were registered. RESULTS: A total of 230 paediatric nurses participated in the study. A total of 87.7 % were females with an average age of 35.5 ± 9.7 years and working experience of 10.5 ± 8.4 years. The mean scores obtained were 21.1 ± 3.8 for attitude, 13.1 ± 5.0 for subjective norms, 14.4 ± 4.3 for perceived behavioural control and 28.0 ± 6.0 for intention. The nurses apply more physical restraint to anxious patients, with scarce analgesics and sedation, those affected with pharmacological withdrawal symptoms and those with a high risk of accidental removal of vital support devices or fall from bed. The sex (p = 0.007) and type of employment contract (p = 0.01) are the variables that are significantly correlated with the intention to use of PR. CONCLUSION: The paediatric nurses analysed had a moderate attitude, social pressure and perceived behavioural control towards the use of PR. IMPLICATIONS FOR CLINICAL PRACTICE: It is important to know the factors that influence the intention to use physical restraint in order to standardise safe practice for critically ill paediatric and to ensure that patients' rights are respected by obtaining informed consent and assessing the prescription, continuation and removal of physical restraint.


Asunto(s)
Unidades de Cuidado Intensivo Pediátrico , Intención , Restricción Física , Humanos , Femenino , Masculino , Restricción Física/estadística & datos numéricos , Restricción Física/métodos , Restricción Física/psicología , Unidades de Cuidado Intensivo Pediátrico/organización & administración , Unidades de Cuidado Intensivo Pediátrico/estadística & datos numéricos , Estudios Transversales , Encuestas y Cuestionarios , España , Adulto , Persona de Mediana Edad , Actitud del Personal de Salud
19.
Nurs Crit Care ; 29(5): 1086-1099, 2024 09.
Artículo en Inglés | MEDLINE | ID: mdl-38531666

RESUMEN

BACKGROUND: Physical restraint is applied in pediatric intensive care units to carry out certain painful procedures and to ensure the maintenance and continuity of life support devices. There is a need to analyse the factors that influence the behaviour or intention to use physical restraint. AIM: To create and test psychometrically a paediatric version of the Physical Restraint-Theory of Planned Behaviour Questionnaire to assess paediatric critical care nurses' intention to use physical restraint. STUDY DESIGN: A psychometric study. Five medical-surgical Paeditric Intensive care Units from five hospitals in Spain. The study took place in three phases. In phase 1, the questionnaire was adapted. In phase 2, the content validity of each item was determined, and a pilot test was conducted. In phase 3, we administered the questionnaire and determined its psychometric properties. RESULTS: The assessment of the intention to use physical restraint was extended to all critical paediatric patients, two items were eliminated from the initial questionnaire, four new items were included, and the clinical scenarios of the intention subscale were expanded from three to six. Overall content validity index for the full instrument of 0.96 out of 1. The Paediatric Physical Restraint-Theory of Planned Behaviour Questionnaire is made up of four subscales (attitude, subjective norms (SN), perceived behavioural control (PBC), and intention) subdivided into 7 factors and 51 items. The internal consistency for the attitude subscale obtained a Cronbach's Alpha of 0.80 to 0.73, for the SN it was 0.72 to 0.89, for the PBC it was from 0.80 to 0.73 and for the intention subscale it was 0.75. CONCLUSIONS: The Paediatric Physical Restraint-Theory of Planned Behaviour Questionnaire is an instrument composed of seven factors and 51 items that validly and reliably assesses the intention of paediatric nurses to apply PR in PICUs. RELEVANCE FOR CLINICAL PRACTICE: Having this instrument will help health centres move towards restraint-free care by allowing managers to assess professionals' attitudes, beliefs, and intentions around the use of PR in PICUs.


Asunto(s)
Unidades de Cuidado Intensivo Pediátrico , Psicometría , Restricción Física , Humanos , Encuestas y Cuestionarios/normas , Restricción Física/psicología , España , Femenino , Masculino , Reproducibilidad de los Resultados , Niño , Intención , Actitud del Personal de Salud , Enfermería de Cuidados Críticos , Adulto , Teoría del Comportamiento Planificado
20.
Science ; 383(6679): 219-225, 2024 01 12.
Artículo en Inglés | MEDLINE | ID: mdl-38207046

RESUMEN

Biodiversity is declining globally, yet many biodiversity hotspots still lack comprehensive species conservation assessments. Using multiple International Union for Conservation of Nature (IUCN) Red List criteria to evaluate extinction risks and millions of herbarium and forest inventory records, we present automated conservation assessments for all tree species of the Atlantic Forest biodiversity hotspot, including ~1100 heretofore unassessed species. About 65% of all species and 82% of endemic species are classified as threatened. We rediscovered five species classified as Extinct on the IUCN Red List and identified 13 endemics as possibly extinct. Uncertainties in species information had little influence on the assessments, but using fewer Red List criteria severely underestimated threat levels. We suggest that the conservation status of tropical forests worldwide is worse than previously reported.


Asunto(s)
Especies en Peligro de Extinción , Extinción Biológica , Bosques , Árboles , Animales , Biodiversidad
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