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1.
Int J Food Sci Nutr ; : 1-12, 2024 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-39351626

RESUMO

Purple maize is a pigmented variety rich in antioxidants. Arabinoxylans (AX) are prebiotic compounds also found in the grain wall that can form gels. Recently, antioxidants have extensively been studied for their beneficial effects. However, these bioactive compounds do not easily reach the intestine in a stable form. These gels can protect certain compounds during in vitro digestion. This work aimed to extract the AX and simultaneously obtain the antioxidant compounds present in the external walls of the purple maize grain to produce gels with 2% and 4% AX to apply an in vitro digestion method. Popcorn maize (unpigmented) was used as a control. The amount of ferulic acid, polyphenols, and anthocyanins, and their antioxidative activity, were measured at in vitro digestion of the gels. This work highlights the ability of AX gels to enhance the potential bioavailability of antioxidant compounds including anthocyanins from purple maize after digestion.

2.
Nonlinear Dynamics Psychol Life Sci ; 28(4): 511-532, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39356473

RESUMO

A debate has taken place on the relationship between challenge and skills as the universal precondition of flow. Flow's precursor, Csikszentmihalyi, states that these two constructs are independent, while other scholars state the opposite. This research aims to better understand this relationship and explore its effect on the flow experience. As flow is considered a nonergodic and nonlinear process, we will base our analysis on an intra-individual level and then shift to an inter-individual level. The database consisted of 3,630 registers collected from a sample of 60 employees. At an intra-individual level, we observed the nature of the challenge-skills relationship classifying the participants according to the direction of these relationships (positive, negative, or nonsignificant correlation). At the inter-individual level, we explored the effect that the three groups had on the flow experience. We also examined nonlinear relationships (cusp modeling) among challenge, skills, and flow. The results showed that the challenge-skills relationship is not homogeneous between individuals. Flow theory is represented by the positive correlation group, but this pattern is the least frequent (21.6% of the cases) in our sample. Finally, the results showed that the nonlinear models fit the data better (R2nonlinear = .48, R2linear = .35, p < .01).


Assuntos
Dinâmica não Linear , Humanos , Masculino , Feminino , Adulto , Emprego
3.
Biology (Basel) ; 13(9)2024 Sep 12.
Artigo em Inglês | MEDLINE | ID: mdl-39336145

RESUMO

Maize, a globally significant cereal, is increasingly cultivated under challenging environmental conditions, necessitating innovations in sustainable agriculture. This study evaluates the synergistic effects of a novel technique combining a Bacillus velezensis A6 strain with a plant extract from the Lamiales order on maize growth and stress resilience. Employing a pilot field trial, this study was conducted on the "La Añoreta" experimental farm of the ECONATUR group, where various biostimulant treatments, including bacterial and plant extract applications, were tested against a control group. The treatments were applied during key vegetative growth stages (V10-Tenth-Leaf, VT-Tassel, R1-Silking) and monitored for effects on plant height, biomass, and fumonisin content. The results suggest that the combined treatment of Bacillus velezensis A6 and the plant extract increases maize height (32.87%) and yield (62.93%) and also reduces fumonisin concentrations, improving its resistance to stress, compared to the control and other treatments. This study highlights the potential of microbial and botanical biostimulants and its novel combination for improving crop productivity and sustainability, suggesting that such synergistic combinations could play a crucial role in enhancing agricultural resilience to environmental stresses.

4.
Hemasphere ; 8(9): e150, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39233903

RESUMO

This EHA-ESMO Clinical Practice Guideline provides key recommendations for managing HIV-associated lymphomas.The guideline covers clinical, imaging and pathological diagnosis; staging and risk assessment; treatment and follow-up.The author group encompasses a multidisciplinary group of experts from different institutions and countries in Europe.Recommendations are based on available scientific data and the authors' collective expert opinion.

5.
Molecules ; 29(17)2024 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-39275073

RESUMO

Thorium is a radionuclide used in various environmental studies such as dating, sediment movement, soil-plant transfer studies, and contamination of waste from the natural fuel cycle. The liquid-liquid extraction method using tri-n-butyl phosphate (TBP) allows for the separation of Th from the accompanying actinides. However, the separation of Th and U present in the same sample is not trivial. This separation is influenced by the starting acid (HCl or HNO3), the concentration of TBP in an organic solvent, and the concentration of the acid used for re-extracting Th, which is typically HCl. Therefore, it is necessary to study these factors to ensure that the method has sufficient chemical yield and selectivity in complex matrices. This study presents a systematic investigation of the aforementioned parameters, making the necessary variations to select an optimal method for the radiochemical separation of Th. The ideal conditions were obtained using 4 M HCl as the acid prior to extraction, a 1:4 solution of TBP in xylene, and 4 M HCl as the re-extracting agent. The accuracy and precision were studied in four intercomparison exercises conducted in quadruplicate, using the parameters Enumbers, RB(%), and RSD(%) for 232Th and 230Th. The sensitivity of the method was experimentally studied and the limit of detection (LoD) was determined according to ISO 11929:2005. Additionally, the linearity of the method showed that the experimental and theoretical activity concentrations of 232Th and 230Th had slopes of 1 with an intercept close to 0.

6.
Animals (Basel) ; 14(16)2024 Aug 12.
Artigo em Inglês | MEDLINE | ID: mdl-39199857

RESUMO

In ovine populations, the enzootic nature of Chlamydia abortus (C. abortus) is attributed to its capacity to establish persistent intracellular infections, which necessitate a cellular immune response mediated by interferon-gamma (IFN-γ) for effective resolution. In both natural hosts and murine models, interleukin-10 (IL-10) has been demonstrated to modulate the cellular immune response crucial for the eradication of C. abortus. During gestation, it has also been shown to play a role in preventing inflammatory damage to gestational tissues and foetal loss through the downregulation of pro-inflammatory cytokines. This paradigm can be key for events leading to a protective response towards an infectious abortion. Previous research successfully established a mouse model of chronic C. abortus infection using transgenic mice overexpressing IL-10 (IL-10tg), simulating the dynamics of chronic infection observed in non-pregnant natural host. This study aims to evaluate the efficacy of an experimental inactivated vaccine against C. abortus and to elucidate the immune mechanisms involved in protection during chronic infection using this model. Transgenic and wild-type (WT) control mice were immunized and subsequently challenged with C. abortus. Vaccine effectiveness and immune response were assessed via immunohistochemistry and cytokine serum levels over a 28-day period. Morbidity, measured by daily weight loss, was more pronounced in non-vaccinated transgenic IL-10 mice, though no mortality was observed in any group. Vaccinated control mice eliminated the bacterial infection by day 9 post-infection (p.i.), whereas presence of bacteria was noted in vaccinated transgenic IL-10 mice until day 28 p.i. Vaccination induced an early post-infection increase in IFN-γ production, but did not alter IL-10 production in transgenic mice. Histological analysis indicated suboptimal recruitment of inflammatory cells in vaccinated transgenic IL-10 mice compared to WT controls. In summary, the findings suggest that IL-10 overexpression in transgenic mice diminishes the protective efficacy of vaccination, confirming that this model can be useful for validating the efficacy of vaccines against intracellular pathogens such as C. abortus that require robust cell-mediated immunity.

7.
Child Dev ; 2024 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-39193904

RESUMO

This study examined the influence of linguistic input on the development of productive and receptive skills across three fundamental language domains: lexico-semantics, syntax, and phonology. Seventy-one (35 female) Basque-Spanish bilingual children were assessed at three time points (Fall 2018, Summer 2019, Winter 2021), between 4 and 6 years of age, by specifically examining language knowledge and spontaneous language use in each language. A direct impact of the amount of linguistic exposure on the longitudinal growth of lexico-semantic and syntactic abilities was observed in both languages. While phonological skills were not directly influenced by exposure, they were more proficient in the more exposed language. The use of lexically diverse and syntactically rich utterances developed relatively later than language knowledge, both supported by the amount of linguistic exposure.

9.
J Antimicrob Chemother ; 79(10): 2493-2499, 2024 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-39045785

RESUMO

BACKGROUND: Drug-drug interactions between antiretroviral treatment (ART) and cytostatics may have a negative impact in the prognosis of people with HIV (PWH) and cancer. OBJECTIVE: The objective of this study is to evaluate the impact of the implementation of interdisciplinary management and the type of ART in PWH diagnosed with lymphoid neoplasms. METHODS: This is a multicentric, retrospective observational cohort study including PWH diagnosed with lymphoid neoplasm who started first-line chemotherapy between 2008 and 2020. Demographic, clinical and therapeutic variables were obtained from the electronic medical records and associated with 5-year progression-free survival (PFS) and overall survival (OS) using Cox proportional hazard models. RESULTS: A total of 118 individuals were included. Boosted ART was being used in 55 (46.6%) cases at the time of neoplasm diagnosis. The Infectious Diseases or the Pharmacy Department was consulted before starting chemotherapy in 79/118 (66.9%) cases. Interdisciplinary management resulted in fewer subjects taking boosted ART (17.7% versus 71.8%, P < 0.001) and more subjects using unboosted integrase strand transfer inhibitor-based ART (74.7% versus 7.7%, P < 0.001). The use of boosted ART with chemotherapy was associated with worse 5-year PFS (P = 0.003) and 5-year OS (P = 0.016). There was a trend towards better 5-year PFS and OS when interdisciplinary management was implemented, with significant differences for individuals receiving boosted ART at neoplasm diagnosis (P = 0.0246 and P = 0.0329, respectively). CONCLUSIONS: Our findings underscore the significant impact of the type of ART on the prognosis of PWH undergoing chemotherapy. Encouraging collaborative management between oncologists, pharmacists and HIV teams for these patients enhances PFS and OS rates.


Assuntos
Infecções por HIV , Humanos , Masculino , Estudos Retrospectivos , Feminino , Infecções por HIV/tratamento farmacológico , Pessoa de Meia-Idade , Adulto , Interações Medicamentosas , Fármacos Anti-HIV/uso terapêutico , Linfoma/terapia , Linfoma/tratamento farmacológico , Idoso
10.
Nutrients ; 16(14)2024 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-39064756

RESUMO

BACKGROUND: The beneficial properties of wine by-products include actions that help prevent and treat cardiovascular conditions such as hypertension, primarily due to their antioxidant effects. Novel pharmacotherapies are being developed to treat arterial hypertension, including investigations into natural products exhibiting biological activity, necessitating rigorous evaluation of their efficacy and safety. This study aimed to identify and quantify phenolic compounds in Syrah (Vitis vinifera) grapes grown in the Brazilian Cerrado and their presence in winemaking by-products. It also examined the effects of grape pomace on blood pressure. METHODS: Fresh grapes, pomace, and lees, were subjected to spectrophotometric determination of total phenolic compounds, followed by identification and quantification using HPLC-DAD-ESI-MSn. Normotensive male rats (Wistar) and spontaneously hypertensive rats (SHR) received grape pomace-enriched (150 or 300 mg/kg/day, 14 days) or standard chow. Indirect arterial pressure was assessed, while vascular reactivity was evaluated in mesenteric resistance arteries. RESULTS: Pomace samples exhibited higher total phenolic compound concentrations than grapes or lees. Seven derivatives of hydroxycinnamic acids and twenty-one flavonols were identified. Quercetin-3-glucoside and ethyl caffeate were the most abundant phenolic compounds. Grape pomace-enriched chow demonstrated a dose-dependent hypotensive effect in rats. CONCLUSION: the abundance of flavonols and hydroxycinnamic acids, combined with their hypotensive effects, underscores the therapeutic potential of fine wine-making by-products produced in the Brazilian Cerrado.


Assuntos
Anti-Hipertensivos , Pressão Sanguínea , Hipertensão , Fenóis , Ratos Endogâmicos SHR , Ratos Wistar , Vitis , Vinho , Animais , Vitis/química , Masculino , Fenóis/análise , Fenóis/farmacologia , Pressão Sanguínea/efeitos dos fármacos , Hipertensão/tratamento farmacológico , Ratos , Vinho/análise , Anti-Hipertensivos/farmacologia , Antioxidantes/farmacologia , Antioxidantes/análise , Extratos Vegetais/farmacologia , Frutas/química , Brasil
11.
Health Equity ; 8(1): 301-306, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39011077

RESUMO

Background: The evolution of ischemic stroke is different accordin'g to sex and is one of the main causes of death in women. Previous studies have shown that women are less likely to receive acute treatment, and stroke center type is an important predictor of door-to-needle times. We investigated whether women are attended in a similar way to men in the telestroke network with specialized stroke physicians. Methods: A prospective registry of ischemic strokes recorded in the centralized Andalusian telestroke network was analyzed, focusing on sex differences. Demographic data, clinical characteristics, neuroimaging data, treatment intervals, follow-up visits, and clinical outcomes were collected. Results: A total of 3009 suspected stroke patients were attended to in the telestroke network from 2019 to 2023, of which 42.74% were women. Women were older (p < 0.001) and less independent upon arrival (p = 0.006) than men. There was no difference in the treatment received or in the treatment time intervals between the groups. Importantly, there was no difference in modified Rankin scale scores at 3 months between sexes. At 3 months post-stroke follow-up, women had fewer imaging tests (p = 0.018) and fewer outpatient visits (p < 0.001) than men. Conclusions: No significant difference between men and women has been found in the acute treatment of stroke in a large telestroke network. However, the same is not true for the follow-up and management of patients after the acute phase. This fact supports that strict adherence to protocols and specialization of care lead to equal care that avoids sex differences in stroke treatment and functional outcomes.

12.
iScience ; 27(7): 110247, 2024 Jul 19.
Artigo em Inglês | MEDLINE | ID: mdl-39006483

RESUMO

Cortical tracking of speech is relevant for the development of speech perception skills. However, no study to date has explored whether and how cortical tracking of speech is shaped by accumulated language experience, the central question of this study. In 35 bilingual children (6-year-old) with considerably bigger experience in one language, we collected electroencephalography data while they listened to continuous speech in their two languages. Cortical tracking of speech was assessed at acoustic-temporal and lexico-semantic levels. Children showed more robust acoustic-temporal tracking in the least experienced language, and more sensitive cortical tracking of semantic information in the most experienced language. Additionally, and only for the most experienced language, acoustic-temporal tracking was specifically linked to phonological abilities, and lexico-semantic tracking to vocabulary knowledge. Our results indicate that accumulated linguistic experience is a relevant maturational factor for the cortical tracking of speech at different levels during early language acquisition.

13.
Artigo em Inglês | MEDLINE | ID: mdl-39002929

RESUMO

Substance Use Disorder (SUD) represents one of the most frequent conditions worldwide which commonly coexists with major depressive disorder (MDD). This comorbidity (SUD + MDD) is one of the most prevalent with patients showing certain social and clinical characteristics that could lead to a worsening of their cognitive performance. However, despite these particularities, only a few studies have addressed the possible differences in cognitive performance between patients with SUD + MDD compared with those with SUD-only patients. Therefore, the aim of this study is to examine the clinical and cognitive profile of patients with SUD + MDD vs. SUD-only who are in early remission phase. For this purpose, 271 male patients underwent a clinical and neuropsychological assessment (SUD + MDD group: N = 101; SUD-only group: N = 170). Results indicated that SUD + MDD patients showed worse cognitive performance than SUD in visuospatial reasoning, verbal memory and learning, recognition, and processing speed even after a 3-month period of abstinence. Furthermore, these patients exhibited more self-reported prefrontal symptoms, as well as worse social and clinical conditions. This study indicates that the neurocognitive and clinical profile of patients with SUD + MDD could represent a risk since their characteristics have been associated with poorer recovery and prognosis. Our results could be helpful in clinical practice highlighting the need for cognitive remediation strategies in these populations, providing information that would allow the implementation of more appropriate treatments and preventive strategies.


Assuntos
Transtorno Depressivo Maior , Testes Neuropsicológicos , Transtornos Relacionados ao Uso de Substâncias , Humanos , Masculino , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/psicologia , Transtornos Relacionados ao Uso de Substâncias/complicações , Adulto , Transtorno Depressivo Maior/epidemiologia , Transtorno Depressivo Maior/psicologia , Transtorno Depressivo Maior/complicações , Pessoa de Meia-Idade , Comorbidade , Adulto Jovem , Escalas de Graduação Psiquiátrica
14.
Food Technol Biotechnol ; 62(2): 264-274, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-39045301

RESUMO

Research background: Controlled sprouting promotes physiological and biochemical changes in whole grains, improves their nutritional value and offers technological advantages for breadmaking as an alternative to traditional whole grains. The aim of this study is to find sprouting conditions for the grains of Klein Valor wheat variety (Triticum aestivum L.) that would increase the nutritional value without significantly affecting the gluten proteins, which are essential in wholegrain baked goods. Experimental approach: The chemical and nutritional composition, enzymatic activity and pasting properties of the suspensions of unsprouted and sprouted whole-wheat flour were evaluated. Results and conclusions: This bioprocess allowed us to obtain sprouted whole-wheat flour with different degrees of modification in its chemical composition. Sprouting at 25 °C resulted in an observable increase in enzymatic activity and metabolic processes, particularly α-amylases, which significantly affect the starch matrix and the associated pasting properties. Additionally, there was a smaller but still notable effect on the structure of the cell walls and the protein matrix due to the activation of endoxylanases and proteases. In contrast, sprouting at 15 and 20 °C for 24 h allowed for better process control as it resulted in nutritional improvements such as a higher content of free amino acid groups, free phenolic compounds and antioxidant capacity, as well as a lower content of phytates. In addition, it provided techno-functional advantages due to the moderate activation of α-amylase and xylanase. A moderate decrease in peak viscosity of sprouted whole-wheat flour suspensions was observed compared to the control flour, while protein degradation was not significantly prolonged. Novelty and scientific contribution: Sprouted whole-wheat flour obtained under milder sprouting conditions with moderate enzymatic activity could be a promising and interesting ingredient for wholegrain baked goods with improved nutritional values and techno-functional properties. This approach could avoid the use of conventional flour improvers and thus have a positive impact on consumer acceptance and enable the labelling of the product with a clean label.

15.
Cerebrovasc Dis Extra ; 14(1): 95-100, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39043151

RESUMO

INTRODUCTION: The Hub-and-Spoke stroke system seeks to enhance the efficiency of stroke care by establishing a cohesive network between healthcare facilities providing quality stroke care to patients. This study endeavors to evaluate the effectiveness and characterize the outcomes of acute ischemic stroke patients treated within the Hub-and-Spoke hospital system over 2 years. The assessment focused on thrombolysis rates, mortality, and disability at 3-month follow-up. METHODS: We conducted a retrospective single-center review to assess the service delivery and outcomes of acute ischemic stroke patients within the Hub-and-Spoke framework which was implemented in Q3 2021. The Hub-and-Spoke model aimed to provide appropriate neurological care for stroke patients, growing from four to eight spoke hospitals in 2 years. RESULTS: The study consisted of 132 stroke patients transferred to the hub hospital, and 42 (31.8%) of them had acute ischemic stroke. Among these 42 ischemic stroke patients, 76% of them were candidates for thrombolysis with a mean NIHSS of 12 (6-22). Among the subset of 32 patients eligible for intervention within the specified time window, a total of 23 individuals, constituting 72% received r-TPA. Regarding patients administered r-TPA, 91.2% demonstrated favorable functional outcomes with an mRS score of 0-1, while 8.7% exhibited a score of 2-3. Among those not given r-TPA, the mean NIHSS was 17 (ranging from 2 to 32). Their functional outcomes after 3 months revealed 52.5% with an mRS score of 0-1, 16% with a score of 2-3, 21.2% with a score of 4-5, and 10.5% with an mRS score of 6. CONCLUSION: Hub-and-Spoke networks represent a crucial advancement in stroke treatment, particularly for facilities lacking the capacity to manage strokes effectively. By leveraging added expertise and reducing the time from onset to diagnosis to treatment, these networks have significantly enhanced patient care. This enhancement is particularly evident in the increased rate of thrombolysis, resulting in reduced morbidity and prevention of mortality.


Assuntos
Avaliação da Deficiência , Fibrinolíticos , AVC Isquêmico , Terapia Trombolítica , Humanos , AVC Isquêmico/terapia , AVC Isquêmico/diagnóstico , AVC Isquêmico/mortalidade , Estudos Retrospectivos , Masculino , Filipinas/epidemiologia , Feminino , Idoso , Pessoa de Meia-Idade , Resultado do Tratamento , Fatores de Tempo , Fibrinolíticos/administração & dosagem , Prestação Integrada de Cuidados de Saúde , Estado Funcional , Recuperação de Função Fisiológica , Tempo para o Tratamento , Indicadores de Qualidade em Assistência à Saúde , Melhoria de Qualidade , Idoso de 80 Anos ou mais , Ativador de Plasminogênio Tecidual/administração & dosagem
16.
BMC Palliat Care ; 23(1): 157, 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38907206

RESUMO

BACKGROUND: Cancer is a disease that transcends what is purely medical, profoundly affecting the day-to-day life of both patients and family members. Previous research has shown that the consequences of cancer are greatly aggravated in patients at the end of life, at a time when they must also grapple with numerous unmet needs. The main objective of this study was to obtain more in-depth insight into these needs, primarily in patients with end-stage cancer nearing death. METHODS: Semi-structured interviews were conducted in Spain with cancer patients at the end of life (n = 3) and their family members (n = 12). The findings from the interviews were analyzed using qualitative thematic analysis and a grounded theory approach. RESULTS: Four major themes emerged from the interviews that explored the needs and concerns of patients with cancer at the end of life: (1) physical well-being (2) emotional well-being (3) social well-being and (4), needs relating to information and autonomous decision-making. The interviews also shed light on the specific needs of family members during this period, namely the difficulties of managing increased caregiver burden and maintaining a healthy work-life balance. CONCLUSIONS: A lack of support, information and transparency during a period of immense vulnerability makes the end-of-life experience even more difficult for patients with cancer. Our findings highlight the importance of developing a more in-depth understanding of the needs of this population, so that informed efforts can be made to improve palliative healthcare and implement more comprehensive care and support at the end of life.


Assuntos
Família , Neoplasias , Pesquisa Qualitativa , Assistência Terminal , Humanos , Neoplasias/psicologia , Neoplasias/terapia , Neoplasias/complicações , Masculino , Feminino , Assistência Terminal/psicologia , Assistência Terminal/métodos , Assistência Terminal/normas , Pessoa de Meia-Idade , Idoso , Família/psicologia , Espanha , Adulto , Teoria Fundamentada , Entrevistas como Assunto/métodos , Cuidadores/psicologia , Idoso de 80 Anos ou mais , Avaliação das Necessidades
17.
BMC Ophthalmol ; 24(1): 263, 2024 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-38898421

RESUMO

BACKGROUND: Paraproteinemic keratopathy is a rare disorder characterized by the bilateral accumulation of polychromatic deposits diffusely in all corneal layers together or not with diffuse or patchy pseudo lipid deposits. We present an atypical case of paraproteinemic keratopathy which lead to an initial misdiagnosis of infectious crystalline keratopathy. CASE PRESENTATION: a 69-year-old woman with an asymptomatic keratopathy detected during a cataract intervention. Slit-lamp examination revealed several hyper refringent subepithelial foci with fern-shaped branches, resembling crystalline keratopathy, in her left eye. Anterior segment optical coherence tomography revealed exclusively subepithelial hyperreflective lesions limited to the anterior stroma. The progressive bilateralization and progression of the condition prompted us to include other entities with crystalline corneal deposits in our differential diagnosis. Hematological analysis showed a high number of free Kappa light chains. Despite the typical clinical appearance of crystalline keratopathy, the atypical evolution and test results led us to consider that monoclonal gammopathy could be the cause of this entity. CONCLUSIONS: Paraproteinemic keratopathy may present in its early stages as a unilateral subepithelial crystalline keratopathy. Thus, it must always be taken into account in the differential diagnosis of any crystalline keratopathy, particularly when there are no predisposing factors for an infectious crystalline keratopathy. Early recognition of this rare entity is important to address the associated potentially serious systemic disease.


Assuntos
Doenças da Córnea , Paraproteinemias , Tomografia de Coerência Óptica , Humanos , Idoso , Feminino , Diagnóstico Diferencial , Doenças da Córnea/diagnóstico , Paraproteinemias/diagnóstico , Paraproteinemias/complicações , Tomografia de Coerência Óptica/métodos
18.
J Exp Bot ; 75(16): 5130-5145, 2024 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-38808567

RESUMO

Hydrogen sulfide regulates essential plant processes, including adaptation responses to stress situations, and the best characterized mechanism of action of sulfide consists of the post-translational modification of persulfidation. In this study, we reveal the first persulfidation proteome described in rice including 3443 different persulfidated proteins that participate in a broad range of biological processes and metabolic pathways. In addition, comparative proteomics revealed specific proteins involved in sulfide signaling during drought responses. Several proteins are involved in the maintenance of cellular redox homeostasis, the tricarboxylic acid cycle and energy-related pathways, and ion transmembrane transport and cellular water homeostasis, with the aquaporin family showing the highest differential levels of persulfidation. We revealed that water transport activity is regulated by sulfide which correlates with an increasing level of persulfidation of aquaporins. Our findings emphasize the impact of persulfidation on total ATP levels, fatty acid composition, levels of reactive oxygen species, antioxidant enzymatic activities, and relative water content. Interestingly, the role of persulfidation in aquaporin transport activity as an adaptation response in rice differs from current knowledge of Arabidopsis, which highlights the distinct role of sulfide in improving rice tolerance to drought.


Assuntos
Secas , Oryza , Proteínas de Plantas , Transdução de Sinais , Sulfetos , Oryza/metabolismo , Oryza/fisiologia , Oryza/genética , Sulfetos/metabolismo , Proteínas de Plantas/metabolismo , Proteínas de Plantas/genética , Aquaporinas/metabolismo , Aquaporinas/genética , Proteoma/metabolismo
19.
Haematologica ; 109(9): 2873-2883, 2024 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-38721737

RESUMO

Hyperleukocytosis in pediatric acute myeloid leukemia (AML) is associated with severe complications and an inferior outcome. We report results on patients with hyperleukocytosis included in the NOPHO-DBH AML 2012 study. We recommended immediate initiation of full-dose chemotherapy (etoposide monotherapy for 5 days as part of the first course), avoiding leukapheresis and prephase chemotherapy. Of 714 patients included in the NOPHO-DBH AML 2012 study, 122 (17.1%) had hyperleukocytosis, and 111 were treated according to the recommendations with etoposide upfront without preceding leukapheresis or prephase chemotherapy. The first dose was applied the same day as the AML diagnosis or the day after in 94%. Etoposide was administered via peripheral veins in 37% of patients without major complications. After initiation of etoposide the white blood cell counts on days 2-5 were 69%, 36%, 17% and 8%, respectively, of the pre-treatment level. On day 3, 81% of patients had a white blood cell count <100 x109/L. Five-year event-free and overall survival rates for all patients with hyperleukocytosis were 52.9% (95% confidence interval [95% CI]: 44.4-63.0) and 74.1% (95% CI: 66.4-82.6), compared to 64.9% (95% CI: 60.9-69.1) and 78.9% (95% CI: 75.4-82.4) for patients without hyperleukocytosis (P<0.001 for event-free survival, P=0.1 overall survival). Six-week early mortality was 4.1% for all patients with hyperleukocytosis (2.7% for the 111 patients treated with etoposide upfront). We conclude that management of hyperleukocytosis in pediatric AML with immediate etoposide monotherapy without leukapheresis or prephase chemotherapy is feasible, safe and effective. The reduction in white blood cell count during the first days is comparable to the reported results of leukapheresis, and outcomes seem at least equivalent to therapies including leukapheresis. Based on our results, we advocate abandoning leukapheresis for hyperleukocytosis in pediatric AML. Instead, it is crucial to start induction chemotherapy as early as possible.


Assuntos
Etoposídeo , Leucaférese , Leucemia Mieloide Aguda , Leucocitose , Humanos , Leucemia Mieloide Aguda/terapia , Leucemia Mieloide Aguda/mortalidade , Leucemia Mieloide Aguda/tratamento farmacológico , Leucemia Mieloide Aguda/diagnóstico , Criança , Feminino , Masculino , Pré-Escolar , Leucocitose/terapia , Lactente , Adolescente , Etoposídeo/administração & dosagem , Etoposídeo/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Resultado do Tratamento , Gerenciamento Clínico , Contagem de Leucócitos
20.
Hosp Pediatr ; 14(6)2024 May 07.
Artigo em Inglês | MEDLINE | ID: mdl-38712444

RESUMO

OBJECTIVES: The Pediatric psychoSocial Risk Index (PSRI) is psychosocial risk screening instrument for health practitioners. The objective of this study was to confirm validity evidence of a truncated version of PSRI. METHODS: PSRI was completed initially by 100 parents of children aged 0 to 18 years admitted to a tertiary hospital; 50 parents repeated the PSRI 3 days later. Analysis includes principal component analysis (PCA) to include the least number of items that explain the most variance in a shortened version of PSRI as well as confirming test-retest reliability and internal consistency of the shortened instrument. RESULTS: PSRI originally had 86 items, 85 close-ended items were analyzed. Three items were excluded because of missing test-retest data. Item reduction resulted in truncation of 16 items; 66 items remained. A Kaiser-Mayer-Orkin test of sampling adequacy resulted in reduction of 14 items; 52 items remained. Initial PCA led to reduction of 26 items. The PCA was rerun on remaining items, resulting in reduction of 6 further items; 18 items remained. Two items with >10% missingness were removed leaving 16 items in the final PSRI. Test-retest reliability was 0.98 and mean within-person across-item reliability was 0.95. Cronbach α was 0.9. Remaining items represented 9 social risk themes: food insecurity, medical complexity, home environment, behavioral issues, financial insecurity, parenting confidence, parental mental health, social support, and unmet medical needs. CONCLUSIONS: PSRI was reduced from 86 to 16 items with high internal consistency and reliability. PSRI demonstrates adequate validity supporting practitioners to screen families about their psychosocial risk.


Assuntos
Psicometria , Humanos , Pré-Escolar , Criança , Feminino , Masculino , Lactente , Adolescente , Reprodutibilidade dos Testes , Análise Fatorial , Medição de Risco , Recém-Nascido , Inquéritos e Questionários/normas , Pais/psicologia
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