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1.
Spectrochim Acta A Mol Biomol Spectrosc ; 324: 125022, 2025 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-39186876

RESUMEN

The highly adaptable optoelectronic and morphological properties of non-fullerene acceptors (NFAs) have made them a prominent research topic in the organic solar cell (OSC) field. This work describes the design of new molecules and investigates the potential optoelectronic aspects of remodified Y-series NFAs endowing with five new semi-circular shaped derivatives (BTPB1-BTPB5) based on the DFT-based quantum simulations. The designed molecules possess higher-lying LUMO energy levels with narrowed bandgaps and excellent coherence between the acceptor and core via inserted bridges. The molecules demonstrate a significant red shift and a wide-ranging absorption spectrum extending from 400 nm to 1500 nm, with the most extensive absorption occurring in the near-infrared (NIR) region. Effective π-π stacking and drastically lower binding energy certify facile charge dissociation and transmission rate. Thiophene-based bridge modification decreased reorganization energy by 47 % which results in facile charge transmission and high current density. Theoretically, simulated PCE is achieved as high as 31.49 % owing to the higher-lying LUMOs. The results demonstrate the value of designing systems and exploring new possibilities for developing effective Y-series NFAs-based high-performance organic solar cells.

2.
ESMO Open ; 9(9): 103684, 2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39255537

RESUMEN

BACKGROUND: Controlled trials have consistently demonstrated the efficacy of poly(ADP-ribose) polymerase inhibitors (PARPis) in patients with metastatic castration-resistant prostate cancer (mCRPC) and BRCA1 or BRCA2 alterations (BRCAalt). However, the reported efficacy of PARPi for alterations in other homologous recombination repair (HRR) genes is less consistent. We sought to evaluate the routine practice effectiveness of PARPi between and within these groups. DESIGN: Patient-level data from a deidentified nationwide (USA-based) cancer clinico-genomic database between January 2011 and September 2023 were extracted. Patients with mCRPC and comprehensive genomic profiling by liquid biopsy [circulating tumor DNA (ctDNA)] or tissue (tumor) biopsy and who received single-agent PARPi were included and grouped by BRCAalt, ATMalt, other HRR, or no HRR. We further subcategorized BRCAalt into homozygous loss (BRCAloss) and all other deleterious BRCAalt (otherBRCAalt). RESULTS: A total of 445 patients met inclusion criteria: 214 with tumor and 231 with ctDNA. BRCAalt had more favorable outcomes to PARPi compared with ATM, other HRR, and no HRR groups. Within the BRCAalt subgroup, compared with other BRCAalt, BRCAloss had a more favorable time to next treatment (median 9 versus 19.4 months, P = 0.005), time to treatment discontinuation (median 8 versus 14 months, P = 0.006), and routine practice overall survival (median 14.7 versus 19.4 months, P = 0.016). Tumor BRCAloss prevalence (3.1%) was similar to ctDNA prevalence in liquid biopsy specimens with high tumor fraction (>20%). BRCAloss was not detected in orthogonal germline testing. CONCLUSIONS: PARPi routine practice effectiveness between groups mirrors prospective trials. Within the BRCAalt group, BRCAloss had the best outcomes. Unless the ctDNA tumor fraction is very high, somatic tissue testing (archival or metastatic) should be prioritized to identify patients who may benefit most from PARPi. When tissue testing is not clinically feasible, sufficient ctDNA tumor fraction levels for detection are enriched at clinical timepoints associated with tumor progression.

3.
Int Endod J ; 2024 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-39256997

RESUMEN

AIM: The influence of hypercholesterolemia on the development of apical periodontitis (AP) is inconclusive. Recent studies revealed that cholesterol metabolite 27-hydoxycholesterol (27HC) can affect cellular responses to bacterial infections and oestrogen status and raloxifene may influence its action. Herein, we aimed to examine the impact of 27HC on production of inflammatory mediators by macrophages and the regulatory function of raloxifene. The contribution of 27HC to AP development and the therapeutic effect of raloxifene were evaluated in a rat model. METHODS: Murine macrophages J774 cells were used. The expression of inducible nitric oxide synthase (iNOS) was examined by Western blot. The concentrations of C-C motif chemokine ligand (CCL) 2 and 27HC were assessed by enzyme-linked immunosorbent assay. Colorimetric assay was used to evaluate cholesterol levels. Experimental AP was induced in ovariectomized (OVX) or un-operated rats receiving high-fat/high-cholesterol diet (HFHCD) or normal diet (ND). Micro-computed tomography and immunohistochemistry were employed to evaluate disease severity and the therapeutic effect of raloxifene. RESULTS: Cholesterol enhanced 27HC production in macrophages. 27HC induced iNOS and CCL2 synthesis by macrophages and estradiol suppressed the responses. In our animal model of AP, HFHCD plus OVX significantly augmented serum and lesion tissue levels of 27HC (p < .05 versus the ND group). Lesion size, infiltration of CD68+ cells, and iNOS+ monocytes were increased in parallel with 27HC accumulation. Raloxifene inhibited pro-inflammatory effects of 27HC on macrophages and suppressed AP progression in HFHCD/OVX rats (p < .05 versus the vehicle control group). CONCLUSIONS: Our results suggested that 27HC contributes to AP aggravation associated with hypercholesterolemia. Oestrogen deficiency may both enhance 27HC production and exacerbate its downstream action.

4.
mSystems ; : e0085924, 2024 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-39254034

RESUMEN

Due to recent improvements, Nanopore sequencing has become a promising method for experiments relying on amplicon sequencing. We describe a flexible workflow to generate and annotate high-quality, full-length 16S rDNA amplicons. We evaluated it for two applications, namely, (i) identification of bacterial isolates and (ii) species-level profiling of microbial communities. We assessed the identification of single bacterial isolates by sequencing, using a set of barcoded full-length 16S rRNA gene primer pairs (pair A), on 47 isolates encompassing multiple genera and compared those results with matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS)-based identification. Species-level community profiling was tested with two sets of barcoded full-length 16S primer pairs (A and B) and compared to the results obtained with shotgun Illumina sequencing using 27 stool samples. We developed a Nextflow pipeline to retain high-quality reads and taxonomically annotate them. We found high agreement between our workflow and MALDI-TOF data for isolate identification (positive predictive value = 0.90, Cramér's V = 0.857, and Theil's U = 0.316). For species-level community profiling, we found strong correlations (rs > 0.6) of alpha diversity indices between the two primer sets and Illumina sequencing. At the community level, we found significant but small differences when comparing sequencing techniques. Finally, we found a moderate to strong correlation when comparing the relative abundances of individual species (average rs = 0.6 and 0.533 for primers A and B). Despite identified shortcomings, the proposed workflow enabled accurate identification of single bacterial isolates and prominent features in microbial communities, making it a worthwhile alternative to MALDI-TOF MS and Illumina sequencing.IMPORTANCEA quick, robust, simple, and cost-effective method to identify bacterial isolates and communities in each sample is indispensable in the fields of microbiology and infection biology. Recent technological advances in Oxford Nanopore Technologies sequencing make this technique an attractive option considering the adaptability, portability, and cost-effectiveness of the platform, even with small sequencing batches. Here, we validated a flexible workflow to identify bacterial isolates and characterize bacterial communities using the Oxford Nanopore Technologies sequencing platform combined with the most recent v14 chemistry kits. For bacterial isolates, we compared our nanopore-based approach to matrix-assisted laser desorption ionization-time of flight mass spectrometry-based identification. For species-level profiling of complex bacterial communities, we compared our nanopore-based approach to Illumina shotgun sequencing. For reproducibility purposes, we wrapped the code used to process the sequencing data into a ready-to-use and self-contained Nextflow pipeline.

5.
Sci Rep ; 14(1): 20681, 2024 09 05.
Artículo en Inglés | MEDLINE | ID: mdl-39237714

RESUMEN

Subjects who have ischemia with non-obstructive coronary arteries (INOCA) experience angina pectoris with evidence of myocardial ischemia but without coronary stenosis. Few studies have investigated factors associated with its survival, especially insulin resistance. In this study, subjects with angina pectoris, without known diabetes mellites (DM), and with non-invasive tests showing myocardial ischemia were admitted for coronary angiography (CAG). Those whose CAG did not reveal stenosis and agreed to receive an oral glucose tolerance test (OGTT) 2 weeks after hospital discharge were enrolled for analysis. All-cause mortality was recorded, which served as the outcome of the study. A total of 587 subjects with INOCA, without known DM, and with OGTT data were analyzed. After OGTT and HbA1c tests, 86 subjects (14.7%) were newly diagnosed with DM and 59.8% had pre-DM. The median duration of follow-up was 7.03 years. Thirty-nine subjects died during the follow-up period. The incidence rate of mortality was 9.9 /1000 person-year. Those who died had a higher fasting glucose (101 ± 17 vs. 94 ± 13 mg/dl, p = 0.003) but a lower estimated glomerular filtration rate (eGFR) (54 ± 22 vs. 87 ± 30 ml/min, p < 0.001). In the Cox survival analysis, a higher fasting glucose (hazard ratio 1.053, p = 0.007) was associated with worse mortality for INOCA without DM (N = 501). On the contrary, a higher eGFR (hazard ratio 0.967, p = 0.012) was protective of better survival for non-diabetic INOCA (N = 501). In conclusion, for non-diabetic INOCA, higher fasting glucose was associated with worse mortality and higher eGFR was protective for better survival.


Asunto(s)
Glucemia , Ayuno , Prueba de Tolerancia a la Glucosa , Humanos , Masculino , Femenino , Glucemia/análisis , Glucemia/metabolismo , Persona de Mediana Edad , Ayuno/sangre , Anciano , Isquemia Miocárdica/mortalidad , Isquemia Miocárdica/sangre , Angiografía Coronaria , Vasos Coronarios/patología , Vasos Coronarios/metabolismo , Tasa de Filtración Glomerular , Diabetes Mellitus/mortalidad , Resistencia a la Insulina
6.
Ann Oncol ; 2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39241963

RESUMEN

BACKGROUND: Epstein-Barr virus-specific cytotoxic T lymphocyte (EBV-CTL) is an autologous adoptive T cell immunotherapy generated from the blood of individuals and manufactured without genetic modification. In a previous Phase 2 trial of locally recurrent or metastatic nasopharyngeal cancer (R/M NPC) patients, first-line gemcitabine and carboplatin (GC) and EBV-CTL combination demonstrated objective anti-tumor EBV-CTL activity and a favorable safety profile. The present study explored whether this combined first-line chemo-immunotherapy strategy would produce superior clinical efficacy and better quality of life compared to conventional chemotherapy treatment. PATIENTS AND METHODS: This multicenter, randomized, Phase 3 trial evaluated the efficacy and safety of GC followed by EBV-CTL vs. GC alone as first-line treatment for R/M NPC patients. Thirty clinical sites in Singapore, Malaysia, Taiwan, Thailand, and the United States (US) were included. Subjects were randomized to first-line GC (4 cycles) and EBV-CTL (6 cycles) or GC (6 cycles) in a 1:1 ratio. The primary outcome was overall survival (OS) and secondary outcomes included progression-free survival, objective response rate, clinical benefit rate, quality of life, and safety. CLINICALTRIALS: gov identifier: NCT02578641. RESULTS: 330 subjects with NPC were enrolled. Most subjects in both treatment arms received ≥4 cycles of chemotherapy and most subjects in the GC+EBV-CTL group received ≥2 infusions of EBV-CTL. The central Good Manufacturing Practices (GMP) facility produced sufficient EBV-CTL for 94% of GC+EBV-CTL subjects. The median OS was 25.0 months in the GC+EBV-CTL group and 24.9 months in the GC group (hazard ratio = 1.19; 95% CI: 0.91, 1.56; P = 0.194). Only 1 subject experienced a Grade 2 serious adverse event related to EBV-CTL. CONCLUSION: GC+EBV-CTL in subjects with R/M NPC demonstrated a favorable safety profile but no overall improvement in OS vs. chemotherapy. This is the largest adoptive T cell therapy trial reported in solid tumors to date.

8.
ESMO Open ; 9(9): 103689, 2024 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-39265219

RESUMEN

BACKGROUND: To present findings from a retrospective study conducted by the Ultra-Rare Sarcoma Working Group on metastatic low-grade fibromyxoid sarcoma (LGFMS), sclerosing epithelioid fibrosarcoma (SEF), and hybrid (H)-LGFMS/SEF across 28 global centres. METHODS: Patients treated at participating institutions from January 2000 to September 2022 were retrospectively selected. Diagnosis was confirmed by expert pathologists. Primary endpoint was progression-free survival (PFS-1) from metastasis detection to first progression or death. PFS-2 was calculated from therapy initiation. RESULTS: A total of 101 patients were identified (32 LGFMS, 50 SEF, 19 H-LGFMS/SEF). Median (m) follow-up was 62.1 months. mPFS-1 was 28.7, 11.8, and 20.3 months for LGFMS, SEF, and H-LGFMS/SEF, respectively. mOS was 145.8, 41.9, and 113.5 months, respectively. Treatments included anthracycline-based chemotherapy, gemcitabine-based chemotherapy (G), pazopanib, trabectedin, others. mPFS-2 was: 20.1, 5.5, and 3.5 months in H-LGFMS/SEF, SEF, and LGFMS, respectively, with anthracyclines; 19.5, 7.7, and 6.9 months in LGFMS, SEF, and H-LGFMS/SEF, respectively, with pazopanib; 12.0, 9.7, and 3.1 months in H-LGFMS/SEF, LGFMS, and SEF, respectively. Occasional responses occurred with ifosfamide/oral cyclophosphamide, and prolonged stable disease with immune checkpoint inhibitors. CONCLUSIONS: In this series, the largest available, metastatic LGFMS, SEF, and H-LGFMS/SEF showed different courses. Systemic agents have modest efficacy, informing future trials of novel agents for these tumours.

9.
Zhonghua Jie He He Hu Xi Za Zhi ; 47(9): 834-838, 2024 Sep 12.
Artículo en Chino | MEDLINE | ID: mdl-39266481

RESUMEN

A 54-year-old female patient presented with recurrent cough and sputum production over the past year and was hospitalized several times. CT examination revealed exudative lesions in both lungs, which were partially absorbed after treatment. However, they recurred shortly after discharge, and the patient had to be readmitted. In the past year, the patient had been hospitalized six times, and her throat swabs were positive for SARS-CoV-2 at four different points in time. After receiving anti-infective and antiviral treatment in other hospitals, the above symptoms were relieved. The patient tested negative for SARS-CoV-2, but symptoms recurred soon after. Eventually, the diagnosis of Goods syndrome was made based on the presence of B-cell loss, decreased immunoglobulin levels, an inverted CD4+/CD8+ ratio on admission, and a previous history of thymoma.


Asunto(s)
COVID-19 , SARS-CoV-2 , Humanos , Femenino , Persona de Mediana Edad , COVID-19/complicaciones , COVID-19/diagnóstico , Tos/etiología , Relación CD4-CD8 , Enfermedad Crónica , Pulmón/diagnóstico por imagen , Pulmón/patología
10.
J Exp Child Psychol ; 248: 106059, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-39232257

RESUMEN

This study explored the interplay of executive functions (EFs), social interactions, and theory of mind (ToM) in middle childhood. The first aim was to examine how specific EFs-shifting, inhibition, and working memory (WM)-predict social-perceptual and social-cognitive ToM. The second aim was to explore the potential mediating role of social interactions in the EF-ToM relationship. A total of 98 children aged 8 to 11 years completed three computerized EF tasks (task switching, flanker, and running span) and two ToM tasks (Strange Stories and Reading the Mind in the Eyes). The quality and quantity of social interactions were self-reported by using questionnaires. First, multiple regression analyses with age-adjusted scores examined how specific EFs predict ToM scores. The regression model was significant for social-cognitive ToM, but not for social-perceptual ToM. WM accuracy was the only significant, positive predictor for performance on the Strange Stories task. Second, mediation analyses assessed whether social interactions mediate this EF-ToM relationship. There were no significant mediation effects of the quality and quantity of social interactions on the relationship between WM and social-cognitive ToM. In conclusion, EFs play a significant role in explaining social-cognitive ToM variability in middle childhood. WM is relevant for understanding others' mental states, in contrast to shifting and inhibition that lacked predictive value. The results also suggest different cognitive processes associated with social-perceptual versus social-cognitive ToM in this developmental stage.


Asunto(s)
Función Ejecutiva , Memoria a Corto Plazo , Interacción Social , Teoría de la Mente , Humanos , Teoría de la Mente/fisiología , Niño , Femenino , Masculino , Función Ejecutiva/fisiología , Memoria a Corto Plazo/fisiología , Inhibición Psicológica , Cognición Social , Percepción Social , Desarrollo Infantil/fisiología
11.
Indian J Microbiol ; 64(3): 867-878, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39282171

RESUMEN

Vaccines signify one of the economical and reasonable means to prevent and eradicate the important infectious diseases. Conventional vaccines like live attenuated and inactivated vaccines comprise of whole pathogen either in attenuated or killed form. While, new generation vaccines have been designed to elicit immune response by genetically modifying only the nucleic acid portion of that pathogen. These new generation therapeutics include mRNA vaccines, DNA plasmid vaccines, chimeric vaccines and recombinant viral vector-based vaccines. Nucleic acid based vaccines use genetic material itself thus, they are highly stable and potent in nature to induce long-lasting immune response. Amongst these novel vaccine platforms, viral vector-based vaccines is one such emerging field which has proven to be extremely effective and potent. Nowadays, veterinary medicine has also accepted this innovative vectored vaccine platform to develop an effective control strategy against certain important viral diseases of animals. Viral vector-based vaccine uses various DNA and RNA viruses of human or animal origin to carry an immunogenic transgene of target pathogen. These vaccines enhance both humoral and cell mediated immune response without use of any accessory immune-stimulants. Till today, several viruses have been modified to be characterized as vaccine vectors. Currently, large number of research programs are going on to develop vectored vaccines and novel viral vector for veterinary use. In the present review, different kinds of viral vectored vaccines having veterinary importance have been discussed.

14.
Int J Mol Sci ; 25(17)2024 Aug 27.
Artículo en Inglés | MEDLINE | ID: mdl-39273225

RESUMEN

Cancer-associated fibroblast (CAF)s in the tumour microenvironment (TME) modulate the extracellular matrix, interact with cancer cells, and facilitate communication with infiltrating leukocytes, significantly contributing to cancer progression and therapeutic response. In prostate cancer (PCa), CAFs promote malignancy through metabolic rewiring, cancer stem cell regulation, and therapy resistance. Pre-clinical studies indicate that targeting amino acid metabolism, particularly glutamine (Gln) metabolism, reduces cancer proliferation and stemness. However, most studies lack the context of CAF-cancer interaction, focusing on monocultures. This study assesses the influence of CAFs on PCa growth by manipulating Gln metabolism using colour-labelled PCa cell lines (red) and fibroblast (green) in a co-culture system to evaluate CAFs' effects on PCa cell proliferation and clonogenic potential. CAFs increased the proliferation of hormone-sensitive LNCaP cells, whereas the castration-resistant C4-2 cells were unaffected. However, clonogenic growth increased in both cell lines. Gln deprivation and GLS1 inhibition experiments revealed that the increased growth rate of LNCAP cells was associated with increased dependence on Gln, which was confirmed by proteomic analyses. Tissue analysis of PCa patients revealed elevated GLS1 levels in both the PCa epithelium and stroma, suggesting that GLS1 is a therapeutic target. Moreover, the median overall survival analysis of GLS1 expression in the PCa epithelium and stroma identified a "high-risk" patient group that may benefit from GLS1-targeted therapies. Therefore, GLS1 targeting appears promising in castration-resistant PCa patients with high GLS1 epithelium and low GLS1 stromal expression.


Asunto(s)
Fibroblastos Asociados al Cáncer , Proliferación Celular , Técnicas de Cocultivo , Glutamina , Neoplasias de la Próstata , Microambiente Tumoral , Humanos , Glutamina/metabolismo , Masculino , Neoplasias de la Próstata/metabolismo , Neoplasias de la Próstata/patología , Fibroblastos Asociados al Cáncer/metabolismo , Fibroblastos Asociados al Cáncer/patología , Línea Celular Tumoral , Glutaminasa/metabolismo , Fibroblastos/metabolismo
15.
Int J Cardiol Heart Vasc ; 54: 101494, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39263410

RESUMEN

Objective: Literature presents conflicting results on the pros and cons of pledget-reinforced sutures during surgical aortic valve replacement (SAVR). We aimed to investigate the effect of pledget-reinforced sutures versus sutures without pledgets during SAVR on different outcomes in a systematic review and meta-analysis. Methods: A literature search was performed in five different medical literature databases. Studies must include patients undergoing SAVR and must compare any pledget-reinforced with any suturing technique without pledgets. The primary outcome was paravalvular leakage (PVL), and secondary outcomes comprised thromboembolism, endocarditis, mortality, mean pressure gradient (MPG) and effective orifice area (EOA). Results were pooled using a random-effects model as risk ratios (RRs) or mean differences (MDs) for which the no pledgets group served as reference. Results: Nine observational studies met the inclusion criteria. The risk of bias was critical in seven studies, and high and moderate in two other. The pooled RR for moderate or greater PVL was 0.59 (95 % confidence interval [CI] 0.13, 2.73). The pooled RR for mortality at 30-days was 1.02 (95 % CI 0.48, 2.18) and during follow-up was 1.15 (95 % CI 0.67, 2.00). For MPG and EOA at 1-year follow-up, the pooled MDs were 0.60 mmHg (95 % CI -4.92, 6.11) and -0.03 cm2 (95 % CI -0.18, 0.12), respectively. Conclusions: Literature on the use of pledget-reinforced sutures during SAVR is at high risk of bias. Pooled results are inconclusive regarding superiority of either pledget-reinforced sutures or sutures without pledgets. Hence, there is no evidence to support or oppose the use of pledget-reinforced sutures.

16.
Artículo en Inglés | MEDLINE | ID: mdl-39269646

RESUMEN

PURPOSE: Ulnar styloid process (USP) fractures are present in 40-65% of all distal radius fractures (DRFs). USP base fractures can be associated with distal radioulnar joint (DRUJ) instability and ulnar sided wrist pain and are treated by conservative management and surgical fixation, without consensus. This systematic review and meta-analysis compares operative to non-operative treatment of concomitant ulnar styloid base fractures in patients with distal radius fractures. METHODS: PubMed/Medline/Embase/CENTRAL databases were searched identifying RCTs and comparative observational studies. Effect estimates were extracted and pooled using random effect models to account for heterogeneity across studies. Results were presented as (standardized) mean differences (SMD or MD) or odds ratios (OR) and corresponding 95% confidence intervals (95%CI). RESULTS: Two RCTs (161 patients) and three observational studies (175 patients) were included. Tension band wiring was used for surgically treated USP fractures. Results were comparable across the different study designs and hence pooled across studies. Non-surgically treated patients had better wrist function at 6 months (SMD 0.57, 95%CI 0.30; 0.90, I2 = 0%). After 12 months there was no observed difference (MD 2.31, 95%CI -2.57; 7.19, I2 = 91%). Fewer patients had USP non-unions in the operative group (OR 0.08, 95%CI 0.04; 0.18, I2 = 0%). More patients suffered complications in the operative group (OR 14.3; 95%CI 1.08; 188, I2 = 89%). CONCLUSION: Routinely fixating USP base fractures as standard of care is not indicated. Surgery may be considered in selective cases (e.g. persistent DRUJ instability during ballottement test after fixation of the radius).

17.
Sci Rep ; 14(1): 21752, 2024 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-39294179

RESUMEN

The study focuses on synthesizing wollastonite using bypass and silica fume waste materials as starting materials. The novelty of this work is the utilization of temperature-induced forming technique for the synthesis of wollastonite. Bypass and silica fume are mixed with various CaO/SiO2 ratios and then cast and fired at temperatures ranging from 900 to 1200 °C. Rheological properties and zeta potential are characterized for the slurries to optimize the dispersant percentage. The fired samples' phase composition, structure properties, apparent porosity, linear shrinkage, and compressive strength are characterized. Results show that the sample with a CaO: SiO2 ratio of 1:1.45 is the optimum composition for forming mainly pure ß-wollastonite at 1100 °C, which changed into pseudo-wollastonite at about 1150 °C. The best physical and mechanical properties are obtained at 1170 °C, including apparent porosity of 8%, bulk density of 2.2 g/cm3, linear shrinkage of 13%, and compressive strength of 40 MPa, which widens its ceramic applications.

18.
Geriatr Nurs ; 60: 59-69, 2024 Aug 31.
Artículo en Inglés | MEDLINE | ID: mdl-39217843

RESUMEN

This exploratory interview study investigated nursing staff members' perspectives on the fundamentals of end-of-life communication with older people as part of advance care planning in home care, nursing home, and hospital settings. Separate semi-structured interviews were conducted with 17 nursing staff members about their experiences, opinions, and preferences before, during, and after end-of-life conversations. Overall themes clustering the fundamentals include preconditions such as feeling comfortable talking about the end of life and creating space for open communication. Fundamentals related to the actual conversation-such as using senses and applying associative communication techniques (e.g., using understandable language), following conversation phases, and being aware of interprofessional collaboration-were also considered important. This study emphasizes the importance of moving along with the older person as well as connecting, adapting, and letting go of control over the conversation's outcome. Many fundamentals can be traced back to the basics of nursing and the humanity of conversation.

19.
J Trop Pediatr ; 70(5)2024 Aug 10.
Artículo en Inglés | MEDLINE | ID: mdl-39142802

RESUMEN

The prevalence of overweight and obesity among adolescents has been increasing worldwide and is a significant public health challenge. Obesity is linked to several non-communicable diseases. This study aimed to determine the prevalence of overweight and obesity based on three growth references and described physical activities and dietary patterns among sixth graders in Ho Chi Minh City (HCMC). From 2018 to 2020, a cross-sectional study was conducted on 1375 students from 16 junior high schools in HCMC. We applied Probability Proportional to Size sampling to select schools. Anthropometric measurements, pubertal status assessment, and diet and physical activity data were collected through Food Frequency and Physical Activity Questionnaires. The study revealed a high prevalence of overweight and obesity among grade 6 students, with ∼45%-56% of students classified as overweight or obese using various growth references. Moreover, most students did not meet the World Health Organization's physical activity and sedentary behavior recommendations. Most students spent <60 min/day on moderate to vigorous physical activity, and over 70% spent at least 120 min/day on sedentary activities during weekdays and weekends. The diet of the students was also imbalanced, with high intakes of protein, lipids, and carbohydrates and low consumption of fruits and vegetables. Nutritionists and policymakers should inform and encourage opportunities for healthier food and more daily activity for children, starting before the sixth-grade, so they can learn how to make healthier choices and change their behavior before they reach adolescence.


Asunto(s)
Dieta , Ejercicio Físico , Conducta Alimentaria , Obesidad Infantil , Estudiantes , Humanos , Estudios Transversales , Masculino , Femenino , Vietnam/epidemiología , Prevalencia , Adolescente , Niño , Dieta/estadística & datos numéricos , Estudiantes/estadística & datos numéricos , Obesidad Infantil/epidemiología , Sobrepeso/epidemiología , Conducta Sedentaria , Encuestas y Cuestionarios , Instituciones Académicas , Índice de Masa Corporal
20.
Zhonghua Yi Xue Za Zhi ; 104(32): 3042-3049, 2024 Aug 20.
Artículo en Chino | MEDLINE | ID: mdl-39143772

RESUMEN

Objective: To anlysis the efficacy and safety of cut-umbilical cord milking (C-UCM) compared with immediate cord clamping in preventing anemia and iron deficiency among term cesarean-delivered newborns. Methods: A total of 485 pregnant women planning to deliver by cesarean section were recruited in this randomized controlled trial in Hunan Maternal and Child Health Hospital and Liuyang Maternal and Child Health Care Hospital from July 2016 to April 2019. A block randomization was conducted to evenly allocate them to the controlled group and the C-UCM group. In the controlled group, the cord was clamped within 30 seconds as routine. In the C-UCM group, the cord was first clamped at 25 cm from the newborn's navel, and then the blood in the cord was gently squeezed into the newborn's body until the cord became white and shriveled. The cord was clamped twice at 2-3 cm from the newborn's navel subsequently. Neonatal jaundice, hyperbilirubinemia and polycythemia were monitored before discharge. After the newborns discharged, their hemoglobin, red blood cell count, hematocrit (at the age of 1, 6 and 12 months) and serum ferritin (at the age of 6 and 12 months) were followed up; body length and weight were measured; and information about their feeding and iron supplementation were collected (at the age of 1, 6, 12 and 18 months). The two groups were compared by t test, Mann-Whitney U test, χ² test, or Fisher exact probability method. The hospital was set as a random item, and the mixed effects regression model was used to evaluate the effect of C-UCM on relevant indicators of cesarean-delivered newborns. Results: There were 244 women in the C-UCM group with an average age of (31.9±4.4) years, and 241 in the control group with an average age of (31.8±4.2) years (P>0.05). There was no statistically significant difference between the C-UCM group and the control group at 1, 6 and 12 months of age in hemoglobin [(123.6±14.5) vs (122.2±14.5) g/L, (115.3±9.4) vs (114.1±8.5) g/L, (115.6±9.6) vs (116.1±12.6) g/L] or anemia incidence rate [15.2% (17/112) vs 18.4% (19/103), 22.7% (34/150) vs 26.8% (44/164), 22.3% (25/112) vs 19.5% (22/113)] (all P>0.05). There was no statistically significant difference between the two groups at 6 and 12 months of age in serum ferritin [M (Q1, Q3), 39.9 (24.9, 61.8) vs 43.6 (25.2, 100.9) µg/L, 40.3 (25.4, 259.2) vs 40.3 (26.4, 167.6) µg/L)] or iron deficiency incidence rate [6.1% (5/82) vs 4.2% (3/72), 6.7% (5/75) vs 3.8% (3/80)] (all P>0.05). There were also no significant difference between the two groups in other indicators, such as the Z-score of weight-for-length, the incidence of neonatal jaundice, and the incidence of neonatal hyperbilirubinemia (all P>0.05). After adjusting for the relevant covariates, there were still no significant effects of C-UCM on these outcomes above. Conclusions: Compared to immediate cord clamping, the intervention of gently squeezing 25 cm of the cord does not significantly reduce the risk of anemia or iron deficiency in term cesarean-delivered newborns, nor does it have a significant impact on infant growth and development. Yet this intervention does not increase the risk of jaundice or hyperbilirubinemia in newborns as well.


Asunto(s)
Anemia Ferropénica , Cesárea , Cordón Umbilical , Humanos , Femenino , Recién Nacido , Embarazo , Anemia Ferropénica/prevención & control , Adulto , Sangre Fetal
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