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1.
BMC Vet Res ; 20(1): 399, 2024 Sep 07.
Artículo en Inglés | MEDLINE | ID: mdl-39244529

RESUMEN

BACKGROUND: Klebsiella pneumoniae (KP), responsible for acute lung injury (ALI) and inflammation of the gastrointestinal tract, is a zoonotic pathogen that poses a threat to livestock farming worldwide. Nevertheless, there is currently no validated vaccine to prevent KP infection. The development of mucosal vaccines against KP using Lactobacillus plantarum (L. plantarum) is an effective strategy. RESULTS: Firstly, the L. plantarum strains NC8-pSIP409-aCD11c' and NC8-pLc23-aCD11c were constructed via homologous recombination to express the aCD11c protein either inducibly or constitutively. Both NC8-pSIP409-aCD11c' and NC8-pLc23-aCD11c strains could enhance the adhesion and invasion of L. plantarum on bone marrow-derived dendritic cells (BMDCs), and stimulate the activation of BMDCs compared to the control strain NC8-pSIP409 in vitro. Following oral immunization of mice with NC8-pSIP409-aCD11c' and NC8-pLc23-aCD11c, the cellular, humoral, and mucosal immunity were significantly improved, as evidenced by the increased expression of CD4+ IL-4+ T cells in the spleen, IgG in serum, and secretory IgA (sIgA) in the intestinal lavage fluid (ILF). Furthermore, the protective effects of L. plantarum against inflammatory damage caused by KP infection were confirmed by assessing the bacterial loads in various tissues, lung wet/dry ratio (W/D), levels of inflammatory cytokines, and histological evaluation, which influenced T helper 17 (Th17) and regulatory T (Treg) cells in peripheral blood and lung. CONCLUSIONS: Both the inducible and constitutive L. plantarum strains NC8-pSIP409-aCD11c' and NC8-pLc23-aCD11c have been found to stimulate cellular and humoral immunity levels and alleviate the inflammatory response caused by KP infection. These findings have provided a basis for the development of a novel vaccine against KP.


Asunto(s)
Inmunidad Celular , Infecciones por Klebsiella , Klebsiella pneumoniae , Lactobacillus plantarum , Animales , Infecciones por Klebsiella/prevención & control , Infecciones por Klebsiella/veterinaria , Infecciones por Klebsiella/inmunología , Klebsiella pneumoniae/inmunología , Ratones , Administración Oral , Femenino , Ratones Endogámicos BALB C , Vacunas Bacterianas/inmunología , Vacunas Bacterianas/administración & dosificación , Células Dendríticas/inmunología , Inflamación
2.
Ying Yong Sheng Tai Xue Bao ; 35(7): 1762-1770, 2024 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-39233404

RESUMEN

To understand the adaptation of water use strategy of plant community to habitat heterogeneity, we measured the δD and δ18O values of xylem water of shrubs and potential water sources (soil water in different layers or groundwater) of Ammopiptanthus mongolicus communities on sand dune and Gobi from April to September in 2021 in the Ulan Buh Desert. Employing the MixSIAR model, we examined the seasonal dynamics of water source of each shrub by quantifying the contribution of different potential water sources. The results showed that A. mongolicus and Artemisia xerophytica on sand dune mainly used soil water of 10-25 cm in April and May after heavy rain in early spring, whereas Artemisia ordosica mainly used soil water of 10-200 cm. During the drought event within summer from June to August, A. mongolicus increasingly used soil water of 100-200 cm and groundwater, but A. xerophytica and A. ordosica increased the usage of 50-200 cm soil water. After the moderate rain in September, A. mongolicus evenly used soil water in all layers and groundwater, whereas two Artemisia shrubs preferred soil water of 10-50 cm. On Gobi, A. mongolicus and Nitraria sphaerocarpa evenly used soil water in all layers in April and May, mainly used 50-150 cm soil water from June to August and used 10-50 cm soil water in September. Convolvulus tragacanthoides mainly used soil water of 10-50 cm (from April to May), 25-150 cm (from June to August), and 10-25 cm (in September), separately. There were seasonal differences in water use of three shrubs on sand dune and Gobi A. mongolicus communities. During drought, A. mongolicus on sand dune could use deep soil water and groundwater, and that on Gobi relied only on deep soil water, which was more sensitive to rainfall.


Asunto(s)
Artemisia , Clima Desértico , Ecosistema , Suelo , Agua , China , Agua/análisis , Artemisia/crecimiento & desarrollo , Suelo/química , Estaciones del Año , Agua Subterránea/análisis , Agua Subterránea/química , Sequías , Lluvia
3.
Support Care Cancer ; 32(9): 602, 2024 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-39167220

RESUMEN

PURPOSE: The patient-centered communication principles in Western countries are widely esteemed. In Eastern countries, a family-centered approach to medical decision-making is preferred. However, the predicaments faced by attending physicians and their coping strategies in the process of truth-telling about cancer are unknown. Therefore, this study aimed to understand attending physicians' predicaments and coping strategies in implementing truth-telling for cancer in Taiwan. METHODS: This study used a qualitative description approach to conduct in-depth interviews with attending physicians. Data were collected from two medical centers in Taiwan. Purposive sampling was also conducted. A total of 17 attending physicians participated in individual semi-structured interviews. All interviews were audio recorded and transcribed verbatim. Inductive content analysis was used to analyze and develop the subcategories, generic categories, and main categories. RESULTS: Four main categories emerged: (1) Causing harm to the patient: Family members' cooperation is needed. (2) Family members' request to conceal the truth: Physicians should judge based on the patient's disease condition. (3) Delayed treatment: Physicians should prioritize establishing confidence. (4) Delivering bad news about relapse: Physicians have different coping strategies. CONCLUSION: Physicians in Taiwan face challenges but prioritize family-centered care despite having coping strategies to protect patients. When faced with a scenario in which family members request concealment of truth, most physicians cooperate with them to determine the level and method of disclosing unfavorable news to patients. Physicians should prioritize patients' psychological needs when they experience relapse or metastasis or face strong negative emotions.


Asunto(s)
Adaptación Psicológica , Neoplasias , Relaciones Médico-Paciente , Investigación Cualitativa , Revelación de la Verdad , Humanos , Masculino , Femenino , Neoplasias/psicología , Taiwán , Adulto , Persona de Mediana Edad , Entrevistas como Asunto , Actitud del Personal de Salud , Habilidades de Afrontamiento
4.
Poult Sci ; 103(9): 104009, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39002365

RESUMEN

Avian leukosis virus (ALV) is an enveloped retrovirus with a single-stranded RNA genome, belonging to the genus Alpharetrovirus within the family Retroviridae. The disease (Avian leukosis, AL) caused by ALV is mainly characterized by tumor development and immunosuppression in chickens, which increases susceptibility to other pathogens and leads to significant economic losses in the Chinese poultry industry. The government and poultry industry have made lots of efforts to eradicate ALV, but the threat of which remains not vanished. This review provides a summary of the updated understanding of ALV in China, which mainly focuses on genetic and molecular biology, epidemiology, and diagnostic methods. Additionally, promising antiviral agents and ALV eradication strategies performed in China are also included.


Asunto(s)
Virus de la Leucosis Aviar , Leucosis Aviar , Pollos , Enfermedades de las Aves de Corral , Animales , Virus de la Leucosis Aviar/fisiología , Leucosis Aviar/prevención & control , Leucosis Aviar/virología , Leucosis Aviar/epidemiología , China/epidemiología , Enfermedades de las Aves de Corral/prevención & control , Enfermedades de las Aves de Corral/virología , Enfermedades de las Aves de Corral/epidemiología
5.
J Multidiscip Healthc ; 17: 3307-3322, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39045490

RESUMEN

Background: Spiritual care is not limited to palliative care or end-of-life care. The spiritual well-being of patients also needs to be taken into account in the multidisciplinary healthcare system of whole person care. For medical institutions providing spiritual care, it is necessary to develop a tool for clinical spiritual care providers to assess patient's spiritual well-being of. Aim: The purpose of this study was to construct a questionnaire that would allow spiritual care providers or pastors to assess the spiritual well-being of patients. Methods: The study combined qualitative and quantitative research methods. Qualitative research used in-depth interviews or focus groups with patients and family members to obtain textual data. The text was analyzed by Colaizzi analysis. The researchers constructed the Patient's Spiritual Well-Being Scale (PtSpWBS) from the themes obtained through qualitative analysis. Through the participation of 661 patients, quantitative research was conducted to analyze the reliability, validity and component analysis of the PtSpWBS. Results: Through qualitative research, it was found the spiritual needs of patients had two domains, namely spiritual awareness and spiritual dynamics. Based on this result, a 15-question PtSpWBS was designed. Cronbach's alpha was used to check the reliability of the PtSpWBS, and the internal consistency was calculated with a Cronbach's alpha value of 0.899. The Bartlett's Test of Sphericity of the PtSpWBS reached a significant difference (p<0.0001), and the KMO value of sampling appropriateness was 0.900. The three components were spiritual health, religion connection, and spiritual awareness. A PtSpWBS score ≦ 41 indicated the patient had poor spiritual well-being. Conclusion: The study constructed the PtSpWBS for clinical spiritual care providers to evaluate spiritual well-being of patients; this questionnaire has good reliability and validity. The PtSpWBS can be truly used by departments that specialize in providing spiritual care in medical institutions to conduct spiritual well-being assessment.

6.
Am J Cardiol ; 226: 108-117, 2024 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-39009056

RESUMEN

COVID-19 may predispose patients to cardiac injuries but whether COVID-19 infection affects the morphological features of coronary plaques to potentially influence the outcome of patients with coronary artery disease (CAD) remains unknown. By using optical coherence tomography (OCT), this study compared the characteristics of coronary plaque in patients with CAD with/without COVID-19 infection. The 206 patients were divided into 2 groups. The COVID-19 group had 113 patients between December 7, 2022, and March 31, 2023, who received OCT assessment after China decided to lift the restriction on COVID-19 and had a history of COVID-19 infection. The non-COVID-19 group had 93 patients without COVID-19 infection who underwent OCT before December 7, 2022. The COVID-19 group demonstrated a higher incidence of plaque ruptures (53.1% vs 38.7%, p = 0.039), erosions (28.3% vs 11.8%, p = 0.004), fibrous (96.5% vs 89.2%, p = 0.041) and diffuse lesions (73.5% vs 50.5%, p <0.001) compared with the non-COVID-19 group, whereas non-COVID-19 group exhibited a higher frequency of cholesterol crystals (83.9% vs 70.8%, p = 0.027), deep calcifications (65.6% vs 51.3%, p = 0.039) and solitary lesions (57.0% vs 34.5%, p = 0.001). Kaplan-Meier survival analysis revealed a significantly lower major adverse cardiac events-free probability in the COVID-19 group (91.6% vs 95.5%, p = 0.006) than in the non-COVID-19 group. In conclusion, OCT demonstrated that COVID-19 infection is associated with coronary pathological changes such as more plaque ruptures, erosions, fibrosis, and diffuse lesions. Further, COVID-19 infection is associated with a higher propensity for acute coronary events and a higher risk of major adverse cardiac events in patients with CAD.


Asunto(s)
COVID-19 , Enfermedad de la Arteria Coronaria , Vasos Coronarios , Placa Aterosclerótica , Tomografía de Coherencia Óptica , Humanos , COVID-19/complicaciones , COVID-19/epidemiología , Tomografía de Coherencia Óptica/métodos , Masculino , Femenino , Enfermedad de la Arteria Coronaria/diagnóstico por imagen , Persona de Mediana Edad , Vasos Coronarios/diagnóstico por imagen , Anciano , Placa Aterosclerótica/diagnóstico por imagen , Placa Aterosclerótica/complicaciones , SARS-CoV-2 , China/epidemiología , Estudios Retrospectivos
7.
Ann Hematol ; 103(8): 2721-2727, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38916741

RESUMEN

Immune thrombocytopenia (ITP) is the most common autoimmune disorder characterized by decreased platelet counts and impaired platelet production. Eltrombopag has been demonstrated to be safe and effective for children with ITP. It is reported eltrombopag can achieve a sustained response off treatment. However, data on its overall efficacy and safety profile are scarce in children. This study aimed to investigate the long-term efficacy of eltrombopag in children with ITP. Treatment overall response (OR), complete response (CR), response (R), durable response (DR), no response (NR), treatment free remission (TFR), and relapse rate, were assessed in 103 children with ITP during eltrombopag therapy. The OR rate, CR rate, R rate, DR rate, NR rate, TFR rate, and relapse rate were 67.0%, 55.3%, 11.7%, 56.3%, 33.0%, 60%, 36.2%, respectively. Importantly, we discovered that newly diagnosed ITP patients showed a higher DR rate, TFR rate and lower relapse rate compared to persistent and chronic ITP patients. Furthermore, the CR rate, DR rate, and TFR rate of 5 patients under six months were 100%. None of them suffered relapse. The most common adverse event (AEs) was hepatotoxicity (7.77%). Our study highlighted the critical role of eltrombopag as the second-line treatment in children with ITP who were intolerant to first-line therapy.


Asunto(s)
Benzoatos , Hidrazinas , Púrpura Trombocitopénica Idiopática , Pirazoles , Humanos , Pirazoles/uso terapéutico , Pirazoles/efectos adversos , Hidrazinas/uso terapéutico , Hidrazinas/efectos adversos , Hidrazinas/administración & dosificación , Benzoatos/uso terapéutico , Benzoatos/efectos adversos , Púrpura Trombocitopénica Idiopática/tratamiento farmacológico , Púrpura Trombocitopénica Idiopática/sangre , Niño , Masculino , Femenino , Preescolar , Adolescente , Lactante , Resultado del Tratamiento , Estudios Retrospectivos , Inducción de Remisión , Recurrencia
8.
Ann Work Expo Health ; 68(7): 678-687, 2024 Aug 08.
Artículo en Inglés | MEDLINE | ID: mdl-38888222

RESUMEN

OBJECTIVE: The aim of our study is to explore the associations between multiple types of workplace violence (WPV) and burnout risk, sleep problems, and leaving intention among nurses. METHODS: This cross-sectional survey recruited 1,742 nurses, and data on WPV experiences were collected through self-administered questionnaires. Work conditions, burnout risk scales, sleep quality, and leaving intentions were also evaluated. Multivariate logistic regression analyses were performed to examine the associations of WPV with burnout risk, sleep quality, and leaving intentions, adjusting for demographic characteristics and work conditions. RESULTS: The study found that 66.7% of nurses reported experience of WPV, with 26.9% experiencing both physical and nonphysical forms. Those who experienced multiple types of WPV reported worse work conditions, higher burnout risk, poorer sleep quality, and a stronger leaving intention compared to those without such experiences. Adjusting for working conditions, logistic regression analysis showed that nurses who experienced multiple types of WPV had 2.12-fold higher odds of high personal burnout risk, 2.36-fold higher odds of high client-related burnout risk, 1.95-fold higher odds of poor sleep quality, and 1.80-fold higher odds of high leaving intention, compared to those without WPV experiences. CONCLUSIONS: Strategies by hospital managers and policymakers to monitor and reduce workplace violence are vital for sustaining nurses' mental health, well-being, and preventing early attrition from the profession.


Asunto(s)
Agotamiento Profesional , Personal de Enfermería en Hospital , Reorganización del Personal , Violencia Laboral , Humanos , Agotamiento Profesional/psicología , Agotamiento Profesional/epidemiología , Violencia Laboral/estadística & datos numéricos , Violencia Laboral/psicología , Femenino , Estudios Transversales , Masculino , Adulto , Encuestas y Cuestionarios , Reorganización del Personal/estadística & datos numéricos , Personal de Enfermería en Hospital/psicología , Personal de Enfermería en Hospital/estadística & datos numéricos , Intención , Calidad del Sueño , Lugar de Trabajo/psicología , Enfermeras y Enfermeros/psicología , Enfermeras y Enfermeros/estadística & datos numéricos , Persona de Mediana Edad , Factores de Riesgo , Satisfacción en el Trabajo , Modelos Logísticos
9.
EMBO J ; 43(15): 3090-3115, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38839992

RESUMEN

Drastic increases in myofiber number and size are essential to support vertebrate post-embryonic growth. However, the collective cellular behaviors that enable these increases have remained elusive. Here, we created the palmuscle myofiber tagging and tracking system for in toto monitoring of the growth and fates of ~5000 fast myofibers in developing zebrafish larvae. Through live tracking of individual myofibers within the same individuals over extended periods, we found that many larval myofibers readily dissolved during development, enabling the on-site addition of new and more myofibers. Remarkably, whole-body surveillance of multicolor-barcoded myofibers further unveiled a gradual yet extensive elimination of larval myofiber populations, resulting in near-total replacement by late juvenile stages. The subsequently emerging adult myofibers are not only long-lasting, but also morphologically and functionally distinct from the larval populations. Furthermore, we determined that the elimination-replacement process is dependent on and driven by the autophagy pathway. Altogether, we propose that the whole-body replacement of larval myofibers is an inherent yet previously unnoticed process driving organismic muscle growth during vertebrate post-embryonic development.


Asunto(s)
Larva , Pez Cebra , Animales , Pez Cebra/crecimiento & desarrollo , Larva/crecimiento & desarrollo , Desarrollo de Músculos , Autofagia , Fibras Musculares Esqueléticas/metabolismo , Fibras Musculares Esqueléticas/citología
11.
Comput Biol Chem ; 111: 108098, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38820799

RESUMEN

Cell-penetrating peptides have attracted much attention for their ability to break through cell membrane barriers, which can improve drug bioavailability, reduce side effects, and promote the development of gene therapy. Traditional wet-lab prediction methods are time-consuming and costly, and computational methods provide a short-time and low-cost alternative. Still, the accuracy and reliability need to be further improved. To solve this problem, this study proposes a feature fusion-based prediction model, where the protein pre-trained language models ProtBERT and ESM-2 are used as feature extractors, and the extracted features from both are fused to obtain a more comprehensive and effective feature representation, which is then predicted by linear mapping. Validated by many experiments on public datasets, the method has an AUC value as high as 0.983 and shows high accuracy and reliability in cell-penetrating peptide prediction.


Asunto(s)
Péptidos de Penetración Celular , Péptidos de Penetración Celular/química , Péptidos de Penetración Celular/metabolismo , Biología Computacional , Humanos
12.
World J Pediatr ; 2024 May 07.
Artículo en Inglés | MEDLINE | ID: mdl-38713366

RESUMEN

BACKGROUND: SARS-CoV-2 continues to mutate over time, and reports on children infected with Omicron BA.5 are limited. We aimed to analyze the specific symptoms of Omicron-infected children and to improve patient care. METHODS: We selected 315 consecutively hospitalized children with Omicron BA.5 and 16,744 non-Omicron-infected febrile children visiting the fever clinic at our hospital between December 8 and 30, 2022. Specific convulsions and body temperatures were compared between the two cohorts. We analyzed potential associations between convulsions and vaccination, and additionally evaluated the brain damage among severe Omicron-infected children. RESULTS: Convulsion rates (97.5% vs. 4.3%, P < 0.001) and frequencies (median: 2.0 vs. 1.6, P < 0.001) significantly differed between Omicron-infected and non-Omicron-infected febrile children. The body temperatures of Omicron-infected children were significantly higher during convulsions than when they were not convulsing and those of non-Omicron-infected febrile children during convulsions (median: 39.5 vs. 38.2 and 38.6 °C, both P < 0.001). In the three Omicron-subgroups, the temperature during convulsions was proportional to the percentage of patients and significantly differed ( P < 0.001), while not in the three non-Omicron-subgroups ( P = 0.244). The convulsion frequency was lower in the 55 vaccinated children compared to the 260 non-vaccinated children (average: 1.8 vs. 2.1, P < 0.001). The vaccination dose and convulsion frequency in Omicron-infected children were significantly correlated ( P < 0.001). Fifteen of the 112 severe Omicron cases had brain damage. CONCLUSIONS: Omicron-infected children experience higher body temperatures and frequencies during convulsions than those of non-Omicron-infected febrile children. We additionally found evidence of brain damage caused by infection with omicron BA.5. Vaccination and prompt fever reduction may relieve symptoms.

13.
Front Surg ; 11: 1367059, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38712336

RESUMEN

Epithelioid hemangioendothelioma (EHE) is a rare low-grade malignant vascular tumor. It mainly occurs in the liver, lungs, bones, and other parts of the body. Reports of epithelioid hemangioendothelioma in the parotid gland are rare in both domestic and international literature. Here, we present a case report of a parotid gland epithelioid hemangioendothelioma, including its complete clinical course and imaging findings, to improve the diagnosis and treatment of this unusual disease. Case presentation: The patient, a 75-year-old female, presented with a swelling around the right ear for 2 months and pain for 20 days. Enhanced MRI of the parotid gland revealed a well-defined, round mass with homogeneous signal intensity. The mass showed low signal intensity on T1-weighted imaging, high signal intensity on T2-weighted imaging, nodular low signal intensity within, significant high signal intensity on DWI sequence, low signal intensity on ADC sequence, and heterogeneous enhancement in the arterial phase after intravenous injection of Gd-DTPA. Nodular non-enhancing low signal intensity was observed internally, and slight clearance was seen in the venous phase. The initial diagnosis before surgery was a benign lesion, but after histopathological and immunohistochemical examination, it was confirmed as epithelioid hemangioendothelioma. Intervention: Complete tumor resection was performed. Results: The patient experienced a favorable recovery, with meticulous follow-up conducted for up to 1 year revealing no signs of recurrence or metastasis. Continued patient surveillance is ongoing to substantiate and validate the long-term efficacy of the treatment. Conclusion: Due to the extreme rarity of parotid gland epithelioid hemangioendothelioma, it often leads to a high misdiagnosis rate. The most common misdiagnosis is salivary gland lymphoma, followed by epithelioid hemangiosarcoma. When the lesion is multifocal, fusiform, with internal necrosis, and shows punctate low signal intensity on T2-weighted imaging, significant enhancement in the arterial phase, particularly with more pronounced peripheral enhancement, and persistent enhancement in the venous and delayed phases, epithelioid hemangioendothelioma should be considered. However, the current clinical diagnosis of epithelioid hemangioendothelioma still primarily relies on immunohistochemical methods.

14.
J Bioinform Comput Biol ; 22(2): 2450006, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38812466

RESUMEN

Molecular recognition features (MoRFs) are particular functional segments of disordered proteins, which play crucial roles in regulating the phase transition of membrane-less organelles and frequently serve as central sites in cellular interaction networks. As the association between disordered proteins and severe diseases continues to be discovered, identifying MoRFs has gained growing significance. Due to the limited number of experimentally validated MoRFs, the performance of existing MoRF's prediction algorithms is not good enough and still needs to be improved. In this research, we present a model named MoRF_ESM, which utilizes deep-learning protein representations to predict MoRFs in disordered proteins. This approach employs a pretrained ESM-2 protein language model to generate embedding representations of residues in the form of attention map matrices. These representations are combined with a self-learned TextCNN model for feature extraction and prediction. In addition, an averaging step was incorporated at the end of the MoRF_ESM model to refine the output and generate final prediction results. In comparison to other impressive methods on benchmark datasets, the MoRF_ESM approach demonstrates state-of-the-art performance, achieving [Formula: see text] higher AUC than other methods when tested on TEST1 and achieving [Formula: see text] higher AUC than other methods when tested on TEST2. These results imply that the combination of ESM-2 and TextCNN can effectively extract deep evolutionary features related to protein structure and function, along with capturing shallow pattern features located in protein sequences, and is well qualified for the prediction task of MoRFs. Given that ESM-2 is a highly versatile protein language model, the methodology proposed in this study can be readily applied to other tasks involving the classification of protein sequences.


Asunto(s)
Algoritmos , Biología Computacional , Aprendizaje Profundo , Proteínas Intrínsecamente Desordenadas , Biología Computacional/métodos , Proteínas Intrínsecamente Desordenadas/química , Proteínas Intrínsecamente Desordenadas/metabolismo , Bases de Datos de Proteínas/estadística & datos numéricos
15.
J Colloid Interface Sci ; 669: 877-885, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38749226

RESUMEN

Recently, due to high price, resource shortage and unstable supply of cobalt, the development of low-cost cobalt-free Ni-rich cathodes has attracted extensive attention with the ever-increasing lithium-ion batteries (LIBs) industry. Selecting cost-effective elements to replace cobalt in Ni-rich cathodes is urgent. However, the principle of structural design of Ni-rich cathode remains unclear, hampering the selection of alternative elements. Herein, the cobalt-free cathodes of LiNi0.95Mg0.05O2 (NiMg) and LiNi0.95Mn0.05O2 (NiMn) are designed as alternatives to LiNi0.96Co0.04O2 (NiCo). NiMg has comparable cycle stability with NiCo, while NiMn has inferior cycle performance. Reverse Monte Carlo modelling was used to generate structural model and uncover local structure by fitting pair distribution function. It reveals Mn causes more severe Jahn-Teller distortions and disordered lattice host framework (Ni0.95M0.05O2, M = Co/Mn/Mg) than Co and Mg due to the strong size effect and coulomb interactions of Mn in Ni0.95Mn0.05O2 layer. The outstanding cycle stability of NiMg and NiCo originates from the ordered lattice host frameworks, which relieve stress and inhibit particle breakage during cycle. Meanwhile, the ordered lattice host framework induced guest Li+ disordering reduces Li+ diffusion energy barrier, improving the rate capability. This study provides a new perspective for the structural design of cobalt-free Ni-rich cathodes.

16.
Front Neurol ; 15: 1304524, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38585365

RESUMEN

Background: Endovascular treatment of severe intracranial atherosclerotic stenosis (ICAS) using coronary drug-eluting stents (DESs) significantly reduces the risk of in-stent restenosis (ISR) and stroke recurrence. However, there are few reports regarding the treatment of ICAS with intracranial dedicated DES. Herein, we present our experience with the feasibility, safety, and medium-term follow-up outcomes of a novel intracranial DES, named NOVA stent, in patients with symptomatic severe ICAS (≥70%). Methods: From December 2021 to May 2022, patients with symptomatic severe ICAS who underwent implantation of the NOVA stent in our institution were retrospectively analyzed for procedural results, perioperative complications, imaging and clinical follow-up outcomes. Results: Twenty-four patients, 16 (66.7%) with anterior circulation lesions and 8 (33.3%) with posterior circulation lesions, were enrolled. All patients with intracranial ICA (n = 6), middle cerebral artery (n = 10), basilar artery (n = 3), intracranial vertebral artery (n = 3), and the vertebrobasilar junction (n = 2) stenosis were treated successfully using NOVA stents. The severity of stenosis ranged from 75 to 96% (mean 85.9%) before treatment and this was reduced to 0 to 20% (mean 8.6%) immediately after stent placement. Symptomatic distal embolism occurred in one case; however, there were no other perioperative complications. The mean follow-up duration was 12.2 ± 1.06 months. No symptomatic ischemic events occurred during follow-up. Follow-up cerebral angiography was performed in 22 of 24 patients (91.7%), and significant ISR occurred in one patient (4.2%). Conclusion: Our results demonstrate that implantation of the novel intracranial DES NOVA in severe ICAS is feasible, safe, and effective in selected cases, reducing the incidence of ISR, and showing excellent midterm clinical outcomes, providing a promising option for ICAS treatment.

17.
Am J Ophthalmol ; 266: 10-16, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-38615831

RESUMEN

PURPOSE: To evaluate changes in retinal microvascular density and choroidal vascularity in patients with retinoblastoma (RB) after intra-arterial chemotherapy (IAC). DESIGN: Retrospective clinical cohort study. METHODS: This study included 12 unilateral RB eyes treated with IAC (RB tumor), 12 contralateral normal eyes (RB fellow), and 12 healthy controls. The macular retinal thickness and retinal microvascular structure, including the foveal avascular zone (FAZ) area, macular and peripapillary superficial vessel density (SVD), and deep vessel density (DVD), were measured by optical coherence tomography angiography (OCTA). The choroidal thickness (ChT) and choroidal vascularity, including total choroidal area (TCA), luminal area (LA), stromal area (SA), and choroidal vascularity index (CVI), were measured by spectral-domain optical coherence tomography (SD-OCT). A comparison among the 3 groups was conducted, and the correlations among the parameters were analyzed. RESULTS: Among the 3 cohorts, the foveal retinal thickness, SVD, DVD, ChT, TCA, LA, SA, and CVI were significantly lower in RB tumor compared to RB fellow and the control eyes (all P < .01). There were no significant differences in the parameters between the contralateral and control eyes. The correlation analyses indicated a significant negative correlation between the total melphalan dose and foveal and parafoveal DVD, ChT, and LA. CONCLUSIONS: The retinal microvascular density and choroidal vascularity were lower in unilateral RB treated with IAC, and seemed to be related to the total melphalan dose. There were no measurable changes in the contralateral eyes.


Asunto(s)
Coroides , Angiografía con Fluoresceína , Infusiones Intraarteriales , Melfalán , Microvasos , Neoplasias de la Retina , Vasos Retinianos , Retinoblastoma , Tomografía de Coherencia Óptica , Humanos , Retinoblastoma/tratamiento farmacológico , Neoplasias de la Retina/tratamiento farmacológico , Estudios Retrospectivos , Tomografía de Coherencia Óptica/métodos , Coroides/irrigación sanguínea , Masculino , Femenino , Vasos Retinianos/diagnóstico por imagen , Vasos Retinianos/efectos de los fármacos , Angiografía con Fluoresceína/métodos , Preescolar , Melfalán/administración & dosificación , Microvasos/efectos de los fármacos , Lactante , Niño , Antineoplásicos Alquilantes/administración & dosificación , Densidad Microvascular , Agudeza Visual/fisiología
18.
ACS Appl Mater Interfaces ; 16(6): 7070-7079, 2024 Feb 14.
Artículo en Inglés | MEDLINE | ID: mdl-38308393

RESUMEN

Na4Fe3(PO4)2(P2O7) (NFPP) is regarded as a promising cathode material for sodium-ion batteries (SIBs) owing to its low cost, easy manufacture, environmental purity, high structural stability, unique three-dimensional Na-ion diffusion channels, and appropriate working voltage. However, for NFPP, the low conductivity of electrons and ions limits their capacity and power density. The generation of NaFeP2O7 and NaFePO4 inhibits the diffusion of sodium ions and reduces reversible capacity and rate performance during the manufacturing process in synthesis methods. Herein, we report an entropy-driven approach to enhance the electronic conductivity and, concurrently, phase purity of NFPP as the superior cathode in sodium-ion batteries. This approach was realized via Ti ions substituting different ratios of Fe-occupied sites in the NFPP lattice (denoted as NTFPP-X, T is the Ti in the lattice, X is the ratio of Ti-substitution) with the configurational entropic increment of the lattice structures from 0.68 R to 0.79 R. Specifically, 5% Ti-substituted lattice (NTFPP-0.05) inducing entropic augmentation not only improves the electronic conductivity from 7.1 × 10-2 S/m to 8.6 × 10-2 S/m but also generates the pure-phase of NFPP (suppressing the impure phases of the NaFeP2O7 and NaFePO4) of the lattice structure, which is validated by a series of characterizations, including powder X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT). Benefiting from the Ti replacement in the lattice, the optimal NTFPP-0.05 composite shows a high first discharge capacity (118.5 mAh g-1 at 0.1 C), superior rate performance (70.5 mAh g-1 at 10 C), and excellent long cycling life (1200 cycles at 10 C with capacity retention of 86.9%). This research proposes a new entropy-driven approach to improve the electrochemical performance of NFPP and reports a low-cost, ultrastable, and high-rate cathode material of NTFPP-0.05 for SIBs.

19.
Patient Educ Couns ; 123: 108206, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38422949

RESUMEN

OBJECTIVE: To examine the effectiveness of health education and counseling on the stages of change, decisional balance, and smoking cessations elf-efficacy in smokers with no intention of quitting. METHODS: A prospective self-controlled design was conducted between December 2020 and December 2022. The research period was divided into a control stage (first to fourth weeks) and an experimental stage (fifth to eighth weeks). Patients with coronary artery disease (CAD) and habitually smoked were recruited. Pearson correlation and a one-factor repeated-measurement analysis were performed to assess the effectiveness of the intervention. RESULTS: In total, 108 male CAD patients with a mean age of 58.1 years were recruited. After 4 weeks of the intervention, 55 (51%) exhibited behavior change (X 2 = 18.03, p = .001). The decisional balance and smoking cessation self-efficacy scores significantly improved in the experimental stage. No significant differences were observed in the control stage. CONCLUSIONS: Four weeks of health education and counseling could effectively improve participants' stage of change, decisional balance, and smoking cessation self-efficacy. PRACTICE IMPLICATION: Healthcare professionals can play key roles in helping CAD patients successfully quit smoking through individual education and counseling.


Asunto(s)
Cese del Hábito de Fumar , Humanos , Masculino , Persona de Mediana Edad , Cese del Hábito de Fumar/psicología , Estudios Prospectivos , Modelo Transteórico , Consejo , Educación en Salud , Atención a la Salud
20.
Vet Microbiol ; 291: 110012, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38387235

RESUMEN

The ubiquitin-binding enzyme E2J1 is located on the endoplasmic reticulum membrane. It plays a role in transport throughout the process of ubiquitination. In mammals, UBE2J1 can promote RNA virus replication. However, the biological function of chicken UBE2J1 is unclear. In this study, chicken UBE2J1 was cloned for the first time, and UBE2J1 overexpression and shRNA knockdown plasmids were constructed. In chicken embryo fibroblasts, overexpression of UBE2J1 promoted the replication of subtype A avian leukosis virus, while knockdown of UBE2J1 inhibited the replication of ALV-A virus. In addition, we divided virus replication into virus adsorption and invasion into DF-1 cells, synthesis of proviral DNA, and release of viral particles. UBE2J1 promoted the replication of ALV-A virus by promoting the synthesis of proviral DNA. This result was caused by UBE2J1 inhibiting the production of interferon by inhibiting the STAT3/IRF1 pathway. We mutated ser at position 184 of UBE2J1 to Gly and found that this site plays a role as the phosphorylation site of UBE2J1. We confirmed that UBE2J1 promotes ALV-A replication in chicken embryo fibroblasts by inhibiting the STAT3/IRF1 pathway. This study provides new ideas and insights into ubiquitin-related proteins and antiviral immunity.


Asunto(s)
Virus de la Leucosis Aviar , Leucosis Aviar , Animales , Embrión de Pollo , Virus de la Leucosis Aviar/genética , Virus de la Leucosis Aviar/metabolismo , Pollos , Mamíferos , Provirus , Transducción de Señal , Ubiquitinas , Factor de Transcripción STAT3/metabolismo , Factores Reguladores del Interferón/metabolismo , Enzimas Ubiquitina-Conjugadoras/metabolismo
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