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1.
Small ; : e2312134, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38618938

RESUMEN

Phase change materials (PCMs) present a dual thermal management functionality through intrinsic thermal energy storage (TES) capabilities while maintaining a constant temperature. However, the practical application of PCMs encounters challenges, primarily stemming from their low thermal conductivity and shape-stability issues. Despite significant progress in the development of solid-solid PCMs, which offer superior shape-stability compared to their solid-liquid counterparts, they compromise TES capacity. Herein, a universal phase engineering strategy is introduced to address these challenges. The approach involves compositing solid-liquid PCM with a particulate-based conductive matrix followed by surface reaction to form a solid-solid PCM shell, resulting in a core-shell composite with enhanced thermal conductivity, high thermal storage capacity, and optimal shape-stability. The core-shell structure designed in this manner not only encapsulates the energy-rich solid-liquid PCM core but also significantly enhances TES capacity by up to 52% compared to solid-solid PCM counterparts. The phase-engineered high-performance PCMs exhibit excellent thermal management capabilities by reducing battery cell temperature by 15 °C and demonstrating durable solar-thermal-electric power generation under cloudy or no sunshine conditions. This proposed strategy holds promise for extending to other functional PCMs, offering a compelling avenue for the development of high-performance PCMs for thermal energy applications.

2.
Sci Rep ; 14(1): 7522, 2024 03 29.
Artículo en Inglés | MEDLINE | ID: mdl-38553594

RESUMEN

To investigate the safety and efficacy of the neoadjuvant chemoradiotherapy (NCRT) followed by neoadjuvant consolidation chemotherapy (NCCT) and surgery for locally advanced gastric cancer (GC) or gastroesophageal junction (GEJ) adenocarcinoma. Patients diagnosed as locally advanced GC or Siewert II/III GEJ adenocarcinoma with clinical stage T3-4 and/or N positive were prospectively enrolled. Patients underwent NCRT (45 Gy/25 fractions) with concurrent S-1, followed by NCCT (4 to 6 cycles of the SOX regimen) 2 to 4 weeks after NCRT. Gastric cancer radical resection with D2 lymph node dissection was performed 4 to 6 weeks after the total neoadjuvant therapy. The study was conducted from November 2019 to January 2023, enrolling a total of 46 patients. During the NCRT, all patients completed the treatment without dose reduction or delay. During the NCCT, 32 patients (69.6%) completed at least 4 cycles of chemotherapy. Grade 3 or higher adverse events in NCRT (5 cases) were non-hematological. During the course of NCCT, a notable occurrence of hematological toxicities was observed, with grade 3 or higher leukopenia (9.7%) and thrombocytopenia (12.2%) being experienced. A total of 28 patients (60.9%) underwent surgery, achieving R0 resection in all cases. A significant proportion of cases (71.4%) exhibited pathological downstaging to ypT0-2, while 10 patients (35.7%) demonstrated a pathologic complete response (pCR). The total neoadjuvant therapy comprising NCRT followed by NCCT and surgery demonstrates a low severe adverse reactions and promising efficacy, which could be considered as a viable treatment for locally advanced GC or GEJ adenocarcinoma.Trial registration: Clinicaltrials.gov (registration number: NCT04062058); the full date of first trial registration was 20/08/2019.


Asunto(s)
Adenocarcinoma , Neoplasias Esofágicas , Neoplasias Gástricas , Humanos , Terapia Neoadyuvante , Neoplasias Gástricas/terapia , Neoplasias Gástricas/patología , Estudios Prospectivos , Quimioradioterapia , Neoplasias Esofágicas/terapia , Neoplasias Esofágicas/patología , Adenocarcinoma/terapia , Adenocarcinoma/patología , Unión Esofagogástrica/patología , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Resultado del Tratamiento
3.
Nat Commun ; 15(1): 1045, 2024 Feb 05.
Artículo en Inglés | MEDLINE | ID: mdl-38316778

RESUMEN

G-quadruplexes (G4s) can recruit transcription factors to activate gene expression, but detailed mechanisms remain enigmatic. Here, we demonstrate that G4s in the CCND1 promoter propel the motility in MAZ phase-separated condensates and subsequently activate CCND1 transcription. Zinc finger (ZF) 2 of MAZ is a responsible for G4 binding, while ZF3-5, but not a highly disordered region, is critical for MAZ condensation. MAZ nuclear puncta overlaps with signals of G4s and various coactivators including BRD4, MED1, CDK9 and active RNA polymerase II, as well as gene activation histone markers. MAZ mutants lacking either G4 binding or phase separation ability did not form nuclear puncta, and showed deficiencies in promoting hepatocellular carcinoma cell proliferation and xenograft tumor formation. Overall, we unveiled that G4s recruit MAZ to the CCND1 promoter and facilitate the motility in MAZ condensates that compartmentalize coactivators to activate CCND1 expression and subsequently exacerbate hepatocarcinogenesis.


Asunto(s)
Ciclina D1 , Proteínas de Unión al ADN , G-Cuádruplex , Factores de Transcripción , Humanos , Proteínas que Contienen Bromodominio , Proteínas de Ciclo Celular/genética , Proteínas de Ciclo Celular/metabolismo , Ciclina D1/genética , Ciclina D1/metabolismo , Proteínas de Unión al ADN/metabolismo , Proteínas Nucleares/metabolismo , Factores de Transcripción/metabolismo , Dedos de Zinc/genética
4.
Cancer Lett ; 589: 216641, 2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38232812

RESUMEN

Neoadjuvant chemoradiotherapy (NCRT) is widely used for locally advanced rectal cancer (LARC). This study aimed to conduct an effective model to predict NCRT sensitivity and provide guidance for clinical treatment. Biomarkers for NCRT sensitivity were identified by applying transcriptome profiles using logistic regression and subsequently screened out by Spearman correlation analysis and four machine learning algorithms. A deep neural network (DNN) predictor was constructed by using in-house dataset and validated in two independent datasets. Additionally, a web-based program was developed. Wnt/ß-catenin signaling and linoleic acid metabolism (LA) pathways were associated with NCRT sensitivity and prognosis in LARC, antagonistically. A DNN predictor with an 18-gene signature was conducted within in-house datasets. In two validation cohorts, area under ROC curve (AUC) achieved 0.706 and 0.897. The DNN subtypes were significantly associated with NCRT sensitivity, survival status et al. Moreover, NK and cytotoxic T cells were observed contribution to NCRT sensitivity while regulatory T, myeloid-derived suppressor cells and dysfunction of CD4 T effector memory cells could impede NCRT response. A DNN predictor could predict NCRT sensitivity in LARC and stratify LARC patients with different clinical and immunity characteristic.


Asunto(s)
Neoplasias del Recto , Humanos , Resultado del Tratamiento , Neoplasias del Recto/genética , Neoplasias del Recto/terapia , Neoplasias del Recto/metabolismo , Terapia Neoadyuvante , Quimioradioterapia , Redes Neurales de la Computación
5.
Nat Ecol Evol ; 8(3): 552-563, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38238436

RESUMEN

The geographic expansion of Homo sapiens populations into southeastern Europe occurred by ∼47,000 years ago (∼47 ka), marked by Initial Upper Palaeolithic (IUP) technology. H. sapiens was present in western Siberia by ∼45 ka, and IUP industries indicate early entries by ∼50 ka in the Russian Altai and 46-45 ka in northern Mongolia. H. sapiens was in northeastern Asia by ∼40 ka, with a single IUP site in China dating to 43-41 ka. Here we describe an IUP assemblage from Shiyu in northern China, dating to ∼45 ka. Shiyu contains a stone tool assemblage produced by Levallois and Volumetric Blade Reduction methods, the long-distance transfer of obsidian from sources in China and the Russian Far East (800-1,000 km away), increased hunting skills denoted by the selective culling of adult equids and the recovery of tanged and hafted projectile points with evidence of impact fractures, and the presence of a worked bone tool and a shaped graphite disc. Shiyu exhibits a set of advanced cultural behaviours, and together with the recovery of a now-lost human cranial bone, the record supports an expansion of H. sapiens into eastern Asia by about 45 ka.


Asunto(s)
Fósiles , Cráneo , Humanos , China , Europa (Continente) , Antropología Cultural
6.
J Med Internet Res ; 26: e45020, 2024 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-38180795

RESUMEN

BACKGROUND: Telemedicine has demonstrated its potential in alleviating the unbalanced distribution of medical resources across different regions. Henan, a province in China with a population of approximately 100 million, is especially affected by a health care divide. The province has taken a proactive step by establishing a regional collaborative platform for telemedicine services provided by top-tier provincial hospitals. OBJECTIVE: We aim to identify the key factors that influence the current operationalization and effectiveness of telemedicine services in Henan province. The insights gained from this study will serve as valuable references for enhancing the efficient operation of telemedicine platforms in low- and middle-income regions. METHODS: We analyzed service reports from the performance management system of telemedicine services in Henan province throughout 2020. Using descriptive statistics and graphical methods, we examined key influencing factors, such as management competency; device configuration; and hospital capability, capacity, and service efficacy, across hospitals at 2 different tiers. In addition, we used generalized linear models and multiple linear regression models to identify key operational factors that significantly affect the service volume and efficacy of 2 major telemedicine services, namely teleconsultation and tele-education. RESULTS: Among the 89 tier 3 hospitals and 97 tier 2 hospitals connected to the collaborative telemedicine platform, 65 (73%) and 55 (57%), respectively, have established standardized management procedures for telemedicine services. As the primary delivery method for telemedicine services, 90% (80/89) of the tier 3 hospitals and 94% (91/97) of the tier 2 hospitals host videoconferencing consultations through professional hardware terminals rather than generic computers. Teleconsultation is the dominant service type, with an average annual service volume per institution of 173 (IQR 37-372) and 60 (IQR 14-271) teleconsultations for tier 3 and tier 2 hospitals, respectively. Key factors influencing the service volume at each hospital include available funding, management competency, the number of connected upper tiers, and the number of professional staff. After receiving teleconsultations from tier 3 (65/89, 73%) and tier 2 (61/97, 63%) hospitals, patients reported significant improvements in their medical conditions. In addition, we observed that service efficacy is positively influenced by management competency, financial incentives, the number of connected upper or lower tiers, and the involvement of participating medical professionals. CONCLUSIONS: Telemedicine has become increasingly popular in Henan province, with a notable focus on teleconsultation and tele-education services. Despite its popularity, many medical institutions, especially tier 2 hospitals, face challenges related to management competency. In addition to enhancing the effectiveness of existing telemedicine services, health care decision-makers in Henan province and other low- and middle-income regions should consider expanding the service categories, such as including remote emergency care and telesurgery, which have promise in addressing crucial health care needs in these regions.


Asunto(s)
Consulta Remota , Telemedicina , Humanos , Estudios Transversales , Proyectos de Investigación , China
7.
BMC Bioinformatics ; 24(1): 481, 2023 Dec 16.
Artículo en Inglés | MEDLINE | ID: mdl-38104057

RESUMEN

BACKGROUND: The rapid emergence of single-cell RNA-seq (scRNA-seq) data presents remarkable opportunities for broad investigations through integration analyses. However, most integration models are black boxes that lack interpretability or are hard to train. RESULTS: To address the above issues, we propose scInterpreter, a deep learning-based interpretable model. scInterpreter substantially outperforms other state-of-the-art (SOTA) models in multiple benchmark datasets. In addition, scInterpreter is extensible and can integrate and annotate atlas scRNA-seq data. We evaluated the robustness of scInterpreter in a variety of situations. Through comparison experiments, we found that with a knowledge prior, the training process can be significantly accelerated. Finally, we conducted interpretability analysis for each dimension (pathway) of cell representation in the embedding space. CONCLUSIONS: The results showed that the cell representations obtained by scInterpreter are full of biological significance. Through weight sorting, we found several new genes related to pathways in PBMC dataset. In general, scInterpreter is an effective and interpretable integration tool. It is expected that scInterpreter will bring great convenience to the study of single-cell transcriptomics.


Asunto(s)
Leucocitos Mononucleares , Análisis de Expresión Génica de una Sola Célula , Análisis de Secuencia de ARN/métodos , Leucocitos Mononucleares/metabolismo , Análisis de la Célula Individual/métodos , Perfilación de la Expresión Génica/métodos , Análisis por Conglomerados
8.
BMC Med Inform Decis Mak ; 23(1): 269, 2023 11 21.
Artículo en Inglés | MEDLINE | ID: mdl-37990204

RESUMEN

BACKGROUND: The widespread adoption of telehealth services necessitates accurate online department selection based on patient medical records, a task requiring significant medical knowledge. Incorrect triage results in considerable time wastage for both patients and medical professionals. To address this, we propose an intelligent triage model based on a Bidirectional Long Short-Term Memory (Bi-LSTM) neural network with character embedding to enhance the efficiency and capacity of telehealth services. METHODS: We gathered a 1.3 GB medical dataset comprising 200,000 records, each including medical history, physical examination data, and other pertinent information found on the electronic medical record homepage. Following data preprocessing, a clinical corpus was established to train character embeddings with a medical context. These character embeddings were then utilized to extract features from patient chief  complaints, and a 2-layer Bi-LSTM neural network was trained to categorize these complaints, enabling intelligent triage for telehealth services. RESULTS: 60,000 chief complaint-department data pairs were extracted from clinical corpus and divided into the training, validation, and test sets of 42,000, 9,000, and 9,000, respectively. The character embedding based Bi-LSTM neural network achieved a macro-precision of 85.50% and an F1 score of 85.45%. CONCLUSION: The telehealth triage model developed in this study demonstrates strong implementation outcomes and significantly improves the efficiency and capacity of telehealth services. Character embedding outperforms word embedding, and future work will incorporate additional features such as patient age and gender into the chief complaint feature to future enhance model performance.


Asunto(s)
Redes Neurales de la Computación , Triaje , Humanos , Registros Electrónicos de Salud
9.
Int J Med Inform ; 178: 105202, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37651778

RESUMEN

OBJECTIVE: This study aims to evaluate satisfaction and service effectiveness of primary hospital physicians participating in the National Telemedicine Center of China during the COVID-19 period, and to identify potential improvement suggestions. METHODS: An online questionnaire was developed to assess the impact and satisfaction of teleconsultation services. A teleconsultation manager from each of the 98 hospitals randomly invited the medical staff involved in teleconsultation to complete the online questionnaire. RESULTS: A total of 379 health care professionals responded to the online questionnaire, with a mean age of 36.74 years. Out of these respondents, 95.5% had a positive attitude towards teleconsultation during the epidemic. Only 6.6% believed that teleconsultation systems were not useful in preventing and controlling the COVID-19 pandemic. Those respondents who were very satisfied with teleconsultation participated in it 1.81 times per week averagely. Factors related to satisfaction included weekly participation frequency(P=.003), patient data quality(P=.023), equipment operation proficiency(P=.006), audio and video clarity and smoothness(P=.004, P=.020), environmental satisfaction(P=.032), and incentive measures of title promotion(P=.003). The main challenges in teleconsultation were the lack of understanding of medical staff and the public, insufficiently advanced software and hardware equipment, and the lack of optimization of service processes. CONCLUSIONS: Primary hospital doctors demonstrate high satisfaction levels, suggesting that teleconsultation could be an effective tool for patients seeking medical care in areas under lockdown during the COVID-19 pandemic. The primary barriers to teleconsultation include lack of public understanding and unadvanced equipment. These findings should inform future efforts to establish regional telemedicine programs in the post-COVID-19 era.


Asunto(s)
COVID-19 , Consulta Remota , Humanos , Adulto , COVID-19/epidemiología , Pandemias , Control de Enfermedades Transmisibles , Personal de Salud
10.
Commun Biol ; 6(1): 625, 2023 06 10.
Artículo en Inglés | MEDLINE | ID: mdl-37301913

RESUMEN

G-quadruplexes (G4s) regulate DNA replication and gene transcription, and are enriched in promoters without fully appreciated functional relevance. Here we show high selection pressure on putative G4 (pG4) forming sequences in promoters through investigating genetic and genomic data. Analyses of 76,156 whole-genome sequences reveal that G-tracts and connecting loops in promoter pG4s display lower or higher allele frequencies, respectively, than pG4-flanking regions, and central guanines (Gs) in G-tracts show higher selection pressure than other Gs. Additionally, pG4-promoters produce over 72.4% of transcripts, and promoter G4-containing genes are expressed at relatively high levels. Most genes repressed by TMPyP4, a G4-ligand, regulate epigenetic processes, and promoter G4s are enriched with gene activation histone marks, chromatin remodeler and transcription factor binding sites. Consistently, cis-expression quantitative trait loci (cis-eQTLs) are enriched in promoter pG4s and their G-tracts. Overall, our study demonstrates selective constraint of promoter G4s and reinforces their stimulative role in gene expression.


Asunto(s)
G-Cuádruplex , Activación Transcripcional , Regiones Promotoras Genéticas , Genoma , Genómica
11.
Cancer Med ; 12(10): 11438-11450, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-37014817

RESUMEN

PURPOSE: Distant metastasis (DM) and neoadjuvant treatment response prediction remain critical challenges in the management of locally advanced rectal cancer (LARC). The aim of this study was to investigate the clinical relevance of viable circulating tumor cells (CTCs) for DM or response in patients with LARC in a neoadjuvant setting. METHODS: The detection of viable CTCs at different stages of treatment was planned for consecutive patients from a prospective trial. The Kaplan-Meier method, Cox proportional hazards model, and logistic regression model were utilized to analyze factors associated with DM or pathological complete response (pCR) and clinical complete response (cCR). RESULTS: Between December 2016 and July 2018, peripheral blood samples from 83 patients were collected before any treatment (median follow-up time, 49.3 months). CTCs were present in 76 of 83 patients (91.6%) at baseline, and more than three CTCs detected in the blood sample was considered high risk. Only the CTC risk group was significantly associated with 3-year metastasis-free survival (MFS) (high risk vs. low risk, 57.1% (95% CI, 41.6-72.6) vs. 78.3% (95% CI, 65.8-90.8), p = 0.018, log-rank test). When all the important variables were entered into the Cox model, the CTC risk group remained the only significant independent factor for DM (hazard ratio (HR), 2.74; 95% CI, 1.17-6.45, p = 0.021). The pCR and continuous cCR rates were higher in patients with a decreased number of CTCs of more than one after radiotherapy (HR, 4.00; 95% CI, 1.09-14.71, P = 0.037). CONCLUSIONS: The dynamic detection of viable CTCs may strengthen pretreatment risk assessment and postradiotherapy decision making for LARC. This observation requires further validation in a prospective study.


Asunto(s)
Células Neoplásicas Circulantes , Neoplasias del Recto , Humanos , Células Neoplásicas Circulantes/patología , Terapia Neoadyuvante , Estudios Prospectivos , Pronóstico , Neoplasias del Recto/patología
12.
Sheng Wu Gong Cheng Xue Bao ; 39(2): 780-789, 2023 Feb 25.
Artículo en Chino | MEDLINE | ID: mdl-36847105

RESUMEN

Biochemistry and Molecular Biology are the cornerstone courses of talent training in the field of life science. Taking these course as an example, this study explored reconstructing the knowledge framework, developing teaching cases, sharing teaching resources, innovating teaching means and establishing ideological education patterns. Supported by the scientific research achievements with discipline characteristics and online teaching platform, this research explored and practiced an integrated curriculum reform mode. This mode is guided by scientific research and education, based on the course development, and driven by communication and cooperation. A shared space of "exchange, practice, openness and informatization" was developed to achieve free and independent integration of undergraduate and graduate teaching motivated by learning knowledge, resulting in an effective student training.


Asunto(s)
Curriculum , Estudiantes , Humanos , Aprendizaje , Biología Molecular/educación , Bioquímica/educación
13.
Cells ; 12(2)2023 01 04.
Artículo en Inglés | MEDLINE | ID: mdl-36672157

RESUMEN

Polydatin (PD) is a natural compound with anticancer activities, but the underlying mechanisms remain largely unclear. To understand how PD inhibited hepatocellular carcinoma (HCC), we studied PD treatments in HCC HepG2 and SK-HEP1 cells, and normal liver HL-7702 cells. PD selectively blocked the proliferation of HCC cells but showed low toxicity in normal cells, while the effects of doxorubicin (DOX) and cisplatin (DDP) on HCC and normal liver cells were opposite. In the cotreatment studies, PD synergistically improved the inhibitory activities of DOX and DDP in HCC cells but alleviated their toxicity in HL-7702 cells. Furthermore, RNA-seq studies of PD-treated HepG2 cells revealed multiple altered signaling pathways. We identified 1679 Differentially Expressed Genes (DEGs) with over a 2.0-fold change in response to PD treatment. Integrative analyses using the DEGs in PD-treated HepG2 cells and DEGs in a TCGA dataset of HCC patients revealed five PD-repressed DEGs regulating mitotic spindle midzone formation. The expression of these genes showed significantly positive correlation with poor clinical outcomes of HCC patients, suggesting that mitotic machinery was likely a primary target of PD. Our findings improve the understanding of PD's anticancer mechanisms and provide insights into developing effective clinical approaches in HCC therapies.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/metabolismo , Cisplatino/farmacología , Cisplatino/uso terapéutico , Neoplasias Hepáticas/metabolismo , Línea Celular Tumoral , Doxorrubicina/farmacología , Doxorrubicina/uso terapéutico , Proliferación Celular
14.
Radiat Oncol ; 17(1): 214, 2022 Dec 28.
Artículo en Inglés | MEDLINE | ID: mdl-36578032

RESUMEN

PURPOSE: The safety of an MRI simulation-guided boost after short-course preoperative radiotherapy (SCPRT) for unresectable rectal cancer is assessed with a planned interim analysis. METHODS AND MATERIALS: Patients diagnosed with clinical stage T3-4 or regional lymph node-positive disease with positive mesorectal fascia or T4b disease evaluated by pelvic MRI were randomly assigned to the SCPRT-boost group (25 Gy in 5 fractions plus 4 Gy delivered to the gross tumor volume, followed by four cycles of chemotherapy) or preoperative chemoradiotherapy group (50 Gy in 25 fractions with concurrent chemotherapy). Then, patients received total mesorectal excision surgery after preoperative treatment. The primary endpoint was the R0 resection rate. The interim analysis was performed when 42 patients completed their assigned treatments. RESULTS: From October 2018 to November 2019, a total of 43 patients were enrolled, and 42 patients were included in the interim analysis. During preoperative therapy, grade 3 or above toxicities were observed in 10/21 (47.6%) patients in the experimental group, and 4/21 (19.0%) patients in the control group. A total of 17 (81.0%) and 13 (61.9%) patients in the experimental group and control group underwent surgery, respectively. Overall, 65.1% of the patients achieved R0 resection in the intention-to-treat analysis. Surgery-related adverse complications were observed in 2 patients (11.8%) in the experimental group and 1 patient (7.7%) in the control group. CONCLUSION: Our results show that the toxicity of an MRI simulation-guided boost after SCPRT for unresectable rectal cancer is acceptable. Thus, this clinical trial will be continued as planned.


Asunto(s)
Imagen por Resonancia Magnética , Neoplasias del Recto , Humanos , Quimioradioterapia , Imagen por Resonancia Magnética/efectos adversos , Terapia Neoadyuvante/efectos adversos , Estadificación de Neoplasias , Neoplasias del Recto/diagnóstico por imagen , Neoplasias del Recto/radioterapia , Neoplasias del Recto/cirugía
15.
World J Gastrointest Oncol ; 14(8): 1540-1551, 2022 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-36160743

RESUMEN

BACKGROUND: For Siewert type II/III adenocarcinoma of gastroesophageal junction (AGE), the efficacy of adjuvant chemoradiotherapy (CRT) after D2/R0 resection remains uncertain. AIM: To determine whether CRT was superior to chemotherapy (CT) alone after D2/R0 resection for locally advanced Siewert type II/III AGE. METHODS: We identified 316 locally advanced Siewert type II/III AGE patients who were treated with D2/R0 resection at National Cancer Center from 2011 to 2018. 57 patients received adjuvant CRT and 259 patients received adjuvant CT. We followed patients for overall survival (OS), relapse-free survival, and recurrence pattern. RESULTS: Five-year OS rates of the CRT group and the CT group for all patients were 66.7% and 41.9% (P = 0.010). Five-year OS rates of the CRT group and the CT group for Siewert type III AGE patients were 65.7% and 43.9% (P = 0.006). Among the 195 patients whose recurrence information could be obtained, 18 cases (34.6%) and 61 cases (42.7%) were diagnosed as recurrence in the CRT group and CT group, respectively. The local and regional recurrence rates in the CRT group were lower than that in the CT group (22.2% vs 24.6%, 27.8% vs 39.3%). Multivariable cox regression analysis showed that vascular invasion, nerve invasion, and adjuvant CRT were important prognostic factors for Siewert type III AGE. CONCLUSION: For locally advanced Siewert type III AGE, adjuvant CRT may prolong OS and reduce the regional recurrence rate.

16.
BMC Gastroenterol ; 22(1): 359, 2022 Jul 28.
Artículo en Inglés | MEDLINE | ID: mdl-35902798

RESUMEN

BACKGROUND: Gastric cancer ranks high in terms of morbidity and mortality worldwide. Multimodal therapy is therefore essential for locally advanced gastric cancer. Recent studies have demonstrated that both perioperative chemotherapy and neoadjuvant chemoradiotherapy can improve the prognosis of patients. However, the completion rate of chemotherapy after surgery remains low, which may affect survival. Thus, identifying the best way to combine radiotherapy, chemotherapy and surgery is important. The aim of this study was to explore the toxicity and efficacy of the total neoadjuvant therapy modality for locally advanced gastric cancer. METHODS: This study will be a prospective, multicenter, single-arm, phase II clinical trial. Patients diagnosed with locally advanced (stage cT3-4 and cN positive, AJCC 8th) gastric cancer and gastroesophageal junction adenocarcinoma will be enrolled. Patients will initially receive radiotherapy (95% planned target volume: 45 Gy/25 f) and concurrent chemotherapy (S-1: 40-60 mg twice a day) followed by six cycles of consolidated chemotherapy (SOX, consisting of S-1 and oxaliplatin) and surgery. The primary objective will assess pathological complete response; the secondary objectives will include toxicities assessing surgical complications, the tumor downstaging rate and the R0 resection rate. DISCUSSION: Investigation of total neoadjuvant therapy in gastric cancer is limited. The goal of this trial is to explore the efficacy and toxicity of total neoadjuvant therapy for locally advanced gastric cancer and gastroesophageal junction adenocarcinoma. TRIAL REGISTRATION: Clinicaltrials.gov (NCT04062058, August 20, 2019).


Asunto(s)
Adenocarcinoma , Neoplasias Gástricas , Adenocarcinoma/patología , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Ensayos Clínicos Fase II como Asunto , Neoplasias Esofágicas , Unión Esofagogástrica/patología , Humanos , Estudios Multicéntricos como Asunto , Terapia Neoadyuvante/métodos , Estudios Prospectivos , Neoplasias Gástricas/patología
17.
Front Oncol ; 12: 916937, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35903692

RESUMEN

Purpose: To compare the survival benefit in the adjuvant chemoradiotherapy (CRT) group and chemotherapy (CT) group for stage III gastric or gastroesophageal junction (GEJ) cancer after D2/R0 resection. Methods and Materials: From January 2011 to May 2018, 819 patients (CRT group: 215 patients, CT group: 604 patients) diagnosed as pathological stage III after D2/R0 resection were retrospectively collected and the survival and recurrence patterns were analyzed. The baseline characteristics were balanced based on propensity score matching (PSM). The survival benefit was compared between two groups using Kaplan-Meier analysis and Cox regression model. Results: The 5-year overall survival (OS) rate in the CRT group was significantly higher than that in the CT group whether before or after the PSM. The multivariate Cox regression analysis identified the significant poor OS in patients with advanced TNM stage (P < 0.001) and patients who did not receive the adjuvant CRT (P = 0.008). For the recurrence patterns, 85 (39.5%) patients in the CRT group and 300 (49.7%) patients in the CT group were diagnosed as recurrence (P = 0.011). The regional recurrence in the CRT group was less than that in the CT group (20.5% vs. 35.1%, P = 0.028). Conclusion: For patients diagnosed as stage III gastric cancer or gastroesophageal junction cancer, the addition of adjuvant chemoradiotherapy will significantly improve the overall survival and regional control.

18.
iScience ; 25(7): 104584, 2022 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-35784790

RESUMEN

Passive cooling of buildings has become increasingly important for green and low-carbon development, especially in the near decade where daytime radiative cooling technology (DRCT) has drawn attention with big breakthroughs. However, irresistibly importing heat from sunlight and surroundings results in notable temperature rise, thus limiting the cooling effect. Here, we report a radiative paint with latent heat storage capacity to store imported heat by coupling randomly-distributed phase-change materials (PCMs) based microcapsules with acrylic resin to enhance cooling performance. The bifunctional paint shows good performance in selected-suitable phase transition temperature, high enthalpy, high reflectivity in the sunlight region and strong emissivity in the atmospheric window region. The temperature measurements demonstrate that the paint possesses enhanced cooling performance of temperature drop and time buffering effect compared with the pure radiative cooling paint. This work offers the potential to broaden the applications of PCMs and DRCT for energy saving and environment protection.

19.
Int J Mol Sci ; 23(10)2022 May 14.
Artículo en Inglés | MEDLINE | ID: mdl-35628304

RESUMEN

In live cells, proteins and nucleic acids can associate together through multivalent interactions, and form relatively isolated phases that undertake designated biological functions and activities. In the past decade, liquid-liquid phase separation (LLPS) has gradually been recognized as a general mechanism for the intracellular organization of biomolecules. LLPS regulates the assembly and composition of dozens of membraneless organelles and condensates in cells. Due to the altered physiological conditions or genetic mutations, phase-separated condensates may undergo aberrant formation, maturation or gelation that contributes to the onset and progression of various diseases, including neurodegenerative disorders and cancers. In this review, we summarize the properties of different membraneless organelles and condensates, and discuss multiple phase separation-regulated biological processes. Based on the dysregulation and mutations of several key regulatory proteins and signaling pathways, we also exemplify how aberrantly regulated LLPS may contribute to human diseases.


Asunto(s)
Enfermedades Neurodegenerativas , Ácidos Nucleicos , Humanos , Proteínas/metabolismo
20.
J Clin Neurosci ; 101: 118-123, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35594832

RESUMEN

BACKGROUND AND AIMS: Microalbuminuria (MAU) reflects the generalized vascular endothelial dysfunction. Whether MAU has correlation with atherosclerotic intracranial and extracranial arterial stenosis in cerebral infarction patients is not known and is explored in the present investigation. METHODS: We enrolled 255 cerebral infarction patients hospitalized at the department of neurology. All patients underwent digital subtraction angiography (DSA) to evaluate the severity and distribution of intracranial and extracranial arterial stenosis. MAU was expressed as the urine albumin-to-creatinine ratio (UACR). We collected basic information, medical history reviews and laboratory results of each participant. The multivariate logistic regression analysis was utilized to analyze the risk factors for severity and distribution of cerebral arterial stenosis. RESULTS: The prevalence of MAU in patients with cerebral infarction was 39.2%, patients with MAU had older age, lower blood uric acid, higher systolic blood pressure (SBP), higher prevalence of hypertension and diabetes (p < 0.05) and higher incidence of atherosclerotic intracranial and extracranial arterial stenosis (χ2 = 5.900, p = 0.015). In multiple logistic regression analysis for intracranial and extracranial arterial stenosis more than 50% or occlusion groups, UACR (OR 1.088 95%CI 1.012-1.170p = 0.022), male (OR 2.196 95%CI 1.085-4.442p = 0.029) as well as SBP (OR 5.870 95%CI 1.026-1.048p = 0.015) showed statistical significance. But UACR had no correlation with the distribution of intracranial and extracranial artery stenosis after adjusting for all potential confounders. CONCLUSIONS: Microalbuminuria was an independent risk factor for intracranial and extracranial arterial stenosis more than 50% or occlusion.


Asunto(s)
Aterosclerosis , Arteriosclerosis Intracraneal , Infarto Cerebral/complicaciones , Infarto Cerebral/diagnóstico por imagen , Infarto Cerebral/epidemiología , Constricción Patológica , Humanos , Masculino , Factores de Riesgo
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