447,223 results match your criteria: "PR China; Center for Excellence in Brain Science and Intelligence Technology[Affiliation]"

Seeding Janus Zn-Fe Diatomic Pairs on a Hollow Nanobox for Potent Catalytic Therapy.

Nano Lett

January 2025

Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China.

Dual atomic nanozymes (DAzymes) are promising for applications in the field of tumor catalytic therapy. Here, integrating with ultrasmall FeC nanoclusters, asymmetric coordination featuring Janus Zn-Fe dual-atom sites with an ON-Fe-Zn-N moiety embedded in a carbon vacancy-engineered hollow nanobox (Janus ZnFe DAs-FeC) was elaborately developed. Theoretical calculation revealed that the synergistic effects of Zn centers acting as both adsorption and active sites, oxygen-heteroatom doping, carbon vacancy, and FeC nanoclusters jointly downshifted the d-band center of Fe 3d orbitals, optimizing the desorption behaviors of intermediates *OH, thereby significantly promoting catalytic activity.

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The heat-induced natural egg yolk is a discontinuous object formed by the accumulation of yolk spheres. However, the reason why yolk spheres form individual microgels rather than continuous gels has not been elucidated. This study investigated the different gelation behaviors in the yolk sphere exterior (EYSE) and the yolk sphere interior (EYSI) by using 4D-DIA proteomics, electron microscopy, and multispectral techniques.

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Sulfur-containing small molecules, mainly including cysteine (Cys), homocysteine (Hcy), glutathione (GSH), and hydrogen sulfide (HS), are crucial biomarkers, and their levels in different body locations (living cells, tissues, blood, urine, saliva, ) are inconsistent and constantly changing. Therefore, it is highly meaningful and challenging to synchronously and accurately detect them in complex multi-component samples without mutual interference. In this work, we propose a steric hindrance-regulated probe, NBD-2FDCI, with single excitation dual emissions to achieve self-adaptive detection of four analytes.

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High drug resistance remains a challenge for chemotherapy against hepatocellular carcinoma (HCC). Combining chemotherapeutic agents with microRNA (miRNA), which simultaneously regulates multiple pathways, offers a promising approach to improve therapeutic efficacy against HCC. Although cationic amphiphilic copolymers have been used to co-deliver these agents, their effectiveness is often limited by low co-encapsulation efficiency and inherent cationic toxicity.

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Background: The Fontan procedure is a surgical intervention designed for patients with single ventricle physiology, wherein the systemic venous return is redirected into the pulmonary circulation, thereby facilitating passive pulmonary blood flow without the assistance of ventricular propulsion. Consequently, long-term follow-up of individuals who have undergone the asymptomatic Fontan procedure is essential.

Objectives: The aims of this investigation were to: 1) examine the impact of flow components and kinetic energy (KE) parameters on hemodynamic disturbances in asymptomatic Fontan patients and control group; 2) Assess left ventricular diastolic dysfunction through the analysis of 4D flow parameters across different Fontan sub-groups; 3) Compare intracardiac flow parameters among Fontan sub-groups based on morphological features of the left ventricle (LV) and right ventricle (RV).

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High-level production of free fatty acids from lignocellulose hydrolysate by co-utilizing glucose and xylose in yeast.

Synth Syst Biotechnol

June 2025

Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, PR China.

Lignocellulose bio-refinery via microbial cell factories for chemical production represents a renewable and sustainable route in response to resource starvation and environmental concerns. However, the challenges associated with the co-utilization of xylose and glucose often hinders the efficiency of lignocellulose bioconversion. Here, we engineered yeast to effectively produce free fatty acids from lignocellulose.

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Chronic osteomyelitis caused by implant infections is a common complication following orthopedic surgery. Preventing bacterial infection and simultaneously improving bone regeneration are the key for osteomyelitis. Current treatments include systemic antibiotics and multiple surgical interventions, but the strategies available for treatment are limited.

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Peptide vaccines based on tumor antigens face the challenges of rapid clearance of peptides, low immunogenicity, and immune suppressive tumor microenvironment. However, the traditional solution mainly uses exogenous substances as adjuvants or carriers to enhance innate immune responses, but excessive inflammation can damage adaptive immunity. In the current study, we propose a straightforward novel nanovaccine strategy by employing homologous human ferritin light chain for minimized innate immunity and dendritic cell (DC) targeting, the cationic KALA peptide for enhanced cellular uptake, and suppressor of cytokine signaling 1 (SOCS1) siRNA for modulating DC activity.

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Efficient ternary organic solar cells with suppressed nonradiative recombination via B‒N based polymer donor.

iScience

January 2025

Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.

Organic solar cells (OSCs) have developed rapidly in recent years. However, the energy loss ( ) remains a major obstacle to further improving the photovoltaic performance. To address this issue, a ternary strategy has been employed to precisely tune the and boost the efficiency of OSCs.

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Generative design of crystal structures by point cloud representations and diffusion model.

iScience

January 2025

School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China.

Efficiently generating energetically stable crystal structures has long been a challenge in material design, primarily due to the immense arrangement of atoms in a crystal lattice. To facilitate the discovery of stable materials, we present a framework for the generation of synthesizable materials leveraging a point cloud representation to encode intricate structural information. At the heart of this framework lies the introduction of a diffusion model as its foundational pillar.

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A review of electrospun metal oxide semiconductor-based photocatalysts.

iScience

January 2025

Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, 266 Xincun Xi road, Zibo 255000, P.R. China.

In recent years, photocatalytic materials with a nanofiber-like morphology have garnered a surge of academic attention due to their distinctive properties, including an expansive specific surface area, a considerable high aspect ratio, a pronounced resistance to agglomeration, superior electron survivability, and robust surface activity. Consequently, the synthesis of photocatalytic nanofiber materials through various methodologies has drawn considerable attention. The electrospinning technique has been established as a prevalent method for fabricating nanofiber-structured materials, owing to its advantageous properties, including the ability for mass production and the assurance of high continuity.

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Modular assembly of amines and diborons with photocatalysis enabled halogen atom transfer of organohalides for C(sp)-C(sp) bond formation.

Chem Sci

January 2025

College of Chemistry and Chemical Engineering, Key (Guangdong-Hong Kong Joint) Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University Shantou 515063 P. R. China

In the past few years, the direct activation of organohalides by ligated boryl radicals has emerged as a potential synthetic tool for cross-coupling reactions. In most existing methods, ligated boryl radicals are accessed from NHC-boranes or amine-boranes. In this work, we report a new photocatalytic platform by modular assembly of readily available amines and diboron esters to access a library of ligated boryl radicals for reaction screening, thus enabling the cross-coupling of organohalides and alkenes including both activated and unactivated ones for C(sp)-C(sp) bond formation by using the assembly of DABCO A1 and BNepB1.

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In overcoming the barrier of rapid Li transfer in lithium-ion batteries at extreme temperatures, the desolvation process and interfacial charge transport play critical roles. However, tuning the solvation structure and designing a kinetically stable electrode-electrolyte interface to achieve high-rate charging and discharging remain a challenge. Here, a lithium nonafluoro-1-butanesulfonate (NFSALi) additive is introduced to optimize stability and the robust solid electrolyte interface film (SEI), realizing a rapid Li transfer process and the structural integrity of electrode materials.

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Introduction: Glioma is the most common primary malignant brain tumor. Despite advances in surgical techniques and treatment regimens, the therapeutic effects of glioma remain unsatisfactory. Immunotherapy has brought new hope to glioma patients, but its therapeutic outcomes are limited by the immunosuppressive nature of the tumor microenvironment (TME).

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Effect of hybrid blood purification on nutritional status, inflammation, and cardiovascular events in patients with end-stage renal disease.

Pak J Med Sci

January 2025

Rong Zou Department of Nephrology, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan Province 421002, P.R. China.

Objective: To explore the effects of hybrid blood purification on nutritional status and cardiovascular events in patients with end-stage renal disease (ESRD).

Methods: A total of 135 patients with ESRD who received treatment in The Affiliated Nanhua Hospital of Hengyang Medical School from March 2021 to June 2023 were included in this retrospective study. Of them, 66 patients were treated with hemodialysis purification (hemodialysis group), and 69 patients underwent hybrid blood purification (hybrid group).

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Therapeutic effect of titanium locking plate combined with suture anchor repair in proximal humeral fractures.

Pak J Med Sci

January 2025

Zhenfeng Huang Department of Orthopedic Trauma, Wuhan Fourth Hospital, Wuhan, Hubei Province 430000, P.R. China.

Objective: To explore the therapeutic effect of titanium locking plate combined with suture anchor (SA) repair in the treatment of proximal humeral fractures (PHF).

Methods: This retrospective study was conducted by analyzing the clinical data of 113 patients with PHF admitted to Wuhan Fourth Hospital from March 2021 to October 2023. Among them, 55 patients underwent open reduction and internal fixation (OR/IF) using titanium locking plate (OR/IF group), and 58 patients underwent surgery with titanium locking plate combined with SA (SA group).

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Objective: The survival benefit of venoarterial Extracorporeal Membrane Oxygenation (ECMO) for the management of acute high-risk pulmonary embolism (PE) remains unclear. This meta-analysis combines data from comparative studies to assess the risk of mortality after ECMO vs standard care in the management of acute high-risk PE.

Methods: Databases of PubMed, CENTRAL, Scopus, Web of Science, and Embase were searched from 01 January 2000 to 24 March 2023 for comparative studies with at least 10 patients/group comparing ECMO vs standard treatment.

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Objective: To evaluate the efficacy of supra-inguinal fascia iliaca compartment block (S-FICB) in patients undergoing proximal femoral nail antirotation (PFNA) internal fixation surgery for intertrochanteric fracture (ITF).

Methods: Retrospective analysis of 95 patients with ITF undergoing PFNA internal fixation surgery in the First People's Hospital of Yong Kang from March 2021 to August 2023 was performed. Among them, 49 patients received general anesthesia (GA; GA group) and 46 patients received S-FICB combined with general anesthesia (S-FICB group).

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Correlation between the severity of endometriosis and the occurrence of placenta accreta spectrum in the subsequent pregnancy.

Pak J Med Sci

January 2025

Shunhe Lin Department of Obstetrics and Gynecology, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology Pediatrics, Fujian Medical University, Fuzhou, Fujian Province 350001, P.R. China.

Objective: To investigate the correlation between endometriosis (EMs) severity and placenta accreta spectrum (PAS) risk in the subsequent pregnancy.

Method: Clinical records of 2,142 patients who underwent laparoscopic surgery for EMs at Fujian Provincial Maternal and Child Health Hospital from January 2014 to January 2018, who had achieved pregnancy and were delivered, were analyzed. Baseline data, EMs stage, The Revised American Fertility Society (R-AFS) score, levels of serum indexes, and pregnancy and neonatal outcomes were recorded.

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Association of assisted reproductive technology with adverse maternal outcome: A cohort study.

Pak J Med Sci

January 2025

Jianying Yan Department of Obstetrics and Gynecology, Fujian Maternity and Child Health Hospital College of Clinical Medicine, for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian Province 350001, P.R. China.

Background & Objective: To assess the association of assisted reproductive technologies (ART) conception with postpartum hemorrhage (PPH) during the peripartum and postpartum periods.

Methods: Clinical records of 11,497 patients enrolled in Fujian Maternity and Child Health Hospital between March 2013 and December 2018 were retrospectively analyzed and divided into the ART group and the natural conception group based on the mode of conception. The incidence of PPH and blood loss at 30, 60, 90, and 120 minutes after delivery were compared.

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Objective: To explore the risk factors associated with postoperative atrial fibrillation (POAF) after off-pump coronary artery bypass grafting (OPCABG) and to construct a nomogram predictive model.

Methods: In this retrospective cohort study, clinical data of 193 patients who received OPCABG in Huai'an First People's Hospital Affiliated to Nanjing Medical University from June 2021 to November 2023 were retrospectively analyzed. Based on the established diagnosis of POAF, patients were divided into the POAF group (n=75) and the non-POAF group (n=118).

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Objective: To explore the efficacy of the nutritional support team (NST) management model in patients undergoing total gastrectomy combined with Roux-en-Y anastomosis.

Methods: Clinical data of 102 patients who underwent total gastrectomy combined with Roux-en-Y anastomosis in Xingtai Central Hospital from January 2020 to October 2023 were retrospectively collected. Of 102 patients, 53 received the NST model of management (NST group), while 49 were managed by the conventional nutritional support (TN group).

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Efficacy of 4-dimensional hysterosalpingo-contrast sonography and X-ray hysterosalpingography in infertility.

Pak J Med Sci

January 2025

Ruichao Miao Department of Reproductive Center, Qingdao Women and Children's Hospital, Qingdao, Shandong Province 266000, P.R. China.

Objective: To assess and compare efficacy of 4-dimensional hysterosalpingo-contrast sonography (4D-HyCoSy) and X-ray hysterosalpingography (HSG) for fallopian tube examination.

Methods: Clinical data of patients with suspected tubal infertility, who underwent examinations in Qingdao Women and Children's Hospital from September 2021 to December 2023, were retrospectively analyzed. Of them, 40 patients received laparoscopy and dye test+ 4D-HyCoSy (4D-HyCoSy group), and 36 patients received laparoscopy and dye test +HSG (HSG group).

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Objective: To analyze the efficacy of indocyanine green fluorescence (ICG-F)-assisted laparoscopic hepatectomy in patients with hepatocellular carcinoma (HCC).

Methods: This retrospective study included 120 patients with HCC who underwent laparoscopic hepatectomy in The First Affiliated Hospital of Soochow University from February 2020 to November 2022. Among them, 58 patients underwent conventional laparoscopic surgery (laparoscopic group), and 62 patients underwent ICG-F assisted laparoscopic surgery (ICG-F group).

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Influence of parity on weight gain during pregnancy in women with Gestational Diabetes: A retrospective cohort study.

Pak J Med Sci

January 2025

Lianghui Zheng Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics, Gynecology and Pediatrics, Fujian Medical University. P.R. China.

Objective: This retrospective cohort study aimed to investigate the effects of parity on gestational weight gain (GWG) and its association with maternal and neonatal outcomes in women with gestational diabetes mellitus (GDM).

Methods: This retrospective cohort study data from 2,909 pregnant women with GDM who delivered between 2021 and 2023 at Fujian Maternity and Child Health hospital, were analyzed. Participants were categorized into nulliparous (no previous births), primiparous (one previous birth), and multiparous (two or more previous births) groups.

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