Oriented porous microtubules combined with CNTF-delivery directional guide axonal regeneration after traumatic optic neuropathy.

Neuroinflammation microenvironment and retinal ganglion cell (RGC) apoptosis are two critical barriers to axonal regeneration following traumatic optic neuropathy (TON). To overcome these challenges, we developed an innovative dual drug delivery strategy utilizing oriented porous nanofiber (OF) and ciliary neurotrophic factor (CNTF)-loaded delivery systems, aiming to promote axonal regeneration and restore RGC survival. Cerium oxide nanoparticles (Ce NPs) were physically mixed with poly(L-lactic acid)/polycaprolactone (PLA/PCL) solution to prepare oriented porous nanofibers (OF-Ce) via electrospinning and solvent evaporation techniques.

MXene-chitosan photo-responsive conduit for wireless optogenetic stimulation to enhance neural regeneration and functional recovery after optic nerve injury.

Optic nerve injury triggers progressive degeneration of retinal ganglion cells (RGCs) and axonal loss, driven by inhibitory microenvironmental factors such as glial scarring, myelin debris, and growth-inhibitory signaling. Physical stimuli such as photothermal and photoelectric stimulations have gained attention, yet little is known about their potential on normal cells or the optic nerve due to setbacks from over-exposure. Photothermal stimulus presents photoelectric cues and, at the same time, energy conversion for heat generation.

Halogen anion (Cl-, Br-) and alkali metal cation (Cs+, K+, Rb+) synergistic binding behaviors using a belt shaped dual-functional hydrocarbon receptor.

The belt shaped functionalized hydrocarbon receptors have attracted great interest because of their special "frustum-like" configuration, in which the openings at the upper and lower ends (dual-functional sites) are more beneficial when used as ion recognition sites. In this paper, the binding behaviors of the belt shaped dual-functional hydrocarbon receptors for halogen anions (Cl- and Br-) and alkali metal cations (K+, Rb+, and Cs+) were investigated in depth using density functional theory calculations. It is found that anion/cation binding can be enhanced and synergistically regulated by counterion and the corresponding conformational changes of the receptor, which well reflects the electrical complementary matching and mutual reinforcement effects.

Bioactive Nanomaterials: Comprehensive Monitoring and Regulation of Acute Pancreatitis Induced Acute Lung Injury.

Mounting evidence suggests acute lung injury (ALI) or acute respiratory distress syndrome (ARDS) is a complication of acute pancreatitis (AP), a disorder associated with several health challenges, a common cause of multiple organ damage, and a contributing factor to mortality. The exact mechanism behind the disorder has not been fully understood over the years, although what is mostly known is that the intensity of the AP in turn plays a significant role in the state of the ALI/ARDS. The eradicative role via conventional/pharmacological intervention has caused only little impact over the years.

Promoting tumor cell secretion of IL18 to induce reprogramming of tumor-associated macrophages - The novel anticancer mechanism of anlotinib in ovarian cancer.

Ovarian cancer represents a formidable challenge to female reproductive health, mainly due to a marked propensity for intraperitoneal implant metastasis, as well as a lack of effective therapeutic strategies. Anlotinib, a multi-targeted receptor tyrosine kinase inhibitor, has demonstrated anti-tumor effects across various tumors and promising clinical outcomes in ovarian cancer. However, the underlying molecular mechanisms of anlotinib on tumor-associated macrophages (TAMs) within the ovarian tumor microenvironment have not been completely elaborated yet.

Dimercaprol attenuates oxidative stress-induced damage of retinal ganglion cells in an in vitro and in vivo model of traumatic optic neuropathy.

Traumatic optic neuropathy (TON) is a prevalent form of optic neuropathy, which is a significant cause of irreversible blindness. To date, effective therapeutic interventions for TON are lacking, highlighting the urgent need for the development of new therapeutic drugs. In this study, a compound library comprising 480 Food and Drug Administration (FDA)-approved drugs was screened to identify potentially effective therapeutic drugs for TON.

Short peptide hydrogel with angular structure for hydrophobic antitumor drug delivery and controlled release.

Although hydrophobic anti-tumor drugs such as paclitaxel (PTX) have been used to treat various cancers, their clinical application is limited due to their poor water solubility, low bioavailability and adverse drug reactions. Peptide hydrogels are being increasingly used for antitumor drug delivery due to their diverse synthesis and function and excellent biocompatibility. From the perspective of economic and clinical benefits, it is essential to design peptide hydrogels for anti-tumor drug delivery that can achieve tumor microenvironment responsiveness with short sequences.

Comparison of robot-assisted vs. traditional laparoscopic sacral colpopexy for pelvic organ prolapse: Outcomes and quality of life.

BackgroundPelvic organ prolapse is a prevalent condition affecting women of varying ages and ethnicities globally. The prevalence of pelvic organ prolapse is substantial, with estimates suggesting that up to 50% of parous women may experience some degree of prolapse during their lifetime.ObjectiveThis retrospective evaluation aimed to compare the outcomes of robot-assisted sacral colpopexy (RASC) and traditional laparoscopic sacral colpopexy (LSC) in the treatment of pelvic organ prolapse, focusing on surgical outcomes, postoperative pain, quality of life, complications, and recurrence rates.

ROS-responsive drug delivery system with enhanced anti-angiogenic and anti-inflammatory properties for neovascular age-related macular degeneration therapy.

Neovascular age-related macular degeneration (nAMD) has become the leading cause of vision loss in people over 60 years old. Anti-vascular endothelial growth factor (anti-VEGF), the current first-line drug for the treatment of nAMD, suffers from poor patient compliance and fundus fibrosis scar formation. In addition to VEGF, oxidative stress and inflammation also play key roles in the pathological process of choroidal neovascularization (CNV).

Phellodendrine ameliorates intestinal inflammation and protects mucosal barrier via modulating COL1A1, VCAM1 and IL-17 a.

Background: Phellodendrine (PHE) has anti-inflammatory and antioxidant effects. However, the function of PHE in treating inflammatory bowel disease (IBD) has not been fully elucidated. The aim of this study was to investigate the effects and mechanisms of PHE on IBD with in vivo and in vitro assays.

Evaluation of binding interaction between compounds targeting peroxisome proliferator-activated receptor γ in Nelumbinis folium using receptor chromatography and molecular dynamic simulation.

Despite considerable efforts invested in clinical trials aimed at treating obesity and enhancing the metabolic profiles of Nelumbinis Folium, the precise phytochemicals involved and their mechanisms of action remain unclear due to the absence of an efficient screening technique. Herein, Nelumbinis Folium serves as the focal point to elucidate the bioactive compounds that specifically bind to peroxisome proliferator-activated receptor γ using immobilized receptor chromatography. Following identification through liquid chromatography-mass spectrometry, the compounds were further evaluated using chromatographic techniques and molecular dynamics simulations.

Rational evaluation of the clinical application of ceftazidime-avibactam for the treatment of carbapenem-resistant Klebsiella pneumoniae infections: A real-world retrospective study.

Objectives: To evaluate the rationality of the clinical use of ceftazidime-avibactam (CAZ-AVI) for carbapenem-resistant Klebsiella pneumoniae (CRKP) infections in a real-world setting.

Methods: We established the rational evaluation criteria based on drug instructions and relevant guidelines to retrospectively evaluate the use of CAZ-AVI to treat CRKP infections from June 2020 to June 2023 in a tertiary hospital in China. Patients were divided into the rational use group and irrational use group.

Bioinspired adhesive polydopamine-metal-organic framework functionalized 3D customized scaffolds with enhanced angiogenesis, immunomodulation, and osteogenesis for orbital bone reconstruction.

Critical-sized orbital bone defects can lead to significant maxillofacial deformities and even eye movement disorders. The challenges associated with these defects, including their complicated structure, inadequate blood supply, and limited availability of progenitor cells that hinder successful repair. To overcome these issues, we developed a novel approach using computer numerical control (CNC) material reduction manufacturing technology to produce a customized polyetheretherketone (PEEK) scaffold that conforms to the specific shape of orbital bone defects.

Injectable hydrogel encapsulating siMMP13 with anti-ROS and anti-apoptotic functions for osteoarthritis treatment.

Background: Osteoarthritis (OA) is a degenerative joint disease characterized by the progressive degeneration of articular cartilage, leading to pain, stiffness, and loss of joint function. The pathogenesis of OA involves multiple factors, including increased intracellular reactive oxygen species (ROS), enhanced chondrocyte apoptosis, and disturbances in cartilage matrix metabolism. These processes contribute to the breakdown of the extracellular matrix (ECM) and the loss of cartilage integrity, ultimately resulting in joint damage and dysfunction.

Druggability properties of a L309K mutation in the antibody CH2 domain.

In the early stages of antibody drug development, it is imperative to conduct a comprehensive assessment and enhancement of the druggability attributes of potential molecules by considering their fundamental physicochemical properties. This study specifically concentrates on the surface-exposed hydrophobic region of the candidate antibody aPDL1-WT and explores the effectiveness of the L309K mutation strategy. The resulting aPDL1-LK variant demonstrates a notable enhancement over the original antibody in addressing the issue of aggregation and formation of large molecular impurities under accelerated high-temperature conditions.

Synergistic regulation of chloride anion recognition using a triple-functional sites receptor with two different cationic effectors.

The synergistic regulation of the multi-functional sites on one receptor molecule with different cationic effectors for anion recognition is scarce to be well understood from the experiment and theory. In this work, a new anion receptor with three functional zones including ether hole, biurea and double bipyridine groups (EUPR) is designed expecting to enhance the chloride anion recognition together with a rational synthesis path being proposed based on four simple and mature organic reaction steps. The conformational structures of the designed receptor EUPR and the binding behaviors for three kinds of ions (Cl, Na, and Ag) are deeply investigated by using density functional theoretical calculations.

Integrated Metabolome and Transcriptome Analysis of Gibberellins Mediated the Circadian Rhythm of Leaf Elongation by Regulating Lignin Synthesis in Maize.

Plant growth exhibits rhythmic characteristics, and gibberellins (GAs) are involved in regulating cell growth, but it is still unclear how GAs crosstalk with circadian rhythm to regulate cell elongation. The study analyzed growth characteristics of wild-type (WT), and with GA seedlings. We integrated metabolomes and transcriptomes to study the interaction between GAs and circadian rhythm in mediating leaf elongation.

Cuproptosis-related gene SLC31A1: prognosis values and potential biological functions in cancer.

Cuproptosis is a unique type of cell death that may influence tumour formation by targeting lipoylated tricarboxylic acid cycle proteins. Solute carrier family 31 member 1 (SLC31A1), an important copper transporter, influences dietary copper absorption in the cell membrane. However, various SLC31A1 properties in pan-cancer profiles remain unknown.

Expression of concern: Bacterial infection microenvironment-responsive enzymatically degradable multilayer films for multifunctional antibacterial properties.

Expression of concern for 'Bacterial infection microenvironment-responsive enzymatically degradable multilayer films for multifunctional antibacterial properties' by Qingqing Yao , , 2017, , 8532-8541, https://doi.org/10.1039/C7TB02114C.

A Dual-Targeted Metal-Organic Framework Based Nanoplatform for the Treatment of Rheumatoid Arthritis by Restoring the Macrophage Niche.

Inflammatory infiltration and bone destruction are important pathological features of rheumatoid arthritis (RA), which originate from the disturbed niche of macrophages. Here, we identified a niche-disrupting process in RA: due to overactivation of complement, the barrier function of lining macrophages is disrupted and mediates inflammatory infiltration within the joint, thereby activating excessive osteoclastogenesis and bone resorption. However, complement antagonists have poor biological applications due to superphysiologic dose requirements and inadequate effects on bone resorption.

Multifunctional porous poly (L-lactic acid) nanofiber membranes with enhanced anti-inflammation, angiogenesis and antibacterial properties for diabetic wound healing.

With increased diabetes incidence, diabetic wound healing is one of the most common diabetes complications and is characterized by easy infection, chronic inflammation, and reduced vascularization. To address these issues, biomaterials with multifunctional antibacterial, immunomodulatory, and angiogenic properties must be developed to improve overall diabetic wound healing for patients. In our study, we prepared porous poly (L-lactic acid) (PLA) nanofiber membranes using electrospinning and solvent evaporation methods.

Targeting ZDHHC9 potentiates anti-programmed death-ligand 1 immunotherapy of pancreatic cancer by modifying the tumor microenvironment.

Immune checkpoint blockade (ICB) therapy targeting the programmed death 1/programmed death-ligand 1 (PD-1/PD-L1) axis has achieved considerable success in treating a wide range of cancers. However, most patients with pancreatic cancer remain resistant to ICB. Moreover, there is a lack of optimal biomarkers for the prediction of response to this therapy.

Auxin efflux carrier ZmPIN1a modulates auxin reallocation involved in nitrate-mediated root formation.

Background: Auxin plays a crucial role in nitrate (NO)-mediated root architecture, and it is still unclear that if NO supply modulates auxin reallocation for regulating root formation in maize (Zea mays L.). This study was conducted to investigate the role of auxin efflux carrier ZmPIN1a in the root formation in response to NO supply.