Phosphate Limitation Enhances Heterologous Enzyme Production in : Mechanistic Insights and Universal Applicability.

is one of the commonly used hosts for heterologous enzyme expression, depending on media rich in carbon, nitrogen, and phosphate sources for optimal growth and enzyme production. Interestingly, our investigation of maltotetraose-forming amylase, a key enzyme for efficient maltotetraose synthesis, revealed that phosphate limitation significantly enhances the growth rate and production of heterologous enzymes in recombinant . Under phosphate-limited conditions in a 15 L fermenter, the enzyme activity reached 679.

Salvianolic acid A promotes bone-fracture healing via balancing osteoblast and osteoclast differentiation.

Nonunion is a significant complication in fracture management for surgeons. Salvianolic acid A (SAA), derived from the traditional Chinese plant Salviae miltiorrhizae Bunge (Danshen), exhibits notable anti-inflammatory and antioxidant properties. Although studies have demonstrated its ability to promote osteogenic differentiation, the exact mechanism of action remains unclear.

Tranexamic dosing for major joint arthroplasty in adult patients with chronic kidney disease: A pharmacokinetic study and new dosing regimen.

Background: Tranexamic acid is an anti-fibrinolytic agent routinely used during hip and knee joint replacement surgery to minimize bleeding. Chronic kidney disease is a common chronic health problem seen among adults requiring major arthroplasty surgery. Tranexamic acid is renally cleared and may accumulate in chronic kidney disease.

Stereoselective Reaction Enabling Simultaneous Analysis of Carbon-Carbon Double-Bond Configuration and the Position of Monounsaturated Fatty Acids through UHPLC-ESI-MRM-MS.

Monounsaturated fatty acids (MUFA) are an important class of nutrients and are involved in lipid metabolism. The positions of the C=C bond and cis-trans isomerism have a significant influence on their physiological activity. However, simultaneously detecting these two structural properties has been challenging due to multiple isomers of MUFA.

CMRxRecon2024: A Multimodality, Multiview k-Space Dataset Boosting Universal Machine Learning for Accelerated Cardiac MRI.

. The released CMRxRecon2024 dataset is currently the largest and most protocol-diverse publicly available k-space dataset including multi-modality and multi-view cardiac MRI data from 330 healthy volunteers, and each one covers standardized and commonly used clinical protocols. ©RSNA, 2025.

Segmentation of coronary artery and calcification using prior knowledge based deep learning framework.

Background: Computed tomography angiography (CTA) is used to screen for coronary artery calcification. As the coronary artery has complicated structure and tiny lumen, manual screening is a time-consuming task. Recently, many deep learning methods have been proposed for the segmentation (SEG) of coronary artery and calcification, however, they often neglect leveraging related anatomical prior knowledge, resulting in low accuracy and instability.

Radiogenomic explainable AI with neural ordinary differential equation for identifying post-SRS brain metastasis radionecrosis.

Background: Stereotactic radiosurgery (SRS) is widely used for managing brain metastases (BMs), but an adverse effect, radionecrosis, complicates post-SRS management. Differentiating radionecrosis from tumor recurrence non-invasively remains a major clinical challenge, as conventional imaging techniques often necessitate surgical biopsy for accurate diagnosis. Machine learning and deep learning models have shown potential in distinguishing radionecrosis from tumor recurrence.

σ-Electrons rather than π-Electrons Inducing Sensitive Nonlinear Optical Responses in Planar and Quasi-Planar Boron Clusters.

Geometries and electronic structures of planar and quasi-planar boron clusters resemble those of aromatic hydrocarbons, providing opportunities for designing novel nonlinear optical materials. However, the nonlinear optical properties, optical-response mechanisms, and optimal optical-response geometries of boron clusters remain unclear. Accordingly, this study addresses these uncertainties.

An Unusual Meroterpenoid and Two New Steroids from Fungus Penicillium fellutanum and Their Bioactivities.

An unusual clathrate-type meroterpenoid isoatlantinone A (1), two new steroids acrocalysterols E (2) and F (3), together with fifteen known compounds (4-18) were separated from a plant-associated fungus Penicillium fellutanum. Their structures and absolute configurations were established based on spectroscopic data (NMR and HRESIMS), electronic circular dichroism (ECD) and modified Mosher's method. Notably, compound 1 represents an unusual highly oxygenated meroterpenoid derivative with a unique caged bioxatetracyclo-[6.

Cinnamaldehyde-Based ROS-Responsive Polymeric Gene Vectors for Efficient Gene Delivery and Tumor Cell Growth Inhibition.

Reactive oxygen species (ROS)-sensitive polymers are extensively used in cancer therapies. However, the ROS levels in the tumor microenvironment are often insufficient to trigger an adequate therapeutic response. Herein, we report a cinnamaldehyde ()-based ROS-responsive cationic polymer () and demonstrate its high efficiency in gene delivery and tumor cell growth inhibition.

Coordination-regulated copper single-atom active sites for electrochemical reduction of nitrate to ammonia.

The electrochemical conversion of nitrate to ammonia is necessary to restore the globally perturbed nitrogen cycle. Herein, the regulated coordination of active Cu single atoms to selectively modulate the energy barriers of proton-electron transfer steps was investigated and offered valuable insights for improving the selectivity and kinetics of the NORR.

Performance characterization of x-ray crystal spectroscopy highly oriented pyrolytic graphite reflectors based on x-ray diffractometry experiments.

The use of Highly Oriented Pyrolytic Graphite (HOPG) reflectors is often proposed in the design of X-ray Crystal Spectroscopy (XCS) diagnostic systems for the next-generation tokamak devices, including the ITER project. This study introduces an experimental study based on the X-Ray Diffractometry (XRD) method to evaluate the performance of HOPG reflectors. The experimental method provides both the angular responses and the reflectivities of the HOPG reflectors.

Global trends in thyroid cancer 1990-2021: an analysis based on the GBD 2021.

This study evaluated the global burden of thyroid cancer (TC) from 1990 to 2021, analyzing its association with sociodemographic factors, sex, age, risk factors, and future projections. Using 2021 Global Burden of Disease data, we analyzed TC incidence, mortality, and disability-adjusted life years (DALYs) across populations. Risk factors were assessed, and future trends forecasted using the Bayesian age-period-cohort model.

Bioinspired Antiswelling Hydrogel Sensors with High Strength and Rapid Self-Recovery for Underwater Information Transmission.

Hydrogel-based sensors typically demonstrate conspicuous swelling behavior in aqueous environments, which can severely compromise the mechanical integrity and distort sensing signals, thereby considerably constraining their widespread applicability. Drawing inspiration from the multilevel heterogeneous structures in biological tissues, an antiswelling hydrogel sensor endowed with high strength, rapid self-recovery, and low swelling ratio was fabricated through a water-induced phase separation and coordination cross-linking strategy. A dense heterogeneous architecture was developed by the integration of "rigid" quadridentate carboxyl-Zr coordination bonds and "soft" hydrophobic unit-rich regions featuring π-π stacking and cation-π interactions into the hydrogels.

Value of Spleen Dynamic Contrast-enhanced Ultrasound Parameters in Predicting Hepatic Vein Pressure Gradient for Patients With Liver Cirrhosis.

Goals: To explore dynamic contrast-enhanced ultrasound (CEUS) parameters in predicting hepatic vein pressure gradient (HVPG) for patients with liver cirrhosis (LC).

Background: Noninvasive diagnosis of HVPG remains a challenge.

Study: This prospective study included patients with LC undergoing hepatic vein catheterization and pressure measurement at the hospital from May 2021 to January 2023.

Low-Level Fe Doping in CoMoO Enhances Surface Reconstruction and Electronic Modulation Creating an Outstanding OER Electrocatalyst for Water Splitting.

Efficient and stable nonprecious metal-based oxygen evolution reaction (OER) electrocatalysts are pivotal for water electrolysis technology. Herein, we are reporting an effective strategy for fabricating efficient Co-based OER electrocatalysts by low-level Fe doping in CoMoO to boost surface reconstruction and electronic modulation, which resulted in excellent OER electroactivity consequently. Our findings reveal that a mere 5.

Individualized blood pressure regulation and acute kidney injury in older patients having major abdominal surgery: a pilot randomized trial.

Background: Acute kidney injury (AKI) is a common postoperative complication, and hypotension may contribute. We therefore tested the primary hypothesis that individualized intraoperative blood pressure regulation reduces postoperative AKI in older surgical patients.

Methods: We enrolled patients ≥60 years old scheduled for elective major abdominal surgery with invasive arterial pressure monitoring.

A novel cellulose-derived graphite carbon/ZnO composite by atomic layer deposition as an over-wideband microwave absorbent.

It is a major challenge to obtain broadband microwave absorption (MA) properties using low dielectric or magnetic nanoparticle-decorated carbon composites due to the limited single conductive loss or polarization loss of the carbon materials used as substrates. Novel pure cellulose-derived graphite carbon (CGC) materials can be used as an exceptional substrate option due to their special defective graphitic carbon structure, which provides both conduction and polarization loss. Herein, CGC@ZnO composites were first synthesized by atomic layer deposition (ALD) for use as microwave absorbents.

Fibroblast growth factor 23 and outcomes of atrial fibrillation: from clinical association to genetic evidence.

Aims: Fibroblast growth factor 23 (FGF23) has been implicated in the occurrence of atrial fibrillation (AF), but its prognostic value in AF patients remains unclear.

Methods And Results: A total of 35 197 AF patients with available follow-up data (3.56, 0.

Size-Effect Enriched Phase Diagram in -Type Skutterudite Superconductor IrSb.

Pressurized IrX (X = P and As) stands out as the sole -type superconductors among dozens of filled-skutterudites that are primarily characterized by -type charge carriers. The emergence of superconductivity is proposed to be intimately related to the inharmonic rattling phonons originating from the filled atoms. Here, we explore the impact of the size effect of the rattling atoms by substituting X with Sb, whose radius is 30 and 17% larger than those of P and As, respectively.

Transition metal complexes: next-generation photosensitizers for combating Gram-positive bacteria.

The rise of antibiotic-resistant Gram-positive bacterial infections poses a significant threat to public health, necessitating the exploration of alternative therapeutic strategies. A photosensitizer (PS) can convert energy from absorbed photon into reactive oxygen species (ROS) for damaging bacteria. This photoinactivation action bypassing conventional antibiotic mechanism is less prone to resistance development, making antibacterial photodynamic therapy (aPDT) highly efficient in combating Gram-positive bacteria.

Multifunctional UV photodetect-memristors based on area selective fabricated GaS/graphene/GaN van der Waals heterojunctions.

Multifunctional devices based on van der Waals heterojunctions have drawn significant attention owing to their portable size, low power consumption and various application scenarios. However, high fabrication equipment requirements, complex device structures and limited operating conditions hinder their potential value. Herein, multifunctional UV photodetect-memristors based on GaS/graphene/GaN van der Waals heterojunctions area selective deposition have been proposed for the first time.