Long-Segment Ventral Spinal Epidural Abscesses Caused by : A Report of 2 Cases and Review.

» Abscesses caused by spinal tuberculosis typically occur in the anterior and lateral regions of the vertebral bodies, often extending to the paraspinal muscles as cold abscesses. Although intraspinal abscesses due to spinal tuberculosis are very common, cases with longitudinally extensive abscesses in the ventral epidural space of the spinal cord are not well-documented. The disease is characterized by insidious onset, rapid progression, and a high risk of irreversible neurological damage, highlighting the necessity for early diagnosis and prompt treatment.

[Characteristics of PM Components and Typical Pollution Episodes in the Urban Areas of Beijing].

Based on the measurements of atmospheric fine particulate matter （PM） and its components, the evolution and sources of PM were studied at the Chegongzhuang site in the Beijing urban area in 2023. The primary component was crustal matter, accounting for 26.3% of PM, followed by nitrate （24.

Equivalent Circuit Modeling and Analysis for Microfluidic Electrical Impedance Monitoring of Single-Cell Growth.

Microfluidics has significantly advanced the field of single-cell analysis, particularly in studies related to cell growth, division, and heterogeneity. Electrical impedance spectroscopy (EIS), a label-free and non-invasive biosensing technique, has been integrated into microfluidic devices for high-throughput and long-term monitoring of single budding yeast cells. Accurate interpretation of EIS measurements of cell growth dynamics necessitates the establishment of theoretical equivalent circuit models for the single-cell sensing system.

Mast cell activation by NGF drives the formation of trauma-induced heterotopic ossification.

Soft tissue trauma can cause immune system disturbance and neuropathological invasion, resulting in heterotopic ossification (HO) due to aberrant chondrogenic differentiation of mesenchymal stem cells (MSCs). However, the molecular mechanisms behind the interaction between the immune and nervous systems in promoting HO pathogenesis are unclear. In this study, we found that mast cell-specific deletion attenuated localized tissue inflammation, with marked inhibition of HO endochondral osteogenesis.

Macrophage migration inhibitory factor promotes heterotopic ossification by mediating ROS/HIF-1α positive feedback loop and activating Wnt/β-catenin signaling pathway.

Background: Heterotopic ossification (HO) refers to the development of bone tissue in areas other than the skeletal system. The development and maturation of the skeletal system are significantly influenced by macrophage migration inhibitory factor (MIF). The objective of this study was to examine the impact of MIF on the in vitro osteogenic differentiation and mineralization of tendon-derived stem cells (TDSCs), mediated by a positive feedback loop involving ROS/HIF-1α/MIF.

Hypopituitarism after gamma knife radiosurgery for pituitary adenomas: long-term results from a single-center experience.

Objective: The aim of this study was to investigate the incidence and risk factors of new-onset hypopituitarism after gamma knife radiosurgery (GKRS) for pituitary adenomas in a single center.

Methods: In this retrospective study, 241 pituitary adenoma patients who underwent GKRS from 1993 to 2016 were enrolled. These patients had complete endocrine, imaging, and clinical data before and after GKRS.

A computer vision and residual neural network (ResNet) combined method for automated and accurate yeast replicative aging analysis of high-throughput microfluidic single-cell images.

With the rapid development of microfluidic platforms in high-throughput single-cell culturing, laborious operation to manipulate massive budding yeast cells (Saccharomyces cerevisiae) in replicative aging studies has been greatly simplified and automated. As a result, large datasets of microscopy images bring challenges to fast and accurately determine yeast replicative lifespan (RLS), which is the most important parameter to study cell aging. Based on our microfluidic diploid yeast long-term culturing (DYLC) chip that features 1100 traps to immobilize single cells and record their proliferation and aging via time-lapse imaging, herein, a dedicated algorithm combined with computer vision and residual neural network (ResNet) was presented to efficiently process tremendous micrographs in a high-throughput and automated manner.

Cost and Effectiveness of Percutaneous Endoscopic Interlaminar Discectomy versus Microscope-Assisted Tubular Discectomy for L5-S1 Lumbar Disc Herniation.

Objective: To assess the cost and effectiveness of percutaneous endoscopic interlaminar discectomy (PEID) and microscope-assisted tubular discectomy (MATD) for patients with L5/S1 lumbar disc herniation (LDH).

Methods: The medical and financial records of patients diagnosed with L5/S1 LDH and who underwent either PEID or MATD from April 2021 to April 2022 were retrospectively collected. Demographic and baseline information, perioperative observational index, clinical outcomes, and inpatient costs were analyzed.

Rapid adaptive evolution of Bacillus coagulans to undetoxified corncob hydrolysates for lactic acid production and new insights into its high phenolic degradation.

Here, an adapted Bacillus coagulans (Weizmannia coagulans) strain CC17B-1 was developed for lignocellulosic lactic acid production through a short and rapid adaptive laboratory evolution technique. Without any detoxification, two actual corn cob hydrolysates from the factory were effectively fermented to lactic acid within 60 h. Strain CC17B-1 is capable of degrading all nine determined phenolic compounds in the hydrolysate, with the only exception being vanillic acid.

Development of a Conjugation-Based Genome Editing System in an Undomesticated Strain for Poly-γ-glutamic Acid Production with Diverse Molecular Masses.

Poly-γ-glutamic acid (γ-PGA) is a biodegradable polymer produced by microorganisms. Biosynthesizing γ-PGA with diverse molecular masses () is an urgent industrial technical problem to be solved. KH2, a high- γ-PGA producer, is an ideal candidate for production of γ-PGA with diverse values.

An injectable pH neutral bioactive glass-based bone cement with suitable bone regeneration ability.

Background: As a class of promising bone augmentation materials, bone cements have attracted particular attention. Due to various limitations, the current bone cements are still imperfect. In this study, an injectable pH neutral bioactive bone cement (PSC/CSC) was developed by mixing phosphosilicate bioactive glass (PSC) and α-calcium sulfate hemihydrate (CSH), with the goal of optimizing bone defects repairs.

mTORC1 coordinates NF-κB signaling pathway to promote chondrogenic differentiation of tendon cells in heterotopic ossification.

Heterotopic ossification (HO) is a pathological bone formation based on endochondral ossification distinguished by ossification within muscles, tendons, or other soft tissues. There has been growing studies focusing on the treatment with rapamycin to inhibit HO, but the mechanism of mTORC1 on HO remains unclear. Tendon cells (TDs) are the first cells to form during tendon heterotopic ossification.

Efficient molasses utilization for low-molecular-weight poly-γ-glutamic acid production using a novel Bacillus subtilis stain.

Background: Poly-γ-glutamic acid (γ-PGA) is a biopolymer and has various applications based on its biocompatibility, non-toxicity, and edibility. Low-molecular-weight (Mw)-γ-PGA has promising applications in agriculture and pharmaceuticals. It is traditionally produced by enzymatic hydrolysis.

The efficacy and safety of Xuebijing injection for corona virus disease 2019: A protocol for a systematic review and meta-analysis.

Background: Corona virus disease 2019 (COVID-19) is an epidemic respiratory infectious disease caused by Severe Acute Respiratory Syndrome Coronavirus 2 infection. Now it is popular all over the world on a large scale. COVID-19 has the characteristics of rapid transmission, atypical clinical symptoms, easy missed diagnosis and misdiagnosis, and so on.

[Characteristics of Ozone Background Concentration in Beijing from 2004 to 2015].

Based on the hourly O monitoring data from 2004 to 2015 of Beijing, a comprehensive discussion on the characteristics of O concentration at a background station Dingling in Beijing was conducted. The results showed that the annual concentration of O1h was increasing with a growth rate of 4.40 μg·m while the annual concentration of O8h was decreasing with annual average rates of -1.