Publications by authors named "Lijun Ren"

Soil is the foundation of terrestrial ecosystems and a critical resource for agricultural activities. This study investigated internal mechanism and interaction of heavy metals, pesticides (atrazine, pyrimazole and chlorpyrifos) and microplastics in soil. Specifically, certain sampling points exhibited elevated levels of individual heavy metals (Cd, Cr, Zn), exceeding the screening values, while both microplastics and pesticides demonstrated high variability, increasing the potential ecological risks.

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  • A new asexual strain has been isolated with mycelium used to create soft capsules for treating body damage from low-dose ionizing radiation.
  • The study conducted tests to evaluate the toxicity of these soft capsules, finding no toxic symptoms in rats at doses up to 10,000 mg/kg in a single dose.
  • In 28-day repeated dose tests, various dosages (90, 360, and 1440 mg/kg/day) also showed no significant toxic effects, indicating that soft capsules are relatively safe for consumption.
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  • The study aimed to assess the toxicity of silica nanoparticles (SiNPs) in Sprague Dawley rats over a 94-day period with different dosages.
  • Rats were given doses of SiNPs (0, 125, 250, and 500 mg/kg/day), and after 30 days of stopping treatment, their recovery was also monitored.
  • The results showed no fatalities or significant adverse effects at any of the tested dosages, establishing 500 mg/kg/day as the No Observed Adverse Effect Level (NOAEL) for oral SiNPs in this study.
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Drought tolerance and plant growth are critical factors affecting rice yield, and identifying genes that can enhance these traits is essential for improving crop resilience and productivity. Using a () mutant of the rice variety Huanghuazhan (HHZ) generated by radiation mutagenesis, we discovered a novel gene, , which plays a dual role in plant biology: it acts as a positive regulator of growth and development, but as a negative regulator of drought resistance. The mutant displayed a marked reduction in plant growth and seed setting rate, yet exhibited an unexpected advantage in terms of drought tolerance.

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  • Cronkhite-Canada syndrome (CCS) is a rare, nonhereditary condition characterized by gastrointestinal polyps, ectodermal changes, and symptoms such as hair loss, skin pigmentation, and malnutrition, predominantly affecting middle-aged and older males.* -
  • The case study involves a 72-year-old female who experienced severe gastrointestinal issues, which led to the discovery of multiple polyps through endoscopic examinations after her treatment for intestinal obstruction.* -
  • Following a comprehensive treatment plan that included medications and nutritional support, the patient showed significant improvement in symptoms, with reduced diarrhea and a notable decrease in the number and size of polyps upon follow-up examination.*
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  • Flexible electronics, particularly flexible pressure sensors, are gaining attention for applications in electronic skin and health monitoring, requiring advancements in piezoelectric sensor sensitivity and stability.
  • This research utilized polylactic acid (PLA) for flexibility and tetragonal barium titanate (BTO) for enhanced electrical properties, creating a composite film that showed a peak output voltage of 22.57 V and current of 3041 nA.
  • The sensor demonstrated excellent durability and linear pressure response over extended use, showing a sensitivity of 0.176 V/kPa, indicating its potential in motion detection and improving human-computer interaction.
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  • Lymphopenia, or low lymphocyte count, is linked to poor short-term outcomes in patients with anti-MDA5 positive dermatomyositis and interstitial lung disease (MDA5 + DM-ILD).
  • A study analyzing 263 patients found that lower lymphocyte counts were associated with higher risk of death within one month, particularly when lymphocyte levels declined over time.
  • Dynamic changes in lymphocyte levels provide a better indication of disease progression and prognosis than just looking at initial lymphocyte counts at baseline.
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The effects of XQ528 tartrate on the embryonic and fetal development of fertile Sprague-Dawley (SD) rats, along with their embryos and littermates, were evaluated using an embryo-fetus developmental toxicity assay. fertile SD rats exhibited no significant general toxic effects when administered doses of 0.25, 1.

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DNAJA1 is a member of type I DnaJ proteins, which is essential for spermatogenesis and male fertility. However, its expression pattern in the testes and its impact on spermatogenesis remains unclear. Our study aimed to elucidate the mechanism of action of DNAJA1.

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Heat stroke (HS) is a critical condition with extremely high mortality. Heat acclimation (HA) is widely recognized as the best measure to prevent and protect against HS. Preventive administration of oral rehydration salts III (ORSIII) and probiotics have been reported to sustain intestinal function in cases of HS.

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  • - Jinmao Jiedu granule is a traditional Chinese medicine made from specific plants and chicken gizzard, commonly used as a supplementary treatment for cancer, especially liver cancer.
  • - A study was conducted to evaluate the potential toxicity of these granules over a 28-day period, using Sprague-Dawley rats and three different dosage levels.
  • - Results showed no harmful effects on the rats, indicating that the No Observed Adverse Effect Level (NOAEL) for the granules is above 11.40 g/kg/day, meaning they were safe at the tested doses.
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Cohesin is a multi-subunit protein that plays a pivotal role in holding sister chromatids together during cell division. Sister chromatid cohesion 3 (SCC3), constituents of cohesin complex, is highly conserved from yeast to mammals. Since the deletion of individual cohesin subunit always causes lethality, it is difficult to dissect its biological function in both mitosis and meiosis.

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  • Multiwalled carbon nanotubes (MWCNTs) have various applications but raise toxicity concerns due to potential lung inflammation from inhalation.
  • Celastrol, a natural anti-inflammatory plant compound, significantly reduced inflammatory cells and cytokine levels in mice lungs exposed to MWCNTs.
  • The study revealed that celastrol works by inhibiting the NF-κB-signaling pathway, showcasing its potential as a treatment to prevent MWCNT-related lung inflammation.
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  • Oceans are filled with plastic waste, and it's hard to keep track of it on complicated man-made coastlines.
  • Researchers used drones to take pictures of the Dongjiang Port artificial coastline in China to find plastic waste.
  • They improved a computer program called YOLOv8 to detect plastic more accurately and found more plastic items while reducing mistakes of confusing people for plastic, making it easier to monitor these areas in the future.
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High-rate lithium/sodium ion batteries or capacitors are the most promising functional units to achieve fast energy storage that highly depends on charge host materials. Host materials with lamellar structures are a good choice for hybrid charge storage hosts (capacitor or redox type). Emerging layered transition metal carbo-chalcogenides (TMCC) with homogeneous sulfur termination are especially attractive for charge storage.

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Idiopathic pulmonary fibrosis (IPF) is a life-threatening interstitial lung disease. Identifying biomarkers for early diagnosis is of great clinical importance. The epididymis protein 4 (HE4) is important in the process of inflammation and fibrosis in the epididymis.

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Endothelial barrier disruption plays a key role in the pathophysiology of heat stroke (HS). Knockout of DNAJA1 (DNAJA1‑KO) is thought to be protective against HS based on a genome‑wide CRISPR‑Cas9 screen experiment. The present study aimed to illustrate the function of DNAJA1‑KO against HS in human umbilical vein endothelial cells.

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Many oncology drugs have been found to induce cardiotoxicity in a subset of patients, which significantly limits their clinical use and impedes the benefit of lifesaving anticancer treatments. Human induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs) carry donor-specific genetic information and have been proposed for exploring the interindividual difference in oncology drug-induced cardiotoxicity. Herein, we evaluated the inter- and intraindividual variability of iPSC-CM-related assays and presented a proof of concept to prospectively predict doxorubicin (DOX)-induced cardiotoxicity (DIC) using donor-specific iPSC-CMs.

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The active component of copper-based materials for electrocatalytic nitrate reduction to ammonia (NRA) remains unclear due to the susceptibility of oxidation of copper. Using density functional theory calculations, NRA pathways are evaluated on low-index crystal surfaces CuO (111), CuO (111), and Cu (111) at different pH. CuO (111), with abundant undercoordinated Cu atoms on the surface, shows easier adsorption of NO than Cu (111) or CuO (111).

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  • The study examines toxic metal contamination in river sediments, focusing on the Xiaoqing River and its potential risks to ecosystems and human health.
  • It utilizes various analytical methods, including the geo-accumulation index and principal component analysis, to evaluate pollution levels and sources over time, finding that mercury is the major contaminant.
  • The research identifies different pollution source trends between 1996-2010 and 2011-2020, highlighting the significant influence of factors like water pH and population density on metal distribution in the river sediments.
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  • The study aims to analyze the lingering effects of lumbago and leg pain in patients with contained and non-contained lumbar disc herniation after undergoing transforaminal endoscopic treatment, while also investigating the roles of specific biochemical markers (HIF-1α and TRPV1).
  • A total of 68 patients, aged 26 to 67, were grouped based on the integrity of their outer fibrous layer during surgery, with data collected on various health and pain indicators such as mRNA expression levels and pain scales.
  • A control group of 17 patients who had open surgery for other spinal issues was also included to compare findings, focusing on various receptors and factors that may relate to pain management post-surgery.
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Tea is a popular beverage with characteristic functional and flavor qualities, known to be rich in bioactive metabolites such as tea polyphenols and theanine. Recently, tea varieties with variations in leaf color have been widely used in agriculture production due to their potential advantages in terms of tea quality. Numerous studies have used genome, transcriptome, metabolome, proteome, and lipidome methods to uncover the causes of leaf color variations and investigate their impacts on the accumulation of crucial bioactive metabolites in tea plants.

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We detected the major QTL- qSR.A07, which regulated stem strength and was fine-mapped to 490 kb. BnaA07G0302800ZS and BnaA07G0305700ZS as the candidate functional genes were identified at qSR.

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Objective: This study aimed to investigate the role and mechanism of microRNA (miR)-193a in promoting apoptosis of retinal neuronal cells in early diabetic (DM) rats.

Methods: Seventy-two male SD-grade rats were selected to establish a DM model by intraperitoneal injection of streptozotocin (STZ), and randomly divided into a control group (blank control group), a DM group (diabetic model group), a DM+miR-NC inhibitor group (miR-193a inhibition negative control group), a DM+miR-193a inhibitor group (miR-193a inhibitor group), DM+miR-NC mimic group (miR-193a overexpression negative control group), DM+miR-193a mimic group (miR-193a overexpression group), with12 rats in each group.

Results: The miR-193a expression, apoptosis rate, and Bax, Caspase3, and Caspase9 protein expression levels were elevated, and Bcl-2 protein expression was decreased in the retinal tissues of DM rats and high glucose-induced rat retinal neuronal cells, while miR-193a inhibitors reversed these processes.

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  • Mortality rates after pancreaticoduodenectomy (PD) have improved, but delayed gastric emptying (DGE) remains a common complication.
  • A study analyzed data from 114 patients who underwent PD to find risk factors for DGE, revealing that 28.9% developed this issue post-surgery.
  • Key risk factors identified include postoperative abdominal complications, preoperative systemic diseases, and early postoperative albumin levels.
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