Publications by authors named "Kai-Li Ma"

This work established the cytotoxic, antioxidant and anticancer effects of copper nanoparticles (CuNPs) manufactured with fennel extract, especially on non-small cell lung cancer (NSCLC) as well. CuNPs caused cytotoxicity in a dose-dependent manner for two NSCLC cell lines, A549 and H1650. At 100 μg/ml, CuNPs reduced cell viability to 70% in A549 cells and 65% in H1650 cells.

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  • The study examined the impact of continuous cropping on the physical and chemical properties of rhizosphere soil, soil microbial activity, and community characteristics, comparing it to a five-year fallow treatment.
  • Key findings revealed that as years of continuous cropping increased, organic carbon, total phosphorus, and total nitrogen levels rose, while soil pH decreased; significant changes in soil salt content and conductivity were also noted after three and four years of cropping.
  • Microbial community dynamics shifted with more continuous cropping, as bacterial diversity and abundance decreased, while fungal diversity increased, leading to stronger antagonistic interactions among bacteria and synergistic effects among fungi.
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  • - This study explored how difloxacin, a drug, is processed in crucian carp after a single oral dose of 20 mg/kg body weight, using plasma sampling and high-performance liquid chromatography (HPLC) for analysis.
  • - A population model was created using a nonlinear mixed effects approach, which showed that only covariance, not body weight, influenced the drug's pharmacokinetic parameters like absorption rate, volume of distribution, and clearance.
  • - Results indicated that the current dosing may not be sufficient to combat certain pathogens, suggesting further research on pathogen MIC values and pharmacodynamics to find an effective treatment dose for infections in crucian carp.
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The current study aimed to explore the pharmacokinetics of danofloxacin in non-laying hens after a single oral (PO) and intravenous (IV) dose, both at 5 mg/kg body weight (BW). Eighteen 13-week-old healthy hens were equally and randomly divided into two groups. After both doses, blood samples (approximately 1 ml) were collected at different time points.

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  • This study investigated how danofloxacin is processed in Yellow River carp after a single oral dose of 10 mg/kg body weight, focusing on its population pharmacokinetics.
  • Researchers collected plasma samples at various time points to measure drug concentrations using HPLC, finding that danofloxacin could be detected for up to 144 hours post-administration.
  • The population pharmacokinetic model developed highlighted the variability in absorption, distribution, and clearance, suggesting that the current dosing effectively inhibits certain pathogens, but further research is needed to confirm its antibacterial efficacy.
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The pharmacokinetics and tissue distribution of enrofloxacin were determined in Yellow River carp () reared at 20°C after single oral administration of enrofloxacin at 10 mg·kg body weight (BW). Plasma, bile, and different tissue samples, including liver, kidney, gill, gut, and skin-muscle, were collected at predetermined times points. An HPLC method was developed to simultaneously determine the concentrations of enrofloxacin and its metabolite, ciprofloxacin.

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Neuroinflammation is closely related to the pathogenesis of neurodegenerative diseases. Activation of microglia, the resident immune cells in CNS, induces inflammatory responses, resulting in the release of neurotoxic molecules, which favors neuronal death and neurodegeneration. Nuclear receptor-related 1 (Nurr1) protein, one of the orphan nuclear receptor superfamilies, is an emerging target for neuroprotective therapy.

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Previous studies have shown that abnormal aggregation of alpha-synuclein (α-syn) protein is a major trigger of neurodegenerative diseases. The expression level of α-syn in different brain regions and the disease-susceptible regions varies with the development of the disease. The expression pattern of the α-syn protein in mouse brain has been precisely described in the literature.

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  • A study identified a unique HIV strain, a recombinant of CRF01_AE and CRF07_BC, from a male in Yan'an city, China, highlighting the increasing prevalence of such recombinants among the sexual population.
  • The analysis revealed the recombinant consists of six fragments split by five breakpoints across specific genes, with certain segments clustering within a lineage predominantly seen among men who have sex with men (MSM) in northern China.
  • The findings emphasize the necessity of ongoing monitoring of HIV-1 molecular epidemiology in high-risk groups to better understand the genetic diversity and transmission dynamics of the virus in the area.
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Context: The uric acid metabolism pathway is more similar in primates and humans than in rodents. However, there are no reports of using primates to establish animal models of hyperuricaemia (HUA).

Objectives: To establish an animal model highly related to HUA in humans.

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Background: Several observational studies have investigated the association of insomnia with psychiatric disorders. Such studies yielded mixed results, and whether these associations are causal remains unclear. Thus, we aimed to identify the causal relationships between insomnia and five major psychiatric disorders.

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  • This study investigated how sleep quality impacts job burnout among 3,832 coal mine workers in Shanxi Province, China.
  • Researchers found that better sleep quality is linked to a significantly lower risk of job burnout, with lowered exhaustion and cynicism scores.
  • The findings were consistent across various models and indicated differences in the effect of sleep quality on burnout between male and female workers, suggesting potential areas for future research on interventions.
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  • - The study introduced a temperature staged anaerobic treatment (TSAT) system for effectively treating PTA wastewater, utilizing a thermophilic reactor (R1) and a mesophilic reactor (R2) at varying organic loading rates (OLRs).
  • - Results showed that the TSAT system was particularly efficient at OLRs below 4.45 kg COD/(m³·d), with distinct microbial communities identified in R1 and R2, dominated by Methanolinea and Methanosaeta, respectively.
  • - Functional analysis indicated significant differences in microbial capabilities between R1 and R2, where mesophilic conditions favored degradation of aromatic compounds, while thermophilic conditions supported biosynthesis and metabolism pathways. *
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  • The study investigated how personality traits affect quality of life (QOL) among coal miners and whether sleep quality plays a mediating role in this relationship.
  • A total of 3,090 coal mine workers from Shanxi province, China, were assessed using various questionnaires to evaluate personality traits, QOL, and sleep quality.
  • Findings showed that passive personality traits negatively influenced QOL through poor sleep quality, while active traits had a positive effect; however, the impact didn't differ significantly between surface and underground workers.
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The Chinese tree shrew (TS) has many unique advantages that make it suitable for use as an experimental animal model for human disease including moderate body size, low cost of feeding, short reproductive cycle and lifespan, and close phylogenetic relationship to primates. Our previous studies have shown that TS treated with the mitochondrial inhibitor MPTP displayed classic Parkinsonian symptoms. Additionally, the structure of TS alpha-synuclein (α-syn) is highly homologous to that found in humans.

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Parkinson's disease (PD) is a multi-factorial neurodegenerative disease. Abnormal α-synuclein protein aggregate and sustained microglia activation contribute to the pathogenic processes of PD. However, the relationship between α-synuclein and microglia-mediated neuroinflammation remains unclear.

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We report cryoglobulinaemia (CG) in a rhesus macaque whose serum sample was gel-like at <37°C and resolubilised upon warming. Mixed CG was diagnosed using serum protein electrophoresis and serum immunofixation electrophoresis. Renal damage and arthrophyma were observed during necropsy.

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Over recent years, thermophilic digestion was constantly focused owing to its various advantage over mesophilic digestion. Notably, the startup approach of thermophilic digester needs to be seriously considered as unsuitable startup ways may result in system inefficiency. In this study, one-step temperature increase startup strategy from 37 °C to 55 °C was applied to establish a thermophilic anaerobic system treating terephthalic acid (TA) contained wastewater, meanwhile, the archaeal and bacterial community compositions at steady periods of 37 °C and 55 °C during the experimental process was also compared using Illumina Miseq Sequencing.

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In order to investigate long-term effect of cefalexin (CFX) on the performance of expanded granular sludge bed (EGSB) system and microbial community structure, two 1.47 L EGSB reactors E1 and E2 were designed and run for 224 days treating with synthetic antibiotic wastewater. For the purpose of comparison, E1 was fed with synthetic antibiotic industry wastewater with CFX added as the test reactor, while, E2 was fed without any CFX added as the control reactor (E2).

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Potassium oxonate, a selectively competitive uricase inhibitor, produced hyperuricemia (HUA) in rodents in a previous study. In this study, we employed the tree shrew as an animal model to study potassium oxonate-induced HUA. The effect of allopurinol (ALLO), a uric acid reducer, was also examined in this model.

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Oxidative stress is thought to be involved in the development of Parkinson's disease (PD). We previously reported that 20C, a bibenzyl compound isolated from Gastrodia elata, possesses antioxidative properties, but its in-depth molecular mechanisms against rotenone-induced neurotoxicity remains unknown. Recent studies indicate that without intact DJ-1, nuclear factor erythroid 2-related factor (Nrf2) protein becomes unstable, and the activity of Nrf2-mediated downstream antioxidant enzymes are thereby suppressed.

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  • * Researchers successfully designed primers based on human α-syn and obtained the tree shrew α-syn cDNA via RT-PCR, revealing a nearly identical sequence to human α-syn but with some specific nucleotide variations.
  • * The analysis shows that the tree shrew α-syn protein shares a 97.1% similarity to the human version, with a conserved secondary structure and phosphorylation sites, suggesting that tree shrews may serve as a valuable model for studying α-synuclein-related
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To well understand the community structure and composition of mesophilic microorganisms in anaerobic system fed with PTA wastewater, an up-flow anaerobic fixed bed reactor was continuously run at 33 and 37 °C for 75 and 60 days, respectively. Both fluorescence in situ hybridization analysis and 454-pyrosequencing were applied to investigate the microbial distinction within mesophilic ranges. A preferable performance was achieved at 37 than 33 °C.

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