Publications by authors named "Jiarong Guo"

Aim: To evaluate the clinical efficacy and imaging outcomes of a domestically produced orthopedic surgical robot for total knee arthroplasty and to explore its applicability in patients with varying degrees of deformity.

Methods: This study retrospectively included 120 patients who underwent TKA at our hospital between February 2023 and June 2024. The patients were divided into a control group (conventional TKA surgery) and an observation group (robot-assisted TKA surgery), with 60 patients in each group.

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Synaptotagmin 7 (SYT7), a member of the synaptotagmin family, exhibits high expression in various tumors and is closely associated with patient prognosis. The tight regulation of SYT7 expression assumes paramount significance in the progression of tumorigenesis. In this study, we detected a high GC content in the first 1000 bp of the promoter region of SYT7, suggesting a potential role of the G-quadruplex in its transcriptional regulation.

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Article Synopsis
  • Reactive oxygen species (ROS) are responsible for damaging DNA, leading to mutations that can cause cancer and tumor growth.
  • The study shows that ROS-related DNA damage increases the release of extracellular vesicles (EVs) that enhance cancer cell migration and invasion by promoting epithelial-mesenchymal transition (EMT).
  • A key player in this process is OGG1, which, when inhibited, can block EV release, reduce cancer progression, and suggests new therapeutic targets for treating cancer.
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This study investigated the mechanism of the extracellular matrix-mimicking hydrogel-mediated TGFB1/Nrf2 signaling pathway in osteoarthritis using bone marrow mesenchymal stem cell-derived exosomes (BMSCs-Exos). A GMOCS-Exos hydrogel was synthesized and evaluated for its impact on chondrocyte viability and neutrophil extracellular traps (NETs) formation. In an OA rat model, GMOCS-Exos promoted cartilage regeneration and inhibited NETs formation.

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Metal-organic frameworks (MOFs) with fit ligands and metals can be integrated into electrochemical biosensors for the detection of various biomolecules. In this study, we have synthesized novel magnetic MOF composites as electrocatalysts and constructed a novel biosensor for electrochemical detection of dopamine. The composites named FeO@ZIF-8@AuNPs-COOH are synthesized through layer-by-layer assembly.

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Exposure to environmental BaP or its metabolite BPDE causes trophoblast cell dysfunctions to induce miscarriage (abnormal early embryo loss), which might be generally regulated by lncRNAs. IL1B, a critical inflammatory cytokine, is closely associated with adverse pregnancy outcomes. However, whether IL1B might cause dysfunctions of BaP/BPDE-exposed trophoblast cells to induce miscarriage, as well as its specific epigenetic regulatory mechanisms, is completely unexplored.

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In this study, juvenile crayfish hatched from the same population were cultured in different growing environments: pond (), paddy field (), and aquaculture barrel (), and fed for 60 days. Crayfishes were selected randomly, females and males, 50 tails each from six groups (D1-♀, D1-♂, D2-♀, D2-♂, D3-♀, D3-♂) to measure the following morphological traits: full length (), body length (), chelicerae length (), chelicerae weight (), cephalothorax length (), cephalothorax width (), cephalothorax height (), eye spacing (), caudal peduncle length (), and caudal peduncle weight (). We found that the coefficient of variation (CV) of was the largest in each culture mode, and males (28.

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Article Synopsis
  • - Abnormal levels of long non-coding RNAs (lncRNAs) in trophoblast cells are linked to miscarriages, with one specific lncRNA identified as being highly expressed in tissues from patients experiencing recurrent miscarriages compared to healthy controls.
  • - This lncRNA inhibits the degradation of BBC3 (a protein involved in cell death), which leads to increased apoptosis (cell death) in trophoblast cells, both of which are associated with miscarriage.
  • - Knocking down this lncRNA in a mouse model of miscarriage was shown to reduce placental apoptosis and improve pregnancy outcomes, suggesting both the lncRNA and BBC3 could be potential targets for treatment of miscarriages.
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Defects of human trophoblast cells may induce miscarriage (abnormal early embryo loss), which is generally regulated by lncRNAs. Ferroptosis is a newly identified iron-dependent programmed cell death. Hypoxia is an important and unavoidable feature in mammalian cells.

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A 10-week growth experiment was conducted to assess the physiological response of spotted seabass () raised at moderate (27 °C) and high temperatures (33 °C) to different dietary available phosphorus (P) levels. Five diets with available P levels of 0.35, 0.

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Nano-impact electrochemistry (NIE) enables simple, rapid, and high-throughput biocoupling and biomolecular recognition. However, the low effective collision frequency limits the sensitivity. In this study, we propose a novel NIE sensing strategy amplified by the CRISPR-responsive DNA hydrogel and cascade DNA assembly.

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Human infections caused by Brucella (called brucellosis) are among the most common zoonoses worldwide with an estimated 500,000 cases each year. Since chronic Brucella infections are extremely difficult to treat, there is an urgent need for more effective therapeutics. As a facultative intracellular bacterium, Brucella is strictly parasitic in the host cell.

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Biomimetic structures to fabricate bioelectronic interfaces that allow sensors to electrically communicate with electrodes have potential applications in the development of biosensors. Herein, inspired by the structure feature of nitric oxide (NO) sensory protein, we constructed a biomimetically catalytic center, the histamine coordinated iron phthalocyanine (FePc), for efficient and sensitive detection of NO. In specific, NO is recognized by axial tethered FePc, and the oxidative signal of NO on FePc is converted into output signal through electrocatalytic oxidation.

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DNA viruses are increasingly recognized as influencing marine microbes and microbe-mediated biogeochemical cycling. However, little is known about global marine RNA virus diversity, ecology, and ecosystem roles. In this study, we uncover patterns and predictors of marine RNA virus community- and "species"-level diversity and contextualize their ecological impacts from pole to pole.

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The International Virus Bioinformatics Meeting 2022 took place online, on 23-25 March 2022, and has attracted about 380 participants from all over the world. The goal of the meeting was to provide a meaningful and interactive scientific environment to promote discussion and collaboration and to inspire and suggest new research directions and questions. The participants created a highly interactive scientific environment even without physical face-to-face interactions.

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Whereas DNA viruses are known to be abundant, diverse, and commonly key ecosystem players, RNA viruses are insufficiently studied outside disease settings. In this study, we analyzed ≈28 terabases of Global Ocean RNA sequences to expand Earth's RNA virus catalogs and their taxonomy, investigate their evolutionary origins, and assess their marine biogeography from pole to pole. Using new approaches to optimize discovery and classification, we identified RNA viruses that necessitate substantive revisions of taxonomy (doubling phyla and adding >50% new classes) and evolutionary understanding.

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Microbes drive myriad ecosystem processes, but under strong influence from viruses. Because studying viruses in complex systems requires different tools than those for microbes, they remain underexplored. To combat this, we previously aggregated double-stranded DNA (dsDNA) virus analysis capabilities and resources into 'iVirus' on the CyVerse collaborative cyberinfrastructure.

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Under the current situation of the rapid development of brain-like artificial intelligence and the increasingly complex electromagnetic environment, the most bionic and anti-interference spiking neural network has shown great potential in computing speed, real-time information processing, and spatiotemporal data processing. Spiking neural network is the core part of brain-like artificial intelligence, which realizes brain-like computing by simulating the structure of biological neural network and the way of information transmission. This article first summarizes the advantages and disadvantages of the five models, and analyzes the characteristics of several network topologies.

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Measurement of signal molecule is critically important for understanding living systems. Nitric oxide (NO) is a key redox signal molecule that shows diverse roles in virtually all life forms. However, probing into NO's activities is challenging as NO has restricted lifetime (<10 s) and limited diffusion distance (usually <200 μm).

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  • - The study investigates the prevalence of latent tuberculosis infection (LTBI) in healthy children and adolescents in Chengdu, China, given the high burden of tuberculosis in the country.
  • - A total of 5,667 participants (ages 2.4 to 18) were screened using the tuberculin skin test (TST), revealing an overall LTBI prevalence of 6.37%, with slightly higher rates in children under 5 years.
  • - The findings suggest that a 2-step screening approach, starting with TST at a positive threshold of 5 mm, is effective and underscores the need to include young populations in LTBI screening efforts.
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Background: Viruses influence global patterns of microbial diversity and nutrient cycles. Though viral metagenomics (viromics), specifically targeting dsDNA viruses, has been critical for revealing viral roles across diverse ecosystems, its analyses differ in many ways from those used for microbes. To date, viromics benchmarking has covered read pre-processing, assembly, relative abundance, read mapping thresholds and diversity estimation, but other steps would benefit from benchmarking and standardization.

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  • Scientists studied the amount and types of antibiotic resistance genes (ARGs) in soil from different ecosystems like the Alaskan tundra, Midwestern prairie, and Amazon rainforest, especially looking at how farming affects these genes.
  • They found a lot of different ARGs (242 types) in the soil, mainly from certain bacteria, and did not notice much difference in ARGs when comparing natural prairie soil to soil from long-term farms.
  • Finally, they discovered that the specific types of ARGs in soil were quite different from those found in bacteria that cause infections in humans, but the bacteria in the soil impacted the types of ARGs present.
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BPDE (benzo(a)pyren-7,8-dihydrodiol-9,10-epoxide), a metabolite of environmental carcinogenic BaP, weakens the migration and invasion of human villous trophoblast cells and may further induce miscarriage. However, the underlying mechanisms remain largely unknown. In this study, we identified that in trophoblast Swan 71 and HTR-8/SVneo cells, miR-hz02 upregulates the level of lnc-HZ02, which inhibits the expression of an RNA-binding protein HuR.

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Environmental BaP (benzo(a)pyrene) and its metabolite BPDE (benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide) inhibit proliferation of human villous trophoblast cells, which might further induce recurrent miscarriage (RM). However, the underlying mechanisms remain largely unknown. In this work, we identified a novel lncRNA HZ01 (lnc-HZ01) that is up-regulated in both RM tissues and BPDE-exposed trophoblast cells.

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