Publications by authors named "Xiao Junjie"

(1) Background: Cashmere goats, as one of the characteristic species, are rich in genetic resources. Protecting and rationally utilizing these genetic resources is of great significance for the genetic improvement of cashmere goats. (2) Methods: In this study, tissue samples were collected from , which included the Arbas type (); Erlangshan type (); Alashan type (), (), and ().

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Background: Determining the benign or malignant status of indeterminate pulmonary nodules (IPN) with intermediate malignancy risk is a significant clinical challenge. Oral microbiota-lung cancer interactions have qualified oral microbiota as a promising non-invasive predictive biomarker in IPN.

Materials And Methods: Prospectively collected saliva, throat swabs, and tongue coating samples from 1040 IPN patients and 70 healthy controls across three hospitals.

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Introduction: Acute lung injury (ALI) and its subsequent progression to acute respiratory distress syndrome (ARDS) are severe respiratory conditions. They are marked by rapid lung function deterioration and extensive pulmonary inflammation, often resulting in critical patient outcomes. Alveolar macrophages (AMs) and monocyte-derived macrophages (MDMs) are two distinct subsets of lung macrophages present in the alveoli during ALI.

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Background: The aim of this study was to explore the microbial variations and biomarkers in the oral environment of patients with persistent pulmonary nodules (pPNs) and to reveal the potential biological functions of the salivary microbiota in pPNs.

Materials And Methods: This study included a total of 483 participants (141 healthy controls and 342 patients with pPNs) from June 2022 and January 2024. Saliva samples were subjected to sequencing of the V3-V4 region of the 16S rRNA gene to assess microbial diversity and differential abundance.

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Article Synopsis
  • DFT (M06-2X) calculations reveal the mechanism of NHC-catalyzed [3 + 3] cycloaddition involving enals and aminoacrylates, starting with NHC binding to an enal and leading to a series of intermediates.
  • The critical step in the reaction is the formation of a new C-C bond in the acyl azolium intermediate, which dictates the stereoselectivity, favoring the -face addition and producing a specific -configuration.
  • The final product, dihydropyridinone, shows a calculated enantiomeric excess of 99.1%, closely matching experimental results, with enantioselectivity linked to strong interactions in the transition state.
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In December 2022, China ceased the zero-COVID-19 policy, resulting in an increase in hospitalizations and deaths due to COVID-19, particularly among the elderly population. Predicting non-survivors aims to identify high-risk patients and enable targeted interventions to improve survival rates. Additionally, understanding factors affecting prognosis provides essential insights for further research and optimization of treatment strategies.

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Force-sensing biophysical cues in microenvironment, including extracellular matrix performances, stretch-mediated mechanics, shear stress and flow-induced hemodynamics, have a significant influence in regulating vascular morphogenesis and cardiac remodeling by mechanotransduction. Once cells perceive these extracellular mechanical stimuli, Piezo activation promotes calcium influx by forming integrin-adhesion-coupling receptors. This induces robust contractility of cytoskeleton structures to further transmit biomechanical alternations into nuclei by regulating Hippo-Yes associated protein (YAP) signaling pathway between cytoplasmic and nuclear translocation.

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  • Researchers have identified a specific circular RNA, circDdb1, that plays a significant role in causing skeletal muscle atrophy, which is often linked to aging and various diseases.
  • CircDdb1 levels are significantly increased during muscle atrophy, and adding it artificially leads to more atrophy, whereas its inhibition can prevent muscle loss caused by different factors.
  • The study also finds that circDdb1 regulates protein translation via its interaction with eukaryotic elongation factor 2 (eEF2) and suggests that targeting circDdb1 could serve as a new therapeutic approach to combat muscle atrophy.
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Pulmonary arterial hypertension (PAH) is associated with aberrant pulmonary vascular smooth muscle cell (PASMC) function and vascular remodeling. MiR-30d plays an important role in the pathogenesis of several cardiovascular disorders. However, the function of miR-30d in PAH progression remained unknown.

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Background: Resistance exercise leads to improved muscle function and metabolic homeostasis. Yet how circadian rhythm impacts exercise outcomes and its molecular transduction remains elusive.

Methods: Human volunteers were subjected to 4 weeks of resistance training protocols at different times of day to assess training outcomes and their associations with myokine irisin.

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Exercise training (ET) is an important non-drug adjuvant therapy against many human diseases, including cardiovascular diseases. The appropriate ET intensity induces beneficial adaptions and improves physiological function and cardiopulmonary fitness. The mechanisms of exercise-induced cardioprotective effects are still not fully understood.

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Advancements in flexible electronic technology, especially the progress in foldable displays and under-display cameras (UDC), have created an urgent demand for high-performance colorless polyimide (CPI). However, current CPIs lack sufficient heat resistance for substrate applications. In this work, four kinds of rigid spirobifluorene diamines are designed, and the corresponding polyimides are prepared by their condensation with 5,5'-(perfluoropropane-2,2-diyl) bis(isobenzofuran-1,3-dione) (6FDA) or 9,9-bis(3,4-dicarboxyphenyl) fluorene dianhydride (BPAF).

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Article Synopsis
  • RNA N-methyladenosine (mA) methylation is a key modification in eukaryotic RNA that regulates RNA metabolism and is involved in various diseases.
  • Non-coding RNAs (ncRNAs) can be influenced by mA methylation, which is important for understanding their biological roles and potential clinical applications.
  • The review highlights recent research on the interaction between mA modifications and different types of ncRNAs, as well as the challenges and future prospects of utilizing mA in therapeutic strategies for human diseases.
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To elucidate the mechanism and origins of chemo- and enantioselectivities of the reaction between aliphatic aldehydes and hydrazones catalyzed by triazolium-derived NHC, density functional theory computations have been performed. According to our calculated results, the whole catalytic cycle for the formation of dihydropyridazinones proceeds via the initial nucleophilic addition of NHC to an aliphatic aldehyde, followed by the concerted intramolecular proton transfer and C-Cl bond cleavage. Subsequent deprotonation generates an enolate intermediate.

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Background: Exercise-induced physiological cardiac growth regulators may protect the heart from ischemia/reperfusion (I/R) injury. Homeobox-containing 1 (Hmbox1), a homeobox family member, has been identified as a putative transcriptional repressor and is downregulated in the exercised heart. However, its roles in exercise-induced physiological cardiac growth and its potential protective effects against cardiac I/R injury remain largely unexplored.

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Article Synopsis
  • Exercise training enhances heart function and helps protect it from age-related decline and injuries.
  • Recent research emphasizes not just the role of cardiomyocytes (heart muscle cells) but also the significant contributions from other cells and systems beyond the heart.
  • The review covers various mediators of exercise benefits, including factors related to heart cells and broader influences like metabolism, inflammation, the microbiome, and aging, detailing the molecular mechanisms involved.
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Physical exercise has been widely acknowledged as a beneficial lifestyle alteration and a potent non-pharmacological treatment for heart disease. Extensive investigations have revealed the beneficial effects of exercise on the heart and the underlying mechanisms involved. Exercise is considered one of the key factors that can lead to epigenetic alterations.

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Article Synopsis
  • - Exercise enhances heart function and metabolism, but its impact on protein modifications like lactylation is not fully understood.
  • - The study finds that lactate regulates changes in heart muscle cells (cardiomyocytes) by increasing protein lactylation and levels of the RNA-binding protein YTHDF2, which affects cell size and apoptosis during stress conditions.
  • - Targeting lactylation or inhibiting YTHDF2 could provide new treatment strategies for heart diseases by promoting healthy cardiac adaptations to exercise.
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Exercise can stimulate physiological cardiac growth and provide cardioprotection effect in ischemia/reperfusion (I/R) injury. MiR-210 is regulated in the adaptation process induced by exercise; however, its impact on exercise-induced physiological cardiac growth and its contribution to exercise-driven cardioprotection remain unclear. We investigated the role and mechanism of miR-210 in exercise-induced physiological cardiac growth and explored whether miR-210 contributes to exercise-induced protection in alleviating I/R injury.

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Background: Doxorubicin is an effective chemotherapeutic agent, but its use is limited by acute and chronic cardiotoxicity. Exercise training has been shown to protect against doxorubicin-induced cardiotoxicity, but the involvement of immune cells remains unclear. This study aimed to investigate the role of exercise-derived B cells in protecting against doxorubicin-induced cardiotoxicity and to further determine whether B cell activation and antibody secretion play a role in this protection.

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