Publications by authors named "Xiao-Qing Chen"

2-Alkylindoles are privileged motifs that serve as versatile intermediates and building blocks in synthetic and medicinal chemistry. Herein, we report a photoinduced, EDA-complex-enabled C2-benzylic C(sp)-H alkylation of indoles with bromides through radical cross-coupling. This developed protocol provides facile access to 2-alkylindoles from structurally varied 2-methylindoles and bromides under mild reaction conditions with simple operation.

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A plethora of factors contribute to cognitive impairment in Alzheimer's disease (AD), including neuroinflammation, synaptic dysfunction and gene alteration. In search of transcription factors controlling dysregulated genes in AD, we identified that the histone demethylase PHF2 (KDM7C) was a top-ranking candidate. Significant upregulation of PHF2 was found in AD human postmortem tissues, iPSC-derived neurons from AD patients, and a familial AD mouse model (5xFAD).

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In advanced multi-static radar (MSR), multidimensional information from target echo signals is collected by different receivers to enable precise localization using various algorithms. Owing to its efficient target localization and tracking capability, MSR has found wide applications in sensing, military operations, aviation, and aerospace. Multi-static nature of MSR also makes it difficult to counter.

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A metal-free, photosensitized 1,2-imino-thiocarbamation of olefins was developed using a custom-designed bifunctional reagent, diphenylmethanone -dimethylcarbamothioyl oxime. A broad range of olefins with diverse electronic features were successfully transformed to the corresponding β-imino-thioesters, with yields ranging from moderate to high. This protocol offers several advantages, including metal-free process, 100% atom economy, simple operation, and scalability.

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Background: Neonatal acute kidney injury (AKI) is associated with poor clinical outcomes. Consequently, this study was designed to explore the prenatal and postnatal risk factors in Chinese extremely low gestational age neonates (ELGANs).

Methods: This retrospective study included all ELGANs (born between 23-0/7 and 27-6/7 weeks of gestation) hospitalized from January 2019 to December 2022.

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Tritrichomonas foetus and Pentatrichomonas hominis are two causative agents of trichomoniasis in dogs and cats, manifesting primarily through diarrhea symptoms. However, information on the prevalence and identification of T. foetus and P.

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Background: Circular RNAs (circRNAs) have been documented to regulate neonatal acute kidney injury (AKI). Based on previous RNA-sequence findings, circPICALM exhibited significantly disparate expression between AKI newborns and Controls. This study aimed to provide further insights into the regulatory mechanism of circPICALM in neonatal AKI.

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Programmable metasurfaces (PMs), also called reconfigurable intelligent surfaces (RISs), are planar structures capable of dynamically manipulating electromagnetic waves in real-time. Regarded as a key enabling technology for implementing smart wireless propagation environments, PMs/RISs also serve as an ideal supporting platform for integrated sensing and communication (ISAC). Here, we propose two ISAC schemes based on a special type of PMs/RISs: space-time-coding metasurfaces (STCMs).

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Background: High anisometropia is often accompanied by amblyopia. One percent atropine penalization is an important treatment for anisometropic amblyopia and is as effective as occlusion therapy. On the other hand, 1% atropine had the strongest effect on controlling refractive error and axial length (AL) changes in myopic patients.

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Article Synopsis
  • Nonalcoholic fatty liver disease (NAFLD) is characterized by excessive fat in liver cells and worsened by gut bacteria and bile acid issues.
  • This study evaluated the effects of Ilex hainanensis extract (IHA), a traditional medicine claimed to lower blood pressure and cholesterol, on NAFLD in mice.
  • Results showed that IHA reduced weight, liver injury markers, improved lipid profiles, and positively influenced gut bacteria and bile acid metabolism, suggesting its potential for treating NAFLD.
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The sensitive, convenient, and visual detection of low-concentration disease markers in biological samples has always been a priority in disease diagnosis. However, existing research has been problematic due to complex operation and unsatisfactory sensitivity. Consequently, an "explosive" signal amplification platform based on Au/Pt@ZIF-90 was developed for sensitive visual detection of disease markers.

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Insomnia is one of the most common sleep-related diseases. In traditional Chinese medicine, Flos daturae has been used as a traditional herbal totreatment of sizens of diseases. The research objective was to investigate the sedative and hypnotic effects of Flos Daturae.

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Objective: In this study, we aimed to identify differentially expressed heat shock protein (HSP) profiles in the villi and decidua from patients with early missed abortion (EMA).

Methods: By using high-throughput and high-precision parallel reaction monitoring (PRM)-based targeted proteomics techniques, this study examined the abundance of HSPs in the villi and decidua of 10 patients with EMA and 10 controls. Moreover, the abundance of 3 HSPs in the villi of another 22 patients with EMA and 22 controls was verified with Western blotting and immunohistochemistry (IHC).

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Pegylated liposomal doxorubicin (PLD) has excellent therapeutic efficacy in the treatment of cancers, but can cause serious adverse reactions such as hand-foot syndrome (HFS). Our previous research suggests that both PLD-induced HFS may be associated with injury to tight junctions (TJs) in the skin and that calcium dobesilate (CaD) can alleviate HFS. However, the underlying molecular mechanism is not well understood.

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After spinal cord injury (SCI), local inflammatory response and fibrous scar formation severely hinder nerve regeneration. Berberine (Ber) has a powerful regulatory effect on the local microenvironment, but its limited solubility and permeability through the blood-brain barrier severely limit its systemic efficacy. Human umbilical cord mesenchymal stem cells (hUC-MSCs)-derived small extracellular vesicles (sEVs) are natural nanocarriers with high cargo loading capacity, and can cross the blood-brain barrier.

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Male infertility is a global concern, with a noticeable increase in the decline of spermatogenesis and sperm quality. However, there are limited clinically effective treatments available. This study aimed to investigate the potential effectiveness of puerarin in treating male infertility, which leads to gonadal changes.

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Bronchopulmonary dysplasia (BPD) causes high morbidity and mortality in infants, but no effective preventive or therapeutic agents have been developed to combat BPD. In this study, we assessed the expression of MALAT1 and ALOX5 in peripheral blood mononuclear cells from BPD neonates, hyperoxia-induced rat models and lung epithelial cell lines. Interestingly, we found upregulated expression of MALAT1 and ALOX5 in the experimental groups, along with upregulated expression of proinflammatory cytokines.

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The coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused many significant changes to all aspects of day to day life. The disease has spread and reached pandemic proportions. The principle route of transmission is the respiratory route.

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Objectives: To investigate the distribution characteristics and correlation of intestinal and pharyngeal microbiota in early neonates.

Methods: Full-term healthy neonates who were born in Shanghai Pudong New Area Maternal and Child Health Hospital from September 2021 to January 2022 and were given mixed feeding were enrolled. The 16S rRNA sequencing technique was used to analyze the stool and pharyngeal swab samples collected on the day of birth and days 5-7 after birth, and the composition and function of intestinal and pharyngeal microbiota were analyzed and compared.

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Glutaredoxins (Grxs) are ubiquitous antioxidant proteins involved in many molecular processes to protect cells against oxidative damage. Here, we study the roles of Grxs in the pathogenicity of Toxoplasma gondii. We show that Grxs are localized in the mitochondria (Grx1), cytoplasm (Grx2), and apicoplast (Grx3, Grx4), while Grx5 had an undetectable level of expression.

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Background: The widespread occurrence of syphilis remains a global public health problem. Although penicillin has been recommended as the first-line therapy for syphilis for more than 70 years, treatment failure occurs in 10-20% of patients with early syphilis. Recent studies have reported varied single-nucleotide polymorphisms (SNPs) of related to penicillin resistance.

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Many RNA modifications have been detected in rRNA, tRNA and small noncoding RNA (sncRNA) as well as in low-abundance RNA species such mRNA. Although RNA modifications play roles in many cellular and biological processes in various domains of life, knowledge about the diversity and role of RNA modifications in Toxoplasma gondii is limited. In this study, RNA modifications in three T.

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Tinea capitis is an important superficial fungal infection with a global distribution. It mainly affects prepubertal children and is more common in males. Anthropophilic and zoophilic dermatophytes are responsible for most infections.

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This pilot study aimed to explore the effectiveness and safety of dexibuprofen suppository in the treatment of PDA in preterm infants. Preterm infants with gestational age <34 weeks and color Doppler echocardiographic evidence of hemodynamically significant PDA (hs PDA) with systemic hypoperfusion was intended to be included into this study since January 2020. As of January 1, 2021, this trial had recruited 87 preterm infants who met the inclusion criteria.

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