Publications by authors named "G-D Chen"

Background: High sodium intake is an important risk factor for hypertension and cardiovascular disease. However, the association between gut microbiota composition and metabolomic profiles with dietary sodium intake and blood pressure (BP) is not well-understood. The metabolome, microbiome, and dietary salt intervention (MetaSalt) study aimed to investigate microbial and metabolomic profiles related to dietary sodium intake and BP regulation.

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The π-facial selectivity of Diels-Alder cycloadditions of 5-monosubstituted cyclopentadienes is known experimentally and has been extensively studied computationally. Previous studies on 5-monosubstituted cyclopentadienes by the Burnell and Houk groups showed that facial selectivity arises principally from hyperconjugative aromaticity or antiaromaticity of polar groups that cause distortion of the cyclopentadiene; steric effects of nonpolar groups can also be important. We have now explored the stereoselective cycloaddition of 5,5-unsymmetrically substituted cyclopentadienes to an acyl nitroso dienophile reported by Kan and co-workers.

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Aims: Phthalates, which are recognized environmental endocrine-disrupting chemicals, are associated with thyroid hormone disruption. We aimed to evaluate the relationship of phthalate metabolites with thyroid function and thyroid homeostasis parameters in type 2 diabetes and to explore whether thyroid autoimmunity status and metformin, the most common antidiabetic drug, may influence such associations.

Methods: Concurrent urine and blood samples were collected from 639 participants with type 2 diabetes in the METAL (Environmental Pollutant Exposure and Metabolic Diseases in Shanghai) study.

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Article Synopsis
  • Researchers are investigating therapeutic monoclonal antibodies (mAbs) targeting different vulnerable sites on the SARS-CoV-2 spike protein to prevent the virus from escaping treatment and to enhance protection against variants.
  • They discovered several effective neutralizing antibodies that can be used in combination, showing strong protection in a mouse model of infection.
  • One specific RBD antibody, WRAIR-2125, was particularly effective against all major variants and, when used with other mAbs, helped prevent the virus from evading the immune response.
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Aim: Hydroxychloroquine (HCQ) is used to control proteinuria in IgA Nephropathy (IgAN) However, its efficacy and safety in pregnant IgAN patients remains unknown. This study aimed to verify the safety of HCQ in pregnant IgAN patients and compare renal function and pregnancy outcomes with those of patients not treated with HCQ.

Methods: We retrospectively reviewed medical records of all pregnant IgAN patients and singleton gestations at Peking University First Hospital from 2003-2021.

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Two serious public health challenges have emerged in the current COVID-19 pandemic namely, deficits in SARS-CoV-2 variant monitoring and neglect of other co-circulating respiratory viruses. Additionally, accurate assessment of the evolution, extent, and dynamics of the outbreak is required to understand the transmission of the virus. To address these challenges, we evaluated 533 samples using a high-throughput next-generation sequencing (NGS) respiratory viral panel (RVP) that includes 40 viral pathogens.

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Article Synopsis
  • This study explores time-resolved carbon-13 magnetic resonance spectroscopy (MRS) as a method for assessing how pyruvate metabolizes in the human brain, using hyperpolarized [1-C]pyruvate instead of traditional imaging techniques.
  • Researchers conducted MRS on healthy participants, measuring the production rates of lactate and other metabolites from pyruvate, and analyzed the relationship between the concentration of these signals and brain tissue types.
  • The findings suggest that using dynamic MRS with multichannel radiofrequency coils is a cost-effective and reliable method for investigating brain metabolism, with good reproducibility between sessions.
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Background: Although previous studies have found that maternal fish intake is associated with fetal growth, the role of freshwater fish intake remains unknown.

Objective: Our aim was to examine the relationships of freshwater fish and n-3 polyunsaturated fatty acids (PUFAs) intake with the risk of small for gestational age (SGA) in Chinese pregnant women.

Design: This was a prospective analysis of data from the Tongji Birth cohort in Wuhan, China, from 2018 to 2021.

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The beneficial role of yogurt on metabolic profile has been widely reported. Yet, few studies have intended to describe the integrated metabolic alterations in response to yogurt. Yogurt and milk (220 g/d) were given to 48 and 44 obese women with metabolic syndrome and nonalcoholic fatty liver disease for 24 weeks in a randomized controlled trial (registered at http://www.

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Vanillin and vanillic acid are two kinds of lignin pyrolysis products that are generated by biomass combustion. The gas-phase oxidation mechanisms of vanillin and vanillic acid initiated by OH/NO radicals were investigated by using density functional theory (DFT) at M06-2X/6-311+G(3df,2p)//M06-2X/6-311+G(d,p) level. The initial reactions of vanillin and vanillic acid with OH/NO radicals can be divided into two patterns: OH/NO addition and H-atom abstraction.

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Introduction: Pigment epithelium-derived factor (PEDF) is a multifunctional protein with anti-angiogenic, antioxidant and anti-inflammatory properties. PEDF is involved in the pathogenesis of diabetic retinopathy, but its exact role in diabetic kidneys remains unclear. P78-PEDF is an active peptide sequence consisting of 44 amino acids with biological activity similar to that of PEDF.

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The photoionization and dissociative photoionization of toluene have been studied using synchrotron radiation vacuum ultraviolet light with photon energy in the range of 8.50-25.50 eV.

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A crescentic lesion in renal biopsy could be segmental or circumferential, but the distribution and clinical implication of the circumferential crescents in immunoglobulin A nephropathy (IgAN) remains unknown. A total of 384 crescentic IgAN patients between 2011 and 2019 were included. The subjects were classified as the circumferential crescent who have at least one crescent involving ≥50% circumference of Bowman's capsule, otherwise as to the segmental crescent.

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A sequencing batch reactor-anaerobic sequencing batch reactor(SBR-ASBR) process was used to treat domestic sewage. In the SBR, the effects of the anoxic/aerobic time ratio and temperature on the realization of partial nitritation(PN) were investigated. In the ASBR, the effects of different COD/NO-N(C/N) ratios on the removal of nitrogen and carbon using anaerobic ammonia oxidation(ANAMMOX) and denitrification were studied.

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Background: Restless arms syndrome (RAS) is characterized by uncomfortable aching or burning sensations in the arms. RAS is regarded as an upper limb variant of restless legs syndrome (RLS). The lack of specific diagnostic criteria makes it difficult to recognize the RAS.

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Background: Essential oils (EOs) are extensively used in swine production because of their bioactive action in gut health. In addition, some EOs have the potential to reduce waste emission. The present study aimed to find an optimal combination of carvacrol, thymol and cinnamaldehyde to promote nitrogen utilization and reduce waste emission by a model in vitro and an animal study.

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Inflammatory responses rapidly detect pathogen invasion and mount a regulated reaction. However, dysregulated anti-pathogen immune responses can provoke life-threatening inflammatory pathologies collectively known as cytokine release syndrome (CRS), exemplified by key clinical phenotypes unearthed during the SARS-CoV-2 pandemic. The underlying pathophysiology of CRS remains elusive.

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Therapeutics for patients hospitalized with coronavirus disease 2019 (COVID-19) are urgently needed during the pandemic. Bamlanivimab is a potent neutralizing monoclonal antibody that blocks severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) attachment and entry into human cells, which could potentially lead to therapeutic benefit. J2W-MC-PYAA was a randomized, double-blind, sponsor unblinded, placebo-controlled, single ascending dose first-in-human trial (NCT04411628) in hospitalized patients with COVID-19.

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Background: The role of direct oral anticoagulants as compared with vitamin K antagonists for atrial fibrillation after successful transcatheter aortic-valve replacement (TAVR) has not been well studied.

Methods: We conducted a multicenter, prospective, randomized, open-label, adjudicator-masked trial comparing edoxaban with vitamin K antagonists in patients with prevalent or incident atrial fibrillation as the indication for oral anticoagulation after successful TAVR. The primary efficacy outcome was a composite of adverse events consisting of death from any cause, myocardial infarction, ischemic stroke, systemic thromboembolism, valve thrombosis, or major bleeding.

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Ethnopharmacological Relevance: Kaixinsan (KXS) decoction, as an herbal formula, was used to treat the diseases, such as insomnia, amnesia, emotional disorders in ancient china. It has been demonstrated to be active in various animal models resembling human depression with multitarget effects. However, effective verification on the clinical application of KXS is still lacking.

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We present limits on spin-independent dark matter-nucleon interactions using a 10.6 g Si athermal phonon detector with a baseline energy resolution of σ_{E}=3.86±0.

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Article Synopsis
  • A clinical trial investigated whether therapeutic-dose anticoagulation could improve outcomes for critically ill patients with severe Covid-19 compared to standard thromboprophylaxis.
  • The study found no significant difference in organ support-free days between the two groups, with the anticoagulation group showing a median of 1 day compared to 4 days for the usual-care group.
  • The trial was halted due to a high probability of futility, with similar hospital discharge survival rates and a slightly higher occurrence of major bleeding in the anticoagulation group.
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Background: Thrombosis and inflammation may contribute to the risk of death and complications among patients with coronavirus disease 2019 (Covid-19). We hypothesized that therapeutic-dose anticoagulation may improve outcomes in noncritically ill patients who are hospitalized with Covid-19.

Methods: In this open-label, adaptive, multiplatform, controlled trial, we randomly assigned patients who were hospitalized with Covid-19 and who were not critically ill (which was defined as an absence of critical care-level organ support at enrollment) to receive pragmatically defined regimens of either therapeutic-dose anticoagulation with heparin or usual-care pharmacologic thromboprophylaxis.

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Background: Gut microbiota plays an indispensable role in the treatment of inflammatory bowel disease (IBD) and colitis-associated cancer (CAC). As traditional medicinal fungi, previous studies have shown that Ophiocordyceps sinensis could better maintain intestinal health via promoting the growth of probiotics in vitro compared with Cordyceps militaris. However, the detailed pharmacological activities and clinical efficacy of O.

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The search for a safe and effective inhibitor of ferroptosis, a recently described cell death pathway, has attracted increasing interest from scientists. Two hydrolyzable tannins, chebulagic acid and chebulinic acid, were selected for the study. Their optimized conformations were calculated using computational chemistry at the B3LYP-D3(BJ)/6-31G and B3LYP-D3(BJ)/6-311 + G(d,p) levels.

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