Publications by authors named "Yong-mei Hu"

Naturally derived compounds show promise as treatments for microbial infections. Polyphenols, abundantly found in various plants, fruits, and vegetables, are noted for their physiological benefits including antimicrobial effects. This study introduced a new set of acylated phloroglucinol derivatives, synthesized and tested for their antifungal activity in vitro against seven different pathogenic fungi.

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  • The study assessed how common abdominal obesity is among urban adults aged 35 to 79 in southwest China, finding a prevalence of 30.7%.
  • It used data from nearly 11,000 participants across Chengdu and Chongqing, gathering information through questionnaires and physical measurements.
  • Key factors linked to higher rates of abdominal obesity included age, sex, marriage status, alcohol use, hypertension, and diabetes, while higher education, smoking, and physical activity were associated with lower rates.
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Background: Chemical fungicides are the mainstay of plant disease control in agricultural production, but there are a very limited number of drugs that can effectively control plant diseases. Two series of secondary amine derivatives were synthesized using the diamine skeleton combined with saturated aromatic and aliphatic aldehydes, and their antibacterial and antifungal activities against plant pathogens were determined. In addition, the antimicrobial mechanism of the highly active compound A26 was preliminarily examined against Xanthomonas oryzae (Xoo).

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Aspergillus flavus, a widespread saprotrophic filamentous fungus, could colonize agricultural crops with aflatoxin contamination, which endangers food security and the agricultural economy. A safe, effective and environmentally friendly fungicide is urgently needed. Pterostilbene, a natural phytoalexin originated from Pterocarpus indicus Willd.

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  • * Researchers tested 82 phenylboronic acid derivatives for antifungal properties, identifying compound A49 as particularly effective against B. cinerea, outperforming the commercial fungicide boscalid.
  • * A49 demonstrated significant antifungal activity with mechanisms including disruption of cell morphology, increased membrane permeability, and alteration of metabolic processes, showing potential as a new antifungal drug with low toxicity to mammal cells.
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Epidemic diseases of crops caused by fungi deeply affected the course of human history and processed a major restriction on social and economic development. However, with the enormous misuse of existing antimicrobial drugs, an increasing number of fungi have developed serious resistance to them, making the diseases caused by pathogenic fungi even more challenging to control. Drug repurposing is an attractive alternative, it requires less time and investment in the drug development process than traditional R&D strategies.

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  • * Drug repurposing offers a faster, cost-effective way to identify existing approved drugs that can be used to treat these bacterial infections in agriculture.
  • * This study screened 700 diverse drugs for effectiveness against key plant pathogens, identifying 8 promising drug categories that could lead to the development of new, potent agri-bactericides.
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The inhibitory effect of tavaborole on the invasion of in grapes and tomatoes, as well as the potential mechanism involved, was discovered in this study. Our findings showed that tavaborole inhibited spore germination and mycelial expansion in vitro and that the control efficiency in vivo on fruit decay was dose-dependent, which was effective in reducing disease severity and maintaining the organoleptic quality of the fruit, such as reducing weight loss and retaining fruit hardness and titratable acid contents during storage. Furthermore, the precise mechanism of action was investigated further.

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  • A series of compounds featuring disulfide bonds and various aromatic heterocycles were created to explore their antimicrobial properties inspired by the biological activity of allicin.
  • One specific compound showed strong antifungal activity with an EC value of 5.92 μg/mL and performed as well as the established drug thiophanate methyl in live tests.
  • This compound not only inhibited fungal growth effectively but also caused noticeable damage to fungal cells, indicating its potential as a more effective antibacterial agent compared to thiodiazole copper with a MIC value of 1.56 μg/mL.
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  • The study investigates the antifungal properties of Cnidium monnieri fruit extracts and specific coumarin compounds against harmful plant pathogenic fungi.
  • Among the tested compounds, 4-methoxycoumarin was found to be the most effective, significantly inhibiting the growth of the fungus Rhizoctonia solani.
  • The research suggests that 4-methoxycoumarin works by disrupting cellular functions in the fungi, leading to cell death, and proposes it as a potential eco-friendly biofungicide for managing plant diseases.
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  • Linn. is a medicinal plant with some antifungal properties, and this study aimed to test its ethanolic extract and the compound isoxanthohumol against various fungi.
  • The ethanolic extract showed moderate antifungal activity, while isoxanthohumol was highly effective in lab tests and showed promising results in living organisms as well.
  • The antifungal action of isoxanthohumol involves disrupting metabolic processes, particularly by damaging the TCA cycle and inhibiting ATP production, leading to fungal cell death through membrane damage.
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  • Plant pathogenic fungi pose significant challenges to agriculture, necessitating the development of innovative fungicides derived from natural products.
  • In this study, 30 magnolol derivatives were synthesized and tested, revealing that 11 showed significant antifungal activity against various phytopathogenic fungi, with one compound demonstrating superior efficacy compared to magnolol itself.
  • The research further explored the mechanisms of action of the most effective compound, indicating that it affects mycelium morphology and cell membrane integrity, while highlighting the importance of specific structural features for enhanced antifungal activity.
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This study aimed to investigate the clinical features, distribution, and antimicrobial susceptibility of Nocardia species isolated from pulmonary nocardiosis cases in a tertiary hospital in China. The species were collected from January 1, 2018, to May 31, 2019, and identified using Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry or polymerase chain reaction. Antimicrobial susceptibility testing was performed using the broth microdilution method.

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Background: Acinetobacter baumannii has traditionally been considered an opportunistic pathogen with low virulence. In this study, we characterized the carbapenem-resistant hypervirulent A. baumannii (CR-hvAB) stains isolated from our hospital in mid-south region of China.

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Purpose: Outbreaks of infection due to carbapenem-resistant (CRE), including New Delhi metallo-β-lactamase (NDM)-producing , have been increasingly reported worldwide, primarily in adults and rarely in children. The goal of this study was to characterize an outbreak of infection caused by NDM-5-producing in a children's hospital in China.

Methods: A total of 86 CRE isolates were collected from 85 hospitalized children between June 2017 and May 2018.

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This study investigated the prevalence, awareness, treatment, and control of hypertension and associated factors among urban adults in southwestern China. The study was conducted from 2013-2014 and used a multistage cluster sampling method to select a representative sample of 11,517 people in southwestern China, aged 35-79 years. Hypertension was defined as either systolic blood pressure of 140 mmHg or greater, diastolic blood pressure of 90 mm Hg or greater, or self-reported current treatment for hypertension with antihypertensive medications.

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Background: The molecular characterization of carbapenem-resistant hypervirulent Klebsiella pneumoniae (CR-hvKP) isolates is not well studied. Our goal was to investigate the molecular epidemiology of CR-hvKP strains that were isolated from a Chinese hospital.

Results: All clinical carbapenem-resistant K.

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Background: Congestive heart failure is rarely observed in patients with acromegaly. Excessive growth hormone secretion and elevation of insulin-like growth factor 1 contribute to pathological changes in myocyte growth and structure, cardiac contractility, vascular function, and in later stage may progress to cardiac dysfunction. Early recognition of the condition is paramount, though the insidious progression of the disease commonly results in late diagnosis.

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Background: Carbapenem-resistant Acinetobacter baumannii (CRAB) have been a challenging concern of health-care associated infections. The aim of the current study was to investigate the molecular epidemiology and clonal dissemination of CRAB isolates in a Chinese teaching hospital.

Methods: Non-duplicate clinical A.

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Purpose: To compare the dosimetric differences between volumetric modulated arc therapy (VMAT) and helical tomotherapy (HT) in treating early T-stage nasopharyngeal carcinoma (NPC).

Method: Ten patients with early T-stage NPC who received tomotherapy using simultaneously integrated boost (SIB) strategies were replanned with VMAT (RapidArc of Varian, dual-arc). Dosimetric comparisons between the RapidArc plan and the HT plan included the following: (1) D98, homogeneity, and conformity of PTVs; (2) sparing of organs at risk (OARs); (3) delivery time and monitor units (MUs).

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Background: Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae bacteria, which cause serious disease outbreaks worldwide, was rarely detected in Xiangya Hospital, prior to an outbreak that occurred from August 4, 2014, to March 17, 2015. The aim of this study was to analyze the epidemiology and molecular characteristics of the K.

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Objective: To investigate the activity of pyramidal neurons in the medial prefrontal cortex (mPFC) of normal and 6-OHDA-lesioned rats and the responses of the neurons to 5-hydroxytryptamine-7 (5-HT(7)) receptor stimulation.

Methods: The changes in spontaneous firing of the pyramidal neurons in the mPFC in response to 5-HT(7) receptor stimulation were observed by extracellular recording in normal and 6-OHDA-lesioned rats.

Results: Both systemic and local administration of 5-HT(7) receptor agonist AS 19 resulted in 3 response patterns (excitation, inhibition and no change) of the pyramidal neurons in the mPFC of normal and 6-OHDA-lesioned rats.

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The present study was aimed to explore the effect of sodium nitrite on cytoskeletal protein phosphorylation and spatial learning and memory in rats. Rats were served with drinking water containing sodium nitrite (100 mg/kg) for 60 days, then, the ability of spatial learning and memory of the rats was measured by Morris water maze. Phosphorylation level of tau and neurofilament, and the expression of protein phosphatase 2A (PP2A) catalytic subunit in the hippocampus were detected by immunohistochemistry and Western blot.

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Transforming growth factor (TGF)-β-inducible nuclear protein 1 (TINP1) is a novel gene, which is localized at chromosome 5q13 where frequent abnormalities in hairy cell leukemia (HCL) occur. The present study investigated the effects of TINP1 knockdown or overexpression on the viability and gene expression of various tumor cell lines. siTINP1 was designed to knock down TINP1 expression.

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In this study, we aim to identify the potential biomarkers in hTG pathogenesis in schisandrin B-induced hTG mouse model. To investigate whether these identified biomarkers are only specific to schisandrin B-induced hTG mouse model, we also measured these biomarkers in a high fat diet (HFD)-induced hTG mouse model. We employed a LC/MS/MS-based lipidomic approach for the study.

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