Publications by authors named "Liyin DU"

Glucose uptake by lymphocytes is dependent on the facilitative glucose transporters (GLUT1, GLUT3, GLUT4, and GLUT6) of the GLUT family and the Na-coupled glucose transporter SGLT1. GLUTs and SGLTs are widely expressed in mammals, and their expression and functions may affect cell development, homeostasis, activation, and differentiation. This article details the important functions of several GLUTs and SGLTs in lymphocytes and points out that glucose transporters play a key role in supplying energy for lymphocytes, maintaining intracellular glucose homeostasis, and improving the efficiency of immune responses, which reflect their key roles in signal transduction.

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With growing restrictions on the use of antibiotics in animal feed, plant extracts are increasingly favored as natural feed additive sources. Glycyrrhiza polysaccharide (GP), known for its multifaceted biological benefits including growth promotion, immune enhancement, and antioxidative properties, has been the focus of recent studies. Yet, the effects and mechanisms of GP on broiler growth and meat quality remain to be fully elucidated.

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Lumpy skin disease virus (LSDV) infection, accompanied by loss of hide quality, poor reproductive efficiency, consistent degenerative emaciation, and milk yield reduction of animals, causes severe economic implications in endemic zones. The heterologous attenuated goat pox (GTPV) vaccine (AV41 strain) was used in China to prevent LSDV infection. Only a few LSDV detection methods that distinguish LSDV from GTPV vaccine strains have been reported before.

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Elevated plasma nonesterified fatty acids (NEFAs) affect neutrophils function and longevity during the periparturient period in dairy cows. Previous research has shown that resveratrol (RSV) may protect cell viability from NEFA-induced damage by regulating energy metabolism. However, it is unclear whether RSV has a protective effect on palmitic acid (PA)-treated neutrophils.

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Background: Clinical dexamethasone (DEX) treatment or stress in bovines results in extensive physiological changes with prominent hyperglycemia and neutrophils dysfunction.

Objectives: To elucidate the effects of DEX treatment in vivo on cellular energy status and the underlying mechanism in circulating neutrophils.

Methods: We selected eight-month-old male bovines and injected DEX for 3 consecutive days (1 time/d).

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Article Synopsis
  • Transition dairy cows experience negative energy balance due to low dry matter intake and higher energy needs, leading to increased levels of β-hydroxybutyrate (BHBA) and non-esterified fatty acids (NEFAs), which can cause health issues like ketosis and fatty liver.
  • Research shows that NEFAs activate the NF-κB inflammatory signaling pathway and contribute to insulin resistance via the Toll-like receptor 4 (TLR4) mechanism in liver cells.
  • An inhibitor of TLR4 can counter the negative effects of NEFAs on insulin signaling, suggesting potential avenues for addressing inflammation and insulin sensitivity in dairy cows.
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Hypoglycemia resulting from a negative energy balance (NEB) in periparturient cattle is the major reason for a reduced glycogen content in polymorphonuclear neutrophils (PMNs). The lack of glycogen induces PMNs dysfunction and is responsible for the high incidence of perinatal diseases. The perinatal period is accompanied by dramatic changes in sex hormones levels of which estrogen (17β-estradiol, E2) has been shown to be closely associated with PMNs function.

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Recombinant viral vectors are useful tools for AIDS vaccine development. However, expression of HIV-1 envelope genes using viral vectors has not been successful in the induction of potent neutralizing antibodies in vivo. We took advantage of the strong immunogenicity of vesicular stomatitis virus (VSV)-based vector and expressed HIV-1 HXB2 gp120 gene in the recombinant VSV.

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