Publications by authors named "Baohua Xu"

NADPH-cytochrome P450 reductase (CPR) plays important roles in the metabolism of both endogenous and exogenous compounds through cytochrome P450, and is also involved in the detoxification of insecticides mediated by cytochrome P450. However, the CPR from Apis cerana cerana has not been well characterized and its function is still undescribed. This study isolated the CPR gene from Apis cerana cerana and investigated its functional role in the resistance to pesticide and heavy metal stress.

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Olfaction mediated by the antennae is a vital sensory modality for arthropods and could be applied as a tool in pest control. The ectoparasitic mite poses a significant threat to the health of the honey bee worldwide and has garnered global attention. To better understand the chemical ecology of this host-parasite relationship, we collected and characterized the volatile organic compounds (VOCs) from and used electroantennography (EAG) to record the responses of honey bee ( and ) antennae to the different VOCs.

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The honey bee (), a subspecies of , is endemic in China and possesses a valuable ecological niche. Understanding the ways to protect this honey bee's populations is crucial, but this topic has been understudied. For the efficient utilization of beekeeping and pollination, there is a need to explore its biology and management practices.

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Background: Limited research has been conducted on the burden of community-associated infections caused by multidrug-resistant (CA-MDRPa). We quantitatively modeled the incidence rate and clinical factors associated with CA-MDRPa among hospitalized patients in Southern China.

Methods: Data were obtained from the local nosocomial surveillance system.

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Article Synopsis
  • * The study found that Apis cerana cerana honeybees have greater resistance to imidacloprid than Apis mellifera, and administering JHIII can enhance resistance in both species by activating specific genes related to JHIII production.
  • * Research also showed that silencing genes responsible for JHIII synthesis decreased its levels, which diminished honeybees' resistance to imidacloprid, while JHIII treatment mitigated damage caused by the insecticide
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Monocrotaline (MCT) is a toxic alkaloid present in plants, posing a threat to animals in terrestrial ecosystems. However, little is known about its potential impacts on pollinating insects. Here, we report the effects of of MCT on the brains and intestines of foraging honeybees (Apis mellifera).

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Article Synopsis
  • Monocrotaline (MCT), a toxic substance found in Crotalaria plants, poses risks to honeybees (Apis mellifera), particularly due to limited research on long-term exposure to low doses.
  • Studies show that sublethal MCT concentrations impair honeybee sensory and memory functions by disrupting tryptophan (Trp) metabolism and altering brain activity.
  • MCT increases the expression of the corazonin receptor gene, raising harmful reactive oxygen species (ROS) levels while decreasing glucose in the blood, leading to a shorter lifespan in honeybees.
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  • Researchers are studying new kinds of pesticides called nanopesticides, which might harm bees, even though they're becoming popular in farming.!
  • They created special tiny capsules called LC-NCs and found that they change the helpful bacteria in bees' guts and affect their immune systems.!
  • The study shows that these nanopesticides can have big effects on honey bees, so it’s important to learn more about how they impact nature and the environment.!
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Objective: To recommend precision dosing and improve therapeutic efficacy against invasive fungal disease, a physiologically based pharmacokinetic model (PBPK) of oral isavuconazole (ISA) was established and used to explore its disposition across populations in different physiological and pathological states.

Methods: Twenty-five pharmacokinetic (PK) studies of oral ISA were identified through a systematic search of PubMed. Concentration-time data were extracted using WebPlotDigitizer.

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Wound healing is a complex challenge that demands urgent attention in the clinical realm. Efficient angiogenesis is a pivotal factor in promoting wound healing. microRNA-146a (miR-146a) inhibitor has angiogenic potential in the periodontal ligament.

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To achieve the AUC-guided dosing, we proposed three methods to estimate polymyxin B AUC across 24 h at steady state (AUC) using limited concentrations after its first dose.Monte Carlo simulation based on a well-established population PK model was performed to generate the PK profiles of 1000 patients with normal or abnormal renal function. Polymyxin B AUC was estimated for each subject using three methods (two-point PK approach, three-point PK approach, and four-point PK approach) based on limited concentration data in its first dose and compared with the actual AUC at steady state calculated using the linear-trapezoidal formula.

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Article Synopsis
  • Cytochrome P450 is crucial for insect growth and stress resistance, and its genes, like AccCYP6A13 from Apis cerana cerana, are essential for these functions.
  • The expression of AccCYP6A13 varies with age, peaking in adult bees, and is influenced by environmental stress, especially in key body parts like legs, brain, and epidermis.
  • Knocking down AccCYP6A13 leads to reduced antioxidant activity and increased pesticide vulnerability, highlighting its importance in development and stress response, which enhances our understanding of bee biology.
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In this study, the copper-nickel (Cu-Ni) bimetallic electrocatalysts for electrochemical CO reduction reaction(CORR) are fabricated by taking the finely designed poly(ionic liquids) (PIL) containing abundant Salen and imidazolium chelating sites as the surficial layer, wherein Cu-Ni, PIL-Cu and PIL-Ni interaction can be readily regulated by different synthetic scheme. As a proof of concept, Cu@Salen-PIL@Ni(NO) and Cu@Salen-PIL(Ni) hybrids differ significantly in the types and distribution of Ni species and Cu species at the surface, thereby delivering distinct Cu-Ni cooperation fashion for the CORR. Remarkably, Cu@Salen-PIL@Ni(NO) provides a C2+ faradaic efficiency (FE) of 80.

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Background: A growing body of evidence indicates a strong association between exogenous thyroid hormone (ETH) and brain health. Establishing the potential relationship between ETH therapy and dementia symptoms is crucial for patients with thyroid disorders.

Objective: In this study, we investigate the potential association between ETH therapy and dementia symptoms by exploring the Food and Drug Administration Adverse Event Reporting System (FAERS) database.

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Pesticide usage is a common practice to increase crop yields. Nevertheless, the existence of pesticide residues in the surrounding environment presents a significant hazard to pollinators, specifically the potential undisclosed dangers related to emerging nanopesticides. This study examines the impact of abamectin nanocapsules (AbaNCs), created through electrostatic self-assembly, as an insecticide on honey bees.

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Objectives: The objective of this study was to synthesize arginine loaded mesoporous silica nanoparticles (Arg@MSNs), develop a novel orthodontic adhesive using Arg@MSNs as modifiers, and investigate the adhesive performance, antibacterial activity, and biocompatibility.

Methods: Arg@MSNs were synthesized by immobilizing arginine into MSNs and characterized using transmission electron microscope (TEM), dynamic light scattering (DLS), and Fourier Transform Infrared Spectrometer (FT-IR). Arg@MSNs were incorporated into Transbond XT adhesive with different mass fraction to form functional adhesives.

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Unlabelled: Queen and worker bees are natural models for aging research, as their lifespans vary considerably independent of genetic variation. Investigating the reasons why queens live longer than workers is of great significance for research on the universal processes of aging in animals. The gut microbiome has received attention as a vital regulator of host health, while its precise role in honeybee aging needs further investigation.

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Article Synopsis
  • * Laboratory experiments revealed that high Cd concentrations lead to acute mortality in bees, and long-term exposure to lower levels resulted in decreased antioxidant gene activity, increased oxidative stress, and impaired immune response.
  • * Additionally, Cd altered the gut microbiota of the bees, disrupting their microbial balance, which further threatens their health, highlighting the need for more research on Cd's effects on honey bee populations.
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The improper use of deltamethrin (DM) can result in its accumulation in soil, water, food, and even the human body, which is associated with an elevated risk of neurotoxicity and behavioral abnormalities; however, the underlying mechanisms remain insufficiently investigated. Emerging evidence underscores the significance of the gut-brain axis in central nervous system (CNS) dysfunctions. Accordingly, this study investigates the role of the gut-brain axis in DM-induced behavioral anomalies in mice.

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Microplastics' (MPs) ability to sorb and transport polychlorinated biphenyls (PCBs) in soil ecosystems warrants significant attention. Although organisms mainly encounter pollutants through the gut, the combined pollution impact of MPs and PCBs on soil fauna gut toxicity remains incompletely understood. Consequently, this study examined the gut toxicity of polystyrene MPs (PS-MPs) and PCB126 on Eisenia fetida, emphasizing the links between gut bacteria and bacterial translocation instigated by gut barrier impairment.

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Statement Of Problem: Whether the incorporation of arginine-loaded mesoporous silica nanoparticles (Arg@MSNs) into denture base resin can improve the mechanical and antibacterial properties is unclear.

Purpose: The purpose of this in vitro study was to synthesis Arg@MSNs and explore how Arg@MSNs incorporation affects the mechanical and antibacterial properties of denture base resin.

Material And Methods: Arg@MSNs were synthesized via a sol-gel process and characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), and X-ray diffraction (XRD).

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Bees are a valuable model for investigating the relationship between environmental factors, gut microbiota, and organismal health. Beebread, produced from collected pollen, is a natural food source and a primary reservoir of gut microorganisms. Although pollen typically has diverse bacterial species, beebread has low species richness and bacterial abundance.

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Royal jelly (RJ) is a highly nutritious secretion of the honeybees' hypopharyngeal glands (HPGs). During RJ production, colonies are occasionally subjected to manual interventions, such as sucrose feeding for energy supplementation. This study aimed to assess the impact of sucrose feeding on the composition of RJ.

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