Publications by authors named "Liu Mengyun"

Background: The health visiting service in England leads the government's Healthy Child Programme (HCP) for children under five years. Local authorities and their provider partners deliver this service differently across England.

Objective: To describe local authority variation in the delivery of health visiting to children under five years in England (2018-2020).

View Article and Find Full Text PDF

Health visiting in England is a universal service that aims to promote the healthy development of children aged under five years and safeguard their welfare. We consulted stakeholders about their priorities for research into health visiting and also used these consultations and a literature review to generate a logic model. Parents wanted research to explore how health visiting teams can provide a caring, responsive, accessible service (the mechanisms of change).

View Article and Find Full Text PDF

Introduction: Health visiting is a community service provided to families with children under five in England and is a key focus of early years policy. Individual-level data on health visiting is captured in the Community Services Data Set (CSDS), an administrative dataset of publicly funded community services across England. Analyses of CSDS are considered experimental as the dataset matures.

View Article and Find Full Text PDF

Background: The limited extraction selectivity caused by the single extraction selection mechanism of solid phase extraction (SPE) technology is one of the bottlenecks restricting its development. The development of environmentally sensitive materials provides a new opportunity to solve this problem. Based on this, we developed the sulfobetaine methacrylate hydrogel with abundant pore structure, a large number of adsorption sites and especially temperature responsiveness, and used as adsorbent for the extraction of pesticide residues in lychees.

View Article and Find Full Text PDF

Background: Gleditsiae Sinensis Fructus (GSF) is commonly used in traditional medicine to treat respiratory diseases such as bronchial asthma. However, there is a lack of research on the chemical composition of GSF and the pharmacological substance and mechanism of action for GSF in treating bronchial asthma.

Purpose: The chemical constituents of GSF were analyzed using ultrahigh-performance liquid chromatography-quadrupole-Orbitrap high-resolution mass spectrometry (UHPLC-Q-Orbitrap HRMS).

View Article and Find Full Text PDF

Background: Pyrethroid chemicals are one of the main acaricides used against ticks. Resistance to these chemicals has been reported to be associated with mutations in the voltage-gated sodium channel (VGSC) gene of the Rhipicephalus microplus. This study investigates R.

View Article and Find Full Text PDF
Article Synopsis
  • Babesia and Theileria are important tick-borne parasites affecting animals, and their presence in different regions of China has not been thoroughly studied.
  • From August 2021 to May 2023, researchers collected 645 ticks from various domestic animals across multiple counties in Xinjiang, Chongqing, and Qinghai, identifying three tick species.
  • Several Babesia and Theileria species were found, including a potential new genotype of Babesia caballi, raising concerns about its drug resistance and the need for further research into its impact on animal health.
View Article and Find Full Text PDF

A fast and effective analytical method with biomass solid-phase microextraction sorbent combined with a high-performance liquid chromatography-ultraviolet detector was proposed for the determination of benzoylurea (BU) insecticides in tea products. The novel sorbent was prepared by activating and then carbonizing water hyacinth with a fast growth rate and low application value as raw material and showed a high specific surface area and multiple interactions with analytes, such as electrostatic action, hydrogen bonding, and π-π conjugation. After optimizing the three most important extraction parameters (pH [X], sample loading rate [X], and solution volume [X]) by Box-Behnken design, the as-established analytical method showed good extraction performance: excellent recovery (80.

View Article and Find Full Text PDF
Article Synopsis
  • Childhood influenza vaccination coverage is low in lower and middle-income countries, prompting a systematic review to understand the factors influencing this issue.
  • Thirty studies were reviewed, revealing that higher vaccination rates were linked to caregivers' knowledge, positive attitudes, perceived susceptibility, and healthcare workers' recommendations, while barriers included vaccine safety concerns and poor access to services.
  • To improve vaccination rates, health education targeting caregivers' confidence in vaccine safety is essential, along with further research on healthcare workers' recommendation behaviors and contextual influences on public vaccination practices.
View Article and Find Full Text PDF

Ethnopharmacological Relevance: Morinda officinalis How is called "Ba-Ji-Tian" in Traditional Chinese Medicine (TCM), which belongs to the genus Rubiaceae and is widely used for medicinal purposes in China and other eastern Asian countries. Morinda officinalis How polysaccharides (MOPs) are one of the key bioactive components, and have a variety of biological activities, such as antioxidation, antifatigue, enhanced immunity, antiosteoporosis, ect.

Aim Of The Review: This review is aimed at providing comprehensive information of the latest preparation technologies, structural characterization, and pharmacological effects of MOPs.

View Article and Find Full Text PDF

Background: To report a case of retinitis with multiple intraocular viral infections after second haematopoietic stem cell transplantation.

Case Presentation: A 39-year-old female patient developed retinitis after a second haematopoietic stem cell transplant. Right eye was tested for three viral infections- cytomegalovirus, Epstein‒Barr virus and herpes simplex virus, while left was infected with cytomegalovirus.

View Article and Find Full Text PDF
Article Synopsis
  • This study investigated tick-borne microorganisms in various tick species collected from four cities in three provinces of China, focusing on Haemaphysalis longicornis and Haemaphysalis qinghaiensis.* -
  • Researchers detected two Anaplasma species and a Coxiella species, with varying positive rates, while an Ehrlichia species was found in H. qinghaiensis, suggesting potential variants of known pathogens.* -
  • The study indicated that the microorganisms detected may originate from the blood meals of the ticks rather than being vectored, highlighting the need for further research on tick-borne pathogens in the region.*
View Article and Find Full Text PDF
Article Synopsis
  • Tendinopathy is a serious condition caused by the degeneration of tendon tissue, which can lead to loss of function and tendon ruptures, and currently has no effective treatments to stop its progression.
  • Exosomes are tiny vesicles that carry important substances like proteins and RNAs between cells and are produced by mesenchymal stem cells (MSCs), playing a key role in cell communication and body regulation.
  • Recent studies indicate that exosomes derived from MSCs may be promising in promoting tendon healing and could offer new treatment options for tendinopathy.
View Article and Find Full Text PDF

Various plant species contain terpene secondary metabolites, which disrupt insect growth and development by affecting the activity of juvenile hormone-degrading enzymes, and the juvenile hormone (JH) titers maintained in insects. Nerolidol, a natural sesquiterpenol belonging to the terpenoid group, exhibits structural similarities to insect JHs. However, the impact of nerolidol on insect growth and development, as well as its underlying molecular mechanism, remains unclear.

View Article and Find Full Text PDF

Tendon injuries, commonly associated with sports activities, pose significant challenges in terms of treatment and recovery due to limited tendon regeneration and the formation of proliferative scars. Stem cell-based therapy has shown promising application, but there are still challenges. Physical and biological cues are instrumental in guiding stem cell differentiation and maturation.

View Article and Find Full Text PDF

Quantifying the stomatal responses of plants to global change factors is crucial for modeling terrestrial carbon and water cycles. Here we synthesize worldwide experimental data to show that stomatal conductance (g) decreases with elevated carbon dioxide (CO), warming, decreased precipitation, and tropospheric ozone pollution, but increases with increased precipitation and nitrogen (N) deposition. These responses vary with treatment magnitude, plant attributes (ambient g, vegetation biomes, and plant functional types), and climate.

View Article and Find Full Text PDF
Article Synopsis
  • Braun's lipoprotein (Lpp) is crucial for maintaining the stability of the cell envelope by linking the outer membrane to the peptidoglycan layer.
  • Researchers used atomic force microscopy to observe Lpp directly on peptidoglycan sacculi, finding it evenly spread across the surface but absent at the division site during cell division.
  • The study provides a method for better understanding the distribution of Lpp and other proteins bound to the peptidoglycan layer through direct imaging techniques.
View Article and Find Full Text PDF

Background: Morinda officinalis How (MO) is a perennial herb distributed in tropical and subtropical regions, which known as one of the "Four Southern Herbal Medicines". The extent of genetic variability and the population structure of MO are presently little understood. Here, nine morphological traits, six chemical components and Single nucleotide polymorphism (SNP) markers were used in integrative research of MO germplasm variation among 88 individuals collected from ten populations across four geographical provinces of China.

View Article and Find Full Text PDF

Background: To report a very rare acute cystoid macular oedema following ganciclovir injection in patients receiving allogeneic haematopoietic stem cell transplantation.

Case Presentation: A 44-year-old male patient experienced vision loss in his left eye eight months after allogeneic stem cell transplantation. Ophthalmologic examination showed posterior retinopathy with retinal haemorrhage, a yellow necrotic border, and a vascular white sheath involved in the superior temporal retina but not the posterior pole.

View Article and Find Full Text PDF

Background: Diabetes mellitus (DM) has shown a trend of reaching pandemic levels in the world. Chronic inflammation is a key factor in the development of diabetic retinopathy (DR). Red blood cell distribution width-to-albumin ratio (RA) is used to assess immune status and the immune response.

View Article and Find Full Text PDF

Circular RNAs (circRNAs), a class of non-coding and undegradable RNAs, play many pathological functions by acting as miRNA sponges, interacting with RNA-binding proteins, and others. The recent literature indicates that circRNAs possess the advanced superiority for the early screening of diabetic retinopathy (DR). CircRNA sources of peripheral blood mononuclear cells (PBMCs) from healthy controls ( = 4), diabetes mellitus patients (DM) ( = 4), and DR patients ( = 4) were extracted for circular RNA microarray analysis.

View Article and Find Full Text PDF

Influenza A virus (IAV) is an infectious pathogen, threatening the population and public safety with its epidemics. Therefore, it is essential to better understand influenza virus biology to develop efficient strategies against its pathogenicity. Autophagy is an important cellular process to maintain cellular homeostasis by cleaning up the hazardous substrates in lysosome.

View Article and Find Full Text PDF

Drought is a major environmental threat that affects plant growth and productivity. Strategies to mitigate the detrimental impacts of drought stress on plants are under scrutiny. Nanotechnology is considered an effective tool in resolving a wide range of environmental issues by offering novel and pragmatic solutions.

View Article and Find Full Text PDF

Purpose: To explore the mechanisms underlying stemness maintenance of retinoblastoma (RB) stem cells (RSCs).

Methods: The retinoblastoma stem-like cells (RSLCs) were isolated by single cell cloning in combination of examination of sphere-forming capacities. The stemness of the cells were characterized by the sphere-forming capacity and the expression levels of RSCs markers.

View Article and Find Full Text PDF