Tris(2-chloroethyl) phosphate, an extensively used organophosphorus flame retardant in consumer products, has caused pervasive environmental contamination and increased human exposure, raising concerns about its cardiotoxic potential. However, the detailed toxicological profile, particularly concerning the crucial cardiac energy metabolism, and the precise mechanisms remain poorly understood. This study in C57BL/6 J mice exposed to TCEP for 36 days at varying doses revealed cardiac dysfunction, structural abnormalities, and hypoxia.
View Article and Find Full Text PDFTris(2-chloroethyl) phosphate (TCEP), a prevalent organophosphorus flame retardant, has been identified in various environmental matrices and human blood samples, provoking alarm regarding its hematological toxicity, a subject that has not been thoroughly investigated. Red blood cells (RBCs), or erythrocytes, are the predominant cell type in peripheral blood and are crucial for the maintenance of physiological health. This investigation employed oral gavage to examine the effects of TCEP exposure on erythrocyte counts in mice and to clarify the underlying mechanisms.
View Article and Find Full Text PDFSensors (Basel)
October 2024
Considering the complexity of on-orbit assembly during space missions and the super-large size of space structures, this paper presents the design for a new type of docking interface with an androgynous body that exhibits a number of advantages, including high connection strength and a compact structure. The androgynous body has a conical guided symmetric design with a symmetry of 90°. The geometric design of the docking surface is described in detail in order to prove its advantages.
View Article and Find Full Text PDFBackground: The situation of mental health and discipline behaviors of left-behind children's caregivers were not optimistic in rural China. Caregivers' depression might increase the risk of using violent discipline. However, the specific ways in which depressive symptoms impact violent discipline have rarely been explored in rural areas.
View Article and Find Full Text PDFIt is estimated that there are about 23% of all children in China experiencing parental migration and being left behind at hometown. Existing research indicated a significant association between parental migration and children development but overlooked the dynamic changes in family structure caused by parental migration. In this study, data was derived from a nationally representative longitudinal survey-the China Family Panel Studies.
View Article and Find Full Text PDFSteroid hybrids have emerged as a type of advantageous compound as they could offer improved pharmacological and pharmaceutical properties. Here, we report a series of novel peptide-dehydroepiandrosterone hybrids, which would effectively induce endoplasmic reticulum stress (ERS) and lead to apoptosis with outstanding in vitro and in vivo anti-melanoma effects. The lead compound IId among various steroids conjugated with peptides and pyridines showed effective in vivo activity in B16 xenograft mice: in medium- and high-dose treatment groups (60 and 80 mg/kg), compound IId would significantly inhibit the growth of tumours by 98%-99% compared to the control group, with the highest survival rate as well.
View Article and Find Full Text PDFBackground: The early development of left-behind children requires great concern and improvement. Yet, current interventions for left-behind children are mainly focussed on children older than 3. This study aims to assess the effectiveness of a home visiting programme on family responsive care and early development of rural left-behind children and examine whether family responsive care mediates the effects of intervention on child development.
View Article and Find Full Text PDFSensors (Basel)
January 2024
High-precision positioning systems play a crucial role in various industrial applications. This study focuses on improving the performance of a high-precision multi-degrees-of-freedom (DOF) stage. In terms of the controller design, the following two key challenges must be addressed: the cross-decoupling of different DOFs and the impact of external disturbances.
View Article and Find Full Text PDFJ Environ Sci (China)
March 2024
Tetrabromobisphenol A (TBBPA) and its derivatives widely exist in various environments and biota. Although the available data indicate that TBBPA exposure is highly associated with the increased incidence of endometrial cancer (EC), the effects of TBBPA and its main derivatives on EC proliferation and the involved crucial mechanism remain unclear. The present study aimed to investigate the effects of TBBPA and its derivatives under environmental concentrations on the proliferation of EC, and the crucial mechanism on the progression of EC caused by bromine flame retardants exposure.
View Article and Find Full Text PDFMagnetite nanoparticles (MNPs) have been extensively detected in the atmospheric environment and implicated as a prominent threat to atherosclerosis, a chronic vascular inflammatory disease. Due to globalization and economic development, the dramatic shift in diet from traditional to high-fat dietary patterns aggravated atherosclerosis progression induced by environmental factors. However, limited knowledge is available regarding vascular risks and underlying mechanisms of airborne MNPs in high-risk populations with high-fat dietary habits.
View Article and Find Full Text PDFBackground: Due to multiple factors, left-behind children in rural areas suffer from neurodevelopment delay and their caregivers suffer from depressive symptoms. This study aimed to analyze the effect of caregivers' depressive symptoms on left-behind children's neurodevelopment, with early stimulation and responsive care mediating.
Methods: We conducted a cross-sectional survey in five counties in China.
Background: Echinochloa glabrescens Munro ex Hook. f. is one of the main Echinochloa spp.
View Article and Find Full Text PDFBackground: Home environment provides stimulation and learning opportunities required for children's early development. However, few studies have focused on the effects of home environment on left-behind children's development in rural China. The study aimed to investigate the relationship between home environment and early childhood development of left-behind children under 3 years old in rural China.
View Article and Find Full Text PDFChinese sprangletop (Leptochloa chinensis (L.) Nees) is a common grass species that severely threatens rice (Oryza sativa L.) cropping systems globally.
View Article and Find Full Text PDFFine particulate matter (PM) is a leading environmental cause for the increased morbidity and mortality of atherosclerosis (AS) worldwide, but little is known about the toxic component and disturbance of PM exposure on foam cell formation, a crucial pathological process in AS. Airborne magnetite nanoparticles (NPs) have been reported to be detected in human serum, which inevitably encounter with macrophages in atherosclerotic plaques, thus throwing potential disturbance on the formation of macrophage-derived foam cells. Here we comprehensively unveiled that the environmental concentrations of PM exposure triggered and potentiated the formation of macrophage-derived foam cells using both real-ambient PM-exposed mice and AS mice models, including high-fat diet-fed mice and apolipoprotein E-deficient mice.
View Article and Find Full Text PDFVirus receptors are highly involved in mediating the entrance of infectious viruses into host cells. Here, we found that typical chemical exposure caused the upregulation of virus receptor mRNA levels. Chemicals with the same structural characteristics can affect the transcription of angiotensin-converting enzyme 2 (), a dominant receptor of SARS-CoV-2.
View Article and Find Full Text PDFBackground: Chinese sprangletop (Leptochloa chinensis (L.) Nees) is an invasive grass weed severely infesting rice fields across China. In October 2020, a suspected resistant Leptochloa chinensis population HFFD3 that survived the acetyl-CoA carboxylase (ACCase)-inhibiting herbicide cyhalofop-butyl applied at its field-recommended rate was collected from a rice field in Feidong County, Anhui Province, China.
View Article and Find Full Text PDFBackground: Parent-child separation is a considerable adversity for left-behind children (LBC), but there is little evidence on the association between detailed characteristics of parent-child separation and social-emotional development among LBC. This study examined the characteristics of parent-child separation and its impacts on developmental delay among under-3 LBC in poor rural China.
Methods: We used data from 811 LBC surveyed in five poor counties in rural China in 2018.
For passive support of large aperture telescopes, geometric layout optimization of the support structure is one of the most critical tasks because it determines the deformation of the mirror under gravity, which affects the wavefront aberration and image quality of the system. Due to a lack of symmetry, the optimization of an elliptical mirror support can be much more complex compared with circular mirrors. We optimize the geometric layout of axial and lateral support for the tertiary mirror of the Thirty Meter Telescope (TMT).
View Article and Find Full Text PDFFine alignment of large, segmented telescopes is critical for achieving high angular resolution. Building an instrument with an equally large monolithic aperture is difficult because of the increasing mass and volume. Sparse aperture testing is a lower-cost solution to alignment and metrology, both in the optics shop and at the observatory.
View Article and Find Full Text PDFThe authors would like to correct errors in the publication of the original article. The errors described below and correct details provided.
View Article and Find Full Text PDFThe adverse health effects of rare earth elements (REEs) on reproductive health remain a subject of debate, and few clinical observations are available. This study investigated the association between light REEs (LREEs) exposure and the outcome of in vitro fertilization-embryo transfer (IVF-ET). We recruited a total of 305 women undergoing IVF-ET in Beijing City and Shandong Province of northern China.
View Article and Find Full Text PDFObjectives: This study assessed the early social-emotional development of left-behind children (LBC) in rural China and determined the mediating factors linking parental migration to LBC's developmental outcome.
Methods: We used cross-sectional data of 845 LBC under 3 years old from five counties in rural China in 2018. Social-emotional problems were assessed by the ages and stages questionnaires: social-emotional.
The period from birth to 2years of age is highly sensitive with respect to the relationship between nutrition and neurodevelopment, but data regarding the association between dietary diversity and early childhood neurodevelopment are limited. We sought to examine the association of two feeding indicators-minimum dietary diversity (MDD) and minimum meal frequency (MMF)-with the neurodevelopment of children aged 6-23 months, using data from a cross-sectional survey conducted in six rural counties in China. Data on 1,534 children were analysed using logistic regression to explore the associations between dietary diversity and early neurodevelopment, with adjustments for the age, sex and prematurity of the child; the age, sex and educational level of the caregiver; and family size, income and simulative care practices and resources.
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