Publications by authors named "Dawei Cai"

Introduction: Mitochondrial DNA (mtDNA) has been extensively utilized in archeology, human evolutionary genetics, and forensic genetic for over three decades, primarily due to its maternal inheritance and relatively high mutation rate. The Chinese Han, the largest and most widely distributed ethnic group in China, have been the focus of numerous genetic studies. However, the forensic parameters and genetic structure of the Shandong Han, specifically in relation to the whole mitochondrial genome, remain undocumented.

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Novel N-substituent diphenylamine derivatives as tubulin inhibitors targeting colchicine-binding site have been designed based on structural simplification and structural fusing strategy. Most designed compounds exhibited the moderate or potent antiproliferative activities against five cancer cell lines. Among them, compound 4k displayed the significant selectivity for osteosarcoma cells MG-63 and U2OS with the IC value of 0.

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Cadmium (Cd) contamination poses a significant threat to human health. Predicting the risk of Cd in rice grains is challenging due to the heterogeneity and complexity of bioavailable Cd in paddy soils. We proposed that porewater during the grain-filling period can effectively predict Cd bioavailability in rice (R > 0.

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Article Synopsis
  • Hepatitis B virus (HBV) uses the ESCRT/MVB pathway for budding both enveloped virions and non-enveloped capsids, with the exact mechanics of the latter still unclear.
  • The study identifies the significance of a specific lysine residue in HBV's capsid protein for successful naked capsid release and highlights the role of the ubiquitin system in this process.
  • AIP4, a member of the NEDD4 E3 ligase family, is shown to enhance naked capsid secretion by interacting with the protein Alix, while Alix's ubiquitination isn't strictly necessary for this release.
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Arsenic (As) mobilization in paddy fields poses significant health risks, necessitating a thorough understanding of the controlling factors and mechanisms to safeguard human health. We conducted a comprehensive investigation of the soil-porewater-rice system throughout the rice life cycle, focusing on monitoring arsenic distribution and porewater characteristics in typical paddy field plots. Soil pH ranged from 4.

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  • The study examined ancient DNA from horse remains found in the Shihuyao tombs, dating back to the Han and Tang Dynasties in Xinjiang (approximately 2200 to 1100 years ago).
  • Researchers sequenced two high-quality mitochondrial genomes, identifying them within maternal haplogroups B and D, and noted a genetic link between Tang Dynasty horses and modern Akhal-Teke horses through the primitive haplotype G1.
  • The findings highlighted the importance of the ancient Silk Road in the spread of these horses and suggested that early domestication of the Akhal-Teke breed was primarily for military use.
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  • This study explores how organic coatings like humic acid, sodium alginate, and bovine serum albumin affect the coprecipitation of iron and chromium hydroxides, which is important for managing toxic chromium in the environment.
  • The research reveals that the presence of certain functional groups, especially carboxyl groups (-COOH), influences the adsorption of iron and chromium ions, leading to differences in the amount and composition of precipitates formed.
  • Understanding these interactions is crucial for improving chromium remediation strategies and developing new materials based on chromium-doped iron compounds.
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Cadmium (Cd) and arsenic (As) co-contamination is widespread and threatens human health, therefore it is important to investigate the bioavailability of Cd and As co-exposure. Currently, the interactions of Cd and As by in vitro assays are unknown. In this work, we studied the concurrent Cd-As release behaviors and interactions with in vitro simulated gastric bio-fluid assays.

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Bone disease is a common complication following liver transplantation, often overlooked in clinical practice. Clinical diagnosis of post-liver transplantation bone disease is challenging, and there have been few case report in the literature. This case report presents a patient who underwent two liver transplant surgeries, exhibited good daily activity, and did not display typical clinical symptoms such as fatigue, bone pain, or spinal deformities associated with prolonged sitting or standing.

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Inadvertent oral ingestion is an important exposure pathway of arsenic (As) containing soil and dust. Previous researches evidenced health risk of bioaccessible As from soil and dust, but it is unclear about As mobilization mechanisms in health implications from As exposure. In this study, we investigated As release behaviors and the solid-liquid interface reactions toward As(V)-containing iron minerals in simulated gastrointestinal bio-fluids.

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Objective: The treatment of posterolateral tibial plateau fractures is difficult, and providing sufficient exposure and effective fixation is a challenge. There is great controversy regarding the surgical approach for posterolateral tibial plateau fractures. The purpose of the study was to investigate the clinical effects of open reduction and internal fixation using the Frosch approach for the treatment of posterolateral tibial plateau fractures combined with lateral tibial plateau fractures.

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  • Cattle have been significant in Chinese history, but the introduction of Chinese taurine cattle remains unclear despite previous ancient DNA studies suggesting they are exotic.
  • Researchers analyzed mitochondrial genomes from 34 ancient taurine cattle samples dated from the late Neolithic to the Qin and Han dynasties, successfully sequencing 14 genomes.
  • The study found genetic exchange among domestic taurine cattle across regions, indicating cultural and trade interactions, and suggests that ancient northern Chinese taurine cattle contributed genetically to modern Tibetan cattle through the spread of agriculture and pottery culture.
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The simultaneous precipitation of (Fe, Cr)(OH) nanoparticles in solution (homogeneous) and on soil surfaces (heterogeneous), which controls Cr transport in soil and aquatic systems, was quantified for the first time in the presence of model surfaces, i.e., bare and natural organic matter (NOM)-coated SiO and AlO.

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Purpose: To evaluate the clinical outcomes for arthroscopic treatment of acute posterior cruciate ligament (PCL) avulsion fractures with adjustable-loop cortical button fixation device.

Methods: Patients with PCL tibial avulsion fractures treated with an adjustable-loop cortical button fixation device between October 2019 and October 2020 were retrospectively identified. Patients with type 1 were treated using plaster fixation as a conservative treatment, whereas patients with type 2 and 3 with displacement were treated using an arthroscopic adjustable-loop cortical button.

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Objective: To evaluate the biomechanical effects of different miniplates on restorative laminoplasty.

Methods: Assembled restorative laminoplasty models were developed based on 3D printed L4 lamina. Based on different internal fixations, the research was divided into H-shaped miniplates (HSMs) group, two-hole miniplates (THMs) group, and L-shaped miniplates (LSMs) group.

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As miniature fibre-optic platforms, micro/nanofibres (MNFs) taper-drawn from silica fibres have been widely studied for applications from optical sensing, nonlinear optics to optomechanics and atom optics. While continuous-wave (CW) optical waveguiding is frequently adopted, so far almost all MNFs are operated in low-power region (e.g.

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HBV cccDNA is the persistent form of viral genome, which exists in host cell nucleus as an episomal minichromosome decorated with histone and non-histone proteins. cccDNA is the authentic viral transcription template and resistant to current antivirals. Growing evidence shows that the transcriptional activity of cccDNA minichromosome undergoes epigenetic regulations, suggesting a new perspective for anti-cccDNA drug development through targeting histone modifications.

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The HBV core protein plays an integral role in multiple steps of the HBV lifecycle. Consequently, HBV core inhibitors interrupt multiple steps of the replication cycle, including blocking pgRNA encapsidation and prematurely disassembling existing nucleocapsids, thereby preventing them from transporting relaxed circular (rcDNA) to the nucleus for conversion to covalently closed circular DNA (cccDNA). ABI-H2158 is an HBV core inhibitor that advanced into Phase 2 clinical trials for the treatment of chronic hepatitis B virus infection (cHBV) but was discontinued due to hepatotoxicity.

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HBV cure rates remain low despite prolonged nucleos(t)ide (NrtI) therapy, likely due to persistent residual viral replication and an inability to eliminate covalently closed circular DNA (cccDNA). Therapies with novel mechanisms of action against hepatitis B virus (HBV) are being explored with the goal of achieving sustained off-treatment response and a functional cure without requiring lifelong therapy. Recent studies have indicated that serum HBV DNA levels (a biomarker for viral replication) combined with serum pregenomic RNA (pgRNA) levels (a surrogate for intrahepatic cccDNA transcriptional activity), may provide a better prediction for the risk of liver-related complications.

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Bladder urothelial carcinoma (BLCA) is a common malignant tumor with the greatest recurrence rate of any solid tumor. Hypoxia is crucial in the growth and immune escape of malignant tumors. To predict clinical outcomes and immunological microenvironment of patients with BLCA, a hypoxia-related long non-coding RNA (HRlncRNA) signature was established.

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Irrigation activities can cause strong geochemical and hydrological fluctuations in the unsaturated zone, and affect arsenic (As) migration and transformation. The As geochemical cycle in the unsaturated zone is coupled with that of iron minerals through sorption-desorption, coprecipitation and redox processes. Dynamic batch experiments and wetting-drying cycling column experiments were conducted to evaluate As mobilization behaviors under the effects of exogenous substances, redox condition and intermittent flow.

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Background: This study aimed to assess the efficacy of mirabegron (50 mg daily) as a medical expulsive therapy for ureteral stones in adults.

Materials And Methods: We searched PubMed, Embase, Cochrane Library, and Web of Science from inception to July 2021 to collect the clinical trials. Two reviewers independently screened literature, extracted data, and assessed the risk of bias of included studies by using the Cochrane risk of bias tool.

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Hepatitis B virus (HBV) covalently closed circular DNA (cccDNA), serving as the viral persistence form and transcription template of HBV infection, hijacks host histone and non-histone proteins to form a minichromosome and utilizes posttranslational modifications (PTMs) "histone code" for its transcriptional regulation. HBV X protein (HBx) is known as a cccDNA transcription activator. In this study we established a dual system of the inducible reporter cell lines modelling infection with wildtype (wt) and HBx-null HBV, both secreting HA-tagged HBeAg as a semi-quantitative marker for cccDNA transcription.

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Article Synopsis
  • Fossils from horses, zebras, and asses show how different horse lineages evolved over time, with some dating back to North America and Ethiopia in the Pleistocene.
  • Researchers studied 26 ancient horse specimens from Northern China and sequenced their DNA, revealing that one lineage survived until about 3500 years ago, despite tough times for horses caused by climate change and human activities.
  • The study found that this horse lineage split from its ancestors between 2.3 to 2.7 million years ago, and its small genetic diversity made it harder for them to survive as a species.
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Context: Osteoarthritis (OA) is a high-incidence, chronic condition, with an extremely high prevalence among older adults. OA seriously compromises the normal living of OA patients, and it's imperative to find a novel therapy as soon as possible to improve their prognosis and life quality.

Objective: The study intended to investigate the therapeutic effects of Curcumin (Cur) on OA and to explore its preliminary mechanism of action, with the aim of offering more accurate guidance for use of OA therapy.

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