Publications by authors named "Xiuchun Zhang"

Article Synopsis
  • - The study aimed to compare dosimetric outcomes of vaginal brachytherapy using two methods: single-channel vaginal cylinder (SCVC) and free-hand interstitial needles (FIN) in treating gynecologic tumors after surgery and external beam radiation therapy.
  • - Out of 22 women treated, both methods achieved similar coverage of the high-risk clinical target volume (HR-CTV), but the FIN technique had better dose distribution and resulted in lower doses to critical organs like the rectum and bladder compared to SCVC.
  • - The findings suggest that the FIN technique is a more effective option for high-dose-rate vaginal brachytherapy in minimizing radiation exposure to surrounding organs while ensuring adequate treatment coverage.
View Article and Find Full Text PDF

Background: DNA methylation contributes to the epigenetic regulation of nuclear gene expression, and is associated with plant growth, development, and stress responses. Compelling evidence has emerged that long non-coding RNA (lncRNA) regulates DNA methylation. Previous genetic and physiological evidence indicates that lncRNA-CRIR1 plays a positive role in the responses of cassava plants to cold stress.

View Article and Find Full Text PDF
Article Synopsis
  • Gliomas, particularly glioblastoma multiforme (GBM), are the most common primary brain tumors, with treatment outcomes highly dependent on surgical removal and effective chemotherapy.
  • The effectiveness of chemotherapy is often hindered by factors like the blood-brain barrier and drug resistance mechanisms, such as the O6-methylguanine-DNA methyltransferase gene.
  • Recent advances in nanotechnology have introduced nanoparticles as a promising approach for glioma treatment, enhancing drug delivery and reducing side effects, thus presenting new possibilities for overcoming chemotherapy resistance in glioma patients.
View Article and Find Full Text PDF

Paclitaxel leads to peripheral neuropathy (paclitaxel-induced peripheral neuropathy [PIPN]) in approximately 50% of cancer patients. At present, there are no effective treatment strategies for PIPN, the mechanisms of which also remain unclear. In this study, we performed microbiome and metabolome analysis of feces and serum from breast cancer patients with different PIPN grades due to paclitaxel treatment.

View Article and Find Full Text PDF

Interactions between brain-resident and peripheral infiltrated immune cells are thought to contribute to neuroplasticity after cerebral ischemia. However, conventional bulk sequencing makes it challenging to depict this complex immune network. Using single-cell RNA sequencing, we mapped compositional and transcriptional features of peri-infarct immune cells.

View Article and Find Full Text PDF

Plant cells employ intricate defense mechanisms, including mRNA decay pathways, to counter viral infections. Among the RNA quality control (RQC) mechanisms, nonsense-mediated decay (NMD), no-go decay (NGD), and nonstop decay (NSD) pathways play critical roles in recognizing and cleaving aberrant mRNA molecules. Turnip crinkle virus (TCV) is a plant virus that triggers mRNA decay pathways, but it has also evolved strategies to evade this antiviral defense.

View Article and Find Full Text PDF

This study aims to utilize a hybrid approach of phantom correction and deep learning for synthesized CT (sCT) images generation based on cone-beam CT (CBCT) images for nasopharyngeal carcinoma (NPC). 52 CBCT/CT paired images of NPC patients were used for model training (41), validation (11). Hounsfield Units (HU) of the CBCT images was calibrated by a commercially available CIRS phantom.

View Article and Find Full Text PDF
Article Synopsis
  • Stem cell-based therapy using human umbilical cord mesenchymal stem cells (hUMSC) shows potential for treating stroke, specifically ischemic stroke, but the underlying mechanisms are not yet fully understood.
  • The study aimed to analyze immune response traits and identify prognostic biomarkers and therapeutic targets by utilizing a microarray dataset of stroke in rats.
  • Bioinformatics analysis revealed 30 differentially expressed genes (DEGs) related to immune responses, highlighting pathways involved in inflammation, immune signaling, and leukocyte activity, suggesting that hUMSC may be effective through immunomodulation.
View Article and Find Full Text PDF

Most plant viruses encode suppressors of RNA silencing (VSRs) to protect themselves from antiviral RNA silencing in host plants. The capsid protein (CP) of Turnip crinkle virus (TCV) is a well-characterized VSR, whereas SUPPRESSOR OF GENE SILENCING 3 (SGS3) is an important plant-encoded component of the RNA silencing pathways. Whether the VSR activity of TCV CP requires it to engage SGS3 in plant cells has yet to be investigated.

View Article and Find Full Text PDF

The aim of this study is to demonstrate the feasibility of a commercially available Auto-Planning module for the radiation therapy treatment planning for locally advanced nasopharyngeal carcinoma (NPC). 22 patients with locally advanced NPC were included in this study. For each patient, volumetric modulated arc therapy (VMAT) plans were generated both manually by an experienced physicist and automatically by the Auto-Planning module.

View Article and Find Full Text PDF

Epilepsy is one of the most common neurology diseases. It is characterized by recurrent, spontaneous seizures and accompanied by various comorbidities which can significantly affect a person's life. Accumulating evidence indicates an essential pathophysiological role for neuroinflammation in epilepsy, which involves activation of microglia and astrocytes, recruitment of peripheral leukocytes into the central nervous system, and release of some inflammatory mediators, including pro-inflammatory factors and anti-inflammatory cytokines.

View Article and Find Full Text PDF

Immune checkpoint inhibitors (ICIs) have been increasingly used in the treatment of various types of tumors with favorable results. But these treatments also led to a variety of immune-related adverse events (irAEs). Neurological irAEs such as Guillain-Barré Syndrome are rare and may have serious consequences once they occur.

View Article and Find Full Text PDF

Chemotherapy-induced peripheral neuropathy (CIPN) is a common side effect during the course of cancer treatment, which is mainly manifested as a series of sensory abnormalities. At present, there are no recommended prevention or treatment strategies, and the underlying mechanisms are unclear. The ketogenic diet (KD), a special diet that is high in fat and low in carbohydrate intake, shows good therapeutic potential in children with epilepsy.

View Article and Find Full Text PDF

Background: Urinary tract infection (UTI) is a mainly common infection in kidney transplant recipients. This study decided to investigate UTI, bacterial agents, and antibiotic resistance pattern in kidney transplant recipients from Iran.

Materials And Methods: Search process was conducted for UTI, bacterial agents, and antibiotic resistance pattern in kidney transplant recipients from Iran via electronic databases (Scopus, PubMed, Web of Science, etc.

View Article and Find Full Text PDF

: In the young generations with nitrous oxide abuse (NO), featured electrophysiological response of the peripheral neuropathy caused by nitrous oxide remains to be defined.: Patients with nitrous oxide abuse (20 cases), two variants of Guillain-Barré syndrome (GBS), that is, acute inflammatory demyelinating polyradiculoneuropathy (GBS-AIDP, 19 cases) and acute motor axonal neuropathy (GBS-AMAN, 18 cases), as well as diabetic peripheral neuropathy (DPN, 20 cases) were enrolled into this study. Electrophysiological parameters including distal motor latency (DML), motor nerve conduction velocity (MNCV), sensory nerve conduction velocity (SNCV), amplitudes of compound muscle action potential (CMAP), and sensory nerve action potential (SNAP) were measured and analyzed by comparing the parameters between the aforementioned patients groups as well as normal control group (20 subjects).

View Article and Find Full Text PDF

Background: Virus-induced gene silencing (VIGS) is a useful tool for functional characterizations of plant genes. However, the penetrance of VIGS varies depending on the genes to be silenced, and has to be evaluated by examining the transcript levels of target genes.

Results: In this report, we report the development of a novel VIGS vector that permits a preliminary assessment of the silencing penetrance.

View Article and Find Full Text PDF

Cerebral ischemia may cause irreversible neural network damage and result in functional deficits. Targeting neuronal repair after stroke potentiates the formation of new connections, which can be translated into a better functional outcome. Innate and adaptive immune responses in the brain and the periphery triggered by ischemic damage participate in regulating neural repair after a stroke.

View Article and Find Full Text PDF

Purpose: To develop and evaluate an automatic intensity-modulated radiation therapy (IMRT) program for cervical cancer, including a Convolution Neural Network (CNN)-based prediction model and an automated optimization strategy.

Methods: A CNN deep learning model was trained to predict a patient-specify set of IMRT objectives based on overlap volume histograms (OVH) and high-quality plan of previous patients. A total of 140 cervical cancer patients were enrolled in this study, including 100 patients in the training set, 20 patients in the validation set and 20 patients in the testing set.

View Article and Find Full Text PDF

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterized by muscle weakness due to the degeneration of the upper and lower motor neurons. Neuroinflammation is known as a prominent pathological feature of ALS. Although neuroinflammation cannot trigger ALS, activated central nervous system (CNS) microglia and astrocytes, proinflammatory periphery monocytes/macrophages and T lymphocytes, and infiltrated monocytes/macrophages and T lymphocytes, as well as the immunoreactive molecules they release, are closely related to disease progression.

View Article and Find Full Text PDF

Background: GABAA receptors modulate the behavioral recovery encountered in both experimental animals and patients with ischemic injury, possibly through promoting structural plasticity. We hypothesized that activation of GABAA receptors would regulate axonal growth, which in turn would improve the behavioral recovery in ischemic rats.

Objective: To investigate the effects of muscimol on axonal growth, synaptic plasticity and behavioral performance in rats after a focal ischemia induced by endothelin-1 (ET-1).

View Article and Find Full Text PDF

Remyelination has been widely noticed as an important repair mechanism triggered after a stroke-induced white matter injury, but it often fails due to the lack of recruitment of the oligodendrocyte progenitor cells (OPCs) to the demyelinated area and the inadequate differentiation of OPCs. Racemic dl-3-n-butylphthalide (dl-NBP) has been reported to improve the functional recovery in animal models of vascular dementia, Alzheimer's disease (AD) and ischemic stroke. Dl-NBP (70 mg/kg) by oral gavage for two weeks from day 7 after a stroke was administered in the study, the treatment promoted differentiation and maturation of OPCs in perilesional white matter and enhanced the length of crossing corticospinal tract (CST) fibers into the denervated hemispheres.

View Article and Find Full Text PDF

An increasing number of studies have observed that microRNAs (miRNAs) are abnormally expressed in non-small cell lung cancer (NSCLC), and that their aberrant expression links with the progression and development of NSCLC. Therefore, it is necessary to full elucidate the specific roles of miRNAs in NSCLC, as this may facilitate the identification of novel therapeutic targets. In the present study, it was observed that miRNA-598 (miR-598) expression was significantly downregulated in NSCLC tissues and cell lines.

View Article and Find Full Text PDF

Objective: To investigate the effect of miR-17-5p on vascular lesion and expression of very low density lipoprotein receptor (VLDLR) in atherosclerotic (AS) mice.

Methods: -/- mice were fed with high fat diet for 15 weeks to establish atherosclerotic mice models, and these mice were injected with miR-17-5p inhibitor antagomiR-17-5p 20 mg/kg from week 13 to week 15 to interfere the expression of miR-17-5p. AS model group (injection of normal saline) and NC miRNA group (injection of negative control inhibitors) were set and C57BL/6 mice were fed with normal diet for 15 weeks as normal control group (NC group, injection of normal saline during week 13-15).

View Article and Find Full Text PDF

Stromal cell-derived factor-1 is a chemoattractant produced by bone marrow stromal cell lines. It is recognized as a critical factor in the immune and central nervous systems (CNSs) as well as exerting a role in cancer. SDF-1 activates two G protein-coupled receptors, CXCR4 and CXCR7; these are expressed in both developing and mature CNSs and participate in multiple physiological and pathological events, e.

View Article and Find Full Text PDF