Publications by authors named "Litian Zhang"

The vitality of urban parks reflects the intensity of green space utilization, gauging visitors' overall perception of the parks, facilitating integrated park management, and ensuring the parks' sustainable development. But, the park's spatial vitality characteristics change over time, and the factors influencing the differences in vitality have not been conclusively established. Therefore, This study employs Baidu heat map data to examine the spatial and temporal distribution patterns of park visitor vitality on holidays and weekdays in urban parks located in the core urban region of Fuzhou City.

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Primary central nervous system lymphoma (PCNSL) is one of the rare lymphomas limited to the central nervous system. With the availability of immunotherapy, the tumor microenvironment (TME) attracts much attention nowadays. However, the systematic studies on the TME of PCNSL are lacking.

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Ubiquitin C-terminal hydrolase L1 (UCHL1) plays vital roles in cell proliferation, angiogenesis, inflammation and oxidative stress. Nevertheless, it is unclear whether UCHL1 could regulate the biologic behaviour of cells and ultimately influences wound healing. We aim to illustrate the roles and the underlying mechanism of UCHL1 in cutaneous wound healing.

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  • Fibronectin (FN) is crucial for maintaining the endothelial barrier, but Treponema pallidum (Tp) can disrupt this barrier, enabling infection spread.
  • In experiments with human microvascular endothelial cells, only live Tp was found to break down the FN matrix without altering the overall FN or its receptor levels.
  • The study identified that the phosphorylation of vimentin, linked to Tp infection, leads to FN matrix disaggregation, which suggests that maintaining FN stability is vital to controlling syphilis and its progression in the body.
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Rock materials failures are accompanied by the co-existence of various failure mechanisms, including rock fracturing, shearing, and compaction yield. These mechanisms manifest macroscopically as multiple failure modes and nonlinear strength characteristics related to stress levels. Considering the limitations of current rock mechanics strength theories, which are primarily derived from single failure mechanisms, this study evaluates the applicability of alternative strength theories.

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  • Diffuse large B-cell lymphoma (DLBCL) is the most common form of non-Hodgkin's lymphoma, with a rare subset known as CD5 DLBCL, affecting about 5-10% of patients and often presenting in older females with more severe disease symptoms.
  • CD5 DLBCL patients tend to have poorer prognostic factors, such as higher levels of lactate dehydrogenase and advanced disease with increased risks of central nervous system relapse and bone marrow involvement.
  • Traditional treatments like R-CHOP are less effective for CD5 DLBCL, prompting interest in newer therapies, including BTK inhibitors and immunotherapy, though further research is needed to ascertain the best treatment approaches.
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Cluster of differentiation 36 (CD36) is a multiligand receptor with important roles in lipid metabolism, angiogenesis and innate immunity, and its diverse effects may depend on the binding of specific ligands in different contexts. CD36 is expressed not only on immune cells in the tumor microenvironment (TME) but also on some hematopoietic cells. CD36 is associated with the growth, metastasis and drug resistance in some hematologic tumors, such as leukemia, lymphoma and myelodysplastic syndrome.

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  • The study aimed to analyze gene mutations in primary central nervous system lymphoma (PCNSL) using whole exome sequencing on tumor samples from 18 patients at Lanzhou University Second Hospital during 2018-2020.
  • Results showed all patients had significant somatic mutations, with an average of 321 mutations per patient and a dominant presence of missense mutations primarily of the C>T type, highlighting an age-related mutation pattern.
  • The research identified key driver genes linked to crucial pathways such as RTK-RAS and Wnt, along with a notably high tumor mutation burden, suggesting potential effectiveness of PD-1 inhibitors in treating PCNSL.
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Objective: To explore the clinical features and prognosis of patients with primary central nervous system lymphoma(PCNSL).

Methods: A retrospective analysis was performed on the relationship between clinical features, treatment regimen and prognosis in 46 newly diagnosed patients with primary central nervous system lymphoma who were diagnosed and treated in The Second Hospital of Lanzhou University from January 2015 to September 2022. Fisher's exact probability method was used to analyze the differences in clinical data of different subgroups.

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The release of host mitochondrial cardiolipin is believed to be the main factor that contributes to the production of anti-cardiolipin antibodies in syphilis. However, the precise mechanism by which mitochondria release cardiolipin in this context remains elusive. This study aimed to elucidate the mechanisms underlying mitochondrial cardiolipin release in syphilis.

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Background: Class III peroxidases (PODs) perform crucial functions in various developmental processes and responses to biotic and abiotic stresses. However, their roles in wheat seed dormancy (SD) and germination remain elusive.

Results: Here, we identified a wheat class III POD gene, named TaPer12-3A, based on transcriptome data and expression analysis.

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Heat shock transcription factors (Hsfs) play multifaceted roles in plant growth, development, and responses to environmental factors. However, their involvement in seed dormancy and germination processes has remained elusive. In this study, we identified a wheat class B Hsf gene, TaHsf-7A, with higher expression in strong-dormancy varieties compared to weak-dormancy varieties during seed imbibition.

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Physical exercise intervention can significantly improve the liver of patients with Non-alcoholic fatty liver disease (NAFLD), but it is unknown which exercise mode has the best effect on liver improvement in NAFLD patients. Therefore, we systematically evaluated the effect of exercise therapy on liver and blood index function of NAFLD patients through network meta-analysis (NMA). Through systematic retrieval of PubMed, Cochrane Library, Web of Science, EBSCO, and CNKI (National Knowledge Infrastructure), two reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies by means of databases from inception to January 2023.

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Ultrafast laser is expected as a promising strategy for micro-LEDs (µ-LEDs) transfer due to its inherent property of suppressing thermal effects. However, its ultrahigh peak power and the unclear transfer mechanism make its transfer quality and efficiency unsatisfactory. Here, the study reports the high-precision mass transfer of 20 µm fine-pitch µ-LEDs via in situ nanoparticles (NPs) resonance enhancement in burst mode ultraviolet picosecond laser irradiation.

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To explore immune cell infiltration and PDL1 expression in the tumor microenvironment (TME) of primary central nervous system lymphoma (PCNSL), we performed immunohistochemical staining on paraffin-embedded tumor tissues from 34 patients diagnosed with PCNSL. CD8 and CD163 positive cells were manually counted, and PDL1 expression was quantified by the H-score scoring method in the tumor center and around the tumor. The Kaplan-Meier method was used to analyze the prognostic value of the TME.

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Article Synopsis
  • CXCL13 and its receptor CXCR5 are important in understanding the tumor microenvironment for CNS diffuse large B-cell lymphoma (DLBCL).
  • CXCL13 found in cerebrospinal fluid serves as a key diagnostic and prognostic marker for CNS-DLBCL, indicating its potential clinical value.
  • The review discusses how the CXCL13-CXCR5 axis affects tumor immunity and inflammation in DLBCL and explores its future in immunotherapy applications for CNS-DLBCL.
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As a regulator of the dynamic balance between immune-activated extracellular ATP and immunosuppressive adenosine, CD39 ectonucleotidase impairs the ability of immune cells to exert anticancer immunity and plays an important role in the immune escape of tumor cells within the tumor microenvironment. In addition, CD39 has been studied in cancer patients to evaluate the prognosis, the efficacy of immunotherapy (e.g.

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Background: Treponema pallidum (Tp) is a widespread and destructive pathogen that leads to syphilis. As the acknowledged executor of host immunity, macrophage plays vital roles in combating the invasion and migration of Tp. However, the mechanisms of these processes are largely unknown, especially the critical driver genes and associated modifications.

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Introduction: Seed dormancy (SD) significantly decreases under high temperature (HT) environment during seed maturation, resulting in pre-harvest sprouting (PHS) damage under prolonged rainfall and wet weather during wheat harvest. However, the molecular mechanism underlying HT-mediated SD remains elusiveSeed dormancy (SD) significantly decreases under high temperature (HT) environment during seed maturation, resulting in pre-harvest sprouting (PHS) damage under prolonged rainfall and wet weather during wheat harvest. However, the molecular mechanism underlying HT-mediated SD remains elusive.

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Calcium-dependent protein kinases (CPKs), important sensors of calcium signals, play an essential role in plant growth, development, and stress responses. Although the CPK gene family has been characterized in many plants, the functions of the CPK gene family in wheat, including their relationship to seed dormancy and germination, remain unclear. In this study, we identified 84 TaCPK genes in wheat (TaCPK1-84).

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  • The alpine sandy dune ecosystem is highly affected by climate change, and the study focuses on ecological stoichiometry, which is how carbon (C), nitrogen (N), and phosphorus (P) interact in plants and soils.
  • Researchers examined three types of sandy dunes alongside the Yarlung Zangbo River, assessing plant communities, soil properties, and C:N:P ratios to understand the stoichiometric dynamics.
  • Results showed that sandy dune type influenced C:N:P ratios, revealing that phosphorus (P) is a critical limiting nutrient and that the stoichiometry is affected by soil characteristics like moisture and pH.
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Background: Several operative procedures have been introduced to reshape the aesthetic mandibular angle, but unaesthetic results have occurred now and then. Most studies focused only on the facial shape in frontal view but not on the new gonion angle and gonial position in lateral view. The authors describe a new and satisfactory surgical method of mandibular angle contouring to reconstruct the new aesthetic mandibular angle and reshape an oval face for the excessive prominence of the mandibular angle.

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Primary central nervous system lymphoma (PCNSL) is a rare extranodal non-Hodgkin lymphoma with poor prognosis. In recent years, the emergence of genetic subtypes of systematic diffuse large B-cell lymphoma has highlighted the importance of molecular genetics, but large-scale research on the molecular genetics of PCNSL is lacking. Herein, we summarize the frequent gene mutations and discuss the possible pathogenesis of PCNSL.

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The endoplasmic reticulum (ER) is a critical organelle that preserves the protein homeostasis of cells. Under various stress conditions, cells evolve a degree of capacity to maintain ER proteostasis, which is usually augmented in tumor cells, including colorectal cancer (CRC) cells, to bolster their survival and resistance to apoptosis. Bortezomib (BTZ) is a promising drug used in CRC treatment; however, its main limitation result from drug resistance.

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Background: Previous studies have confirmed that the bacterium (TP) or its proteins provide signals to macrophages that induce an inflammatory response; however, little is known about the negative regulation of this macrophage-mediated inflammatory response during syphilis infection or the underlying mechanism. Recent evidence suggests the role of the RNA modification, N-adenosine methylation (m6A), in regulating the inflammatory response and pathogen-host cell interactions. Therefore, we hypothesized that m6A plays a role in the regulation of the inflammatory response in macrophages exposed to TP.

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