Publications by authors named "Zhijia Yu"

An iterative correction method for the stress release coefficient, leveraging numerical simulation, has been innovatively developed to address the significant error issues associated with the blind-hole method in high-stress residual stress testing of steel structures. This method effectively reduces measurement error in high residual stress regions through a discriminant iteration process. The finite element analysis technology was employed to accurately simulate the blind-hole method's test process, and additionally, Python was utilized for customizing the secondary development of ABAQUS software, thereby automating and optimizing the method.

View Article and Find Full Text PDF

Systemic lupus erythematosus (SLE) is a heterogeneous autoimmune disease with a clear genetic component. While most SLE patients carry rare gene variants in lupus risk genes, little is known about their contribution to disease pathogenesis. Amongst them, SH2B3-a negative regulator of cytokine and growth factor receptor signaling-harbors rare coding variants in over 5% of SLE patients.

View Article and Find Full Text PDF

The expanding number of rare immunodeficiency syndromes offers an opportunity to understand key genes that support immune defense against infectious diseases. However, analysis of these in patients is complicated by their treatments and comorbid infections, requiring the use of mouse models for detailed investigations. We developed a mouse model of DOCK2 immunodeficiency and herein demonstrate that these mice have delayed clearance of herpes simplex virus type 1 (HSV-1) infections.

View Article and Find Full Text PDF

Armadillo (ARM) was a gene family important to plants, with crucial roles in regulating plant growth, development, and stress responses. However, the properties and functions of ARM family members in maize had received limited attention. Therefore, this study employed bioinformatics methods to analyze the structure and evolution of ARM-repeat protein family members in maize.

View Article and Find Full Text PDF

The expanding number of rare immunodeficiency syndromes offers an opportunity to understand key genes that support immune defence against infectious diseases. However, patients with these diseases are by definition rare. In addition, any analysis is complicated by treatments and co-morbid infections requiring the use of mouse models for detailed investigations.

View Article and Find Full Text PDF
Article Synopsis
  • In antibody responses, mutated germinal center B cells are positively selected for either reentry or differentiation, leading to the formation of memory B cells and antibody-secreting cells that provide long-lasting immunity.
  • The T cell cytokine interleukin-21 (IL-21) enhances the positive selection of B cells by working alongside B cell receptor (BCR) and CD40 signals, promoting the differentiation of antibody-secreting cells in vivo.
  • B cells exhibit reduced IL-21 binding and signaling due to low levels of heparan sulfate sulfation, and the enzyme Ndst1 regulates the sulfation process, suggesting a selective desensitization to IL-21 that affects how efficiently B cells are selected in germinal
View Article and Find Full Text PDF
Article Synopsis
  • - Researchers discovered a recurrent mutation in the IRF4 gene, identified as p.T95R, linked to an autosomal dominant combined immunodeficiency (CID) in seven patients from six different families, leading to severe vulnerability to opportunistic infections and low antibody levels.
  • - The mutation caused significant defects in the maturation of B cells and alterations in T cell populations, resulting in impaired immune responses, as demonstrated in both human patients and a knock-in mouse model with similar symptoms.
  • - The altered IRF4 protein exhibited unusual behaviors, including stronger DNA binding but reduced activity on typical target genes, while also activating noncanonical genes, showcasing a complex interaction that disrupts normal immune function and leads to disease.
View Article and Find Full Text PDF

IKZF1 (IKAROS) is essential for normal lymphopoiesis in both humans and mice. Previous mouse models have demonstrated the dual role for IKZF1 in both B and T cell development and have indicated differential requirements of each zinc finger. Furthermore, mutations in are known to cause common variable immunodeficiency in patients characterized by a loss of B cells and reduced Ab production.

View Article and Find Full Text PDF

Astrocytes and oligodendrocytes play essential roles in regulating neural signal transduction along neural circuits in CNS. The perfect coordination of neuron/astrocyte and neuron/oligodendrocyte entities was termed as neuron-glia integrity recently. Here we monitored the status of neuron-glia integrity via non-invasive neuroimaging methods and demonstrated the substructures of it using other approaches in an animal model of maternal separation with early weaning (MSEW), which mimics early life neglect and abuse in humans.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessionvp69n9qj49sv1u6g7317t210d1ppbcu2): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once