Publications by authors named "Xianjie Yang"

Introduction: Chronic urticaria (CU) is not traditionally classified as an allergic disease, but emerging evidence suggests a link to atopy. The quintessential marker of atopy is IgE sensitization, there is scarce information on the IgE sensitization characteristics of CU.

Methods: To investigate IgE sensitization characteristics in CU, and compare them with classic allergic diseases.

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Background: The inconsistency between serum total IgE (tIgE) and allergen-specific IgE (sIgE) results is often encountered in clinical practice, but the distribution and influencing factors of the inconsistent results have not been fully understood.

Objective: The aim of this study was to analyze the distribution and inconsistency between tIgE and sIgE test results.

Methods: A retrospective study, from the electronic medical records of 2139 patients who underwent both tIgE and sIgE tests, from January to December 2023 was reviewed.

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Introduction: Atopy is an important and non-negligible clinical phenomenon in chronic spontaneous urticaria (CSU). However, the characteristics and clinical significance of atopy in patients with CSU have not been fully described. This study aimed to analyze the characteristics and clinical significance of atopy in patients with CSU.

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Chronic urticaria (CU) is one of the most common dermatological diseases and has a significant impact on the quality of life of patients. However, the pathogenesis of this disease remains unclear. Autoimmunity in chronic spontaneous urticaria (CSU) has received considerable attention and has been studied previously.

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Introduction: Chronic spontaneous urticaria (CSU) with autoreactivity is often resistant to antihistamines. Autologous whole blood injection (AWBI) has shown potential efficacy in the treatment of this disease, but it is controversial. It is necessary to screen patients who are suitable for this therapy in advance.

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Subcutaneous immunotherapy (SCIT) and dupilumab are important treatments for patients with moderate to severe atopic dermatitis (AD). However, in clinical practice, poor response to allergen immunotherapy (AIT) or dupilumab has been observed in some patients. It is unknown whether combining dupilumab and SCIT can improve treatment responses in patients with moderate to severe AD that is resistant to dupilumab or SCIT monotherapy.

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Background: Acute urticaria (AU) may be associated with atopy, but the relationship between atopic status and the clinical features of the disease has not been fully described.

Objectives: The aim of the study was to determine the proportion of atopy in AU patients and to see whether atopy is related to the clinical characteristics of AU and whether it has an impact on the outcome of the disease.

Materials And Method: A retrospective analysis of patients with AU was performed.

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Dominant optic atrophy (DOA) is an inherited disease that leads to the loss of retinal ganglion cells (RGCs), the projection neurons that relay visual information from the retina to the brain through the optic nerve. The majority of DOA cases can be attributed to mutations in (), a nuclear gene encoding a mitochondrial-targeted protein that plays important roles in maintaining mitochondrial structure, dynamics, and bioenergetics. Although is ubiquitously expressed in all human tissues, RGCs appear to be the primary cell type affected by mutations.

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Article Synopsis
  • Symptomatic dermographism (SD) is a common type of skin condition that can be triggered by external factors, but its causes are not often documented.
  • Four young women developed SD after taking minocycline for acne or rosacea, with symptoms appearing 2-3 weeks after starting the medication.
  • The SD symptoms resolved completely one month after discontinuing minocycline, indicating a potential link between the drug and the condition, prompting the need for further research to confirm this association and understand the mechanisms involved.
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  • Acute generalized pustular psoriasis (GPP) is a severe and rare form of psoriasis marked by widespread redness and pustules, potentially arising from untreated local pustular psoriasis like acrodermatitis continua of Hallopeau (ACH).
  • Both GPP and ACH are challenging to treat and often resistant to standard psoriasis treatments, although recent biologic therapies show promise.
  • A specific case demonstrated that a patient with GPP, who initially responded well to the biologic adalimumab, later developed resistance to it and was successfully treated with narrowband ultraviolet B (NB-UVB) therapy and acitretin.
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  • Ciliary neurotrophic factor (CNTF) is a powerful neuroprotective cytokine that positively affects retinal degeneration by improving photoreceptor morphologies.
  • CNTF treatment leads to reduced oxygen consumption and enhanced glycolysis, as indicated by increased ATP levels and other metabolic markers in the retinas of treated mice.
  • The research highlights CNTF's ability to boost metabolic activities and restore vital antioxidants, suggesting new therapeutic options for retinal degenerative diseases.
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Chronic non-healing ulcers are the undesirable outcome of delayed wound healing influenced by many factors. It can be seen in patients with diabetes, autoimmune conditions and multiple primary skin conditions. But chronic non-healing ulcers secondary to atopic inflammation are rarely reported in the literature.

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The homozygous autosomal recessive truncating mutations of LDL receptor related protein associated protein 1 (LRPAP1) is a possible reason for Nonsyndromic Extreme Myopia, patients with which show typical chorioretinal degeneration. We generated an LRPAP1 knockout FDCHDPe009-B embryonic stem cell line to study mechanisms of retinal degeneration underlying LRPAP1 deficiency with the help of the CRISPR/Cas9 system. Two distinct biallelic deletions in the cell line have been confirmed, which causing a frameshift and premature stop codons thus influence the translation of LRPAP1.

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The developing retina expresses multiple bHLH transcription factors. Their precise functions and interactions in uncommitted retinal progenitors remain to be fully elucidated. Here, we investigate the roles of bHLH factors ATOH7 and Neurog2 in human ES cell-derived retinal organoids.

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LRP2 is mainly expressed in the cell membrane of epithelia, maintaining normal endocytosis of nutrients from the extracellular microenvironment and mediating growth factor signals. The deficiency of LRP2 can result in abnormal lysosomal and mitochondrial function as well as insufficient resistance to oxidative stress. LRP2-KO animals show enlarged eyes and malfunction of the retinal pigment epithelium (RPE).

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Ciliary neurotrophic factor (CNTF) has been tested in clinical trials for human retinal degeneration due to its potent neuroprotective effects in various animal models. To decipher CNTF-triggered molecular events in the degenerating retina, we performed high-throughput RNA sequencing analyses using the Rds/Prph2 (P216L) transgenic mouse as a preclinical model for retinitis pigmentosa. In the absence of CNTF treatment, transcriptome alterations were detected at the onset of rod degeneration compared with wild type mice, including reduction of key photoreceptor transcription factors Crx, Nrl, and rod phototransduction genes.

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The development of the mammalian retina is a complicated process involving the generation of distinct types of neurons from retinal progenitor cells (RPCs) in a spatiotemporal-specific manner. The progression of RPCs during retinogenesis includes RPC proliferation, cell-fate commitment, and specific neuronal differentiation. In this study, by performing single-cell RNA sequencing of cells isolated from human embryonic stem cell (hESC)-derived 3D retinal organoids, we successfully deconstructed the temporal progression of RPCs during early human retinogenesis.

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Pathological myopia (PM) is a major cause of irreversible vision impairment worldwide. We have successfully reprogrammed the peripheral blood mononuclear cells (PBMCs) from a PM patient to induced pluripotent stem cells and characterized their pluripotency and genetic stability, as well as the potential to differentiate to retinal pigment epithelium (RPE). This line may serve as a useful tool to explore the pathogenesis of PM.

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Best's disease (BD) is an inherited retinal degenerative disease caused by mutations in BEST1 gene. A human induced pluripotent stem cell (iPSC) line has been generated with integration-free Sendai virus method from peripheral blood mononuclear cells (PBMCs) of a BD patient carrying c.888C > A mutation in BEST1 gene.

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Pathological myopia (PM) is a retinal degenerative disease with an increasing prevalence in Asia. The peripheral blood mononuclear cells (PBMCs) from a patient with PM were successfully reprogrammed to induced pluripotent stem cells (iPSCs) using integration-free method, Sendai viral (SeV) vectors expressing OCT4, SOX2, KLF4 and C-MYC. This line may provide a useful resource for exploring the pathogenesis of PM.

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: Smoking and alcohol consumption have become major public health problems among Chinese women. In this study we explore the behavioral trends in smoking and alcohol consumption of Chinese women. We also explored the changes in the sociodemographic factors that affect the smoking and alcohol consumption behaviors of Chinese women at different reproductive stages.

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The production of vertebrate retinal projection neurons, retinal ganglion cells (RGCs), is regulated by cell-intrinsic determinants and cell-to-cell signaling events. The basic-helix-loop-helix (bHLH) protein Atoh7 is a key neurogenic transcription factor required for RGC development. Here, we investigate whether manipulating human ATOH7 expression among uncommitted progenitors can promote RGC fate specification and thus be used as a strategy to enhance RGC genesis.

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Retinal dystrophies are a major cause of blindness for which there are currently no curative treatments. Transplantation of stem cell-derived neuronal progenitors to replace lost cells has been widely investigated as a therapeutic option. Another promising strategy would be to trigger self-repair mechanisms in patients, through the recruitment of endogenous cells with stemness properties.

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The neural retina is a critical component of the visual system, which provides the majority of sensory input in humans. Various retinal degenerative diseases can result in the permanent loss of retinal neurons, especially the light-sensing photoreceptors and the centrally projecting retinal ganglion cells (RGCs). The replenishment of lost RGCs and the repair of optic nerve damage are particularly challenging, as both RGC specification and their subsequent axonal growth and projection involve complex and precise regulation.

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