AI Article Synopsis

  • The study investigates the role of B-lymphocytes in chemical-induced asthma, focusing on how these cells respond after being sensitized to toluene diisocyanate (TDI).
  • Recent findings show that transferring TDI-sensitized B cells into naïve or genetically modified mice can trigger an asthma-like response, highlighting their significance in asthma pathology.
  • A proteomic analysis identified 16 key proteins, including cyclophilin A and cofilin 1, that are altered in sensitized B cells, suggesting they play a crucial role in initiating T lymphocyte-independent asthma responses.

Article Abstract

Introduction And Aim: The role of B-lymphocytes in chemical-induced asthma is largely unknown. Recent work demonstrated that transferring B lymphocytes from toluene diisocyanate (TDI)-sensitized mice into naïve mice, B cell KO mice and SCID mice, triggered an asthma-like response in these mice after a subsequent TDI-challenge. We applied two-dimensional difference gel electrophoresis (2D-DIGE) to describe the "sensitized signature" of B lymphocytes comparing TDI-sensitized mice with control mice.

Results: Sixteen proteins were identified that were significantly up- or down-regulated in B lymphocytes of sensitized mice. Particularly differences in the expression of cyclophilin A, cofilin 1 and zinc finger containing CCHC domain protein 11 could be correlated to the function of B lymphocytes as initiators of T lymphocyte independent asthma-like responses.

Conclusion: This study revealed important alterations in the proteome of sensitized B cells in a mouse model of chemical-induced asthma, which will have an important impact on the B cell function.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4580316PMC
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0138791PLOS

Publication Analysis

Top Keywords

chemical-induced asthma
12
lymphocytes sensitized
8
mice
8
sensitized mice
8
model chemical-induced
8
tdi-sensitized mice
8
lymphocytes
5
proteomic alterations
4
alterations lymphocytes
4
mice model
4

Similar Publications

The assessment of the allergenic potential of chemicals, crucial for ensuring public health safety, faces challenges in accuracy and raises ethical concerns due to reliance on animal testing. This paper presents a novel bioinformatic protocol designed to address the critical challenge of predicting immune responses to chemical sensitizers without the use of animal testing. The core innovation lies in the integration of advanced bioinformatics tools, including the Universal Immune System Simulator (UISS), which models detailed immune system dynamics.

View Article and Find Full Text PDF

Respiratory sensitization is a complex immunological process eventually leading to hypersensitivity following re-exposure to the chemical. A frequent consequence is occupational asthma, which may occur after long latency periods. Although chemical-induced respiratory hypersensitivity has been known for decades, there are currently no comprehensive and validated approaches available for the prospective identification of chemicals that induce respiratory sensitization, while the expectations of new approach methodologies (NAMs) are high.

View Article and Find Full Text PDF

Mechanisms underlying methylene diphenyl diisocyanate (MDI) and other low molecular weight chemical-induced asthma are unclear and appear distinct from those of high molecular weight (HMW) allergen-induced asthma. We sought to elucidate molecular pathways that differentiate asthma-like pathogenic vs nonpathogenic responses to respiratory tract MDI exposure in a murine model. Lung gene expression differences in MDI exposed immune-sensitized and nonsensitized mice vs unexposed controls were measured by microarrays, and associated molecular pathways were identified through bioinformatic analyses and further compared with published studies of a prototypic HMW asthmagen (ovalbumin).

View Article and Find Full Text PDF

Effect of plasma exosome lncRNA on isoproterenol hydrochloride-induced cardiotoxicity in rats.

Toxicol Appl Pharmacol

March 2024

Intensive Care Unit, Liyang People's Hospital, Liyang, Jiangsu 213300, China. Electronic address:

Isoprenaline hydrochloride (IH) is a β-adrenergic receptor agonist commonly used in the treatment of hypotension, shock, asthma, and other diseases. However, IH-induced cardiotoxicity limits its application. A large number of studies have shown that long noncoding RNA (lncRNA) regulates the occurrence and development of cardiovascular diseases.

View Article and Find Full Text PDF

Synthetic Chemicals: What We Have Learned and Still Need to Learn About Their Associations with Childhood Allergy and Asthma.

Curr Environ Health Rep

December 2023

Division of Clinical Immunology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, 10029, USA.

Purpose Of Review: Prenatal and childhood exposure to synthetic chemicals, such as phenols and phthalates, have been linked to asthma and allergy, but the extent of this association and the underlying mechanisms are not fully understood. Here we provide an up-to-date review of the evidence linking phenol and phthalate exposure with childhood asthma and allergy and of proposed mechanistic pathways.

Recent Findings: Five experimental and 12 epidemiological studies that examined associations between exposures to synthetic chemicals to asthma and allergic diseases were included.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!