相关实验视频

Updated: Jul 27, 2025

Murine Model of Allergen Induced Asthma

Murine Model of Allergen Induced Asthma

Published on: May 14, 2012

协作交叉菌株CC011/UncJ作为T2高,严重喘的新型小鼠模型

Lauren J Donoghue^1,2, Kathryn M McFadden¹, Daniel Vargas¹

¹Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Respiratory research

|June 9, 2023

概括

研究人员使用CC011/UncJ菌株确定了一种用于严重喘的新小鼠模型. 这种模型表现出T2高的喘特征,包括耐固醇呼吸道炎症,为严重喘内型提供了新的见解.

科学领域:

免疫学免疫学免疫学
遗传学是一个遗传学.
肺部病理学肺部病理学

背景情况:

喘表现出明显的异质性与不同的内型 (例如,T2-高,T2-低).
严重的喘很难管理,现有的小鼠模型不能充分代表其多样化的内型.
传统小鼠模型中的有限遗传多样性限制了对严重喘机制的理解.

研究的目的:

确定一种针对严重喘内型的新型小鼠模型.
为了利用协作十字 (CC) 鼠群的遗传多样性进行喘建模.
为了描述新的CC菌株对慢性过敏原暴露的反应.

主要方法:

五个CC菌株和BALB/cJ小鼠长期暴露在室内灰尘虫 (HDM) 过敏原中五周.
评估气道炎症,肺抵抗和气道改造.
对Th2介导反应的分析,包括IgE水平,Th2细胞因子和CD4+T细胞依赖性.
对德克萨米他耐药性的评估.

主要成果:

CC011/UncJ (CC011) 的小鼠表现出极端的HDM反应:严重的气道异敏性,高肺抵抗,气道重塑和高死亡率.
与BALB/cJ小鼠相比,CC011小鼠表现出增强的Th2反应 (IgE,Th2细胞因子).
在CC011小鼠中,呼吸道叶绿素是CD4+T细胞依赖的,并且对德克萨米他治疗有抗性.

结论:

CC011菌株作为T2高严重喘的新模型,由自然遗传变异驱动.
这种模型的CD4+T细胞依赖性和类固醇耐药性为严重喘机制提供了宝贵的见解.
对CC011表型的遗传基础的进一步研究将揭示严重喘病因.

更多相关视频

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

Published on: April 13, 2010

An IL-8 Transiently Transgenized Mouse Model for the In Vivo Long-term Monitoring of Inflammatory Responses

An IL-8 Transiently Transgenized Mouse Model for the In Vivo Long-term Monitoring of Inflammatory Responses

Published on: July 7, 2017

相关概念视频

Asthma-II: Pathophysiology and Classification

Asthma-II: Pathophysiology and Classification

Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:

Asthma: Pathogenesis and Management

Asthma: Pathogenesis and Management

Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.

Asthma-IV: Diagnostic and Management

Asthma-IV: Diagnostic and Management

The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:

Asthma-I: Introduction

Asthma-I: Introduction

Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...