[Expression of the Bax proapoptotic factor in asthmatic patients]

Constantin Cristian Grigoraş1, Adriana Grigoraş, Traian Mihăescu

  • 1Spitalul Clinic de Pneumologie Iaşi, Ambulatoriul de specialitate. c_grigoras@hotmail.com

Pneumologia (Bucharest, Romania)
|June 11, 2009
PubMed

Insights

Asthma patients show decreased expression of the Bax factor in respiratory cells, even in mild cases. This finding in apoptosis regulation may offer new therapeutic strategies for asthma.

Area of Science:

  • Cell Biology
  • Immunology
  • Respiratory Medicine

Context:

  • Apoptosis, or programmed cell death, is crucial for maintaining tissue homeostasis.
  • Mitochondria play a central role in the intrinsic apoptotic pathway.
  • The Bcl-2 family of proteins regulates mitochondrial outer membrane permeability during apoptosis.

Purpose:

  • To investigate alterations in the expression of the Bax factor, a key pro-apoptotic protein, in the respiratory epithelium of asthma patients.
  • To determine if Bax expression changes are associated with asthma severity.

Summary:

  • This study examined Bax factor expression in the respiratory epithelium of 21 asthma patients using immunotyping.
  • Results revealed a decreased expression of Bax in epithelial cells of asthma patients, including those with mild asthma, compared to controls.
  • The findings highlight the role of altered apoptosis in asthma pathogenesis.

Impact:

  • Identifies a potential biomarker for asthma.
  • Suggests that modulating apoptosis pathways, specifically involving Bax, could be a future therapeutic target for asthma.
  • Contributes to understanding the molecular mechanisms underlying respiratory diseases.

Related Concept Videos

Asthma I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
Asthma: Pathogenesis and Management01:20

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-II: Pathophysiology and Classification01:26

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 III: Clinical Manifestations01:13

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
Asthma-I: Introduction01:29

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...