Adverse health effects of indoor moulds

Elena Piecková1

  • 1Slovak Medical University, Bratislava, Slovakia.

Insights

Poor indoor air quality in buildings is linked to illnesses like sick building syndrome (SBS). Fungal growth and its toxic metabolites, such as beta-D-glucan and mycotoxins, are key contributors to these health issues.

Area of Science:

  • Environmental Health
  • Mycology
  • Toxicology

Background:

  • Sick Building Syndrome (SBS) is linked to poor indoor air quality.
  • Indoor humidity is a significant factor associated with SBS symptoms.
  • Indoor fungal growth is increasingly recognized as a contributor to building-associated illnesses.

Purpose of the Study:

  • To explore the role of fungal metabolites in building-associated illnesses.
  • To identify the carriers and toxic potential of fungal metabolites in indoor environments.
  • To understand the impact of chronic low-level exposure to fungal toxicants.

Main Methods:

  • Analysis of fungal metabolites (beta-D-glucan, mycotoxins, VOCs) found in indoor environments.
  • Investigation of fungal propagules, aerosols, detritus, and house dust as metabolite carriers.
  • Consideration of particle deposition in the respiratory tract, from upper airways to alveoli.

Main Results:

  • Fungal metabolites like beta-D-glucan, mycotoxins, and VOCs act as irritants and immunomodulators.
  • Micromycetal propagules, aerosols, detritus, and house dust carry toxic fungal metabolites.
  • Particles reaching the alveoli possess the highest toxic potential, while larger spores are often trapped in the upper respiratory tract.

Conclusions:

  • Fungal metabolites are significant contributors to building-associated illnesses.
  • Understanding the carriers and deposition of fungal toxicants is crucial for assessing health risks.
  • Chronic exposure to mixed fungal toxicants and indoor stressors may lead to synergistic adverse health effects, including neuroendocrine-immune changes.

Related Concept Videos

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...
Types of Toxins01:36

Types of Toxins

Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Biodeterioration01:28

Biodeterioration

Biodeterioration refers to the unwanted alteration of materials caused by microorganisms—especially fungi—which damage both organic substrates (paper, wood, textiles) and inorganic ones (stone, plaster, glass). Unlike abiotic decay, biodeterioration results from biological activity that produces physical disruption and chemical degradation.Physical deterioration occurs as fungal hyphae penetrate pores, cracks, and surface irregularities. Hyphal turgor pressure, thigmotropic growth along...
Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
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...