Fibrin Amyloid Accumulation leading to aerobic energy production failure may Progress Slowly or Rapidly

THE CARCO STRESS MODEL: Carbon Monoxide Exposure → Peroxynitrite Formation in Capillaries → Fibrin Amyloid Formation → Microvascular Obstruction → Reduced Mitochondrial Oxygen Availability → Aerobic Energy Production Failure → Systemic Dysfunction

The Speed of Progression Depends on the Magnitude of Physiological Stress

The rate at which microvascular obstruction develops is not fixed. It depends on how rapidly fibrin amyloid structures continue to form, how many additional microvessels they obstruct, and the combined effects of carbon monoxide exposure, oxygen availability, inflammatory activity, and the body’s remaining capacity to compensate.

Under relatively favorable conditions, only a small number of additional microvessels may become obstructed at a time, allowing the damage to accumulate gradually over decades. Under severe physiological stress, however, large numbers of microvessels may become obstructed within seconds or minutes, resulting in rapid impairment of tissue oxygen delivery.

1. Continuous Very Low-Level Carbon Monoxide Exposure – Decades

Continuous exposure to very low concentrations of carbon monoxide may cause fibrin amyloid–related microvascular obstruction to develop slowly over decades. Because only a small number of additional microvessels become obstructed at any given time, tissue oxygen delivery initially remains largely compensated.

Factors that may slow progression include:

• Adequate oxygen availability.
• Low indoor carbon dioxide levels and good ventilation.
• Absence of significant inflammatory or infectious stress.
• Sufficient physiological reserve and compensatory capacity.

Under these conditions, microvascular obstruction may accumulate slowly over decades before tissue oxygen delivery and normal physiological function become significantly impaired.

2. Repeated Low-to-Moderate Carbon Monoxide Exposure Peaks — Months to Years

Repeated peaks of low-to-moderate carbon monoxide exposure may accelerate fibrin amyloid formation and microvascular obstruction. Each exposure peak may cause additional microvessels to become obstructed.

Under less favorable conditions, progression may accelerate substantially.

Examples include:

• Higher carbon monoxide exposure.
• Reduced oxygen availability.
• Elevated indoor carbon dioxide levels.
• Inflammatory states or infection.
• Impaired compensatory capacity.
• Multiple physiological stressors occurring simultaneously.

As the number of obstructed microvessels increases, tissue oxygen delivery progressively deteriorates, allowing significant impairment to develop over months or years.

3. Acute High-Level Carbon Monoxide Exposure — Seconds to Minutes

High-level carbon monoxide exposure cause widespread fibrin amyloid formation and microvascular obstruction within seconds or minutes. Because large numbers of microvessels becomes obstructed over a very short period, tissue oxygen delivery rapidly deteriorates.

4. Inflammation or Infection Can Cause a Major Increase in Microvascular Obstruction – Days to Weeks

During inflammation or infection, the body produces and recruits increased numbers of platelet-neutrophils to the affected area.

Severe physical stress provides a massive supply of platelet-neutrophil complexes, allowing carbon monoxide to rapidly drive peroxynitrite formation, NET release, and severe fibrin amyloid accumulation.

This provides a mechanism by which a fibrin amyloid burden that might otherwise develop gradually could form much more rapidly during a major biological stress.

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