Essence of immunopathological conditions
Diabetes mellitus is accompanied by the development of a number of immunopathological conditions. The main and most dangerous characteristic of these pathological processes is a marked decrease in the activity of the patient's immune system. The pathological process affects absolutely all levels of the body's defense.
First of all, the clinical picture shows suppression of non-specific defense factors. An important role in this process is played by a critical decrease in the activity of the complement system. In addition, in diabetes mellitus, both cellular immunity and humoral immunity suffer severely and predictably. Together, all these pathophysiological changes form a picture of profound immunodepression, which subsequently determines the development of severe infectious complications in the patient.
Causes of immunodepression development
The formation of immunodepression in diabetes mellitus has clear pathophysiological bases. Modern pathophysiological science distinguishes two main causes of immune system suppression:
- Hypoxia. This is a crucial damaging factor that develops through several mechanisms simultaneously. First, hypoxia is directly caused by systemic circulatory and respiratory disorders in patients. Second, the glycation of hemoglobin is of critical importance. This process leads to a persistent change in the state of hemoglobin, which significantly exacerbates oxygen starvation. Third, damage to mitochondrial enzymes is observed at the cellular level.
- Metabolic disorders. Specific metabolic disorders characteristic of diabetes act as the second major cause of reduced activity of the immune system and non-specific defense factors.
Clinical manifestations (result of immunodepression)
The direct result of the immunodepression described above is the development of multiple infectious lesions. The clinical picture is characterized by involvement of various systems:
- Infectious skin lesions. Patients experience an extremely severe course of conditions such as furunculosis and carbunculosis.
- Urinary tract infections.
- Pulmonary infections.
Of particular clinical significance are infections classified as diabetes-specific. This group of pathologies includes:
- Cholecystitis.
- Otitis externa.
- Rhinocerebral mucormycosis.
Other complications of diabetes mellitus
In addition to immunopathological conditions and associated severe infections, patients with diabetes mellitus experience a wide range of other complications. In clinical practice, these patients are also diagnosed with:
- Cardiopathies.
- Cataract.
- Triglyceridemia.
- Ion metabolism disorders.
- Osteopathies. Bone tissue lesions occur predominantly in the form of osteoporosis or osteoarthropathies.
For quick memorization of diabetes-specific infections, use the mnemonic COR: Cholecystitis, Otitis (external), Rhinocerebral mucormycosis.
Class and exam questions
Which components of the immune system are affected first in diabetes mellitus?
This disease is characterized by a comprehensive decrease in activity. Non-specific defense factors, the complement system, as well as cellular and humoral immunity are impaired.
What role does hemoglobin play in the development of immunodepression in diabetes?
In diabetes mellitus, hemoglobin glycation occurs, leading to alterations in its state. This exacerbates hypoxia, which is one of the main causes of immunodepression.
Which infectious skin lesions are most characteristic of patients with diabetes?
The result of immunodepression is a severe course of skin infections such as furunculosis and carbunculosis.
Are there infections specific strictly to diabetes mellitus?
Yes, diabetes-specific infections include cholecystitis, otitis externa, and rhinocerebral mucormycosis.
What else to study on this topic
- Mechanisms of complement system activity decrease in diabetes
- Impact of mitochondrial enzyme damage on the development of hypoxia
- Pathogenesis of the severe course of furunculosis and carbunculosis
- Interrelationship of metabolic disorders and ion metabolism disturbances
- Osteopathies in diabetes: differential diagnosis of osteoporosis and osteoarthropathies
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