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Proinflammatory and regulatory cytokine levels in AIDS cachexia
G Baronzio1, A Zambelli, D Comi
1Hyperthermia and Oncology Session, Centri Clinici Chirurgici Padre Pio, Va, Italy. barongf@infoplus.it
Insights
This study found that AIDS cachectic patients have elevated levels of pro-inflammatory cytokines, Interleukin-1 beta, Interleukin-6, and Tumor Necrosis Factor alpha, and reduced levels of regulatory Interleukin-12, correlating with weight loss.
Area of Science:
- Immunology
- Biochemistry
- Clinical Medicine
Background:
- Acquired Immunodeficiency Syndrome (AIDS) can lead to cachexia, a complex metabolic syndrome.
- Cytokine dysregulation is implicated in the pathophysiology of AIDS cachexia.
Purpose of the Study:
- To investigate serum concentrations of specific inflammatory and regulatory cytokines in AIDS cachectic patients.
- To compare cytokine profiles between AIDS cachectic patients and a control group.
- To explore correlations between cytokine levels and weight loss in AIDS cachexia.
Main Methods:
- Serum samples were collected from ten AIDS cachectic patients and a control group.
- Concentrations of Interleukin-1 beta (IL-1β), Tumor Necrosis Factor alpha (TNF-α), Interleukin-6 (IL-6), and Interleukin-12 (IL-12) were measured.
Main Results:
- AIDS cachectic patients exhibited significantly higher serum levels of IL-1β, IL-6, and TNF-α compared to controls.
- A significant decrease in serum IL-12 levels was observed in AIDS cachectic patients.
- Weight loss showed a significant positive correlation with IL-1β and IL-6 levels.
- A negative correlation was found between IL-1β and IL-12, suggesting a regulatory role for IL-12.
Conclusions:
- An imbalance in cytokine profiles, characterized by increased pro-inflammatory and decreased regulatory cytokines, is associated with AIDS cachexia.
- IL-1β and IL-6 are significantly correlated with weight loss in this patient group.
- IL-12 plays a crucial regulatory role in advanced stages of AIDS, potentially mitigating cachexia.
Abstract:
The serum concentrations of inflammatory (Interleukin-1 beta, Tumor necrosis alpha, Interleukin-6) and regulatory cytokines (Interleukin twelve) have been studied in ten AIDS cachectic patients and compared to a control group. A cytokine imbalance, and peculiarly a significant increase in proinflammatory cytokines (Interleukin-1, Interleukin-6, Tumor necrosis Factor alpha) and a decrease in regulatory cytokines such as Interleukin-12 were found. A significant correlation resulted between weight loss and Interleukin-1 beta and 6. A negative correlation between Interleukin-1 and 12 was noted, indicating that this last cytokine has an important regulatory role also in advanced state of the disease.