Estimation of Toxoplasma gondii antibodies in patients with cardiomyopathy

Area of Science:

• Infectious Diseases
• Cardiology
• Immunology

Background:

• Cardiomyopathy is a significant cause of heart failure.
• The role of infectious agents, such as Toxoplasma gondii, in cardiomyopathy pathogenesis is not fully understood.
• Serological evidence can indicate past or present infection.

Purpose of the Study:

• To investigate the potential association between Toxoplasma gondii infection and cardiomyopathy.
• To determine the prevalence of specific anti-Toxoplasma gondii antibodies in cardiomyopathy patients.

Main Methods:

• Serum samples from 56 cardiomyopathy patients and 40 controls with valvular lesions were collected.
• Indirect fluorescent antibody test (IFAT) was used for serological detection of anti-Toxoplasma gondii antibodies.
• Echocardiography, ECG, and epidemiological history were used for patient diagnosis.

Main Results:

• Antibodies to Toxoplasma gondii were detected in 12 out of 56 (21.4%) cardiomyopathy patients at a titre of 1:16.
• Positive serology was most frequent in patients diagnosed with ischemic cardiomyopathy.
• All control samples from patients with valvular lesions were negative for Toxoplasma gondii antibodies.

Conclusions:

• Toxoplasma gondii infection may be implicated in the development or exacerbation of cardiomyopathy.
• Ischemic cardiomyopathy shows a higher association with Toxoplasma gondii seropositivity.
• Further research is warranted to elucidate the direct causal link and mechanisms.