Lab Anim Res.  2019 Aug;35(2):30-38. 10.1186/s42826-019-0007-z.

Tracking acute phase protein response during acute and chronic Toxoplasma gondii infection

• Atmaca HT
• Gazyagci A
• Terzi OS
• Dincel GC
• Sumer T

• KMID: 2470105
• DOI: http://doi.org/10.1186/s42826-019-0007-z

Abstract

Toxoplasmosis is a disease caused by the protozoan Toxoplasma gondii, which occurs worldwide in mammals and birds. Brain is the primary target organ because Toxoplasma gondii is a ubiquitous intracellular parasite that causes most frequently life-threatening encephalitis in immunocompromised patients. Relation of tissue cysts number, histopathology score and acute phase proteins were investigated. In this study, 36 mice are infected with Me49 strain of Toxoplasma gondii. The control group has 6 healthy mice. After inoculation of Toxoplasma gondii, at 10., 15., 20., 30., 45., 60. days, 6 each mice euthanized after collection of blood samples. Hemopexin, haptoglobulin, macroglobulin, serum amyloid A and clusterin levels are determined by ELISA. Then, brain tissues were investigated histopathologically and lesions were scored. The average cyst numbers were determined by counting three samples (25 µl each) of each brain homogenate under light microscopy. Inflammatory reaction was observed on day 10 days after inoculation (d.a.i.) The lesions were characterized by perivascular mononuclear cell infiltration, focal mononuclear cell infiltration in the meninges, and glial proliferation. Tissue cysts were observed in all Toxoplasma gondii-infected groups. The highest lesion score was observed at 60 d.a.i. And the most tissue cyst number were on day 30. d.a.i. Serum levels of hemopexin, haptoglobulin, macroglobulin, serum amyloid A and clusterin were significantly higher than the control group on day 10-20., 10., 10-30., 10.,10-45 d.a.i., respectively. High level of acute phase proteins in mice on certain days infected with Toxoplasma gondii was exhibited a relationship between brain lesions and tissue cysts.

Keyword

Toxoplasma gondii; Encephalitis; Acute phase proteins; Acute; Chronic

MeSH Terms

Acute-Phase Proteins*
Animals
Birds
Brain
Clusterin
Encephalitis
Enzyme-Linked Immunosorbent Assay
Hemopexin
Immunocompromised Host
Mammals
Meninges
Mice
Microscopy
Parasites
Serum Amyloid A Protein
Toxoplasma*
Toxoplasmosis*
Acute-Phase Proteins
Clusterin
Hemopexin
Serum Amyloid A Protein