Histopathological and ultrastructural assessment of atovaquone-proguanil hydrochloride combination in chronic murine toxoplasmosis
| Autor: | Manal Elzoheiry, Wafaa A. Aboukamar, Abeer A. Elhenawy, Nairmen Nabih, Manar S. Elmehankar |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Proguanil Proguanil Hydrochloride Gastroenterology Pathology and Forensic Medicine Mice Pharmacotherapy Structural Biology Internal medicine parasitic diseases Animals Medicine Cyst Atovaquone biology business.industry Brain Toxoplasma gondii biology.organism_classification medicine.disease Atovaquone/proguanil Toxoplasmosis Toxoplasmosis Animal business Toxoplasma human activities Naphthoquinones medicine.drug |
| Zdroj: | Ultrastructural Pathology. 45:376-383 |
| ISSN: | 1521-0758 0191-3123 |
| DOI: | 10.1080/01913123.2021.1984349 |
| Popis: | Over one billion people worldwide are expected to have Toxoplasma gondii infection with anonymous health problems. Available therapies are ineffective for persistent chronic toxoplasmosis. So, there is an imperative need for effective therapies to eliminate chronic tissue stage. In this study, we aimed to assess the effect of a drug combination of atovaquone and proguanil hydrochloride in the treatment of experimental chronic toxoplasmosis. Fifty Swiss Webster mice were used in the study. Forty mice were infected with Me49 type II cystogenic Toxoplasma gondii strain and allocated into four groups: infected untreated (vehicle-administered), infected and treated with cotrimoxazole (CTX) 370 mg/kg/day, infected and treated with atovaquone (ATV) 100 mg/kg/day, and infected and treated with atovaquone/proguanil (ATV/PROG) 50 mg/kg/day. An additional group of uninfected mice was used as an uninfected control group. Drug treatment was initiated 8 weeks post-infection and continued for two weeks. All mice were sacrificed 12 weeks post-infection. Parasitological and histopathological parameters were assessed. Toxoplasma gondii cysts recovered from brain tissue homogenates of both infected untreated and ATV/PROG-treated groups were examined by scanning electron microscopy. Combined ATV/PROG treatment demonstrated a significant reduction of Toxoplasma gondii cyst count in brain tissue (a reduction rate of 84.87%) compared to untreated group (P |
| Databáze: | OpenAIRE |
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