title: Effect of probiotic bacteria on phagocytosis and respiratory burst activity of blood polymorphonuclear leukocytes (PMNL) in mice infected with Trichinella spiralis.
abstract: This study focusses on the effect of probiotic (bacteriocinogenic) strains on parasite infection and innate immunity - phagocytosis and oxidative burst of blood monocytes and polymorphonuclear leukocytes (PMNL) in mice infected with Trichinella spiralis. Bacteriocinogenic and probiotic strains of different origin (Enterococcus faecium AL41=CCM8558, Enterococcus durans ED26E/7, Lactobacillus fermentum AD1=CCM7421, Lactobacillus plantarum 17L/1) were administered daily in dose of 109CFU/ml in 100μl and mice were infected with 400 larvae of T. spiralis on 7th day of treatment. Phagocytic activity of blood leukocytes was inhibited at week 3 and 4 post infection (p.i.), i.e. in the time of massive muscle invasion with larvae T. spiralis. Administration of bacterial strains to mice prior to T. spiralis infection elevated and prolonged phagocytic activity of blood leukocytes and their ingestion capability from week 1 to 3 of the infection and the phagocytosis was inhibited only at week 4 p.i. The highest stimulative effect on phagocytosis was induced by strains E. durans ED26E/7, L. fermentum AD1=CCM7421, and L. plantarum 17L/1. The percentage of cells with respiratory burst and their enzymatic activity was increased after T. spiralis infection with the exception of week 3 p.i. In contrast, in all mice treated with bacterial strains the enzymatic stimulation was observed after the infection, with the highest intensity caused by strains E. durans ED26E/7, L. fermentum AD1=CCM7421 and L. plantarum 17L/1. The administration of probiotic strains stimulated phagocytosis and respiratory burst of blood PMNL that could contribute to a decreased larval migration and a destruction of muscle larvae and then reduced parasite burden in the host. The protective effect against T. spiralis infection was induced by all strains, but the highest reduction was recorded by E. faecium AL41=CCM8558.
authors.affiliation: Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia. Electronic address: dvoroz@saske.sk.
authors.forename: Emília
authors.initials: E
authors.lastname: Dvorožňáková
authors.affiliation: Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia.
authors.forename: Barbora
authors.initials: B
authors.lastname: Bucková
authors.affiliation: Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia.
authors.forename: Zuzana
authors.initials: Z
authors.lastname: Hurníková
authors.affiliation: University of Veterinary Medicine and Pharmacy in Košice, Komenského 73, 041 81 Košice, Slovakia.
authors.forename: Viera
authors.initials: V
authors.lastname: Revajová
authors.affiliation: Institute of Animal Physiology, Slovak Academy of Sciences, Šoltésovej 4, 040 01 Košice, Slovakia.
authors.forename: Andrea
authors.initials: A
authors.lastname: Lauková
mesh_terms: D000818:Animals; D016983:Enterococcus / Q000502:physiology; D052197:Limosilactobacillus fermentum / Q000502:physiology; D048191:Lactiplantibacillus plantarum / Q000502:physiology; D007814:Larva; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D018482:Muscle, Skeletal / Q000469:parasitology; D009504:Neutrophils; D010586:Phagocytes / Q000502:physiology*; D019936:Probiotics / Q000627:therapeutic use*; D011897:Random Allocation; D016897:Respiratory Burst / Q000502:physiology*; D013047:Specific Pathogen-Free Organisms; D017160:Trichinella spiralis / Q000502:physiology*; D014235:Trichinellosis / Q000628:therapy*
keywords: Mice; Phagocytosis; Probiotics; Respiratory burst; Trichinella spiralis