PMID- 31947510 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 2076-2607 (Print) IS - 2076-2607 (Electronic) IS - 2076-2607 (Linking) VI - 8 IP - 1 DP - 2020 Jan 14 TI - Immunobiotic and Paraprobiotic Potential Effect of Lactobacillus casei in a Systemic Toxoplasmosis Murine Model. LID - 10.3390/microorganisms8010113 [doi] LID - 113 AB - One of the main characteristics of probiotics is their ability to stimulate and modulate the immune response regardless of their viability. Lactobacillus casei (Lc) can stimulate local and systemic immunity, in addition to the activation of macrophages at sites distant from the intestine. Activated macrophages limit the replication of intracellular protozoa, such as Toxoplasma gondii, through the production of nitric oxide. The present study aimed to evaluate the protection generated by treatment with viable and non-viable Lc in the murine systemic toxoplasmosis model. CD1 male mice were treated with viable Lc (immunobiotic) and non-viable Lc (paraprobiotic), infected with tachyzoites of Toxoplasma gondii RH strain. The reduction of the parasitic load, activation of peritoneal macrophages, inflammatory cytokines, and cell populations was evaluated at 7 days post-infection, in addition to the survival. The immunobiotic and paraprobiotic reduced the parasitic load, but only the immunobiotic increased the activation of peritoneal macrophages, and the production of interferon-gamma (IFN-gamma), tumor necrosis factor (TNF), and interleukin-6 (IL-6) while the paraprobiotic increased the production of monocyte chemoattractant protein-1 (MCP-1) and T CD4(+)CD44(+) lymphocytes. Viable and non-viable Lc increases survival but does not prevent the death of animals. The results provide evidence about the remote immunological stimulation of viable and non-viable Lc in an in vivo parasitic model. FAU - Salas-Lais, Angel Gustavo AU - Salas-Lais AG AD - Departamento de Microbiologia y Proteomica Ocular de la Unidad de Investigacion del Instituto de Oftalmologia "Fundacion de Asistencia Privada Conde de Valenciana I.A.P.", Chimalpopoca 14, Obrera, Ciudad de Mexico 06800, Mexico. AD - Laboratorio de Tecnicas Fototermicas, Departamento de Ciencias Basicas, Unidad Profesional Interdisciplinaria de Biotecnologia del Instituto Politecnico Nacional, Acueducto 550, La Laguna Ticoman, Ciudad de Mexico 07340, Mexico. AD - Programa de Posgrado en Biomedicina y Biotecnologia Molecular, Escuela Nacional de Ciencias Biologicas, Instituto Politecnico Nacional, Mexico City 11340, Mexico. FAU - Robles-Contreras, Atzin AU - Robles-Contreras A AUID- ORCID: 0000-0002-8393-3556 AD - Area de Imunoproteomica Ocular, Departamento Centro de Investigacion Biomedica, Fundacion Hospital "Nuestra Senora de la Luz", Ezequiel Montes 135, Tabacalera, Ciudad de Mexico 06030, Mexico. FAU - Balderas-Lopez, Jose Abraham AU - Balderas-Lopez JA AD - Laboratorio de Tecnicas Fototermicas, Departamento de Ciencias Basicas, Unidad Profesional Interdisciplinaria de Biotecnologia del Instituto Politecnico Nacional, Acueducto 550, La Laguna Ticoman, Ciudad de Mexico 07340, Mexico. FAU - Bautista-de Lucio, Victor Manuel AU - Bautista-de Lucio VM AUID- ORCID: 0000-0003-1836-8738 AD - Departamento de Microbiologia y Proteomica Ocular de la Unidad de Investigacion del Instituto de Oftalmologia "Fundacion de Asistencia Privada Conde de Valenciana I.A.P.", Chimalpopoca 14, Obrera, Ciudad de Mexico 06800, Mexico. LA - eng PT - Journal Article DEP - 20200114 PL - Switzerland TA - Microorganisms JT - Microorganisms JID - 101625893 PMC - PMC7023318 OTO - NOTNLM OT - Lactobacillus casei OT - activated macrophages OT - immunobiotic OT - paraprobiotic OT - systemic toxoplasmosis OT - tachyzoites COIS- The authors declare no conflict of interest. EDAT- 2020/01/18 06:00 MHDA- 2020/01/18 06:01 PMCR- 2020/01/14 CRDT- 2020/01/18 06:00 PHST- 2019/12/01 00:00 [received] PHST- 2020/01/07 00:00 [revised] PHST- 2020/01/08 00:00 [accepted] PHST- 2020/01/18 06:00 [entrez] PHST- 2020/01/18 06:00 [pubmed] PHST- 2020/01/18 06:01 [medline] PHST- 2020/01/14 00:00 [pmc-release] AID - microorganisms8010113 [pii] AID - microorganisms-08-00113 [pii] AID - 10.3390/microorganisms8010113 [doi] PST - epublish SO - Microorganisms. 2020 Jan 14;8(1):113. doi: 10.3390/microorganisms8010113.