Miró-Canturri, AndreaAyerbe-Algaba, RafaelJiménez-Mejías, Manuel EnriquePachón, JerónimoSmani, Younes2022-11-222022-11-222021-02-17Miró-Canturri A, Ayerbe-Algaba R, Jiménez-Mejías ME, Pachón J, Smani Y. Efficacy of Lysophosphatidylcholine as Direct Treatment in Combination with Colistin against Acinetobacter baumannii in Murine Severe Infections Models. Antibiotics. 2021 Feb 17;10(2):194http://hdl.handle.net/10668/4391The stimulation of the immune response to prevent the progression of an infection may be an adjuvant to antimicrobial treatment. Here, we aimed to evaluate the efficacy of lysophosphatidylcholine (LPC) treatment in combination with colistin in murine experimental models of severe infections by Acinetobacter baumannii. We used the A. baumannii Ab9 strain, susceptible to colistin and most of the antibiotics used in clinical settings, and the A. baumannii Ab186 strain, susceptible to colistin but presenting a multidrug-resistant (MDR) pattern. The therapeutic efficacies of one and two LPC doses (25 mg/kg/d) and colistin (20 mg/kg/8 h), alone or in combination, were assessed against Ab9 and Ab186 in murine peritoneal sepsis and pneumonia models. One and two LPC doses combined with colistin and colistin monotherapy enhanced Ab9 and Ab186 clearance from spleen, lungs and blood and reduced mice mortality compared with those of the non-treated mice group in both experimental models. Moreover, one and two LPC doses reduced the bacterial concentration in tissues and blood in both models and increased mice survival in the peritoneal sepsis model for both strains compared with those of the colistin monotherapy group. LPC used as an adjuvant of colistin treatment may be helpful to reduce the severity and the resolution of the MDR A. baumannii infection.enAtribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/LysophosphatidylcholineColistinDirect treatmentA. baumanniiSpleenAntimicrobial agentsPneumoniaSepsisExperimental modelsLisofosfatidilcolinasColistinaAcinetobacter baumanniiBazoAntiinfecciososNeumoníaModelos teóricosMedical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Rodentia::Muridae::Murinae::MiceMedical Subject Headings::Organisms::Eukaryota::AnimalsMedical Subject Headings::Organisms::Bacteria::Gram-Negative Bacteria::Gram-Negative Aerobic Bacteria::Gram-Negative Aerobic Rods and Cocci::Moraxellaceae::Acinetobacter::Acinetobacter baumanniiMedical Subject Headings::Chemicals and Drugs::Polycyclic Compounds::Macrocyclic Compounds::Peptides, Cyclic::Polymyxins::ColistinMedical Subject Headings::Chemicals and Drugs::Lipids::Membrane Lipids::Phospholipids::Glycerophosphates::Phosphatidic Acids::Lysophospholipids::LysophosphatidylcholinesMedical Subject Headings::Anatomy::Tissues::Lymphoid Tissue::SpleenMedical Subject Headings::Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Therapeutic Uses::Anti-Infective Agents::Anti-Bacterial AgentsMedical Subject Headings::Diseases::Respiratory Tract Diseases::Respiratory Tract Infections::PneumoniaMedical Subject Headings::Diseases::Bacterial Infections and Mycoses::Infection::SepsisMedical Subject Headings::Anatomy::Respiratory System::LungMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Models, TheoreticalMedical Subject Headings::Phenomena and Processes::Immune System Phenomena::ImmunityMedical Subject Headings::Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Therapeutic Uses::Anti-Infective Agentsresearch article33671416open access10.3390/antibiotics100201942079-6382PMC7922394