Cuyàs Berta, Cantó Elisabet, Sanchez-Ardid Elisabet, Miró Elisenda, Alvarado-Tapias Edilmar, Román Eva, Poca Maria, Navarro Ferran, Ferrero-Gregori Andreu, Escorsell Maria Àngels, Vidal Silvia, Soriano German
Department of Gastroenterology, Hospital de la Santa Creu i Sant Pau, C/Mas Casanovas 90, 08041 Barcelona, Spain.
Department of Medicine, Universitat Autònoma de Barcelona, 08023 Barcelona, Spain.
Microorganisms. 2025 May 20;13(5):1164. doi: 10.3390/microorganisms13051164.
Infections caused by multidrug-resistant organisms (MDRO) are linked to poor outcomes, particularly in patients with cirrhosis. The underlying mechanisms are not fully understood and may involve a different immune response against MDRO. This study aimed to compare the in vitro immune response between multidrug-resistant (MDR) and antibiotic-susceptible strains. Surface protein extract and DNA extract were obtained from MDR (n = 6) and antibiotic-susceptible (n = 6) strains isolated from infected patients with cirrhosis. The extracts were used to stimulate in vitro peripheral blood mononuclear cells from healthy donors. After 48 h, cytokine levels (IFN-γ, IL-1β, IL-10, IL-12p70, MCP-1, IL-8, IL-6, MIP-1α, and MIP-1β) were measured. We observed no significant differences in cytokine production between MDR and susceptible strains. However, we identified notable interindividual variability in cytokine production for most of the cytokines studied. Only IFN-γ and IL-6 in surface extract and MCP-1 in DNA extract showed similar levels across all donors. We conclude that the cytokine profiles induced by MDR in vitro were similar to those in susceptible strains. These findings suggest that the poor prognosis associated with MDR infections is not due to a differential immune response but rather to other factors.
多重耐药菌(MDRO)引起的感染与不良预后相关,尤其是在肝硬化患者中。其潜在机制尚未完全明确,可能涉及针对MDRO的不同免疫反应。本研究旨在比较多重耐药(MDR)菌株和抗生素敏感菌株的体外免疫反应。从肝硬化感染患者中分离出MDR菌株(n = 6)和抗生素敏感菌株(n = 6),获取其表面蛋白提取物和DNA提取物。这些提取物用于刺激健康供体的体外外周血单个核细胞。48小时后,检测细胞因子水平(IFN-γ、IL-1β、IL-10、IL-12p70、MCP-1、IL-8、IL-6、MIP-1α和MIP-1β)。我们观察到MDR菌株和敏感菌株之间细胞因子产生无显著差异。然而,我们发现所研究的大多数细胞因子在个体间细胞因子产生存在显著差异。仅表面提取物中的IFN-γ和IL-6以及DNA提取物中的MCP-1在所有供体中水平相似。我们得出结论,MDR体外诱导的细胞因子谱与敏感菌株相似。这些发现表明,与MDR感染相关的不良预后并非由于免疫反应差异,而是由于其他因素。
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