Background The aim of the study was to determine the potential of a low-fat diet (LFD) to protect against oxidative and inflammatory damage in the course of asthma and obesity when combined with antioxidants (alpha-lipoic acid–ALA, apocynin–APO) or a probiotic (P) ( Lactobacillus casei ). Methods The experiments were carried out on ten groups of male C57/BL6 mice that were fed standard fat (SFD), low-fat (LFD), or high-fat (HFD) diets. Ovalbumin (OVA, administered subcutaneously and by inhalation) was used to sensitize the animals. IL-1α, IL-10, eotaxin-1, leptin, and TNF-α concentrations were examined in blood, while total glutathione (GSHt), reduced glutathione (GSH), oxidized glutathione (GSSG) and –SH groups were measured in lung homogenates. Results LFD in combination with the analyzed compounds (APO, P, ALA) significantly decreased the concentration of IL-1α compared to the OVA + HFD group ( p < 0.01; p = 0.025; p = 0.002, respectively). Similarly, the treated mice demonstrated lower eotaxin-1 concentrations compared to the HFD group ( p < 0.001). Moreover, supplementation of LFD with probiotics significantly increased the concentration of IL-10 vs. controls ( p < 0.001) and vs. untreated OVA-sensitized and challenged/obese mice ( p < 0.001). Animals administered APO/ALA with LFD displayed a significant decrease in TNF-α concentration compared to OVA + HFD mice ( p = 0.013; p = 0.002 respectively). Those treated with ALA displayed significantly improved GSH levels ( p = 0.035) compared to OVA + HFD mice. Conclusions Supplementation of the tested compounds with LFD appears to have a positive influence on the glutathione redox status of pulmonary tissues and selected inflammatory parameters in mouse blood. Supplementary Information The online version contains supplementary material available at 10.1007/s43440-023-00527-8.
【저자키워드】 oxidative stress, antioxidants, reactive oxygen species, High-fat diet, Low-fat diet,