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Deprecated: Implicit conversion from float 251.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Eur+J+Clin+Microbiol+Infect+Dis 2021 ; 40 (8): 1623-1631 Nephropedia Template TP
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Therapeutic efficacy of chitosan nanoparticles loaded with BCG-polysaccharide nucleic acid and ovalbumin on airway inflammation in asthmatic mice #MMPMID33666790
In this study, immunoregulation and desensitization therapies were jointly applied in the treatment of asthma, in which chitosan (CS) nanoparticles were used. BALB/c mice were selected and mouse models of asthma were constructed. Mice were divided into 7 groups. A double-chamber plethysmograph, MTT, hematoxylin-eosin staining, and ELISA were used. The expression levels of IL-4 and IL-5 in lung tissue cells were detected. CS-BCG-PSN-OVA sustained-release vaccines significantly alleviated airway hyperresponsiveness (AHR) in asthmatic mice. The numbers of total lymphocytes and eosinophils in BALF were remarkably reduced. The expression levels of IL-4 and IL-5 in lung tissue cells of the treatment groups were dramatically decreased. CS-BCG-PSN-OVA was found in vitro to be able to inhibit OVA-induced T-cell proliferation and upregulate the proportion of CD4+CD25+Foxp3+ T cells. CS-BCG-PSN-OVA sustained-release vaccine could significantly attenuate AHR and airway inflammation in asthmatic mice. Thus, it has a promising application prospect for the treatment of bronchial asthma.