Background: Bortezomib-induced peripheral neuropathy (BiPN) is a common complication of multiple myeloma (MM) treatment that seriously affects the quality of life of patients. The purpose of the present study was to explore the therapeutic effect of paeoniflorin on BiPN and its possible mechanism.
Methods: ELISA was used to measure the level of interleukin-6 (IL6) in the plasma of MM patients, and bioinformatics analysis was used to predict the mechanism underlying the effect of paeoniflorin on peripheral neuropathy. Cell and animal models of BiPN were constructed to evaluate mitochondrial function by measuring cell viability and mitochondrial quality and labeling mitochondria with MitoTracker Green. Nerve injury in mice with BiPN was assessed by behavioral tests, evaluation of motor nerve conduction velocity, hematoxylin-eosin (HE) staining, electron microscopy and analysis of the levels of reactive oxygen species (ROS). Western blotting and immunohistochemistry (IHC) were used to assess the expression of autophagy-related proteins.
Results: In MM patients, IL6 levels were positively correlated with the degree of PN. The results of bioinformatics analysis suggested that paeoniflorin ameliorated PN by altering inflammation levels and mitochondrial autophagy. Paeoniflorin increased PC12 cell viability and mitochondrial autophagy levels, alleviated mitochondrial damage, and reduced IL6 levels. In addition, paeoniflorin effectively improved the behavior of mice with BiPN, relieved sciatic nerve injury in mice, increased the expression of LC3II/I, beclin-1, and Parkin in sciatic nerve cells, and increased the expression of LC3B and Parkin in the nerve tissue.
Conclusion: The present study confirmed that paeoniflorin significantly ameliorated peripheral neuropathy (PN) caused by bortezomib, possibly by reducing IL6 levels to regulate PARKIN-mediated mitochondrial autophagy and mitochondrial damage.
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http://dx.doi.org/10.2147/DDDT.S369111 | DOI Listing |
Pulm Ther
December 2024
Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, MI, USA.
Introduction: Asthma is a complex condition characterized by airway inflammation. Interleukin-6 (IL-6) plays a significant role in asthma pathogenesis through its effects on T cells and its association with pro-inflammatory responses. Both lung and circulating IL-6 levels are elevated in asthma.
View Article and Find Full Text PDFJ Toxicol Environ Health A
February 2025
School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea.
Ultraviolet-B (UVB) radiation is a major physical factor that induces structural changes in human skin. The aim of this study was to determine whether the novel silent information regulator 1 (sirtuin 1 SIRT1) protein activator, penilumamide, exerted any protective effects against UVB-induced skin damage using human HaCaT keratinocytes as a model. Enzymatic assays were performed to determine the SIRT1-activating ability of penilumamide, which was compared with that of resveratrol, a potent natural product SIRT1 activator with antioxidant and anti-inflammatory properties.
View Article and Find Full Text PDFJ Toxicol Environ Health A
December 2024
Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China.
Exposure to microcysatin-LR (MC-LR) is known to result in kidney damage, however the underlying mechanisms involved in MC-LR-initiated renal injury are not known. Thus, the aim of this study was to examine the effects of exposure to MC-LR on human embryo kidney (HEK 293) cell and male C57BL/6 . In the study, HEK 293 cells were incubated with MC-LR (20 µM) for 24 hr.
View Article and Find Full Text PDFJ Inflamm Res
December 2024
Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
Background: Circular RNAs (circRNAs) are a novel class of endogenous non-coding RNA molecules in eukaryotes, involved in many essential biological processes. However, their role in allergic rhinitis (AR) has not been extensively studied.
Methods: The expression levels of hsa_circRNA_100791 were measured using qRT-PCR in peripheral blood mononuclear cells (PBMCs) and nasal mucosa from AR patients.
J Inflamm Res
December 2024
School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China.
Background: Hyperuricemia (HUA), a common metabolic disorder associated with gout, renal dysfunction, and systemic inflammation, necessitates safer and more comprehensive therapeutic approaches. Traditional Tibetan medicine has a rich history of treating HUA. This study aimed to identify novel anti-hyperuricemic herb derived from traditional Tibetan medicine.
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