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At a dose of 5 µM, L‑NAME displayed the strongest ability to reverse the antiproliferative effects of BMSCs in the co‑culture system. Both L‑NAME treatment and shRNA‑mediated knockdown of iNOS expression significantly decreased the suppressive effects of BMSCs, downregulated iNOS expression at the mRNA and protein levels in BMSCs, and enhanced STAT5 phosphorylation in T cells. BMSCs inhibited the proliferation of nicotine‑exposed T cells, which was associated with iNOS expression in BMSCs and decreased STAT5 phosphorylation in T cells. The present study indicated the potential mechanisms underlying the beneficial effects of BMSC infusion in patients with chronic smoking‑induced COPD and emphysema.Ibrutinib, an FDA approved, orally administered BTK inhibitor, has demonstrated high response rates to diffuse large B‑cell lymphoma (DLBCL), however, complete responses are infrequent and acquired resistance to BTK inhibition can emerge. The present study investigated the role of the platelet‑derived growth factor D (PDGFD) gene and the ibrutinib resistance of DLBCL in relation to epidermal growth factor receptor (EGFR). Bioinformatics was used to screen and analyze differentially expressed genes (DEGs) in complete response (CR), partial response (PR) and stable disease (SD) in DLBCL treatment with ibrutinib, and Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed to analyze enriched the signaling pathways increasing DEGs. The Search Tool for Interactions of Chemicals database was used to analyze the target genes of ibrutinib. An interaction network of DEGs, disease‑related genes and ibrutinib was constructed. The expression of PDGFD in tissues that were resistant ort PDGFD could indirectly target the ibrutinib target gene EGFR, indicating that PDGFD could regulate DLBCL via EGFR. IHC results showed high expression of PDGFD in diffuse large B‑cell lymphoma tissues with ibrutinib tolerance. PDGFD expression in ibrutinib‑resistant DLBCL cells was higher compared with in parental cells. Following interference with PDGFD expression in ibrutinib‑resistant DLBCL cells, the IC50 value of ibrutinib decreased, the rate of apoptosis increased and EGFR expression decreased. In brief, EGFR overexpression can reverse the resistance of DLBCL to ibrutinib via PDGFD interference, and PDGFD induces the resistance of DLBCL to ibrutinib via EGFR.Angiotensin II (AngII) serves an important inflammatory role in cardiovascular disease; it can induce macrophages to differentiate into the M1‑type, produce inflammatory cytokines and resist pathogen invasion, and can cause a certain degree of damage to the body. Previous studies have reported that connexin 43 (Cx43) and NF‑κB (p65) are involved in the AngII‑induced inflammatory pathways of macrophages; however, the mechanisms underlying the effects of Cx43 and NF‑κB (p65) on AngII‑induced macrophage polarization have not been determined. Thus, the present study aimed to investigate the effects of Cx43 and NF‑κB (p65) on the polarization process of AngII‑induced macrophages. The macrophage polarization‑related proteins and mRNAs were examined by flow cytometry, western blotting, immunofluorescence, ELISA and reverse transcription‑quantitative PCR analyses. RAW264.7 macrophages were treated with AngII to simulate chronic inflammation and it was subsequently found that AngII promoted RAW 264.7 macrophage polarization towards the M1‑type by such effects as the release of inducible nitric oxide synthase (iNOS), tumour necrosis factor (TNF)‑α, IL‑1β, the secretion of IL‑6, and the expression of M1‑type indicators, such as CD86. Simultaneously, compared with the control group, the protein expression levels of Cx43 and phosphorylated (p)‑p65 were significantly increased following AngII treatment. The M1‑related phenotypic indicators, iNOS, TNF‑α, IL‑1β, IL‑6 and CD86, were inhibited by the NF‑κB (p65) signalling pathway inhibitor BAY117082. Similarly, the Cx43 inhibitors, Gap26 and Gap19, also inhibited the expression of M1‑related factors, and the protein expression levels of p‑p65 in the Gap26/Gap19 groups were significantly decreased compared with the AngII group. Altogether, these findings suggested that AngII may induce the polarization of RAW264.7 macrophages to the M1‑type through the Cx43/NF‑κB (p65) signalling pathway.Low levels of pesticides persist in the environment and can affect the health of exposed subjects. Oxidative stress is considered as one of the mechanisms responsible for the adverse effects on human health and some molecules may represent useful biomarkers for the evaluation of this physiological balance. This study investigated the role of these biomarkers, such as advanced oxidation protein products (AOPP), advanced glycation end‑products (AGE) and reactive oxygen metabolites (ROMs) in relation to genetic polymorphisms of paraoxonase (PON)1, PON2, glutathione S‑transferase pi 1 (GSTP1), glutathione S‑transferase theta 1 (GSTT1) and glutathione S‑transferase mu 1 (GSTM1). An increase in the levels of these biomarkers is usually inversely associated with the depletion of the biological antioxidant potential (BAP). The results revealed a statistically significant difference in the sex‑dependent variation of AGE, BAP, AOPP and ROM protein levels. Furthermore, an association between the PON2 S331C gene polymorphism and the serum levels of AOPP, ROMs and BAP was found. Thus, compared with AGE, the levels of AOPP and ROMs provided a more sensitive biomarker, with an improved association with the PON2 genotype. Such an association strengthen the importance of PON in the occurrence of oxidative stress. According to these results, an individual's genetic background may be taken into account for the health surveillance of individuals occupationally exposed to pesticides, in order to define a cluster of highly susceptible workers so as to guarantee greater protection.Resistance to the chemotherapeutic drug cisplatin has been documented in various types of cancer, while the increased expression of β‑catenin has been observed in cisplatin‑resistant ovarian cancer. However, the involvement of β‑catenin in cisplatin resistance is unclear. The present study investigated the antitumor effect of cisplatin on the proliferation, invasion and apoptosis of breast cancer (BC) cells following β‑catenin silencing in BC, which is the most frequent type of malignancy among women. The expression of β‑catenin in BC tissues and cell lines was measured by reverse transcription‑quantitative polymerase chain reaction, and the association between expression levels and clinical characteristics was statistically analyzed. The viability of BC cell lines treated with siR‑β‑catenin or with siR‑β‑catenin and cisplatin in combination was determined using a Cell Counting Kit‑8 assay. The migratory and invasive abilities of BC cells treated with both siR‑β‑catenin and cisplatin were examined with Transw MCF‑7 cells. In conclusion, β‑catenin may be of value as a therapeutic target during cisplatin treatment in patients with BC treated with cisplatin.Following the publication of the article, the authors realized that they have overlooked acknowledging the assistance they received from the Murine Phenotyping Core at NHLBI. Therefore, the Acknowledgements section of the Declarations should also have stated the following 'We would like to thank the Murine Phenotyping Core at NHLBI for all their help with the mouse experiments, including Dr Danielle Springer, Audrey Noguchi, Michele Allen, Heather Potts and Morteza Peiravi.' The authors regret their oversight in failing to include this information in the Acknowledgements section of their paper. [the original article was published in International Journal of Molecular Medicine 45 485‑496, 2020; DOI 10.3892/ijmm.2019.4435].Prostaglandin E receptor subtype 4 (EP4) is widely distributed in the heart, but its role in hepatic ischemia/reperfusion (I/R), particularly in mitochondrial permeability transition pore (MPTP) modulation, is yet to be elucidated. In the present study, an EP4 agonist (CAY10598) was used in a rat model to evaluate the effects of EP4 activation on liver I/R and the mechanisms underlying this. selleckchem I/R insult upregulated hepatic EP4 expression during early reperfusion. In addition, subcutaneous CAY10598 injection prior to the onset of reperfusion significantly increased hepatocyte cAMP concentrations and decreased serum ALT and AST levels and necrotic and apoptotic cell percentages, after 6 h of reperfusion. Moreover, CAY10598 protected mitochondrial morphology, markedly inhibited mitochondrial permeability transition pore (MPTP) opening and decreased liver reactive oxygen species levels. This occurred via activation of the ERK1/2‑GSK3β pathway rather than the janus kinase (JAK)2‑signal transducers and activators of transcription (STAT)3 pathway, and resulted in prevention of mitochondria‑associated cell injury. The MPTP opener carboxyatractyloside (CATR) and the ERK1/2 inhibitor PD98059 also partially reversed the protective effects of CAY10598 on the liver and mitochondria. The current findings indicate that EP4 activation induces ERK1/2‑GSK3β signaling and subsequent MPTP inhibition to provide hepatoprotection, and these observations are informative for developing new molecular targets and preventative therapies for I/R in a clinical setting.Periodontitis is a common inflammatory disorder affecting the tissues surrounding the teeth, which can lead to the destruction of periodontal tissue and tooth loss. Resveratrol, a natural phytoalexin, exerts multiple biological effects. For example, its anti‑inflammatory activity has been widely studied for the treatment of inflammatory bowel disease for a number of years. However, its effect on bone repair and new bone formation in an inflammatory microenvironment is not well understood. Accordingly, the effect of resveratrol on inflammation‑affected human periodontal ligament stem cells (hPDLSCs) requires further investigation. In the present study, the effect of tumor necrosis factor‑α (TNF‑α), resveratrol, or the combination of both on the osteogenic differentiation of hPDLSCs, as well as the underlying mechanisms involved, were investigated. Cell Counting Kit‑8 assay, alkaline phosphatase staining, Alizarin red staining, Oil Red O staining, reverse transcription‑quantitative PCR and western blotting were used in the present study. It was demonstrated that resveratrol enhanced hPDLSC osteogenesis and reversed the inhibitory effects of TNF‑α on this process. Further mechanistic studies indicated that resveratrol exerted anti‑inflammatory activity by activating the ERK1/2 pathway, decreasing the secretion of interleukin (IL)‑6 and IL‑8 induced by TNF‑α, and enhancing hPDLSCs osteogenesis. The present study suggested that resveratrol may be a novel and promising therapeutic choice for periodontitis.The aim of the present study was to investigate the effect of microRNAs (miRNAs) on the expression level of core1β3‑galactosyltransferase‑specific molecular chaperone (COSMC) in immunoglobulin A nephropathy (IgAN). miRNA expression levels were determined in pediatric patients with IgAN (IgAN group), in patients with other renal diseases (control group) and healthy pediatrics (control group). The target miRNAs of COSMC were investigated in the present study. Western blot analysis was performed to examine the effects of miRNAs on COSMC expression levels. In addition, galactose‑deficient IgA1 (Gd‑IgA1) expression levels were detected following the addition of miRNA‑196b. The present results suggested that the expression levels of 205 miRNAs significantly differed between the IgAN and healthy control groups. The present results also suggested that miRNA‑196b and miRNA‑33a‑3p targeted COSMC, and that miRNA‑196b expression in B lymphocytes was significantly higher in the IgAN group compared with the control group (P less then 0.
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