Regulatory role of microRNA-320 during off-pump coronary artery bypass grafting with dexmedetomidine adjunct anesthesia

xlomafota13 shared this article with you from Inoreader Regulatory role of microRNA-320 during off-pump coronary artery bypass grafting with dexmedetomidine adjunct anesthesia Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1201. doi: 10.3892/etm.2021.10635. Epub 2021 Aug 23. ABSTRACT The present study investigated the effects of dexmedetomidine on the expression level of microRNA-320 (miR-320) and neuroglobin (NGB) in patients undergoing off-pump coronary artery bypass grafting (OPCABG). A total of 40 patients undergoing OPCABG were recruited and randomly divided into the dexmedetomidine and normal saline groups (treated before anesthesia), respectively. The NGB levels in the blood samples before and after surgery were analyzed and compared. The CATH.a cells were cultured and induced with dexmedetomidine, and the NGB expression level was detected. CATH.a cells were treated with NGB and lipopolysaccharide (LPS), and the cell survival rate was determined. The miR-320 expression levels in the blood samples and dexmedetomidine-induced cells were detected. Dual-luciferase reporter assay was performed. Compared with control subject s, patients in the dexmedetomidine group had higher NGB levels in the blood. In the CATH.a cells, the dexmedetomidine treatment upregulated the NGB levels. Moreover, upon pre-incubation with NGB and LPS stimulation, dexmedetomidine elevated cell viability. Furthermore, miR-320 expression levels were significantly downregulated in the blood of patients in the dexmedetomidine group, as well as in the dexmedetomidine-induced cells. Dual-luciferase reporter assay confirmed that miRNA-320a directly targeted on NGB, and upregulated miRNA-320a in CATH.a cells decreased cell proliferation activity. Pre-administration of dexmedetomidine can decrease miR-320 expression level in the blood of patients undergoing OPCABG, stimulating the high expression of NGB and increasing the proliferation activity of neuronal cells, which may decrease the postoperative cognitive impairment. PMID:34584546 | PMC:PMC8422394 | DOI:10.3892/etm.2021.10635 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

HBxAg promotes HBV replication and EGFR activation in human placental trophoblasts

xlomafota13 shared this article with you from Inoreader HBxAg promotes HBV replication and EGFR activation in human placental trophoblasts Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1211. doi: 10.3892/etm.2021.10645. Epub 2021 Aug 24. ABSTRACT Hepatitis B virus (HBV) infection is a global epidemic. The main transmission route of chronic HBV infection is from mother to child, yet the mechanisms underlying HBV intrauterine infection remain unclear. In the present study, the effect and the mechanism underlying hepatitis B virus X antigen (HBxAg) on HBV replication and EGFR activation in trophoblasts was investigated. Serum samples from pregnant women with HBV infection were used to infect trophoblasts and HBxAg expression was detected using ELISA. HBV plasmids carrying either full length hepatitis B virus X (HBx) or HBx with a deletion mutation (ΔHBx) were transfected into trophoblasts and expression levels of HBV DNA, hepatitis B e-antigen and pregenomic (pg)RNA, and structural maintenance of chromosomes (Smc) 5/6 were assessed. The association between HBx and EGFR promoters was charact erized using a luciferase reporter assay and EGFR/PI3K/phosphorylated (p)-AKT expression and apoptosis rate were also monitored. The results of the present study indicated that HBxAg expression increased with the increasing titre of HBV DNA (P<0.05). Compared with the wild-type group, the amount of HBV DNA in the supernatant and cells was significantly reduced (P<0.05) in the ΔHBx group and the intracellular HBeAg and pgRNA levels were also significantly decreased (P<0.05). In addition, Smc5/6 expression was also significantly decreased (P<0.05) when the intracellular HBx protein was expressed compared with mock-transfected cells. Co-transfection of HBx and EGFR promoter plasmids in JEG-3 and HTR-8 cells significantly elevated EGFR promoter driven luciferase expression relative to the control group (P<0.01). In EGFR overexpressing cells, the expression of PI3K/p-AKT was significantly increased, whereas the apoptosis rate was significantly decreased (P<0.05). These results were reversed in the EGFR-knockdown group. In conclusion, the present study demonstrated that HBx promotes HBV replication in trophoblasts via downregulation of Smc5/6, activates the EGFR promoter and inhibits trophoblast apoptosis via the PI3K/p-AKT downstream signalling pathway, thereby increasing the risk of HBV intrauterine infection. PMID:34584556 | PMC:PMC8422389 | DOI:10.3892/etm.2021.10645 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Podofilox suppresses gastric cancer cell proliferation by regulating cell cycle arrest and the c-Myc/ATG10 axis

xlomafota13 shared this article with you from Inoreader Podofilox suppresses gastric cancer cell proliferation by regulating cell cycle arrest and the c-Myc/ATG10 axis Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1203. doi: 10.3892/etm.2021.10637. Epub 2021 Aug 23. ABSTRACT Gastric cancer (GC) is a malignancy for which effective therapeutic drugs are limited. Podofilox exhibits antitumor effects in various types of cancer; however, whether it may inhibit GC growth remains unknown. The aim of the present study was to investigate the role of podofilox in GC. Cell Counting Kit-8, colony formation and cell cycle assays were used to detect the role of podofilox on cellular proliferation and the cell cycle, respectively. A microarray was used to detect the transcriptional changes induced by podofilox in GC cells. The results of the present study demonstrated that podofilox inhibited GC cell proliferation and colony formation. The half maximal inhibitory concentration of podofilox in AGS and HGC-27 cells was 2.327 and 1.981 nM, respectively. In addition, treatment with podofilox induced G0/G1 cell cyc le arrest. Molecular analysis based on microarray data demonstrated that podofilox altered the expression levels of genes involved in the cell cycle, c-Myc and p53 signaling. Autophagy-related 10 (ATG10), which was highly expressed in GC tissues, was also downregulated by podofilox, as demonstrated by the results of the microarray analysis and immunoblotting. To determine the involvement of ATG10 in GC, ATG10 was knocked down in GC cells by small interfering RNA, which suppressed the proliferation and colony formation of GC cells compared with those observed in the control-transfected cells. Taken together, the results of the present study suggested that podofilox may inhibit GC cell proliferation by preventing the cell cycle progression and regulating the c-Myc/ATG10 signaling pathway. PMID:34584548 | PMC:PMC8422391 | DOI:10.3892/etm.2021.10637 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Ononin alleviates H2O2-induced cardiomyocyte apoptosis and improves cardiac function by activating the AMPK/mTOR/autophagy pathway

xlomafota13 shared this article with you from Inoreader Ononin alleviates H<sub>2</sub>O<sub>2</sub>-induced cardiomyocyte apoptosis and improves cardiac function by activating the AMPK/mTOR/autophagy pathway Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1307. doi: 10.3892/etm.2021.10742. Epub 2021 Sep 16. ABSTRACT Ononin (ON) is an isoflavone with numerous reported bioactivities, including anti-oxidative, anti-inflammatory and neuroprotective effects. Autophagy is a critical homeostatic process in the body that has been reported to closely associate with the apoptotic processes of cardiomyocytes. Using flow cytometry, western blotting, echocardiography and Masson's staining, the present study investigated the effects of ON on H2O2-induced cardiomyocyte apoptosis and myocardial infarction, in addition to any potential underlying molecular mechanisms. H2O2 treatment reliably induced apoptosis in H9C2 cells. The anti-apoptotic effects of ON were revealed by flow cytometry results and by the downregulation of cleaved-caspase 3. Further investigations indicated that ON may alleviate apoptosis by enhancing autophagy, a s evidenced by increased microtubule-associated proteins 1A/1B light chain 3B expression and p62 degradation. Activation of the 5' AMP-activated protein kinase (AMPK)/mTOR pathway was observed after ON administration following H2O2-induced cardiomyocyte injury. However, these anti-apoptotic effects mediated by ON were lost after autophagy inhibition by chloroquine or AMPK inhibition by Compound C. Finally, the protective effects of ON on cardiomyocytes in vitro could also be observed in vivo. A myocardial infarction model was established by ligating the left anterior descending branch of the rat heart. Using echocardiography and Masson's staining, ON was shown to increase the ejection fraction and decrease cardiac fibrosis in rats with myocardial infarction. These results suggest that ON exerts cardioprotective effects by improving autophagy via the AMPK/mTOR signaling pathway. PMID:34584565 | PMC:PMC8461629 | DOI:10.3892/etm.2021.10742 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Impact of COVID-19 prevention measures on Clostridioides difficile infections in a regional acute care hospital

xlomafota13 shared this article with you from Inoreader Impact of COVID-19 prevention measures on <em>Clostridioides difficile</em> infections in a regional acute care hospital Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1215. doi: 10.3892/etm.2021.10649. Epub 2021 Aug 26. ABSTRACT Clostridioides difficile (C. difficile) is a common cause of nosocomial diarrhea. The multi-modal infection control strategies designed to contain the COVID-19 pandemic have had an unintended positive effect on other hospital-acquired infections. The aim of the present study was to analyze the impact of the COVID-19 prevention measures on healthcare-associated C. difficile infections in a large regional acute care center. Electronic databases were reviewed from the start of the pandemic (March) up to November 2020. Average values from the same months from 2019 and 2018 were used as controls. Using the ICD-10 discharge coding, 65 C. difficile cases per 25,124 patients were identified in 2020 compared to 151/43,126 from the 2018 and 2019 averages (P=0.0484). The C. difficile cases were found to be decreased after the implementation of COVID-19 infection control strategies compared to previous years, despite an increase in antibiotic use. Subset analysis during lockdown showed a clear decrease but the difference was not statistically significant. For the months of recovery after lockdown, the number of cases was comparable to previous years. PMID:34584560 | PMC:PMC8422384 | DOI:10.3892/etm.2021.10649 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

CXCR4 protects bone marrow-derived endothelial progenitor cells against hypoxia through the PI3K/Akt signaling pathway

xlomafota13 shared this article with you from Inoreader CXCR4 protects bone marrow-derived endothelial progenitor cells against hypoxia through the PI3K/Akt signaling pathway Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1200. doi: 10.3892/etm.2021.10634. Epub 2021 Aug 23. ABSTRACT The present study aimed to investigate the regulatory mechanism of chemokine (C-X-C motif) receptor 4 (CXCR4) on endothelial progenitor cells (EPCs) through the phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) signaling pathway under hypoxic conditions. Mononuclear cells were isolated from the bone marrow (BM) of young Sprague-Dawley (SD) rats. Bone marrow-derived endothelial progenitor cells (BM-EPCs) were characterized by using Dil-labeled acetylated low-density lipoprotein (Dil-ac-LDL) and fluorescein isothiocyanate-labeled UEA (FITC-UEA-1). Phenotype identification of BM-EPCs was based on red cytoplasm and green cytomembrane. Flow cytometry was employed to examine the markers CD14, CD34, and KDR. Expression level of the EPC-specific surface marker CD14 was found to be negative, while the expression level of CD34 and KDR was positive. In addition, CXCR4 was stably overexpressed in BM-EPCs after transfection with adenovirus-CXCR4. Cell proliferation, migration and apoptosis abilities were measured through the application of CCK-8, followed by Transwell and flow cytometry assays. The expression level of CXCR4, PI3K and Akt was determined by reverse transcription-quantitative PCR and western blotting assays. Functional experiments demonstrated that hypoxia inhibited BM-EPC proliferation and migration, while accelerating BM-EPC apoptosis. Additionally, CXCR4 was found to promote proliferation and migration, and suppress apoptosis in BM-EPCs with or without hypoxia treatment. Evidence also demonstrated that CXCR4 markedly upregulated the expression levels of PI3K and Akt. Furthermore, PI3K inhibitor (LY294002) and CXCR4 inhibitor (AMD3100) effectively inhibited the proliferation, migration and resistance to apoptosis of CXCR4-mediated BM-EPCs under hypoxic conditions. PMID:34584545 | PMC:PMC8422402 | DOI:10.3892/etm.2021.10634 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Gain of TPPP as a predictor of progression in patients with bladder cancer

xlomafota13 shared this article with you from Inoreader Gain of TPPP as a predictor of progression in patients with bladder cancer Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1204. doi: 10.3892/etm.2021.10638. Epub 2021 Aug 24. ABSTRACT The present study investigated the role of tubulin polymerization promoting protein (TPPP) in the regulation of bladder cancer (BC) cell proliferation and migration, in addition to the association between TPPP gene copy number amplification and clinicopathological characteristics of BC. TPPP gene amplification was measured in human BC epithelial cells and samples obtained from 52 patients with BC via fluorescence in situ hybridization. TPPP gain was defined as mean TPPP copy number >2.2 per nucleus (cutoff). The neutrophil-to-lymphocyte ratio (NLR) was also obtained from the preoperative data of the patients. For in vitro assays, BC cell lines were transfected with either TPPP small interfering RNAs or scrambled control, following which cell proliferation and migration were determined using Cell Counting Kit-8 and Transwell migra tion assays, respectively. The percentage of cells with TPPP copy number amplification in the four BC epithelial cell lines (MGH-U1, -U1R, -U3, -U4) examined (86.0-100.0%) was found to be higher compared with that in the normal human uroepithelial cell lines (3.0 and 9.0%). Patients were divided into one- (1.9%), two- (55.8%), three- (7.7%), four- (26.9%) and five-copy (7.7%) types. Results calculated using Fisher's exact test indicated that the gain of TPPP in patients with BC associated significantly with age (P<0.05), advanced histological grade (P<0.001), tumor stage (P<0.05), histological type (P<0.001) and NLR (P<0.05). In MGH-U1R and MGH-U4 cells, cell proliferation and migration were revealed to be significantly lower following TPPP knockdown compared with those in cells transfected with the scrambled control. In conclusion, findings from the present study suggest that TPPP is important for cell proliferation, cell migration and BC progression, such that TPPP copy number assessment would be advised for preoperative urine cytology for urothelial neoplasia diagnosis. PMID:34584549 | PMC:PMC8422379 | DOI:10.3892/etm.2021.10638 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Gain of TPPP as a predictor of progression in patients with bladder cancer

xlomafota13 shared this article with you from Inoreader Gain of TPPP as a predictor of progression in patients with bladder cancer Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1204. doi: 10.3892/etm.2021.10638. Epub 2021 Aug 24. ABSTRACT The present study investigated the role of tubulin polymerization promoting protein (TPPP) in the regulation of bladder cancer (BC) cell proliferation and migration, in addition to the association between TPPP gene copy number amplification and clinicopathological characteristics of BC. TPPP gene amplification was measured in human BC epithelial cells and samples obtained from 52 patients with BC via fluorescence in situ hybridization. TPPP gain was defined as mean TPPP copy number >2.2 per nucleus (cutoff). The neutrophil-to-lymphocyte ratio (NLR) was also obtained from the preoperative data of the patients. For in vitro assays, BC cell lines were transfected with either TPPP small interfering RNAs or scrambled control, following which cell proliferation and migration were determined using Cell Counting Kit-8 and Transwell migra tion assays, respectively. The percentage of cells with TPPP copy number amplification in the four BC epithelial cell lines (MGH-U1, -U1R, -U3, -U4) examined (86.0-100.0%) was found to be higher compared with that in the normal human uroepithelial cell lines (3.0 and 9.0%). Patients were divided into one- (1.9%), two- (55.8%), three- (7.7%), four- (26.9%) and five-copy (7.7%) types. Results calculated using Fisher's exact test indicated that the gain of TPPP in patients with BC associated significantly with age (P<0.05), advanced histological grade (P<0.001), tumor stage (P<0.05), histological type (P<0.001) and NLR (P<0.05). In MGH-U1R and MGH-U4 cells, cell proliferation and migration were revealed to be significantly lower following TPPP knockdown compared with those in cells transfected with the scrambled control. In conclusion, findings from the present study suggest that TPPP is important for cell proliferation, cell migration and BC progression, such that TPPP copy number assessment would be advised for preoperative urine cytology for urothelial neoplasia diagnosis. PMID:34584549 | PMC:PMC8422379 | DOI:10.3892/etm.2021.10638 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Ovarian cancer health politics in Romania and Germany: A comparative study

xlomafota13 shared this article with you from Inoreader Ovarian cancer health politics in Romania and Germany: A comparative study Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1217. doi: 10.3892/etm.2021.10651. Epub 2021 Aug 26. ABSTRACT Ovarian cancer is known to have a poor prognosis, being the 7th most common cancer type in women with regard to incidence and mortality worldwide. The present study underlines the importance of early diagnosis and prevention management of ovarian cancer. This study is a hospital-based case-control study that was conducted at the same time in two similar hospitals from different countries, Romania and Germany, over three years. The results showed that significant differences were identified for the two groups with regards to the age factor (P<0.001). A risk analysis was performed to determine whether the patients from Romania were exposed to a risk factor. The risk of developing deadly diseases was deemed much higher owing to insufficient protocols or informative programs in Romania. The medical information, early diagnosis and standardized the rapy with optimum treatment based on health policy and health care systems, play a key role concerning the management and prognosis of ovarian cancer which are different from country to country. PMID:34584562 | PMC:PMC8422388 | DOI:10.3892/etm.2021.10651 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

MicroRNA-22 inhibits cell growth and metastasis in breast cancer via targeting of SIRT1

xlomafota13 shared this article with you from Inoreader MicroRNA-22 inhibits cell growth and metastasis in breast cancer via targeting of SIRT1 Via Experimental and therapeutic medicine Exp Ther Med. 2021 Nov;22(5):1194. doi: 10.3892/etm.2021.10628. Epub 2021 Aug 19. ABSTRACT [This retracts the article DOI: 10.3892/etm.2017.4590.]. PMID:34584539 | PMC:PMC8422378 | DOI:10.3892/etm.2021.10628 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.