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Purpose Peficitinib is an oral pan-Janus kinase inhibitor for the treatment of rheumatoid arthritis. Co-administration of peficitinib with metformin, a type 2 diabetes therapy, can occur in clinical practice. Hepatic and renal uptake of metformin is mediated by organic cation transporter 1 (OCT1) and OCT2, respectively, and its renal excretion by multidrug and toxin extrusion 1 (MATE1) and MATE2-K. This study investigated the effect of peficitinib on metformin pharmacokinetics in vitro and in healthy volunteers. Methods Inhibitory effects of peficitinib and its metabolite H2 on metformin uptake into human OCT1/2- and MATE1/2-K-expressing cells were assessed in vitro. In an open-label, drug-drug interaction study, 24 healthy volunteers received a single dose of metformin 750 mg on Days 1 and 10, and a single dose of peficitinib 150 mg on Days 3 and 5-11. Blood and urine samples were collected pre-dose on Days 1 and 10, and at intervals ≤ 48 h post-dose. Metformin concentration was determined by liquid chromatography-tandem mass spectrometry and its pharmacokinetic parameters calculated. Results Peficitinib, but not H2, inhibited metformin uptake into OCT1- and MATE1/2-K-expressing cells. Repeated-dose administration of peficitinib reduced metformin area under the concentration-time curve from 0 h extrapolated to infinity (AUCinf) by 17.4%, maximum plasma concentration (Cmax) by 17.0%, and renal clearance (CLR) by 12.9%. Co-administration of peficitinib with metformin was generally well tolerated. Conclusion Slight changes in AUCinf, Cmax and CLR of metformin were observed when co-administered with peficitinib; however, these changes were considered not clinically relevant.Acute myeloid leukemia (AML) is a widely prevalent disease worldwide and poses a large threat to public health. Previous studies have shown that AML is associated with cytogenetic heterogeneity, complex subtypes, and different therapeutic approaches. In this study, we found that miR-486 was upregulated in AML using both The Cancer Genome Atlas (TCGA) database and patient tissues. After knockdown of miR-486 by short hairpin RNA (shRNA), we discovered that miR-486 was required for cell proliferation. Through miRNA profile analysis and a dual-luciferase reporter assay, suppressor of cytokine signaling 2 (SOCS2) was identified as a direct target of miR-486. Therefore, by silencing SOCS2, a negative regulator of the Janus kinase (JAK)-signal transducer and activator of transcription (STAT) pathway, miR-486 enhanced JAK-STAT3 activity and promoted cell proliferation. The miR-486-SOCS2-STAT3 proliferation axis is therefore involved in the pathogenesis of AML, providing a novel molecular mechanism and diagnostic and therapeutic clues for AML.The present study was designed to report the synthesis and characterization of copper ferrite nanoparticles (CF NPs) and their biocompatibility in Wistar rats. Coprecipitation method was used to generate CF NPs having average diameter of 14.06 nm. NPs were characterized by scanning electron microscopy and X-ray diffraction. Six-week-old Wistar rats of both sexes intraperitoneally received 10 mg/ml saline/Kg body weight of CF NPs for 14 days. Control groups were maintained in parallel that received saline solution for 14 days through same route. Open field and novel object recognition tests, complete blood count, selected plasma parameters, antioxidants, and copper concentration in vital organs were determined in all treatments. Female rats treated with CF NPs had significantly higher platelet count (P = 0.05) and platelet crit (P = 0.05) and decreased plasma triglyceride concentration levels (P = 0.02) than control group. Female rats had significantly increased levels of superoxide dismutase (P = 0.01), catalase (P = 0.05), and malonaldehyde (P = 0.05) in the kidney, while male rats had significantly elevated levels of superoxide dismutase in the lungs (P = 0.01) as compared with respective control groups. Copper concentrations in the liver were significantly higher in both female (P = 0.04) and male (P = 0.05) rats exposed to CF NPs than control group. All other studied parameters of behavioral tests, blood biochemistry, antioxidant, and copper concentrations in the brain varied nonsignificantly (P > 0.05) when compared between CF NPs treated and untreated rats of both sexes. https://www.selleckchem.com/products/Bortezomib.html Intraperitoneal supplementation of CF NPs for 14 days disturbed the platelet count, plasma triglyceride concentration, copper levels in the liver, and antioxidant concentrations in the kidney of female Wistar rats. These parameters remained unaffected in male subjects.Background The structured diagnosis of chest radiographs is an important basic competence in radiology and will be required in the student teaching with the implementation of the National Competency-Based Learning Catalog Medicine (NKLM) in Germany. Aim The aim was to evaluate the extent to which second-year students gain confidence in the diagnosis of chest radiographs through a new curricular training for the diagnosis of chest radiographs with subsequent objective structured clinical examination (OSCE) and how confident they feel about meeting the expectations of the supervising medical colleagues during the clinical clerkship. Methods The training included four lectures and ten commented instructional films on the diagnosis of radiographs. Two years later, the students were asked how often and in what form they had contact with chest radiographs in their clinical clerkship. They were also asked how confident they felt in dealing in different areas. The students with training were also asked to what extent the lectures and the instructional films were helpful. The results of students in the last year without and the first year with training and OSCE were compared using the Mann-Whitney U test for independent samples. Results The frequency of dealing with chest radiographs was comparably high among students with and without training. The students with training and OSCE felt more confident and better prepared in dealing with chest radiographs than the students without training (varying between p less then 0.001 and p = 0.148). They rated the educational films as more helpful than the lectures (mean 2.85 ± 0.76 vs. 3.41 ± 0.68 on a four-point scale). Discussion With early training, students' confidence in dealing with chest radiographs can be sustainably increased.
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