Acetaminophen (APAP) is the primary cause of drug-induced acute liver failure. Ovarian tumor deubiquitinase 6A (OTUD6A), a recently discovered deubiquitinase of the OTU family, has been primarily studied in tumor contexts. However, its role in APAP-induced liver injury (AILI) remains unclear. Therefore, this study aimed to investigate the involvement of OTUD6A in the pathogenesis of AILI. Our findings demonstrated a substantial upregulation of OTUD6A in both the liver tissue and isolated hepatocytes of mice following APAP stimulation. OTUD6A knockout exacerbated APAP-induced inflammation, hepatocyte necrosis, and liver injury, whereas OTUD6A overexpression alleviated these pathologies. Mechanistically, OTUD6A directly interacted with the enhancer of zeste homolog 2 (EZH2) and selectively removed K48-linked polyubiquitin chains from EZH2, enhancing its stability. This resulted in increased protein levels of EZH2 and H3K27me3, as well as reduced endoplasmic reticulum (ER) stress and cell death in hepatocytes. Collectively, our research uncovers a novel role for OTUD6A in mitigating APAP-induced liver injury by promoting EZH2 stabilization.

Hypertension is the primary disease that endangers human health. A convenient and accurate blood pressure measurement method can help to prevent the hypertension. This paper proposed a continuous blood pressure measurement method based on facial video signal. Firstly, color distortion filtering and independent component analysis were used to extract the video pulse wave of the region of interest in the facial video signal, and the multi-dimensional feature extraction of the pulse wave was preformed based on the time-frequency domain and physiological principles; Secondly, an integrated feature selection method was designed to extract the universal optimal feature subset; After that, we compared the single person blood pressure measurement models established by Elman neural network based on particle swarm optimization, support vector machine (SVM) and deep belief network; Finally, we used SVM algorithm to build a general blood pressure prediction model, which was compared and evaluated with the real blood pressure value. The experimental results showed that the blood pressure measurement results based on facial video were in good agreement with the standard blood pressure values. Comparing the estimated blood pressure from the video with standard blood pressure value, the mean absolute error (MAE) of systolic blood pressure was 4.9 mm Hg with a standard deviation (STD) of 5.9 mm Hg, and the MAE of diastolic blood pressure was 4.6 mm Hg with a STD of 5.0 mm Hg, which met the AAMI standards. The non-contact blood pressure measurement method based on video stream proposed in this paper can be used for blood pressure measurement.
Humans ; Blood Pressure/physiology* ; Blood Pressure Determination/methods* ; Algorithms ; Hypertension/diagnosis* ; Sexually Transmitted Diseases

Objective To explore the application value of minimally invasive surgery in the treatment of lumbar spinal tuberculosis, and to provide reference for clinical treatment of spinal tuberculosis. Methods Data of 252 cases of patients with lumbar spinal tuberculosis treated by conservative treatment in our hospital from January 2005 to December 2014 were retrospectively analyzed. Patients were divided into four groups on the basis of systemic application of antituberculosis chemotherapy. A total of 154 patients were given simple local chemotherapy of percutaneous placement of focus catheter (group A), 48 patients were received percutaneous perfusion drainage and local chemotherapy (group B), 32 patients underwent percutaneous puncture catheter debridement combined with local chemotherapy (group C), and 18 patients were given percutaneous debridement and internal fixation combined with local chemotherapy catheter (group D). Data of erythrocyte sedimentation rate (ESR), visual analogue scale (VAS), Oswestry disability index (ODI) score and the modified MacNab criteria were recorded before operation and at the end of the follow-up in four groups of patients. Results Of the 252 patients, 228 were followed up and 214 patients achieved clinical cure. The lost access were15 cases in group A, 5 cases in group B, 2 cases in group C and 2 cases in group D. The total rate of lost visit was 9.52%. The follow up duration ranged from 25-126 months. The mean duration of follow-up was 68(60, 76) months. A total 214 cases reached the standard of clinical cure. No complications (retrograde infection and cross infection) were found in all patients during treatment. ESR was statistically decreased to (7.26 ± 3.43) mm/1 h at the last follow-up (t=35.06, P=0.023) compared with that (44.96 ± 12.42) mm/1 h before operation. The VAS and ODI were 1.5(1, 3) and 30(25, 35)% at the last follow-up, which were significantly improved than those [7.5(7.0, 8.0) and 60(55, 65)%] before operation (Z=13.641 and 6.806, P<0.05). According to the improved MacNab criteria, the overall excellent and good rates for patients were 86.4%(197/228) at the last follow-up. Conclusion According to the stepped care and personalized treatment, patients of lumbar tuberculosis are preoperative comprehensive evaluated, and most patients can achieve long-term stability and a better clinical efficacy after interventional and minimally invasive treatment.

Objective The aim of this study was to investigate the relationship between phosphotyrosine interac-tion domain containing 1 ( PID1 ) gene and variation in intramuscular fat ( IMF ) content and the possibility to generate transgenic animals by testicular injection .Methods Expression vector pIRES2-acGFP-PID1 carrying pig PID1 gene was incubated with transfection reagents and injected into the testes of male New Zealand rabbits .We examined the F1 genera-tion by fluorescence detection , PCR, Western blotting and measuring the IMF content .The F1 generation gave birth to the F2 generation.Then we examined the F2 generation through detecting the positive rate and the IMF content .Results The exogenous PID1 gene and fluorescent protein gene were expressed at different levels both in the F 1 generation and the F2 generation, and the positive rates were 35.88%and 34.33%, respectively.The IMF content was significantly elevated (P<0.05) in the transgenic positive individuals compared with the negative ones and the control group , and the PID1 protein expression was similarly higher .Conclusions The results of this study demonstrate that PID 1 gene affects intramuscular fat content significantly .Moreover, the results of our analysis provide further evidence that transgenic animals can be gener -ated by testicular injection , and the exogenous gene can be inherited steadily .

Pig copper zinc superoxide dismutase (CuZnSOD) is an important antioxidant enzyme. Some studies focused on the function of CuZnSOD gene, but the transcriptional regulation of the CuZnSOD gene is not yet fully elucidated. Therefore, the aims of the study were to determine the core promoter region and to explore its mechanism of transcriptional regulation. The 853 bp DNA sequence of 5'-flanking promoter was amplified by performing PCR. A series of CuZnSOD promoter fragments with gradually truncated 5'-end were produced by nested PCR and inserted into pGL3-Basic vector. The activities of the promoters were measured by the dual-luciferase assay system after transient transfection into the NIH/3T3 cells. The results demonstrated that there were 2 potential transcription start sites in the regions from initiation codon to -87 bp and -266 bp, respectively. The region from -383 bp to +67 bp in CuZnSOD gene promoter showed higher activity than other regions, and further deletion analysis demonstrated that the region from -75 bp to -32 bp contained an essential promoter sequence for pig CuZnSOD gene transcription. In addition, several potential transcription factor binding sites were predicted with bioinformatics method. These results suggest that these transcription factor binding sites may be involved in the transcriptional regulation of CuZnSOD gene.
Animals ; Cloning, Molecular ; Gene Expression Regulation ; Genetic Vectors ; Mice ; NIH 3T3 Cells ; Promoter Regions, Genetic ; Superoxide Dismutase ; genetics ; Swine ; Transfection