BACKGROUND:The pathogenesis of autoimmune hepatitis has not been clearly elucidated.Circular RNA(CircRNA)is a research hotspot in the field of RNA and is involved in the pathogenesis of many autoimmune diseases.However,the role of CircRNA in autoimmune hepatitis remains unclear. OBJECTIVE:To investigate the relationship between CircRNA(CircRNA)and concanavalin A induced liver injury in mice with autoimmune hepatitis. METHODS:Bioinformatics analysis was performed on CircRNA profiles selected by previous microarray technology,including gene ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)enrichment analyses,so as to explore the potential biological functions of these differentially expressed genes.Twelve C57BL/6 mice were randomized into normal group and model group(n=6 per group).Autoimmune hepatitis model was established by tail vein injection of concanavalin A in the model group.Mice were killed at 12 hours after modeling to extract mouse liver and peripheral blood.The expression levels of CircRNAs were verified by qRT-PCR.Serum alanine aminotransferase and aspartate aminotransferase levels were detected by colorimetric method.The levels of oxidative stress indexes malondialdehyde and nitric oxide in mouse liver were detected by microplate method.The correlation between oxidative stress level and liver injury index was analyzed. RESULTS AND CONCLUSION:The results of GO analysis showed that the target genes with up-regulated CircRNAs expression were mainly involved in the biological processes of SNARE complex assembly regulation(P=0.004),their molecular functions were mainly metal ion binding(P=0.000 29),and the cell components were mainly enriched in CORVET complex(P=0.075).The biological processes involved in the down-regulated circRNAs target genes were mainly"negative regulation of pancreatic secretion"(P=0.000 42),the molecular functions were mainly"transcriptional activator activity"(P=0.025),and the cell components were mainly enriched in"extracellular components"(P=0.006).KEGG results showed that the target genes with up-regulated CircRNAs expression were mainly enriched in the"base excision-repair"signaling pathways(P=0.026).Compared with the normal group,serum alanine aminotransferase and aspartate aminotransferase levels and the levels of malondialdehyde and nitric oxide in mouse liver in the model group were significantly increased(P＜0.01).Compared with the normal group,the expression of two selected CircRNAs(mmu-circ-0001520 and mmu-circ-0001577)was increased in the model group(P＜0.05).Spearman correlation analysis showed that the expression of mmu-circ-0001520 and mmu-circ-0001577 was positively correlated with alanine aminotransferase,aspartate aminotransferase,malondialdehyde and nitric oxide.To conclude,the differential expression of CircRNAs is correlated with liver injury in autoimmune hepatitis mice.mmu-circ-0001520 and mmu-circ-0001577 are expected to be diagnostic biomarkers and therapeutic targets for autoimmune hepatitis.

A non-invasive deep learning method is proposed for reconstructing arterial blood pressure signals from photoplethysmography signals.The method employs U-Net as a feature extractor,and a module referred to as bidirectional temporal processor is designed to extract time-dependent information on an individual model basis.The bidirectional temporal processor module utilizes a BiLSTM network to effectively analyze time series data in both forward and backward directions.Furthermore,a deep supervision approach which involves training the model to focus on various aspects of data features is adopted to enhance the accuracy of the predicted waveforms.The differences between actual and predicted values are 2.89±2.43,1.55±1.79 and 1.52±1.47 mmHg on systolic blood pressure,diastolic blood pressure and mean arterial pressure,respectively,suggesting the superiority of the proposed method over the existing techniques,and demonstrating its application potential.

Objectives:To investigate the outcomes of cochlear implantation in Mandarin-speaking cochlear implant (CI) users with single-sided deafness (SSD).Methods:This study was a single-center prospective cohort study. Eleven Mandarin-speaking adult SSD patients who underwent CI implantation at Capital Medical University Beijing Tongren Hospital from August 2020 to October 2021 were recruited, including 6 males and 5 females, with the age ranging from 24 to 50 years old. In a sound field with 7 loudspeakers distributed at 180°, we measured root-mean-square error(RMSE)in SSD patients at the preoperative, 1-month, 3-month, 6-month, and 12-month after switch-on to assess the improvement of sound source localization. The Mandarin Speech Perception (MSP) was used in the sound field to test the speech reception threshold (SRT) of SSD patients under different signal-to-noise locations in a steady-state noise under conditions of CI off and CI on, to reflect the head shadow effect(S SSDN NH), binaural summation effect(S 0N 0) and squelch effect(S 0N SSD). The Tinnitus Handicap Inventory (THI) and the Visual Analogue Scale (VAS) were used to assess changes in tinnitus severity and tinnitus loudness in SSD patients at each time point. The Speech, Spatial and Qualities of Hearing Scale(SSQ) and the Nijmegen Cochlear Implantation Scale (NCIQ) were used to assess the subjective benefits of spatial speech perception and quality of life in SSD patients after cochlear implantation. SPSS 19.0 software was used for statistical analysis. Results:SSD patients showed a significant improvement in the poorer ear in hearing thresholds with CI-on compared with CI-off; The ability to localize the sound source was significantly improved, with statistically significant differences in RMSE at each follow-up time compared with the preoperative period ( P<0.05). In the S SSDN NH condition, which reflects the head shadow effect, the SRT in binaural hearing was significantly improved by 6.5 dB compared with unaided condition, and the difference was statistically significant ( t=6.25, P=0.001). However, there was no significant improvement in SRT between the binaural hearing condition and unaided conditions in the S 0N 0 and S 0N SSD conditions ( P>0.05). The total score of THI and three dimensions were significant decreased ( P<0.05). Tinnitus VAS scores were significantly lower in binaural hearing compared to the unaided condition ( P<0.001). The total score of SSQ, and the scores of speech and spatial dimensions were significant improved in binaural hearing compared to the unaided condition ( P<0.001). There was no statistical difference in NCIQ questionnaire scores between preoperative and postoperative ( P>0.05), and only the self-efficacy subscore showed a significant increase( Z=-2.497, P=0.013). Conclusion:CI could help Mandarin-speaking SSD patients restore binaural hearing to some extent, improve sound localization and speech recognition in noise. In addition, CI in SSD patients could suppress tinnitus, reduce the loudness of tinnitus, and improve subjective perceptions of spatial hearing and quality of life.

A blood pressure measurement system based on internet of things and deep learning is proposed for continuous data acquisition and blood pressure prediction.The system adopts a hybrid neural network structure for processing the collected data and accurately predicting blood pressure,and the model consists of ResNet18,GRU and 3 fully connected layers.The data of 82 individuals are collected for training and testing.The mean absolute errors and standard deviations are 2.16 mmHg and 3.09 mmHg for diastolic blood pressure,3.15 mmHg and 5.14 mmHg for systolic blood pressure,according with AAMI standard and BHS standard.

Objective:To investigate the value of conbercept in experimental corneal nevascularization (CNV) and lymphangiogenesis in rabbit model.Methods:Forty-four adult New Zealand rabbits were randomly divided into a conbercept injected group (9 rabbits), a ranibizumab injected group (9 rabbits), a normal saline control group (9 rabbits), a model control group (9 rabbits) and a normal control group (8 rabbits) by random number table method, take the left eyes as the experimental eye.Whatman filter papers (8 mm in diameter) were soaked in 1 mol/L NaOH solution and then applied on the middle surface of the cornea for 30 seconds.On day 1st after alkali burning, the eyes in the conbercept injected group were treated with 0.1 ml/1 mg of conbercept, the eyes in the ranibizumab injected group were treated with 0.1 ml/1 mg of ranibizumab, the eyes in the normal saline control group were treated with 0.1 ml 0.9% NaCl, the eyes in the model control group just received alkali burning, and the eyes in the normal control group received neither alkali burns nor subconjunctival injection any drugs.All rabbits were monitored daily after alkali burning.Digital pictures were taken on day 4th, 7th, 14th and 21th after modeling.Image analysis was performed on the area of neovascularization, a ascertain number of rabbits were killed respectively.Aqueous humor was collected for the concentration of vascular endothelial growth factor (VEGF) assay.Corneal specimens were analyzed by histopathologically and immunohistochemical staining of lymphatic endothelial cells hyaluronic acid receptor 1(LYVE-1). The use and care of the animals complied with the Statement of the Association for Research in Vision and Ophthalmology (ARVO).Results:On the 4th day after alkali burning, the neovascularization buds grew into the edge of the cornea in the conbercept injected group, the ranibizumab injected group, the normal saline control group and the model control group, and the corneal edema decreased.On day 7th, the neovascularization of the conbercept injected group and the ranibizumab injected group was less than that of the normal saline control group and the model control group; On day 4th after alkali burning, corneal epithelial cells were increased, vacuoles were found in the epithelium, a large number of inflammatory cells were found in the matrix, and small vascular lumens were seen below the epithelium.On day 7th after modeling, neovascularization infiltrated the shallow matrix with a large number of inflammatory cells.Surface areas of induced CNV in conbercept injected group were (15.20±9.16)mm 2, which were significantly less than those in ranibizumab injected group ([28.21±5.17]mm 2) on day 14th ( P<0.05). The concentration of VEGF in the conbercept injected group was (7.75±6.56)pg/ml, which was significantly lower than that in the ranibizumab injected group ([16.98±2.17]pg/ml on day 14th ( P<0.05). The normal control group had no lymphatic growth in the corneal tissue and no LYVE-1 positive particles.On day 4th after the alkil burning, corneal lymphatic vessels appeared in the corneal tissue of the conbercept injected group, the ranibizumab injected group, the normal saline control group and the model control group, which grew in parallel with the neovascularization.Lymphatic vessels counting in the conbercept injected group and ranibizumab injected group were 4.33±0.58 and 4.67±0.58 on day 7th and 14th, which were reduced significantly compared with normal saline control group (10.67±0.58) and the model control group (12.33±0.58) (all at P<0.05). Conclusions:Early subconjunctival administration of conbercept may successfully inhibit alkali-induced corneal neovascularization and corneal lymphangiogenesis in alkali burning animal model.The inhibit effect is related with the reduces of VEGF levels.

Objective:To introduce the local human body metabolic rate measurement system based on the Smartphone with the Android operating system and realizes the transmission of physiological data from the detecting module to Smartphone. Methods:Embedding Bluetooth module in the module of detecting physiological parameters, the measurement target is fingers, so the detected physiological data can be sent to Smartphone with Android system. By develop apk application program, the Smartphone can realize the operation of opening the Bluetooth devices and searching the around Bluetooth devices, to realize the data transmission by the Socket connection, we develop the software which realizes showing data. Results:The Smartphone received the metabolic rate parameters from Bluetooth, and show the result on the surface. A study of the technology of transmitting physiological parameters information through the interface of Bluetooth in Android Smartphone is made in this paper. Conclusion:The paper is based on the Mobile Medicine Measuring System, realizes the technology of physiological parameters transmission through Bluetooth in Android system, which has a great broad application.

OBJECTIVETo compare the efficacy and toxicity of the chemotherapeutic regimen containing pirarubicin and mitoxantrone on the treatment of relapsed or refractory acute myeloid leukemia (AML) in adults.

METHODSIn this open prospective multicentre study, we randomly assigned patients with relapsed or refractory AML to receive TAE regimen (pirarubicin+cytarabine+etoposide) versus MAE regimen (mitoxantrone + cytarabine + etoposide). The efficacy and toxicity were compared between the two groups.

RESULTS56 patients entered this clinical trial. The complete remission (CR) rate on TAE arm was 79.0% versus 55.6% on MAE arm with the overall response (OR) rates of 86.8% versus 88.9%, respectively. The CR was higher on TAE arm (P=0.035) but with no significant difference between the two groups regarding the overall response (OR) rate. The regimens were well tolerated in both groups. Hematologic and non-hematologic toxicity were similar except relatively lower the mean dosage of G-CSF, red blood cells and platelets transfusion on TAE arm. No significant differences were seen between the two groups regarding the overall survival and relapse free survival rates.

CONCLUSIONTAE regimen might be an effective salvage therapy in patients with relapsed or refractory AML.

Adult ; Antineoplastic Combined Chemotherapy Protocols ; administration & dosage ; therapeutic use ; Dactinomycin ; administration & dosage ; Doxorubicin ; administration & dosage ; analogs & derivatives ; Etoposide ; administration & dosage ; Granulocyte Colony-Stimulating Factor ; administration & dosage ; Humans ; Leukemia, Myeloid, Acute ; drug therapy ; Methotrexate ; administration & dosage ; Prospective Studies ; Recurrence ; Remission Induction

Lung cancer is the most common tumor and one of the malignant tumors with the lowest livability after diagnosis, as is known so far. Large-scale image database is the foundation of developing computer-aided diagnosis methods, education and training in lung cancer diagnosis to improve medical diagnostic efficiency and to reduce the doctors' burden. In this study, aiming at improving the low data storage efficiency and solving the lacking of tool for data visualization and data retrieval existing in the use of traditional Lung Image Database Consortium (LIDC) from the lung cancer database, we developed a new lung cancer image database platform including an improved data model, a data integration tool, an image and annotation visualization tool and a data retrieving component. Firstly, the data format in LIDC was analyzed and an improved information model was provided to manage and manipulate large amount data stored in it. Next, some tools such as data integration component, DICOM, image and annotation visualization tool, and data query were designed and implemented. The study demonstrated that the lung cancer image database platform had the capacity of data collection, visualization, and query, and could promote diagnose lung cancer research.
Algorithms ; Databases, Factual ; Diagnosis, Computer-Assisted ; Humans ; Information Storage and Retrieval ; methods ; Lung Neoplasms ; diagnostic imaging ; pathology ; Radiographic Image Interpretation, Computer-Assisted ; methods ; Tomography, X-Ray Computed ; methods ; standards

Ultrasound based tissue thermal lesion non-invasive detection is of great significance in high intensity focused ultrasound (HIFU) clinical application. In this paper, we propose a sub-pixel method to quantify the ultrasound image change caused by HIFU as correlation-distance. The support vector machine (SVM) was trained by using correlation distance as samples, and the recognition effect was tested. Results showed that sub-pixel cross-correlation vector field could reflect the ablation lesions position. SVM based classification method can recognize HIFU beam lesion degree effectively.
Algorithms ; Diagnostic Imaging ; methods ; High-Intensity Focused Ultrasound Ablation ; adverse effects ; Humans ; Pattern Recognition, Automated ; methods ; Support Vector Machine