A number of institutional repositories were selected from Open DOAR and their website accessibility, linking time, linking effect and pressure were tested with evaluation tools.The accessibility of institutional repositories in China and its major problems were analyzed with certain suggestions proposed for improving their accessibility.

The course evaluation scheme oriented ability cultivation was established. The for-mative evaluation indexes which were practiced in information retrieval course were divided into two indicators:classroom learning and performance including five secondary indexes(classroom discipline, classroom learning, homework, questions and answer questions online, personal essay and group dis-cussion reports) with the and seven observation points(pre-class preparation, teacher-student interac-tions, classroom discussions and classroom reports, experimental class performance, homework com-pletion, the utilization of network teaching platform, personal essay and group discussion), and these were practiced in the teaching of “information retrieval” curriculum, the usual results was composed with the usual academic performance and utilization of the network teaching platform. Finally, the practice results were discussed and summarized in order to cultivate the ability of the students who major in information management and to improve the teaching quality.

Objective To evaluate the diagnostic value of gray-scale ultrasonography (GSU) combined with contrast-enhanced ultrasonography (CEUS) and real-time elastography imaging (EI) in solid thyroid nodules.Methods A total of 124 solid nodules were collected from Xuanwu Hospital of Capital Medical University from September 2011 to November 2014, including 49 benign nodules and 75 malignant nodules conifrmed by surgical pathology. The data of multimodal imaging were retrospectively analyzed and compared with the pathological results. The parameters among the groups were compared byχ2 test. Four diagnostic models including the statistically signiifcant independent variables were established accord to different combinations of routine ultrasound examination. The binary Logistic regression equation using the pathological results as the dependent variable Y and the ultrasound features of thyroid nodules as independent variableX was established for calculating the area under the receiver operator curve (ROC) and multiple regression analysis furthermore.Results There were statistically significant differences in aspect ratio, margin condition, echo type, CEUS features, elastic imaging score and elastic strain rate of benign and malignant thyroid nodules(χ2=13.966, 7.106, 24.215, 17.250 and 27.158,P<0.05).The four Logistic regression models were statistically signiifcant (χ2=5.37, 5.37, 8.155, 8.155, allP<0.05). By using modelⅠ,Ⅱ,Ⅲ andⅣ, the diagnostic sensitivity, speciifcity and accuracy of malignant nodules were (73.8%, 75.9%, 79.7%, 83.3%), (67.5%, 70.7%, 85.2%, 86.7%), and (71.8%, 74.2% 81.8%, 84.4%) respectively. The area under the ROC of logistic equation predicted values were (0.778, 0.809, 0.875 and 0.898, allP<0.01). Multivariate categorical analysis showed that aspect ratio, margin condition and the elastic strain rate ratio (χ2=13.73, 7.541 and 11.461, allP<0.05) of thyroid nodules were effective diagnostic indicators. Conclusions Our study indicated that CEUS and EI could be helpful modality for GSU to improve the diagnostic accuracy of thyroid nodules. The combined application of multi mode ultrasound examination has a high diagnostic value.

BackgroundMajor depressive disorder is one of the most disabling mental diseases. Currently， medication in combination with physiotherapy and psychotherapy remains the most commonly used treatment modality for the disease， whereas only a few randomized controlled studies have been conducted on physiotherapy， and even fewer studies have focused on medication combined with physiotherapy. ObjectiveTo explore the efficacy and safety profile of repetitive transcranial magnetic stimulation （rTMS） versus modified electroconvulsive therapy （MECT） in combination with antidepressants in the treatment of major depressive disorder， so as to provide an optimized treatment plan for patients with major depressive disorder. MethodsPatients with major depressive disorder （n=335） hospitalized in Shandong Daizhuang Hospital from January 1， 2019 to April 30， 2023 were included， all of whom met the diagnostic criteria of the International Classification of Diseases， tenth edition （ICD-10）. Depending on their disease condition， patients were subjected to either MECT in combination with drugs （n=141） or rTMS in combination with drugs （n=194） after admission. Depressive symptoms were assessed using Hamilton Depression Scale-24 item （HAMD-24） at the baseline and the end of the 1^st， 2^nd， 3^rd and 4^th week of treatment， and the adverse reactions were documented in patient's medical records. ResultsAnalysis of variance on HAMD-24 revealed a significant effect of time （F=3.081， P=0.042）， but no effect of group （F=1.023， P=0.313）， and the interaction effect between the time and the groups was not statistically significant （F=1.642， P=0.191）. No statistical difference was reported between two groups in response rate and full remission rate （P>0.05）. Throughout the course of treatment， 58 cases （41.13%） of recent memory impairment and 74 cases （52.48%） of headache or neck muscle pain occurred in MECT combined with drugs group， and 27 cases （13.92%） in rTMS combined with drugs group experienced headache or head skin discomfort. ConclusionAntidepressants in combination with rTMS or MECT show equivalent efficacy in the treatment of major depressive disorder， while rTMS combined with antidepressants demonstrates a superior safety profile compared to MECT.

Objective: To investigate the effects of over expression and low expression of antisense transcripts of circular RNA cerebellar degeneration associated protein 1 (CDR1as) in Balb/C mouse bone marrow mesenchymal stem cells (BMSCs) on factors related to osteogenesis and angiogenesis. Methods: BMSCs were cultured and identified in vitro. The lentiviral (LV) vector containing the overexpressed and silenced circRNA CDR1as genes and the control lentivirus were respectively transfected into mouse BMSCs, and stable cell lines were screened. The cells were divided into the circRNACDR1as over expression group and the over expression control group, and the CircRNACDR1as low expression group and the low expression control group. The components were stained with Alizarin Red S and alkaline phosphatase after 14 and 21 days of osteoinduction; qRT-PCR was used to detect the target genes circRNA CDR1as, osteogenic differentiation markers alkaline phosphatase (ALP), runt- related transcription factor 2 (RUNX2), osteocalcin (OCN), osteopontin (OPN), osterix(Osx), collagen I (COL-1), and the mRNA expression levels of vascular endothelial grown factor (VEGF) and angiogenin-1 (Ang-1). Results: The results of alizarin red staining and alkaline phosphatase staining showed that the extracellular matrix calcium precipitation and ALP staining area of the over expression experimental group was greater than its control group, and those of the low expression experimental group was less than its control group. As the number of days of osteogenic induction increased, the calcium precipitation and ALP staining in each group also increased. RT-PCR results showed that the mRNA expression levels of circRNA CDR1as, ALP, RUNX2, OCN, OPN, OSX, COL-1, VEGF and Ang-1 in the over expression experimental group BMSCs were significantly increased (P<0.001). In the low expression experimental group, the mRNA expression levels of circRNA CDR1as, ALP, RUNX2, OCN, OPN, OSX, COL-1, VEGF and Ang-1 in BMSCs were significantly reduced (P<0.001). Conclusion Over expression of the circRNA CDR1as gene promotes the osteogenic differentiation and angiogenesis of BMSCs. Low expression of the circRNA CDR1as gene inhibits the osteogenic differentiation and angiogenesis of BMSCs.

OBJECTIVE: To evaluate the correlation of magnetic resonance (MR) T₂-weighted image (T₂WI) signal characteristics of adenomyosis and the efficacy of high-intensity focused ultrasound (HIFU) ablation. METHODS: Based on the presence or absence of patchy hyperintense foci on preoperative MR T₂WI, the patients with adenomyosis undergoing HIFU treatment were divided into homogeneous signal group and heterogeneous signal group, and the heterogeneous group was further divided into heterogeneous hypointense group and heterogeneous isointense group according to signal intensity of the lesions. The patients in heterogeneous signal group were matched with the patients in the homogeneous group at a 1:1 ratio using the propensity score matching, and similarly, the patients in the heterogeneous hypointense group were matched with those in the heterogeneous isointense group at a 1:1 ratio. The non-perfused volume ratio (NPVR) and relief of dysmenorrhea were used to assess the therapeutic efficacy in the 4 groups. RESULTS: A total of 299 patients were enrolled, who had a median preoperative dysmenorrhea score of 7.0 (6.0, 8.0) and a median NPVR of 53.5% (35.4, 70.1)%. After propensity score matching, the NPVR in homogeneous signal group was significantly higher than that in heterogeneous signal group [(60.3 ± 21.8)% vs (44.6±21.6)%, P < 0.05]. At 3, 6 and 12 months after HIFU, dysmenorrhea relief rates were higher in homogeneous signal group than in heterogeneous signal group, and the difference was statistically significant at 12 months (91.1% vs 76.8%, P < 0.05). The NPVR of heterogeneous hypointense group was higher than that of heterogeneous isointense group [(54.0±22.0) % vs (47.3± 22.9) %, P < 0.05]. At 6 months after HIFU, dysmenorrhea relief rate was significantly higher in heterogeneous hypointense group than in heterogeneous isointense group (91.5% vs 80.9%, P < 0.05). CONCLUSION The signal characteristics of adenomyosis on T₂WI are closely related with the outcome of HIFU ablation, and its efficacy is better for homogeneous than for heterogeneous adenomyosis, and better for heterogeneous hypointense adenomyosis than for heterogeneous isointense adenomyosis.
Female ; Humans ; Adenomyosis/pathology* ; Dysmenorrhea ; Cohort Studies ; Propensity Score ; High-Intensity Focused Ultrasound Ablation/methods* ; Treatment Outcome

ObjectiveTo build an evaluation index system for traditional Chinese medicine （TCM） medicated diet， promoting the scientific and standardized development of medicated diet in TCM. MethodsThe framework of the evaluation index system was constructed through literature review and Delphi expert consultation method. The analytic hierarchy process was used to construct a hierarchical structure model. Pairwise comparisons between the indicators were conducted using the Saaty 1-9 scale method， and the weight of each indicator was calculated using Yaahp 10.3. ResultsThe response rates for the two rounds of expert consultation were 93.33% and 100%， respectively. The Kendall's W coefficients for the first-level and second-level indicators in the second round were 0.270 and 0.281， respectively （both P＜0.001）. Finally， an evaluation index system for TCM medicated diet therapy was constructed， consisting of 6 primary indicators and 27 secondary indicators. The weightings of the primary indicators were as follows： sensory appearance （0.1843）， health value （0.3569）， ingredient compatibility （0.1271）， packaging （0.0370）， production and preparation （0.1005）， and reliability （0.1940）. ConclusionA comprehensive and universally applicable evaluation index system for TCM medicated diet has been developed， taking into conside-rations of color， taste， appearance， efficacy， preparation， quality and others. This system can provide valuable reference for the evaluation of the value of medicated diet as well as its development.

OBJECTIVETo evaluate the efficacy and safety between endoscopic and microscopic surgery for transsphenoidal pituitary adenoma.

METHODSRandomized or semi-random controlled trials comparing endoscopic with microscopic surgery for transsphenoidal pituitary adenoma and published between January 2000 and July 2013 were recruited. This meta-analysis (RevMan 5.1 software) was conducted to estimate short-term and long-term complications. Fixed random effect model or semi-random effect model was established to analyse the data.

RESULTSTwelve randomized or semi-random controlled trials were included in this study. Among 848 patients studied, 380 of them were treated with endoscopic and 468 were treated with microscopic. The analysis of the basic characteristics of these patients included in these studies showed that: compared with microscopic, the follow-up of patients in endoscopic group was shorter [OR = -2.29, 95%CI (-4.18, -0.39), P = 0.02], while there were no significant difference in gender proportion and the age of patients between the two groups (P > 0.05) . Also, compared with endoscopic, there was a significant addition in the incidence of diabetes insipidus [OR = 0.45, 95%CI(0.30,0.66), P < 0.0001] and other complications [OR = 0.26, 95%CI ( 0.12, 0.57), P = 0.0008] in the microscopic group, the blood loss during surgery was more [OR = -0.62, 95%CI(-1.19, 0.05), P = 0.03], the rate of complete tumor resection lower [OR = 0.61, 95%CI(0.39, 0.96), P = 0.03], and the hospitalization [OR = -1.53, 95%CI(-2.18, -0.88), P < 0.00001] was also significantly longer, there was no significant difference in the incidence of cerebrospinal fluid leakage, operation time and vision improvement rate (P > 0.05).

CONCLUSIONFor patients with pituitary tumors, endoscopic surgery may be more suitable compared with microscopic.

Adenoma ; Endoscopy ; Evidence-Based Medicine ; Humans ; Microsurgery ; Neurosurgical Procedures ; methods ; Pituitary Neoplasms ; surgery ; Randomized Controlled Trials as Topic ; Treatment Outcome

METTL3 and METTL14 are two components that form the core heterodimer of the main RNA m6A methyltransferase complex (MTC) that installs m6A. Surprisingly, depletion of METTL3 or METTL14 displayed distinct effects on stemness maintenance of mouse embryonic stem cell (mESC). While comparable global hypo-methylation in RNA m6A was observed in Mettl3 or Mettl14 knockout mESCs, respectively. Mettl14 knockout led to a globally decreased nascent RNA synthesis, whereas Mettl3 depletion resulted in transcription upregulation, suggesting that METTL14 might possess an m6A-independent role in gene regulation. We found that METTL14 colocalizes with the repressive H3K27me3 modification. Mechanistically, METTL14, but not METTL3, binds H3K27me3 and recruits KDM6B to induce H3K27me3 demethylation independent of METTL3. Depletion of METTL14 thus led to a global increase in H3K27me3 level along with a global gene suppression. The effects of METTL14 on regulation of H3K27me3 is essential for the transition from self-renewal to differentiation of mESCs. This work reveals a regulatory mechanism on heterochromatin by METTL14 in a manner distinct from METTL3 and independently of m6A, and critically impacts transcriptional regulation, stemness maintenance, and differentiation of mESCs.
Animals ; Mice ; Methylation ; Chromatin ; Histones/metabolism* ; RNA, Messenger/genetics* ; Methyltransferases/metabolism* ; RNA/metabolism*