Developing a prognosis and chemotherapy evaluating model for colon adenocarcinoma based on mitotic catastrophe-related genes.

Mitotic catastrophe (MC) is a novel form of cell death that plays an important role in the treatment and drug resistance of colon adenocarcinoma (COAD). However, MC related genes in COAD treatment and prognosis evaluation are rarely studied. In this study, the transcriptome data, somatic mutation and copy number variation data were obtained from The Cancer Genome Atlas (TCGA) database. The mitotic catastrophe related genes (MCRGs) were obtained from GENCARDS website. Differential gene analysis was conducted with LIMMA package. Univariate Cox regression analysis was used to identify prognostic related genes. Mutation analysis was performed and displayed by maftools package. RCircos package was used for localizing the position of genes on chromosomes. "Glmnet" R package was applied for constructing a risk model via the LASSO regression method. Consensus clustering analyses was implemented for clustering different subtypes. Functional enrichment analysis through Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) methods, immune infiltration analysis via single sample gene set enrichment analysis (ssGSEA), tumor mutation burden and drug sensitivity analysis by pRRophetic R package were also carried out for risk model or molecular subtype's assessment. Additionally, the connections between the expression of hub genes and overall survival (OS) were obtained from online Human Protein Atlas (HPA) website. Real-Time Quantitative Polymerase Chain Reaction (RT­qPCR) further validated the expression of hub genes. A total of 207 differentially expressed MCRGs were selected in the TCGA cohort, 23 of which were significantly associated with OS in COAD patients. Subsequently, we constructed risk score prognostic models with 5 hub MCRGs, including SYCE2, SERPINE1, TRIP6, LIMK1, and EEPD1. The high-risk patients suffered from poorer prognosis. Furthermore, we developed a nomogram that gathered age, sex, staging, and risk score to accurately forecast the clinical survival outcomes in 1, 3, and 5 years. The results of functional enrichment suggested a significant correlation between MCRGs characteristics and cancer progression, with important implications for the immune microenvironment. Moreover, patients who displayed high TMB and high risk score showed worse prognosis, and risk characteristics were associated with different chemotherapeutic agents. Finally, RT­qPCR verified the increased expression of the five MCRGs in clinical samples. The five MCRGs in the prognostic signature were associated with prognosis, and could be treated as reliable prognostic biomarkers and therapeutic targets for COAD patients with distinct clinicopathological characteristics, thereby providing a foundation for the precise application of pertinent drugs in COAD patients.

Mechanism of Wen Shen Xuan Bi Tang in treatment of osteoporosis based on network pharmacology and animal experimental verification / 中国药理学通报

Aim To predict and validate the mechanism of wenshen xuanbi tang(WSXBT) in treatment of osteoporosis (OP) based on network pharmacology, molecular docking techniques and in vivo experimental techniques. Methods Network pharmacology was used to screen the key ingredients and core targets of WSXBT for the treatment of osteoporosis. Metascape database was used for gene ontology (GO) biological process enrichment analysis and kyoto encyclopedia of genes and genomes (KEGG) signaling pathway enrichment analysis of core targets. AutoDockTools 1. 5. 7 software was applied in molecular docking to simulate the binding activity of key active ingredients to core targets. To study the efficacy of WSXBT on rats with osteoporosis and to verify the related targets and pathways, rat models of osteoporosis were established by excising the bilateral ovaries of rats. Enzyme-linked immunosorbent assay (ELISA) was used to detect the serum OPG, PINP and RANKL content. Biomechanical tester was applied to test the biomechanics of rat femurs. Micro-CT was applied to detect the femoral bone density. Then, Western blot was employed to measure the protein expression levels of phosphatidylinositol 3-kinase (PI3K) and protein kinase B (Akt). Results A total of 156 active ingredients of WSXBT were screened, involving 229 potential targets, 23 core targets and 145 signaling pathways. The molecular docking results showed that five key ingredients, including quercetin, kaempferol, naringenin, isobavachin and licochalcone a, possessed good binding ability to the core targets of PIK3R1 and AKT1. The results of in vivo experiments showed that WSXBT could significantly increase bone density, improve bone tissue microstructure, enhance femur biomechanics and increase PINP expression and OPG/RANKL ratio in rats with osteoporosis. Results of WB showed that WSXBT significantly increased p-PI3K/PI3K and p-Akt/Akt ratios. Conclusions WSXBT could improve bone mineral density in postmenopausal osteoporotic rats through PI3K/ Akt signaling pathway and increasing OPG/RANKL ratio.

Insights into the missing apiosylation step in flavonoid apiosides biosynthesis of Leguminosae plants.

Apiose is a natural pentose containing an unusual branched-chain structure. Apiosides are bioactive natural products widely present in the plant kingdom. However, little is known on the key apiosylation reaction in the biosynthetic pathways of apiosides. In this work, we discover an apiosyltransferase GuApiGT from Glycyrrhiza uralensis. GuApiGT could efficiently catalyze 2″-O-apiosylation of flavonoid glycosides, and exhibits strict selectivity towards UDP-apiose. We further solve the crystal structure of GuApiGT, determine a key sugar-binding motif (RLGSDH) through structural analysis and theoretical calculations, and obtain mutants with altered sugar selectivity through protein engineering. Moreover, we discover 121 candidate apiosyltransferase genes from Leguminosae plants, and identify the functions of 4 enzymes. Finally, we introduce GuApiGT and its upstream genes into Nicotiana benthamiana, and complete de novo biosynthesis of a series of flavonoid apiosides. This work reports an efficient phenolic apiosyltransferase, and reveals mechanisms for its sugar donor selectivity.

Functional characterization, structural basis, and regio-selectivity control of a promiscuous flavonoid 7,4'-di-O-glycosyltransferase from Ziziphus jujuba var. spinosa.

A highly efficient and promiscuous 7,4'-di-O-glycosyltransferase ZjOGT3 was discovered from the medicinal plant Ziziphus jujuba var. spinosa. ZjOGT3 could sequentially catalyse 4'- and 7-O-glycosylation of flavones to produce 7,4'-di-O-glycosides with obvious regio-selectivity. For 7,4'-dihydroxyl flavanones and 3-O-glycosylated 7,4'-dihydroxyl flavones, ZjOGT3 selectively catalyses 7-O-glycosylation. The crystal structure of ZjOGT3 was solved. Structural analysis, DFT calculations, MD simulations, and site-directed mutagenesis reveal that the regio-selectivity is mainly controlled by the enzyme microenvironment for 7,4'-dihydroxyl flavones and 3-O-glycosylated 7,4'-dihydroxyl flavones. For 7,4'-dihydroxyl flavanones, the selectivity is mainly controlled by intrinsic reactivity. ZjOGT3 is the first plant flavonoid 7,4'-di-O-glycosyltransferase with a crystal structure. This work could help understand the catalytic mechanisms of multi-site glycosyltransferases and provides an efficient approach to synthesise O-glycosides with medicinal potential.

Clinicopathologic characteristics and prognostic analysis of testicular diffuse large B-cell lymphoma / 中华血液学杂志

Objective: To analyze the clinicopathologic characteristics and prognosis of testicular diffuse large B-cell lymphoma (DLBCL) . Methods: A retrospective analysis was performed on 68 patients with testicular DLBCL admitted to Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine from October 2001 to April 2020. The gene mutation profile was evaluated by targeted sequencing (55 lymphoma-related genes) , and prognostic factors were analyzed. Results: A total of 68 patients were included, of whom 45 (66.2% ) had primary testicular DLBCL and 23 (33.8% ) had secondary testicular DLBCL. The proportion of secondary testicular DLBCL patients with Ann Arbor stage Ⅲ-Ⅳ (P<0.001) , elevated LDH (P<0.001) , ECOG score ≥ 2 points (P=0.005) , and IPI score 3-5 points (P<0.001) is higher than that of primary testicular DLBCL patients. Sixty-two (91% ) patients received rituximab in combination with cyclophosphamide, adriamycin, vincristine, and prednisone (R-CHOP) -based first-line regimen, whereas 54 cases (79% ) underwent orchiectomy prior to chemotherapy. Patients with secondary testicular DLBCL had a lower estimated 5-year progression-free survival (PFS) rate (16.5% vs 68.1% , P<0.001) and 5-year overall survival (OS) rate (63.4% vs 74.9% , P=0.008) than those with primary testicular DLBCL, and their complete remission rate (57% vs 91% , P=0.003) was also lower than that of primary testicular DLBCL. The ECOG scores of ≥2 (PFS: P=0.018; OS: P<0.001) , Ann Arbor stages Ⅲ-Ⅳ (PFS: P<0.001; OS: P=0.018) , increased LDH levels (PFS: P=0.015; OS: P=0.006) , and multiple extra-nodal involvements (PFS: P<0.001; OS: P=0.013) were poor prognostic factors in testicular DLBCL. Targeted sequencing data in 20 patients with testicular DLBCL showed that the mutation frequencies of ≥20% were PIM1 (12 cases, 60% ) , MYD88 (11 cases, 55% ) , CD79B (9 cases, 45% ) , CREBBP (5 cases, 25% ) , KMT2D (5 cases, 25% ) , ATM (4 cases, 20% ) , and BTG2 (4 cases, 20% ) . The frequency of mutations in KMT2D in patients with secondary testicular DLBCL was higher than that in patients with primary testicular DLBCL (66.7% vs 7.1% , P=0.014) and was associated with a lower 5-year PFS rate in patients with testicular DLBCL (P=0.019) . Conclusion: Patients with secondary testicular DLBCL had worse PFS and OS than those with primary testicular DLBCL. The ECOG scores of ≥2, Ann Arbor stages Ⅲ-Ⅳ, increased LDH levels, and multiple extra-nodal involvements were poor prognostic factors in testicular DLBCL. PIM1, MYD88, CD79B, CREBBP, KMT2D, ATM, and BTG2 were commonly mutated genes in testicular DLBCL, and the prognosis of patients with KMT2D mutations was poor.

Clinical features, gene mutation profile and prognosis analysis of diffuse large B-cell lymphoma complicated with follicular lymphoma / 白血病·淋巴瘤

Objective:To investigate the clinicopathologic characteristics, gene mutation profile and prognostic influencing factors of diffuse large B-cell lymphoma (DLBCL) complicated with follicular lymphoma (FL) (DLBCL/FL).Methods:The clinicopathological data of 50 DLBCL/FL patients admitted to Rui Jin Hospital Affiliated of Shanghai Jiao Tong University School of Medicine from February 2018 to November 2021 were retrospectively analyzed. Targeted sequencing was performed to assess the mutation profile of 55 lymphoma-related genes. The clinicopathological characteristics were summarized to evaluate the short-term therapeutic efficacy of all patients. Kaplan-Meier method was used to analyze the overall survival (OS) and progression-free survival (PFS) of patients. Cox regression risk models were used to assess the factors affecting the OS and PFS.Results:Among 50 DLBCL/FL patients, 23 cases (46%) were male, 22 cases (44%) had an international prognosis index (IPI) score ≥ 2 points, 16 cases (32%) were double-expression lymphoma (DEL) and 4 cases (8%) were double-hit lymphoma (DHL). The complete response (CR) and overall response rates were 68% (34/50) and 78% (39/50), respectively after the first-line therapy. The median follow-up time was 23.3 months (5.1-50.9 months). The 2-year OS rate was 82.1% and 2-year PFS rate was 67.1%; and the median OS and PFS were not reached. Targeted sequencing results showed that the mutation frequencies of KMT2D, MYD88, TP53, BTG2, DTX1, EZH2, CD70, CREBBP, DUSP2, HIST1H1C, HIST1H1E and PRDM1 genes in this cohort were more than 15%. Multivariate Cox regression analysis showed that male ( HR = 4.264, 95% CI 1.144-15.896, P = 0.031) and IPI score ≥ 2 points ( HR = 6.800, 95% CI 1.771-37.741, P = 0.007) were independent risk factors of PFS in newly diagnosed DLBCL/FL patients, and TP53 mutation ( HR = 4.992, 95% CI 1.027-24.258, P = 0.046) was an risk influencing factor of OS. Conclusions:The proportion of male and female DLBCL/FL patients is similar, with a small proportion of DHL. Mutations of KMT2D, MYD88 and TP53 genes are commonly found in DLBCL/FL patients. Generally, DLBCL/FL patients can have a high overall response and good prognosis. Male and IPI score ≥ 2 points are the independent risk factors of PFS, and TP53 mutation is an independent risk factor of OS in DLBCL/FL patients.

Identification of the novel natural product inhibitors of SHP2 from the plant Toona sinensis: In vitro and in silico study.

In this study, we tested the inhibitory activity of 45 natural products extracted from the plant Toona sinensis on SHP2 protein, and identified four natural product inhibitors. The natural product 1,2,3,6-Tetragalloylglucose (A-1) was first reported as a competitive inhibitor of SHP2, with an IC50 value of 0.20 ± 0.029 µM and the selectivity of 1.8-fold and 4.35-fold to high homologous proteins SHP1 and PTP1B, respectively. Compound A-1 also showed high inhibitory activity on SHP2-E76K and SHP2-E76A mutants, with IC50 values of 0.95 ± 0.21 µM and 0.29 ± 0.045 µM, respectively. Cell viability assay showed that compound A-1 could inhibit the proliferation of a variety of cancer cells. Apoptosis assay showed that compound A-1 could effectively induce apoptosis of KRASG12C-mut NCI-H23 and KRASG12S-mut A549 cells. Western blot assay showed that compound A-1 could down regulate the phosphorylation levels of Erk1/2 and Akt in NCI-H23 and A549 cells. Molecular docking showed that compound A-1 could effectively dock to the catalytic active region of SHP2. Molecular dynamics simulation explored the effect of compound A-1 on SHP2, revealing the deep-seated binding mechanism. This study would provide valuable clues for the development of SHP2 and its mutant inhibitors.

Clinicopathological characteristics and prognostic analysis of patients with female genital tract diffuse large B-cell lymphoma / 白血病·淋巴瘤

Objective:To investigate the clinicopathological characteristics, gene mutation profile, and prognostic factors of diffuse large B-cell lymphoma (DLBCL) in female genital tract.Methods:A retrospective analysis was performed on the clinicopathological data of 30 patients with female genital tract DLBCL who were admitted to Rui Jin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from October 2003 to October 2021. Targeted sequencing was used to detect 55 lymphoma-related genes, and the gene mutation status of patients was evaluated. Kaplan-Meier method was used for survival analysis, and prognostic factors were analyzed by Cox proportional hazards model.Results:The median age of 30 female genital tract DLBCL patients at diagnosis was 58 years old (23-77 years old). The initial symptoms mainly included abdominal pain, distension, and masses (8 cases, 32%). Tumors most commonly located in the adnexal region (including ovaries and fallopian tubes) (13 cases, 45%), of which 9 cases were unilateral. Twenty-one cases (70%) had multiple extra-nodal involvements, 22 cases (73%) had Ann Arbor stage Ⅲ-Ⅳ, 8 cases (27%) had Eastern Cooperative Oncology Group (ECOG) score of ≥2, and 22 cases (73%) had elevated lactate dehydrogenase (LDH), 21 cases (70%) had International Prognostic Index (IPI) score of 3-5. Within 30 patients, 11 patients (37%) received surgery, and all patients received R-CHOP regimen-based chemotherapy. All 30 cases were evaluated for efficacy, the complete remission rate was 83% (25/30), the 5-year progression-free survival (PFS) rate was 69.7%, and the 5-year overall survival (OS) rate was 79.6%. Univariate analysis showed that ECOG score ≥2 was associated with worse OS ( P = 0.048). Among the 30 patients, 7 patients (23%) were primary and 23 patients (77%) were secondary. The proportions of patients with Ann Arbor stage Ⅲ-Ⅳ, IPI score 3-5 and elevated LDH in secondary patients were higher than those in primary patients (all P < 0.001), but there were no significant differences in PFS and OS between the two ( P values were 0.261 and 0.671). The targeted sequencing results of 16 patients showed that the mutation rates of PIM1, MYD88, KMT2D, TP53, CARD11, CCND3 and GNA13 were all > 20%, and TP53 mutation was associated with poorer PFS and OS ( P values 0.012 and 0.002). Conclusions:Female genital tract DLBCL is a rare invasive extranodal DLBCL with similar survival prognosis in primary and secondary patients. High-frequency mutations of PIM1, MYD88 and TP53 genes may provide new directions for treatment.

Mycena subpiligera sp. nov., a Symbiotic Species from China Associated with the Seed Germination of Gastrodia elata

Mycena subpiligera, a new taxon in sect. Fragilipedes that can strongly enhance the germination efficiency of Gastrodia elata seeds, was discovered in subtropical areas of China. As revealed by a morphological comparison with related Mycena species as well as maximum likelihood (ML) and Bayesian phylogenetic analyses based on sequences of the internal transcribed spacer (ITS) and the large subunit (LSU) regions of nuclear ribosomal RNA, the new taxon can be distinguished from phenotypically similar and phylogenetically related species. Optimal cultural conditions for M. subpiligera basidiomata are reported, and the germination rate of the new species is compared with that of M. citrinomarginata.

Sperm-specific protein ACTL7A as a biomarker for fertilization outcomes of assisted reproductive technology / 亚洲男科学杂志(英文版)

Obtaining high-quality embryos is one of the key factors to improve the clinical pregnancy rate of assisted reproductive technologies (ART). So far, the clinical evaluation of embryo quality depends on embryo morphology. However, the clinical pregnancy rate is still low. Therefore, new indicators are needed to further improve the evaluation of embryo quality. Several studies have shown that the decrease of sperm-specific protein actin-like 7A (ACTL7A) leaded to low fertilization rate, poor embryo development, and even infertility. The aim of this study was to study whether the different expression levels of ACTL7A on sperm can be used as a biomarker for predicting embryo quality. In this study, excluding the factors of severe female infertility, a total of 281 sperm samples were collected to compare the ACTL7A expression levels of sperms with high and low effective embryo rates and analyze the correlation between protein levels and in-vitro fertilization (IVF) laboratory outcomes. Our results indicated that the ACTL7A levels were significantly reduced in sperm samples presenting poor embryo quality. Furthermore, the protein levels showed a significant correlation with fertilization outcomes of ART. ACTL7A has the potential to be a biomarker for predicting success rate of fertilization and effective embryo and the possibility of embryo arrest. In conclusion, sperm-specific protein ACTL7A has a strong correlation with IVF laboratory outcomes and plays important roles in fertilization and embryo development.

Research Progress on Chemical Constituents and Pharmacological Effects of Asari Radix et Rhizoma / 中国实验方剂学杂志

Asari Radix et Rhizoma （ARR） is a traditional Chinese medicine for relieving exterior syndrome， and its roots and stems contain rich chemical components， including volatile oils （terpenoids， aromatics and aliphatics）， lignans， flavonoids， etc. Clinically， it has been traditionally used for the treatment of diseases such as phlegm and cough， anemofrigid cold， rheumatic arthralgia due to its ability to spread cold. Modern pharmacological studies have shown that ARR played beneficial roles in analgesic， anti-inflammatory， antitussive， antiasthmatic， antiviral， antibacterial， sedative， antioxidative， and antidepressant responses， antihypertension， as well as tumor suppression. The current studies on the chemical composition of ARR mainly focused on volatile components， and little information is available for the occurrence and pharmacological effects of non-volatile components. In addition， there is a lack of clear classification of chemical components and the distribution of chemical components in medicinal parts and the origin of species. Therefore， in this study， the authors reviewed a large number of literature on the chemical compositions and pharmacological effects of ARR， and hoping to provide a reference for further pharmacological research and the new drug development of ARR.

Clinical Significance of Tfh/Tfr Cell Imbalance in Patients with B-Cell Lymphoma / 中国实验血液学杂志

OBJECTIVE@#To explore the role of follicular helper T cell (Tfh)/ follicular regulatory T cell (Tfr) imbalance in B-cell lymphoma (BCL).@*METHODS@#Sixteen BCL patients who were admitted to the Department of Hematology of The First People's Hospital of Yichang and 20 healthy people from December 2019 to November 2020 were enrolled and respectively divided into observation group and control group. The levels of Tfh and Tfr in peripheral blood were detected by flow cytometry. The changes of Tfh, Tfr, and Tfh/Tfr ratio were compared and the relationship between Tfh/Tfr ratio and efficacy, prognosis was analyzed.@*RESULTS@#Compared with the healthy controls, Tfh and Tfh/Tfr ratio in peripheral blood of the BCL patients increased (P<0.05, P<0.01), while levels of Tfr was decreased (P<0.01). After chemotherapy, Tfh and Tfh/Tfr ratio in peripheral blood of the BCL patients decreased significantly than before chemotherapy (P<0.01), but Tfr was no significant difference. Multivariate analysis showed that Tfh and Tfh/Tfr ratio were positively correlated with international prognostic index (IPI) score and Ann Arbor stage (r=0.626, 0.564, 0.573, 0.608, respectively), while Tfr negatively (r=－0.504, －0.542, respectively). According to the average value of Tfh/Tfr ratio at initial diagnosis, BCL patients were divided into Tfh/Tfr high ratio group and low ratio group. It was found that the complete remission (CR) rate, overall response rate (ORR), and survival time in the high ratio group were significantly lower than the low ratio group (P<0.01).@*CONCLUSION@#There is an imbalance of Tfh/Tfr ratio in peripheral blood of the BCL patients, and those with a high Tfh/Tfr ratio have lower CR, ORR and shorter survival time.

Bidirectional regulation of acupuncture: a subgroup analysis of multicenter randomized controlled trial of acupuncture with / 中国针灸

OBJECTIVE@#To explore the bidirectional regulation of acupuncture based on a subgroup analysis of multicenter randomized controlled trial of acupuncture with @*METHODS@#A total of 519 patients were included in the analysis, including 137 patients with constipation type irritable bowel syndrome (IBS-C) (92 cases in the acupuncture group and 45 cases in the polyethylene glycol [PEG] group), and 382 patients with diarrhea type irritable bowel syndrome (IBS-D) (252 cases in the acupuncture group and 130 cases in the pinaverium group). The patients in the acupuncture group were given acupuncture at Baihui (GV 20), Yintang (GV 29), Tianshu (ST 25), Shangjuxu (ST 37), Zusanli (ST 36), Sanyinjiao (SP 6) and Taichong (LR 3) once every other day, 3 times a week. The patients in the PEG group received polyethylene glycol 4000 powder orally, and the pinaverium group received pinaverium bromide tablets orally. All were treated for 6 weeks. The IBS symptom severity score (IBS-SSS) was assessed at baseline, treatment period (2, 4, 6 weeks of treatment) and 12 weeks of follow-up, and the IBS quality of life (IBS-QOL) score was evaluated at the baseline period, 6 weeks of treatment and 12 weeks of follow-up.@*RESULTS@#The total IBS-SSS scores of the two groups of IBS-C patients at 2, 4, 6 weeks of treatment and follow-up of 12 weeks were lower than those in the baseline period (@*CONCLUSION@#Acupuncture with

Correlation between curative effect and 5-HTTLPR polymorphism in treatment of diarrhea-predominant irritable bowel syndrome with acupuncture for regulating / 中国针灸

OBJECTIVE@#To compare the curative effect on diarrhea-predominant irritable bowel syndrome (IBS-D) between acupuncture for regulating @*METHODS@#A total of 231 patients with IBS-D were randomized into an acupuncture group (154 cases) and a western medication group (77 cases) at the ratio of 2 to 1. In the acupuncture group, acupuncture was applied to acupoint regimen for regulating @*RESULTS@#After treatment and in follow-up, the total scores of IBS-SSS in the patients of the two groups were all reduced as compared with those before treatment (@*CONCLUSION@#Acupuncture for regulating

Application of scenario interaction combined with phased goal teaching method in nursing teaching of cardiovascular medicine / 中华医学教育探索杂志

Objective:To study the application of scenario interaction combined with phased goal teaching method in nursing teaching of cardiovascular medicine.Methods:A total of 55 nursing students who interned in our department before the implementation of scenario interaction combined phased goal teaching method (from September 2017 to February 2019) were randomly selected into control group, and 55 nursing students who had internship in our department after the implementation of the nursing teaching model (from March 2019 to September 2020) were randomly selected as study group. One week before the students leaving the department, the comprehensive ability (theoretical assessment and practical assessment), thinking ability (Critical thinking disposition inventory-Chinese version, CTDI-CV), work satisfaction (Minnesota satisfaction questionnaire, MSQ) and psychological states (Maslach burnout inventory, MBI) were compared between the two groups of intern nursing students. SPSS 19.0 was used for chi-square test and t test. Results:One week before the students leaving the department, the scores of theoretical assessment, practical assessment, CTDI-CV scale, MSQ scale and personal achievement of MBI scale of intern nursing students in study group were higher than those in control group ( P<0.05). The scores of emotional exhaustion and depersonalization tendency of MBI scale in study group were lower than those in control group ( P<0.05). Conclusion:Scenario interaction combined with phased goal teaching method is beneficial to improve the comprehensive ability and job satisfaction, and strengthen the thinking ability and psychological states of intern nursing students.

The application of magnetic resonance imaging-guided microwave ablation for lung cancer.

CONTEXT: It is necessary to explore a minimally invasive, effective, and efficient treatment for those lung cancer patients who are poor candidates for surgery. AIM: This study aimed to investigate the application of microwave ablation (MWA) in the treatment of lung cancer. SETTINGS AND DESIGN: A total of 43 patients with 44 pulmonary lesions were examined following identical procedures before being randomly divided into two groups. The experimental group consists of 17 patients with a total of 18 pulmonary lesions, while the control group consists of 26 patients with a total of 26 pulmonary lesions. MATERIALS AND METHODS: The experimental group was treated using magnetic resonance imaging (MRI)-guided MWA while the control group was treated using computer tomography (CT)-guided MWA. A transverse relaxation time-turbo spin echo (T2-TSE) sequence was used for signal collection in the experimental group to determine puncture location and microwave needle position while T2-TSE, T1-turbo field echo, and diffusion-weighted MRI (DWI) sequences were used for timely efficacy evaluation. Whereas in the control group, CT axial scanning was performed to serve similar purposes. STATISTICAL ANALYSIS USED: A nonparametric Wilcoxon test, median (M [25%, 75%]). RESULTS: All of the 44 lesions were successfully located on the first attempt. The mean time for scanning and locating lung lesions under MRI and CT guidance were 64.53 and 42.96 min, the mean times of positioning were 12 and 18 min, and the mean durations of MWA were 12.48 and 15.06 min, respectively. CONCLUSIONS: As a minimally invasive method for treating lung tumors, MRI-guided MWA requires fewer localization scans, a shorter MWA duration, no radiation, real-time observation of the curative effect, and it prevents overtreatment.

Single-cell-resolution transcriptome map of human, chimpanzee, bonobo, and macaque brains.

Identification of gene expression traits unique to the human brain sheds light on the molecular mechanisms underlying human evolution. Here, we searched for uniquely human gene expression traits by analyzing 422 brain samples from humans, chimpanzees, bonobos, and macaques representing 33 anatomical regions, as well as 88,047 cell nuclei composing three of these regions. Among 33 regions, cerebral cortex areas, hypothalamus, and cerebellar gray and white matter evolved rapidly in humans. At the cellular level, astrocytes and oligodendrocyte progenitors displayed more differences in the human evolutionary lineage than the neurons. Comparison of the bulk tissue and single-nuclei sequencing revealed that conventional RNA sequencing did not detect up to two-thirds of cell-type-specific evolutionary differences.

Two New Apotirucallane-Type Triterpenoids from the Pericarp of Toona sinensis and Their Ability to Reduce Oxidative Stress in Rat Glomerular Mesangial Cells Cultured under High-Glucose Conditions.

Hyperglycemia is a strong risk factor for chronic complications of diabetes. Hyperglycemic conditions foster not only the production of reactive oxygen species (ROS), but also the consumption of antioxidants, leading to oxidative stress and promoting the occurrence and progression of complications. During our continuous search for antioxidant constituents from the pericarp of Toona sinensis (A. Juss.) Roem, we isolated two previously unreported apotirucallane-type triterpenoids, toonasinensin A (1) and toonasinensin B (2), together with five known apotirucallane-type triterpenoids (3-7) and two known cycloartane-type triterpenoids (8-9) from the pericarp. Compounds 8-9 were obtained from T. sinensis for the first time. Their structures were characterized based on interpretation of spectroscopic data (1D, 2D NMR, high-resolution electrospray ionization mass spectra, HR-ESI-MS) and comparison to previous reports. Compounds (2, 4, 6, 7, and 9) were able to inhibit proliferation against rat glomerular mesangial cells (GMCs) cultured under high-glucose conditions within a concentration of 80 µM. Compounds (2, 6, and 7) were tested for antioxidant activity attributable to superoxide dismutase (SOD), malondialdehyde (MDA), and ROS in vitro, and the results showed that compounds (2, 6, and 7) could significantly increase the levels of SOD and reduce the levels of MDA and ROS. The current studies showed that apotirucallane-type triterpenoids (2, 6, and 7) might have the antioxidant effects against diabetic nephropathy.

New observations on the effect of camellia oil on fatty liver disease in rats / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Camellia oil has become an important plant oil in China in recent years, but its effects on non-alcoholic fatty liver disease (NAFLD) have not been documented. In this study, the effects of camellia oil, soybean oil, and olive oil on NAFLD were evaluated by analyzing the fatty acid profiles of the plant oils, the serum lipids and lipoproteins of rats fed different oils, and by cytological and ultrastructural observation of the rats' hepatocytes. Analysis of fatty acid profiles showed that the polyunsaturated fatty acid (PUFA) n-6/n-3 ratio was 33.33 in camellia oil, 12.50 in olive oil, and 7.69 in soybean oil. Analyses of serum lipids and lipoproteins of rats showed that the levels of total cholesterol and low-density lipoprotein cholesterol in a camellia oil-fed group (COFG) were lower than those in an olive oil-fed group (OOFG) and higher than those in a soybean oil-fed group (SOFG). However, only the difference in total cholesterol between the COFG and SOFG was statistically significant. Cytological observation showed that the degree of lipid droplet (LD) accumulation in the hepatocytes in the COFG was lower than that in the OOFG, but higher than that in the SOFG. Ultrastructural analysis revealed that the size and number of the LDs in the hepatocytes of rats fed each of the three types of oil were related to the degree of damage to organelles, including the positions of nuclei and the integrity of mitochondria and endoplasmic reticulum. The results revealed that the effect of camellia oil on NAFLD in rats was greater than that of soybean oil, but less than that of olive oil. Although the overall trend was that among the three oil diets, those with a lower n-6/n-3 ratio were associated with a lower risk of NAFLD, and the effect of camellia oil on NAFLD was not entirely related to the n-6/n-3 ratio and may have involved other factors. This provides new insights into the effect of oil diets on NAFLD.