Synthesis and evaluation for anti-HCoV-OC43 activity of novel aloperine derivatives with different core structures / 药学学报

In this study, we designed and synthesized 12 novel aloperine derivatives with different core structures. Among them, compound 3 with a ten-membered ring core was obtained through a special ring expansion reaction after γ-H Huffman elimination of quaternary ammonium salt, and the structure was verified by X-single crystal diffraction. Furthermore, their antiviral activity against human β-coronavirus HCoV-OC43 was evaluated by CCK-8 assay. Quaternary ammonium salt 2a and 3 had a good inhibitory effect against HCoV-OC43, and 2a had the highest anti-HCoV-OC43 activity with an EC50 values of 3.77 μmol·L-1 and a SI value of over 53.1. Schrӧdinger molecular docking results showed that both 2a and 3 might display their anti-HCoV-OC43 activity by directly acting on host TMPRSS2 and SR-B1. The results expanded the structural types of endocyclic aloperine and the function against coronavirus, and provided useful scientific data for the development of pharmaceutical applications of these compounds.

Advances in research methods for biosynthetic pathway analysis of active ingredients in traditional Chinese medicine / 中国中药杂志

The active ingredients in traditional Chinese medicine(TCM)are the foundation for the efficiency of TCM and the key to the formation of Dao-di herbs. It is of great significance to study the biosynthesis and regulation mechanisms of these active ingredients for analyzing the formation mechanism of Daodi herbs and providing components for the production of active ingredients in TCM by synthetic biology. With the advancements in omics technology, molecular biology, synthetic biology, artificial intelligence, etc., the analysis of biosynthetic pathways for active ingredients in TCM is rapidly progressing. New methods and technologies have promoted the analysis of the synthetic pathways of active ingredients in TCM and have also made this area a hot topic in molecular pharmacognosy. Many researchers have made significant progress in analyzing the biosynthetic pathways of active ingredients in TCM such as Panax ginseng, Salvia miltiorrhiza, Glycyrrhiza uralensis, and Tripterygium wilfordii. This paper systematically reviewed current research me-thods for analyzing the biosynthetic functional genes of active ingredients in TCM, elaborated the mining of gene elements based on multiomics technology and the verification of gene functions in plants in vitro and in vivo with candidate genes as objects. Additionally, the paper summarized new technologies and methods that have emerged in recent years, such as high-throughput screening, molecular probes, genome-wide association studies, cell-free systems, and computer simulation screening to provide a comprehensive reference for the analysis of the biosynthetic pathways of active ingredients in TCM.

Comparison of clinical efficacy between closed reduction combined with semi-circular external fixator and minimally invasive percutaneous plate osteosynthesis (MIPPO) in the treatment of middle and distal tibia fractures / 中国骨伤

OBJECTIVE@#To compare the clinical efficacy between closed reduction combined with semi-circular external fixator and minimally invasive percutaneous plate osteosynthesis (MIPPO) in the treatment of middle anddistal tibia fractures.@*METHODS@#The clinical data of sixty patients with middle and distal tibia fractures admitted between January 2019 and November 2022, were retrospectively analyzed. These patients were categorized into external fixation group (n=30) and internal fixation group (n=30). There were 18 males and 12 females in the external fixation group, with an average age of (49.29±2.35) years old. Among them, 14 patients presented with fractures on the left side, and 16 patients presented with fractures on the right side. Closed reduction, arched wire, and semi-circular external fixator were used for treatment. There were 20 males and 10 females in the internal fixation group, with an average age of (48.96±1.87) years old. Among them, 15 patients presented with fractures on the left side, and 15 patients presented with fractures on the right side. MIPPO technique was used for the treatment. Perioperative parameters, including time injury to surgery, surgical duration, incision length, intraoperative bleeding, time to active activity, and incision healing level, were compared between the two groups. Clinical outcomes were also assessed, including Johner-Wruhs scores, time to minimum pain-adapted full weight-bearing, visual analog scale (VAS), SF-36 scale, and complications.@*RESULTS@#The external fixation group exhibited a significantly shorter incision length (1.36±0.86) cm and lower intraoperative bleeding (10.83±5.73) ml compared to the internal fixation group (12.74±3.12) cm and (86.47±8.90) ml, respectively(P<0.05). The postoperative active activity time (1.50±0.54) days and minimum pain-adapted full weight-bearing activity time(108.87±3.43) days in the external fixation group were slightly delayed than the internal fixation group(1.15±0.98) days and (105.27±3.68) days, respectively(P<0.05). Over a mean postoperative follow-up duration of (6.23±1.89) months, both groups showed improved VAS and SF-36 scale scores. There were no statistically significant differences in VAS and SF-36 scale scores 1, 3, 6 months post-operatively between the two groups(P>0.05). The intraoperative surgical time in the external fixation group (35.42±9.31) minutes was shorter than that in the internal fixation group(74.22±7.81) minutes (P<0.05). There was no intraoperative vascular or nerve injury, nor postoperative skin necrosis in the external fixation group. However, skin necrosis was observed in 6 patientsin the internal fixation group, representing a statistically significant difference (P<0.05).@*CONCLUSION@#Both external fixation and plate internal fixation are effective methods for the treatment of middle and distal tibia fractures. External fixation exhibits the advantage of less surgical trauma and a lower incidence of complications.

Network Meta-analysis of efficacy and safety of Chinese patent medicines in treatment of insomnia / 中国中药杂志

To evaluate the efficacy and safety of Chinese patent medicines in the treatment of insomnia by frequency network Meta-analysis. Randomized controlled trials of Chinese patent medicines for insomnia were retrieved from CNKI, Wanfang, VIP, SinoMed, PubMed, EMbase and Cochrane Library databases from the time of database establishment to October 2020. The quality of the included RCTs was evaluated according to the Cochrane bias risk standard, and the data was analyzed by RevMan 5.3 and Stata/MP 15.1. A total of 11 kinds of Chinese patent medicines in 27 RCTs were included. According to Meta-analysis, in term of the effective rate, Tianmeng Liquid, Zaoren Anshen Capsules, Shumian Capsules, Shensong Yangxin Capsules, Shenqi Wuweizi Tablets, Shugan Jieyu Capsules, Anshen Bunao Liquid and Qiye Anshen Tablets combined with nonbenzodiazepine drugs(NBZDs) were superior to NBZDs alone. In term of the improvement of Pittsburg sleeping quality index(PSQI) score, Tianmeng Liquid, Shumian Capsules, Shensong Yangxin Capsules, Bailemian Capsules, Shenqi Wuweizi Tablets, Shugan Jieyu Capsules, Yangxue Qingnao Granules and Yindan Xinnaotong Capsules combined with NBZDs were superior to NBZDs alone. In terms of the safety, Shumian Capsules, Shensong Yangxin Capsules, Shenqi Wuweizi Tablets and Qiye Anshen Tablets combined with NBZDs were superior to NBZDs alone. In terms of the avoidance of dizziness and headache, Qiye Anshen Tablets combined with NBZDs were superior to NBZDs alone. The results of Network Meta-analysis indicated that in term of the effective rate, top three optimal medication regimens were NBZDs combined with Shugan Jieyu Capsules, combined with Zaoren Anshen Capsules and combined with Shensong Yangxin Capsules in the order from high to low. With the respect of improvement of PSQI score, top three optimal medication regimens were NBZDs combined with Yangxue Qingnao Granules, combined with Tianmeng Liquid and combined with Yindan Xinnaotong Capsules in the order from high to low. In terms of the safety, top three optimal medication regimens were NBZDs combined with Qiye Anshen Tablets, combined with Shensong Yangxin Capsules and combined with Shenqi Wuweizi Tablets in the order from high to low. In terms of the avoidance of dizziness and headache, top three optimal medication regimens were NBZDs combined with Qiye Anshen Tablets, combined with Zaoren Anshen Capsules and combined with Shumian Capsules in the order from high to low. In terms of the avoidance of fatigue, top three optimal medication regimens were NBZDs combined with Shensong Yangxin Capsules, combined with Shumian Capsules and combined with Qiye Anshen Tablets in the order from high to low. In conclusion, Chinese patent medicines combined with NBZDs can effectively alleviate the symptoms of insomnia with a high safety. However, the conclusion of this study needs to be verified by more high-quality studies because of the low methodological quality of the included studies.

Curve evolution during bracing in children with scoliosis secondary to early-onset neurofibromatosis type 1: indicators of rapid curve progression / 中华医学杂志(英文版)

BACKGROUND@#Scoliosis secondary to neurofibromatosis type 1 (NF1) in children aged 10°/year) were identified. The age at modulation and the AV before and after modulation were obtained. Patients with (n = 18) and without rapid curve progression (n = 10) were statistically compared.@*RESULTS@#Twenty-eight patients with a mean age of 6.5 ± 1.9 years at the initial visit were reviewed. The mean Cobb angle of the main curve was 41.7° ± 2.4° at the initial visit and increased to 67.1° ± 8.6° during a mean follow-up of 44.1 ± 8.5 months. The overall AV was 6.6° ± 2.4°/year for all patients. At the last follow-up, all patients presented curve progression of >5°, and 20 (71%) patients had progressed by >20°. Rapid curve progression was observed in 18 (64%) patients and was associated with younger age at the initial visit and a higher incidence of modulation change during follow-up (t = 2.868, P = 0.008 and 10°/year is associated with younger age at the initial visit, and modulation change indicated the occurrence of the rapid curve progression phase.

Value of SQLE Expression in Prognostic Evaluation of Patients with Acute Myeloid Leukemia / 中国实验血液学杂志

OBJECTIVE@#To analyze the relationship between the expression level of SQLE and the prognosis of patients with acute myeloid leukemia (AML) through large sample data.@*METHODS@#The data of genome, transcriptome, gene chip expression, and clinical information were statistically analyzed in multiple cohorts of AML patients with large samples.@*RESULTS@#It was found that the expression level of SQLE gene in tumor cells of AML patients was significantly higher than that of healthy controls (P=0.001). In the three AML corhort, the SQLE high expression group showed a worse therapeutic outcome (OS, P=0.009, P=0.0001, P=0.006; EFS, P=0.005, P=0.001). The unvariate and multivariate survival prognosis analysis indicated that the high expression of SQLE suggests lower event-free survival rate (EFS, HR=1.551, P<0.05) and overall survival rate (OS, HR=1.484, P<0.05). At the same time, it was also found that among different risk subgroups, the expression of SQLE in high risk group was higher (P<0.001, P=0.01), while the patients with high SQLE expression, who received allogeneic HSCT, had longer overall survival time (P=0.006).@*CONCLUSION@#The up-regulation SQLE expression suggests a poor prognosis for the patients with AML.

Research progress on the application of lower limb alignment in discoid meniscus injury / 中国骨伤

Discoid meniscus injury is a kind of common sports injury. Its treatment methods include arthroscopic discoid meniscus plasty, discoid meniscus subtotal resection, discoid meniscus total resection and so on. Although the short-term clinical effect is good, the long-term clinical effect is not ideal. At present, different scholars have different views on the choice of surgical methods for discoid meniscus injury. In recent years, many scholars have shown that the choice of operation and the change of lower limb force line are related to the therapeutic effect of discoid meniscus injury. This paper mainly summarizes the current situation of the treatment of discoid meniscus injury and the changes of the force line of the lower limbs after operation, and expounds therole of the evaluation of the force line of the lower limbs in the treatment of discoid meniscus, so as to provide the basis for the clinical individualized treatment of discoid meniscus injury.

The risk factors of periprosthetic fracture after hip arthroplasty:a meta-analysis / 中国骨伤

OBJECTIVE@#To explore risk factors of the periprosthetic fracture after hip arthroplasty.@*METHODS@#Potential studies were searched in databases including Pubmed, Embase, Cochrane Library, CNKI as well as Wanfang Database up to November 2018 and references in related literatures. The methodological quality of literature was estimated by Newcastle-Ottawa Scale. Raw data were merged and tested mainly by Revmain 5.3.@*RESULTS@#Seventeen studies in total were appropriate with 90 632 patients. The results revealed that it increased the risk of periprosthetic fracture after hip arthroplasty, including female (=1.62, 95%CI:1.44 to 1.82, =3.@*CONCLUSIONS@#Orthopedics doctors should constantly be cantious about the risk factors including female, revision and diagnosis of rheumatoid arthritis. They are supposed to prevent the periprosthetic fracture by gentle operation during hip arthroplasty and monitoring the functional exercise after operations when the above risk factors occur.

Pharmacological network-based study on interventional mechanism of Gu-Chang-Zhi-Xie pills for treatment of irritable bowel syndrome / 药学学报

This study was designed to explore the interventional mechanism involving "multi-components, multi-targets and multi-pathways" of Gu-Chang-Zhi-Xie pills (GCZX) for treatment of irritable bowel syndrome (IBS) using pharmacological network technology. Firstly, 96 active ingredients from GCZX pills were screened by ADME parameter filtration and chemical space principal component analysis, and the targets of anti-IBS function were predicted using PharmMapper online database. Secondly, AutoDock Vina was used to validate the docking between the active ingredients and predicted disease targets, and to establish the corresponding relationship between "pharmacodynamic molecules and target proteins". Finally, the target elements were mapped into the KEGG biological pathway by CluoGO plug-in, which further elucidates the potential relationship between the key targets and the mechanism of action of Gu-Chang-Zhi-Xie pills for treatment of IBS. The results showed that most of the top 11 key pharmacodynamic molecules were isoquinoline alkaloids, which mainly acted on inflammatory or pain targets, with different degrees of anti-inflammatory and analgesic effects. A total of 39 key targets were identified, including TPH1, TNF-α, IL-6, IFN-γ, MAO-A and IL-10. These targets were mapped to 29 KEGG pathways, of which the P-value of 5-HT signaling pathway was the smallest. Therefore, the pharmacodynamic molecules mainly act on 6 core targets and may play a major role in the regulation of 5-HT signal synthesis or transport pathway. This study sets an example for drug development and mechanistic investigation using innovative technology.

Chemical identification and quantification of Hu-Gu capsule by UHPLC-Q-TOF-MS and HPLC-DAD

Abstract Hu-Gu capsule is a traditional Chinese medical formula for preventing glucocorticoid-induced osteoporosis. In this work, an ultra-high performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry was developed for chemical identification of the phytochemical compositions in positive ion mode. A total of 41 compounds were detected in Hu-Gu capsule, and 25 compounds were characterized and identified by retention time, accurate mass within 5 ppm error and characteristic fragment ions. Among of them, four major flavonoids were further quantified by high performance liquid chromatography diode array detection in the four batches. The method was validated in terms of calibration curve regression coefficient (r 2 > 0.9994), repeatability (RSD < 3.5%), intra- and inter-day precision (RSD < 1.1%), recovery (93.0-106.4%), limit of detection (0.1 µg/ml), and limit of quantification (1 µg/ml). The research could provide the analysis of chemical composition and be helpful to control the quality of HGC.

Research progress of growth factors in the pathogenesis and developments of myopia / 国际眼科杂志(Guoji Yanke Zazhi)

Myopia is one of the most popular eye diseases all over the world. The development of the current understanding of its mechanism is still limited. Many studies indicated that the growth factors closely related to eye development and myopia. Some growth factors with biological activity, such as transforming growth factor ( TGF ), fibroblast growth factor ( FGF ) and epidermal growth factor ( EGF ), have an impact on scleral thickness variation, the regulation of the development of myopia and so on, which plays a non-negligible role in the pathogenesis of myopia. In this paper, the function of various growth factors in myopia will be reviewed.

Epigenetic Silencing of Eyes Absent 4 Gene by Acute Myeloid Leukemia 1-Eight-twenty-one Oncoprotein Contributes to Leukemogenesis in t(8;21) Acute Myeloid Leukemia / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>The acute myeloid leukemia 1 (AML1)-eight-twenty-one (ETO) fusion protein generated by the t(8;21)(q22;q22) translocation is considered to display a crucial role in leukemogenesis in AML. By focusing on the anti-leukemia effects of eyes absent 4 (EYA4) gene on AML cells, we investigated the biologic and molecular mechanism associated with AML1-ETO expressed in t(8;21) AML.</p><p><b>METHODS</b>Qualitative polymerase chain reaction (PCR), quantitative reverse transcription PCR (RT-PCR), and Western blotting analysis were used to observe the mRNA and protein expression levels of EYA4 in cell lines. Different plasmids (including mutant plasmids) of dual luciferase reporter vector were built to study the binding status of AML1-ETO to the promoter region of EYA4. Chromatin immunoprecipitation assay was used to study the epigenetic silencing mechanism of EYA4. Bisulfite sequencing was applied to detect the methylation status in EYA4 promoter region. The influence of EYA4 gene in the cell proliferation, apoptosis, and cell clone-forming ability was detected by the technique of Cell Counting Kit-8, flow cytometry, and clonogenic assay.</p><p><b>RESULTS</b>EYA4 gene was hypermethylated in AML1-ETO+ patients and its expression was down-regulated by 6-fold in Kasumi-1 and SKNO-1 cells, compared to HL-60 and SKNO-1-siA/E cells, respectively. We demonstrated that AML1-ETO triggered the epigenetic silencing of EYA4 gene by binding at AML1-binding sites and recruiting histone deacetylase 1 and DNA methyltransferases. Enhanced EYA4 expression levels inhibited cellular proliferation and suppressed cell colony formation in AML1-ETO+ cell lines. We also found EYA4 transfection increased apoptosis of Kasumi-1 and SKNO-1 cells by 1.6-fold and 1.4-fold compared to negative control, respectively.</p><p><b>CONCLUSIONS</b>Our study identified EYA4 gene as targets for AML1-ETO and indicated it as a novel tumor suppressor gene. In addition, we provided evidence that EYA4 gene might be a novel therapeutic target and a potential candidate for treating AML1-ETO+ t (8;21) AML.</p>

The clinical application of absorbable internal fixation system in maxillofacial fractures：systematic review and Meta-analysis / 中国组织工程研究

BACKGROUND:There are numerous clinical studies on comparing absorbable internal fixation system and titanium metal internal fixation system in maxilofacial fractures; however, the systematic reviews and Meta-analysis in this field are rare. OBJECTIVE:To compare the clinical effect of absorbable internal fixation system and titanium internal fixation system in maxilofacial fractures through systematic review and Meta-analysis. MATERIALS AND METHODS:The randomized controled trials and controled clinical trials regarding the application of absorbable internal fixation system and titanium internal fixation system in maxilofacial fractures were electronicaly retrieved from Medline, Embase, the Cochrane Central Register of Controled Trials, China Biology Medicine disc, and China Academic Journal Network Publishing Database using the keywords. Meta-analysis was conducted using Revman 5.3 software. RESULTS AND CONCLUSION:Thirteen clinical studies were included, and totaly 1 718 patients were involved. The Meta-analysis results showed that the removal rate of implants in the absorbable internal fixation system group was significantly lower than that in the titanium internal fixation group (P=0.000 2); there were no significant differences in the healing rate of fracture I stage, the incidence of insufficient fixation in fracture site and the incidence of long-term complications between these two groups. These results demonstrate that the efficiency and safety of absorbable internal fixation system in maxillofacial fracture is satisfactory, and can reduce the proportion of secondary surgical removal of the implant. More randomized controlled trials should be conducted to confirm this conclusion.

Qiangzhi decoction protects mice from influenza A pneumonia through inhibition of inflammatory cytokine storm / 中国结合医学杂志

<p><b>OBJECTIVE</b>To investigate the preventive effects of Qiangzhi Decoction (, QZD) on influenza A pneumonia through inhibition of inflammatory cytokine storm in vivo and in vitro.</p><p><b>METHODS</b>One hundred ICR mice were randomly divided into the virus control, the Tamiflu control and the QZD high-, medium-, and low-dose groups. Mice were infected intranasally with influenza virus (H1N1) at 10 median lethal dose (LD50). QZD and Tamiflu were administered intragastrically twice daily from day 0 to day 7 after infection. The virus control group was treated with distilled water alone under the same condition. The number of surviving mice was recorded daily for 14 days after viral infection. The histological damage and viral replication and the expression of inflammatory cytokines were monitored. Additionally, the suppression capacity on the secretion of regulated on activation normal T cells expressed and secreted (RANTES) and tumor necrosis factor-α (TNF-α) in epithelial and macrophage cell-lines were evaluated.</p><p><b>RESULTS</b>Compared with the virus control group, the survival rate of the QZD groups significantly improved in a dose-dependent manner (P<0.05), the viral titers in lung tissue was inhibited (P<0.05), and the production of inflammatory cytokines interferon-γ (IFN-γ), interleukin-6 (IL-6), TNF-α, and intercellular adhesion molecule-1 (ICAM-1) were suppressed (P<0.05). Meanwhile, the secretion of RANTETS and TNF-α by epithelial and macrophage cell-lines was inhibited with the treatment of QZD respectively in vitro (p<0.05) CONCLUSIONS: The preventive effects of QZD on influenza virus infection might be due to its unique cytokine inhibition mechanism. QZD may have significant therapeutic potential in combination with antiviral drugs.</p>

FLT3 gene overexpression and its clinical significance in acute myeloid leukemia with AML1/ETO fusion gene positive / 中国实验血液学杂志

This study was aimed to investigate the expression levels of FLT3 gene in AML-M2 patients carrying AML1/ETO fusion gene, and analyze its relation with clinical and laboratorial features and prognosis. RQ-PCR method was used to detect the expression level of FLT3 in bone marrow of 21 AML-M2 patients with AML1/ETO(+). The correlation of the expression level of FLT3 with clinical features, other laboratorial examinations and disease prognosis were analyzed. The results showed that gene expression level of FLT3 (FLT3 gene/ reference gene) in patients at initial diagnosis were 1.65%-261.5%. The expression level of FLT3 over 35% was defined as high expression group (12 cases) , while the expression level below 35% was defined as low expression group (9 cases) . The proportion of patients with extramedullary infiltration in high expression group was higher than that in low expression group (25% vs 0%, P = 0.2286). The proportion of patients at initial diagnosis with white blood cell count > 10×10(9)/L in high expression group was higher than that in low expression group (66.67% vs 22.22%), but there was no statistical significance (P = 0.0805). No significant difference was observed at the age (P = 0.1369) and the rate of bone marrow blasts (P = 0.6923) between the above mentioned two groups. The differences in complete remission rate (66.67% vs 88.89%, P = 0.3383), the relapse rate (66.67% vs 22.22%,P = 0.0805) and the mortality rate (50% vs 22.22%, P = 0.3666) between the two group were not significant, but there was a clear trend that the low expression group has a higher CR rate and a lower relapse rate and mortality rate. It is concluded that FLT3 gene high expression in AML-M2 patients with AML1/ETO(+) have a higher rate of relapse and hence poor prognosis. Therefore, detection of FLT3 expression level in routine clinical practice is important for patient's risk stratification, prognostic evaluation and effective treatment selection.

Over-expression of VEGF and MMP-9 in residual tumor cells of hepatocellular carcinoma after embolization with lipidol / 华中科技大学学报（医学）（英德文版）

The expression and implication of vascular endothelial growth factor (VEGF) and matrix metalloproteinase-9 (MMP-9) in residual hepatic tumor cells after lipiodol embolization were investigated. Two weeks after transplantation of VX2 tumor cells into the livers of rabbits, a xenograft model of the human hepatic neoplasm was successfully established. Forty rabbits were randomly divided into control group (n=20) and lipiodol group (n=20). For the control group, 1 mL normal saline was injected through the gastroduodenal artery, whereas 0.3 mL/kg lipiodol was applied for the lipiodol group. One week after embolization, the expression level of VEGF in the plasma was measured by using enzyme-linked immunosorbent assay (ELISA). A three-step immunohistochemical technique (ABC) was employed to detect the protein levels of VEGF and MMP-9 and the quantitative PCR for their mRNA levels was performed in the residual tumor cells. The VEGF in the plasma was significantly higher in the lipiodol group (1.42±0.29 ng/mL) than in the control group (1.12±0.21 ng/mL) (P<0.01). Moreover, the positive rate of VEGF protein in the residual tumor cells was significantly higher in the lipiodol group (62.13%±7.69%) than in the control group (53.16%±9.17%) (P<0.05). Similarly, the MMP-9 expression in the residual tumor cells was higher in the lipiodol group. The mRNA levels of VEGF (2.9313±2.4231) and MMP-9 (3.5721±1.6107) in the lipiodol group were significantly higher than those in the control group (1.5728±0.9453 and 1.7573±1.0641, respectively, P<0.05). Therefore, it was reasonable to speculate that the increased expression of VEGF and MMP-9 in residual hepatic tumor cells and tumor angiogenesis post-embolization would be responsible for the increased metastatic potentiality and invasiveness of these cells.

Heme oxygenase-1 promotes Caco-2 cell proliferation and migration by targeting CTNND1 / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Heme oxygenase-1 (HO-1) can be induced by inflammatory cytokines, oxidation, ischemia, hypoxia, and endotoxins. As a "graft survival protective gene," HO-1 is a hot spot in organ transplantation research. However, the role of HO-1 gene expression in the function of human colon adenocarcinoma cell line (Caco-2) cells has not been reported previously.</p><p><b>METHODS</b>The role of HO-1 in the proliferation and migration of Caco-2 cells was analyzed using a stable HO-1 expression plasmid. We constructed a recombinant adeno-associated virus plasmid containing the HO-1 gene, heme oxygenase 1 (HMOX1), which was transfected into Caco-2 intestinal cells. We identified a number of target genes by global microarray analysis combined with real-time polymerase chain reaction (PCR) and chromatin immunoprecipitation assay.</p><p><b>RESULTS</b>Our results showed that significant HO-1 upregulation was demonstrated in the Caco-2 cells after HO-1 transfection. Restoration of HO-1 expression promoted proliferation and invasion in vitro. The CTNND1 gene, a member of the armadillo protein family, was identified as a direct HO-1 target gene.</p><p><b>CONCLUSION</b>Overexpression of HO-1 promotes Caco-2 cell proliferation and migration by targeting the CTNND1 gene.</p>

Over-expression of VEGF and MMP-9 in residual tumor cells of hepatocellular carcinoma after embolization with lipidol / 华中科技大学学报（医学）（英德文版）

The expression and implication of vascular endothelial growth factor (VEGF) and matrix metalloproteinase-9 (MMP-9) in residual hepatic tumor cells after lipiodol embolization were investigated. Two weeks after transplantation of VX2 tumor cells into the livers of rabbits, a xenograft model of the human hepatic neoplasm was successfully established. Forty rabbits were randomly divided into control group (n=20) and lipiodol group (n=20). For the control group, 1 mL normal saline was injected through the gastroduodenal artery, whereas 0.3 mL/kg lipiodol was applied for the lipiodol group. One week after embolization, the expression level of VEGF in the plasma was measured by using enzyme-linked immunosorbent assay (ELISA). A three-step immunohistochemical technique (ABC) was employed to detect the protein levels of VEGF and MMP-9 and the quantitative PCR for their mRNA levels was performed in the residual tumor cells. The VEGF in the plasma was significantly higher in the lipiodol group (1.42±0.29 ng/mL) than in the control group (1.12±0.21 ng/mL) (P<0.01). Moreover, the positive rate of VEGF protein in the residual tumor cells was significantly higher in the lipiodol group (62.13%±7.69%) than in the control group (53.16%±9.17%) (P<0.05). Similarly, the MMP-9 expression in the residual tumor cells was higher in the lipiodol group. The mRNA levels of VEGF (2.9313±2.4231) and MMP-9 (3.5721±1.6107) in the lipiodol group were significantly higher than those in the control group (1.5728±0.9453 and 1.7573±1.0641, respectively, P<0.05). Therefore, it was reasonable to speculate that the increased expression of VEGF and MMP-9 in residual hepatic tumor cells and tumor angiogenesis post-embolization would be responsible for the increased metastatic potentiality and invasiveness of these cells.

Up-regulation of T-lymphoma and metastasis gene 1 in gastric cancer and its involvement in cell invasion and migration / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>T-lymphoma and metastasis gene 1 (Tiam1) produces a guanine nucleotide exchange factor (GNEF) that regulates guanosine triphosphatase, which transforms guanosine diphosphate to guanosine triphosphate. Recently published data indicate that Tiam1 was associated with gastric cancer. The aim of this study was to investigate biological effects and potential mechanisms of Tiam1 in gastric carcinoma.</p><p><b>METHODS</b>We analyzed the expression of Tiam1 in 114 pair-matched gastric neoplastic and adjacent non-neoplastic tissues by quantitative real-time PCR. We investigated Tiam1 expression and its prognostic value for gastric cancer. Furthermore, the functions of Tiam1 over-expression were analyzed with stable-expression Tiam1 plasmid in human gastric cancer cell lines.</p><p><b>RESULTS</b>Tiam1 expression was significantly associated with cell differentiation and lymphatic metastasis; expression of Tiam1 mRNA was up-regulated in gastric cancer compared to pair-matched adjacent non-tumor tissues. Analyses of surgical tissue samples and 5-year survival of gastric cancer patients showed that those with strong Tiam1 expression had significantly shorter overall survival time than those with negative Tiam1 expression. Ectopic expression of Tiam1 promoted cell growth, migration and invasion of gastric cancer cells in vitro.</p><p><b>CONCLUSIONS</b>In gastric cancer cells, Tiam1 affects multiple properties associated with acquisition of the metastatic phenotype, and may be a marker of gastric cancer progression and metastasis in a subset of cancer.</p>

Diagnosis of thyroid space-occupying lesions using real-time contrast-enhanced ultrasonography with sulphur hexafluoride microbubbles / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To explore the value of contrast-enhanced ultrasound (CEUS) in the diagnosis of thyroid occupied lesions with injection of sulphur hexafluoride microbubbles.</p><p><b>METHODS</b>Fifty nine cases of conventional ultrasonic diagnosis of thyroid lesions in patients with 73 lesions re-sulfur hexafluoride microbubble ultrasound contrast real-time inspection, the use of CEUS and contrast pulse sequencing (CPS).</p><p><b>RESULTS</b>Seventy-three lesions were satisfied with the dynamic contrast perfusion imaging. Ultrasound contrast prompted the 15 lesions (13 cases) of malignant lesions by postoperative pathology confirmed papillary thyroid carcinoma, ultrasound images showed a low or mixed echo, boundary ambiguity, accompanied by Microcalcification foci, blood flow distribution I rank or grade III. Ultrasound prompted 58 lesions (46 cases) of benign lesions, blood flow distribution of grade II or III, the performance of a variety of two-dimensional ultrasound image, showing cystic, solid or liquid-solid mass, border clearance. Contrast with the surrounding thyroid tissue, lesions<or=20 mm in diameter papillary thyroid carcinoma are poor blood supply type; diameter>or=20 mm papillary thyroid carcinoma, manifested prior to the beginning of the adjacent thyroid substance to enhance and dissection, showing the form of high-enhanced perfusion; thyroid follicular adenoma as early as the beginning of the adjacent thyroid substance to enhance and dissection, mass retained within the contrast agent longer time, showing the form of high-enhanced perfusion; nodular goiter enhanced for thyroid nodules and adjacent synchronization started to pick up in real terms, after the 6 lesions showed nodular contrast slightly earlier than the adjacent thyroid substance started to pick up, 28 lesions with synchronous real beginning of the adjacent thyroid dissection, 11 lesions of nodular dissipated early on (started receding time < or = 25 s) adjacent to thyroid substance.</p><p><b>CONCLUSION</b>The real-time CEUS with injecting sulphur hexafluoride microbubbles is valuable in the diagnosis and differential diagnosis of the thyroid occupied lesions.</p>