Objective To investigate the clinical efficacy of complete mesogaster excision in the radical gastrectomy for gastric cancer.Methods The clinical data of 100 patients with distal gastric cancer who were admitted to the First Affiliated Hospital of Harbin Medical University from January 2011 to December 2012 were retrospectively analyzed.All the patients underwent complete mesogaster excision in D2 radical gastrectomy for gastric cancer.The operation quality was evaluated according to operation time,volume of intraoperative blood loss,mean number of lymph nodes dissected,time to flatus,volume of drainage and duration of postoperative hospital stay.Patients were followed up by outpatient examination and telephone interview till May 2014.Results Complete mesogaster excision in the radical gastrectomy for gastric cancer was successfully carried out on all the 100 patients.The operation time,volume of intraoperative blood loss,mean number of lymph nodes dissected,time to flatus,volume of drainage and duration of postoperative hospital stay were (118 ± 34) minutes (range,90-160 minutes),(80±25)mL (range,45-135 mL),38± 10 (range,25-52),(3.0 ± 1.2)days (range,1.5-4.5 days),(62±15)mL (range,15-85 mL) and (7.0±1.5)days (range,4.0-11.5 days),respectively.According to the postoperative pathological results,there were 36 patients with high differentiated gastric carcinoma,38 with moderate and/or low differentiated gastric carcinoma,17 with low differentiated gastric carcinoma and 9 with signet ring cell carcinoma.After operation,3 patients had gastroplegia,2 with poor healing of abdominal incision,2 with duodenal stump fistula,1 with pancreatic fistula,and all of them were cured by conservative treatment.All the 100 patients were followed up for a mean time of 25.6 months (range,17.6-39.2 months).There was no tumor recurrence.Conclusions Complete mesogaster excision in the radical gastrectomy for gastric cancer is safe and feasible,with the advantage of minimal trauma,low morbidity and quick recovery during the follow up.

The tea beverages will be endowed with distinct aroma and taste, as well as various biologically active compounds including probiotic factors, when fermented with lactic acid bacteria (LAB). However, at present, few studies on the dynamics of flavors in tea soup at different fermentation stages were conducted. In this study, the composition of monosaccharides, aromatic components, free amino acids, and organic acids were measured, when the black tea beverages were fermented with Lactobacillus coryniformis FZU63 which was isolated from Chinese traditional kimchi. The results indicated that monosaccharides including glucose, fructose, mannose and xylose in black tea beverages are the main carbon sources for fermentation. In addition, the abundance of aromatic compounds in black tea soup are increased significantly at different fermentation stages, which endow the fermented black tea soup with fruit aroma on the basis of flowery and nutty aroma. Moreover, some bitter amino acids are reduced, whereas the content of sweet and tasty amino acids is elevated. Furthermore, the levels of lactic acid, malic acid, citric acid and other organic acids are accumulated during the fermentation. Additionally, sensory evaluation displays that black tea beverage is acquired with comprehensive high-quality after being fermented for 48 h. This study provides a theoretical basis to steer and control the flavor formation and quality of the fermented tea beverages during LAB fermentation.
Tea/chemistry* ; Beverages/microbiology* ; Camellia sinensis ; Fermentation ; Acids ; Amino Acids ; Glucose

Objective To investigate the effect of the fusion of leader peptide on the structure of human manganese superoxide dismutase (SOD2) and anti-cisplatin (DDP)-induced renal injury. Methods The effect of mitochondrion targeting sequence (MTS) on the structure and activity of SOD2 was analyzed by structure prediction and superoxide dismutase (SOD) specific-activity determination. The DDP injury model of Kunming (KM) mice was established, and amifostine (AMFT) was set as a positive control. Indicators such as kidney index, renal function, kidney antioxidant capacity, and appearance and pathology changes of mice kidney were used to evaluate the effect of MTS-SOD2 against DDP-induced kidney injury. Results The MTS leader peptide seemed to change the secondary and tertiary structures of SOD2 to some extent, but it also increased the specific activity of the MTS-SOD2 protein. Pre-administration of a medium dose of MTS-SOD2 (0.84 mg/kg) before the use of DDP significantly reduced the level of renal malondialdehyde and increased the SOD activity and total antioxidant capacity (T-AOC) in the kidney, thereby reducing the renal pathological damage and consequently maintaining renal function. The overall protective effect of MTS-SOD2 was comparable to or even better than that of 200 mg/kg AMFT. Conclusion The MTS leader peptide enhances the activity of SOD2 and confers it with an excellent anti-DDP-induced renal-injury effect because of its transmembrane function.

AIMTo study the effect of inducible nitric oxide synthase (iNOS) gene mediated by retroviral vector on the proliferation of cultured aortic vascular smooth muscle cell (VSMC) of rat and the possibility of iNOS gene therapy for vessel graft restenosis.

METHODSEx vitro VSMC were transfected by different viral titer of viral supernatant. The expression of the retroviral iNOS transgene was examined by RT-PCR and Western blot analysis. Nitric oxide (NO) release from infected cells was determined by Griess reaction. The inhibition of iNOS transgenosis on the proliferation of VSMC was detected by modified MTT assay.

RESULTSmRNA and protein of transferred iNOS gene were detected 48 hours post-gene transfer within the transfected cells. Levels of iNOSmRNA and protein in PLXSN-iNOS infected cells were positively correlated with viral titer of viral supernatant. PLXSN-treated VSMC showed no evidence of iNOS mRNA and protein. Transfection of PLXSN-iNOS into cultured VSMC resulted in a dose-dependent increase in NO production. And iNOS transgenosis significantly inhibited proliferation of VSMC. The inhibition effect was positively correlated with viral titer of viral supernatant.

CONCLUSIONiNOS gene could be quickly and effectively transferred into cultured VSMC by retroviral vector and its expression could significantly inhibit the proliferation of cultured VSMC. Retrovirus-mediated gene transfer of iNOS might play an important role in prevention of restenosis.

Animals ; Cell Proliferation ; Cells, Cultured ; Genetic Therapy ; Genetic Vectors ; genetics ; Graft Occlusion, Vascular ; prevention & control ; Male ; Myocytes, Smooth Muscle ; cytology ; enzymology ; Nitric Oxide Synthase Type II ; genetics ; metabolism ; RNA, Messenger ; genetics ; metabolism ; Rats ; Rats, Sprague-Dawley ; Retroviridae ; genetics ; metabolism ; Transfection

The therapeutic effect of tumor photodynamic therapy is severely limited by the hypoxic tumor microenvironment. Inhibiting tumor celloxygen consumption is a more effective way than increasing its oxygen supply to overcome the tumor hypoxia and enhance photodynamic therapy. To carry out this strategy, the supramolecular nanoparticles VER-ATO-SMN loaded with photosensitizer verteporfin (VER), oxygen-consuming inhibitor atovaquone (ATO), and stabilizer polyvinylpyrrolidone (PVP)-K30 were prepared by the nanoprecipitation method, and the optimal prescription was screened and optimized by single factor experiments. The results showed that the optimal prescription for VER-ATO-SMN was ATO∶VER (w/w) = 1∶1, PVP-K30 = 100 mg, N,N-dimethylformamide∶water (v/v) = 1∶10. The morphology, particle size, particle dispersion index and encapsulation efficiency of supramolecular nanoparticles were characterized. The VER-ATO-SMN showed a spherical morphology and was well dispersed. The hydrodynamic size of VER-ATO-SMN was 101.21 ± 4.30 nm as determined by dynamic light scattering (DLS). The encapsulation efficiencies of VER and ATO in VER-ATO-SMN prepared with the optimal prescription were 70.86% and 77.52%, respectively. The VER-ATO-SMN exhibited good laser stability and also showed high stability in conditions which simulated the physiological solution. Compared with free VER and VER liposome, VER-ATO-SMN performed enhanced therapeutic effect at the cell level. The mechanism was that VER-ATO-SMN could effectively incorporate into cells and improving the intracellular oxygen concentration by reducing the oxygen consumption of tumor cells could increase the amount of reactive oxygen species generated by VER mediated photodynamic therapy. The in vivo anticancer efficacy results of tumor-bearing mice suggested that VER-ATO-SMN could effectively inhibit the tumor growth or even completely eliminate the tumor. All animal experiments were performed in line with national regulations and approved by the Animal Experiments Ethical Committee of 900 Hospital of the Joint Logistics Team.

Objective To compare vein valve function following pharmacomechanical thrombolysis (PMT) with simple catheter-directed thrombolysis (CDT) for deep vein thrombosis. Methods We retrospectively analyzed the clinical data of sixty patients who suffered acute lower extremity deep vein thrombsis in our hospital between October 2016 and March 2017. All patients underwent contralateral preprocedural duplex and bilateral postprocedure duplex to access patency and valve function. The patients were divided into three groups including a group A with catheter-directed thrombolysis (CDT) alone (36 patients with 20 males and 16 females at average age of 56 years), a group B with PMT alone (15 patients with 8 males and 7 females at average age of 55 years), and a group C with PMT combined CDT (9 patients with 4 males and 5 females at average age of 56 years). The valve function was compared among the Group A, Group B and Group C. Results There were 40.0% (24/60) patients with bilateral femoral vein valve reflux, 40.0% (24/60) patients with unilateral femoral vein valve reflux (all in the treated limbs), 20% (12/60) patients had no reflux in both limbs. Of the limbs treated with CDT alone, PMT alone and PMT combined CDT, the rate of valve reflux was 38.9% (14/36), 33.3% (5/15), and 55.6% (5/9) respectively (P=0.077). Conclusion In the patients suffering acute DVT, PMT or PMT combined CDT does not hamper valve function compared with CDT alone.

OBJECTIVETo investigate the antiproliferation effect of cardamonin (CAR) and its possible mechanisms on human umbilical artery smooth muscle cells (HUASMCs) cultured in the mimicking insulin resistance (IR) medium.

METHODProliferation of HUASMCs was assayed by MTT method. The mRNA expression of mTOR, Raptor and Rictor was detected by a real-time PCR. The expression content was calculated by Livak method using internal control of beta-actin.

RESULTThe proliferation of HUASMCs cultured in the mimicking IR medium was significantly increased. Both in normal and mimic IR culture medium, cells proliferation was inhibited by CAR (1 x 10(-5), 1 x 10(-4) mol x L(-1)). Pretreated with PD98059 and LY294002, cell proliferation induced by phosphatidic acid (PA) was inhibited, and the mRNA expression of mTOR, Raptor and Rictor was significantly decreased by CAR in the mimic IR medium.

CONCLUSIONIt is implicated that antiproliferation of CAR is involved in mRNA expression decrease of mTOR and its relative protein Raptor and Rictor.

Adaptor Proteins, Signal Transducing ; genetics ; metabolism ; Carrier Proteins ; genetics ; metabolism ; Cell Proliferation ; drug effects ; Cells, Cultured ; Chalcones ; pharmacology ; Gene Expression Regulation ; drug effects ; Growth Inhibitors ; pharmacology ; Humans ; Myocytes, Smooth Muscle ; cytology ; drug effects ; metabolism ; RNA, Messenger ; genetics ; metabolism ; Rapamycin-Insensitive Companion of mTOR Protein ; Regulatory-Associated Protein of mTOR ; TOR Serine-Threonine Kinases ; genetics ; metabolism

With the increasing aging population, the incidence of wet age-related macular degeneration(wARMD)is gradually rising. The formation of neovascularization leads to recurrent hemorrhage in the macular region, which is one of the main causes of blindness in the elderly. Currently, the primary clinical treatment for wARMD is intravitreal injection of anti-vascular endothelial growth factor(VEGF)drugs. However, there are still some patients who have poor or no response to anti-VEGF drugs, resulting in suboptimal or ineffective clinical outcomes. Analyzing the specific influencing factors will be beneficial in guiding clinical decision-making. This article reviews the impact of factors such as advanced age, treatment duration, number of injections, characteristics of neovascular lesions, macular structure, intraocular cytokine levels, and genetics on the response to anti-VEGF therapy. In addition, recent studies have found that pericytes, as cellular components of microvascular walls, can influence the sensitivity to anti-VEGF therapy. This review summarizes the current research on the mechanisms of pericytes in poor or non-response to anti-VEGF therapy and discusses targeted strategies focusing on pericytes.

Objective: To make laboratorial diagnosis of imported yellow fever (YF) cases in Fujian province with molecular method . Methods: Serum and urine samples were collected from suspected cases at various time-points post illness onset. Real-time RT-PCR and nested RT-PCR were performed respectively for viral specific nucleotide detection and fragment amplification. Sequencing and restrictive fragment length polymorphism (RFLP) method were used to identify the wild virus infection. Results: A total of five cases with wild yellow fever virus (YFV) infection were confirmed in this study. It revealed that the viral agent belonged to Angola-71 like YFV, and the duration of viral agent in urine was longer than that in serum. Conclusions Simultaneous detection of serum and urine samples would increase detection sensitivity, and further RFLP method contributed to rapid identification of wild YFV infection and exclusion of positive result due to recent vaccination.

BACKGROUND: Previous studies have examined the bulk transcriptome of peripheral blood immune cells in acquired immunodeficiency syndrome patients experiencing immunological non-responsiveness. This study aimed to investigate the characteristics of specific immune cell subtypes in acquired immunodeficiency syndrome patients who exhibit immunological non-responsiveness. METHODS: A single-cell transcriptome sequencing of peripheral blood mononuclear cells obtained from both immunological responders (IRs) (CD4 + T-cell count >500) and immunological non-responders (INRs) (CD4 + T-cell count <300) was conducted. The transcriptomic profiles were used to identify distinct cell subpopulations, marker genes, and differentially expressed genes aiming to uncover potential genetic factors associated with immunological non-responsiveness. RESULTS: Among the cellular subpopulations analyzed, the ratios of monocytes, CD16 + monocytes, and exhausted B cells demonstrated the most substantial differences between INRs and IRs, with fold changes of 39.79, 11.08, and 2.71, respectively. In contrast, the CD4 + T cell ratio was significantly decreased (0.39-fold change) in INRs compared with that in IRs. Similarly, the ratios of natural killer cells and terminal effector CD8 + T cells were also lower (0.37-fold and 0.27-fold, respectively) in the INRs group. In addition to several well-characterized immune cell-specific markers, we identified a set of 181 marker genes that were enriched in biological pathways associated with human immunodeficiency virus (HIV) replication. Notably, ISG15 , IFITM3 , PLSCR1 , HLA-DQB1 , CCL3L1 , and DDX5 , which have been demonstrated to influence HIV replication through their interaction with viral proteins, emerged as significant monocyte marker genes. Furthermore, the differentially expressed genes in natural killer cells were also enriched in biological pathways associated with HIV replication. CONCLUSIONS We generated an atlas of immune cell transcriptomes in HIV-infected IRs and INRs. Host genes associated with HIV replication were identified as markers of, and were found to be differentially expressed in, different types of immune cells.
Humans ; Acquired Immunodeficiency Syndrome ; Transcriptome/genetics* ; HIV ; HIV Infections/genetics* ; Leukocytes, Mononuclear/metabolism* ; CD4-Positive T-Lymphocytes/metabolism* ; Virus Replication ; Membrane Proteins/metabolism* ; RNA-Binding Proteins/metabolism*