Bone marrow-derived mesenchymal stem cell (BMSC) transplantation is one ot the most popular therapeutic measures in severe acute pancreatitis (SAP). However, technical challenges and ethical concern have hindered its clinical application. Paracrine factor, as a new safe and easy handing therapeutic measure, can work comparably effective as BMSC transplantation in SAP therapy, but bio-safe risks could be greatly reduced. In this paper, we reviewed the therapeutic effect and potential mechanism of paracrine factors in the treatment of SAP. The injection of paracrine factors yielded from cultured cell suspension will be a new cell therapeutic measure for SAP.
Cells, Cultured ; Humans ; Mesenchymal Stem Cell Transplantation ; Mesenchymal Stromal Cells ; chemistry ; Pancreatitis ; therapy

Objective To investigate the effects of endothelin-1 on the proliferation of HCT-116 cells. Methods The expression of endothelin-1 and endothelin receptors A and B in the HCT-116 cells was detected by RT-PCR and immunohistochemistry method.The effects of endothelin-1 at different concentrations and action time points on HCT-116 cells were measured by MTT assay and were analyzed by variance analysis.Results The expression of endothelin-1 and endothelin receptors A and B at the gene and protein levels in HCT-116 cells was detected.Endothelin-1 had significant effects on the proliferation of HCT-116 cells.The proliferation peak of HCT-116 cells was reached when the concentration of endothelin-1 was 1×10-7mol/L and the action time was 48 hours.Conclusions Endothelin-1 promotes proliferation of HCT-116 cells in a dose-and time-dependent manner,and the process is mediated by endothelin receptors.

Objective To observe the changes in the lung aquaporin 1 (AQP1) expression in adrenaline-induced pulmonary edema(PE),and the effect of Methylprednisolone (MP) on its expression.Methods Fifty Wister rats of 1-month old were randomly divided into 5 groups (10 rats in each group):control,adrenaline PE,MP A,MP B,and MP C groups,respectively.Control group animals were treated with 0.27 mL 9 g/L saline;PE group was given 2.7 mg/kg adrenaline (1 ∶ 1 000) by intraperitoneal injection;MP A,MP B and MP C groups rats were intraperitoneally injected 10 mg/kg,20 mg/kg,and 30 mg/kg MP intraperitoneally immediately after intraperitoneal injection of adrenaline,respectively.The morphology changes in the lungs were observed with HE staining,and lung wet/dry weight (W/D) was measured.The levels of AQP1 mRNA,AQP1 protein,and AQP1 distribution in the lung tissues were detected by using real time-polymerase chain reaction,Western blot,and immunohistochemical method.Results (1)PE group exhibited a faster breathing rate,and double lung volume increased significantly;there was a visible hemorrhagic distribution in the lung surface and cross section,endotracheal filled with white or pink foam liquid.(2) The W/D of rats in PE group was higher than that of the control group (6.50 ± 0.53 vs.4.59 ± 0.36,P ＜ 0.05).(3) Pathological grading of PE group (3.80 ± 0.42) increased significantly compared with that of the MP A group (3.30 ± 0.48),MP B group (2.30 ± 0.68) and MP C group (1.20 ± 0.42),and there were significant differences (all P ＜ 0.05).(4) Immunohistochemistry showed that the expression of AQP1 in PE group (1.20 ± 0.79) was reduced compared with that of the control group (4.20 ± 1.03),and there were significant differences (all P ＜ 0.05).(5) The levels of AQP1 mRNA and AQP1 protein (0.12 ± 0.43 and 0.20 ± 0.04) were significantly lower than those of the control group (0.90 ± 0.32 and 0.60 ± 0.15),and there were significant differences (all P ＜ 0.05);compared with PE group,AQP1 mRNA and AQP1 protein of each group with MP treatment showed the highest values (MP A group:0.17 ±0.06 and 0.32 ±0.04,MP B group:0.39 ±0.13 and 0.37-±0.09,MP C group:0.61 ±0.21 and 0.44 ± 0.07) (all P ＜ 0.05).Conclusion The expression of AQP1 reduced in adrenaline-induced PE rats.MP could improve the expression of AQP1,and significantly ameliorate the PE and bleeding.

Objective To explore the effect of comprehensive intervention on postoperative pain of patients with rectal disease. Methods A total of 200 patients with postoperative pain after the treatment of anorectal perianal disease from May 2015 to May 2016 were randomly divided into two groups with 100 cases each. The control group was treated with drugs and usual nursing, the observation group were adopted drugs and comprehensive nursing intervention. The improvement of pain, psychological states and the quality of sleep were compared between two groups. Results The VAS pain scores at 4, 6, 12, 24, 48 h after treatment was (2.1 ± 0.6), (3.3 ± 0.4), (3.5 ± 0.3), (2.3 ± 0.5), (1.9 ± 0.5) points in the observation group, and (3.0 ± 0.5), (5.1 ± 0.6), (6.2 ± 0.6), (5.7 ± 0.8), (5.8 ± 0.5) points in the control group, and the difference was statistically significant (t=8.539-38.806, P < 0.05). The Self-rating Anxiety Scale was (20.32 ± 6.16) points in the observation group, and (35.58 ± 7.43) points in the control group, and the difference was statistically significant (t=41.188, P<0.05). The sleep quality, the amount of sleep , sleep time, sleep efficiency of Pittsburgh Sleep Quality Index Questionnaire scores was (0.91±0.28), (0.86±0.2), (0.83±0.27), (0.59±0.31), (0.62±0.27), (0.58±0.41), (4.39±1.79) points in the observation group, and (1.61± 0.88), (1.32 ± 0.75), (1.59 ± 0.89), (1.34 ± 0.58), (1.36 ± 0.45), (1.29 ± 0.86), (8.51 ± 3.55) points in the control group, and the difference was statistically significant (t=4.557-17.740, all P<0.05). Conclusions The comprehensive intervention on postoperative pain relief in patients with anal disease is significant, it is beneficial to relieve the pain response, improve sleep quality, and achieve physical and psychological comfort, and has a positive effect to clinical.

Colorectal cancer(CRC) cell lines are ideal in vitro models for colorectal cancer study. Although the number of colorectal cell lines increases hence provides diversified choices for research, several problems occur including the uneven quality control, insufficient attention to the origin and biological characteristics of CRC cell lines, resulting in inappropriate selection of CRC cell lines for study. In this paper, we classify the current CRC cell lines for study, review the biological characteristics, current problems of experiment choices, and discuss the exact choice of cell lines for CRC study.
Cell Line ; Colorectal Neoplasms ; Humans

Intestinal inflammatory disease is a kind of non-specific disease with morbidity increasing yearly. It has been proved that the Toll like receptor 4 (TLR4) signaling pathways are closely related to intestinal inflammatory diseases. Myeloid differentiation protein 88 (Myd88) is a critical adaptor protein of TLR4 signaling and critical for the study of intestinal inflammatory disease, but stable Myd88 knockdown in vitro models of cell line are still very few. In the present study, an HIV-1-based lentivirus three-plamid packaging system was used for the construction of a lentivirual vector mediating RNA interference (RNAi) against Myd88 in intestinal fossae epithelial cell line-6 (IEC-6). Real-time PCR and Western blot were used to detect Myd88 expression. Annexin V staining and flowcytometry (FLM) were applied to detect and evaluate the early apoptosis. The results showed that lentiviral vectors containing the shRNA expression cassette specifically targeting Myd88 were constructed and efficiently stably knocked down Myd88 expression in IEC-6 cell line. Early apoptosis was significantly decreased after Myd88 knockdown. This study successfully constructed a lentivirus-based RNAi for Myd88 and detailed the key technique combined with characteristics of the early apoptosis after the Myd88 knockdown, provided a novel, stable and repeatable in vitro model for the pathogenesis, targeting therapeutic study for the intestinal inflammatory diseases.
Animals ; Apoptosis ; genetics ; Cell Line ; Epithelial Cells ; cytology ; Gene Knockdown Techniques ; Humans ; Inflammatory Bowel Diseases ; physiopathology ; Intestines ; cytology ; Lentivirus ; genetics ; metabolism ; Myeloid Differentiation Factor 88 ; genetics ; RNA Interference ; RNA, Messenger ; genetics ; RNA, Small Interfering ; genetics ; Rats ; Toll-Like Receptor 4 ; metabolism

Severe acute pancreatitis (SAP) is accompanied with complex pathogenic course and high mortality. The imbalance of immune response is an important cause which leads the SAP patients to the severe situation and even death. The immunomodulatory therapy can regulate the imbalance of inflammation, alleviate SAP-associated organ injury, and improve the prognosis of patients. Previous immunomodulatory therapy had some problems, such as single-object and simple-method. In recent years, some new methods of immunomodulatory therapy, such as regulating the apoptosis and mature of immune cells, applying of mesenchymal stem cells (MSCs) and multi-regulation methods, provide some new ideas and hopes for SAP therapy. This paper reviewed the history and recent research progresses of SAP immunomodulatory therapy.

To study the expression of X-linked inhibitor of apoptosis protein (XIAP) and cell apoptosis in vitro model of acute pancreatitis (AP), we carried out experiments to stimulate AR42J cell line with caerulein (10(-8) mol/L) for 12 hours, then collected cells at various time points (0 h, 4 h, 8 h, 12 h, and 24 h, respectively). We then observed the morphologic changes of AR42J cells with the stimulation of caerulein with electronic microscope. The gene expression of XIAP, caspase-3 and caspase-9 was detected using real-time fluorescence quantitative polymerase chain reaction (FQ-PCR), and the protein expression of XIAP was assessed by western blot. The activation of nuclear factor-kappa B (NF-kappaB) was measured by flow cytometry (FCM). With the stimulation of caerulein, the expression of XIAP and the NF-kappaB activation could first decrease and then increase, but the change of caspase-3 and caspase-9 expressions were opposite. XIAP may inhibit the cell apoptosis in rat pancreatic acinus AR42J cell lines at first with the stimulation of caerulein, then NF-kappaB can upgrade the expression of XIAP and increase the cell apoptosis.
Acinar Cells ; cytology ; metabolism ; Animals ; Apoptosis ; physiology ; Cell Line ; Ceruletide ; pharmacology ; NF-kappa B ; metabolism ; Pancreas ; cytology ; metabolism ; Pancreatitis ; metabolism ; Rats ; X-Linked Inhibitor of Apoptosis Protein ; genetics ; metabolism

Due to the high complexity and subject variability of motor imagery electroencephalogram, its decoding is limited by the inadequate accuracy of traditional recognition models. To resolve this problem, a recognition model for motor imagery electroencephalogram based on flicker noise spectrum (FNS) and weighted filter bank common spatial pattern ( wFBCSP) was proposed. First, the FNS method was used to analyze the motor imagery electroencephalogram. Using the second derivative moment as structure function, the ensued precursor time series were generated by using a sliding window strategy, so that hidden dynamic information of transition phase could be captured. Then, based on the characteristic of signal frequency band, the feature of the transition phase precursor time series and reaction phase series were extracted by wFBCSP, generating features representing relevant transition and reaction phase. To make the selected features adapt to subject variability and realize better generalization, algorithm of minimum redundancy maximum relevance was further used to select features. Finally, support vector machine as the classifier was used for the classification. In the motor imagery electroencephalogram recognition, the method proposed in this study yielded an average accuracy of 86.34%, which is higher than the comparison methods. Thus, our proposed method provides a new idea for decoding motor imagery electroencephalogram.
Brain-Computer Interfaces ; Imagination ; Signal Processing, Computer-Assisted ; Electroencephalography/methods* ; Algorithms ; Spectrum Analysis