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1.
Front Physiol ; 14: 1200656, 2023.
Article En | MEDLINE | ID: mdl-37546532

EEG-based emotion recognition through artificial intelligence is one of the major areas of biomedical and machine learning, which plays a key role in understanding brain activity and developing decision-making systems. However, the traditional EEG-based emotion recognition is a single feature input mode, which cannot obtain multiple feature information, and cannot meet the requirements of intelligent and high real-time brain computer interface. And because the EEG signal is nonlinear, the traditional methods of time domain or frequency domain are not suitable. In this paper, a CNN-DSC-Bi-LSTM-Attention (CDBA) model based on EEG signals for automatic emotion recognition is presented, which contains three feature-extracted channels. The normalized EEG signals are used as an input, the feature of which is extracted by multi-branching and then concatenated, and each channel feature weight is assigned through the attention mechanism layer. Finally, Softmax was used to classify EEG signals. To evaluate the performance of the proposed CDBA model, experiments were performed on SEED and DREAMER datasets, separately. The validation experimental results show that the proposed CDBA model is effective in classifying EEG emotions. For triple-category (positive, neutral and negative) and four-category (happiness, sadness, fear and neutrality), the classification accuracies were respectively 99.44% and 99.99% on SEED datasets. For five classification (Valence 1-Valence 5) on DREAMER datasets, the accuracy is 84.49%. To further verify and evaluate the model accuracy and credibility, the multi-classification experiments based on ten-fold cross-validation were conducted, the elevation indexes of which are all higher than other models. The results show that the multi-branch feature fusion deep learning model based on attention mechanism has strong fitting and generalization ability and can solve nonlinear modeling problems, so it is an effective emotion recognition method. Therefore, it is helpful to the diagnosis and treatment of nervous system diseases, and it is expected to be applied to emotion-based brain computer interface systems.

2.
Brain Sci ; 12(12)2022 Dec 05.
Article En | MEDLINE | ID: mdl-36552132

Epilepsy is the second most common disease of the nervous system. Because of its high disability rate and the long course of the disease, it is a worldwide medical problem and social public health problem. Therefore, the timely detection and treatment of epilepsy are very important. Currently, medical professionals use their own diagnostic experience to identify seizures by visual inspection of the electroencephalogram (EEG). Not only does it require a lot of time and effort, but the process is also very cumbersome. Machine learning-based methods have recently been proposed for epilepsy detection, which can help clinicians make rapid and correct diagnoses. However, these methods often require extracting the features of EEG signals before using the data. In addition, the selection of features often requires domain knowledge, and feature types also have a significant impact on the performance of the classifier. In this paper, a one-dimensional depthwise separable convolutional neural network and long short-term memory networks (1D DSCNN-LSTMs) model is proposed to identify epileptic seizures by autonomously extracting the features of raw EEG. On the UCI dataset, the performance of the proposed 1D DSCNN-LSTMs model is verified by cross-validation and time complexity comparison. Compared with other previous models, the experimental results show that the highest recognition rates of binary and quintuple classification are 99.57% and 81.30%, respectively. It can be concluded that the 1D DSCNN-LSTMs model proposed in this paper is an effective method to identify seizures based on EEG signals.

3.
Dig Dis Sci ; 66(5): 1673-1682, 2021 05.
Article En | MEDLINE | ID: mdl-32591968

BACKGROUND: How gastric cancer (GC) incidence is associated with changes in the gastric microbiome has not been firmly established. The present study therefore aims to investigate the microbial communities present within the gastric mucosa of patients with superficial gastritis (SG) or GC. METHODS: Paired tumor and paracancerous samples of the gastric mucosa were collected from 18 patients being surgically treated for GC and from 32 patients with SG being treated via gastroscopy. The gastric microbiome in these samples was then profiled via 16S rRNA sequencing, with a linear discriminant analysis effect size (LEfSe) approach used to identify and compare different bacteria, and with PICRUSt used for predictive functional analyses. RESULTS: GC patients exhibited a distinct gastric microbiota profile from that observed in SG patients. These changes were evident in both tumor and paracancerous tissues from GC patients. Specifically, we found that 6 bacterial genera were specifically enriched in GC tissue samples relative to SG samples, while 18 genera were depleted in these same samples. Based on the differential abundance of these bacteria, we were able to calculate microbial dysbiosis index (MDI) values, which were significantly higher in GC patients than in SG patients. In addition, MDI values were negatively correlated with gastric Shannon index and were positively correlated with relative Helicobacter spp. abundance. Importantly, these MDI values were readily able to discriminate between GC and SG patient samples. Functional analysis suggested that GC patients were more likely to harbor a nitrosating microbial community. CONCLUSIONS: GC patients exhibited a gastric microbiome profile distinct from that observed in SG patients, with these differences being evident in both tumor and paracancerous tissues. Differences in the relative abundance of Helicobacter spp. may be the primary driver of gastric dysbiosis in GC patients.


Bacteria/isolation & purification , Gastric Mucosa/microbiology , Gastritis/microbiology , Gastrointestinal Microbiome , Precancerous Conditions/microbiology , Stomach Neoplasms/microbiology , Aged , Bacteria/genetics , Biopsy , Dysbiosis , Female , Gastrectomy , Gastric Mucosa/pathology , Gastric Mucosa/surgery , Gastritis/pathology , Gastritis/surgery , Gastroscopy , Humans , Male , Middle Aged , Precancerous Conditions/pathology , Precancerous Conditions/surgery , Ribotyping , Stomach Neoplasms/pathology , Stomach Neoplasms/surgery
4.
Sci Rep ; 5: 17516, 2015 Dec 01.
Article En | MEDLINE | ID: mdl-26620627

To identify clinicopathologic and treatment variables that could predict pathologic tumor response to short-term neoadjuvant chemotherapy (NAC) for patients with locally advanced gastric cancer. A retrospective analysis was conducted of 178 patients who underwent short-term NAC with EOX regimen followed by surgery from January 2008 to December 2010. Neoadjuvant treatment response was evaluated using tumor regression grade. Relationships between pathologic tumor response and clinicopathological factors were evaluated using logistic regression analysis. The benefits of regional arterial infusion chemotherapy were investigated separately. The postoperative pathological response rate was 46.1% (82/178) and 4 patients (2.2%) had complete pathological remission. Pathological response was significantly associated with tumor differentiation (P = 0.008), abnormal a-fetoprotein levels (P = 0.01) and administration approach to chemotherapy (intravenous versus regional arterial infusion chemotherapy) (P = 0.018). Most bone marrow toxicities, vomiting, nausea, alopecia, and fatigue were acceptable. Grade 3/4 toxicities were not commonly observed. The 3-year overall survival (OS) and recurrence free survival (RFS) were 67.0% and 53.0%, respectively. Regional arterial infusion NAC group had significantly better median RFS (48.0 versus 34.0 months) than the intravenous NAC group (P = 0.049). In conclusion, regional arterial infusion NAC can improve the pathological response rate of advanced gastric cancer treated with EOX regimen.


Infusions, Intra-Arterial/methods , Neoadjuvant Therapy/adverse effects , Stomach Neoplasms/blood , Stomach Neoplasms/mortality , Stomach Neoplasms/therapy , Adult , Aged , Disease-Free Survival , Female , Humans , Male , Middle Aged , Survival Rate
5.
Am J Cancer Res ; 5(6): 2012-21, 2015.
Article En | MEDLINE | ID: mdl-26269760

Retinoic acid is an effective agent in the treatment of epithelial and hematological malignancies. The present study demonstrates that retinoic acid chalcone (RAC), an analogue of retinoic acid inhibits cell proliferation and induces apoptosis in HCT-15 and CT26.WT colon cancer cell lines. In HCT-15 cells the percentage of apoptotic cells increased from 32.4 ± 3, 45.0 ± 3 to 72.6 ± 5% respectively at 10, 15 and 20 µg/mL compared to 3.7% in control. Similarly in CT26.WT cells the percentage increased from 28.6 ± 3, 41.2 ± 3 to 65.4 ± 5% on treatment with 10, 15 and 20 µg/mL concentrations of RAC after 72 h compared to 2.9 ± 1% in control. Western blotting, fluorescence-activated cell sorting analysis and reverse transcription-PCR assays were used to investigate these effects. RAC inhibited the overexpression of COX-2, PGE2 and PGE2 receptor (EP1 and EP4) in the colon cancer cell lines. RAC mediated inhibition of cell growth and induction of apoptosis through COX-2 inhibition was also confirmed by treating the HCT-15 and CT26.WT colon cancer cells with COX-2 inhibitor, indomethacin and transfection of cells with COX-2 small interfering RNA. In nude mice with tumor xenografts, treatment with RAC-supplemented diet caused inhibition of COX-2, PGE2, and PGE2 receptors (EP1, EP3, and EP4) in tumors. Thus RAC can be a potential candidate for the treatment of colon cancer through the inhibition of COX-2 expression and subsequent inhibition of PGE2 and PGE2 receptors.

6.
PLoS One ; 10(5): e0126296, 2015.
Article En | MEDLINE | ID: mdl-25946003

BACKGROUND: The protective role of IL-11, an IL-6 family cytokine, has been implicated in ischemia/reperfusion injury (IRI) in the heart and kidney, but its role has not been elucidated in liver IRI. This study was designed to evaluate the effects of IL-11 and its mechanism of action on liver IRI in a mouse model. METHODS: A partial (70%) warm liver IRI was induced by interrupting the artery/portal vein blood supply to the left/middle liver lobes. IL-11 mRNA expression of ischemic liver after reperfusion was analyzed. Signal transducer and activator of transcription 3 (STAT3) was analyzed following IL-11 treatment in vivo and in vitro. Next, IL-11 was injected intraperitoneally (ip) 1 hour before ischemia. Liver injury was assessed based on serum alanine aminotransferase levels and histopathology. Apoptosis and inflammation were also determined in the ischemic liver. To analyze the role of STAT3 in IL-11 treatment, STAT3 siRNA or non-specific (NS) siRNA was used in vitro and in vivo. RESULTS: IL-11 mRNA expression was significantly increased after reperfusion in the ischemic liver. STAT3, as a target of IL-11, was activated in hepatocytes after IL-11 treatment in vivo and in vitro. Next, effects of IL-11/STAT3 signaling pathway were assessed in liver IRI, which showed IL-11 treatment significantly attenuated liver IRI, as evidenced by reduced hepatocellular function and hepatocellular necrosis/apoptosis. In addition, IL-11 treatment significantly inhibited the gene expressions of pro-inflammatory cytokines (TNF-α and IL-10) and chemokines (IP-10 and MCP-1). To determine the role of STAT3 in the hepatoprotective effects of IL-11, STAT3 siRNA or NS siRNA was used prior to IL-11 treatment. The results showed STAT3 knockdown abrogated the protective effects of IL-11 in vitro and in vivo. CONCLUSIONS: This work provides first-time evidence for the protective effect of IL-11 treatment on hepatocyte in liver IRI, through the activation of the STAT3 pathway.


Interleukin-11/therapeutic use , Liver/blood supply , Reperfusion Injury/drug therapy , STAT3 Transcription Factor/metabolism , Alanine Transaminase/blood , Animals , Apoptosis/drug effects , Cells, Cultured , Chemokine CCL2/biosynthesis , Chemokine CXCL10/biosynthesis , Enzyme Activation , Inflammation/pathology , Interleukin-10/biosynthesis , Liver/pathology , Liver/surgery , Male , Mice , Mice, Inbred C57BL , RNA Interference , RNA, Small Interfering , STAT3 Transcription Factor/genetics , Signal Transduction , Tumor Necrosis Factor-alpha/biosynthesis
7.
World J Gastroenterol ; 21(3): 935-43, 2015 Jan 21.
Article En | MEDLINE | ID: mdl-25624728

AIM: To investigate the prognostic factors after resection for hepatitis B virus (HBV)-associated intrahepatic cholangiocarcinoma (ICC) and to assess the impact of different extents of lymphadenectomy on patient survival. METHODS: A total of 85 patients with HBV-associated ICC who underwent curative resection from January 2005 to December 2006 were analyzed. The patients were classified into groups according to the extent of lymphadenectomy (no lymph node dissection, sampling lymph node dissection and regional lymph node dissection). Clinicopathological characteristics and survival were reviewed retrospectively. RESULTS: The cumulative 1-, 3-, and 5-year survival rates were found to be 60%, 18%, and 13%, respectively. Multivariate analysis revealed that liver cirrhosis (HR = 1.875, 95%CI: 1.197-3.278, P = 0.008) and multiple tumors (HR = 2.653, 95%CI: 1.562-4.508, P < 0.001) were independent prognostic factors for survival. Recurrence occurred in 70 patients. The 1-, 3-, and 5-year disease-free survival rates were 36%, 3% and 0%, respectively. Liver cirrhosis (HR = 1.919, P = 0.012), advanced TNM stage (stage III/IV) (HR = 2.027, P < 0.001), and vascular invasion (HR = 3.779, P = 0.02) were independent prognostic factors for disease-free survival. Patients with regional lymph node dissection demonstrated a similar survival rate to patients with sampling lymph node dissection. Lymphadenectomy did not significantly improve the survival rate of patients with negative lymph node status. CONCLUSION: The extent of lymphadenectomy does not seem to have influence on the survival of patients with HBV-associated ICC, and routine lymph node dissection is not recommended, particularly for those without lymph node metastasis.


Bile Duct Neoplasms/surgery , Bile Ducts, Intrahepatic/surgery , Cholangiocarcinoma/surgery , Hepatectomy , Hepatitis B/complications , Lymph Node Excision , Adult , Aged , Bile Duct Neoplasms/mortality , Bile Duct Neoplasms/pathology , Bile Duct Neoplasms/virology , Bile Ducts, Intrahepatic/pathology , Bile Ducts, Intrahepatic/virology , Chi-Square Distribution , Cholangiocarcinoma/mortality , Cholangiocarcinoma/secondary , Cholangiocarcinoma/virology , Disease Progression , Disease-Free Survival , Female , Hepatectomy/adverse effects , Hepatectomy/mortality , Hepatitis B/diagnosis , Hepatitis B/mortality , Humans , Lymph Node Excision/adverse effects , Lymph Node Excision/mortality , Lymphatic Metastasis , Male , Middle Aged , Multivariate Analysis , Neoplasm Recurrence, Local , Neoplasm Staging , Patient Selection , Proportional Hazards Models , Retrospective Studies , Risk Factors , Time Factors , Treatment Outcome
8.
J Surg Res ; 193(1): 153-60, 2015 Jan.
Article En | MEDLINE | ID: mdl-25128925

BACKGROUND: To investigate the clinicopathologic characteristics of patients with both hepatitis B virus-surface antigen and hepatitis C virus antibody negative hepatocellular carcinoma (non-B non-C HCC [NBNC-HCC]) and examine the impact of occult hepatitis B virus infection (OBI) on patients' survival. METHODS: All patients with OBI were identified from a database of patients with NBNC-HCC who underwent surgical resection between January 1, 2006, and December 31, 2008. Their clinicopathologic and survival characteristics were compared with NBNC-HCC patients without OBI. RESULTS: Out of the 86 NBNC-HCC patients, 59 patients (68.6%) with OBI. A higher prevalence of hepatitis B core antigen positive rate, low platelet count, portal hypertension, and liver cirrhosis were observed in NBNC-HCC patients with OBI. The 1- and 3-y recurrence free survival rates were 66% and 25% in OBI group and 89% and 70% in the no OBI group, respectively (P < 0.001). The 1-, 3-, and 5-y overall survival rates were 86%, 55%, and 51% in OBI group and 93%, 85%, and 66% in no OBI group, respectively (P = 0.112). Multivariate analysis revealed that OBI (hazard ratio [HR] = 2.122; 95% confidence interval [CI], 1.086-4.149; P = 0.028), liver cirrhosis (HR = 2.411; 95% CI, 1.337-4.345; P = 0.003), and vascular invasion (HR = 5.858; 95% CI, 2.799-12.261; P < 0.001) were independent poor prognostic factors for recurrence free survival of patients with NBNC-HCC. CONCLUSIONS: NBNC-HCC patients with OBI had a poorer prognosis. OBI can be a useful predictor for recurrence in patients with NBNC-HCC after surgery.


Carcinoma, Hepatocellular , Hepatectomy/mortality , Hepatitis B, Chronic/mortality , Hepatitis B, Chronic/surgery , Liver Neoplasms , Carcinoma, Hepatocellular/mortality , Carcinoma, Hepatocellular/surgery , Carcinoma, Hepatocellular/virology , Databases, Factual/statistics & numerical data , Female , Follow-Up Studies , Hepatitis B Antibodies/blood , Hepatitis B Core Antigens/blood , Hepatitis C Antibodies/blood , Hepatitis C Antigens/blood , Hepatitis C, Chronic/mortality , Hepatitis C, Chronic/surgery , Humans , Liver Neoplasms/mortality , Liver Neoplasms/surgery , Liver Neoplasms/virology , Male , Middle Aged , Predictive Value of Tests , Prognosis , Recurrence , Retrospective Studies , Seroepidemiologic Studies , Survival Analysis
9.
World J Gastroenterol ; 20(43): 16268-74, 2014 Nov 21.
Article En | MEDLINE | ID: mdl-25473182

AIM: To explore the potential correlation between insulin-like growth factor receptor-1 (IGF-1R) expression and rectal cancer radiosensitivity. METHODS: Eighty-seven rectal cancer patients (cTNM I-III) treated in our department between January 2011 and December 2012 were enrolled. All subjects were treated with preoperative radiotherapy and radical resection of rectal carcinoma. Immunohistochemistry and reverse transcription polymerase chain reaction (RT-PCR) were performed to detect IGF-1R expression in pre-treatment and postoperative colorectal cancer specimens. Radiosensitivity for rectal cancer specimens was evaluated by observing rectal carcinoma mass regression combined with fibrosis on HE staining, degree of necrosis and quantity of remaining tumor cells. The relative IGF-1R expression was evaluated for association with tumor radiosensitivity. RESULTS: Immunohistochemistry showed diffuse IGF-1R staining on rectal cancer cells with various degrees of signal density. IGF-1R expression was significantly correlated with cTNM staging (P = 0.012) while no significant association was observed with age, sex, tumor size and degree of differentiation (P = 0.424, 0.969, 0.604, 0.642). According to the Rectal Cancer Regression Grades (RCRG), there were 31 cases of RCRG1 (radiation sensitive), 28 cases of RCRG2 and 28 cases of RCRG3 (radiation resistance) in 87 rectal cancer subjects. IGF-1R protein hyper-expression was significantly correlated with a poor response to radiotherapy (P < 0.001, r = 0.401). RT-PCR results from pre-radiation biopsy specimens also showed that IGF-1R mRNA negative group exhibited a higher radiation sensitivity (P < 0.001, r = 0.497). Compared with the pre-radiation biopsy specimens, the paired post-operative specimens showed a significantly increased IGF-1R protein and mRNA expression in the residual cancer cells (P < 0.001, respectively). CONCLUSION: IGF-1R expression level may serve as a predictive biomarker for radiosensitivity of rectal cancer before preoperative radiotherapy.


Biomarkers, Tumor/metabolism , Carcinoma/radiotherapy , Neoadjuvant Therapy , Radiotherapy, Intensity-Modulated , Receptors, Somatomedin/metabolism , Rectal Neoplasms/radiotherapy , Biomarkers, Tumor/genetics , Biopsy , Carcinoma/chemistry , Carcinoma/pathology , Carcinoma/surgery , Female , Fibrosis , Humans , Immunohistochemistry , Male , Middle Aged , Necrosis , Neoplasm Staging , RNA, Messenger/metabolism , Radiation Tolerance , Radiotherapy, Adjuvant , Receptor, IGF Type 1 , Receptors, Somatomedin/genetics , Rectal Neoplasms/genetics , Rectal Neoplasms/metabolism , Rectal Neoplasms/pathology , Rectal Neoplasms/surgery , Retrospective Studies , Reverse Transcriptase Polymerase Chain Reaction , Time Factors , Treatment Outcome , Up-Regulation
10.
Zhonghua Wei Chang Wai Ke Za Zhi ; 17(11): 1092-5, 2014 Nov.
Article Zh | MEDLINE | ID: mdl-25421767

OBJECTIVE: To explore the feasibility of short-term neoadjuvant chemotherapy (NACT) in patients with advanced gastric cancer (AGC), and to compare clinical efficacy of short-term neoadjuvant chemotherapy with different ways. METHODS: Clinical data of 310 AGC patients treated with one course of NACT using EOF regimen(epirubicin, oxaliplatin and fluorouracil plus calcium folinate) in our hospital from January 2008 to December 2011 were retrospectively analyzes. Efficacy was compared between regional arterial infusion chemotherapy and intravenously chemotherapy. RESULTS: All the 310 AGC patients completed one course of NACT and none was interrupted by adverse events. Postoperative pathological remission rate was 33.9% (105/310) and 5 patients (1.6%) had complete pathological remission. The pathologic response rate in the regional arterial infusion chemotherapy group was higher than that in the intravenously chemotherapy group(42.4% vs. 23.6%, P = 0.001). Multivariate analysis revealed that chemotherapy method(HR=1.827, 95% CI:1.006-3.316, P = 0.048) was associated with significantly higher pathologic response. CONCLUSIONS: Pathological response rate is quite low following short-term NACT. Regional arterial infusion chemotherapy with short-term NACT can improve the pathological response rate of advanced gastric cancer.


Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Neoadjuvant Therapy , Stomach Neoplasms/drug therapy , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Epirubicin , Fluorouracil , Humans , Infusions, Intra-Arterial , Leucovorin , Organoplatinum Compounds , Oxaliplatin , Remission Induction , Retrospective Studies
11.
Mol Med Rep ; 10(1): 486-90, 2014 Jul.
Article En | MEDLINE | ID: mdl-24788673

The present study aimed to examine the effects of recombinant human growth hormone (rhGH) on the sensitivity of a colorectal cancer cell line to radiotherapy, and to investigate its association with DNA damage and repair. Flow cytometry and immunofluorescence were employed to detect growth hormone receptor (GHR) expression in nine human colorectal cancer cell lines. A colony forming assay was performed to measure the colorectal cancer cell proliferation post­radiotherapy, as an indicator of radiotherapy sensitivity. The comet assay results were interpreted as an indicator of radiotherapy­induced DNA damage, and growth arrest and DNA damage 45 (GADD45) and apurinic/apyrimidinic endonuclease (APEN) protein expression were quantified with western blot analysis from the same cell lines. The results demonstrated that the colony­forming efficiency (CFE) was significantly increased in HCT­8 cells subject to radiotherapy and rhGH pretreatment compared with the cells treated with radiotherapy alone, in a dose­dependent manner (0­100 mg/l). This effect was enhanced under high doses of radiation (8 Gy; 52.1±2.9 vs. 21.0±2.7; P<0.001) and was ameliorated with GHR neutralizing antibody exposure. By contrast, rhGH pre­incubation did not change the colony formation rate in GHR(­) LOVO cells. rhGH intervention reduced the early HCT­8 cell DNA damage (21.53±2.88 vs. 36.56±3.93; P=0.003) as well as the following plateau phase, compared with cells treated with radiotherapy alone (5.5±0.42 vs. 9.07±0.84; P=0.012). rhGH upregulated GADD45 and APEN protein expression, which is associated with cellular stress responses and DNA damage repair (P=0.007). The results suggest that rhGH is able to protect colorectal cancer cells from radiation through the interaction with GHR, which is associated with the promotion of DNA damage repair activity.


DNA Repair/drug effects , Growth Hormone/pharmacology , Carrier Proteins/antagonists & inhibitors , Carrier Proteins/metabolism , Cell Line, Tumor , Colorectal Neoplasms/metabolism , Colorectal Neoplasms/pathology , Colorectal Neoplasms/radiotherapy , Comet Assay , DNA Damage/radiation effects , DNA-(Apurinic or Apyrimidinic Site) Lyase/metabolism , Gamma Rays , Growth Hormone/genetics , Growth Hormone/metabolism , HT29 Cells , Humans , Intracellular Signaling Peptides and Proteins/metabolism , GADD45 Proteins
12.
J Exp Clin Cancer Res ; 33: 13, 2014 Jan 29.
Article En | MEDLINE | ID: mdl-24476310

Colorectal cancer is the third most commonly diagnosed cancer worldwide. Although surgery remains the best treatment for this disease, adjuvant chemotherapy and radiotherapy are also very important in clinical practice. However, the notorious refractory lack of responses to radiochemotherapy greatly limits the application of radiochemotherapy in the context of colorectal cancer.There is a growing interest in the role that Aurora B may play in colorectal cancer cell survival as well as other cancer subtypes. In the current study, we sought to ascertain whether blocking of Aurora B signaling machinery by a small molecule inhibitor, CCT137690, could synergize radiation-induced colorectal cancer cell death. Results showed that CCT137690 increases the sensitivity of SW620 cells to radiation. Mechanistic studies revealed that Aurora B-Survivin pathway may be involved in this synergistic effect.Taken together, our results for the first time show that Aurora B inhibition and radiation exert a synergistic effect, resulting in enhanced colorectal cancer cell death. This synergistic effect is clinically relevant as lower doses of radiation could be used for cancer treatment, and could provide significant clinical benefits in terms of colorectal cancer management, while reducing unwanted side-effects.


Aurora Kinase B/metabolism , Imidazoles/pharmacology , Pyridines/pharmacology , Radiation Tolerance/drug effects , Aurora Kinase B/antagonists & inhibitors , Cell Line, Tumor , Cell Proliferation , Cell Survival/drug effects , Cell Survival/radiation effects , Colorectal Neoplasms , Humans , Inhibitory Concentration 50
13.
J Hepatobiliary Pancreat Surg ; 16(6): 858-64, 2009.
Article En | MEDLINE | ID: mdl-19789834

OBJECTIVE: The results of TIPS and the combined TIPS and portal-azygous disconnection for portal hypertension and variceal bleeding were evaluated. METHODS: 358 patients with portal hypertension were admitted to our clinical ward because of variceal bleeding. 263 patients underwent TIPS and 95 patients with combined TIPS and portal-azygous disconnection. Portal hemodynamics was evaluated by pressure measurements, venography and Doppler ultrasound before and 2 weeks after the procedure. The rates of shunt patency, rebleeding, encephalopathy and survival were observed during the follow-up period from 1 to 10 years. RESULTS: The portal pressure and HVPG were decreased significantly after TIPS. TIPS procedure was successfully performed in 97.50% patients. During 1 month after treatment, acute shunt occlusion occurred in 3.42% patients with TIPS and there were no occluded shunts in patients with combined TIPS and portal-azygous disconnection. Encephalopathy was observed in 36.50% patients with TIPS and 18.95% with combined TIPS and portal-azygous disconnection. Recurrent variceal bleeding was documented in 6.46% patients with TIPS and none of patients with combined TIPS and azygous portal disconnection. Thirty-three patients with TIPS and two patients with combined TIPS and portal-azygous disconnection died. During follow-up periods, the patency of shunts in patients with TIPS and patients combined TIPS and azygous portal disconnection was 68.47, 43.84 and 87.06, 57.65% in 12 and 24 months after operation, respectively. The rates of rebleeding, and encephalopathy in patients with TIPS and patients with combined TIPS and azygous portal disconnection were 17.95, 31.79 and 7.04, 16.47%, respectively. The survival rate in 1, 5, 10 years in patients with TIPS and patients combined TIPS and azygous portal disconnection was 87.68, 51.23, 39.90 and 94.12, 81.18, 76.47%. CONCLUSION: Combined TIPS and portal-azygous disconnection can improve the effect of TIPS for portal hypertension.


Azygos Vein/surgery , Esophageal and Gastric Varices/surgery , Gastrointestinal Hemorrhage/surgery , Hypertension, Portal/surgery , Portal Vein/surgery , Portasystemic Shunt, Transjugular Intrahepatic/methods , Adult , Esophageal and Gastric Varices/complications , Esophageal and Gastric Varices/mortality , Female , Follow-Up Studies , Hepatic Encephalopathy/diagnosis , Hepatic Encephalopathy/etiology , Humans , Male , Middle Aged , Portasystemic Shunt, Transjugular Intrahepatic/adverse effects , Portasystemic Shunt, Transjugular Intrahepatic/mortality , Prospective Studies , Time Factors
14.
J Surg Res ; 143(2): 294-9, 2007 Dec.
Article En | MEDLINE | ID: mdl-17764692

BACKGROUND: The aim of the present study was to analyze the expression of growth hormone receptor (GHR) in the colorectal adenoma-carcinoma sequence to determine whether its expression correlates with the various stages of cancer transformation. METHODS: GHR distribution was assessed by immunohistochemistry and semiquantitative reverse transcriptase polymerase chain reaction (RT-PCR) in normal, premalignant, and malignant colorectal lesions. RESULTS: Most of the normal mucous tissues and hyperplastic polyps showed no or weak immunoreactivity for GHR. In contrast, most of the adenoma and adenocarcinoma samples reacted strongly or moderately with monoclonal GHR antibodies. In RT-PCR, amplified fragments of the expected sizes (247bp) were detected in 90 of 90 samples examined, and the semiquantitative RT-PCR result showed an up-regulation of GHR mRNA expression during the polyp-adenoma-carcinoma sequence, which was consistent with the immunohistochemical results. CONCLUSIONS: Our results suggest that growth hormone/GHR plays a role in the development of colorectal carcinoma.


Adenocarcinoma/physiopathology , Adenoma/physiopathology , Carrier Proteins/genetics , Colorectal Neoplasms/physiopathology , Gene Expression Regulation, Neoplastic , Adenocarcinoma/genetics , Adenocarcinoma/pathology , Adenoma/genetics , Adenoma/pathology , Adenomatous Polyps/genetics , Adenomatous Polyps/pathology , Adenomatous Polyps/physiopathology , Carrier Proteins/metabolism , Colorectal Neoplasms/genetics , Colorectal Neoplasms/pathology , Human Growth Hormone/metabolism , Humans , Hyperplasia , Immunohistochemistry , Intestinal Mucosa/metabolism , Intestinal Mucosa/pathology , Intestinal Mucosa/physiopathology , RNA, Messenger/metabolism , Reverse Transcriptase Polymerase Chain Reaction , Up-Regulation
15.
Hepatobiliary Pancreat Dis Int ; 5(4): 613-6, 2006 Nov.
Article En | MEDLINE | ID: mdl-17085353

BACKGROUND: Patients with short bowel syndrome may require combined liver and intestinal transplantation due to total parenteral nutrition(TPN)-related liver damage. We report combined liver and intestinal allotransplantation as a non-composite technique in a patient in China. METHODS: During the operation, a 380 cm long intestine was transplanted with systemic drainage and aortic inflow, while the liver graft was placed in a piggyback fashion. Warm ischemic time of the donor graft was 2 minutes and 30 seconds, and cold ischemic time for intestinal and the liver graft was 6 hours and 40 minutes and 8 hours and 7 minutes, respectively. Immunosuppressants used after operation included tacrolimus, methylprednisolone, mycophenolate mofetil and Zenapax. RESULTS: The recipient recovered with no evidence of rejection and was kept well on tube feeding. Eventually, he died of massive hemorrhage of the thoracic cavity on day 210 after transplantation. CONCLUSION: The non-composite combined liver and intestinal allotransplantation is superior to composite technique in adult patients, particularly those who have had abdominal infection or repeated abdominal operations.


Intestine, Small/transplantation , Liver Transplantation/methods , Adult , Cholestasis/etiology , Cholestasis/surgery , Humans , Male , Short Bowel Syndrome/complications , Short Bowel Syndrome/surgery , Transplantation/methods
16.
World J Gastroenterol ; 10(6): 915-8, 2004 Mar 15.
Article En | MEDLINE | ID: mdl-15040046

AIM: To evaluate hepatic reserve function by investigating the change of functional hepatic flow and total hepatic flow in cirrhotic patients with portal hypertension. METHODS: HPLC method was employed for the determination of concentration of D-sorbitol in human plasma and urine. The functional hepatic flow (FHF) and total hepatic flow (THF) were determined by means of modified hepatic clearance of D-sorbitol combined with duplex doppler color sonography in 20 patients with cirrhosis and 10 healthy volunteers. RESULTS: FHF, evaluated by means of the D-sorbitol clearance, was significantly reduced in patients with cirrhosis in comparison to controls (764.74+/-167.91 vs 1195.04+/-242.97 mL/min, P<0.01). While THF was significantly increased in patients with cirrhosis in comparison to controls (1605.23+/-279.99 vs 1256.12+/-198.34 mL/min, P<0.01). Portal blood flow and hepatic artery flow all were increased in cirrhosis compared to controls (P<0.05 and P<0.01). D-sorbitol total clearance was significantly reduced in cirrhosis compared to control (P<0.01), while D-sorbitol renal clearance was significantly increased in cirrhosis (P<0.05). In controls FHF was similar to THF (1195.05+/-242.97 vs 1256.12+/-198.34 mL/min, P=0.636), while FHF was significantly reduced compared with THF in cirrhosis (764.74+/-167.91 vs 1605.23+/-279.99 mL/min, P<0.01). CONCLUSION: Our method that combined modified hepatic clearance of D-sorbitol with duplex doppler color sonography is effective in the measurement of FHF and THF. FHF can be used to estimate hepatic reserve function.


Hypertension, Portal/complications , Liver Circulation , Liver Cirrhosis/etiology , Liver Cirrhosis/physiopathology , Adult , Aged , Case-Control Studies , Female , Hepatic Artery/physiopathology , Humans , Indicators and Reagents/pharmacokinetics , Kidney/metabolism , Male , Middle Aged , Portal System/physiopathology , Sorbitol/pharmacokinetics
17.
Zhonghua Wai Ke Za Zhi ; 42(1): 45-7, 2004 Jan 07.
Article Zh | MEDLINE | ID: mdl-14989849

OBJECTIVE: To report the first case of non-composite combined liver and intestinal allotransplantation in China. The technical aspects of the case and pros and cons of such an approach versus composite technique were discussed. METHODS: The patient suffered from short bowel syndrome and TPN-related liver damage. A non-composite technique was used in this case. During operation, the whole 380 cm intestine was transplanted with systemic drainage and aortic inflow, while the liver graft was placed in a piggyback fashion. Warm ischemic time of donor graft was 2 min and 30 seconds, and cold ischemic duration for intestinal and liver graft was 6 hours and 40 and 8 hours and 7 utes respectively. Postoperative immunosuppression management includes tacrolimus, methylprednisolone, MMF and Zenapax. RESULTS: The recipient recovered smoothly with no evidence of rejection on days' follow up. Now he is maintained well on enteral nutrition. CONCLUSION: Non-composite technique should be considered in adult recipients, especially those with a history of abdominal infections or multiple laparotomies.


Intestines/transplantation , Liver Transplantation , Short Bowel Syndrome/therapy , Transplantation, Homologous/methods , Adult , Humans , Male , Treatment Outcome
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