Objective To evaluate laparoscopic local resection for the treatment of gastric tumors. Methods The clinical data of 78 patients who received laparoscopic local resection at the PLA General Hospital from February 2006 to January 2010 were retrospectively analyzed. According to the tumor site and free range, total laparoscopic gastrectomy was applied to 45 patients, laparoscopic local resection was applied to 22 patients, laparoscopic and endoscopic tumor resection was applied to 11 patients. The efficacies of the surgical approaches were investigated. Results Laparoscopic local resection was successfully performed on the 78 patients without conversion to open surgery. The mean operation time and operative blood loss were 75 minutes (range, 45-120 minutes) and 60 ml (range, 35-90 ml), respectively. The mean diameter of the tumor was (2.5±1.3)cm (range, 0.7-4.8 cm). No mortality or morbidity occurred postoperatively. The bowel function recovery time and the duration of hospital stay were 35 hours (range, 25-42 hours) and 7.5 days (range, 6-9 days), respectively. The results of postoperative pathological examination verified that 63 patients were with gastric stromal tumor, 11 patients were with benign gastric diseases, including 5 with gastric heterotopic pancreas, 2 with inflammatory pseudotumor, 2 with hyperplastic polyp, 1 with schwannomas and one with angioma. Four patients were with carcinoid, 3 carcinoids were located in mucous layer and 1 invaded into muscular layer. The median time of follow-up was 26 months, and no anastomotic stenosis or port-site metastasis was observed. Of the 63 patients with gastric stromal tumor, 2 were treated with imatinib mesylate, 1 had tumor recurrence and received reoperation. Conclusion Laparoscopic local resection is safe and feasible for the treatment of benign gastric neoplasms, stromal tumor and early gastric tumors.

OBJECTIVETo analyze LC-MS fingerprints of Aristolochia manshuriensis for quality assessment with two different chemical pattern recognition models.

METHODLC-MS fingerprints of A. manshuriensis were established from 24 batches of samples from different habitats. SIMCA and Clustering analysis were used to compare the parameters of the 29 common peaks.

RESULTTwo methods had good consistency, while they reflected the inherent sample information from different perspectives, respectively.

CONCLUSIONModern equipment analysis technology and multivariable chemical pattern recognition would be an efficient way for quality control and variety identification of A. manshuriensis.

Aristolochia ; chemistry ; classification ; Chromatography, Liquid ; Cluster Analysis ; Drugs, Chinese Herbal ; chemistry ; Mass Spectrometry ; Phylogeny ; Quality Control

BACKGROUNDSuccessful lung transplantation has been limited by the scarcity of donors. Brain death (BD) donors are major source of lung transplantation. Whereas BD process induces acute lung injury and aggravates lung ischemia reperfusion injury. Carbon monoxide (CO) inhalation at 50-500 parts per million (ppm) can ameliorate lung injury in several models. We examined in rats whether CO inhalation in BD donor would show favorable effects on lung grafts.

METHODSRats were randomly divided into 4 groups. In sham group, donor rats received insertion of a balloon catheter into the cranial cavity, but the balloon was not inflated. In BD-only group, donor rats were ventilated with 40% oxygen after BD confirmation. In BD+CO250 and BD+CO500 groups, donor rats inhaled, after BD confirmation, 250 ppm or 500 ppm CO for 120 minutes prior to lung procurement, and orthotopic lung transplantation was performed. The rats were sacrificed 120 minutes after the lung transplantation by exsanguination, and their blood and lung graft samples were obtained. A total of 8 rats fulfilling the criteria were included in each group.

RESULTSThe inhalation decreased the severity of lung injury in grafts from BD donors checked by histological examination. CO pretreatment reversed the aggravation of PaO2/FiO2 in recipients from BD donors. The CO inhalation down-regulated pro-inflammatory cytokines (TNF-alpha, IL-6) along with the increase of anti-inflammatory cytokine (IL-10) in recipient serum, and inhibited the activity of myeloperoxidase in grafts tissue. The inhalation significantly decreased cell apoptosis in lung grafts, inhibiting mRNA and protein expression of intercellular adhesion molecule-1 (ICAM-1) and caspase-3 in lung grafts. Further, the inhalation activated phosphorylation of p38 expression and inhibited phosphorylation of anti-extracellular signal-regulated kinase (ERK) expression in lung grafts. The effects of CO at 500 ppm were greater than those at 250 ppm.

CONCLUSIONSCO exerts potent protective effects on lung grafts from BD donor, exhibiting anti-inflammatory and anti-apoptosis functions by modulating the mitogen-activated protein kinase (MAPK) signal transduction.

Administration, Inhalation ; Animals ; Apoptosis ; Brain Death ; Carbon Monoxide ; administration & dosage ; Extracellular Signal-Regulated MAP Kinases ; antagonists & inhibitors ; Inflammation ; prevention & control ; Intercellular Adhesion Molecule-1 ; analysis ; genetics ; Lung Transplantation ; methods ; Male ; Phosphorylation ; RNA, Messenger ; analysis ; Rats ; Rats, Wistar ; Tissue Donors ; p38 Mitogen-Activated Protein Kinases ; metabolism

Aged ; Carcinoma, Hepatocellular ; therapy ; Cardiac Tamponade ; etiology ; therapy ; Catheter Ablation ; adverse effects ; Female ; Humans ; Liver Neoplasms ; therapy

Adult ; Female ; Hepatitis B e Antigens ; blood ; Hepatitis B, Chronic ; blood ; diagnosis ; Humans ; Male ; Middle Aged ; Prognosis

OBJECTIVE Mitochondria plays a crucial role in cellular homeostasis by regulating various pro-cesses,including calcium signaling and mitophagy.This study aimed to explore the involvement of prohibitin 2(PHB2),an inner mitochondrial membrane protein,in the modulation of mitochondrial calcium dynamics and mitoph-agy.METHODS HEK293T cells were used as the experi-mental cells and were divided into control,PHB2 knock-down,and PHB2 overexpression groups.To evaluate mitochondrial calcium dynamics,Rhod-2 AM and Mito-Tracker Green fluorescence dyesrhod-2 staining and laser confocal microscopy were employed to visualize mito-chondrial calcium imaging.Additionally,Green-5N was utilized to measure the rate of mitochondrial calcium uptake.The mitochondrial membrane potential was assessed using JC-10 staining and laser confocal micros-copy,while cellular ATP levels were determined using ATP assay kits.Furthermore,mitochondrial autophagy was induced by treatment with CCCP,and the expression lev-els of TOM20,LC3,and PARKIN,key mitophagy-related proteins,were analyzed using Western blotting.RESULTS The results demonstrated that compared to the control group,the overexpression of PHB2 increased mitochon-drial calcium concentration,mitochondrial calcium uptake rate,ATP level and expression levels of LC3 and PAR-KIN,but decreased mitochondrial membrane potential and TOM20 expression.In contrast,PHB2 knockdown reduced mitochondrial calcium concentration,ATP level and expression levels of LC3 and PARKIN,but elevated mitochondrial membrane potential,and TOM20 expres-sion.CONCLUSION This study provides evidence that PHB2 plays a vital role in regulating mitochondrial calci-um dynamics,which in turn influences mitochondrial func-tion and modulates mitochondrial autophagy.These find-ings contribute to our understanding of the molecular mechanisms underlying the interplay between PHB2,mitochondrial calcium signaling,and mitophagy.

BACKGROUNDOpioid preconditioning (PC) reduces anoxia/reoxygenation (A/R) injury to various cells. However, it remains unclear whether opioid-induced delayed PC would show anti-apoptotic effects on pulmonary artery endothelial cells (PAECs) suffering from A/R injury. The present study was conducted to elucidate this issue and to investigate the potential mechanism of opioid-induced delayed PC.

METHODSCultured porcine PAECs underwent 16-hour anoxia followed by 1-hour reoxygenation 24 hours after pretreatment with saline (NaCl; 0.9%) or morphine (1 micromol/L). To determine the underlying mechanism, a non-selective K(ATP) channel inhibitor glibenclamide (Glib; 10 micromol/L), a nitric oxide (NO) synthase blocker NG-nitro-L-arginine methyl ester (L-NAME; 100 micromol/L), and an opioid receptor antagonist naloxone (Nal; 10 micromol/L) were given 30 minutes before the A/R load. The percentage of apoptotic cells was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining. eNOS mRNA level was measured by real-time polymerase chain reaction (PCR). NO content of PAECs supernatants was measured with the Griess reagent.

RESULTSCompared to the A/R PAECs, morphine-induced delayed PC significantly reduced PAECs apoptosis ((18.1 +/- 1.9)% vs (5.5 +/- 0.3)%; P < 0.05), increased NO release ((11.4 +/- 1.3) micromol/L vs (20.5 +/- 2.1) micromol/L, P < 0.05), and up-regulated eNOS gene expression nearly 9 times (P < 0.05). The anti-apoptosis effect of morphine was abolished by pretreatment with Glib, L-NAME and Nal, but the three agent-selves did not aggravate the A/R injury. Furthermore, L-NAME and Nal offset the enhanced release of NO caused by pretreatment with morphine.

CONCLUSIONSMorphine-induced delayed PC prevents A/R injury of PAECs. This effect may be mediated by activation of K(ATP) channel via opioid receptor and NO signaling pathways.

Analgesics, Opioid ; pharmacology ; Animals ; Apoptosis ; drug effects ; Cell Hypoxia ; Cells, Cultured ; Endothelial Cells ; cytology ; drug effects ; metabolism ; Enzyme Inhibitors ; pharmacology ; Glyburide ; pharmacology ; In Situ Nick-End Labeling ; Morphine ; pharmacology ; NG-Nitroarginine Methyl Ester ; pharmacology ; Naloxone ; pharmacology ; Narcotic Antagonists ; pharmacology ; Nitric Oxide ; metabolism ; Nitric Oxide Synthase Type III ; antagonists & inhibitors ; genetics ; metabolism ; Oxygen ; pharmacology ; Pulmonary Artery ; cytology ; RNA, Messenger ; genetics ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Swine

To find out epidemiological feature of paralytic cases caused by type 2 vaccine-derived poliovirus (VDPV) and the excretion status of the case and to explore the enterovirus infection status among healthy children under five years old around the case in Zhaotong city, Yunnan Province in 2010. Field epidemiological studies at the epidemic area were conducted and a total of 108 stool samples were collected, three from the case, seven from the close contacts and 98 from the healthy children. VDPV was not isolated again from the case; Sabin-like PV strains or VDPV were not isolated from the close contacts and the healthy children; An active search for acute flaccid paralysis cases was conducted in the area, which indicated that the VDPV did not cause virus circulation in local area. Twenty one (20.0%) NPEVs were isolated from 105 stool samples. Among the 21 NPEV isolates, 11 isolates (52.4%) were HEV-A (3 serotypes), 10 isolates (47.6%) were HEV-B (4 serotypes).
Child, Preschool ; China ; epidemiology ; Female ; Humans ; Infant ; Male ; Phylogeny ; Poliomyelitis ; epidemiology ; etiology ; Poliovirus ; classification ; isolation & purification ; Poliovirus Vaccines ; adverse effects

To explore the enteroviruses surveillance among healthy children under 15 years old in the border areas of Yunnan Province and Myanmar in 2009. The stool samples were collected from the healthy children under 15 years old who came from the border areas of Myanmar and Yunnan Province, virus isolation and sequencing were conducted for all the 271 samples. 6 strains of polioviruses (PVs) were detected from 271 stools with an isolation rate of 2.8%, which belonged to vaccine strains and 24 non-polioviruses (NPVs) were detected with an isolation rate of 8.9%. 24 NPVs belonged to human enterovirus group B (HEV-B) with 6 serotypes, HEV-A, HEV-C and HEV-D viruses were not isolated. Among them, 13 NPVs were E7 (54.17%) and 5 NPVs were E13 (20.83%). Our results showed that the enterovirus carrying rate in the border areas of Yunnan province was higher than the rate of routine acute flaccid paralysis (AFP) detection system. The HEV-B viruses were the only enteroviruses isolated. The phylogenetical analysis showed that Echovirus 7(E7) and 13 (E13) exhibited genetic polymorphism.
Adolescent ; Child ; Child, Preschool ; China ; epidemiology ; Enterovirus ; classification ; genetics ; isolation & purification ; Enterovirus Infections ; epidemiology ; virology ; Feces ; virology ; Female ; Humans ; Male ; Molecular Sequence Data ; Molecular Typing ; Rural Population

Molecular typing was conducted according to the reported method for one HBsAg positive carrier who had a physical examination in Yunnan Province. The S gene of this HBV sample was amplified by nested PCR and the PCR products were directly sequenced. Blast searching was done on the Genbank database and the sequence were compared with the HBV reference sequences in database. The phylogenetic tree was constructed. Homology analysis of nucleotide and smino acid were performed between the sequences from the sample and the reference sequences corresponding to HBV genotype A to I. Analysis of nucleotide and amino acid identities suggested that the sample belonged to HBV genotype I. The HBV genotype I is the first reported in China.
Adult ; China ; Genotype ; Hepatitis B Surface Antigens ; genetics ; Hepatitis B virus ; classification ; genetics ; Humans ; Male ; Phylogeny ; Polymerase Chain Reaction