This article presents a new digital haemoglobin meter.This device adopts HICN method recommended by WHO.Its unique designing of automate proofread zero circuit and automatic controlling in determination provids high accuracy and stability,handy and reliable,It can be widely used in the hospital chemical ex- amination laboratory,commue hospital,health station and related laboratory.

Robotic system helps surgeons in performing surgery. Currently Da Vinci system is the most popular. Da Vinci system has been used for the stomach and bowel diseases in 27 cases(18 cases of stomach and 9 cases of colon and rectum) in the Zhongshan Hospital, Fudan University. Accurate preoperative staging is crucial, and Da Vinci system is advantageous in lymph node dissection, preservation of nerve plexus, and complete resection of mesorectum. Adoption of gastrointestinal tract reconstruction technique should depend on the operation and experience in surgery. Though Da Vinci system has limitations and the cost is high, it is believed to be the future trend.
Digestive System Surgical Procedures ; methods ; Humans ; Robotics ; methods

Objective To explore the effect of transforming growth factor β1 (TGF-β1) on epithelial-mesenchymal transition in rat peritoneal mesothelial cells(RPMCs) and its mechanism.Methods Primary peritoneal mesothelial cells of SP rats were cultured in vitro. After synchronization for 24 h, RPMCs were randomly divided into 2 groups: Group A (control), Group B (TGF-β1, 10 μg/L). RPMCs were stimulated by 10 μg/L TGF-β1 for different time. The mRNA and protein expression levels of E-cadherin, α-smooth muscle actin (α-SMA) and collagenⅠwere measured by RT-PCR and Western blot, respectively. The protein expression level of total RhoA was measured by Western blot. Active RhoA was extracted by Plasma Membrane Protein Extraction Kit, and assessed by Western blot. Results TGF-β1 down-regulated mRNA and protein expression of E-cadherin in RPMCs, and upregulated mRNA and protein expression of α-SMA and CollagenⅠ. TGF-β1 stimulation elicited a robust increase in RhoA activity in a time-dependent manner. RhoA activity peaked at 1 h.Conclusion RPMCs can be transdifferentiated into myofibroblast under the effect of TGF-(β1,)and the mechanism may be related to the activation of RhoA associated signal pathway.

OBJECTIVE: To observe the protective effects of Corydalis ambailis migo total alkaloids (COAMTA) on cerebral ischemia/reperfusion injury in rats and to investigate its mechanism. METHODS: The effects of COAMTA on decapitated gasping mouse model and rat model of middle cerebral artery ischemia (2 h)/reperfusion (22 h) were observed. The neurological scale, cerebral infarcted volume and cerebral water content subjected to cerebral middle artery ischemia/reperfusion in rats were recorded. The activities of nitric oxide synthase (NOS) and superoxide dismutase (SOD) and the content of malondialdehyde (MDA) in the ratso brain were measured. Cell apoptosis in ischemic penumbral area was observed with light microscope in the method of terminal deoxynucleotidyl transferase mediated dUTP-biotin nick end labeling (TUNEL). RESULTS: The average gasping time of the mice (6.0 mg/kg or 9.0 mg/kg COAMTA) was significantly prolonged, the cerebral infarcted volume and cerebral water content of the rats (5.0 mg/kg or 7.5 mg/kg COAMTA) were significantly decreased, as compared with the control groups. The average activity of SOD in cerebral tissue of the rats (5.0 mg/kg or 7.5 mg/kg COAMTA) was significantly higher than that of the control groups, meanwhile, the average activity of NOS and the content of MDA declined significantly. The cell apoptosis in ischemic penumbral area of the rats (5.0 mg/kg COAMTA) was significantly inhibited as compared with the control groups. CONCLUSION: COAMTA can facilitate the protection against cerebral ischemia/reperfusion damage. The mechanism is related to inhibiting the activity of NOS and lipoperoxidation, increasing the activity of SOD and decreasing the neuronal apoptosis.

0.05).There was a significant difference in the percentage of malignant calcified nodules between the patients of 45 years and older with those younger than 45 years(39.2% and 69.3%,respectively;P

Objective To explore the associations of anxiety with optimism ,resilience and related demographic factors in lung cancer patients , and to provide a scientific basis for reducing the level of anxiety and improving the psychosomatic health. Methods A total of 130 lung cancer pa-tients from the department internal medicine of respiratory tumors in Liaoning Cancer Hospital&Institute were investigated by convenience sam-pling method from February 2013 to January 2014. The survey was anonymous. Finally,107 questionnaires were effective,and the effective rate was 82.307%. Results Among lung cancer patients,optimism and resilience were positively and significantly associated with anxiety. Physical ex-ercise had an effect on the anxiety symptoms. Conclusion Optimism and resilience have significant predictive value on the anxiety among lung cancer patients. It is important to encourage lung cancer patients to improve their psychological health ,so as to reduce their anxiety symptoms effec-tively.

Objective To investigate the safety and efficacy of technical modification for laparoscopic repair of giant hiatal hernias.Methods A total of 49 patients with giant hiatal hernia underwent modified laparoscopic repair by dissecting sac, closing hiatal, mesh placement and fundoplication from June 2010 to May 2014.The operation time, hospitalization time, postoperative complications, upper gastrointestinal imaging and improvement of postoperative symptoms were observed.Results The average operation time was (103.6 ±31.7) min(88-173min).The average length of post operation hospitalization was (4.2 ± 1.8) d (range,3-12d).Postoperative complication occurred in 4 patients,including pleural effusion (1 patient),respiratory failure (1 patient), difficulty in swallowing (2 patients)with complication occurrence rate being 8.2％ (4/49).No conversion or death occurred.The average time of follow-up was (28.3 ± 12.7) months (6-50 months) in 49 cases.During the follow-up, main symptoms were relieved and no recurrence was found by barium swallow.Conclusion Technical modification for laparoscopic repair of giant hiatal hernias is safe and effective.

Objective To explore the effect of hepatocyte growth factor (HGF)/c-Met signaling in doxorubicin (DOX) treatment of hepatocellular carcinoma (HCC). Methods Different biologic and genetic characteristics human HCC cell lines, Huh7, HepG2, MHCC97-L and MHCC97H were used in this experiment. Variation in c-Met mRNA expression level among different HCC cell lines was analyzed by RT-PCR. Western blot analysis was performed to detect c-Met and p-Met expression levels in these cell lines. CCK-8 experiment was carried to analyze the DOX sensitivity in various cell lines. t test and repeated measure analysis of variance were used for statistical analysis. Results Both c-Met and p-Met were overexpressed in MHCC97-L and MHCC97-H cell lines and these cell lines were resistant to DOX compared to Huh7 and HepG2. However, treatment of HGF in Huh7 and HepG2 cells activated c-Met signaling pathway and decreased the sensitivity of these two cell lines to DOX [inhibition rate: Huh7 (34.848 ±5.370) vs. (66.409±5.792)%, HepG2 (34.351±3.305) %vs. (62.308±5.453) %, both P=0.002]. Whereas administration of c-Met inhibitor in MHCC97-L and MHCC97-H cell lines significantly increased the sensitivity to DOX [inhibition rate: MHCC97-L (73.106 ±3.472) % vs. (13.636 ±4.097) %; MHCC97-H (64.444 ±4.006) % vs. (6.296 ±2.796) %, both P< 0.001]. Conclusion HGF/c-Met signaling pathway is related the treatment efficacy of DOX in HCC.

Objective To establish an in vitro isolation and culture system for hepatocellular carcinoma (HCC)-associated fibroblast (CAF) and identify based on its specific markers of CAF. Methods CAF was isolated from the tumor tissue of the HCC patients after hepatectomy, by digesting with collagenase enzyme, centrifugation and resuspension. The morphology of CAF was observed by electron microscopy. Immunofluorescence staining was performed for detecting α-SMA and fibronectin as well as other specific markers such as AFP on the surface of HCC cells and CD31 on the surface of vascular endothelial cells. On the basis of the study, the function work between CAF and HCC cell line Huh7, HepG2 was detected under co-culture system. Meanwhile, CCK-8 was used to observe the effect of CAF on the proliferation of Huh7 and HepG2 cells, and Transwell assay was used to analyze CAF effect on the invasion of Huh7 and HepG2 cells. Results Compared with the other cells, the morphological analysis showed that CAF was more elongated or spindle-shaped. Moreover, the cell size and the nucleus were larger than normal epithelial cells. Immunofluorescence staining revealed that the CAF surface specific markers including α-SMA and fibronectin were positive, and mainly were the cell membrane staining. The proliferation and invasion of Huh7 and HepG2 were significantly increased by CAF. The results show that the increasing percentage of cells in 24 hours between blank group and the experimental group was (63 ± 4) %, (78 ± 5) % and (69 ± 5) %, (81 ± 3) %respectively after co-culture with CAF, the difference was statistically significant (P<0.05). In transwell model, the number of cells in the blank group and the experimental group was (59.4 ± 3.1), (162.9 ± 3.9) and (104.8 ± 2.6), (166.4 ± 4.2), and the difference was also statistically significant (P< 0.05). Conclusion The isolated CAF from HCC enhances the ability of tumor's proliferation and invasion.

10.3969/j.issn.2095-4344.2013.26.008