Bioreactors ; Humans ; Liver Failure, Acute ; therapy ; Liver, Artificial ; classification ; Sorption Detoxification ; instrumentation ; methods

Objective To study the effect of millimeter wave radiation on human hepatoma cell. Methods BEL7404 hepatoma cells were cultured in vitro and randomly divided into 4 groups: the control group, the group radiated by millimeter wave for 30 min, the group treated with Fluorouracil(5 FU), and the group radiated by millimeter wave and treated with 5 FU simultaneously at same time. The ability of 35.8 GHz millimeter wave to induce the apoptosis of hepatoma cell was evaluated by analyses of fluorescence microscopy, DNA fragmentation assay and flow cytometry assay. Results BEL7404 cells radiated by the millimeter wave had the typical characteristics of apoptosis. Comparaed with the control group [(3.21? 1.06)%], the apoptosis rates were higher in 30 min radiating or/and 5 FU groups[ (14.33? 2.66)%, (18.58? 2.57)%, (27.91? 3.66)%]. Poly adp ribose polymerase(PARP) was found to be cleavaged in all the cells in millmeter wave radiation or/and 5 FU groups. Conclusion Radiation of 35.8 GHz could induce apoptosis of BEL7404 cell in vitro, and could act synergistcally with 5 FU treatment.

Objective To study the expression of proliferating cell nuclear antigen (PCNA), CDK4 and P16 on rat hepatocellular carcinoma by millimeter wave radiation. Methods Fourty male Wistar rats were randomly divided into four groups. Group one to three were feeded by diethylnitrosamine (DEN). Group one was a tumor control group. In group two and three the liver was directly radiated by 35.8 GHz, 100 mW/cm 2 millimeter wave for 20 min, twice a week for 10 or 5 weeks. Group four was a normal control radiated group. Fourteen weeks later all rats were sacrificed to undergo serological test and immunohistochemical stain of liver. Results The serum levels of ? glutamyltransferase in group two and three were lower than that in group one. Adenocarcinoma was only existed in group one by histological examination of liver tissue. Other groups of DEN exposure only had basophilic and eosinophilic nodules. Liver tissue expression of PCNA and CDK4 in group two and three were significantly lower than in group one, but the expression of P16 in group two and three was higher than that in group one. Conclusions Radiation with millimeter wave can partially inhibit cell proliferation and suppress the DEN induced hepatocellular carcinoma in rats.

Objective The practical evaluation of Rosco Disk Diffusion method on the clinical antifungal susceptibility test for yeast-like fungi. Methods The Fluconazole susceptibility test was detected by Rosco Disk Diffusion method and NCCLS M27-A broth macrodilution method with 76 yeast-like fungus strains isolated from clinical specimens. Three standard strains were used as the quality control. Results Coincidence rate of the two methods was 90.8%,The sensitive strains detected by one method didn't show resistance in another detection method, and the resistant strains detected by one method yet didn't show sensivity in another.Conclusion Rosco disk diffusion method can be used in clinical detection instead of NCCLS M27-A broth macrodilution method.

Objective To study whether neuronal injury induced by platelet activating factor (PAF) was involved in NMDA /PSD 93 signaling pathway.Methods Primary cortex neurons culture were from wild type and PSD 93 knockout mice.Then the neurons were pretreated with 0.3 ?mol/L PAF for 24 hours, 5 ?mol/L BN52021, 10 ?mol/L MK-801, or 60 ?mol/L L-NAMA, respectively. The cells were stained with PI/Calcein for apoptosis detection. Varied protein expressions were also observed in the neurons by western blot. Proteins colocalized on neuraxon were detected by cell immunochemistry and confocol microscopy, and cGMP activity was measured by radioimmunoassay.Results (1) PSD 95, NR2A, and nNos except PSD 93 expressed in the cortex neurons from PSD 93 knockout mice. (2) PSD 93, NR2A and nNos colocalized on neurite. (3) Neurotoxicity and cGMP avtivity induced by PAF decreased in PSD 93 knockout cortex neurons.Conclusion NMDA/PSD 93 signaling pathway is involved in neuronal injury induced by PAF.

Objective To discusses the effect of different nursing methods on anastomotic healing after low colorectal surgery. Methods 60 patient with colorectal cancer undergoing low anastomosis were randomly divided into the experimental group and the control group with 30 cases in each.The experimental group adopted modified nursing care,while the control group received routine nursing care.The defecation times and incidence of complications were observed between the two groups.Results The defecation frequency of the experimental group was less than the control group,and the incidence of rectal stimulation sign,anastomotic fistula and obstruction was less in the experimental group.Conclusions Modifed nursing methods have certain effects on preventing postoperative complications of low colorectal anastomosis.

Adenoma, Sweat Gland ; pathology ; Humans ; Male ; Middle Aged ; Nose Neoplasms ; pathology

Objective To develop a simple,sensitive,and accurate method for the determination of shionone in rat plasma after administration of shionone.Methods The separation was developed by HPLC on a Waters shieldTM RP18 column (150mm × 3.9mm,5 μm) with a mobile phase composed of acetonitrile-0.05％ phosphoric acid water (98:2) at a flow rate of 1.0 mL/min.UV Detector was set at 200nm.Results The linear range of the standard curves was 0.043-1.720 μg/ml with the correlation coefficient of 0.995.The intra-and inter-day precisions were all below 10％.Conclusion The developed method can be successfully applied to the pharmacokinetic study.

Objective To investigate the response of astrocytes and neurons in the medullary visceral zone (MVZ) to neuropathic pain induced by the spared nerve injury (SNI, the tibial nerve and the common peroneal nerve were sectioned, while the sural nerve was intacted). Methods The SNI operation and sham operation (only incised the skin of thigh, but the tibial nerve and the common peroneal nerve did not cut) were performed in adult male Sprague-Dawley rats. The paw withdrawal mechanical threshold (PWMT) was measured at 10,20,30 days after operation. By using single or double immunofluorescent staining method,we investigated and measured that the mean fluorescent intensity (MFI) of anti-glial fibrillary acidic protein (GFAP, a marker of astrocytes) signal in the astrocytes, the mean member of Fos/ GFAP double labeled astrocytes and Fos / tyrosine hydorxylase (TH) double labeled neurons in MVZ after operation. Results As compared with control or sham groups, SNI induced that the PWMT became significant sensitivity and peaked at 20 days after SNI. The activated astrocytes revealed an activated morphology, the MFI of anti-GFAP signal markedly strengthened, the mean number of Fos/GFAP double labeled astrocytes and Fos/TH double labeled neurons in the nucleus of the tract solitarius (NTS) and the ventral lateral medulla (VLM) increased significantly and peaked at 20 days after SNI. Conclusion The neurons and astrocytes in MVZ were sensitively activated by SNI.

Animals ; Animals, Newborn ; Hypothyroidism ; genetics ; Myocardium ; metabolism ; RNA, Messenger ; genetics ; Rats ; Rats, Wistar ; Receptors, Thyroid Hormone ; genetics