Objective To explore the effect of salubrinal (sal,an endoplasmic reticulum stress inhibitor) on radiosensitivity of human head and neck squamous carcinoma cells (HNSCC).Methods Cells were divided into two groups of sal treatment and its control.For drug treatment group,cells were treated with 10 mmol/L sal for different time (12,24,36 h) and then irradiated.The levels of a core protein GRP78 of endoplasmic reticulum stress (ERS) in HNSCC (KB,Fadu,and Detroit 562 cells)were analyzed by Western blot assay at different time (0,20 min,1 h,3 h,6 h,12 h,24 h and 48 h) after irradiation.Cell survival was measured with colony formation assay.Results Western blot assay revealed that the protein levels of GRP78 in three kinds of HNSCC significantly increased from 20 min to 1 h and peaked at 3 h after radiation (t =12.72,13.37,18.31,P ＜ 0.05).Compared with the control group,treatment of cells with sal decreased GRP78 protein levels (t =14.25,5.34,3.12,P ＜ 0.05) in three cell lines and also significantly enhanced radiation damage and reduced cell viability.The sensitization enhancement ratios (SER) of sal in three cell lines were 1.16,1.05 and 1.06,respectively.Conclusions Rradiosensitivity of HNSCC could be effectively enhanced by sal treatment.

Acupuncture Therapy ; Aged ; Female ; Humans ; Radiotherapy ; adverse effects ; Tonsillar Neoplasms ; radiotherapy ; Xerostomia ; etiology ; therapy

Objective To investigate the protective effects of extract of Periplaneta americana (APA) against carbon tetrachloride (CCl4)-induced hepatic fibrosis in rats. Methods Seventy SD rats were divided into five groups:normal con-trol group (C), model control group (M), extract of APA 1 group (APA1), extract of APA 2 group (APA2) and reduced glutathi-one group (R). The liver fibrosis model was induced by injecting 40%CCl4-olive solution subcutaneously for seven weeks in M, APA1, APA 2 and R groups. Drugs were given at the same time. Rats were killed at 7-week (C, M, APA1 and R groups), and were killed at 9-week (APA2 group). The serum values of transaminase (ALT, AST), albumin (ALB), hyaluronic acid (HA) and laminin (LN), and hepatic inflammation and fibrosis were detected respectively. The expressions of apoptotic relat-ed gene Bcl-2 and Bax protein in central veins and portal areas of hepatic lobules were detected by immunohistochemical method. Results Rats showed poor nutritional status, and significantly increased transaminase, HA and LN in M group, but the serum level of ALB was significantly lower than that in C group. There was extensive necrosis of liver cells, obviously fi-brosis or cirrhosis in model rats’liver tissues. The serum contents of ALT, AST, HA and LN were significantly decreased, the serum level of ALB were significantly increased in APA1,APA2 and R groups (P<0.05). There were complete hepatic lobule and no obvious fibrous tissue hyperplasia in liver biopsy of APA1 and R groups. The values of Bcl-2/Bax proteins in central vein of liver tissues were significantly higher in APA1,APA2 and R groups than those of M group (P<0.05), but the ratio of Bcl-2/Bax was lower in periportal area of liver tissues (P<0.05). There were significantly higher body weight and ALB levels in APA1 group than those in R group (P<0.05). The level of transaminase was slightly higher in APA1 group than that of R group. The degeneration of liver cells was found mostly in R group. Conclusion The extract of Periplaneta americana has a role in protecting liver cells, inhibiting the progression of hepatic fibrosis, and improving the nutritional sta-tus of trial rats.

Objective To study the effect of solution focused theory on improving the sleep quality of ACS patients with clinical pathway.Methods 100 ACS patients with clinical pathway in Tangshan Gongren hospital from September 2010 to January 2011 were selected as study objects,and they were randomly divided into the control group(51 cases)and the intervention group(49 cases).Then the sleep quality was assessed during the first 24 hours being admitted and on the second and forth week after the intervention with the Athens Insomnia Scale(ASI).Results At the second week after intervention,4 items of the ASI Score of the observation group were different from the control group significantly.The 4 items were nighttime sleep disruption,waking up early,evaluation of total sleep quality,effect on the day of emotion.On the forth week after intervention,only the item of effects on daytime function was not different from the control group significantly,the scores of other 7 items were significantly different from those of the observation group.Conclusions The effect of solution focused theory in improving the sleep quality of ACS patients with clinical pathway is significant,and it plays an active role in improving the state of disease.

The concept is cell of the theory. Starting from the concept, is the first and important step in building the modern basic theory of traditional Chinese medicine. Based on the early thought of Changes from phenomenon description to entity elucidation, we firstly introduce conceptual change in this paper and point out its basic meaning and role. To accurately apply the new concept, we have analyzed and demonstrated the concept and its expression object, the concept words' expression forms, as well as the concept explanatory power in details, and pointed out the problems because of ignoring these recognition in researching the concept of chinese medicine and its solutions. We have summarized the laws of the international scientific community realizing the conceptual change focus on the object, explore the unknown, propose new knowledge. and proposed the definition of conceptual change of the basic theory of traditional Chinese medicine. According to preliminary findings we have generalized the goal and standard to achieve the conceptual change of the basic theory of traditional Chinese medicine and gave examples of proof. As such we have draw an conclusion: the concepts of the basic theory of traditional Chinese medicine form the scientific concepts of the modern basic theory of traditional Chinese medicine through conceptual change, and thus guiding the theory, teaching and thinking reform of the Chinese medicine.

To understand the genetic origin and variation of porcine epidemic diarrhea virus (PEDV) prevailing in Henan province,a total of 22 PEDV positive samples from suckling piglets with severe diarrhea were collected from 16 pig farms and amplified by RT-PCR.ORF3 genes were then cloned into pMD18-T vector and sequenced.The result of sequencing showed that the length of ORF3 genes all were 675 bp which encoded 224 amino acids.The strains in this study had eight amino acid substitutions when compared with CV777 strain.The nucleotide homologies of the 22 strains were 95.9％-100％ and amino acid homologies were 96.4％-100％.By comparing with those of European strain CV777 and vaccine strain truncated CV777,the nucleotide homologies were 97.1％-97.9％ and 94.8％-95.4％,respectively.Based on the phylogenetic relationship of ORF3 genes,the PEDV field strains and PEDV reference strains could be divided into two groups,and all the field strains identified in this study belong to group 2.It suggested that prevalent PEDV strains in this study seem to be closely related to Henan isolates in previous years,domestic strains,Janpanese strains,American strains as well as Korean strains but differ genetically from European strains or vaccine strains used in China.This experiment analyzed the ORF3 gene sequence features in prevailing of Henan region in recent years,which provides a new support of epidemiology study and protein function research of PEDV ORF3 gene.

The aim of this project is to establish a fibroblast growth factor-21 (FGF-21) signaling pathway targeted cell model, for screening a class of FGF-21 receptor agonists as anti-diabetic candidates. FGF-21 requires beta klotho transmembrane proteins as co-receptor for the activation of tyrosine kinase FGF receptor (FGFR) signaling, thereby activating a series of intracellular signaling pathways and regulating gene transcription for glucose metabolism. Firstly a recombinant plasmid expressing co-receptor beta klotho and EGFP reporter genes was constructed. After introducing the recombinant plasmid into package cells, the cell culture supernatant was used to infect 3T3-L1 cells, which were then screened for stably expressing beta klotho gene. Administration of FGF-21 increased the expression of GLUT1 and stimulated GLUT1-mediated glucose uptake. This novel cell model can be conveniently used in high-throughput drug screening of FGF-21 or FGF-21 analogues.

In order to develop a combined live vaccine that will be used to prevent against porcine parvovirus (PPV) and Pseudorabies virus (PRV) infection, the VP2 gene of PPV was inserted into the transfer vector plasmid pG to produce the recombinant plasmid pGVP2. The plasmid pGVP2 and the genome of PRV HB98 attenuated vaccine were transfected by using lipofectamine into swine testis cells for the homologous recombination. The recombinant virus rPRV-VP2 was purified by selection of green fluorescence plaques for five cycles. 6-week-old female Kunming mice were immunized intramuscularly with attenuated PRV parent HB98 strain, commercial inactivated vaccine against PPV, recombinant virus, DMEM culture solution. The injections were repeated with an equivalent dose after 2 weeks in all of the groups, and then challenged with the virulent PRV NY strain at 7 weeks after the first immunization. The recombinant virus rPRV-VP2 was successfully generated, and the recombinant virus could effectively elicite anti-PPV and PRV antibody and significant cellular immune response as indicated by anti-PPV ELISA and HI, PRV-neutralizing assay and flow cytometry. The challenge assay indicated that recombinant virus could protect the mice against the virulent PRV challenge. These results demonstrated that the recombinant virus can be a candidate recombinant vaccine strain for the prevention of PRV and PPV.
Animals ; Antibodies, Viral ; immunology ; Antigens, Viral ; administration & dosage ; genetics ; immunology ; Capsid Proteins ; administration & dosage ; genetics ; immunology ; Female ; Gene Expression ; Genetic Vectors ; genetics ; metabolism ; Herpesvirus 1, Suid ; genetics ; metabolism ; Mice ; Parvovirus, Porcine ; genetics ; immunology ; Swine ; Swine Diseases ; immunology ; prevention & control ; virology ; Viral Vaccines ; administration & dosage ; genetics ; immunology

Objective To compare the accuracy of jugular venous oxygen saturation (SjvO2),somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs) in estimation of the occurrence of intraoperative cerebral ischemia in patients undergoing clipping of intracranial aneurysm.Methods Forty-three ASA Ⅰ or Ⅱ patients of both sexes,aged 18-64 yr,with a body mass index of 20-25 kg/m2,undergoing clipping of intracranial aneurysm,were studied.Anesthesia was induced with sufentanil,rocuronium and propofol.The patients were tracheal intubated and mechanically ventilated.Anesthesia was maintained with remifentanil and propofol.Blood samples were taken from the jugular bulb for detection of SjvO2 before aneurysm clipping or temporary occlusion of parent artery and at 1,3,10,20 and 30 min after clipping aneurysm or temporary occlusion of parent artery.The amplitude and latency of SSEPs and MEPs were recorded simultaneously.The occurrence of cerebral ischemia estimated by SjvO2,SSEPs and MEPs was recorded.The condition of nerve defect was recorded within 3 days after operation and the gold standard of cerebral ischemia was defined as the occurrence of nerve defect.Results Among 43 patients,14 cases were diagnosed as having brain ischemia.The sensitivity and specificity of SjvO2 in estimation of the occurrence of intraoperative brain ischemia were 71％ and 93％,respectively (P ＜ 0.01).The sensitivity and specificity of SSEPs in estimation of the occurrence of intraoperative brain ischemia were 71％ and 62％,respectively (P ＜ 0.05).When the diagnostic criterion of cerebral ischemia was defincd as a decrease in the amplitude of MEPs or prolongation of the latency MEPs,the sensitivity and specificity of MEPs in estimation of the occurrence of intraoperative brain ischemia were 79 ％ and 52 ％,respectively (P ＞ 0.05).When the diagnostic criterion of cerebral ischemia was defined as a loss of the amplitude of MEPs,the sensitivity and specificity of MEPs in estimation of the occurrence of intraoperative brain ischemia were 57％ and 93％,respectively (P ＜0.05).Conclusion The sensitivity of SjvO2 and SSEPs in estimation of the occurrence of intraoperative brain ischemia is higher,however,the specificity of SjvO2 and MEPs is higher,indicating that SjvO2 is a reliable criteria for estimation of the occurrence of intraoperative brain ischemia in patients undergoing clipping of intracranial aneurysm.

Objective To ummarized the clinical characteristics of lactic acidosis combined with hypoglycemic coma,diabetic ketoacidosis and hyperkalemia,so to improve the physician's treatment ability by summary the clinical feature of lactic acidosis combined with hypoglycemic coma,diabetic ketosis and hyperkalemia.Methods Analyzed the clinical characteristics and disease development of one case with lactic acidosis combined with hypoglycemic coma,diabetic ketoacidosis and hyperkalemia,and reviewed literature.Results The patient had hypoglycemia and acidosis at the same time due to taking phenformin and glibenclamide.After 2 days,the patient was better through correcting acidosis,intravenous fluid therapy,lowering blood potassium and controlling blood glucose.Conclusion Because acidosis caused the potassium transfer from intracellular to extracellular,the latter leads to hyperpotassemia,lactic acidosis caused by phenformin should be treated with intravenous fluid therapy,correcting acidosis.