Rheological properties of poloxamer 407 (brand named Pluronic F127) were examined by changing shear rate, temperature and the recovery properties of apparent viscosity after heating for several times. The results indicated that poloxamer 407 aqueous solution showed a Newtonian behavior at a low concentration while it might be a pseudoplastic fluid when the concentration reached a certain point. The thixotropy and the sol-gel transition temperature decreased with increasing the concentration (it could be an in situ gel at body temperature when the concentration of poloxamer 407 up to 15.25%). The results that obtained from the theological data would be useful in the application of poloxamer 407 such as in situ gel preparation.

Objective There have been few research on the relationship between expression of HDAC4 and chemotherapy resistance in human lung adenocarcinoma.The present study aims to investigate the expression and clinical significance of HDAC4 in human lung adenocarcinoma tissues.Methods We selected 72 tissues in lung adenocarcinoma patients with docetaxel-resistant from January 2006 to December 2007 in Department of Oncology and Thoracic Surgery, Nanjing General Hospital of Nanjing Military Region, then evaluated the recent efficacy according to the RECIST criteria and divided the tissues into sensitive(n=32, included complete remission and partial remission) and insensitive(n=40, included stability and progress) groups.The expression of HDAC4 in tissues≥the HDAC4 optimal relative expression cut-off value(78.7) was high level HDAC4 group(n=35), otherwise it was low level HDAC4 group(n=37).QRT-PCR analysis was performed to detect the HDAC4 expression levels in sensitive group and insensitive group.Analyzed the progression free survival in high level HDAC4 group and low level HDAC4 group.Results The expression of HDAC4 was significantly higher in the insensitive group compared with the sensitive group [(1.42±0.30) vs (0.60±0.15), P<0.01].The median progression free survival was significantly shortened in the high level HDAC4 group compared with the low level HDAC4 group (10.2 months vs 5.8 months, P<0.05).ConclusionThe expression of HDAC4 increased in docetaxel-resistant lung adenocarcinoma patients, and it is expected to be a predictive indicator of the resistance of docetaxel.

Objective Human lung adenocarcinoma SPC-A1/DTX cells have a higher radioresistance than SPC -A1cells. This study was to investigate the role of Aurora-An/uclear factor κB ( NF-κB) in the radioresistance of human lung adenocarcinoma SPC-A1/DTX cells and its possible molecular mechanisms . Metho ds We collected human lung adenocarcinoma SPC-A1 and SPC A1/DTX cells and divided them into four groups:sh-Aurora-A ( Aurora-A plasmid interference ) , sh-NC, NF-κB inhibition ( SPC-A1/DTX +NF-κB inhibitor ) , and DMSO control .We measured the in vitro radio-sensitivity of the cells by MTT assay , determined their proliferation ability by cloning assay , and detected the mRNA and protein expressions of the target genes by real -time quantitative RT-PCR and Western blot , respectively . Results The 50% effective doses ( ED50 ) of the SPC-A1 and SPC-A1/DTX cells on radiotherapy were (6.5 ±0.3) and (12.8 ±0.6) Gy, respectively, with statisti-cally significant difference between the two groups ( P <0.01 ) .In the radiation doses of 0, 2, 4, and 6 Gy, the numbers of the cloned SPC-A1 cells were 345 ±20 , 252 ±22 , 170 ±15 , and 81 ±10 , sig-nificantly lower than those of the cloned SPC -A1/DTX cells (402 ±21, 370 ±18, 301 ±16, and 252 ±15) (P<0.05).The protein and mRNA expressions of Aurora-A were remarkably higher in the SPC-A1/DTX than in the SPC-A1 cells (1.00 ±0.08 and 1.00 ±0. 06 vs 0.49 ±0.03 and 0.22 ±0.02, P<0.05).MTT assay showed a higher ED50 in the sh-NC than in the sh-Aurora-A cells ([11. 8 ±0.5] vs [7.1 ±0.3] Gy, P<0.01) as well as in the control than in the NF-κB inhibition group ([11.7 ±0.5] vs [6.1 ±0.3] Gy, P<0.01).Inhibition of Aurora-A increased the expression of IκBa by 2.18 ±0.32 times (P<0.01) and that of NF-κB by 0.24 ±0.03 times (P<0.01).The expressions of IκBa (1.00 ±0.05) and NF-κB (1.00 ±0.04) were significantly lower in the parent strains of SPC-A1 than 0.65 ±0.04 and 2.18 ±0.15 in the drug-resistant strains of SPC-A1/DTX (P<0.01). Conclusi on Auro-ra-A/NF-κB is involved in the radioresistance of human lung adenocarcinoma SPC-A1/DTX cells.

Cardiovascular diseases(CVDs) are a major cause of morbidity and mortality in the world.So far,there has been substantial progress toward understanding the pathophysiology and treatment of CVDs.There are multiple cell signaling cascades,some of which are beneficial or compensatory and others deleterious.The balance between these pathways determines the outcome as a diseased or non-diseased state.Protein phosphorylation,which is mediated by enzymes,called protein kinases,is a major mechanism for transducing external stimuli into intracellular signals.Electively targeting of signaling pathways using protein kinase inhibitors would have a potential advantage over receptor blockers.By now,there are types of protein kinase inhibitiors available for treating several diseases.The success of kinase inhibitors in cancer treatment has strongly supported application in the treatment of CVDs.Here,we will review several kinds of protein kinases as potential targets for CVDs and some difficulty in identifying a protein kinase as a putative therapeutic target for CVDs.

Cardiovascular diseases (CVDs) are a major cause of morbidity and mortality in the world. So far, there has been substantial progress toward understanding the pathophysiology and treatment of CVDs. There are multiple cell signaling cascades, some of which are beneficial or compensatory and others deleterious. The balance between these pathways determines the outcome as a diseased or non-diseased state. Protein phosphorylation, which is mediated by enzymes, called protein kinases, is a major mechanism for transducing external stimuli into intracellular signals. Electively targeting of signaling pathways using protein kinase inhibitors would have a potential advantage over receptor blockers. By now, there are types of protein kinase inhibitiors available for treating several diseases. The success of kinase inhibitors in cancer treatment has strongly supported application in the treatment of CVDs. Here, we will review several kinds of protein kinases as potential targets for CVDs and some difficulty in identifying a protein kinase as a putative therapeutic target for CVDs.

Objective To study the incidence of depression in essential tremor (ET) and associated factors. Methods Depression in 62 ET patients and 60 healthy subjects as control was evaluated by means of Hamilton Depression Scale ( HAMD ) , as well as Fahn-Tolosa-Marin Tremor Rating Scale (TRS) and Pittsburgh Sleep Quality Index (PSQI). Results Fifty-three point two percent(33/62) of ET patients and 11.7% (7/60) of healthy subjects were found to have at least mildly depression (HAMD score of 8 or higher), 35. 5% (22/62) of ET patients and 8. 3% (5/60) of healthy subjects fell into the mildly-to-mederately depression (HAMD score between 8 and 20 ), 17.7% (11/62) of ET patients and 3.3% (2/60) of healthy subjects were classified into moderately-to-severely depressed range (HAMD score between 21 and 35). There were statistical differences in ET group and healthy subjects group (X2= 23.898, 13.043, 6.649, all P <0.01). Additionally, there were statistical differences in anxiety/ somatization (t=-6.747, P<0.01), cognitive impairment (t=-2.017, P=0.05), block(t= -4.145, P<0.01), sleep disorders (t=-4.500, P<0.01) and despair (t=-3.591, P<0.01) between depression group and non-depression group. There were marked differences in PSQI total score ( t =-3.196, P=0.003 ), subjective sleep ( F1, t=-3.037, P=0.004), quality sleep latency (F2, t= -4.674, P<0.01) and sleep disturbances (F5, t=-2.594, P=0.013 ) between depression disorder group and non-depression disorder group. Meanwhile, the score of TRS, PSQI and sex were closely correlated with HAMD (β=0.589, P=0.000 ;β=0.469,P=0.000 ;β=0.256, P=0.027 ). Conclusions The incidence of depression is high in ET. Manifestation of depression are anxiety, reduced interest in work, sleep disorders, retardneas, inferiority complex, etc. The degree of symptoms relates to the severity of ET, sleep quality and gender.

This study aims to develop a liquid chromatography with tandem mass spectrometry (LC-MS/MS) method for the simultaneous determination of ivabradine and N-demethylivabradine in human plasma, and investigate effects of stable isotope labeled (SIL) internal standard (IS) on ivabradine. The analytes and IS were extracted from plasma by protein precipitation with acetonitrile, and chromatographied on a Capcell PAK C18 (100 mm x 4.6 mm, 5 μm) column using a mobile phase of methanol and 5 mmol x L(-1) ammonium acetate. Multiple reaction monitoring with electrospray ionization (ESI) was used in the positive mode for mass spectrometric detection. The effect of ivabradine isotope peak [M+H+3] + on IS and the effect of SIL IS purity on ivabradine were evaluated. An appropriate concentration of SIL IS was chosen to permit method selectivity and linearity of the assay over the required range. The standard curves were demonstrated to be linear in the range of 0.100 to 60.0 ng x mL(-1) for ivabradine, and 0.050 0 to 20.0 ng x mL(-1) for N-demethylivabradine. The intra and inter day precision and accuracy were within the acceptable limits for all concentrations. Besides, the interaction between IS and ivabradine did not impact the determination of analytes. This method was successfully applied to a pharmacokinetic study of hydrogen sulfate ivabradine sustained release tablets on Chinese healthy volunteers.

The aim of this review is to realize the significance of physical activity for colorectal cancer survivors, collect the common tools to assess colorectal cancer patients' physical activity, understand the current status and its influencing factors of colorectal cancer patients' physical activity as a reference to Chinese relevant research and provide a basis for carrying out medical or nursing intervention.

Objective To analyze and provide reference for developing clinical practice guidelines of ostomy care suitable for the domestic health care settings. Methods Content analysis method was used to analyze clinical practice guidelines searched from the Internet. Results A total of 13 clinical practice guidelines were included. All the guidelines were published between 2005 to 2016 without update. Four of them were evidence-based guidelines, the rest were not. A total of 21 items were identified as being related to ostomy care. Conclusions Although the existing clinical practical guidelines are instrumental to guiding clinical ostomy care practice, most of them were not evidence-based guidelines without high methodological quality. Meanwhile, some guidelines lack specific and updating recommendations for ostomy care, which may cause problems in ostomy care practice. What′s more, some recommendations may not suit for China because they were made in the foreign circumstance. Researchers and clinical nurses should develop local practice guidelines of ostomy care with consideration of the actual medical conditions in China and the best evidence.

Objective To observe the oral part of the facial artery and facial vein and to provide anatomical data for clinical applica-tion. Methods The origin, branches, course, diameter, position of oral part of facial artery and facial vein were observed on 32 fixed cada-ves (64 sides). Results The position relation between the facial artery and facial vein is non-constant. Measure the distance from inferior border of mandible to corner of the mouth, angulus mandibulae, mental protuberance midpoint. It is (5. 49 ± 0. 63) cm, (2. 50 ± 0. 89) cm and (6. 20 ± 1. 68) cm in the left side respectively, and (5. 69 ± 0. 72) cm, (2. 56 ± 1. 08) cm and (6. 85 ± 1. 86) cm in the right side re-spectively. The diameter of facial artery in inferior border of mandible is (0. 33 ± 0. 08) cm in the left side and (0. 38 ± 0. 07) cm in the right side;while the diameter of facial vein is (0. 40 ± 0. 12) cm in the left side and (0. 42 ± 0. 18) cm in the right side. The facial artery and facial vein are not concomitant and they are not asymmetry also. The position of superior labial artery arteries is constant, but the position of inferior labial artery arteries have more variations. Conclusion The branches, course, diameter and position of oral part of facial artery and facial vein have a number of variations. The superior labial artery arteries could be positioned more easily than inferior labial artery arter-ies. Being familiar with their distribution is of great importance for clinical application.