Objective:To evaluate the clinical value of Truview~(TM)EVO_2 optic laryngoscope by comparing it with the Macintosh laryngoscope in patients receiving cervical vertebral surgery.Methods:One hundred patients scheduled for elective cervical vertebral surgery were enrolled in this randomized crossover study.After induction,the patients'glottis in group A (n=50)was displayed by Macintosh laryngoscope and the Cormack-Lehane(C/L)grade was recorded,and then optic laryngoscope was employed to display the laryngeal structure.The order of laryngoscopy attempts was reversed in group B(n= 50).Parameters recorded included demographics,airway assessment feat ures(BMI,thyromental distance,mandibular size,mouth opening,mallampati oropharyngeal scale,and neck movement),C/L grade,laryngoscopic force applied,duration of intubation, difficulties of laryngeal view and injury of upper airway.Results:There were no significant difference in demographics,airway assessment features,C/L grade and duration of intubation between the 2 groups,whereas the laryngoscopic force in group A was significantly lower than that in group B(P

The 125 strains of the symbiotic and epiphyte microorganisms were isolated from marine organisms (Sea cucumber, Sea urchin, Sea anemone, Sea actinia, Ulra, Sargassum, Undaria). Among them,21 strains of bacteria,8 strains of actinomycetes and 2 strains of fungi have shown to have antagonistic activity on bacterial or fungal growth. In the 21 strains of bacteria, 7 strains belong to Bacillus sp., 11 strains belong to Vibro sp., and 3 strains belong to Pseudomonas sp.. In the 8 strains of actinomycetes, 5 strains belong to Streptomyces sp., 3 strains belong to Micromonospora sp.. 2 strains of fungi belong to Penicillum sp..

To silence the expression of K-RASAsn12 in human pancreatic cancer cell line by vector-based RNAi(RNA interference) technique,two single-strand DNA sequences encoding mutant-specific shRNA (short haipin RNA) for K-RASAsn12 were synthesized and then inserted into pSilenCircle. The recombinant plasmid was called pSC-K-RASAsn12. According to the same method, pSC-GFP encoding shRNA for GFP was gained. Both recombinant plasmids were transfected into human pacreatic cancer cell line AsPC-1 and BxPC-3. The expression level of K-RASAsn12 was detected by semi-quantitative RT-PCR and Western blot. The result indicated that the recombinant plasmid edcoding mutant-specific shRNA for K-RASAsn12 can inhibit significantly the expression of K-RASAsn12 without affection of wild-type K-RAS(K-RASWT)in Human Pancreatic Cancer Cell Line.

Objective To analyze the efficacy and safety of losartan in the treatment of massive proteinuria in kidney transplant recipients.Methods All of the 82 patients were randomized in two groups:losartan group and control group(amlodipine group).Both of the groups were divided into two different subsets according to blood pressure control Twenty-four-hour proteinuria,serum creatinine,blood pressure and adverse effects were observed.Results Losartan and amlodipine had the similar effects on blood pressure control The 24-h proteinuria in losartan group at the end of the study was significantly lower than that at the baseline,and there was significant difference between the losartan blood pressure control subset and the losartan blood pressure un-control subseL The effective rate and significant effective rate in losartan group for massive proteinuria were higher than in control group.Conclusion T Losartan can be effectively and safely used for the treatment of massive proteinuria in renal transplant recipients independent of blood pressure.

Objective To confirm the distribution of high arsenic drinking water and the situation of endemic arsenism in Hubei Province, to provide reference basis for prevention and control of endemic arsenic disease. Methods Using typical investigation and sample investigation in 2006 and 2007, the arsenic content of water was detected sampled from 19 counties(cities or communities). And those water samples which were close to or exceeded the stipulated standard were rechecked by the national standard method. Furthermore, the situation of endemic arsenism was investigated in the cities having high arsenic contents of water. Results In 2006,10 028 water samples of 446 villages in 6 counties (cities or communities) were tested, the wells of high arsenic (> 0.05 mg/L) were found in 5 counties (cities or communities) and the proportion of the well that exceeded stipulated standard was 5.29%(530/10 028); In 2007,19 086 water samples of 1282 villages in 17 counties(cities or communities) were tested, the wells of high arsenic were found in 11 counties(cities or communities), and the proportion of the well that exceeded stipulated standard was 1.74%(333/19 086). In these two years, 29 114 water samples were tested, in which 863 water samples were exceeding the stipulated standard. The 2.96% of total wells exceeded stipulated standard and mainly distributed in 179 villages of 12 counties(cities or communities). And the highest arsenic content of water sample was 2.012 mg/L. In the endemic arsenism area, 2 critical, 1 moderate and 1 mild arsenism patients had been found. Conclusions The water of high arsenic content are scattered in Hubei Province and the situation of endemic arsenism disease is mild. Improving water aiming at decreasing arsenic and establishing patient files should be carried out immediately.

Objective To compare the diagnostic value of myocardial perfusion imaging (MPI) and 64 multi-slice spiral CT (64-MSCT) for coronary artery disease (CAD). Methods Fifty-two patients with suspected or known CAD were included in the study. Each patient underwent both stress and rest MPI,MSCT as well as conventional coronary angiography (CAG) within 1 month. The stress and rest MPI were scored by a 5-grade criteria (0 ～ 4) based on 17 coronary artery segments. The difference between summed stress and rest scores ＞ 1 was defined as myocardial ischemia. Stenosis in one main vessel or one main branch of the main vessel ≥50% was defined as myocardial ischemia by MSCT. CAG was used as the reference for comparison. Statistical analysis was performed using SPSS 13. 0 software. Kappa value was used to test the accordance of MPI and MSCT results. X2 test was used to evaluate the difference between MPI and MSCT results. Results The patient-based sensitivity, specificity, positive and negative predictive values and accuracy of MPI and MSCT for the diagnosis of CAD were 86.7% (26/30), 77.3% ( 17/22),83.9% (26/31), 81.0% ( 17/21), 82.7% (43/52) and 83.3% ( 25/30), 86.4% ( 19/22), 89.3%( 25/28), 79.2% ( 19/24), 84.6% (44/52), respectively. The vessel-based sensitivity, specificity, positive and negative predictive values and accuracy of MPI and MSCT were 74.5% (38/51), 81.0% (85/105 ), 65.5% (38/58), 86.7% ( 85/98), 78.8% ( 123/156 ) and 90.2% (46/51 ), 88.6% ( 93/105 ),79.3 % (46/58), 94.9% (93/98), 89.1% ( 139/156), respectively. There was no statistically significant difference between MPI and MSCT for either patient or lesion-based diagnosis (X2 =0.44, 0.21, both P ＞0.05 ). 96.0% (24/25) patients with both abnormal MPI and MSCT positive were valified by CAG while 83.3% (15/18) patients with both MPI and MSCT negative were excluded by CAG. Conclusions Both MPI and MSCT are reliable diagnostic modalities for CAD. They also provide complementary diagnostic value to each other.

OBJECTIVEFebrile seizure is a very common emergency in children. Although researchers home and abroad constantly pay close attention to studies on brain damage and lesion possibly caused by febrile seizure, studies of effects on motor, behavior, spatial learning and memory are relatively seldom. In our study, Sprague-Dawley rats were utilized for the purpose of the exploration of effects of febrile seizures on their motor, behavior, spatial learning and memory.

METHODSSixty 21-day-old male Sprague-Dawley rats, weighing (50 +/- 5) g were divided randomly and equally into febrile seizure group (FS), febrile control group (FG) and normal control group (NG). Febrile seizure animal model was induced by hyperthermal bath with 45 degrees C water. Febrile seizure was induced twice a day, thus ten times within five days in FS group. Rats of FG group were immersed in the same hyperthermal water for 2 minutes. Nothing special was performed on NG group. The abilities of motor and behavior of every rat in these 3 groups were tested in inclined plane test (IPT), overhanging test (OHT) and open field test (OFT) to show their varieties. Furthermore, Morris water maze was applied to evaluate the effects by febrile seizure on spatial learning and memory in rats during the place navigation test and spatial probe test.

RESULTSIn the present experiments, febrile seizures were altogether induced 192 times with the mean latency being (4.25 +/- 0.98) minutes and the mean duration being (1.06 +/- 0.59) minutes. The experiments confirmed that multiple febrile seizures could lead to decreases of abilities in all tests in which analysis of variance indicated that there were significant differences between febrile seizure group and the other two (P < 0.01). In inclined plane test, the turning ability of the rats was weakened. The mean turning time was (9.1 +/- 2.6) seconds for FS, (5.3 +/- 2.1) seconds for FG and (5.3 +/- 2.0) seconds for NG. In overhanging test, the overhanging time was shortened: (33.4 +/- 18.1) seconds for FS, (50.1 +/- 20.3) seconds for FG and (59.0 +/- 20.7) seconds for NG. In the open field test, the rats became less active with the scores (5.1 +/- 2.0) for FS, (10.4 +/- 3.0) for FG and (13.2 +/- 2.3) for NG. Meanwhile, the authors discovered the decreases of the abilities of spatial learning and memory in rats caused by febrile seizures many times. In the place navigation test, the mean escape latency for the rats' looking for hidden platform was prolonged; the efficiency of their search strategy decreased; the swimming time the animals spent in platform region decreased [(44.02 +/- 5.25) seconds for FS, (51.75 +/- 5.28) seconds for FG and (57.07 +/- 5.36) seconds for NG; analysis of variance, P < 0.01.]; the number of times they crossed the platform area decreased [(6.07 +/- 1.77) times for FS, (9.25 +/- 2.07) times for FG and (11.34 +/- 2.37) times for NG; analysis of variance, P < 0.01]; the percentage of their swimming time fell (36.68% for FS, 43.13% for FG and 47.56% for NG).

CONCLUSIONThe experiments confirmed that multiple febrile seizures could result in damage and lesion of motor, behavior, spatial learning and memory in rats.

Animals ; Male ; Maze Learning ; physiology ; Memory ; physiology ; Motor Activity ; physiology ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Seizures, Febrile ; physiopathology ; Spatial Behavior ; physiology

This study was aimed to investigate the efficiency of modified methylation-specific polymerase chain reaction i.e. nested methylation-specific polymerase chain reaction, used to detect the promoter methylation of p16 gene in six hematological malignant cell lines, and to explore the application in selection of hematological malignant cell lines with promoter hypermethylation, and make them to be an idel cell models for studying the relationship between gene methylation and expression. DNAs were denatured by NaOH and then were subjected to bisulfite modification and a nested-MSP was used to amplify the promoter region, nested MSP product of p16 gene promoter was analyzed and sequenced. The results showed that the hypermethylation of p16 gene was detected in CA46 and U266, however, Molt4, K562, HL-60 and Jurkat cell lines were unmethylated. In conclusion, p16 gene methylation in hematological malignant cell lines can be perfectly detected by nested-MSP method, which is simple, sensitive and specific for screening all kinds of hematological malignant cell lines with p16 gene methylated.
Base Sequence ; Cell Line, Tumor ; DNA Methylation ; Genes, p16 ; HL-60 Cells ; Hematologic Neoplasms ; genetics ; pathology ; Humans ; K562 Cells ; Lymphoma ; genetics ; pathology ; Molecular Sequence Data ; Polymerase Chain Reaction ; methods ; Promoter Regions, Genetic ; genetics ; Sequence Analysis, DNA

The aim of the present study was to investigate the effect of a short-term (3-day) simulated microgravity with and without daily dorsoventral gravitation (-G(x)) for 1 h on myogenic tone and vasoconstrictor responsiveness of the middle cerebral artery and mesenteric third-order small artery in rats. The tail-suspension (SUS) model was used to simulate cardiovascular deconditioning due to microgravity. Daily restoring to normal standing (STD) posture for 1 h was adopted to provide -G(x) as the countermeasure. Segments of middle cerebral artery and mesenteric third-order small artery were isolated and cannulated. Vascular diameters in response to increased intraluminal pressure (from 20 mmHg to 120 mmHg, by 20 mmHg steps) of isolated arteries under no-flow conditions were recorded by a Pressure Myograph System in both physiologic salt solution (PSS) (active diameter, Da) and calcium-free PSS (passive diameter, Dp). The myogenic tone was calculated by (Dp-Da)/Dpx100%. Vasoconstrictor responsiveness of the isolated middle cerebral artery to serotonin and that of small mesenteric artery to phenylephrine were assessed in the PSS under an intraluminal pressure of 40 mmHg. The results showed that SUS induced an enhancement of the myogenic tone and vasoconstrictor responsiveness in the isolated middle cerebral artery but a depression of those in the small mesenteric artery. Daily STD for 1 h prevented the depression of myogenic tone and vasoconstrictor responsiveness in the small mesenteric artery, but did not prevent the functional enhancement in the middle cerebral artery. These data suggest that a short-term simulated microgravity may result in different alterations in the function of the cerebral artery and the resistance vessel in the hind-body. Moreover, only the decrease of function in these resistance vessels, not in the cerebral arteries, can be prevented by such a countermeasure of daily STD for 1 h.
Animals ; Cerebral Arteries ; pathology ; Hindlimb Suspension ; Mesenteric Arteries ; pathology ; Pressure ; Rats ; Serotonin ; pharmacology ; Vascular Resistance ; Vasoconstriction ; Weightlessness Simulation

OBJECTIVETo evaluate the effects of Shengli capsules on the sexual ability of normal and castrated male rats.

METHODSShengli capsules were given by intragastric administration to 100 experimental male rats at different doses of 0.35, 0.70 and 1.40 g / kg. Data were collected and analyzed, including capture latency period, times of capture, sexual endurance and times of ejaculation, to assess the effects of Shengli capsules on the sexual ability of the rats. The Castrated Animal Impotence Model was employed to determine the erectile latency period and the function parameters of the preputial gland, seminal vesicle and prostate, so as to test the effects of Shengli on the development of the rats'sexual organs.

RESULTSShengli was proved to be effective in shortening copulation latency in the dose groups of 0.35, 0.70 and 1.40 g / kg (P < 0.01), increasing significantly the frequency of capture in the high- and low-dose groups of 0.35 and 1.40 g / kg (P < 0.05), reducing the latency period to erection in the low-dose group of 0.35 g / kg, and blocking the shrink of the seminal vesicle and prostate in the medium-dose group of 0.70 g / kg.

CONCLUSIONShengli is significantly effective in enhancing the sexual ability of male rats: it can boost libido, increase erection frequency and improve sexual performance. However, further studies have yet to be done on its action mechanisms.

Animals ; Capsules ; Copulation ; drug effects ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; pharmacology ; Female ; Male ; Orchiectomy ; Ovariectomy ; Penile Erection ; drug effects ; Rats ; Rats, Sprague-Dawley ; Sexual Behavior, Animal ; drug effects