Objective To investigate the effect of left lateral segmentectomy combined with fiber choledochoscope for hepatobiliary calculus.Methods Eighty-seven patients with hepatobiliary calculus who underwent hepatectomy from December,1998 to December,2008 were reviewed retrospectively.Forty-six patients underwent the section of common bile duct to remove calculus combined with left lateral segmentectomy and fiber choledochoscope( Group A),41 patients underwent left hepatectomy and section of common bile duct to remove calculus( Group B).The postoperative stone residual rate,complications and long-term outcome were compared between the two groups.Results The postoperative stone residual rate of either group was zero.Intraoperative bleeding ( 401.1 ± 180.4ml) ,operative times ( 202.5 ±36.6 rmin) of group A were significantly lower than those of the group B (515.9 ± 200.6ml and 257.3 ± 42.9min) ( P ＜ 0.001 and 0.01,respectively) .Hospital stays of group A was lower than that of group B,but this is no statistical significance ( P ＞ 0.05 ) .The incidence of postoperative complications were similar in the two groups( 15.2% v.s.24.4% ,P ＞ 0.05 ).The effective rates of the two groups were similar (91.3 % VS 92.7 %,P ＞ 0.05 ).Conclusions The long-term and short-term outcome of left lateral segmentectomy combined with fiber choledochoscope for hepatobiliary calculus is similar to that of left hepatectomy ,and can successfully shorten the hospital stay and reduce the hospital fee.

OBJECTIVETo analyze the differences between the bacterial diversities in the saliva of caries-free and caries-susceptible adolescents through polymerase chain reaction (PCR)-denaturing gradient gel electrophoresis (DGGE).

METHODSTwenty adolescent subjects aged 12-18 years were recruited and subdivided into two groups: caries-free adolescents (n = 10) and caries-susceptible adolescents (n = 10). Saliva samples were collected. Total DNA was isolated directly from each sample. A portion of the 16S rRNA gene locus was PCR-amplified by using universal primers. Microbial diversity was analyzed through PCR-DGGE.

RESULTSAnalyzing the DGGE profile, we found that the composition of the saliva microbiome exhibited great intra-individual differences; the average band numbers of the caries-free adolescent group and the caries-susceptible adolescent group were 32.5 ± 3.7 and 27.3 ± 3.4, respectively. The differences between the groups were statistically significant (P = 0.008). Shannon-Wiener's indexes of the caries-susceptible adolescent group and the caries-free adolescent group were 2.5 ± 0.2 and 2.6 ± 0.2, respectively, but the differences between the groups were not significant (P = 0.405). Clustering analysis results suggested that most of the samples in the same group clustered together; this observation showed a high community structure similarity.

CONCLUSIONThe microbial diversity and complexity of bacteria in saliva are significantly higher in caries-free adolescents than in caries-susceptible adolescents. During caries development, bacterial diversity in the saliva likely decreases.

Adolescent ; Bacteria ; Child ; DNA, Bacterial ; analysis ; Denaturing Gradient Gel Electrophoresis ; Dental Caries ; microbiology ; Dental Caries Susceptibility ; Humans ; Microbiota ; Mouth ; microbiology ; Polymerase Chain Reaction ; RNA, Ribosomal, 16S ; Saliva ; microbiology

Objective To investigate the effects of intra-articular hyaluronan(HA)injection on the expression of cartilage oligomeric matrix protein(COMP)in synovium of strenuous running rats,and investigate the possibility of predicting the effectiveness of HA based on COMP in synovium.Methods 36 healthy male Wistar rats were randomly divided into control group,strenuous running group and strenuous running group and HA injection group.Strenuous running group and HA injection group were intra- articularly injected with HA once a week for 5 consecutive weeks.The histological changes of synovium of knee joint was examined by H.E.staining and immunohistochemical expression of COMP in three groups after 6 weeks' strenuous running.Results Synovial inflammation was less severe in strenuous running and HA injection group than strenuous running group(t =7.15,P ＜0.01).The immunohistochemical expression of COMP in rats'synovium of knee joint in strenuous running and HA injection group was significantly lower than that in rats'synovium in strenuous running group(t = 6.30,P ＜ 0.01).Conclusions Intra- articular HA injection suppressed synovitis,and the expression of COMP in synovium could be used to predict the effectiveness of HA.

Pinellia ternata in traditional Chinese medicinal herbs,planted and wide application range,with great development value.Medicinal components of pinellia ternata have obviously anti-tumor effect.In this paper,the author summarized the research result of anti-tumor effect of medicinal components of pinellia ternata,sought for a proven foundation of anti-tumor mechanism of medical components of pinellia ternata.

The method of flying through the air is a qi-promoting and qi-circulating technique commonly used in clinical acupuncture. It includes four methods: the blue dragon wagging its tail, the white tiger shaking its head, the green turtle probing the cave and the red phoenix winging to the source and functions to circulate bodily meridian qi. The method of flying through the air was firstrecorded in Golden needle Fu. Later and modern doctors developed it on the basis of Golden needle Fu. This article straightens up the historical origin and development of four methods of flying through the air.

Objective To study the effects of different types of exercise training on learning and memory, as well as on the expression of synaptophysin (SYP) and on postsynaptic density protein 95 (PSD-95) in rats in which a model of vascular dementia had been created.Methods Forty male Wistar rats were divided randomly into a voluntary exercise group (V-EX) , a forced exercise group (F-EX) , an involuntary exercise group (I-EX) , a vascular dementia group (VD) and a sham-operation group (Sham) , with 8 rats in each group.Two-vessel occlusion (2-VO) of the arteria carotis communis was used to create a model of vascular dementia in all of the rats except those in the sham-operation group.Beginning one week after the surgery, the V-Ex rats were free to run in a running wheel.The F-EX rats were forced to run 270 m a day in an electric wheel.The I-EX rats were stimulated to imitate the gait pattern of their forelimbs running at 9 m/min three times a day for l0 minutes each time.No special training was given to the rats in the other 2 groups.Three weeks after the surgery, their learning and memory were tested using a novel object recognition test.Immediately after the test, their prefrontal cortex was sampled and the expression of SYP and PSD-95 was detected using western blotting.Results The average novel object recognition indices of the rats in the V-EX, F-EX and I-EX groups were all significantly higher than that of the VD group.Average PSD-95 expression was also significandy higher than in the VD group.Conclusion Exercise, whether voluntary, forced or induced by functional electrical stimulation can improve learning and memory in vascular dementia, at least in rats.The mechanism is possibly that the training can increase the expression of PSD-95 in the prefrontal cortex, though not SYP.

Objective To establish a high throughput screening assay for identifying human small molecular antagonists targeted IL-6R.Methods The full length gene of the human IL-6R extracellular region was amplified by PCR and cloned into a eukaryotic expression vector to construct recombination expression plasmid pABHis -IL6R that was then transfected transiently into HEK293T cells to prepare recombination protein IL-6R.Western blotting assay and receptor-ligand binding experiment were used to analyze the bioactivity of IL-6R.A new screening method based on ELISA was established using the function of IL-6R binding to its ligand and the characteristics of Fc fragment binding to IgG-HRP.Then Z′-factor was calculated and a known antagonist ab 47215 was used to assess the stability and reliability of the new assay .Results Recombination plasmid pABHis-IL6R was constructed and soluble IL-6R was prepared.IL-6R reported herein could be recognized by an anti-IL-6R antibody and specifically bind to its ligand in a dose response manner .A Z′-factor of 0.53 was obtained that could serve high throughput screening assay .Ab47215 , as a known specific antagonist , was able to block rhIL-6 from binding to the receptor in a dose-dependent manner in the new screening assay , the IC50 of which was (0.55 ± 0.11)μg/ml.Conclusion An innovative and easy screening assay for identifying human IL-6R antagonists is established , which might help discover potent and specific antagonists .

OBJECTIVEThis investigation aimed to examine how buccal mucosa microbiome succeeds in a healthy population with different ages and dentition stages.

METHODSTwenty-five subjects were recruited and subdivided into five groups: primary dentition group, mixed dentition group, adolescent group, adult group, and elderly group. Individual mucosal microbiota was obtained by gently scraping both sides of the buccal mucosa with a cotton swab. Microbial diversity was analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE).

RESULTS1) The composition of buccal mucosa microbiota has great intra-individual divergence. 2) The average band numbers of the primary dentition group, mixed dentition group, adolescent group, adult group, and elderly group were 21.2 +/- 4.0, 17.8 +/- 3.9, 15.8 +/- 4.3, 16.8 +/- 3.7, and 22.2 +/- 6.5, respectively. No between-group differences was observed (P > 0.05), indicating that predominant strains in the oral cavity may be stable throughout an individual's lifetime. 3) The Shannon indices of primary dentition group, mixed dentition group, adolescent group, adult group, and elderly group were 1.73 +/- 10.2, 1.43 +/- 0.1, 1.05 +/- 0.2, 1.45 +/- 0.2, and 1.63 +/- 0.3, respectively. A significant between-group difference was observed (P = 0.003), indicating that the microbial diversity of the buccal mucosa decreases from childhood through adolescence, but increases from adult through senescence. 4) The clustering analysis showed that most of the samples in the same group clustered together, indicating higher intra-group community structure similarity.

CONCLUSIONComposition of the buccal mucosa microbiota was different among age groups. Adolescence may be an essential turning point of microbial ecology succession throughout life.

Adolescent ; Adult ; Aged ; DNA, Bacterial ; Humans ; Microbiota ; Mouth Mucosa ; Polymerase Chain Reaction ; RNA, Ribosomal, 16S

Objective To characterize the changes in the dimensions during systolic and diastolic periods in the aorta with ECG-gated multi-detector CTA scans.Methods The CT angiograms of 115 patients (78 males,mean age 55.2 ± 9.4 years;37 females,mean age 60.1 ± 8.5 years) both in systolic and diastolic periods were obtained on a 64-slice ECG-gated multi-detector CT scanner.The diameters were measured at four anatomic levels of the aorta.(Level A:1 mm proximal to the innominate artery;Level B:1 mm distal to the left common carotid artery;Level C:1 mm distal to the left subclavian artery;Level D:10cm distal to the left subclavian artery).On each level,the maximal and the minimal diameters were measured both in systolic and diastolic periods.Results The paired sample t test results showed a significant difference between the systolic and diastolic diameters in all individual subjects on every level (P ＜0.001).The mean maximum diameter changes were 1.95％ (range-2.0％ to 7.0％),2.12％ (range-3.0％ to 6.0％),1.88％(range-1.0％ to 8.0％)and2.47％(range-3.0％ to 10.0％)at level A,B,C and D,respectively.The mean minimum diameter changes were 1.43％ (range-3.0％ to 5.0％),2.67％ (range-2.0％ to 11.0％),1.75％ (range-14.0％ to 9.0％)and 2.99％ (range -2.0％ to 11.0％) at level A,B,C and D,respectively.Conclusions The differences of the aortic diameters between systolic and diastolic periods are significant.The pulsatility of aorta in Chinese population may be different from published Western literature.

Purpose To detect the expression of Raptor,Rictor,angiogenesis-related factors HIF-lα,HIF-2α and VEGF and to investigate their relationship and significance in eolorectal cancer (CRC).Methods Immunohistochemistry,Western blot and RT-PCR were employed to detect the expression of Raptor,Rictor,HIF-lα,HIF-2α and VEGF in 120 cases of CRC and 60 cases of normal colorectal mucosa.CD34 labeled microvascular density (MVD) was also observed.The correlations between Raptor,Rictor,HIF-1α,HIF-2c,VEGF expression and the patients' clinicopathological features were analyzed.Results The positive rates of Raptor,Rictor,HIF-1c,HIF-2α and VEGF in CRC were significantly higher than those in normal colorectal mucosa (P ＜ 0.05).Raptor and Rictor expression was correlated with the degree of tumor diffcrentiation and lymph node metastasis,respectively.The expression of HIF-1α,HIF2α and VEGF was higher in patients with lymph node metastasis than those in patients without lymph node metastasis (P ＜0.05).The MVD was higher in patients with Raptor or Rictor positive than that in patients with Raptor or Rictor negative (P ＜0.05).The expression of Raptor was positively correlated with HIF-1α and VEGF (P ＜ 0.01),the expression of Rictor was positively correlated with HIF-2o and VEGF (P ＜ 0.01),but the expression of Raptor was negatively correlated with Rictor (P＜0.01).Conclusion The expression of mTOR core molecules Raptor and Rictor is related to the initiation and development of colorectal cancer and angiogenesis,and they promote angiogenesis in colorectal cancer by different ways.