Object To optimize the apheresis procedure of mononuclear cells from bone marrow for different clinical treatments. Methods Bone marrow mononuclear cells were separated from bone marrow using COBE Spectra apheresis system. Cell morphology, cell counts, positive expression of CD34, CD133 and CD271 were detected, and the obtaining percent of total nuclear cells and mononuclear cells were calculated. The relationships between cell-morphology and CD34, CD133 and CD271, were also analyzed. Results 1)The positive expression of CD271 was correlated with monocytes before and after apheresis (P

Objective To investigate the effect of aluminum on hair loss induc ed by fluoride in fluorosis mice.Methods Sixty male C57BL mice were divided into four groups according to body mass:control group,fluoride (F) group (F-100 mg/L),aluminum(Al) group(Al3+ 270 mg/L) and F + Al group(F-100 mg/L + Al3+270 mg/L).Mice were killed 1 month and 3 months after the experiment,respectively.Bone F content was detected by ion-selective electrode method.The level of bone Al was measured through inductively coupled plasma emission spectrum.Dental fluorosis and hair loss of mice were evaluated by visual method.Results One month after the experiment,no dental fluorosis and hair loss was found in all four groups.The content of bone F was the highest in F group [(2401.649 + 86.835) mg/kg],and the lowest in A1 group [(427.006 + 11.878) mg/kg].The levels of bone F in F + Al group and control group were (1210.332 + 19.531)mg/kg and (538.001 + 33.337)mg/kg,respectively.The difference was statistically significant between any two groups (all P ＜ 0.05).Three month after the experiment,all mice of F treatment group had dental fluorosis and hair loss(10/10).Alopecia areas were found in the neck and back regions only.There was no hair loss in control group,Al group and F + Al group.No dental fluorosis was found in both control and Al groups.Only 2 mice were found with dental fluorosis in F + Al group.The levels of bone F in F group,F + Al group,control group and Al group were (4098.645 + 58.842),(1888.165 ± 12.187),(876.258 + 14.462) and (662.385 ± 8.966) mg/kg,respectively.The difference was statistically significant between any two groups (all P ＜ 0.05).Conclusions The hair loss is found in fluorosis mice.Hair loss of mice is closely associated with the level of F exposure.Al can prevent the occurrence of hair loss induced by F in mice through reducing the accumulation of F.

Objective To evaluate the efficacy and safety of the unilateral and bilateral drainage in hilar malignant biliary obstruction with a meta?analysis of relevant studies. Methods A systematic electronic search with keywords “ biliary stent”, “hilar tumor” and “malignant biliary obstruction” was independently performed by two reviewers in major electronic databases of Pubmed, EMBASE, Cochrane Library and Web of Science. A meta?analysis was conducted using Revman 5?? 1 software. Results Six studies were included with a total number of 558 patients, of whom 307 patients underwent unilateral biliary drainage and 251 pa?tients bilateral drainage. There was no significant difference in early complications ( OR = 1?? 03,95% CI:0?? 58?1?? 81,P = 0?? 93), later complications (OR = 0?? 98,95%CI:0?? 46?2?? 07,P = 0?? 95), operation success rate (OR= 1?? 42,95%CI:0?? 76?2?? 66,P = 0?? 28),drainage efficacy or median survival time between the two groups. Compared with unilateral biliary drainage, bilateral biliary drainage had a longer time of stent patency (MD = - 29?? 12,95% CI:- 38?? 55?- 19?? 70,P< 0?? 001). Conclusion Both unilateral and bilateral biliary drainage are safe and effective for hilar malignant biliary obstruction, but more high quality clinical researches are needed.

Objective To investigate the effect of sulforaphane on 1-methyl-4-phenylpyridinium (MPP +)-induced cell viability loss in cultured PC12 cells and to explore the possible mechanism.Methods MPP + induced damage in PC12 cells was prepared as oxidative damage model.Sulforaphane (0.5,1.O,2.5,5.0 and 10.0 μmol/L) was added in each group cell growth medium.Subsequent experiments were divided into 4 groups:(A) normal control group,(B) sulforaphane group,(C) MPP+ injury group,(D)sulforaphane pretreatment + MPP+ injury group.Cell viability was detected by MTT assay,and the sulforaphane pretreatment PC12 cell viability was observed in different concentrations.Flow cytometry was used to detect changes in the rate of apoptosis in different packet PC12 cells,and protein expression levels of nuclear factor erythroid2-related factor 2 (Nrf2),heme oxygenase (HO-1) and human NAD (P) H dehydrogenase,quinone 1 (NQO1) were detected by Western blot when the PC12 cells were incubated with sulforaphane (2.5 μmol/L) and (or) MPP+ (500 μmol/L) for 24 h in vitro.Results Compared to control group (cell survival rate was 98.70％),the survival percents of PC12 cells were significantly decreased in MPP+-treated group (58.16％).A significant difference was showed between group A and C (F =21.83,P ＜ 0.05),and the cell survival rate in group D was significantly improved.Compared to control group,the rate of apoptosis in MPP+ injury group was increased,and the rate of apoptosis after pretreatment of the sulforaphane was significantly reduced.Compared to MPP+ injury group,the levels of Nrf2,HO-1 and NQO1 protein expression were significantly increased in sulforaphane pretreatment group.Conclusion Sulforaphane have a protective effect against MPP+-induced PC12 cell model damage,and the protective effect may be achieved by activating the Nrf2-antioxidant response element pathway.

Objective To analyse factors associated with onychomadesis in children,and to evaluate the relationship between onychomadesis and hand-foot-mouth disease (HMFD).Methods A retrospective study was performed.Clinical data were collected from 120 children with onychomadesis (average age,3.19 ± 2.06 years) and 120 sex-and age-matched patients with hemangioma.Viral detection was realized by real-time reverse transcriptionPCR in throat swab specimens.Data were analyzed by chi-square test using the SPSS 16.0 software.Results Of the 120 patients with onychomadesis,85 (70.83％) had a history of HMFD,which was 4 to 8 weeks prior to the occurrence of onychomadesis.Onychomadesis was strongly correlated with HMFD (OR,7.621,95％ CI,4.292-13.531),but uncorrelated with the occurrence and peak of fever,abnormality of serum trace elements,existence of latent diseases,or the use of antipyretic drugs or antimicrobial drugs during the clinical course of HMFD (all P ＞0.05).Several viruses were detected in 39.7％ of 68 throat swab specimens from patients with HMFD accompanied by onychomadesis,which included Coxsackievirus A16 in 9 patients,enterovirus 71 in 3 patients and unidentified enteroviruses in 15 patients.Conclusion Onychomadesis appears to be a complication of HMFD.

[ABSTRACT]OBJECTIVETo compare the differences of aerodynamic characteristics of pharyngeal cavity between normal subjects and OSAHS patients, and to study the nasal obstruction in the pathogenesis of the OSAHS.METHODSA total of 60 normal subjects and 60 OSAHS patients were enrolled in this study. Numerical simulation was performed to calculate the airflow dynamic indexes of three sections of pharyngeal cavity. Correlation analysis of the nasal resistance and negative pressure were studied.RESULTSThe average pharyngeal negative pressure and airflow velocity in OSAHS patients were significantly increased than that in normal subjects. The total nasal airway resistance significantly correlated with the average negative pressure of pharyngeal cavity. CONCLUSIONAirflow dynamic indexes of OSAHS patients had significant different pharyngeal aerodynamic characteristics from normal subjects. The increased average negative pressure in pharynx might contribute to the severity of pharyngeal collapse for OSAHS patients. Higher total nasal resistance might play a role in the pathophysiological mechanisms of OSAHS.

Objective: To investigate the relationship between two HTR2C gene polymorphisms, that is C 759T and G 697C polymorphisms, and attention deficit hyperactivity disorder (ADHD) comorbid or not comorbid learning disorder (LD). Methods: Blood samples were taken from 189 trios with probands of ADHD comrbid LD (ADHD+LD) and 299 trios with probands of ADHD not comorbid LD (ADHD-LD). DNA was extracted and PCR was performed to amplify the fragments containing both C 759T and G 697C polymorphisms. Aci Ⅰ was used to detect different alleles of the two polymorphisms. Allele based and haplotype based TDT analysis were used to test the association of the two polymorphisms of HTR2C gene and ADHD-LD and ADHD+LD. Results: 759C(? 2= 6.961 , P =0.008), 697G(? 2=8.346, P =0.004), as well as 759C/ 697G haplotype were over transmitted(? 2=9.000, P = 0.002 7), while haplotype 759T/ 697C was under transmitted(? 2= 7.784 , P =0.005 3) to probands with ADHD-LD. No biased transmission of any allele and haplotype were found in families with probands of ADHD+LD. Conclusion: ADHD-LD and ADHD+LD are different at the level of HTR2C gene polymrohisms of C 759T and G 697C. HTR2C is related to ADHD-LD, while not related to ADHD+LD.

Objective To investigate the expression of matrix metalloproteinases 1 (TIMP-1)products inhibitor on smooth muscle cell (SMC) proliferation in rat autologous vein graft.Methods Autogenous vein transplantation model was established in 30 Wistar rats. The vein grafts were harvested at different time after grafting. The change of TIMP-1 was detected by using hematoxylin and eosin, immunohistochemistry and in situ hybridization (ISH). Results 1. Changes of histopathology in vein grafts: Intimal hyperplasia (IH) could be seen in 7 - 14 days, the peak at 2 ~ 4 weeks after operation.2. ISH results: TIMP-1mRNA positive cells appeared at 24 hours, increased significantly in 72 hours and reached the peak at 1 ~ 2 week after operation. There was significant difference between day 1 and 2 week.TIMP-I expression was not detected in normal vessels (P <0. 01). 3. Immunohistochemistry results: There was trace TIMP-I expression in normal vessels. The expression of TIMP-1 appeared at 72 hours after vein graft, increased mostly in 1 week, reached the peek at 2 week and reduced later. There was significant difference between day 1 and 2 week (P < 0. 01). Conclusions 1. The activation of TIMP-1 exists in autogenous vein grafts. 2. The intima experienced hyperplasia in spite of increased secretion of endogenous TIMP-1 after autogenous vein grafts.