BACKGROUND: Differentiation of neural stem calls (NSCs) was mediated by many environmental factors. Several factors can induce NSCs to differentiate into neurons in varying degrees and it is now a focus on the control of NSCs differentiation.OBJECTIVE: To study the effects of combination of basic fibroblast growth factor (bFGF) and brain-derived neurotrophic growth factor (BDNF) on the differentiation of NSCs into neurons.DESIGN, TIME AND SETTING: The in vitro cytology observation was performed at the Neurotomia Laboratory of China Medical University in May 2008.MATERIALS: Three adult male SD rats were provided by Experimental Animal Center of China Medical University.METHODS: Dispositions to the rats were consistent with ethical standards of animals. The rat brain hippocampus was removed sterilely. After trypsin digestion, NSCs were cultured in serum-free medium. Cell suspension was prepared and diluted when the diameter of the fourth passage of clone sphere was 200 μm by mixture of DMEM/F12 containing 2% B27, 20 μg/L of epidermal growth factor (EGF), and 20 μg/L bFGF. Monoclonal calls were passagad. NSCs were divided into blank control, bFGF, BDNF and bFGF+BDNF groups by different growth factors added into the media. Fetal bovine serum of 0.1 volume fraction was added in blank control group. The media in the other three groups were added bFGF, BDNF and bFGF+BDNF respectively for 1 week.The concentration of bFGF was 10 μg/L and the concentration of BDNF was 200 μg/L.MAIN OUTCOME MEASURES: Immunocytochemistry staining was used to identify NSCs as well as to detect the differentiation of NSCs into neurons.RESULTS: The monoclonal calls expressed nestin and the differentiated call expressed neuron specific enolase and glial fibrillary acidic protein. Compared to blank control group, the proportion NSCs into neurons in the bFGF group, BDNF group and bFGF+BDNF group were much higher (t=3.409-7.558, P < 0.05), with the highest in bFGF+BDNF group (t =7.558, P < 0.05).CONCLUSION: Combination of bFGF and BDNF can promote the differentiation of adult hippocampus NSCs into neurons.

Abstract?AlM: To evaluate the efficacy of intravitreal injection with Ranibizumab combined with sub-Tenon injection with Triamcinolone acetonide ( TA ) for macular edema ( ME) due to central retinal venous occlusions ( CRVO) .?METHODS:Forty-six patients (46 eyes) were diagnosed ischemic CRVO with significant macular edema by fundus fluorescence-angiography ( FFA ) and optical coherence tomography ( OCT ) . All the patients had panretinal photocoagulation ( PRP ) , a week after the four times therapies. Twenty-three patients ( 23 eyes ) in group A were randomly chosen to receive intravitreal injection with ranibizumab ( lVR ) , another 23 patients ( 23 eyes ) in group B to treat with both lVR and sub-Tenon injection with TA ( PSTT ) . There was no significant difference on macular edema and best corrected visual activity ( BCVA) between the two groups. The changes in BCVA and central macular thickness ( CMT) before and 1wk; 1, 3, 6mo after treatments were analyzed.?RESULTS: One week after the treatment: the BCVA increased while the CMT decreased compared with that of pretreatment in groups A and B (P<0. 05). BCVA and CMT changes between two groups were statistically significant differences (P<0. 05). One month and three months after the treatment:the BCVA increased while the CMT decreased compared with that of pretreatment in group A and B (P<0. 05), the difference was significant between two groups ( P< 0. 05 ). Six month after the treatment:the BCVA increased while the CMT decreased compared with that of pretreatment in groups A and B. Compare BCVA difference between the groups was statistically significant change (P<0. 05), CMT difference was not statistically significant (P>0. 05).?CONCLUSlON:Not only lVR can decrease ME caused by CRVO and increase the BCVA, but also lVR combined with PSTT can. But combined therapies can be more rapidly and have more positive effect on decreasing the ME and protecting the visual function.

Objective To compare the safety,effectiveness and predictability of laser in situ keratomileusis (LASIK) with fem- tosecond laser (IntraLase) and mechanical microkeratome (Moria M2,head 90?m).Design Prospective clinical study.Participant 148 patients (274 eyes) with high myopia received operation of LASIK.Method The patients were assigned to receiving LASIK with corneal flap creation by Intralase femtosecond laser (134 eyes of 76 patients) or Moria 90 keratome (140 eyes of 72 patients),both groups receiving eximer laser ablation with VISX Star S4.Followed-up examinations such as visual acuity,refraction,wavefront aberra- tion,etc.were scheduled for 1 day,1 week,1 month and 3 months postoperatively.Main Outcome Measures Visual acuity,refrac- tion,wavefront aberration,Schirmer test and tear film breakup time(BUT).Results At 3 months after operation,108 eyes (80.6%) of IntraLase group had UCVA better than or equal to BSCVA preoperatively,showing no statistically significant difference to microker- atome group (116 eyes,82.9%,P=0.642).The mean residual spheroequivalent of refraction of IntraLase group was -0.49?0.70D,show- ing no statistically significant difference to microkeratome group (-0.56?0.83D,P=0.448).The mean Schirmer test of Intralase group was 9.5?4.0mm,showing no statistically significant difference to microkeratome group (9.5?7.2mm,P=0.950).The mean BUT of IntraLase group was 7.9?4.3s,showing no statistically significant difference to microkeratome group (8.08?5.48s,P=0.869).The postoperative higher-order aberrations of the IntraLase group was 0.480?0.133?m,lower than that of microkeratome group (0.578?0.169?m,P=0.034). Conclusions Thin-flap LASIK with femtosecond laser and mechanical keratome flap creation are both safe,effective for the correction of high myopia,showing good predictability and stability.Femtosecond laser has slightly better clinical outcomes than microkeratome.

Objective To investigate the influencing factors for eye cyclotorsion and pupil centroid shift during LASIK.Design Non-controlled retrospective case series.Participant 131 patients (262 eyes) with myopia received bilateral LASIK.Methods Eye cy- clotorsion and pupil centroid shift were measured with Custom Vue~(TM) software during operation and compared with age,gender,right or left eye,flap-making method,spherical equivalent (SE),pupil diameter before and during operation.Main Outcome Measures The de- gree of eye cyclotorsion and distance of pupil centroid shift during LASIK.Results The mean eye cyclotorsion during LASIK was 3.07??2.07?(0?-8.6?).The mean pupil centroid shift was 0.33?0.14 mm (0.04-0.51 mm).The eye cyclotorsion was relevant to preoperative pupil size,difference of pupil size before and during operation,and preoperative SE (r=0.188,0.156,0.130,all P7.0 mm was higher than that of with pupil diameter≤7.0mm (3.35??2.17?,2.71??1.89?,P=-0.014).Pupil centroid shift was higher in fight eyes than that in left eyes (0.39?0.12 mm,0.28?0.13 mm,P=0.000).Conclu- sion Eye cyclotorsion and pupil centroid shift during LASIK can be measured with Custom Vue~(TM) system.The eye cyclotorsion may be influenced by the preoperative pupil size.The pupil centroid during LASIK was more significant in the right eyes than in the left eyes.

Acute undifferentiated leukemia (AUL) is a clinically rare subtype of acute leukemia (AL). AUL lacks the serial specific antigen expressions, and the blasts have no morphological features of myeloid differentiation. Due to the rarity of AUL in clinic, there is no unified understanding of clinical and biological characteristics. It′s difficult to diagnose and choose the optimal treatment for AUL patients. And the prognosis of patients with AUL is poorer compared with other types of AL. Thanks to the big development of biotechnology in recent years, the related researchers have a better understanding of this rare disease. This article reviews the progress of diagnosis and treatment in AUL.

Purpose:To study the expression of CD44v6 protein in breast carcinoma and its prognostic significance. Methods:100 cases of formalin-fixed paraffin-embeded female breast invasive ductal carcinoma tissues were retrospectively analyzed using EnVision~(TM) immunohistochemical method with the monoclonal antibody CD44v6.Statistical analysis was based on the Log-rank test and Cox analysis.Results:Sixty-six of 100 cancer tissues expressed CD44v6.Positive staining was mainly on the cell membranes.There was significant correlation between CD44v6 immunoreactivity and lymph node me- tastasis and TNM stage.The 5-and 10-year survival rates were 82.76% and 78.37% of patients with CD44v6 low-expres- sion tumors,and 64.1% and 49.88% of those with CD44v6 high-expression tumors,respectively;the difference between the two groups of patients was significant(P

Acupuncture Therapy ; Adult ; Aged ; Combined Modality Therapy ; Female ; Humans ; Male ; Middle Aged ; Needles ; Periarthritis ; therapy ; Punctures ; Treatment Outcome

Humans ; Stomatitis, Aphthous ; diagnosis ; etiology ; therapy

Objective: To explore the influencing factors and pathways of clinicians' tumor marker prescription behavior in lung diseases, so as to find out the methods and measures to promote clinicians to optimize the tumor marker prescription. Methods: From July 24, 2017 to August 10, 2017, clinicians with willingness and the right of prescription mainly from hospitals in Shanghai and Beijing were invited to participate in survey on influencing factors of tumor marker prescription behavior in lung diseases. Based on the classical theoretical framework of IMB model, an IMB theoretical model of clinicians' tumor marker detection behavior was proposed. Statistical description and correlation analysis were performed by SPSS 24.0, and the IMB theoretical model was validated and corrected by AMOS 24.0. Results: The personal intention (r=0.251, P=0.000) and personal interest protection (r=0.178, P=0.007) had a significant positive correlation with information. Meanwhile, the personal intention (P=0.000) and personal interest protection (P=0.013) had a significant positive effect on behavioral skills, and the behavioral skills had a significant positive effect on tumor marker prescription behavior (P=0.000). There was no direct effect of information on behavioral skills, and motivation had no direct effect on tumor marker prescription behavior. Behavioral skills played a mediating role in the process of motivation influencing the tumor marker prescription behavior. Conclusion: The large percentage of irrational tumor marker prescription in lung diseases suggests the universality of inappropriate testing, which needs the joint efforts of governments, hospitals, clinicians and patients on improvement.

Objective To compare the effects of biphasic square waveform (BSW) with low or high energy on external defibrillation.Method Adult swine model of closed chest ventricular fibrillation induced by electricity was established.Eighteen swine,weighing (30?3.3) kg were randomly divided into three groups:50-50-50 J group (n=6),30-50-75 J group (n=6),120-150-200 J (n=6).After three minutes of ventricular fibrillation without treatment,the pigs in the three groups were defibrillated accordance to the above sequences. Results 30 J BSW didn't succed to external defibrillate.The first defibrillation successful rate of 50 J and 120 J BSW was 5/6.The total defibrillation successful rate of every group was 100%.All pigs quickly had spontaneous circulation after defibrillation and survived more than 24 hours.ST-T change of low-energy was less than that of high-energy.After resuscitation,myocardial function decreased,but there had not significant differences between groups.Conclusions In the study,30J BSW could not reach successful defibrillation,and 50 J and 120 J BSW had similar defibrillation efficacy.The ideal energy of BSW external defibrillation was 50 J.